/* roulang page: index */
:root {
            --bg: #111111;
            --bg-soft: #171719;
            --panel: #1d1d20;
            --panel-light: #242426;
            --gold: #c5a059;
            --gold-bright: #f3c969;
            --champagne: #ead39a;
            --text: #f5f5f7;
            --muted: #aaa7a2;
            --muted-light: #d0cbc2;
            --line: rgba(197, 160, 89, .24);
            --line-soft: rgba(255, 255, 255, .09);
            --danger: #e97867;
            --success: #7ec79a;
            --radius-lg: 28px;
            --radius-md: 18px;
            --radius-sm: 11px;
            --shadow: 0 22px 70px rgba(0, 0, 0, .34);
            --shadow-soft: 0 12px 34px rgba(0, 0, 0, .22);
            --container: 1180px;
        }

        *, *::before, *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            color: var(--text);
            background:
                radial-gradient(circle at 7% 4%, rgba(197, 160, 89, .09), transparent 25rem),
                radial-gradient(circle at 94% 45%, rgba(197, 160, 89, .05), transparent 28rem),
                var(--bg);
            font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.65;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            opacity: .18;
            background-image: linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
            background-size: 42px 42px;
            mask-image: linear-gradient(to bottom, black, transparent 82%);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease, background-color .25s ease, border-color .25s ease, transform .25s ease, box-shadow .25s ease;
        }

        img {
            display: block;
            max-width: 100%;
            height: auto;
        }

        button, input {
            font: inherit;
        }

        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 3px solid rgba(243, 201, 105, .65);
            outline-offset: 3px;
        }

        .container {
            width: min(100% - 40px, var(--container));
            margin-inline: auto;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 40;
            background: rgba(17, 17, 17, .9);
            border-bottom: 1px solid rgba(197, 160, 89, .16);
            backdrop-filter: blur(18px);
        }

        .nav-shell {
            min-height: 78px;
            display: flex;
            align-items: center;
            gap: 26px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            flex: 0 0 auto;
            font-family: Georgia, "Times New Roman", serif;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: .01em;
            color: var(--champagne);
            white-space: nowrap;
        }

        .brand-mark {
            width: 35px;
            height: 35px;
            display: grid;
            place-items: center;
            border: 1px solid var(--gold);
            border-radius: 50%;
            color: var(--gold-bright);
            font-size: 14px;
            box-shadow: inset 0 0 0 4px rgba(197, 160, 89, .08);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 5px;
            margin-left: auto;
        }

        .main-nav a {
            position: relative;
            padding: 10px 13px;
            color: var(--muted);
            font-size: 14px;
            white-space: nowrap;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 13px;
            right: 13px;
            bottom: 3px;
            height: 1px;
            background: var(--gold-bright);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .25s ease;
        }

        .main-nav a:hover, .main-nav a.active {
            color: var(--text);
        }

        .main-nav a:hover::after, .main-nav a.active::after {
            transform: scaleX(1);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 0 0 auto;
        }

        .login-link {
            color: var(--muted-light);
            font-size: 14px;
            padding: 10px 9px;
            white-space: nowrap;
        }

        .login-link:hover {
            color: var(--gold-bright);
        }

        .button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 46px;
            padding: 0 19px;
            border: 1px solid transparent;
            border-radius: 999px;
            font-weight: 700;
            font-size: 14px;
            line-height: 1;
            cursor: pointer;
            transition: transform .25s ease, box-shadow .25s ease, background-color .25s ease, color .25s ease;
        }

        .button:hover {
            transform: translateY(-2px);
        }

        .button:active {
            transform: translateY(1px);
        }

        .button--gold {
            color: #18130b;
            background: linear-gradient(135deg, var(--gold-bright), var(--gold));
            box-shadow: 0 10px 28px rgba(197, 160, 89, .2);
        }

        .button--gold:hover {
            color: #18130b;
            box-shadow: 0 14px 35px rgba(197, 160, 89, .34);
        }

        .button--outline {
            color: var(--champagne);
            border-color: rgba(197, 160, 89, .58);
            background: rgba(197, 160, 89, .06);
        }

        .button--outline:hover {
            color: var(--text);
            border-color: var(--gold-bright);
            background: rgba(197, 160, 89, .13);
        }

        .button--quiet {
            color: var(--muted-light);
            border-color: var(--line-soft);
            background: rgba(255,255,255,.035);
        }

        .button--quiet:hover {
            color: var(--text);
            border-color: var(--line);
        }

        .hero {
            position: relative;
            min-height: 555px;
            display: flex;
            align-items: center;
            padding: 82px 0 76px;
            background-image: linear-gradient(90deg, rgba(10, 10, 10, .96) 0%, rgba(17, 17, 17, .83) 46%, rgba(17, 17, 17, .63) 100%), url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid rgba(197, 160, 89, .18);
        }

        .hero::after {
            content: "";
            position: absolute;
            inset: auto 0 0;
            height: 150px;
            background: linear-gradient(transparent, var(--bg));
            pointer-events: none;
        }

        .hero__content {
            position: relative;
            z-index: 1;
            width: min(920px, 100%);
            margin: 0 auto;
            text-align: center;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            margin-bottom: 19px;
            color: var(--gold-bright);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .14em;
            text-transform: uppercase;
        }

        .eyebrow::before, .eyebrow::after {
            content: "";
            width: 28px;
            height: 1px;
            background: var(--gold);
        }

        h1, h2, h3, p {
            margin-top: 0;
        }

        h1, h2, h3 {
            font-family: Georgia, "Times New Roman", serif;
            font-weight: 700;
            line-height: 1.16;
        }

        h1 {
            max-width: 900px;
            margin: 0 auto 22px;
            font-size: clamp(38px, 5.6vw, 72px);
            letter-spacing: -.035em;
            color: #fffdf7;
        }

        .hero__intro {
            max-width: 775px;
            margin: 0 auto 30px;
            color: #d6d1c7;
            font-size: clamp(17px, 2vw, 20px);
            line-height: 1.7;
        }

        .search-box {
            max-width: 700px;
            margin: 0 auto 28px;
            padding: 7px;
            display: flex;
            gap: 7px;
            border: 1px solid rgba(234, 211, 154, .5);
            border-radius: 999px;
            background: rgba(14, 14, 15, .75);
            box-shadow: 0 14px 38px rgba(0,0,0,.32), inset 0 0 20px rgba(197,160,89,.04);
        }

        .search-box input {
            min-width: 0;
            flex: 1;
            height: 48px;
            padding: 0 19px;
            border: 0;
            outline: 0;
            color: var(--text);
            background: transparent;
        }

        .search-box input::placeholder {
            color: #96928a;
        }

        .search-box .button {
            min-width: 135px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 31px;
        }

        .hero-badges {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
        }

        .data-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            min-height: 33px;
            padding: 6px 12px;
            border: 1px solid rgba(197,160,89,.26);
            border-radius: 999px;
            color: var(--muted-light);
            background: rgba(255,255,255,.045);
            font-size: 13px;
        }

        .data-badge strong {
            color: var(--gold-bright);
            font-size: 15px;
        }

        .quick-links {
            position: relative;
            z-index: 2;
            margin-top: -25px;
        }

        .quick-links__bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 18px 22px;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            background: rgba(29, 29, 32, .92);
            box-shadow: var(--shadow-soft);
        }

        .quick-links__label {
            color: var(--muted-light);
            font-size: 13px;
            font-weight: 700;
            white-space: nowrap;
        }

        .quick-links__items {
            display: flex;
            justify-content: flex-end;
            flex-wrap: wrap;
            gap: 9px;
        }

        .quick-link {
            padding: 8px 13px;
            border: 1px solid var(--line-soft);
            border-radius: 999px;
            color: var(--muted-light);
            background: rgba(255,255,255,.025);
            font-size: 13px;
        }

        .quick-link:hover {
            color: var(--gold-bright);
            border-color: var(--gold);
            background: rgba(197,160,89,.08);
        }

        main {
            position: relative;
        }

        .section {
            padding: 96px 0;
        }

        .section--compact {
            padding: 76px 0;
        }

        .section-heading {
            max-width: 720px;
            margin-bottom: 38px;
        }

        .section-heading--wide {
            max-width: 850px;
        }

        .section-kicker {
            display: block;
            margin-bottom: 11px;
            color: var(--gold-bright);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .13em;
            text-transform: uppercase;
        }

        h2 {
            margin-bottom: 14px;
            color: #fffdf8;
            font-size: clamp(30px, 4vw, 48px);
            letter-spacing: -.025em;
        }

        h3 {
            margin-bottom: 9px;
            color: var(--champagne);
            font-size: 23px;
        }

        .section-heading p, .body-copy {
            margin-bottom: 0;
            color: var(--muted);
            font-size: 16px;
        }

        .split-layout {
            display: grid;
            grid-template-columns: minmax(0, 1.08fr) minmax(330px, .92fr);
            gap: 62px;
            align-items: center;
        }

        .rich-copy p {
            margin-bottom: 18px;
            color: var(--muted-light);
        }

        .rich-copy p:last-child {
            margin-bottom: 0;
        }

        .highlight-line {
            margin: 27px 0 0;
            padding: 16px 18px;
            border-left: 2px solid var(--gold);
            color: var(--champagne);
            background: linear-gradient(90deg, rgba(197,160,89,.1), transparent);
        }

        .formula-panel {
            position: relative;
            padding: 31px;
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            background:
                linear-gradient(145deg, rgba(197,160,89,.1), transparent 48%),
                var(--panel);
            box-shadow: var(--shadow);
        }

        .formula-panel::before {
            content: "1.75";
            position: absolute;
            top: -25px;
            right: -5px;
            color: rgba(243, 201, 105, .08);
            font-family: Georgia, serif;
            font-size: 140px;
            font-weight: 700;
            line-height: 1;
        }

        .formula-panel__title {
            position: relative;
            margin-bottom: 24px;
            color: var(--gold-bright);
            font-size: 13px;
            font-weight: 800;
            letter-spacing: .12em;
            text-transform: uppercase;
        }

        .formula {
            position: relative;
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
        }

        .formula__number {
            padding: 17px 12px;
            border: 1px solid rgba(197,160,89,.35);
            border-radius: var(--radius-sm);
            color: var(--text);
            background: rgba(255,255,255,.045);
            text-align: center;
        }

        .formula__number strong {
            display: block;
            color: var(--gold-bright);
            font-family: Georgia, serif;
            font-size: 30px;
            line-height: 1;
        }

        .formula__number span {
            display: block;
            margin-top: 6px;
            color: var(--muted);
            font-size: 12px;
        }

        .formula__plus {
            color: var(--gold);
            font-size: 24px;
        }

        .formula-panel__note {
            position: relative;
            margin: 0;
            color: var(--muted-light);
            font-size: 14px;
        }

        .scenario-section {
            background: linear-gradient(180deg, rgba(29,29,32,.35), transparent);
            border-top: 1px solid rgba(255,255,255,.04);
            border-bottom: 1px solid rgba(255,255,255,.04);
        }

        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 19px;
        }

        .scenario-card {
            position: relative;
            min-height: 355px;
            overflow: hidden;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-lg);
            background: var(--panel);
            transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
        }

        .scenario-card:hover {
            transform: translateY(-6px);
            border-color: rgba(197,160,89,.65);
            box-shadow: 0 18px 45px rgba(0,0,0,.3);
        }

        .scenario-card__image {
            width: 100%;
            height: 150px;
            object-fit: cover;
            opacity: .72;
            filter: saturate(.7);
        }

        .scenario-card__body {
            padding: 24px 23px 25px;
        }

        .scenario-card__tag {
            display: inline-block;
            margin-bottom: 13px;
            padding: 5px 9px;
            border-radius: 6px;
            color: #19140c;
            background: var(--gold-bright);
            font-size: 11px;
            font-weight: 800;
            letter-spacing: .07em;
            text-transform: uppercase;
        }

        .scenario-card p {
            margin-bottom: 14px;
            color: var(--muted);
            font-size: 14px;
        }

        .score-list {
            display: flex;
            flex-wrap: wrap;
            gap: 7px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .score-list li {
            padding: 5px 9px;
            border: 1px solid var(--line-soft);
            border-radius: 7px;
            color: var(--muted-light);
            background: rgba(255,255,255,.035);
            font-size: 12px;
        }

        .calculation-section {
            padding-top: 105px;
        }

        .calculation-layout {
            display: grid;
            grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
            gap: 54px;
            align-items: start;
        }

        .calculation-visual {
            min-height: 490px;
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-lg);
            border: 1px solid var(--line);
            background: #25211c;
        }

        .calculation-visual img {
            width: 100%;
            height: 100%;
            min-height: 490px;
            object-fit: cover;
            opacity: .53;
            mix-blend-mode: screen;
        }

        .calculation-visual__caption {
            position: absolute;
            right: 22px;
            bottom: 22px;
            left: 22px;
            padding: 17px 18px;
            border-left: 2px solid var(--gold-bright);
            background: rgba(13,13,13,.77);
            backdrop-filter: blur(8px);
        }

        .calculation-visual__caption strong {
            display: block;
            margin-bottom: 4px;
            color: var(--champagne);
            font-family: Georgia, serif;
            font-size: 22px;
        }

        .calculation-visual__caption span {
            color: var(--muted-light);
            font-size: 13px;
        }

        .calc-content h2 {
            margin-bottom: 16px;
        }

        .calc-content > p {
            color: var(--muted-light);
        }

        .formula-list {
            margin: 27px 0 0;
            padding: 0;
            list-style: none;
        }

        .formula-list li {
            display: grid;
            grid-template-columns: 40px 1fr;
            gap: 15px;
            padding: 18px 0;
            border-top: 1px solid var(--line-soft);
        }

        .formula-list li:last-child {
            border-bottom: 1px solid var(--line-soft);
        }

        .formula-list__icon {
            width: 34px;
            height: 34px;
            display: grid;
            place-items: center;
            border: 1px solid var(--line);
            border-radius: 50%;
            color: var(--gold-bright);
            font-size: 13px;
            font-weight: 800;
        }

        .formula-list strong {
            display: block;
            margin-bottom: 4px;
            color: var(--text);
            font-size: 15px;
        }

        .formula-list p {
            margin-bottom: 0;
            color: var(--muted);
            font-size: 14px;
        }

        .example-strip {
            margin-top: 25px;
            padding: 19px 20px;
            border: 1px solid rgba(126,199,154,.28);
            border-radius: var(--radius-sm);
            background: rgba(126,199,154,.07);
        }

        .example-strip__label {
            display: block;
            margin-bottom: 5px;
            color: var(--success);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .08em;
            text-transform: uppercase;
        }

        .example-strip p {
            margin: 0;
            color: var(--muted-light);
            font-size: 14px;
        }

        .quick-result {
            padding: 85px 0;
            background: var(--panel);
            border-block: 1px solid rgba(197,160,89,.12);
        }

        .result-heading {
            display: flex;
            justify-content: space-between;
            align-items: end;
            gap: 25px;
            margin-bottom: 30px;
        }

        .result-heading .section-heading {
            margin-bottom: 0;
        }

        .result-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 12px;
        }

        .result-item {
            padding: 22px 18px;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-md);
            background: rgba(255,255,255,.025);
        }

        .result-item__mark {
            display: inline-block;
            margin-bottom: 17px;
            padding: 4px 8px;
            border-radius: 5px;
            font-size: 11px;
            font-weight: 800;
            letter-spacing: .06em;
            text-transform: uppercase;
        }

        .result-item--win .result-item__mark {
            color: #132118;
            background: #91d1a9;
        }

        .result-item--half .result-item__mark {
            color: #2b2110;
            background: var(--gold-bright);
        }

        .result-item--lose .result-item__mark {
            color: #321612;
            background: #df8b7c;
        }

        .result-item strong {
            display: block;
            margin-bottom: 7px;
            color: var(--text);
            font-family: Georgia, serif;
            font-size: 20px;
        }

        .result-item p {
            margin: 0;
            color: var(--muted);
            font-size: 13px;
        }

        .topics-section {
            padding-bottom: 72px;
        }

        .topics-layout {
            display: grid;
            grid-template-columns: .78fr 1.22fr;
            gap: 45px;
            align-items: center;
        }

        .topics-image {
            position: relative;
            min-height: 380px;
            overflow: hidden;
            border-radius: var(--radius-lg);
            border: 1px solid var(--line);
        }

        .topics-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            opacity: .65;
        }

        .topics-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(197,160,89,.15), transparent 55%);
        }

        .topic-links {
            display: grid;
            gap: 13px;
        }

        .topic-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 22px 23px;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-md);
            background: var(--panel);
        }

        .topic-link:hover {
            transform: translateX(5px);
            border-color: var(--gold);
            background: var(--panel-light);
        }

        .topic-link__meta {
            display: block;
            margin-bottom: 5px;
            color: var(--gold-bright);
            font-size: 11px;
            font-weight: 800;
            letter-spacing: .1em;
            text-transform: uppercase;
        }

        .topic-link strong {
            display: block;
            color: var(--text);
            font-family: Georgia, serif;
            font-size: 20px;
            line-height: 1.3;
        }

        .topic-link p {
            margin: 7px 0 0;
            color: var(--muted);
            font-size: 13px;
        }

        .topic-link__arrow {
            color: var(--gold-bright);
            font-size: 25px;
            transition: transform .25s ease;
        }

        .topic-link:hover .topic-link__arrow {
            transform: translateX(4px);
        }

        .latest-section {
            padding-top: 75px;
            background: linear-gradient(180deg, var(--bg), rgba(29,29,32,.52));
        }

        .latest-layout {
            display: grid;
            grid-template-columns: 1.32fr .68fr;
            gap: 38px;
            align-items: start;
        }

        .latest-list {
            margin: 0;
            padding: 0;
            list-style: none;
            border-top: 1px solid var(--line-soft);
        }

        .latest-list li {
            border-bottom: 1px solid var(--line-soft);
        }

        .latest-list a {
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 20px;
            padding: 21px 0;
        }

        .latest-list a:hover .latest-title {
            color: var(--gold-bright);
        }

        .latest-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px 13px;
            margin-bottom: 6px;
            color: var(--muted);
            font-size: 12px;
        }

        .latest-meta span:first-child {
            color: var(--gold);
        }

        .latest-title {
            display: block;
            color: var(--text);
            font-family: Georgia, serif;
            font-size: 20px;
            line-height: 1.35;
        }

        .latest-summary {
            display: block;
            max-width: 670px;
            margin-top: 7px;
            color: var(--muted);
            font-size: 13px;
        }

        .latest-arrow {
            align-self: center;
            color: var(--gold);
            font-size: 20px;
        }

        .recommendation-panel {
            padding: 27px;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            background:
                linear-gradient(160deg, rgba(197,160,89,.12), transparent 54%),
                var(--panel);
        }

        .recommendation-panel h3 {
            font-size: 25px;
        }

        .recommendation-panel p {
            margin-bottom: 21px;
            color: var(--muted);
            font-size: 14px;
        }

        .recommendation-points {
            margin: 0 0 23px;
            padding: 0;
            list-style: none;
        }

        .recommendation-points li {
            position: relative;
            padding: 10px 0 10px 25px;
            border-bottom: 1px solid var(--line-soft);
            color: var(--muted-light);
            font-size: 14px;
        }

        .recommendation-points li::before {
            content: "✦";
            position: absolute;
            left: 0;
            color: var(--gold-bright);
        }

        .trust-section {
            padding: 85px 0;
        }

        .trust-layout {
            display: grid;
            grid-template-columns: .76fr 1.24fr;
            gap: 58px;
            align-items: start;
        }

        .trust-intro {
            padding-right: 24px;
        }

        .trust-intro .button {
            margin-top: 22px;
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
        }

        .trust-item {
            padding: 24px 20px;
            border-top: 2px solid var(--gold);
            background: rgba(255,255,255,.025);
        }

        .trust-item__icon {
            margin-bottom: 20px;
            color: var(--gold-bright);
            font-size: 27px;
        }

        .trust-item h3 {
            margin-bottom: 8px;
            font-size: 19px;
        }

        .trust-item p {
            margin: 0;
            color: var(--muted);
            font-size: 13px;
        }

        .faq-section {
            padding-top: 80px;
            background: var(--panel);
            border-top: 1px solid rgba(197,160,89,.12);
        }

        .faq-layout {
            display: grid;
            grid-template-columns: .7fr 1.3fr;
            gap: 65px;
            align-items: start;
        }

        .faq-list {
            margin: 0;
        }

        .faq-list details {
            padding: 0;
            border-bottom: 1px solid var(--line-soft);
        }

        .faq-list details:first-child {
            border-top: 1px solid var(--line-soft);
        }

        .faq-list summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 21px 0;
            color: var(--text);
            font-family: Georgia, serif;
            font-size: 19px;
            font-weight: 700;
            cursor: pointer;
            list-style: none;
        }

        .faq-list summary::-webkit-details-marker {
            display: none;
        }

        .faq-list summary::after {
            content: "+";
            flex: 0 0 auto;
            color: var(--gold-bright);
            font-family: Inter, sans-serif;
            font-size: 25px;
            font-weight: 300;
        }

        .faq-list details[open] summary::after {
            content: "−";
        }

        .faq-list details p {
            max-width: 720px;
            margin: -7px 0 21px;
            color: var(--muted-light);
            font-size: 15px;
        }

        .cta-section {
            padding: 105px 0;
            text-align: center;
            background:
                linear-gradient(90deg, rgba(17,17,17,.88), rgba(33,27,18,.78), rgba(17,17,17,.88)),
                url('/assets/images/backpic/back-2.jpg') center/cover;
            border-top: 1px solid var(--line);
        }

        .cta-section h2 {
            max-width: 760px;
            margin-inline: auto;
        }

        .cta-section p {
            max-width: 650px;
            margin: 0 auto 28px;
            color: var(--muted-light);
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .site-footer {
            padding: 51px 0 25px;
            background: #0c0c0d;
            border-top: 1px solid rgba(197,160,89,.18);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.25fr .75fr .75fr;
            gap: 45px;
            padding-bottom: 38px;
        }

        .footer-brand p {
            max-width: 410px;
            margin: 17px 0 0;
            color: var(--muted);
            font-size: 14px;
        }

        .footer-title {
            margin: 4px 0 16px;
            color: var(--champagne);
            font-family: Georgia, serif;
            font-size: 17px;
        }

        .footer-links {
            display: grid;
            gap: 9px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .footer-links a {
            color: var(--muted);
            font-size: 14px;
        }

        .footer-links a:hover {
            color: var(--gold-bright);
        }

        .footer-note {
            padding-top: 20px;
            border-top: 1px solid var(--line-soft);
            color: #817d77;
            font-size: 12px;
        }

        .responsible-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            margin-top: 17px;
            padding: 7px 11px;
            border: 1px solid rgba(234,211,154,.24);
            border-radius: 999px;
            color: var(--champagne);
            font-size: 12px;
        }

        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            display: grid;
            place-items: center;
            border: 1px solid var(--gold-bright);
            border-radius: 50%;
            color: var(--gold-bright);
            background: rgba(12,12,13,.91);
            box-shadow: 0 4px 20px rgba(255, 191, 0, .25), inset 0 0 0 5px rgba(197,160,89,.08);
            opacity: .78;
            animation: floatCoin 3.2s ease-in-out infinite;
        }

        .fab:hover {
            color: #19130a;
            background: var(--gold-bright);
            opacity: 1;
            transform: scale(1.1);
        }

        .fab:active {
            transform: scale(.95) translateY(2px);
        }

        .fab__icon {
            font-size: 23px;
            transition: transform .55s ease;
        }

        .fab:hover .fab__icon {
            transform: rotate(360deg);
        }

        .fab::after {
            content: "";
            position: absolute;
            top: 1px;
            right: 1px;
            width: 9px;
            height: 9px;
            border: 2px solid #19130a;
            border-radius: 50%;
            background: #d9473b;
            animation: blinkRuby 1.7s ease-in-out infinite;
        }

        @keyframes floatCoin {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }

        @keyframes blinkRuby {
            0%, 100% { opacity: 1; box-shadow: 0 0 0 rgba(217,71,59,0); }
            50% { opacity: .45; box-shadow: 0 0 13px rgba(217,71,59,.9); }
        }

        @media (max-width: 1024px) {
            .nav-shell {
                gap: 13px;
            }

            .brand {
                font-size: 17px;
            }

            .main-nav a {
                padding-inline: 8px;
                font-size: 13px;
            }

            .main-nav a::after {
                left: 8px;
                right: 8px;
            }

            .split-layout, .calculation-layout {
                gap: 35px;
            }

            .trust-layout {
                gap: 35px;
            }
        }

        @media (max-width: 820px) {
            .nav-shell {
                min-height: 70px;
                flex-wrap: wrap;
                padding: 12px 0;
            }

            .main-nav {
                order: 3;
                width: 100%;
                margin-left: 0;
                justify-content: center;
                overflow-x: auto;
                border-top: 1px solid var(--line-soft);
                padding-top: 7px;
            }

            .nav-actions {
                margin-left: auto;
            }

            .hero {
                min-height: 500px;
                padding: 66px 0 60px;
            }

            .split-layout, .calculation-layout, .topics-layout, .latest-layout, .trust-layout, .faq-layout {
                grid-template-columns: 1fr;
            }

            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .result-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .topics-image {
                max-width: 600px;
                min-height: 285px;
            }

            .topics-image img {
                height: 285px;
            }

            .trust-intro {
                padding-right: 0;
            }

            .footer-grid {
                grid-template-columns: 1.2fr .8fr;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 560px) {
            .container {
                width: min(100% - 28px, var(--container));
            }

            .brand {
                font-size: 15px;
            }

            .brand-mark {
                width: 31px;
                height: 31px;
            }

            .nav-actions {
                gap: 2px;
            }

            .login-link {
                padding-inline: 5px;
                font-size: 12px;
            }

            .nav-actions .button {
                min-height: 38px;
                padding-inline: 11px;
                font-size: 12px;
            }

            .main-nav {
                justify-content: flex-start;
            }

            .hero {
                min-height: 570px;
                padding: 55px 0 65px;
            }

            h1 {
                font-size: 38px;
            }

            .hero__intro {
                font-size: 16px;
            }

            .search-box {
                display: block;
                border-radius: 17px;
                padding: 7px;
            }

            .search-box input {
                width: 100%;
                height: 46px;
            }

            .search-box .button {
                width: 100%;
            }

            .hero-actions .button {
                width: 100%;
            }

            .quick-links {
                margin-top: -17px;
            }

            .quick-links__bar {
                display: block;
                padding: 16px;
            }

            .quick-links__label {
                display: block;
                margin-bottom: 11px;
            }

            .quick-links__items {
                justify-content: flex-start;
            }

            .section, .calculation-section, .trust-section, .quick-result {
                padding: 68px 0;
            }

            .formula-panel {
                padding: 24px 18px;
            }

            .scenario-grid, .result-grid, .trust-grid {
                grid-template-columns: 1fr;
            }

            .scenario-card {
                min-height: auto;
            }

            .calculation-visual, .calculation-visual img {
                min-height: 340px;
                height: 340px;
            }

            .result-heading {
                display: block;
            }

            .result-heading .data-badge {
                margin-top: 15px;
            }

            .topic-link {
                padding: 18px 16px;
            }

            .topic-link strong {
                font-size: 18px;
            }

            .latest-list a {
                grid-template-columns: 1fr;
                gap: 7px;
            }

            .latest-arrow {
                display: none;
            }

            .recommendation-panel {
                padding: 23px 19px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-brand {
                grid-column: auto;
            }

            .cta-section {
                padding: 75px 0;
            }

            .cta-actions .button {
                width: 100%;
            }

            .fab {
                left: 14px;
                bottom: 76px;
            }
        }

/* roulang page: article */
:root {
            --bg: #111111;
            --bg-soft: #171719;
            --panel: #1d1d20;
            --panel-light: #242426;
            --gold: #c5a059;
            --gold-bright: #f3c969;
            --champagne: #ead39a;
            --text: #f5f5f7;
            --muted: #aaa7a2;
            --muted-light: #d0cbc2;
            --line: rgba(197, 160, 89, .24);
            --line-soft: rgba(255, 255, 255, .09);
            --danger: #e97867;
            --success: #7ec79a;
            --radius-lg: 28px;
            --radius-md: 18px;
            --radius-sm: 11px;
            --shadow: 0 22px 70px rgba(0, 0, 0, .34);
            --shadow-soft: 0 12px 34px rgba(0, 0, 0, .22);
            --container: 1180px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            color: var(--text);
            background:
                radial-gradient(circle at 7% 4%, rgba(197, 160, 89, .09), transparent 25rem),
                radial-gradient(circle at 94% 45%, rgba(197, 160, 89, .05), transparent 28rem),
                var(--bg);
            font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.65;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            opacity: .18;
            background-image:
                linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
            background-size: 42px 42px;
            mask-image: linear-gradient(to bottom, black, transparent 82%);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease, background-color .25s ease, border-color .25s ease, transform .25s ease, box-shadow .25s ease;
        }

        img {
            display: block;
            max-width: 100%;
            height: auto;
        }

        button,
        input {
            font: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(243, 201, 105, .65);
            outline-offset: 3px;
        }

        .container {
            width: min(100% - 40px, var(--container));
            margin-inline: auto;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 40;
            background: rgba(17, 17, 17, .9);
            border-bottom: 1px solid rgba(197, 160, 89, .16);
            backdrop-filter: blur(18px);
        }

        .nav-shell {
            min-height: 78px;
            display: flex;
            align-items: center;
            gap: 26px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            flex: 0 0 auto;
            font-family: Georgia, "Times New Roman", serif;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: .01em;
            color: var(--champagne);
            white-space: nowrap;
        }

        .brand:hover {
            color: var(--gold-bright);
        }

        .brand-mark {
            width: 35px;
            height: 35px;
            display: grid;
            place-items: center;
            border: 1px solid var(--gold);
            border-radius: 50%;
            color: var(--gold-bright);
            font-size: 14px;
            box-shadow: inset 0 0 0 4px rgba(197, 160, 89, .08);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 5px;
            margin-left: auto;
        }

        .main-nav a {
            position: relative;
            padding: 10px 13px;
            color: var(--muted);
            font-size: 14px;
            white-space: nowrap;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 13px;
            right: 13px;
            bottom: 3px;
            height: 1px;
            background: var(--gold-bright);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .25s ease;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text);
        }

        .main-nav a:hover::after,
        .main-nav a.active::after {
            transform: scaleX(1);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 0 0 auto;
        }

        .login-link {
            color: var(--muted-light);
            padding: 10px 9px;
            font-size: 14px;
            white-space: nowrap;
        }

        .login-link:hover {
            color: var(--gold-bright);
        }

        .button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 46px;
            padding: 0 19px;
            border: 1px solid transparent;
            border-radius: 999px;
            font-weight: 700;
            font-size: 14px;
            line-height: 1;
            cursor: pointer;
            transition: transform .25s ease, box-shadow .25s ease, background-color .25s ease, color .25s ease;
        }

        .button:hover {
            transform: translateY(-2px);
        }

        .button:active {
            transform: translateY(1px);
        }

        .button--gold {
            color: #18130b;
            background: linear-gradient(135deg, var(--gold-bright), var(--gold));
            box-shadow: 0 10px 28px rgba(197, 160, 89, .2);
        }

        .button--gold:hover {
            color: #18130b;
            box-shadow: 0 14px 35px rgba(197, 160, 89, .34);
        }

        .button--outline {
            color: var(--champagne);
            border-color: rgba(197, 160, 89, .58);
            background: rgba(197, 160, 89, .06);
        }

        .button--outline:hover {
            color: var(--text);
            border-color: var(--gold-bright);
            background: rgba(197, 160, 89, .13);
        }

        .button--quiet {
            color: var(--muted-light);
            border-color: var(--line-soft);
            background: rgba(255,255,255,.035);
        }

        .button--quiet:hover {
            color: var(--text);
            border-color: var(--line);
        }

        .article-hero {
            position: relative;
            min-height: 445px;
            display: flex;
            align-items: flex-end;
            padding: 82px 0 70px;
            isolation: isolate;
            background-image:
                linear-gradient(90deg, rgba(10, 10, 10, .95) 0%, rgba(17, 17, 17, .82) 45%, rgba(17, 17, 17, .5) 100%),
                url("/assets/images/backpic/back-2.jpg");
            background-position: center;
            background-size: cover;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            z-index: -1;
            inset: 0;
            background: linear-gradient(0deg, var(--bg) 0%, transparent 38%);
        }

        .article-hero__inner {
            width: 100%;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            margin: 0 0 18px;
            color: var(--gold-bright);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .14em;
            text-transform: uppercase;
        }

        .eyebrow::before {
            content: "";
            width: 28px;
            height: 1px;
            background: var(--gold-bright);
        }

        .article-hero h1 {
            max-width: 900px;
            margin: 0;
            color: var(--text);
            font-family: Georgia, "Times New Roman", serif;
            font-size: clamp(2.15rem, 5vw, 4.7rem);
            font-weight: 700;
            letter-spacing: -.045em;
            line-height: 1.08;
            text-wrap: balance;
        }

        .hero-summary {
            max-width: 760px;
            margin: 23px 0 0;
            color: var(--muted-light);
            font-size: clamp(1rem, 1.6vw, 1.18rem);
            line-height: 1.7;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px 22px;
            margin-top: 26px;
            color: var(--muted);
            font-size: 13px;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .meta-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--gold);
        }

        .reading-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 318px;
            gap: 56px;
            align-items: start;
            padding: 76px 0 88px;
        }

        .article-main {
            min-width: 0;
            max-width: 760px;
        }

        .article-lead {
            padding: 25px 28px;
            margin-bottom: 34px;
            border-left: 3px solid var(--gold);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            background: linear-gradient(135deg, rgba(197, 160, 89, .14), rgba(255,255,255,.025));
            color: var(--muted-light);
            font-size: 1.08rem;
        }

        .article-lead strong {
            color: var(--champagne);
        }

        .article-copy {
            color: var(--muted-light);
            font-size: 1.04rem;
            line-height: 1.78;
        }

        .article-copy h2,
        .article-copy h3,
        .article-copy h4 {
            margin: 42px 0 14px;
            color: var(--text);
            font-family: Georgia, "Times New Roman", serif;
            line-height: 1.2;
            letter-spacing: -.02em;
        }

        .article-copy h2 {
            font-size: clamp(1.7rem, 3vw, 2.35rem);
            padding-top: 18px;
            border-top: 1px solid var(--line-soft);
        }

        .article-copy h3 {
            font-size: 1.45rem;
        }

        .article-copy h4 {
            font-size: 1.2rem;
        }

        .article-copy p {
            margin: 0 0 21px;
        }

        .article-copy a {
            color: var(--gold-bright);
            text-decoration: underline;
            text-decoration-color: rgba(243, 201, 105, .42);
            text-underline-offset: 4px;
        }

        .article-copy a:hover {
            color: var(--text);
        }

        .article-copy ul,
        .article-copy ol {
            margin: 0 0 24px 22px;
            padding: 0;
        }

        .article-copy li {
            margin: 9px 0;
            padding-left: 5px;
        }

        .article-copy li::marker {
            color: var(--gold);
        }

        .article-copy blockquote {
            margin: 30px 0;
            padding: 22px 26px;
            border-left: 3px solid var(--gold-bright);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            background: var(--panel);
            color: var(--champagne);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 1.2rem;
        }

        .article-copy img {
            width: 100%;
            margin: 28px 0;
            border-radius: var(--radius-md);
            border: 1px solid var(--line-soft);
            box-shadow: var(--shadow-soft);
        }

        .article-copy table {
            width: 100%;
            margin: 26px 0;
            border-collapse: collapse;
            overflow: hidden;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-sm);
            background: rgba(255,255,255,.025);
        }

        .article-copy th,
        .article-copy td {
            padding: 13px 15px;
            border-bottom: 1px solid var(--line-soft);
            text-align: left;
        }

        .article-copy th {
            color: var(--champagne);
            background: rgba(197, 160, 89, .1);
        }

        .article-copy tr:last-child td {
            border-bottom: 0;
        }

        .article-copy code {
            padding: 2px 6px;
            border-radius: 5px;
            color: var(--champagne);
            background: #0b0b0c;
        }

        .missing-content {
            padding: 45px 30px;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            background: var(--panel);
            text-align: left;
        }

        .missing-content h2 {
            margin: 0 0 10px;
            color: var(--text);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 2rem;
        }

        .missing-content p {
            margin: 0 0 24px;
            color: var(--muted);
        }

        .sidebar {
            position: sticky;
            top: 104px;
            display: grid;
            gap: 20px;
        }

        .side-card {
            overflow: hidden;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-lg);
            background: linear-gradient(155deg, rgba(36,36,38,.96), rgba(24,24,26,.94));
            box-shadow: var(--shadow-soft);
        }

        .side-card__image {
            position: relative;
            height: 170px;
            overflow: hidden;
        }

        .side-card__image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(17,17,17,.5), transparent 55%);
        }

        .side-card__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .side-card:hover .side-card__image img {
            transform: scale(1.05);
        }

        .side-card__body {
            padding: 23px;
        }

        .side-label {
            display: inline-block;
            margin-bottom: 10px;
            color: var(--gold-bright);
            font-size: 11px;
            font-weight: 800;
            letter-spacing: .12em;
            text-transform: uppercase;
        }

        .side-card h2 {
            margin: 0 0 10px;
            color: var(--text);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 1.42rem;
            line-height: 1.25;
        }

        .side-card p {
            margin: 0 0 18px;
            color: var(--muted);
            font-size: .94rem;
            line-height: 1.65;
        }

        .side-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--champagne);
            font-size: .9rem;
            font-weight: 700;
        }

        .side-link::after {
            content: "→";
            color: var(--gold-bright);
            transition: transform .25s ease;
        }

        .side-link:hover {
            color: var(--gold-bright);
        }

        .side-link:hover::after {
            transform: translateX(4px);
        }

        .quick-nav {
            padding: 22px 23px;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-lg);
            background: rgba(255,255,255,.035);
        }

        .quick-nav h3 {
            margin: 0 0 14px;
            color: var(--champagne);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 1.22rem;
        }

        .quick-nav ul {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .quick-nav li {
            border-top: 1px solid var(--line-soft);
        }

        .quick-nav li:first-child {
            border-top: 0;
        }

        .quick-nav a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            padding: 12px 0;
            color: var(--muted-light);
            font-size: .92rem;
        }

        .quick-nav a::after {
            content: "↗";
            color: var(--gold);
            font-size: 1rem;
        }

        .quick-nav a:hover {
            color: var(--gold-bright);
            padding-left: 4px;
        }

        .section {
            padding: 88px 0;
        }

        .section--soft {
            background: linear-gradient(180deg, rgba(255,255,255,.025), transparent);
            border-top: 1px solid rgba(255,255,255,.035);
            border-bottom: 1px solid rgba(255,255,255,.035);
        }

        .section-heading {
            max-width: 690px;
            margin-bottom: 38px;
        }

        .section-heading h2 {
            margin: 0 0 13px;
            color: var(--text);
            font-family: Georgia, "Times New Roman", serif;
            font-size: clamp(1.9rem, 3.5vw, 3rem);
            letter-spacing: -.035em;
            line-height: 1.12;
        }

        .section-heading p {
            margin: 0;
            color: var(--muted);
            font-size: 1rem;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 22px;
        }

        .related-card {
            display: grid;
            grid-template-columns: 145px minmax(0, 1fr);
            min-height: 170px;
            overflow: hidden;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-lg);
            background: var(--panel);
            transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease;
        }

        .related-card:hover {
            transform: translateY(-5px);
            border-color: rgba(197,160,89,.6);
            box-shadow: var(--shadow-soft);
        }

        .related-card__image {
            overflow: hidden;
        }

        .related-card__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .45s ease;
        }

        .related-card:hover img {
            transform: scale(1.08);
        }

        .related-card__body {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            padding: 23px;
        }

        .related-card__body h3 {
            margin: 0 0 9px;
            color: var(--text);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 1.3rem;
            line-height: 1.25;
        }

        .related-card__body p {
            margin: 0 0 17px;
            color: var(--muted);
            font-size: .91rem;
            line-height: 1.55;
        }

        .text-link {
            margin-top: auto;
            color: var(--gold-bright);
            font-size: .9rem;
            font-weight: 700;
        }

        .text-link:hover {
            color: var(--text);
        }

        .faq-list {
            max-width: 880px;
            border-top: 1px solid var(--line-soft);
        }

        .faq-item {
            border-bottom: 1px solid var(--line-soft);
        }

        .faq-item summary {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 22px;
            padding: 23px 42px 23px 0;
            color: var(--text);
            cursor: pointer;
            font-size: 1.05rem;
            font-weight: 700;
            list-style: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "+";
            position: absolute;
            right: 4px;
            color: var(--gold-bright);
            font-size: 1.6rem;
            font-weight: 400;
            transition: transform .25s ease;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-width: 760px;
            padding: 0 38px 23px 0;
            color: var(--muted);
            line-height: 1.7;
        }

        .cta-panel {
            position: relative;
            overflow: hidden;
            padding: 58px clamp(25px, 6vw, 76px);
            border: 1px solid rgba(197,160,89,.42);
            border-radius: var(--radius-lg);
            background:
                linear-gradient(115deg, rgba(197,160,89,.17), rgba(255,255,255,.035) 52%, rgba(197,160,89,.08)),
                var(--panel);
            box-shadow: var(--shadow);
        }

        .cta-panel::before {
            content: "1¾";
            position: absolute;
            top: -55px;
            right: 40px;
            color: rgba(243,201,105,.08);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 220px;
            line-height: 1;
            pointer-events: none;
        }

        .cta-panel__content {
            position: relative;
            max-width: 700px;
        }

        .cta-panel h2 {
            margin: 0 0 13px;
            color: var(--text);
            font-family: Georgia, "Times New Roman", serif;
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
            line-height: 1.14;
        }

        .cta-panel p {
            margin: 0 0 25px;
            color: var(--muted-light);
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .trust-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 28px;
        }

        .trust-badge,
        .responsible-badge {
            display: inline-flex;
            align-items: center;
            min-height: 31px;
            padding: 0 12px;
            border: 1px solid var(--line);
            border-radius: 999px;
            color: var(--muted-light);
            background: rgba(197,160,89,.06);
            font-size: 12px;
        }

        .site-footer {
            padding: 65px 0 25px;
            border-top: 1px solid rgba(197,160,89,.18);
            background: #0c0c0d;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.45fr .8fr .95fr;
            gap: 45px;
            padding-bottom: 40px;
        }

        .footer-brand .brand {
            margin-bottom: 16px;
        }

        .footer-brand p {
            max-width: 370px;
            margin: 0 0 19px;
            color: var(--muted);
            font-size: .93rem;
            line-height: 1.7;
        }

        .footer-title {
            margin: 5px 0 15px;
            color: var(--champagne);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 1.12rem;
        }

        .footer-links {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 9px;
        }

        .footer-links a {
            color: var(--muted);
            font-size: .91rem;
        }

        .footer-links a:hover {
            color: var(--gold-bright);
            padding-left: 3px;
        }

        .footer-note {
            padding-top: 22px;
            border-top: 1px solid var(--line-soft);
            color: #807d78;
            font-size: .8rem;
        }

        .floating-support {
            position: fixed;
            left: 16px;
            bottom: 24px;
            z-index: 50;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            min-height: 52px;
            padding: 0 16px 0 12px;
            border: 1px solid var(--gold);
            border-radius: 999px;
            color: var(--champagne);
            background: rgba(12,12,13,.92);
            box-shadow: 0 4px 20px rgba(255,215,0,.18);
            opacity: .78;
            animation: gentleFloat 3.8s ease-in-out infinite;
        }

        .floating-support:hover {
            color: var(--text);
            border-color: var(--gold-bright);
            box-shadow: 0 8px 28px rgba(243,201,105,.32);
            opacity: 1;
            transform: scale(1.06);
        }

        .floating-support:active {
            transform: scale(.96) translateY(2px);
        }

        .floating-support__icon {
            width: 28px;
            height: 28px;
            display: grid;
            place-items: center;
            border: 1px solid var(--gold);
            border-radius: 50%;
            color: var(--gold-bright);
            font-size: 14px;
        }

        .floating-support__dot {
            position: absolute;
            top: 0;
            right: 3px;
            width: 8px;
            height: 8px;
            border: 2px solid #111;
            border-radius: 50%;
            background: #d64040;
            animation: blinkDot 1.5s ease-in-out infinite;
        }

        @keyframes gentleFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-5px); }
        }

        @keyframes blinkDot {
            0%, 100% { opacity: 1; }
            50% { opacity: .3; }
        }

        @media (max-width: 1024px) {
            .nav-shell {
                gap: 16px;
            }

            .main-nav a {
                padding-inline: 8px;
                font-size: 13px;
            }

            .main-nav a::after {
                left: 8px;
                right: 8px;
            }

            .reading-layout {
                grid-template-columns: minmax(0, 1fr) 280px;
                gap: 32px;
            }

            .footer-grid {
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .container {
                width: min(100% - 30px, var(--container));
            }

            .nav-shell {
                min-height: 72px;
                flex-wrap: wrap;
                gap: 10px 14px;
                padding: 11px 0;
            }

            .brand {
                font-size: 17px;
            }

            .brand-mark {
                width: 32px;
                height: 32px;
            }

            .nav-actions {
                margin-left: auto;
            }

            .nav-actions .button {
                min-height: 40px;
                padding-inline: 13px;
                font-size: 12px;
            }

            .login-link {
                padding-inline: 4px;
                font-size: 12px;
            }

            .main-nav {
                order: 3;
                width: 100%;
                margin-left: 0;
                overflow-x: auto;
                scrollbar-width: none;
                border-top: 1px solid rgba(255,255,255,.06);
            }

            .main-nav::-webkit-scrollbar {
                display: none;
            }

            .main-nav a {
                padding: 9px 11px 8px;
            }

            .article-hero {
                min-height: 420px;
                padding: 70px 0 55px;
                background-position: 58% center;
            }

            .article-hero h1 {
                font-size: clamp(2rem, 8vw, 3.35rem);
            }

            .reading-layout {
                display: block;
                padding: 55px 0 65px;
            }

            .article-main {
                max-width: none;
            }

            .sidebar {
                position: static;
                grid-template-columns: repeat(2, minmax(0, 1fr));
                margin-top: 50px;
            }

            .quick-nav {
                grid-column: 1 / -1;
            }

            .section {
                padding: 65px 0;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .container {
                width: min(100% - 24px, var(--container));
            }

            .nav-actions {
                gap: 2px;
            }

            .nav-actions .button {
                padding-inline: 10px;
            }

            .article-hero {
                min-height: 465px;
                padding-top: 58px;
            }

            .article-meta {
                gap: 8px 13px;
            }

            .article-lead {
                padding: 20px;
                font-size: 1rem;
            }

            .article-copy {
                font-size: 1rem;
            }

            .article-copy h2 {
                font-size: 1.75rem;
            }

            .related-grid,
            .sidebar {
                grid-template-columns: 1fr;
            }

            .related-card {
                grid-template-columns: 112px minmax(0, 1fr);
            }

            .quick-nav {
                grid-column: auto;
            }

            .side-card__image {
                height: 145px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 27px;
            }

            .footer-brand {
                grid-column: auto;
            }

            .cta-panel {
                padding: 42px 22px;
            }

            .cta-panel::before {
                right: -18px;
                font-size: 150px;
            }

            .cta-actions .button {
                width: 100%;
            }

            .floating-support {
                left: 12px;
                bottom: 16px;
                min-height: 50px;
                padding-right: 13px;
            }
        }

/* roulang page: category1 */
:root {
            --bg: #111111;
            --bg-soft: #171719;
            --panel: #1d1d20;
            --panel-light: #242426;
            --gold: #c5a059;
            --gold-bright: #f3c969;
            --champagne: #ead39a;
            --text: #f5f5f7;
            --muted: #aaa7a2;
            --muted-light: #d0cbc2;
            --line: rgba(197, 160, 89, .24);
            --line-soft: rgba(255, 255, 255, .09);
            --danger: #e97867;
            --success: #7ec79a;
            --cyan: #65d7dc;
            --radius-lg: 28px;
            --radius-md: 18px;
            --radius-sm: 11px;
            --shadow: 0 22px 70px rgba(0, 0, 0, .34);
            --shadow-soft: 0 12px 34px rgba(0, 0, 0, .22);
            --container: 1180px;
        }

        html {
            scroll-behavior: smooth;
        }

        * {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            color: var(--text);
            background:
                radial-gradient(circle at 7% 4%, rgba(197, 160, 89, .09), transparent 25rem),
                radial-gradient(circle at 94% 45%, rgba(197, 160, 89, .05), transparent 28rem),
                var(--bg);
            font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.65;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            opacity: .18;
            background-image:
                linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
            background-size: 42px 42px;
            mask-image: linear-gradient(to bottom, black, transparent 82%);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease, background-color .25s ease, border-color .25s ease, transform .25s ease, box-shadow .25s ease;
        }

        img {
            display: block;
            max-width: 100%;
            height: auto;
        }

        button,
        input,
        select {
            font: inherit;
        }

        button,
        select {
            cursor: pointer;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 3px solid rgba(243, 201, 105, .65);
            outline-offset: 3px;
        }

        .container {
            width: min(100% - 40px, var(--container));
            margin-inline: auto;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 40;
            background: rgba(17, 17, 17, .92);
            border-bottom: 1px solid rgba(197, 160, 89, .16);
            backdrop-filter: blur(18px);
        }

        .nav-shell {
            min-height: 78px;
            display: flex;
            align-items: center;
            gap: 26px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            flex: 0 0 auto;
            font-family: Georgia, "Times New Roman", serif;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: .01em;
            color: var(--champagne);
            white-space: nowrap;
        }

        .brand:hover {
            color: var(--gold-bright);
        }

        .brand-mark {
            width: 35px;
            height: 35px;
            display: grid;
            place-items: center;
            border: 1px solid var(--gold);
            border-radius: 50%;
            color: var(--gold-bright);
            font-size: 14px;
            box-shadow: inset 0 0 0 4px rgba(197, 160, 89, .08);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 5px;
            margin-left: auto;
        }

        .main-nav a {
            position: relative;
            padding: 10px 13px;
            color: var(--muted);
            font-size: 14px;
            white-space: nowrap;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 13px;
            right: 13px;
            bottom: 3px;
            height: 1px;
            background: var(--gold-bright);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .25s ease;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text);
        }

        .main-nav a:hover::after,
        .main-nav a.active::after {
            transform: scaleX(1);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 0 0 auto;
        }

        .login-link {
            padding: 10px 8px;
            color: var(--muted-light);
            font-size: 14px;
        }

        .login-link:hover {
            color: var(--gold-bright);
        }

        .button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 46px;
            padding: 0 19px;
            border: 1px solid transparent;
            border-radius: 999px;
            font-weight: 700;
            font-size: 14px;
            line-height: 1;
            cursor: pointer;
            transition: transform .25s ease, box-shadow .25s ease, background-color .25s ease, color .25s ease;
        }

        .button:hover {
            transform: translateY(-2px);
        }

        .button:active {
            transform: translateY(1px);
        }

        .button--gold {
            color: #18130b;
            background: linear-gradient(135deg, var(--gold-bright), var(--gold));
            box-shadow: 0 10px 28px rgba(197, 160, 89, .2);
        }

        .button--gold:hover {
            color: #18130b;
            box-shadow: 0 14px 35px rgba(197, 160, 89, .34);
        }

        .button--outline {
            color: var(--champagne);
            border-color: rgba(197, 160, 89, .58);
            background: rgba(197, 160, 89, .06);
        }

        .button--outline:hover {
            color: var(--text);
            border-color: var(--gold-bright);
            background: rgba(197, 160, 89, .13);
        }

        .button--quiet {
            color: var(--muted-light);
            border-color: var(--line-soft);
            background: rgba(255,255,255,.035);
        }

        .button--quiet:hover {
            color: var(--text);
            border-color: var(--line);
        }

        .hero {
            position: relative;
            min-height: 590px;
            display: flex;
            align-items: center;
            padding: 80px 0 76px;
            background-image:
                linear-gradient(90deg, rgba(9, 9, 10, .97) 0%, rgba(12, 12, 13, .86) 43%, rgba(12, 12, 13, .47) 100%),
                url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--line);
        }

        .hero::after {
            content: "";
            position: absolute;
            inset: auto 0 0;
            height: 140px;
            background: linear-gradient(transparent, var(--bg));
            pointer-events: none;
        }

        .hero-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: minmax(0, 1.06fr) minmax(330px, .74fr);
            gap: 72px;
            align-items: center;
        }

        .eyebrow,
        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: var(--gold-bright);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .14em;
            text-transform: uppercase;
        }

        .eyebrow::before,
        .section-kicker::before {
            content: "";
            width: 28px;
            height: 1px;
            background: var(--gold-bright);
        }

        h1,
        h2,
        h3,
        p {
            margin-top: 0;
        }

        h1,
        h2,
        h3 {
            font-family: Georgia, "Times New Roman", serif;
            font-weight: 700;
            line-height: 1.15;
        }

        h1 {
            max-width: 760px;
            margin: 21px 0 22px;
            color: var(--text);
            font-size: clamp(36px, 5vw, 66px);
            letter-spacing: -.035em;
        }

        .hero-copy {
            max-width: 670px;
            color: var(--muted-light);
            font-size: 18px;
            line-height: 1.75;
        }

        .hero-copy strong {
            color: var(--champagne);
            font-weight: 700;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 31px;
        }

        .hero-note {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 13px 20px;
            margin-top: 24px;
            color: var(--muted);
            font-size: 13px;
        }

        .hero-note span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .hero-note span::before {
            content: "✓";
            color: var(--success);
            font-weight: 800;
        }

        .countdown-strip {
            display: inline-flex;
            align-items: center;
            gap: 13px;
            margin-top: 28px;
            padding: 9px 14px;
            color: var(--muted-light);
            border: 1px solid rgba(197, 160, 89, .28);
            border-radius: 999px;
            background: rgba(17,17,17,.58);
            font-size: 13px;
        }

        .countdown-strip b {
            min-width: 46px;
            color: var(--gold-bright);
            font-variant-numeric: tabular-nums;
        }

        .hero-panel {
            position: relative;
            padding: 28px;
            overflow: hidden;
            border: 1px solid rgba(234, 211, 154, .32);
            border-radius: var(--radius-lg);
            background: linear-gradient(145deg, rgba(39, 36, 31, .94), rgba(24, 24, 26, .92));
            box-shadow: var(--shadow);
        }

        .hero-panel::before {
            content: "";
            position: absolute;
            width: 190px;
            height: 190px;
            top: -80px;
            right: -55px;
            border-radius: 50%;
            background: rgba(243, 201, 105, .12);
            filter: blur(4px);
        }

        .panel-label {
            position: relative;
            margin-bottom: 21px;
            color: var(--muted);
            font-size: 12px;
            letter-spacing: .1em;
            text-transform: uppercase;
        }

        .fraction-display {
            position: relative;
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 26px;
        }

        .fraction-number {
            color: var(--gold-bright);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 74px;
            line-height: .9;
        }

        .fraction-caption {
            max-width: 170px;
            color: var(--muted-light);
            font-size: 14px;
            line-height: 1.45;
        }

        .split-rule {
            height: 1px;
            margin: 19px 0;
            background: var(--line);
        }

        .split-line {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            padding: 10px 0;
            color: var(--muted-light);
            font-size: 14px;
        }

        .split-line strong {
            color: var(--text);
            font-size: 21px;
        }

        .panel-footnote {
            margin: 17px 0 0;
            color: var(--muted);
            font-size: 13px;
        }

        .section {
            padding: 100px 0;
        }

        .section--compact {
            padding-top: 72px;
            padding-bottom: 72px;
        }

        .section-heading {
            max-width: 720px;
            margin-bottom: 45px;
        }

        .section-heading h2 {
            margin: 14px 0 14px;
            color: var(--text);
            font-size: clamp(30px, 4vw, 48px);
            letter-spacing: -.025em;
        }

        .section-heading p {
            margin-bottom: 0;
            color: var(--muted-light);
            font-size: 17px;
        }

        .intro-layout {
            display: grid;
            grid-template-columns: minmax(0, .83fr) minmax(0, 1.17fr);
            gap: 70px;
            align-items: start;
        }

        .intro-lead {
            color: var(--champagne);
            font-family: Georgia, "Times New Roman", serif;
            font-size: clamp(24px, 3vw, 35px);
            line-height: 1.3;
        }

        .intro-text {
            color: var(--muted-light);
        }

        .intro-text p:last-child {
            margin-bottom: 0;
        }

        .feature-stack {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 42px;
        }

        .feature-item {
            min-height: 190px;
            padding: 25px 22px;
            border-top: 1px solid var(--gold);
            background: linear-gradient(180deg, rgba(197,160,89,.08), transparent 70%);
        }

        .feature-index {
            display: block;
            margin-bottom: 24px;
            color: var(--gold-bright);
            font-size: 13px;
            font-weight: 800;
            letter-spacing: .1em;
        }

        .feature-item h3 {
            margin-bottom: 10px;
            color: var(--text);
            font-size: 22px;
        }

        .feature-item p {
            margin-bottom: 0;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.6;
        }

        .visual-split {
            display: grid;
            grid-template-columns: minmax(280px, .87fr) minmax(0, 1.13fr);
            gap: 64px;
            align-items: center;
        }

        .image-frame {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
        }

        .image-frame img {
            width: 100%;
            min-height: 390px;
            object-fit: cover;
            filter: saturate(.78) contrast(1.05);
        }

        .image-frame::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(197,160,89,.13), transparent 55%);
            pointer-events: none;
        }

        .image-badge {
            position: absolute;
            z-index: 1;
            left: 22px;
            bottom: 22px;
            max-width: 220px;
            padding: 13px 15px;
            border: 1px solid rgba(243,201,105,.46);
            border-radius: var(--radius-sm);
            background: rgba(17,17,17,.84);
            color: var(--champagne);
            font-size: 13px;
            backdrop-filter: blur(12px);
        }

        .step-list {
            display: grid;
            gap: 24px;
            margin: 28px 0 0;
        }

        .step-item {
            display: grid;
            grid-template-columns: 42px minmax(0, 1fr);
            gap: 17px;
            align-items: start;
        }

        .step-number {
            width: 38px;
            height: 38px;
            display: grid;
            place-items: center;
            border: 1px solid var(--gold);
            border-radius: 50%;
            color: var(--gold-bright);
            font-family: Georgia, "Times New Roman", serif;
            font-weight: 700;
        }

        .step-item h3 {
            margin-bottom: 5px;
            color: var(--text);
            font-size: 20px;
        }

        .step-item p {
            margin-bottom: 0;
            color: var(--muted);
            font-size: 15px;
        }

        .scenario-section {
            padding: 84px 0;
            background: linear-gradient(115deg, #191719, #111111 62%);
            border-top: 1px solid var(--line-soft);
            border-bottom: 1px solid var(--line-soft);
        }

        .scenario-intro {
            display: flex;
            justify-content: space-between;
            align-items: end;
            gap: 40px;
            margin-bottom: 34px;
        }

        .scenario-intro .section-heading {
            margin-bottom: 0;
        }

        .scenario-tag {
            flex: 0 0 auto;
            padding: 9px 14px;
            border: 1px solid rgba(126,199,154,.35);
            border-radius: 999px;
            color: var(--success);
            background: rgba(126,199,154,.07);
            font-size: 13px;
        }

        .scenario-list {
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            background: rgba(255,255,255,.025);
        }

        .scenario-row {
            display: grid;
            grid-template-columns: 1fr 1.08fr 1.3fr 1fr;
            gap: 20px;
            align-items: center;
            padding: 20px 24px;
            border-bottom: 1px solid var(--line-soft);
        }

        .scenario-row:last-child {
            border-bottom: 0;
        }

        .scenario-row--head {
            color: var(--muted);
            background: rgba(197,160,89,.08);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .08em;
            text-transform: uppercase;
        }

        .scenario-row strong {
            color: var(--text);
            font-size: 16px;
        }

        .scenario-row span {
            color: var(--muted-light);
            font-size: 14px;
        }

        .result-win {
            color: var(--success) !important;
            font-weight: 700;
        }

        .result-loss {
            color: var(--danger) !important;
            font-weight: 700;
        }

        .result-push {
            color: var(--gold-bright) !important;
            font-weight: 700;
        }

        .formula-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) minmax(300px, .76fr);
            gap: 42px;
            align-items: start;
        }

        .formula-box {
            padding: 30px;
            border-left: 3px solid var(--gold);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            background: linear-gradient(100deg, rgba(197,160,89,.12), rgba(255,255,255,.025));
        }

        .formula-box h3 {
            margin-bottom: 17px;
            color: var(--champagne);
            font-size: 25px;
        }

        .formula {
            display: inline-block;
            margin: 4px 0 18px;
            color: var(--gold-bright);
            font-family: Georgia, "Times New Roman", serif;
            font-size: clamp(23px, 3vw, 35px);
        }

        .formula-box p {
            margin-bottom: 0;
            color: var(--muted-light);
        }

        .data-badges {
            display: grid;
            gap: 12px;
        }

        .data-badge {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 15px;
            padding: 17px 19px;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-sm);
            background: var(--panel);
        }

        .data-badge span {
            color: var(--muted);
            font-size: 13px;
        }

        .data-badge strong {
            color: var(--champagne);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 22px;
        }

        .calculator-section {
            padding: 98px 0;
            background:
                linear-gradient(135deg, rgba(197,160,89,.08), transparent 38%),
                var(--bg-soft);
        }

        .calculator-layout {
            display: grid;
            grid-template-columns: minmax(0, .95fr) minmax(330px, .75fr);
            gap: 55px;
            align-items: center;
        }

        .calculator-card {
            padding: 31px;
            border: 1px solid rgba(197,160,89,.33);
            border-radius: var(--radius-lg);
            background: var(--panel);
            box-shadow: var(--shadow-soft);
        }

        .calculator-card h3 {
            margin-bottom: 7px;
            color: var(--text);
            font-size: 26px;
        }

        .calculator-card > p {
            margin-bottom: 25px;
            color: var(--muted);
            font-size: 14px;
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 17px;
        }

        .field label {
            display: block;
            margin-bottom: 7px;
            color: var(--muted-light);
            font-size: 13px;
            font-weight: 700;
        }

        .field input,
        .field select {
            width: 100%;
            height: 48px;
            margin: 0;
            padding: 0 14px;
            color: var(--text);
            border: 1px solid rgba(255,255,255,.13);
            border-radius: var(--radius-sm);
            outline: 0;
            background: #141416;
            box-shadow: none;
        }

        .field input:focus,
        .field select:focus {
            border-color: var(--gold-bright);
            background: #18181b;
            box-shadow: 0 0 0 3px rgba(243,201,105,.1);
        }

        .calculator-card .button {
            width: 100%;
            margin-top: 21px;
        }

        .calc-result {
            min-height: 84px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            margin-top: 17px;
            padding: 14px 16px;
            border: 1px solid rgba(126,199,154,.28);
            border-radius: var(--radius-sm);
            background: rgba(126,199,154,.07);
        }

        .calc-result strong {
            color: var(--success);
            font-size: 20px;
        }

        .calc-result span {
            color: var(--muted-light);
            font-size: 13px;
        }

        .calculator-copy h2 {
            margin: 14px 0 17px;
            color: var(--text);
            font-size: clamp(30px, 4vw, 46px);
        }

        .calculator-copy p {
            color: var(--muted-light);
        }

        .calculator-copy ul {
            margin: 23px 0 0;
            padding: 0;
            list-style: none;
        }

        .calculator-copy li {
            position: relative;
            margin: 12px 0;
            padding-left: 27px;
            color: var(--muted-light);
        }

        .calculator-copy li::before {
            content: "◆";
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--gold-bright);
            font-size: 11px;
        }

        .payment-note {
            margin-top: 22px;
            padding: 13px 16px;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-sm);
            color: var(--muted);
            font-size: 12px;
            line-height: 1.55;
        }

        .quote-section {
            padding: 92px 0;
        }

        .quote-layout {
            display: grid;
            grid-template-columns: minmax(0, 1.15fr) minmax(260px, .65fr);
            gap: 60px;
            align-items: center;
        }

        blockquote {
            margin: 0;
            padding: 0 0 0 30px;
            border-left: 2px solid var(--gold);
            color: var(--champagne);
            font-family: Georgia, "Times New Roman", serif;
            font-size: clamp(25px, 3.3vw, 42px);
            line-height: 1.3;
        }

        .quote-byline {
            margin: 21px 0 0 32px;
            color: var(--muted);
            font-size: 13px;
        }

        .quote-aside {
            padding: 25px;
            border-radius: var(--radius-md);
            background: var(--panel);
        }

        .quote-aside strong {
            display: block;
            margin-bottom: 8px;
            color: var(--gold-bright);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 32px;
        }

        .quote-aside p {
            margin-bottom: 0;
            color: var(--muted);
            font-size: 14px;
        }

        .faq-section {
            padding: 92px 0 102px;
            background: var(--bg-soft);
            border-top: 1px solid var(--line-soft);
        }

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 14px 22px;
        }

        .faq-item {
            padding: 21px 23px;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-md);
            background: rgba(255,255,255,.025);
        }

        .faq-item[open] {
            border-color: rgba(197,160,89,.46);
            background: rgba(197,160,89,.06);
        }

        .faq-item summary {
            position: relative;
            padding-right: 28px;
            color: var(--text);
            font-weight: 700;
            cursor: pointer;
            list-style: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "+";
            position: absolute;
            top: -4px;
            right: 0;
            color: var(--gold-bright);
            font-size: 24px;
            font-weight: 400;
        }

        .faq-item[open] summary::after {
            content: "−";
        }

        .faq-item p {
            margin: 13px 0 0;
            color: var(--muted-light);
            font-size: 14px;
        }

        .cta-band {
            position: relative;
            overflow: hidden;
            padding: 80px 0 86px;
            text-align: center;
            background:
                radial-gradient(circle at 50% 0%, rgba(243,201,105,.2), transparent 28rem),
                linear-gradient(135deg, #24201a, #171719 62%);
            border-top: 1px solid rgba(197,160,89,.2);
        }

        .cta-band::before,
        .cta-band::after {
            content: "";
            position: absolute;
            border: 1px solid rgba(197,160,89,.22);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-band::before {
            width: 350px;
            height: 350px;
            left: -170px;
            top: -190px;
        }

        .cta-band::after {
            width: 290px;
            height: 290px;
            right: -120px;
            bottom: -180px;
        }

        .cta-band h2 {
            position: relative;
            z-index: 1;
            max-width: 780px;
            margin: 14px auto 15px;
            color: var(--text);
            font-size: clamp(30px, 4vw, 48px);
        }

        .cta-band p {
            position: relative;
            z-index: 1;
            max-width: 670px;
            margin: 0 auto 27px;
            color: var(--muted-light);
        }

        .cta-band .button {
            position: relative;
            z-index: 1;
            margin: 0 4px;
        }

        .site-footer {
            padding: 67px 0 27px;
            background: #0d0d0e;
            border-top: 1px solid var(--line-soft);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr .8fr .8fr;
            gap: 55px;
            padding-bottom: 48px;
        }

        .footer-brand .brand {
            margin-bottom: 17px;
        }

        .footer-brand p {
            max-width: 400px;
            margin-bottom: 18px;
            color: var(--muted);
            font-size: 14px;
        }

        .responsible-badge {
            display: inline-flex;
            padding: 7px 11px;
            border: 1px solid rgba(234,211,154,.3);
            border-radius: 999px;
            color: var(--champagne);
            font-size: 12px;
        }

        .footer-title {
            margin: 3px 0 17px;
            color: var(--text);
            font-family: Inter, ui-sans-serif, system-ui, sans-serif;
            font-size: 14px;
            font-weight: 800;
        }

        .footer-links {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: var(--muted);
            font-size: 14px;
        }

        .footer-links a:hover {
            color: var(--gold-bright);
            padding-left: 3px;
        }

        .footer-note {
            padding-top: 22px;
            border-top: 1px solid var(--line-soft);
            color: #817e79;
            font-size: 12px;
        }

        .floating-help {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            min-width: 58px;
            min-height: 52px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 0 15px;
            color: var(--cyan);
            border: 1px solid transparent;
            border-radius: 15px;
            background:
                linear-gradient(#111114, #111114) padding-box,
                linear-gradient(135deg, #6ee7b7, #00d9ff, #c084fc) border-box;
            box-shadow: 0 0 17px rgba(0, 240, 255, .32);
            opacity: .72;
            font-size: 12px;
            font-weight: 800;
            transition: opacity .25s ease, transform .25s ease, box-shadow .25s ease;
        }

        .floating-help:hover {
            opacity: 1;
            transform: scale(1.08);
            color: #fff;
            box-shadow: 0 0 30px rgba(0, 240, 255, .58);
        }

        .floating-help:active {
            transform: scale(.95);
        }

        .floating-help .help-icon {
            color: var(--gold-bright);
            font-size: 21px;
            line-height: 1;
        }

        .floating-help .new-dot {
            position: absolute;
            top: -5px;
            right: -5px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #ff4d81;
            box-shadow: 0 0 11px #ff4d81;
            animation: blink 1.3s infinite;
        }

        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: .28; }
        }

        @media (max-width: 1024px) {
            .hero-grid {
                gap: 40px;
            }

            .nav-shell {
                gap: 14px;
            }

            .main-nav a {
                padding-inline: 8px;
            }

            .main-nav a::after {
                left: 8px;
                right: 8px;
            }

            .visual-split,
            .intro-layout {
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            .container {
                width: min(100% - 32px, var(--container));
            }

            .nav-shell {
                min-height: 72px;
                flex-wrap: wrap;
                gap: 0;
                padding: 13px 0 9px;
            }

            .brand {
                flex: 1 1 auto;
                font-size: 18px;
            }

            .nav-actions {
                gap: 3px;
            }

            .login-link {
                padding-inline: 6px;
                font-size: 13px;
            }

            .nav-actions .button {
                min-height: 40px;
                padding-inline: 13px;
                font-size: 12px;
            }

            .main-nav {
                order: 3;
                width: 100%;
                margin-left: 0;
                padding-top: 8px;
                overflow-x: auto;
                scrollbar-width: none;
            }

            .main-nav::-webkit-scrollbar {
                display: none;
            }

            .hero {
                min-height: auto;
                padding: 67px 0 70px;
            }

            .hero-grid,
            .intro-layout,
            .visual-split,
            .formula-layout,
            .calculator-layout,
            .quote-layout {
                grid-template-columns: 1fr;
            }

            .hero-grid {
                gap: 42px;
            }

            h1 {
                font-size: clamp(35px, 9vw, 55px);
            }

            .hero-panel {
                max-width: 560px;
            }

            .section {
                padding: 73px 0;
            }

            .feature-stack {
                grid-template-columns: 1fr;
                gap: 0;
            }

            .feature-item {
                min-height: auto;
                padding: 22px 0;
                border-top: 1px solid var(--line-soft);
            }

            .feature-item:first-child {
                border-top-color: var(--gold);
            }

            .scenario-intro {
                display: block;
            }

            .scenario-tag {
                display: inline-block;
                margin-top: 12px;
            }

            .scenario-list {
                overflow: visible;
                border: 0;
                background: transparent;
            }

            .scenario-row {
                grid-template-columns: 1fr 1fr;
                gap: 9px 18px;
                margin-bottom: 10px;
                padding: 17px;
                border: 1px solid var(--line-soft);
                border-radius: var(--radius-sm);
                background: rgba(255,255,255,.025);
            }

            .scenario-row--head {
                display: none;
            }

            .scenario-row strong,
            .scenario-row span {
                display: block;
            }

            .scenario-row strong::before {
                content: "Tỷ số: ";
                color: var(--muted);
                font-family: Inter, ui-sans-serif, sans-serif;
                font-size: 11px;
                font-weight: 600;
            }

            .image-frame img {
                min-height: 300px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 35px 25px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .container {
                width: min(100% - 26px, var(--container));
            }

            .brand {
                max-width: 154px;
                overflow: hidden;
                font-size: 16px;
                text-overflow: ellipsis;
            }

            .brand-mark {
                width: 31px;
                height: 31px;
                font-size: 12px;
            }

            .nav-actions .login-link {
                font-size: 12px;
            }

            .nav-actions .button {
                min-height: 37px;
                padding-inline: 10px;
                font-size: 11px;
            }

            .hero {
                padding-top: 51px;
            }

            .hero-copy {
                font-size: 16px;
            }

            .hero-actions {
                align-items: stretch;
                flex-direction: column;
            }

            .hero-actions .button {
                width: 100%;
            }

            .countdown-strip {
                width: 100%;
                justify-content: space-between;
                font-size: 11px;
            }

            .hero-panel,
            .calculator-card,
            .formula-box {
                padding: 22px;
            }

            .fraction-number {
                font-size: 62px;
            }

            .section-heading {
                margin-bottom: 32px;
            }

            .form-grid,
            .faq-grid {
                grid-template-columns: 1fr;
            }

            .calculator-copy {
                order: -1;
            }

            blockquote {
                padding-left: 20px;
                font-size: 28px;
            }

            .quote-byline {
                margin-left: 22px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }

            .footer-brand {
                grid-column: auto;
            }

            .floating-help {
                left: 13px;
                bottom: 82px;
                min-width: 50px;
                min-height: 50px;
                padding: 0 12px;
            }

            .floating-help span:not(.help-icon):not(.new-dot) {
                display: none;
            }
        }

/* roulang page: category2 */
:root {
            --bg: #111111;
            --bg-soft: #171719;
            --panel: #1d1d20;
            --panel-light: #242426;
            --gold: #c5a059;
            --gold-bright: #f3c969;
            --champagne: #ead39a;
            --text: #f5f5f7;
            --muted: #aaa7a2;
            --muted-light: #d0cbc2;
            --line: rgba(197, 160, 89, .24);
            --line-soft: rgba(255, 255, 255, .09);
            --danger: #e97867;
            --success: #7ec79a;
            --radius-lg: 28px;
            --radius-md: 18px;
            --radius-sm: 11px;
            --shadow: 0 22px 70px rgba(0, 0, 0, .34);
            --shadow-soft: 0 12px 34px rgba(0, 0, 0, .22);
            --container: 1180px;
        }

        html {
            scroll-behavior: smooth;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            color: var(--text);
            background:
                radial-gradient(circle at 7% 4%, rgba(197, 160, 89, .09), transparent 25rem),
                radial-gradient(circle at 94% 45%, rgba(197, 160, 89, .05), transparent 28rem),
                var(--bg);
            font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.65;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            z-index: -1;
            pointer-events: none;
            opacity: .18;
            background-image:
                linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
            background-size: 42px 42px;
            mask-image: linear-gradient(to bottom, black, transparent 82%);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease, background-color .25s ease, border-color .25s ease, transform .25s ease, box-shadow .25s ease;
        }

        img {
            display: block;
            max-width: 100%;
            height: auto;
        }

        button,
        input,
        select {
            font: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 3px solid rgba(243, 201, 105, .65);
            outline-offset: 3px;
        }

        .container {
            width: min(100% - 40px, var(--container));
            margin-inline: auto;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 40;
            background: rgba(17, 17, 17, .9);
            border-bottom: 1px solid rgba(197, 160, 89, .16);
            backdrop-filter: blur(18px);
        }

        .nav-shell {
            min-height: 78px;
            display: flex;
            align-items: center;
            gap: 26px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            flex: 0 0 auto;
            color: var(--champagne);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: .01em;
            white-space: nowrap;
        }

        .brand:hover {
            color: var(--gold-bright);
        }

        .brand-mark {
            width: 35px;
            height: 35px;
            display: grid;
            place-items: center;
            border: 1px solid var(--gold);
            border-radius: 50%;
            color: var(--gold-bright);
            font-size: 14px;
            box-shadow: inset 0 0 0 4px rgba(197, 160, 89, .08);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 5px;
            margin-left: auto;
        }

        .main-nav a {
            position: relative;
            padding: 10px 13px;
            color: var(--muted);
            font-size: 14px;
            white-space: nowrap;
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 13px;
            right: 13px;
            bottom: 3px;
            height: 1px;
            background: var(--gold-bright);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .25s ease;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text);
        }

        .main-nav a:hover::after,
        .main-nav a.active::after {
            transform: scaleX(1);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 0 0 auto;
        }

        .login-link {
            padding: 10px 9px;
            color: var(--muted-light);
            font-size: 14px;
        }

        .login-link:hover {
            color: var(--gold-bright);
        }

        .button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 46px;
            padding: 0 19px;
            border: 1px solid transparent;
            border-radius: 999px;
            font-weight: 700;
            font-size: 14px;
            line-height: 1;
            cursor: pointer;
            transition: transform .25s ease, box-shadow .25s ease, background-color .25s ease, color .25s ease;
        }

        .button:hover {
            transform: translateY(-2px);
        }

        .button:active {
            transform: translateY(1px);
        }

        .button--gold {
            color: #18130b;
            background: linear-gradient(135deg, var(--gold-bright), var(--gold));
            box-shadow: 0 10px 28px rgba(197, 160, 89, .2);
        }

        .button--gold:hover {
            color: #18130b;
            box-shadow: 0 14px 35px rgba(197, 160, 89, .34);
        }

        .button--outline {
            color: var(--champagne);
            border-color: rgba(197, 160, 89, .58);
            background: rgba(197, 160, 89, .06);
        }

        .button--outline:hover {
            color: var(--text);
            border-color: var(--gold-bright);
            background: rgba(197, 160, 89, .13);
        }

        .button--quiet {
            color: var(--muted-light);
            border-color: var(--line-soft);
            background: rgba(255,255,255,.035);
        }

        .button--quiet:hover {
            color: var(--text);
            border-color: var(--line);
        }

        .hero {
            position: relative;
            min-height: 535px;
            display: flex;
            align-items: center;
            padding: 78px 0 72px;
            background-image:
                linear-gradient(90deg, rgba(10, 10, 10, .96) 0%, rgba(17, 17, 17, .82) 48%, rgba(17, 17, 17, .45) 100%),
                url('/assets/images/backpic/back-2.jpg');
            background-position: center;
            background-size: cover;
            border-bottom: 1px solid rgba(197, 160, 89, .13);
            overflow: hidden;
        }

        .hero::after {
            content: "";
            position: absolute;
            right: -120px;
            bottom: -180px;
            width: 520px;
            height: 520px;
            border: 1px solid rgba(243, 201, 105, .25);
            border-radius: 50%;
            box-shadow: 0 0 0 28px rgba(197,160,89,.04), 0 0 0 58px rgba(197,160,89,.025);
            pointer-events: none;
        }

        .hero-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: minmax(0, 1.05fr) minmax(350px, .95fr);
            align-items: center;
            gap: 72px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 20px;
            color: var(--gold-bright);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .16em;
            text-transform: uppercase;
        }

        .eyebrow::before {
            content: "";
            width: 28px;
            height: 1px;
            background: var(--gold-bright);
        }

        .hero h1 {
            max-width: 720px;
            margin: 0 0 22px;
            color: var(--text);
            font-family: Georgia, "Times New Roman", serif;
            font-size: clamp(2.5rem, 5vw, 4.65rem);
            font-weight: 700;
            letter-spacing: -.045em;
            line-height: 1.04;
        }

        .hero h1 em {
            color: var(--gold-bright);
            font-style: normal;
        }

        .hero-lead {
            max-width: 650px;
            margin: 0 0 30px;
            color: var(--muted-light);
            font-size: 18px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
        }

        .hero-note {
            margin-top: 18px;
            color: var(--muted);
            font-size: 13px;
        }

        .hero-panel {
            position: relative;
            padding: 28px;
            border: 1px solid rgba(243, 201, 105, .38);
            border-radius: var(--radius-lg);
            background: linear-gradient(150deg, rgba(36, 36, 38, .94), rgba(20, 20, 21, .9));
            box-shadow: var(--shadow);
        }

        .burst {
            position: absolute;
            top: -18px;
            right: 26px;
            width: 86px;
            height: 86px;
            display: grid;
            place-items: center;
            padding: 14px;
            color: #231a0a;
            background: var(--gold-bright);
            clip-path: polygon(50% 0%, 61% 13%, 78% 6%, 82% 23%, 99% 27%, 89% 43%, 100% 57%, 83% 64%, 84% 82%, 66% 79%, 56% 98%, 43% 84%, 27% 95%, 22% 77%, 4% 75%, 14% 59%, 2% 45%, 18% 36%, 10% 19%, 29% 20%, 36% 3%);
            font-size: 11px;
            font-weight: 900;
            line-height: 1.1;
            text-align: center;
            text-transform: uppercase;
            transform: rotate(8deg);
        }

        .panel-kicker {
            margin: 0 0 6px;
            color: var(--muted);
            font-size: 13px;
        }

        .panel-title {
            margin: 0 0 24px;
            color: var(--champagne);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 28px;
            line-height: 1.2;
        }

        .ratio-display {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 18px 0 22px;
            border-top: 1px solid var(--line-soft);
            border-bottom: 1px solid var(--line-soft);
        }

        .ratio-number {
            color: var(--gold-bright);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 64px;
            font-weight: 700;
            line-height: 1;
        }

        .ratio-copy strong {
            display: block;
            margin-bottom: 4px;
            color: var(--text);
            font-size: 17px;
        }

        .ratio-copy span {
            color: var(--muted);
            font-size: 13px;
        }

        .panel-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-top: 22px;
        }

        .panel-stat {
            padding: 14px 12px;
            border-radius: var(--radius-sm);
            background: rgba(255,255,255,.045);
        }

        .panel-stat strong {
            display: block;
            color: var(--gold-bright);
            font-size: 19px;
        }

        .panel-stat span {
            display: block;
            color: var(--muted);
            font-size: 12px;
        }

        .section {
            padding: 92px 0;
        }

        .section--soft {
            background: linear-gradient(180deg, rgba(255,255,255,.018), rgba(255,255,255,.035));
            border-top: 1px solid rgba(255,255,255,.04);
            border-bottom: 1px solid rgba(255,255,255,.04);
        }

        .section-heading {
            max-width: 700px;
            margin-bottom: 42px;
        }

        .section-heading--split {
            display: flex;
            align-items: end;
            justify-content: space-between;
            gap: 30px;
            max-width: none;
        }

        .section-label {
            display: block;
            margin-bottom: 12px;
            color: var(--gold);
            font-size: 12px;
            font-weight: 800;
            letter-spacing: .14em;
            text-transform: uppercase;
        }

        .section h2 {
            margin: 0;
            color: var(--text);
            font-family: Georgia, "Times New Roman", serif;
            font-size: clamp(2rem, 3.4vw, 3.15rem);
            letter-spacing: -.035em;
            line-height: 1.12;
        }

        .section-heading p {
            max-width: 680px;
            margin: 16px 0 0;
            color: var(--muted-light);
        }

        .section-heading--split p {
            max-width: 450px;
            margin: 0;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: minmax(280px, .82fr) minmax(0, 1.18fr);
            align-items: stretch;
            gap: 60px;
        }

        .image-frame {
            position: relative;
            min-height: 410px;
            overflow: hidden;
            border-radius: var(--radius-lg);
            background: var(--panel);
            box-shadow: var(--shadow-soft);
        }

        .image-frame img {
            width: 100%;
            height: 100%;
            min-height: 410px;
            object-fit: cover;
            opacity: .82;
        }

        .image-frame::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(12,12,12,.75));
        }

        .image-caption {
            position: absolute;
            z-index: 1;
            right: 24px;
            bottom: 22px;
            left: 24px;
            color: var(--champagne);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 22px;
            line-height: 1.25;
        }

        .intro-copy {
            align-self: center;
        }

        .intro-copy h3 {
            margin: 0 0 18px;
            color: var(--champagne);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 30px;
            line-height: 1.2;
        }

        .intro-copy p {
            margin: 0 0 18px;
            color: var(--muted-light);
        }

        .check-list {
            display: grid;
            gap: 14px;
            margin: 26px 0 0;
            padding: 0;
            list-style: none;
        }

        .check-list li {
            position: relative;
            padding-left: 34px;
            color: var(--muted-light);
        }

        .check-list li::before {
            content: "✓";
            position: absolute;
            top: 1px;
            left: 0;
            width: 22px;
            height: 22px;
            display: grid;
            place-items: center;
            border-radius: 50%;
            color: #17130c;
            background: var(--gold-bright);
            font-size: 12px;
            font-weight: 900;
        }

        .fact-rail {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1px;
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            background: var(--line);
        }

        .fact-item {
            min-height: 142px;
            padding: 24px 22px;
            background: var(--panel);
        }

        .fact-item strong {
            display: block;
            margin-bottom: 6px;
            color: var(--gold-bright);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 32px;
            line-height: 1.1;
        }

        .fact-item span {
            color: var(--muted-light);
            font-size: 14px;
        }

        .scenario-layout {
            display: grid;
            grid-template-columns: minmax(0, .75fr) minmax(0, 1.25fr);
            gap: 58px;
            align-items: start;
        }

        .scenario-aside {
            position: sticky;
            top: 110px;
            padding: 26px;
            border-left: 2px solid var(--gold);
            background: linear-gradient(90deg, rgba(197,160,89,.09), transparent);
        }

        .scenario-aside h3 {
            margin: 0 0 12px;
            color: var(--champagne);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 25px;
        }

        .scenario-aside p {
            margin: 0;
            color: var(--muted-light);
        }

        .scenario-list {
            display: grid;
            gap: 16px;
        }

        .scenario-row {
            display: grid;
            grid-template-columns: 78px minmax(0, 1fr) auto;
            gap: 20px;
            align-items: center;
            padding: 21px 22px;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-md);
            background: rgba(29,29,32,.8);
            transition: transform .25s ease, border-color .25s ease, background-color .25s ease;
        }

        .scenario-row:hover {
            transform: translateX(5px);
            border-color: rgba(243,201,105,.48);
            background: var(--panel-light);
        }

        .scenario-score {
            color: var(--gold-bright);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 29px;
            font-weight: 700;
        }

        .scenario-row h3 {
            margin: 0 0 3px;
            color: var(--text);
            font-size: 17px;
        }

        .scenario-row p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
        }

        .scenario-result {
            min-width: 120px;
            padding: 8px 12px;
            border: 1px solid rgba(126,199,154,.28);
            border-radius: 999px;
            color: var(--success);
            font-size: 12px;
            font-weight: 800;
            text-align: center;
        }

        .scenario-row.is-neutral .scenario-result {
            border-color: rgba(243,201,105,.3);
            color: var(--gold-bright);
        }

        .scenario-row.is-loss .scenario-result {
            border-color: rgba(233,120,103,.3);
            color: var(--danger);
        }

        .formula-section {
            background:
                linear-gradient(120deg, rgba(197,160,89,.11), transparent 45%),
                var(--bg-soft);
        }

        .formula-grid {
            display: grid;
            grid-template-columns: minmax(0, .95fr) minmax(360px, 1.05fr);
            gap: 58px;
            align-items: center;
        }

        .formula-copy h3 {
            margin: 0 0 15px;
            color: var(--champagne);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 30px;
        }

        .formula-copy p {
            margin: 0 0 20px;
            color: var(--muted-light);
        }

        .formula-box {
            margin: 25px 0;
            padding: 21px 24px;
            border: 1px solid rgba(243,201,105,.38);
            border-radius: var(--radius-md);
            color: var(--gold-bright);
            background: rgba(197,160,89,.08);
            font-family: "SFMono-Regular", Consolas, monospace;
            font-size: 16px;
        }

        .formula-points {
            display: grid;
            gap: 12px;
        }

        .formula-point {
            display: flex;
            gap: 13px;
            align-items: flex-start;
            color: var(--muted-light);
        }

        .point-number {
            width: 25px;
            height: 25px;
            flex: 0 0 25px;
            display: grid;
            place-items: center;
            border-radius: 50%;
            color: #16120c;
            background: var(--gold);
            font-size: 12px;
            font-weight: 800;
        }

        .calculator {
            padding: 30px;
            border: 1px solid rgba(197,160,89,.36);
            border-radius: var(--radius-lg);
            background: linear-gradient(145deg, #242426, #18181a);
            box-shadow: var(--shadow-soft);
        }

        .calculator-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 24px;
        }

        .calculator-title h3 {
            margin: 0;
            color: var(--text);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 25px;
        }

        .mini-badge {
            display: inline-flex;
            align-items: center;
            min-height: 27px;
            padding: 0 10px;
            border: 1px solid rgba(243,201,105,.42);
            border-radius: 999px;
            color: var(--gold-bright);
            font-size: 11px;
            font-weight: 800;
            letter-spacing: .05em;
            white-space: nowrap;
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .field {
            margin-bottom: 17px;
        }

        .field label {
            display: block;
            margin-bottom: 7px;
            color: var(--muted-light);
            font-size: 13px;
            font-weight: 700;
        }

        .field input,
        .field select {
            width: 100%;
            height: 47px;
            margin: 0;
            padding: 0 14px;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-sm);
            color: var(--text);
            background: rgba(255,255,255,.055);
            box-shadow: none;
        }

        .field input:focus,
        .field select:focus {
            border-color: var(--gold-bright);
            background: rgba(255,255,255,.08);
            box-shadow: 0 0 0 3px rgba(243,201,105,.1);
        }

        .field select option {
            color: #111;
        }

        .calculator .button {
            width: 100%;
            margin-top: 3px;
        }

        .calc-result {
            min-height: 100px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            margin-top: 23px;
            padding: 18px 20px;
            border-radius: var(--radius-md);
            background: rgba(126,199,154,.08);
            border: 1px solid rgba(126,199,154,.22);
        }

        .calc-result span {
            color: var(--muted-light);
            font-size: 13px;
        }

        .calc-result strong {
            color: var(--success);
            font-size: 25px;
            text-align: right;
        }

        .calc-note {
            margin: 14px 0 0;
            color: var(--muted);
            font-size: 12px;
        }

        .quote-section {
            padding-top: 78px;
            padding-bottom: 78px;
        }

        .quote-layout {
            display: grid;
            grid-template-columns: minmax(0, 1.1fr) minmax(260px, .9fr);
            gap: 60px;
            align-items: center;
        }

        .quote-mark {
            margin-bottom: 13px;
            color: var(--gold-bright);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 74px;
            line-height: .65;
        }

        blockquote {
            margin: 0;
            color: var(--text);
            font-family: Georgia, "Times New Roman", serif;
            font-size: clamp(1.55rem, 2.5vw, 2.35rem);
            line-height: 1.25;
        }

        .quote-caption {
            margin-top: 18px;
            color: var(--muted);
            font-size: 13px;
        }

        .quote-side {
            padding: 25px;
            border-radius: var(--radius-md);
            background: var(--panel);
            border: 1px solid var(--line-soft);
        }

        .quote-side strong {
            display: block;
            margin-bottom: 8px;
            color: var(--gold-bright);
            font-size: 18px;
        }

        .quote-side p {
            margin: 0;
            color: var(--muted-light);
            font-size: 14px;
            line-height: 1.7;
        }

        .quote-side ul {
            display: grid;
            gap: 10px;
            margin: 17px 0 0;
            padding: 0;
            list-style: none;
        }

        .quote-side li {
            position: relative;
            padding-left: 22px;
            color: var(--muted-light);
            font-size: 14px;
        }

        .quote-side li::before {
            content: "";
            position: absolute;
            top: .7em;
            left: 0;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--gold-bright);
            box-shadow: 0 0 0 4px rgba(243,201,105,.1);
        }

        .faq-layout {
            display: grid;
            grid-template-columns: minmax(240px, .7fr) minmax(0, 1.3fr);
            gap: 68px;
            align-items: start;
        }

        .faq-intro {
            position: sticky;
            top: 110px;
        }

        .faq-intro p {
            margin: 17px 0 0;
            color: var(--muted-light);
        }

        .faq-list {
            display: grid;
            gap: 12px;
        }

        .faq-item {
            overflow: hidden;
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-md);
            background: rgba(29,29,32,.78);
        }

        .faq-item summary {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 20px 23px;
            color: var(--text);
            font-size: 16px;
            font-weight: 750;
            cursor: pointer;
            list-style: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "+";
            color: var(--gold-bright);
            font-size: 24px;
            font-weight: 400;
            line-height: 1;
            transition: transform .25s ease;
        }

        .faq-item[open] summary {
            color: var(--champagne);
            border-bottom: 1px solid var(--line-soft);
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 17px 23px 21px;
            color: var(--muted-light);
            font-size: 14px;
        }

        .faq-answer p {
            margin: 0;
        }

        .cta-section {
            padding: 82px 0;
        }

        .cta-panel {
            position: relative;
            overflow: hidden;
            display: grid;
            grid-template-columns: minmax(0, 1fr) auto;
            gap: 32px;
            align-items: center;
            padding: 45px 50px;
            border: 1px solid rgba(243,201,105,.42);
            border-radius: var(--radius-lg);
            background:
                linear-gradient(105deg, rgba(197,160,89,.18), rgba(197,160,89,.04) 52%, rgba(255,255,255,.035)),
                var(--panel);
            box-shadow: var(--shadow-soft);
        }

        .cta-panel::before {
            content: "1¾";
            position: absolute;
            right: 26%;
            bottom: -54px;
            color: rgba(243,201,105,.06);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 190px;
            font-weight: 700;
            line-height: 1;
            pointer-events: none;
        }

        .cta-panel > * {
            position: relative;
            z-index: 1;
        }

        .cta-panel h2 {
            max-width: 650px;
            margin: 0;
            color: var(--text);
            font-family: Georgia, "Times New Roman", serif;
            font-size: clamp(2rem, 3.4vw, 3rem);
            line-height: 1.12;
        }

        .cta-panel p {
            max-width: 650px;
            margin: 14px 0 0;
            color: var(--muted-light);
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: flex-end;
            gap: 10px;
        }

        .site-footer {
            padding: 60px 0 24px;
            border-top: 1px solid rgba(197,160,89,.2);
            background: #0c0c0d;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.45fr .8fr .9fr;
            gap: 58px;
            padding-bottom: 42px;
        }

        .footer-brand .brand {
            margin-bottom: 17px;
        }

        .footer-brand p {
            max-width: 390px;
            margin: 0 0 19px;
            color: var(--muted);
            font-size: 14px;
        }

        .responsible-badge {
            display: inline-flex;
            align-items: center;
            min-height: 31px;
            padding: 0 11px;
            border: 1px solid rgba(197,160,89,.28);
            border-radius: 999px;
            color: var(--champagne);
            font-size: 11px;
            font-weight: 700;
        }

        .footer-title {
            margin: 3px 0 15px;
            color: var(--champagne);
            font-family: Georgia, "Times New Roman", serif;
            font-size: 18px;
        }

        .footer-links {
            display: grid;
            gap: 10px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .footer-links a {
            color: var(--muted);
            font-size: 14px;
        }

        .footer-links a:hover {
            color: var(--gold-bright);
            padding-left: 3px;
        }

        .footer-note {
            padding-top: 21px;
            border-top: 1px solid var(--line-soft);
            color: #77736f;
            font-size: 12px;
        }

        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            min-width: 118px;
            min-height: 52px;
            display: inline-flex;
            align-items: center;
            gap: 9px;
            padding: 0 15px 0 10px;
            border: 1px solid transparent;
            border-radius: 999px;
            color: var(--text);
            background:
                linear-gradient(rgba(12,12,13,.94), rgba(12,12,13,.94)) padding-box,
                linear-gradient(115deg, var(--gold-bright), #00d8d8, var(--gold)) border-box;
            box-shadow: 0 0 18px rgba(0, 240, 255, .24), 0 10px 30px rgba(0,0,0,.35);
            opacity: .78;
            transition: opacity .25s ease, transform .25s ease, box-shadow .25s ease;
        }

        .fab:hover {
            opacity: 1;
            color: var(--text);
            transform: translateY(-3px) scale(1.04);
            box-shadow: 0 0 28px rgba(0, 240, 255, .42), 0 14px 34px rgba(0,0,0,.42);
        }

        .fab:active {
            transform: translateY(1px) scale(.97);
        }

        .fab-icon {
            width: 31px;
            height: 31px;
            display: grid;
            place-items: center;
            border-radius: 50%;
            color: #111;
            background: var(--gold-bright);
            font-size: 17px;
            font-weight: 900;
        }

        .fab-text {
            font-size: 12px;
            font-weight: 800;
        }

        .fab-badge {
            position: absolute;
            top: -8px;
            right: 5px;
            padding: 2px 6px;
            border-radius: 999px;
            color: #fff;
            background: var(--danger);
            font-size: 8px;
            font-weight: 900;
            letter-spacing: .05em;
            animation: blink 1.8s infinite;
        }

        @keyframes blink {
            0%, 48%, 100% { opacity: 1; }
            52%, 84% { opacity: .35; }
        }

        @media (max-width: 1024px) {
            .nav-shell {
                gap: 14px;
            }

            .main-nav a {
                padding-inline: 8px;
                font-size: 13px;
            }

            .main-nav a::after {
                left: 8px;
                right: 8px;
            }

            .hero-grid,
            .formula-grid {
                gap: 38px;
            }

            .hero h1 {
                font-size: clamp(2.4rem, 5vw, 3.8rem);
            }

            .scenario-layout,
            .faq-layout {
                gap: 38px;
            }
        }

        @media (max-width: 768px) {
            .container {
                width: min(100% - 30px, var(--container));
            }

            .nav-shell {
                min-height: 70px;
                flex-wrap: wrap;
                padding: 11px 0;
                gap: 8px 14px;
            }

            .brand {
                font-size: 17px;
            }

            .brand-mark {
                width: 32px;
                height: 32px;
            }

            .main-nav {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                margin-left: 0;
                padding-bottom: 2px;
                scrollbar-width: none;
            }

            .main-nav::-webkit-scrollbar {
                display: none;
            }

            .main-nav a {
                padding: 6px 9px 8px;
                font-size: 12px;
            }

            .main-nav a::after {
                left: 9px;
                right: 9px;
                bottom: 1px;
            }

            .nav-actions {
                margin-left: auto;
            }

            .login-link {
                padding-inline: 5px;
                font-size: 12px;
            }

            .nav-actions .button {
                min-height: 39px;
                padding-inline: 13px;
                font-size: 12px;
            }

            .hero {
                min-height: auto;
                padding: 66px 0 58px;
                background-position: 62% center;
            }

            .hero-grid,
            .intro-grid,
            .scenario-layout,
            .formula-grid,
            .quote-layout,
            .faq-layout {
                grid-template-columns: 1fr;
            }

            .hero-grid {
                gap: 42px;
            }

            .hero h1 {
                max-width: 620px;
                font-size: clamp(2.45rem, 10vw, 4rem);
            }

            .hero-lead {
                font-size: 16px;
            }

            .hero-panel {
                max-width: 560px;
            }

            .section {
                padding: 68px 0;
            }

            .section-heading--split {
                display: block;
            }

            .section-heading--split p {
                margin-top: 15px;
            }

            .intro-grid {
                gap: 32px;
            }

            .image-frame,
            .image-frame img {
                min-height: 330px;
            }

            .fact-rail {
                grid-template-columns: repeat(2, 1fr);
            }

            .scenario-aside,
            .faq-intro {
                position: static;
            }

            .formula-grid {
                gap: 34px;
            }

            .quote-layout {
                gap: 30px;
            }

            .cta-panel {
                grid-template-columns: 1fr;
                padding: 35px 28px;
            }

            .cta-actions {
                justify-content: flex-start;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 34px 26px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .container {
                width: min(100% - 24px, var(--container));
            }

            .nav-shell {
                gap: 8px;
            }

            .brand {
                max-width: 190px;
                overflow: hidden;
                font-size: 15px;
                text-overflow: ellipsis;
            }

            .nav-actions {
                gap: 2px;
            }

            .nav-actions .button {
                padding-inline: 10px;
            }

            .hero {
                padding-top: 52px;
            }

            .eyebrow {
                margin-bottom: 14px;
                font-size: 10px;
                letter-spacing: .11em;
            }

            .hero h1 {
                font-size: 2.45rem;
                letter-spacing: -.035em;
            }

            .hero-actions {
                align-items: stretch;
                flex-direction: column;
            }

            .hero-actions .button {
                width: 100%;
            }

            .hero-panel {
                padding: 22px 18px;
            }

            .burst {
                top: -14px;
                right: 12px;
                width: 72px;
                height: 72px;
                font-size: 9px;
            }

            .panel-title {
                max-width: 220px;
                font-size: 23px;
            }

            .ratio-number {
                font-size: 50px;
            }

            .panel-stats {
                gap: 6px;
            }

            .panel-stat {
                padding: 11px 8px;
            }

            .panel-stat strong {
                font-size: 16px;
            }

            .panel-stat span {
                font-size: 10px;
            }

            .section {
                padding: 56px 0;
            }

            .section h2 {
                font-size: 2rem;
            }

            .intro-copy h3,
            .formula-copy h3 {
                font-size: 25px;
            }

            .fact-item {
                min-height: 124px;
                padding: 19px 15px;
            }

            .fact-item strong {
                font-size: 27px;
            }

            .scenario-row {
                grid-template-columns: 55px minmax(0, 1fr);
                gap: 12px;
                padding: 17px 15px;
            }

            .scenario-score {
                font-size: 24px;
            }

            .scenario-result {
                grid-column: 2;
                justify-self: start;
                min-width: 0;
                padding: 6px 10px;
            }

            .calculator {
                padding: 22px 17px;
            }

            .calculator-title {
                align-items: flex-start;
                flex-direction: column;
                gap: 10px;
            }

            .form-grid {
                grid-template-columns: 1fr;
                gap: 0;
            }

            .calc-result {
                align-items: flex-start;
                flex-direction: column;
                gap: 7px;
            }

            .calc-result strong {
                text-align: left;
            }

            .quote-mark {
                font-size: 60px;
            }

            blockquote {
                font-size: 1.65rem;
            }

            .cta-panel {
                padding: 29px 20px;
            }

            .cta-actions {
                align-items: stretch;
                flex-direction: column;
            }

            .cta-actions .button {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }

            .footer-brand {
                grid-column: auto;
            }

            .fab {
                left: 12px;
                bottom: 20px;
            }
        }