/* roulang page: index */
:root {
            --ink: #08101f;
            --deep: #0b1a30;
            --violet: #0f0c20;
            --panel: #111c31;
            --panel-2: #15243d;
            --cyan: #00f0ff;
            --lime: #ccff00;
            --blue: #4d7cff;
            --pink: #ff3cad;
            --white: #ffffff;
            --muted: #a6acaf;
            --soft: #d7e4ed;
            --line: rgba(0, 240, 255, .18);
            --line-light: rgba(255, 255, 255, .1);
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 24px 70px rgba(0, 0, 0, .3);
            --glow: 0 0 26px rgba(0, 240, 255, .2);
            --container: 1180px;
        }

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

        html {
            scroll-behavior: smooth;
            background: var(--violet);
        }

        body {
            margin: 0;
            color: var(--white);
            background:
                radial-gradient(circle at 10% 0%, rgba(0, 240, 255, .08), transparent 28rem),
                radial-gradient(circle at 88% 20%, rgba(204, 255, 0, .06), transparent 25rem),
                var(--violet);
            font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.62;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            opacity: .25;
            background-image:
                linear-gradient(rgba(0, 240, 255, .035) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 240, 255, .035) 1px, transparent 1px);
            background-size: 42px 42px;
            mask-image: linear-gradient(to bottom, black, transparent 78%);
            z-index: -1;
        }

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

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

        button, input { font: inherit; }
        button { cursor: pointer; }

        :focus-visible {
            outline: 3px solid var(--lime);
            outline-offset: 4px;
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(9, 13, 29, .86);
            border-bottom: 1px solid rgba(0, 240, 255, .14);
            backdrop-filter: blur(18px);
        }

        .nav-shell {
            min-height: 76px;
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            min-width: 250px;
            font-size: 15px;
            font-weight: 800;
            letter-spacing: -.02em;
            line-height: 1.18;
        }

        .brand-mark {
            width: 42px;
            height: 42px;
            display: grid;
            place-items: center;
            flex: 0 0 42px;
            color: var(--ink);
            background: linear-gradient(135deg, var(--lime), var(--cyan));
            border-radius: 13px 5px 13px 5px;
            box-shadow: 0 0 22px rgba(0, 240, 255, .35);
            transform: rotate(-5deg);
        }

        .brand span:last-child { max-width: 210px; }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 7px;
            flex: 1;
        }

        .main-nav a {
            position: relative;
            padding: 10px 13px;
            color: var(--muted);
            border-radius: 10px;
            font-size: 14px;
            font-weight: 700;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--white);
            background: rgba(0, 240, 255, .08);
        }

        .main-nav a.active::after {
            content: "";
            position: absolute;
            left: 13px;
            right: 13px;
            bottom: 3px;
            height: 2px;
            background: var(--cyan);
            box-shadow: 0 0 10px var(--cyan);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            white-space: nowrap;
        }

        .login-link {
            color: var(--soft);
            font-size: 14px;
            font-weight: 700;
        }

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

        .button-neon,
        .button-ghost,
        .button-lime {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            min-height: 47px;
            padding: 12px 19px;
            border: 1px solid transparent;
            border-radius: 11px;
            font-size: 14px;
            font-weight: 800;
            line-height: 1.2;
            transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
        }

        .button-neon {
            color: var(--ink);
            background: var(--cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, .27);
        }

        .button-neon:hover {
            color: var(--ink);
            background: #8cffff;
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(0, 240, 255, .48);
        }

        .button-ghost {
            color: var(--cyan);
            border-color: rgba(0, 240, 255, .42);
            background: rgba(0, 240, 255, .06);
        }

        .button-ghost:hover {
            color: var(--white);
            background: rgba(0, 240, 255, .14);
            border-color: var(--cyan);
            transform: translateY(-2px);
        }

        .button-lime {
            color: #101700;
            background: var(--lime);
            box-shadow: 0 0 22px rgba(204, 255, 0, .22);
        }

        .button-lime:hover {
            color: #101700;
            background: #e4ff73;
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(204, 255, 0, .4);
        }

        .menu-toggle {
            display: none;
            color: var(--white);
            border: 1px solid var(--line);
            background: rgba(0, 240, 255, .06);
            border-radius: 10px;
            width: 43px;
            height: 43px;
        }

        .hero {
            position: relative;
            min-height: 650px;
            display: flex;
            align-items: center;
            padding: 78px 0 86px;
            isolation: isolate;
            overflow: hidden;
            background:
                linear-gradient(90deg, rgba(8, 10, 28, .94) 0%, rgba(8, 10, 28, .78) 48%, rgba(8, 10, 28, .38) 100%),
                url("/assets/images/backpic/back-1.jpg") center / cover no-repeat;
        }

        .hero::after {
            content: "";
            position: absolute;
            right: -10%;
            bottom: -40%;
            width: 58vw;
            height: 58vw;
            border: 1px solid rgba(0, 240, 255, .15);
            border-radius: 50%;
            box-shadow: 0 0 0 25px rgba(0, 240, 255, .025), 0 0 0 50px rgba(0, 240, 255, .02);
            z-index: -1;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: minmax(0, 1.07fr) minmax(370px, .93fr);
            align-items: center;
            gap: clamp(40px, 7vw, 95px);
        }

        .eyebrow,
        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--lime);
            font-size: 12px;
            font-weight: 900;
            letter-spacing: .13em;
            text-transform: uppercase;
        }

        .eyebrow::before,
        .section-kicker::before {
            content: "";
            width: 28px;
            height: 2px;
            background: currentColor;
            box-shadow: 0 0 10px currentColor;
        }

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

        h1 {
            max-width: 730px;
            margin: 20px 0 23px;
            color: var(--white);
            font-size: clamp(2.45rem, 5vw, 5.1rem);
            font-weight: 900;
            letter-spacing: -.065em;
            line-height: 1.02;
        }

        .hero-copy {
            max-width: 650px;
            color: var(--soft);
            font-size: clamp(1rem, 1.7vw, 1.15rem);
            line-height: 1.7;
        }

        .hero-copy strong { color: var(--cyan); }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 13px;
            margin: 32px 0 28px;
        }

        .hero-points {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            color: var(--muted);
            font-size: 13px;
        }

        .hero-points span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .hero-points i { color: var(--lime); }

        .status-board {
            position: relative;
            padding: 24px;
            background: rgba(12, 25, 47, .88);
            border: 1px solid rgba(0, 240, 255, .3);
            border-radius: 24px 8px 24px 8px;
            box-shadow: var(--shadow), var(--glow);
            overflow: hidden;
        }

        .status-board::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(130deg, rgba(0, 240, 255, .1), transparent 32%, rgba(204, 255, 0, .05));
            pointer-events: none;
        }

        .board-head,
        .board-row,
        .board-total {
            position: relative;
            z-index: 1;
        }

        .board-head {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 18px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--line-light);
        }

        .board-head h2 {
            margin: 0 0 4px;
            font-size: 20px;
            letter-spacing: -.03em;
        }

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

        .live-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--lime);
            font-size: 11px;
            font-weight: 900;
            letter-spacing: .08em;
        }

        .live-badge::before {
            content: "";
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--lime);
            box-shadow: 0 0 12px var(--lime);
            animation: pulse-dot 1.6s infinite;
        }

        .board-row {
            display: grid;
            grid-template-columns: 34px 1fr auto;
            align-items: center;
            gap: 13px;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, .07);
        }

        .rank {
            color: var(--cyan);
            font-size: 13px;
            font-weight: 900;
        }

        .fish-symbol {
            width: 38px;
            height: 38px;
            display: grid;
            place-items: center;
            color: var(--ink);
            background: linear-gradient(135deg, var(--cyan), #5675ff);
            border-radius: 50%;
            font-size: 17px;
        }

        .row-name {
            display: block;
            color: var(--white);
            font-size: 14px;
            font-weight: 800;
        }

        .row-note {
            display: block;
            color: var(--muted);
            font-size: 12px;
        }

        .row-value {
            color: var(--lime);
            font-size: 15px;
            font-weight: 900;
        }

        .board-total {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 19px;
            color: var(--muted);
            font-size: 13px;
        }

        .board-total strong {
            color: var(--cyan);
            font-size: 22px;
        }

        .section {
            padding: 100px 0;
        }

        .section-alt {
            background: rgba(10, 25, 47, .52);
            border-top: 1px solid rgba(0, 240, 255, .08);
            border-bottom: 1px solid rgba(0, 240, 255, .08);
        }

        .section-heading {
            display: flex;
            justify-content: space-between;
            align-items: end;
            gap: 30px;
            margin-bottom: 40px;
        }

        .section-heading h2 {
            max-width: 700px;
            margin: 13px 0 0;
            color: var(--white);
            font-size: clamp(1.85rem, 3vw, 3.1rem);
            font-weight: 850;
            letter-spacing: -.05em;
            line-height: 1.1;
        }

        .section-heading p {
            max-width: 560px;
            margin: 0;
            color: var(--muted);
            line-height: 1.7;
        }

        .feature-strip {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .feature-card {
            min-height: 225px;
            padding: 27px;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: linear-gradient(145deg, rgba(20, 42, 70, .9), rgba(12, 23, 44, .88));
            transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease;
        }

        .feature-card:hover {
            transform: translateY(-7px);
            border-color: var(--cyan);
            box-shadow: 0 14px 38px rgba(0, 240, 255, .12);
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            display: grid;
            place-items: center;
            margin-bottom: 22px;
            color: var(--ink);
            background: var(--lime);
            border-radius: 13px 5px 13px 5px;
            font-size: 19px;
            box-shadow: 0 0 20px rgba(204, 255, 0, .2);
        }

        .feature-card:nth-child(2) .feature-icon {
            color: var(--white);
            background: var(--blue);
            box-shadow: 0 0 20px rgba(77, 124, 255, .28);
        }

        .feature-card:nth-child(3) .feature-icon {
            color: var(--ink);
            background: var(--cyan);
        }

        .feature-card h3 {
            margin-bottom: 9px;
            font-size: 20px;
            letter-spacing: -.03em;
        }

        .feature-card p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.65;
        }

        .quick-layout {
            display: grid;
            grid-template-columns: .72fr 1.28fr;
            gap: 70px;
            align-items: start;
        }

        .quick-intro h2 {
            margin: 14px 0 17px;
            font-size: clamp(1.9rem, 3.3vw, 3.4rem);
            letter-spacing: -.06em;
            line-height: 1.08;
        }

        .quick-intro p {
            color: var(--muted);
            line-height: 1.75;
        }

        .quick-list {
            border-top: 1px solid var(--line-light);
        }

        .quick-item {
            display: grid;
            grid-template-columns: 48px 1fr 20px;
            gap: 18px;
            align-items: start;
            padding: 22px 0;
            border-bottom: 1px solid var(--line-light);
        }

        .quick-number {
            color: var(--cyan);
            font-size: 14px;
            font-weight: 900;
        }

        .quick-item h3 {
            margin-bottom: 6px;
            font-size: 17px;
        }

        .quick-item p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.65;
        }

        .quick-item i {
            padding-top: 5px;
            color: var(--lime);
            transition: transform .25s ease;
        }

        .quick-item:hover i { transform: translateX(4px); }

        .info-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 25px;
            align-items: stretch;
        }

        .info-image {
            min-height: 430px;
            position: relative;
            overflow: hidden;
            border-radius: 24px 8px 24px 8px;
            background: var(--panel);
        }

        .info-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: .82;
            transition: transform .6s ease;
        }

        .info-image:hover img { transform: scale(1.05); }

        .image-caption {
            position: absolute;
            right: 18px;
            bottom: 18px;
            left: 18px;
            padding: 18px;
            border: 1px solid rgba(0, 240, 255, .3);
            border-radius: 14px;
            background: rgba(8, 12, 29, .82);
            backdrop-filter: blur(12px);
        }

        .image-caption strong {
            display: block;
            margin-bottom: 4px;
            color: var(--cyan);
            font-size: 15px;
        }

        .image-caption span {
            color: var(--soft);
            font-size: 13px;
        }

        .info-copy {
            padding: 16px 5px 16px 30px;
        }

        .info-copy h2 {
            margin: 14px 0 16px;
            font-size: clamp(1.8rem, 3vw, 2.8rem);
            letter-spacing: -.05em;
            line-height: 1.12;
        }

        .info-copy > p {
            color: var(--muted);
            line-height: 1.75;
        }

        .check-list {
            display: grid;
            gap: 14px;
            margin: 27px 0 30px;
            padding: 0;
            list-style: none;
        }

        .check-list li {
            display: flex;
            gap: 12px;
            color: var(--soft);
            font-size: 14px;
        }

        .check-list i {
            flex: 0 0 19px;
            color: var(--lime);
            padding-top: 4px;
        }

        .guide-panel {
            padding: 32px;
            background:
                linear-gradient(120deg, rgba(0, 240, 255, .07), transparent 45%),
                var(--panel);
            border: 1px solid rgba(0, 240, 255, .16);
            border-radius: var(--radius);
        }

        .steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0;
            margin-top: 30px;
        }

        .step {
            position: relative;
            padding: 0 26px 0 0;
        }

        .step:not(:last-child)::after {
            content: "";
            position: absolute;
            top: 20px;
            right: 25px;
            width: calc(100% - 70px);
            height: 1px;
            background: linear-gradient(90deg, var(--cyan), transparent);
            transform: translateX(100%);
        }

        .step-number {
            width: 42px;
            height: 42px;
            display: grid;
            place-items: center;
            margin-bottom: 18px;
            color: var(--ink);
            background: var(--cyan);
            border-radius: 50%;
            font-weight: 900;
            box-shadow: 0 0 18px rgba(0, 240, 255, .3);
        }

        .step h3 {
            margin-bottom: 8px;
            font-size: 17px;
        }

        .step p {
            margin: 0;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.65;
        }

        .updates-layout {
            display: grid;
            grid-template-columns: 1.35fr .65fr;
            gap: 28px;
        }

        .updates-list {
            border-top: 1px solid var(--line-light);
        }

        .update-item {
            display: grid;
            grid-template-columns: 100px 1fr 20px;
            gap: 20px;
            align-items: center;
            padding: 20px 0;
            border-bottom: 1px solid var(--line-light);
        }

        .update-date {
            color: var(--cyan);
            font-size: 12px;
            font-weight: 800;
            line-height: 1.4;
        }

        .update-date small {
            display: block;
            margin-top: 3px;
            color: var(--muted);
            font-weight: 500;
        }

        .update-item h3 {
            margin: 0 0 4px;
            font-size: 16px;
            line-height: 1.35;
        }

        .update-item h3 a:hover { color: var(--cyan); }

        .update-item p {
            margin: 0;
            color: var(--muted);
            font-size: 13px;
            line-height: 1.5;
        }

        .update-arrow { color: var(--lime); }

        .recommendation {
            position: relative;
            min-height: 100%;
            padding: 28px;
            overflow: hidden;
            border-radius: 20px;
            background:
                linear-gradient(180deg, rgba(11, 14, 34, .25), rgba(11, 14, 34, .95)),
                url("/assets/images/coverpic/cover-4.jpg") center / cover no-repeat;
            border: 1px solid rgba(204, 255, 0, .25);
        }

        .recommendation .badge {
            display: inline-block;
            padding: 6px 10px;
            color: var(--ink);
            background: var(--lime);
            border-radius: 7px;
            font-size: 11px;
            font-weight: 900;
        }

        .recommendation-content {
            position: absolute;
            right: 28px;
            bottom: 28px;
            left: 28px;
        }

        .recommendation h3 {
            margin: 42px 0 9px;
            font-size: 23px;
            line-height: 1.15;
        }

        .recommendation p {
            margin-bottom: 18px;
            color: var(--soft);
            font-size: 14px;
        }

        .security-grid {
            display: grid;
            grid-template-columns: .8fr 1.2fr;
            gap: 65px;
            align-items: center;
        }

        .security-copy h2 {
            margin: 14px 0 16px;
            font-size: clamp(1.9rem, 3.2vw, 3rem);
            letter-spacing: -.055em;
            line-height: 1.1;
        }

        .security-copy p {
            color: var(--muted);
            line-height: 1.75;
        }

        .security-items {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }

        .security-item {
            padding: 22px;
            border: 1px solid var(--line-light);
            border-radius: 15px;
            background: rgba(255, 255, 255, .035);
        }

        .security-item i {
            margin-bottom: 15px;
            color: var(--cyan);
            font-size: 21px;
        }

        .security-item h3 {
            margin-bottom: 6px;
            font-size: 16px;
        }

        .security-item p {
            margin: 0;
            color: var(--muted);
            font-size: 13px;
            line-height: 1.6;
        }

        .app-section {
            position: relative;
            overflow: hidden;
            background:
                linear-gradient(90deg, rgba(12, 24, 50, .96), rgba(12, 24, 50, .68)),
                url("/assets/images/backpic/back-2.jpg") center / cover no-repeat;
        }

        .app-grid {
            display: grid;
            grid-template-columns: 1fr .75fr;
            gap: 60px;
            align-items: center;
        }

        .app-copy h2 {
            margin: 14px 0 15px;
            font-size: clamp(1.9rem, 3.4vw, 3.5rem);
            letter-spacing: -.06em;
            line-height: 1.08;
        }

        .app-copy p {
            max-width: 650px;
            color: var(--soft);
            line-height: 1.75;
        }

        .download-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 22px;
        }

        .meta-chip {
            padding: 8px 12px;
            color: var(--soft);
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: 30px;
            background: rgba(0, 0, 0, .22);
            font-size: 12px;
        }

        .download-box {
            padding: 28px;
            border: 1px solid rgba(204, 255, 0, .28);
            border-radius: 20px 7px 20px 7px;
            background: rgba(7, 16, 32, .76);
        }

        .download-box h3 {
            margin-bottom: 8px;
            font-size: 20px;
        }

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

        .download-box .button-lime { width: 100%; }

        .entrance-section { padding-bottom: 70px; }

        .entrance-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 14px;
        }

        .entrance {
            display: flex;
            align-items: center;
            gap: 13px;
            min-height: 82px;
            padding: 18px;
            border: 1px solid var(--line-light);
            border-radius: 14px;
            background: rgba(255, 255, 255, .035);
        }

        .entrance:hover {
            border-color: var(--cyan);
            background: rgba(0, 240, 255, .08);
            transform: translateY(-3px);
        }

        .entrance-icon {
            width: 38px;
            height: 38px;
            display: grid;
            place-items: center;
            flex: 0 0 38px;
            color: var(--cyan);
            border: 1px solid rgba(0, 240, 255, .3);
            border-radius: 10px;
        }

        .entrance strong {
            display: block;
            font-size: 14px;
            line-height: 1.3;
        }

        .entrance small {
            display: block;
            margin-top: 3px;
            color: var(--muted);
            font-size: 11px;
        }

        .faq-section { padding-top: 70px; }

        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px 42px;
        }

        details {
            padding: 19px 0;
            border-bottom: 1px solid var(--line-light);
        }

        summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            color: var(--white);
            cursor: pointer;
            list-style: none;
            font-size: 16px;
            font-weight: 800;
        }

        summary::-webkit-details-marker { display: none; }

        summary::after {
            content: "+";
            color: var(--cyan);
            font-size: 23px;
            font-weight: 400;
        }

        details[open] summary::after { content: "−"; color: var(--lime); }

        details p {
            max-width: 570px;
            margin: 13px 35px 0 0;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
        }

        .final-cta {
            padding: 85px 0;
            text-align: center;
            background:
                radial-gradient(circle at 50% 0%, rgba(0, 240, 255, .16), transparent 32rem),
                #0b172b;
            border-top: 1px solid var(--line);
        }

        .final-cta h2 {
            max-width: 780px;
            margin: 14px auto 15px;
            font-size: clamp(2rem, 4vw, 3.65rem);
            letter-spacing: -.06em;
            line-height: 1.08;
        }

        .final-cta p {
            max-width: 650px;
            margin: 0 auto 28px;
            color: var(--muted);
            line-height: 1.7;
        }

        .final-cta .hero-actions { justify-content: center; }

        .site-footer {
            padding: 58px 0 28px;
            background: #070d19;
            border-top: 1px solid rgba(0, 240, 255, .1);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.35fr .8fr .8fr 1fr;
            gap: 40px;
            padding-bottom: 45px;
        }

        .footer-brand {
            max-width: 330px;
            color: var(--muted);
            font-size: 14px;
        }

        .footer-brand .brand {
            margin-bottom: 17px;
            color: var(--white);
        }

        .footer-title {
            margin: 4px 0 15px;
            color: var(--white);
            font-size: 13px;
            font-weight: 900;
            letter-spacing: .08em;
            text-transform: uppercase;
        }

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

        .footer-links a {
            color: var(--muted);
            font-size: 13px;
        }

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

        .trust-line {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 20px;
        }

        .trust-line span {
            padding: 6px 9px;
            color: var(--soft);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 6px;
            font-size: 11px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding-top: 23px;
            border-top: 1px solid rgba(255, 255, 255, .09);
            color: #748294;
            font-size: 12px;
        }

        .footer-bottom span:last-child { text-align: right; }

        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            display: grid;
            place-items: center;
            color: var(--cyan);
            border: 1px solid var(--cyan);
            border-radius: 16px;
            background: rgba(3, 10, 24, .8);
            box-shadow: 0 0 15px rgba(0, 240, 255, .5);
            opacity: .72;
            backdrop-filter: blur(12px);
            transition: opacity .25s ease, transform .25s ease, box-shadow .25s ease;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 32px rgba(0, 240, 255, .8);
        }

        .fab i { font-size: 21px; }
        .fab em {
            position: absolute;
            top: -7px;
            right: -7px;
            width: 17px;
            height: 17px;
            display: grid;
            place-items: center;
            color: var(--ink);
            background: var(--lime);
            border-radius: 50%;
            font-size: 9px;
            font-style: normal;
            font-weight: 900;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: .45; transform: scale(.72); }
        }

        @media (max-width: 1024px) {
            .site-container { width: min(calc(100% - 32px), 920px); }
            .nav-shell { gap: 16px; }
            .brand { min-width: 220px; }
            .main-nav a { padding-inline: 8px; font-size: 13px; }
            .hero-grid { gap: 38px; }
            .quick-layout, .security-grid { gap: 38px; }
            .entrance-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; }
            .footer-brand { grid-column: 1 / -1; max-width: 600px; }
        }

        @media (max-width: 768px) {
            .site-container { width: min(calc(100% - 28px), 680px); }
            .nav-shell { min-height: 68px; }
            .brand { min-width: 0; flex: 1; }
            .brand-mark { width: 37px; height: 37px; flex-basis: 37px; }
            .brand span:last-child { max-width: 170px; font-size: 13px; }
            .main-nav {
                position: absolute;
                top: calc(100% + 1px);
                right: 14px;
                left: 14px;
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 12px;
                background: rgba(9, 13, 29, .98);
                border: 1px solid var(--line);
                border-radius: 0 0 16px 16px;
                box-shadow: var(--shadow);
            }
            .main-nav.is-open { display: flex; }
            .main-nav a { padding: 12px 14px; }
            .main-nav a.active::after { left: 14px; right: auto; width: 30px; }
            .menu-toggle { display: block; }
            .nav-actions { gap: 10px; }
            .login-link { font-size: 13px; }
            .nav-actions .button-neon { min-height: 39px; padding: 9px 12px; font-size: 12px; }
            .hero { min-height: auto; padding: 64px 0 70px; }
            .hero-grid, .quick-layout, .info-layout, .updates-layout, .security-grid, .app-grid {
                grid-template-columns: 1fr;
            }
            .hero-grid { gap: 43px; }
            h1 { font-size: clamp(2.35rem, 10vw, 4rem); }
            .status-board { max-width: 590px; }
            .section { padding: 72px 0; }
            .section-heading { display: block; margin-bottom: 28px; }
            .section-heading p { margin-top: 16px; }
            .feature-strip { grid-template-columns: 1fr; }
            .feature-card { min-height: auto; }
            .info-copy { padding: 10px 0; }
            .info-image { min-height: 330px; }
            .steps { grid-template-columns: 1fr; gap: 28px; }
            .step { padding: 0; }
            .step:not(:last-child)::after { top: auto; right: auto; bottom: -17px; left: 20px; width: 1px; height: 14px; transform: none; background: linear-gradient(180deg, var(--cyan), transparent); }
            .updates-layout { gap: 24px; }
            .recommendation { min-height: 340px; }
            .security-items { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
            .footer-brand { grid-column: 1 / -1; }
        }

        @media (max-width: 520px) {
            .site-container { width: min(calc(100% - 24px), 480px); }
            .brand span:last-child { max-width: 135px; font-size: 12px; }
            .nav-actions { gap: 8px; }
            .login-link { display: none; }
            .nav-actions .button-neon { padding-inline: 10px; }
            .hero { padding-top: 50px; }
            .hero-actions { align-items: stretch; flex-direction: column; }
            .hero-actions a { width: 100%; }
            .hero-points { display: grid; gap: 9px; }
            .status-board { padding: 19px 16px; }
            .board-row { grid-template-columns: 25px 1fr auto; gap: 8px; }
            .fish-symbol { width: 32px; height: 32px; font-size: 14px; }
            .row-value { font-size: 13px; }
            .section { padding: 58px 0; }
            .guide-panel { padding: 23px 18px; }
            .security-items, .entrance-grid, .faq-grid { grid-template-columns: 1fr; }
            .update-item { grid-template-columns: 73px 1fr 13px; gap: 10px; }
            .update-item p { display: none; }
            .recommendation-content { right: 20px; bottom: 20px; left: 20px; }
            .recommendation h3 { margin-top: 30px; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-brand { grid-column: auto; }
            .footer-bottom { display: block; }
            .footer-bottom span:last-child { margin-top: 8px; text-align: left; }
            .fab { left: 12px; bottom: 78px; }
        }

/* roulang page: category1 */
:root {
            --ink:#08101f;
            --deep:#0b1a30;
            --violet:#0f0c20;
            --panel:#111c31;
            --panel-2:#15243d;
            --cyan:#00f0ff;
            --lime:#ccff00;
            --blue:#4d7cff;
            --pink:#ff3cad;
            --white:#fff;
            --muted:#a6acaf;
            --soft:#d7e4ed;
            --line:rgba(0,240,255,.18);
            --line-light:rgba(255,255,255,.1);
            --radius:20px;
            --radius-sm:12px;
            --shadow:0 24px 70px rgba(0,0,0,.3);
            --glow:0 0 26px rgba(0,240,255,.2);
            --container:1180px;
        }
        *{box-sizing:border-box}
        html{scroll-behavior:smooth;background:var(--violet)}
        body{
            margin:0;
            color:var(--white);
            background:
                radial-gradient(circle at 10% 0%,rgba(0,240,255,.08),transparent 28rem),
                radial-gradient(circle at 88% 20%,rgba(204,255,0,.06),transparent 25rem),
                var(--violet);
            font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
            font-size:16px;
            line-height:1.62;
            overflow-x:hidden
        }
        body::before{
            content:"";
            position:fixed;
            inset:0;
            pointer-events:none;
            opacity:.25;
            background-image:linear-gradient(rgba(0,240,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(0,240,255,.035) 1px,transparent 1px);
            background-size:42px 42px;
            mask-image:linear-gradient(to bottom,#000,transparent 78%);
            z-index:-1
        }
        a{color:inherit;text-decoration:none;transition:color .25s ease,border-color .25s ease,background .25s ease,transform .25s ease,box-shadow .25s ease}
        img{display:block;max-width:100%;height:auto}
        button,input{font:inherit}
        button{cursor:pointer}
        :focus-visible{outline:3px solid var(--lime);outline-offset:3px}
        .site-container{width:min(calc(100% - 40px),var(--container));margin-inline:auto}
        .site-header{
            position:sticky;
            top:0;
            z-index:100;
            background:rgba(9,13,29,.88);
            border-bottom:1px solid rgba(0,240,255,.14);
            backdrop-filter:blur(18px)
        }
        .nav-shell{min-height:76px;display:flex;align-items:center;gap:24px}
        .brand{display:inline-flex;align-items:center;gap:12px;min-width:250px;font-size:15px;font-weight:800;letter-spacing:-.02em;line-height:1.18}
        .brand-mark{
            width:42px;height:42px;display:grid;place-items:center;flex:0 0 42px;color:var(--ink);
            background:linear-gradient(135deg,var(--lime),var(--cyan));
            border-radius:13px 5px 13px 5px;box-shadow:0 0 22px rgba(0,240,255,.35);transform:rotate(-5deg)
        }
        .brand span:last-child{max-width:210px}
        .main-nav{display:flex;align-items:center;justify-content:flex-end;gap:7px;flex:1}
        .main-nav a{position:relative;padding:10px 13px;color:var(--muted);border-radius:10px;font-size:14px;font-weight:700}
        .main-nav a:hover,.main-nav a.active{color:var(--white);background:rgba(0,240,255,.08)}
        .main-nav a.active::after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
        .nav-actions{display:flex;align-items:center;gap:10px;white-space:nowrap}
        .button-neon,.button-ghost,.button-lime{
            display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:47px;padding:12px 19px;
            border:1px solid transparent;border-radius:11px;font-size:14px;font-weight:800;line-height:1.2;
            transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease
        }
        .button-neon{color:var(--ink);background:var(--cyan);box-shadow:0 0 20px rgba(0,240,255,.27)}
        .button-neon:hover{color:var(--ink);background:#8cffff;transform:translateY(-2px);box-shadow:0 0 30px rgba(0,240,255,.48)}
        .button-ghost{color:var(--cyan);border-color:rgba(0,240,255,.42);background:rgba(0,240,255,.06)}
        .button-ghost:hover{color:var(--white);background:rgba(0,240,255,.14);border-color:var(--cyan);transform:translateY(-2px)}
        .button-lime{color:#101700;background:var(--lime);box-shadow:0 0 22px rgba(204,255,0,.22)}
        .button-lime:hover{color:#101700;background:#e4ff73;transform:translateY(-2px);box-shadow:0 0 32px rgba(204,255,0,.4)}
        .menu-toggle{display:none;color:var(--white);border:1px solid var(--line);background:rgba(0,240,255,.06);border-radius:10px;width:43px;height:43px}
        .page-banner{
            position:relative;
            min-height:470px;
            display:flex;
            align-items:center;
            padding:80px 0;
            background-image:linear-gradient(90deg,rgba(15,12,32,.98) 0%,rgba(15,12,32,.88) 46%,rgba(11,26,48,.7) 100%),url('/assets/images/backpic/back-2.jpg');
            background-size:cover;
            background-position:center;
            border-bottom:1px solid var(--line)
        }
        .page-banner::after{content:"";position:absolute;inset:auto 0 0;height:2px;background:linear-gradient(90deg,transparent,var(--cyan),var(--lime),transparent);opacity:.8}
        .banner-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(330px,.95fr);gap:70px;align-items:center}
        .eyebrow,.section-kicker{
            display:inline-flex;align-items:center;gap:9px;color:var(--lime);font-size:12px;font-weight:900;
            letter-spacing:.12em;text-transform:uppercase
        }
        .eyebrow::before,.section-kicker::before{content:"";width:28px;height:2px;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
        h1,h2,h3,p{margin-top:0}
        h1{max-width:780px;margin:18px 0 20px;font-size:clamp(2.35rem,5vw,4.6rem);line-height:1.04;letter-spacing:-.055em}
        h2{margin:12px 0 15px;font-size:clamp(1.8rem,3vw,2.7rem);line-height:1.12;letter-spacing:-.035em}
        h3{margin:0 0 9px;font-size:1.17rem;line-height:1.3}
        .banner-copy{max-width:650px;color:var(--soft);font-size:18px;line-height:1.7}
        .banner-actions{display:flex;flex-wrap:wrap;gap:13px;margin-top:30px}
        .label-chip{
            display:inline-flex;align-items:center;gap:7px;padding:7px 11px;border:1px solid rgba(204,255,0,.3);
            border-radius:99px;background:rgba(204,255,0,.08);color:var(--lime);font-size:12px;font-weight:800
        }
        .score-panel{
            padding:24px;border:1px solid rgba(0,240,255,.28);border-radius:var(--radius);
            background:linear-gradient(145deg,rgba(17,28,49,.94),rgba(11,26,48,.78));box-shadow:var(--shadow),var(--glow)
        }
        .panel-heading{display:flex;justify-content:space-between;align-items:center;gap:15px;padding-bottom:17px;border-bottom:1px solid var(--line-light)}
        .panel-heading strong{font-size:15px}
        .live-state{display:inline-flex;align-items:center;gap:7px;color:var(--lime);font-size:12px;font-weight:800}
        .live-state i{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 12px var(--lime);animation:pulse 1.5s infinite}
        .rank-list{margin:5px 0 0;padding:0;list-style:none}
        .rank-item{display:grid;grid-template-columns:35px 1fr auto;gap:12px;align-items:center;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.07)}
        .rank-item:last-child{border-bottom:0;padding-bottom:3px}
        .rank-no{color:var(--cyan);font-weight:900}
        .rank-name{font-size:14px;font-weight:750}
        .rank-note{display:block;color:var(--muted);font-size:12px}
        .rank-value{color:var(--lime);font-size:14px;font-weight:900}
        .section{padding:92px 0}
        .section-tight{padding:65px 0}
        .section-head{max-width:700px;margin-bottom:38px}
        .section-head p{color:var(--muted);max-width:650px;margin-bottom:0}
        .split-intro{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;align-items:start}
        .lead-copy{color:var(--soft);font-size:18px;line-height:1.75}
        .accent-line{width:72px;height:3px;margin:20px 0;background:linear-gradient(90deg,var(--cyan),var(--lime));box-shadow:0 0 14px rgba(0,240,255,.4)}
        .feature-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
        .feature-item{padding:22px 0 22px 20px;border-left:2px solid rgba(0,240,255,.3)}
        .feature-item:hover{border-left-color:var(--lime);transform:translateX(4px)}
        .icon-box{width:42px;height:42px;display:grid;place-items:center;margin-bottom:17px;color:var(--cyan);border:1px solid var(--line);border-radius:12px;background:rgba(0,240,255,.08);box-shadow:0 0 18px rgba(0,240,255,.1)}
        .feature-item p,.step p,.note-box p{margin-bottom:0;color:var(--muted);font-size:14px}
        .dark-band{background:rgba(8,16,31,.48);border-top:1px solid rgba(0,240,255,.1);border-bottom:1px solid rgba(0,240,255,.1)}
        .media-story{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:58px;align-items:center}
        .media-frame{position:relative;overflow:hidden;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow)}
        .media-frame img{width:100%;aspect-ratio:1.25/1;object-fit:cover;filter:saturate(1.08)}
        .media-frame::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,240,255,.13),transparent 45%,rgba(204,255,0,.12))}
        .story-points{display:grid;gap:21px;margin-top:28px}
        .story-point{display:flex;gap:15px;align-items:flex-start}
        .story-point i{color:var(--lime);margin-top:5px}
        .story-point strong{display:block;margin-bottom:4px}
        .story-point span{display:block;color:var(--muted);font-size:14px}
        .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
        .step{position:relative;padding:25px 20px 22px;border-top:2px solid var(--cyan);background:rgba(17,28,49,.68)}
        .step-number{display:block;margin-bottom:22px;color:var(--lime);font-size:2rem;font-weight:900;line-height:1}
        .step::after{content:"";position:absolute;top:-2px;right:0;width:28px;height:2px;background:var(--lime)}
        .step h3{font-size:1.05rem}
        .check-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:stretch}
        .check-list{display:grid;gap:12px;margin:24px 0 0;padding:0;list-style:none}
        .check-list li{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border:1px solid rgba(255,255,255,.08);background:rgba(21,36,61,.4);border-radius:var(--radius-sm);color:var(--soft)}
        .check-list i{color:var(--lime);margin-top:4px}
        .note-box{padding:29px;border:1px solid rgba(204,255,0,.25);border-radius:var(--radius);background:linear-gradient(145deg,rgba(204,255,0,.09),rgba(0,240,255,.05))}
        .note-box h3{color:var(--lime)}
        .note-box .button-ghost{margin-top:22px}
        .faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:70px}
        .faq-layout .section-head{margin-bottom:0}
        .faq-list{margin:0}
        .faq-list details{border-bottom:1px solid var(--line-light)}
        .faq-list details:first-child{border-top:1px solid var(--line-light)}
        .faq-list summary{position:relative;padding:20px 40px 20px 0;list-style:none;cursor:pointer;font-weight:800}
        .faq-list summary::-webkit-details-marker{display:none}
        .faq-list summary::after{content:"+";position:absolute;right:4px;color:var(--cyan);font-size:23px;font-weight:400}
        .faq-list details[open] summary::after{content:"−";color:var(--lime)}
        .faq-list details p{padding:0 35px 20px 0;margin:0;color:var(--muted);font-size:15px}
        .cta-band{padding:68px 0;background:linear-gradient(110deg,rgba(0,240,255,.13),rgba(204,255,0,.09) 55%,rgba(255,60,173,.1));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:35px}
        .cta-inner h2{margin-bottom:8px}
        .cta-inner p{max-width:650px;margin-bottom:0;color:var(--soft)}
        .site-footer{padding:62px 0 24px;background:rgba(5,9,20,.74);border-top:1px solid rgba(0,240,255,.12)}
        .footer-grid{display:grid;grid-template-columns:1.35fr .8fr .85fr 1fr;gap:38px}
        .footer-brand .brand{min-width:0;margin-bottom:17px}
        .footer-brand p{max-width:330px;color:var(--muted);font-size:14px}
        .trust-line{display:flex;gap:9px;flex-wrap:wrap}
        .trust-line span{padding:6px 9px;border:1px solid rgba(204,255,0,.24);border-radius:7px;color:var(--lime);font-size:11px;font-weight:800}
        .footer-title{margin:5px 0 16px;color:var(--white);font-size:14px;letter-spacing:.02em}
        .footer-links{margin:0;padding:0;list-style:none}
        .footer-links li{margin:0 0 10px;color:var(--muted);font-size:13px}
        .footer-links a:hover{color:var(--cyan)}
        .footer-links i{width:18px;color:var(--cyan)}
        .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);color:#75818d;font-size:12px}
        .fab{
            position:fixed;left:16px;bottom:96px;z-index:50;width:54px;height:54px;display:grid;place-items:center;
            color:var(--cyan);border:1px solid var(--cyan);border-radius:50%;background:rgba(0,0,0,.72);
            box-shadow:0 0 18px rgba(0,240,255,.5);opacity:.72;transition:.25s ease;animation:float 3s ease-in-out infinite
        }
        .fab:hover{opacity:1;transform:scale(1.1);box-shadow:0 0 32px rgba(0,240,255,.8)}
        .fab::after{content:"";position:absolute;top:1px;right:1px;width:9px;height:9px;border-radius:50%;background:var(--pink);box-shadow:0 0 10px var(--pink);animation:pulse 1.5s infinite}
        .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
        @keyframes pulse{0%,100%{opacity:.45;transform:scale(.85)}50%{opacity:1;transform:scale(1.15)}}
        @keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
        @media(max-width:1024px){
            .nav-shell{gap:13px}.brand{min-width:220px}.main-nav a{padding-inline:9px;font-size:13px}.nav-actions{gap:6px}
            .nav-actions .button-ghost,.nav-actions .button-lime{padding-inline:12px}
            .banner-grid,.split-intro,.media-story,.check-grid,.faq-layout{gap:38px}
            .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
            .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
        }
        @media(max-width:768px){
            .site-container{width:min(calc(100% - 30px),var(--container))}
            .nav-shell{min-height:68px;flex-wrap:wrap;padding:10px 0}
            .brand{min-width:0;flex:1}.brand span:last-child{max-width:180px}
            .menu-toggle{display:block;order:3}
            .main-nav{display:none;order:4;width:100%;flex-basis:100%;padding:8px 0 4px;align-items:stretch;flex-direction:column}
            .main-nav.is-open{display:flex}
            .main-nav a{padding:12px 13px}
            .main-nav a.active::after{left:13px;right:auto;width:34px;bottom:5px}
            .nav-actions{order:2}
            .nav-actions .button-ghost,.nav-actions .button-lime{min-height:39px;padding:8px 11px;font-size:12px}
            .page-banner{min-height:auto;padding:62px 0 64px}
            .banner-grid,.split-intro,.media-story,.check-grid,.faq-layout{grid-template-columns:1fr}
            .score-panel{max-width:650px}
            .section{padding:68px 0}.section-tight{padding:50px 0}
            .split-intro{gap:28px}.feature-list{gap:16px}
            .cta-inner{align-items:flex-start;flex-direction:column}
        }
        @media(max-width:520px){
            body{font-size:15px}.site-container{width:min(calc(100% - 24px),var(--container))}
            .brand{font-size:13px;gap:8px}.brand-mark{width:36px;height:36px;flex-basis:36px}
            .brand span:last-child{max-width:130px}
            .nav-actions{gap:4px}.nav-actions .button-ghost,.nav-actions .button-lime{padding-inline:8px}
            .menu-toggle{width:39px;height:39px}
            h1{font-size:2.25rem}.banner-copy{font-size:16px}.banner-actions{align-items:stretch;flex-direction:column}
            .banner-actions a{width:100%}.feature-list,.steps{grid-template-columns:1fr}
            .media-frame img{aspect-ratio:1.25/1}.footer-grid{grid-template-columns:1fr;gap:27px}
            .footer-bottom{flex-direction:column;gap:7px}.fab{left:14px;bottom:78px}
        }

/* roulang page: article */
:root {
            --ink: #08101f;
            --deep: #0b1a30;
            --violet: #0f0c20;
            --panel: #111c31;
            --panel-2: #15243d;
            --cyan: #00f0ff;
            --lime: #ccff00;
            --blue: #4d7cff;
            --pink: #ff3cad;
            --white: #ffffff;
            --muted: #a6acaf;
            --soft: #d7e4ed;
            --line: rgba(0, 240, 255, .18);
            --line-light: rgba(255, 255, 255, .1);
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 24px 70px rgba(0, 0, 0, .3);
            --glow: 0 0 26px rgba(0, 240, 255, .2);
            --container: 1180px;
        }

        * { box-sizing: border-box; }

        html {
            scroll-behavior: smooth;
            background: var(--violet);
        }

        body {
            margin: 0;
            color: var(--white);
            background:
                radial-gradient(circle at 10% 0%, rgba(0, 240, 255, .08), transparent 28rem),
                radial-gradient(circle at 88% 20%, rgba(204, 255, 0, .06), transparent 25rem),
                var(--violet);
            font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.62;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            opacity: .25;
            background-image:
                linear-gradient(rgba(0, 240, 255, .035) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 240, 255, .035) 1px, transparent 1px);
            background-size: 42px 42px;
            mask-image: linear-gradient(to bottom, black, transparent 78%);
            z-index: -1;
        }

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

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

        button, input { font: inherit; }
        button { cursor: pointer; }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(9, 13, 29, .86);
            border-bottom: 1px solid rgba(0, 240, 255, .14);
            backdrop-filter: blur(18px);
        }

        .nav-shell {
            min-height: 76px;
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            min-width: 250px;
            font-size: 15px;
            font-weight: 800;
            letter-spacing: -.02em;
            line-height: 1.18;
        }

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

        .brand-mark {
            width: 42px;
            height: 42px;
            display: grid;
            place-items: center;
            flex: 0 0 42px;
            color: var(--ink);
            background: linear-gradient(135deg, var(--lime), var(--cyan));
            border-radius: 13px 5px 13px 5px;
            box-shadow: 0 0 22px rgba(0, 240, 255, .35);
            transform: rotate(-5deg);
        }

        .brand span:last-child { max-width: 210px; }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 7px;
            flex: 1;
        }

        .main-nav a {
            position: relative;
            padding: 10px 13px;
            color: var(--muted);
            border-radius: 10px;
            font-size: 14px;
            font-weight: 700;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--white);
            background: rgba(0, 240, 255, .08);
        }

        .main-nav a.active::after {
            content: "";
            position: absolute;
            left: 13px;
            right: 13px;
            bottom: 3px;
            height: 2px;
            background: var(--cyan);
            box-shadow: 0 0 10px var(--cyan);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            white-space: nowrap;
        }

        .button-neon,
        .button-ghost,
        .button-lime {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            min-height: 47px;
            padding: 12px 19px;
            border: 1px solid transparent;
            border-radius: 11px;
            font-size: 14px;
            font-weight: 800;
            line-height: 1.2;
            transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
        }

        .button-neon {
            color: var(--ink);
            background: var(--cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, .27);
        }

        .button-neon:hover {
            color: var(--ink);
            background: #8cffff;
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(0, 240, 255, .48);
        }

        .button-ghost {
            color: var(--cyan);
            border-color: rgba(0, 240, 255, .42);
            background: rgba(0, 240, 255, .06);
        }

        .button-ghost:hover {
            color: var(--white);
            background: rgba(0, 240, 255, .14);
            border-color: var(--cyan);
            transform: translateY(-2px);
        }

        .button-lime {
            color: #101700;
            background: var(--lime);
            box-shadow: 0 0 22px rgba(204, 255, 0, .22);
        }

        .button-lime:hover {
            color: #101700;
            background: #e4ff73;
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(204, 255, 0, .4);
        }

        .menu-toggle {
            display: none;
            color: var(--white);
            border: 1px solid var(--line);
            background: rgba(0, 240, 255, .06);
            border-radius: 10px;
            width: 43px;
            height: 43px;
        }

        :focus-visible {
            outline: 3px solid var(--lime);
            outline-offset: 3px;
        }

        .article-banner {
            position: relative;
            min-height: 390px;
            display: flex;
            align-items: flex-end;
            padding: 90px 0 58px;
            isolation: isolate;
            overflow: hidden;
            background:
                linear-gradient(90deg, rgba(15, 12, 32, .98) 4%, rgba(15, 12, 32, .78) 56%, rgba(15, 12, 32, .45)),
                url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
        }

        .article-banner::after {
            content: "";
            position: absolute;
            inset: auto 0 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--cyan), var(--lime), transparent);
            box-shadow: 0 0 20px var(--cyan);
        }

        .banner-content { max-width: 900px; }

        .eyebrow,
        .article-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--lime);
            font-size: 12px;
            font-weight: 900;
            letter-spacing: .12em;
            text-transform: uppercase;
        }

        .eyebrow::before {
            content: "";
            width: 26px;
            height: 2px;
            background: var(--cyan);
            box-shadow: 0 0 9px var(--cyan);
        }

        .article-banner h1 {
            max-width: 900px;
            margin: 18px 0 18px;
            color: var(--white);
            font-size: clamp(2.2rem, 5vw, 4.3rem);
            line-height: 1.08;
            letter-spacing: -.055em;
            text-wrap: balance;
        }

        .banner-summary {
            max-width: 760px;
            margin: 0;
            color: var(--soft);
            font-size: 18px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 22px;
            margin-top: 24px;
            color: var(--muted);
            font-size: 13px;
        }

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

        .article-meta i { color: var(--cyan); }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 720px) minmax(260px, 340px);
            align-items: start;
            gap: 54px;
            padding: 78px 0 92px;
        }

        .article-main {
            min-width: 0;
        }

        .article-cover {
            position: relative;
            margin-bottom: 34px;
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            background: var(--panel);
        }

        .article-cover img {
            width: 100%;
            aspect-ratio: 16 / 8;
            object-fit: cover;
        }

        .article-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 240, 255, .12), transparent 45%, rgba(204, 255, 0, .08));
            pointer-events: none;
        }

        .article-content {
            color: var(--soft);
            font-size: 17px;
        }

        .article-content > *:first-child { margin-top: 0; }

        .article-content h2,
        .article-content h3 {
            color: var(--white);
            letter-spacing: -.025em;
            line-height: 1.2;
            margin: 42px 0 16px;
        }

        .article-content h2 {
            padding-left: 16px;
            border-left: 3px solid var(--cyan);
            font-size: 29px;
        }

        .article-content h3 {
            color: var(--cyan);
            font-size: 22px;
        }

        .article-content p { margin: 0 0 20px; }

        .article-content a {
            color: var(--cyan);
            text-decoration: underline;
            text-decoration-color: rgba(0, 240, 255, .4);
            text-underline-offset: 3px;
        }

        .article-content a:hover { color: var(--lime); }

        .article-content ul,
        .article-content ol {
            margin: 18px 0 25px 20px;
            padding-left: 20px;
        }

        .article-content li {
            margin: 10px 0;
            padding-left: 5px;
        }

        .article-content li::marker { color: var(--lime); }

        .article-content blockquote {
            margin: 30px 0;
            padding: 22px 24px;
            color: var(--white);
            border-left: 3px solid var(--lime);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            background: linear-gradient(90deg, rgba(204, 255, 0, .1), rgba(0, 240, 255, .04));
        }

        .article-content img {
            margin: 28px 0;
            border-radius: var(--radius-sm);
            border: 1px solid var(--line);
        }

        .article-content table {
            width: 100%;
            margin: 25px 0;
            color: var(--soft);
            border-collapse: collapse;
            background: rgba(17, 28, 49, .66);
        }

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

        .article-content th {
            color: var(--lime);
            background: rgba(0, 240, 255, .08);
        }

        .not-found {
            padding: 44px 30px;
            text-align: center;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: rgba(17, 28, 49, .8);
        }

        .not-found i {
            display: block;
            margin-bottom: 16px;
            color: var(--cyan);
            font-size: 42px;
        }

        .not-found h2 {
            margin: 0 0 12px;
            color: var(--white);
        }

        .not-found p {
            margin: 0 0 24px;
            color: var(--muted);
        }

        .article-share {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 42px;
            padding-top: 22px;
            border-top: 1px solid var(--line-light);
        }

        .share-label {
            margin-right: 4px;
            color: var(--muted);
            font-size: 13px;
            font-weight: 800;
        }

        .share-link {
            width: 39px;
            height: 39px;
            display: grid;
            place-items: center;
            color: var(--cyan);
            border: 1px solid var(--line);
            border-radius: 10px;
            background: rgba(0, 240, 255, .05);
        }

        .share-link:hover {
            color: var(--ink);
            background: var(--cyan);
            transform: translateY(-2px);
        }

        .side-column {
            position: sticky;
            top: 104px;
            display: grid;
            gap: 20px;
        }

        .side-panel {
            padding: 25px;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: linear-gradient(145deg, rgba(21, 36, 61, .94), rgba(17, 28, 49, .78));
            box-shadow: 0 18px 45px rgba(0, 0, 0, .18);
        }

        .side-panel h2 {
            margin: 0 0 15px;
            color: var(--white);
            font-size: 19px;
            line-height: 1.25;
        }

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

        .side-panel.accent {
            border-color: rgba(204, 255, 0, .32);
            background:
                radial-gradient(circle at 100% 0, rgba(204, 255, 0, .14), transparent 12rem),
                var(--panel);
        }

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

        .side-list li + li { border-top: 1px solid var(--line-light); }

        .side-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 0;
            color: var(--soft);
            font-size: 14px;
            font-weight: 700;
            line-height: 1.4;
        }

        .side-list a:hover { color: var(--cyan); }

        .side-list i {
            flex: 0 0 20px;
            margin-top: 3px;
            color: var(--lime);
        }

        .step-list {
            display: grid;
            gap: 13px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .step-list li {
            display: grid;
            grid-template-columns: 30px 1fr;
            gap: 10px;
            align-items: start;
            color: var(--soft);
            font-size: 14px;
        }

        .step-number {
            width: 28px;
            height: 28px;
            display: grid;
            place-items: center;
            color: var(--ink);
            background: var(--cyan);
            border-radius: 50%;
            font-size: 12px;
            font-weight: 900;
        }

        .info-strip {
            padding: 26px 0;
            border-top: 1px solid var(--line-light);
            border-bottom: 1px solid var(--line-light);
            background: rgba(11, 26, 48, .55);
        }

        .info-strip-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
        }

        .info-strip strong {
            display: block;
            margin-bottom: 4px;
            color: var(--white);
            font-size: 18px;
        }

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

        .info-points {
            display: flex;
            flex-wrap: wrap;
            justify-content: flex-end;
            gap: 10px;
        }

        .info-point {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 12px;
            color: var(--soft);
            border: 1px solid var(--line-light);
            border-radius: 9px;
            background: rgba(255, 255, 255, .035);
            font-size: 13px;
            font-weight: 700;
        }

        .info-point i { color: var(--lime); }

        .faq-section {
            padding: 78px 0 88px;
            background:
                linear-gradient(90deg, rgba(0, 240, 255, .04), transparent 40%, rgba(204, 255, 0, .035)),
                rgba(8, 16, 31, .58);
        }

        .section-heading {
            max-width: 650px;
            margin-bottom: 28px;
        }

        .section-heading h2 {
            margin: 10px 0 12px;
            color: var(--white);
            font-size: clamp(1.8rem, 3vw, 2.7rem);
            letter-spacing: -.04em;
            line-height: 1.12;
        }

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

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

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

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            gap: 15px;
            padding: 20px 0;
            color: var(--white);
            border: 0;
            background: transparent;
            text-align: left;
            font-weight: 800;
        }

        .faq-question i {
            color: var(--cyan);
            transition: transform .25s ease;
        }

        .faq-answer {
            display: none;
            padding: 0 30px 20px 0;
            color: var(--muted);
            font-size: 15px;
        }

        .faq-item.open .faq-answer { display: block; }
        .faq-item.open .faq-question i { transform: rotate(45deg); }

        .cta-section {
            position: relative;
            padding: 78px 0;
            overflow: hidden;
            text-align: center;
            background:
                linear-gradient(120deg, rgba(0, 240, 255, .14), rgba(204, 255, 0, .08)),
                url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(15, 12, 32, .72);
        }

        .cta-inner {
            position: relative;
            max-width: 740px;
            margin: auto;
        }

        .cta-inner h2 {
            margin: 10px 0 13px;
            color: var(--white);
            font-size: clamp(1.9rem, 4vw, 3.1rem);
            letter-spacing: -.045em;
            line-height: 1.12;
        }

        .cta-inner p {
            margin: 0 auto 26px;
            color: var(--soft);
        }

        .site-footer {
            padding: 62px 0 24px;
            border-top: 1px solid var(--line);
            background: #090d1d;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 35px;
        }

        .footer-brand .brand { min-width: 0; }
        .footer-brand p {
            max-width: 350px;
            margin: 20px 0;
            color: var(--muted);
            font-size: 14px;
        }

        .trust-line {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 9px;
        }

        .trust-line span {
            padding: 5px 9px;
            color: var(--lime);
            border: 1px solid rgba(204, 255, 0, .28);
            border-radius: 6px;
            font-size: 11px;
            font-weight: 800;
        }

        .footer-title {
            margin: 5px 0 16px;
            color: var(--white);
            font-size: 14px;
            letter-spacing: .04em;
        }

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

        .footer-links li {
            margin-bottom: 10px;
            color: var(--muted);
            font-size: 13px;
        }

        .footer-links a:hover { color: var(--cyan); }
        .footer-links i { width: 18px; color: var(--cyan); }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 48px;
            padding-top: 20px;
            border-top: 1px solid var(--line-light);
            color: #77828d;
            font-size: 12px;
        }

        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 58px;
            height: 58px;
            display: grid;
            place-items: center;
            color: var(--cyan);
            border: 1px solid var(--cyan);
            border-radius: 16px;
            background: rgba(0, 0, 0, .68);
            box-shadow: 0 0 15px rgba(0, 240, 255, .5);
            opacity: .72;
            backdrop-filter: blur(12px);
            animation: breathe 3.2s ease-in-out infinite;
        }

        .fab-support::before {
            content: "";
            position: absolute;
            inset: -2px;
            border-radius: inherit;
            border: 1px solid rgba(204, 255, 0, .6);
            clip-path: polygon(0 0, 100% 0, 100% 32%, 0 68%);
            pointer-events: none;
        }

        .fab-support:hover {
            color: var(--lime);
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, .8);
        }

        .fab-support:hover i { transform: rotate(360deg); }
        .fab-support i { transition: transform .55s ease; font-size: 21px; }

        .fab-dot {
            position: absolute;
            top: 5px;
            right: 5px;
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--pink);
            box-shadow: 0 0 10px var(--pink);
            animation: blink 1.5s infinite;
        }

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

        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: .35; }
        }

        @media (max-width: 1100px) {
            .nav-shell { gap: 16px; }
            .brand { min-width: 220px; }
            .brand span:last-child { max-width: 175px; }
            .main-nav a { padding-inline: 9px; font-size: 13px; }
            .article-layout { grid-template-columns: minmax(0, 1fr) 285px; gap: 34px; }
        }

        @media (max-width: 900px) {
            .nav-shell { flex-wrap: wrap; padding: 14px 0; }
            .menu-toggle {
                display: block;
                margin-left: auto;
            }
            .main-nav {
                display: none;
                order: 4;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 10px 0 4px;
                border-top: 1px solid var(--line-light);
            }
            .main-nav.is-open { display: flex; }
            .main-nav a { padding: 13px 12px; }
            .main-nav a.active::after { left: 12px; right: auto; width: 30px; bottom: 7px; }
            .nav-actions { margin-left: 0; }
            .article-layout { grid-template-columns: 1fr; }
            .side-column {
                position: static;
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }
            .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
            .info-strip-inner { align-items: flex-start; flex-direction: column; }
            .info-points { justify-content: flex-start; }
        }

        @media (max-width: 640px) {
            .site-container { width: min(calc(100% - 28px), var(--container)); }
            .brand { min-width: 0; flex: 1; font-size: 13px; }
            .brand-mark { width: 38px; height: 38px; flex-basis: 38px; }
            .brand span:last-child { max-width: 155px; }
            .nav-actions { gap: 6px; }
            .nav-actions .button-ghost,
            .nav-actions .button-lime {
                min-height: 40px;
                padding: 9px 10px;
                font-size: 12px;
            }
            .article-banner { min-height: 420px; padding: 65px 0 42px; }
            .article-banner h1 { font-size: 2.25rem; }
            .banner-summary { font-size: 16px; }
            .article-layout { padding: 50px 0 64px; }
            .article-content { font-size: 16px; }
            .article-content h2 { font-size: 25px; }
            .side-column,
            .faq-grid,
            .footer-grid { grid-template-columns: 1fr; }
            .faq-section { padding: 58px 0 65px; }
            .cta-section { padding: 62px 0; }
            .footer-bottom { flex-direction: column; gap: 8px; }
            .fab-support { left: 14px; bottom: 78px; }
        }

        @media (max-width: 420px) {
            .brand span:last-child { max-width: 125px; }
            .nav-actions .button-ghost { padding-inline: 8px; }
            .nav-actions .button-lime { padding-inline: 9px; }
            .article-meta { display: grid; gap: 8px; }
        }

/* roulang page: category2 */
:root {
            --ink: #08101f;
            --deep: #0b1a30;
            --violet: #0f0c20;
            --panel: #111c31;
            --panel-2: #15243d;
            --cyan: #00f0ff;
            --lime: #ccff00;
            --blue: #4d7cff;
            --pink: #ff3cad;
            --white: #ffffff;
            --muted: #a6acaf;
            --soft: #d7e4ed;
            --line: rgba(0, 240, 255, .18);
            --line-light: rgba(255, 255, 255, .1);
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 24px 70px rgba(0, 0, 0, .3);
            --glow: 0 0 26px rgba(0, 240, 255, .2);
            --container: 1180px;
        }

        * { box-sizing: border-box; }

        html {
            scroll-behavior: smooth;
            background: var(--violet);
        }

        body {
            margin: 0;
            color: var(--white);
            background:
                radial-gradient(circle at 10% 0%, rgba(0, 240, 255, .08), transparent 28rem),
                radial-gradient(circle at 88% 20%, rgba(204, 255, 0, .06), transparent 25rem),
                var(--violet);
            font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.62;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            opacity: .25;
            background-image:
                linear-gradient(rgba(0, 240, 255, .035) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 240, 255, .035) 1px, transparent 1px);
            background-size: 42px 42px;
            mask-image: linear-gradient(to bottom, black, transparent 78%);
            z-index: -1;
        }

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

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

        button, input { font: inherit; }
        button { cursor: pointer; }

        :focus-visible {
            outline: 3px solid var(--lime);
            outline-offset: 3px;
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(9, 13, 29, .86);
            border-bottom: 1px solid rgba(0, 240, 255, .14);
            backdrop-filter: blur(18px);
        }

        .nav-shell {
            min-height: 76px;
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            min-width: 250px;
            font-size: 15px;
            font-weight: 800;
            letter-spacing: -.02em;
            line-height: 1.18;
        }

        .brand-mark {
            width: 42px;
            height: 42px;
            display: grid;
            place-items: center;
            flex: 0 0 42px;
            color: var(--ink);
            background: linear-gradient(135deg, var(--lime), var(--cyan));
            border-radius: 13px 5px 13px 5px;
            box-shadow: 0 0 22px rgba(0, 240, 255, .35);
            transform: rotate(-5deg);
        }

        .brand span:last-child { max-width: 210px; }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 7px;
            flex: 1;
        }

        .main-nav a {
            position: relative;
            padding: 10px 13px;
            color: var(--muted);
            border-radius: 10px;
            font-size: 14px;
            font-weight: 700;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--white);
            background: rgba(0, 240, 255, .08);
        }

        .main-nav a.active::after {
            content: "";
            position: absolute;
            left: 13px;
            right: 13px;
            bottom: 3px;
            height: 2px;
            background: var(--cyan);
            box-shadow: 0 0 10px var(--cyan);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .button-neon,
        .button-ghost,
        .button-lime {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            min-height: 47px;
            padding: 12px 19px;
            border: 1px solid transparent;
            border-radius: 11px;
            font-size: 14px;
            font-weight: 800;
            line-height: 1.2;
            transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
        }

        .button-neon {
            color: var(--ink);
            background: var(--cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, .27);
        }

        .button-neon:hover {
            color: var(--ink);
            background: #8cffff;
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(0, 240, 255, .48);
        }

        .button-ghost {
            color: var(--cyan);
            border-color: rgba(0, 240, 255, .42);
            background: rgba(0, 240, 255, .06);
        }

        .button-ghost:hover {
            color: var(--white);
            background: rgba(0, 240, 255, .14);
            border-color: var(--cyan);
            transform: translateY(-2px);
        }

        .button-lime {
            color: #101700;
            background: var(--lime);
            box-shadow: 0 0 22px rgba(204, 255, 0, .22);
        }

        .button-lime:hover {
            color: #101700;
            background: #e4ff73;
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(204, 255, 0, .4);
        }

        .menu-toggle {
            display: none;
            color: var(--white);
            border: 1px solid var(--line);
            background: rgba(0, 240, 255, .06);
            border-radius: 10px;
            width: 43px;
            height: 43px;
        }

        .feature-hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: flex-end;
            padding: 132px 0 60px;
            overflow: hidden;
            border-bottom: 1px solid var(--line);
            background:
                linear-gradient(90deg, rgba(8, 16, 31, .94) 0%, rgba(8, 16, 31, .72) 48%, rgba(8, 16, 31, .32) 100%),
                url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
        }

        .feature-hero::after {
            content: "";
            position: absolute;
            inset: auto 0 0;
            height: 45%;
            background: linear-gradient(transparent, var(--violet));
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .eyebrow,
        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
            color: var(--lime);
            font-size: 12px;
            font-weight: 900;
            letter-spacing: .11em;
            text-transform: uppercase;
        }

        .eyebrow::before,
        .section-kicker::before {
            content: "";
            width: 28px;
            height: 2px;
            background: var(--cyan);
            box-shadow: 0 0 10px var(--cyan);
        }

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

        h1 {
            max-width: 900px;
            margin-bottom: 20px;
            font-size: clamp(2.25rem, 5.5vw, 4.55rem);
            line-height: 1.04;
            letter-spacing: -.055em;
            font-weight: 900;
        }

        .hero-lead {
            max-width: 690px;
            margin-bottom: 27px;
            color: var(--soft);
            font-size: 18px;
            line-height: 1.7;
        }

        .hero-commands {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .channel-strip {
            position: relative;
            z-index: 10;
            margin-top: -32px;
        }

        .channel-list {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px;
            overflow-x: auto;
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            background: rgba(17, 28, 49, .92);
            box-shadow: var(--shadow);
            scrollbar-width: thin;
        }

        .channel-item {
            display: inline-flex;
            align-items: center;
            flex: 0 0 auto;
            gap: 8px;
            padding: 10px 14px;
            color: var(--muted);
            border: 1px solid transparent;
            border-radius: 9px;
            font-size: 13px;
            font-weight: 800;
        }

        .channel-item i { color: var(--cyan); }

        .channel-item.active,
        .channel-item:hover {
            color: var(--white);
            border-color: rgba(0, 240, 255, .32);
            background: rgba(0, 240, 255, .09);
        }

        main { padding-bottom: 88px; }

        .section {
            padding: 94px 0;
        }

        .section + .section {
            border-top: 1px solid rgba(255, 255, 255, .055);
        }

        .section-heading {
            max-width: 700px;
            margin-bottom: 38px;
        }

        .section-heading h2,
        .story-copy h2,
        .safe-panel h2,
        .cta-block h2 {
            margin-bottom: 14px;
            font-size: clamp(1.7rem, 3vw, 2.65rem);
            line-height: 1.16;
            letter-spacing: -.035em;
            font-weight: 900;
        }

        .section-heading p,
        .story-copy p,
        .safe-panel p {
            color: var(--muted);
            font-size: 16px;
        }

        .intro-grid {
            align-items: center;
            gap: 34px;
        }

        .intro-copy {
            padding-right: 32px;
        }

        .intro-copy h2 {
            margin-bottom: 18px;
            font-size: clamp(1.85rem, 3.4vw, 3rem);
            line-height: 1.16;
            letter-spacing: -.04em;
            font-weight: 900;
        }

        .intro-copy p {
            color: var(--muted);
            margin-bottom: 22px;
        }

        .signal-list {
            display: grid;
            gap: 13px;
            margin: 28px 0 0;
            padding: 0;
            list-style: none;
        }

        .signal-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--soft);
        }

        .signal-list i {
            display: grid;
            place-items: center;
            width: 25px;
            height: 25px;
            flex: 0 0 25px;
            margin-top: 1px;
            color: var(--ink);
            border-radius: 50%;
            background: var(--lime);
            font-size: 12px;
        }

        .visual-frame {
            position: relative;
            min-height: 385px;
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: 25px 7px 25px 7px;
            background: var(--deep);
            box-shadow: var(--shadow);
        }

        .visual-frame img {
            width: 100%;
            height: 385px;
            object-fit: cover;
            opacity: .84;
        }

        .visual-frame::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(0, 240, 255, .14), transparent 44%, rgba(204, 255, 0, .1));
            pointer-events: none;
        }

        .visual-tag {
            position: absolute;
            right: 19px;
            bottom: 19px;
            z-index: 2;
            max-width: 250px;
            padding: 13px 15px;
            color: var(--white);
            border: 1px solid rgba(0, 240, 255, .35);
            border-radius: 10px;
            background: rgba(8, 16, 31, .8);
            backdrop-filter: blur(9px);
            font-size: 13px;
            font-weight: 750;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 16px;
        }

        .feature-card {
            position: relative;
            min-height: 195px;
            padding: 25px;
            overflow: hidden;
            border: 1px solid var(--line-light);
            border-radius: var(--radius);
            background: linear-gradient(145deg, rgba(21, 36, 61, .96), rgba(13, 23, 42, .96));
            transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            border-color: rgba(0, 240, 255, .56);
            box-shadow: var(--glow), 0 18px 40px rgba(0, 0, 0, .2);
        }

        .feature-card.large { grid-column: span 5; }
        .feature-card.medium { grid-column: span 4; }
        .feature-card.wide { grid-column: span 7; }

        .feature-icon {
            display: grid;
            place-items: center;
            width: 48px;
            height: 48px;
            margin-bottom: 21px;
            color: var(--cyan);
            border: 1px solid rgba(0, 240, 255, .35);
            border-radius: 14px 5px 14px 5px;
            background: rgba(0, 240, 255, .07);
            font-size: 20px;
        }

        .feature-card:nth-child(2) .feature-icon,
        .feature-card:nth-child(4) .feature-icon {
            color: var(--lime);
            border-color: rgba(204, 255, 0, .32);
            background: rgba(204, 255, 0, .06);
        }

        .feature-card h3 {
            margin-bottom: 9px;
            font-size: 18px;
            line-height: 1.25;
            font-weight: 850;
        }

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

        .story-section {
            position: relative;
            overflow: hidden;
            background: linear-gradient(100deg, rgba(0, 240, 255, .055), transparent 54%);
        }

        .story-section::before {
            content: "2017";
            position: absolute;
            top: 26px;
            right: max(5%, calc((100% - 1180px) / 2));
            color: rgba(0, 240, 255, .045);
            font-size: clamp(8rem, 20vw, 18rem);
            font-weight: 900;
            line-height: .8;
            pointer-events: none;
        }

        .story-grid {
            position: relative;
            z-index: 1;
            align-items: start;
            gap: 38px;
        }

        .story-copy { padding-right: 35px; }

        .story-copy .quote-line {
            margin-top: 27px;
            padding-left: 18px;
            color: var(--soft);
            border-left: 3px solid var(--cyan);
            font-size: 17px;
            font-weight: 700;
            line-height: 1.6;
        }

        .result-stack {
            display: grid;
            gap: 11px;
        }

        .result-row {
            display: grid;
            grid-template-columns: 54px 1fr;
            gap: 15px;
            align-items: center;
            padding: 17px;
            border-bottom: 1px solid var(--line-light);
        }

        .result-row:first-child {
            border-top: 1px solid var(--line-light);
        }

        .result-index {
            display: grid;
            place-items: center;
            width: 45px;
            height: 45px;
            color: var(--lime);
            border: 1px solid rgba(204, 255, 0, .32);
            border-radius: 12px;
            background: rgba(204, 255, 0, .06);
            font-size: 14px;
            font-weight: 900;
        }

        .result-row h3 {
            margin: 0 0 3px;
            font-size: 16px;
            font-weight: 850;
        }

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

        .safe-layout {
            align-items: stretch;
            gap: 28px;
        }

        .safe-panel {
            padding: 34px;
            border: 1px solid var(--line);
            border-radius: 22px;
            background:
                linear-gradient(130deg, rgba(0, 240, 255, .09), transparent 48%),
                var(--panel);
            box-shadow: var(--shadow);
        }

        .safe-panel h2 { max-width: 520px; }

        .safe-checks {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 14px 22px;
            margin: 29px 0 0;
            padding: 0;
            list-style: none;
        }

        .safe-checks li {
            display: flex;
            gap: 10px;
            color: var(--soft);
            font-size: 14px;
        }

        .safe-checks i {
            margin-top: 4px;
            color: var(--cyan);
        }

        .notice-card {
            height: 100%;
            padding: 30px;
            border: 1px solid rgba(255, 60, 173, .28);
            border-radius: var(--radius);
            background: linear-gradient(145deg, rgba(255, 60, 173, .12), rgba(17, 28, 49, .94) 44%);
        }

        .notice-card .notice-icon {
            display: grid;
            place-items: center;
            width: 52px;
            height: 52px;
            margin-bottom: 21px;
            color: #ffd3ed;
            border-radius: 14px;
            background: rgba(255, 60, 173, .16);
            font-size: 21px;
        }

        .notice-card h3 {
            margin-bottom: 12px;
            font-size: 21px;
            line-height: 1.25;
            font-weight: 900;
        }

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

        .notice-card strong { color: var(--white); }

        .steps-wrap {
            display: grid;
            grid-template-columns: minmax(230px, .7fr) 1.3fr;
            gap: 55px;
            align-items: start;
        }

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

        .steps-intro p {
            color: var(--muted);
        }

        .steps-intro .button-ghost { margin-top: 12px; }

        .steps {
            counter-reset: steps;
            display: grid;
            gap: 3px;
        }

        .step {
            position: relative;
            padding: 0 0 27px 84px;
            min-height: 99px;
            border-left: 1px solid var(--line);
        }

        .step:last-child {
            padding-bottom: 0;
            border-left-color: transparent;
        }

        .step::before {
            counter-increment: steps;
            content: "0" counter(steps);
            position: absolute;
            top: 0;
            left: -24px;
            display: grid;
            place-items: center;
            width: 48px;
            height: 48px;
            color: var(--ink);
            border-radius: 50%;
            background: var(--cyan);
            box-shadow: 0 0 21px rgba(0, 240, 255, .32);
            font-size: 13px;
            font-weight: 900;
        }

        .step:nth-child(even)::before {
            background: var(--lime);
        }

        .step h3 {
            margin-bottom: 7px;
            font-size: 18px;
            font-weight: 850;
        }

        .step p {
            max-width: 610px;
            margin: 0;
            color: var(--muted);
            font-size: 15px;
        }

        .faq-shell {
            display: grid;
            grid-template-columns: .75fr 1.25fr;
            gap: 70px;
            align-items: start;
        }

        .faq-side {
            position: sticky;
            top: 108px;
        }

        .faq-side p {
            color: var(--muted);
        }

        .faq-list {
            border-top: 1px solid var(--line-light);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 22px 2px;
            color: var(--white);
            border: 0;
            background: transparent;
            text-align: left;
            font-size: 16px;
            font-weight: 800;
        }

        .faq-question i {
            color: var(--cyan);
            transition: transform .25s ease;
        }

        .faq-item.is-open .faq-question i { transform: rotate(45deg); }

        .faq-answer {
            display: none;
            max-width: 720px;
            padding: 0 35px 22px 2px;
            color: var(--muted);
            font-size: 15px;
        }

        .faq-item.is-open .faq-answer { display: block; }

        .cta-section { padding-top: 42px; }

        .cta-block {
            position: relative;
            overflow: hidden;
            padding: 53px 48px;
            border: 1px solid rgba(0, 240, 255, .33);
            border-radius: 26px 8px 26px 8px;
            background:
                linear-gradient(105deg, rgba(8, 16, 31, .97), rgba(8, 16, 31, .77)),
                url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            box-shadow: var(--shadow), var(--glow);
            text-align: center;
        }

        .cta-block::before {
            content: "";
            position: absolute;
            width: 300px;
            height: 300px;
            top: -170px;
            right: -85px;
            border-radius: 50%;
            background: rgba(204, 255, 0, .13);
            filter: blur(18px);
        }

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

        .cta-block h2 {
            max-width: 710px;
            margin-inline: auto;
        }

        .cta-block p {
            max-width: 690px;
            margin: 0 auto 27px;
            color: var(--soft);
        }

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

        .site-footer {
            border-top: 1px solid var(--line);
            background: rgba(6, 11, 25, .78);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.55fr repeat(3, 1fr);
            gap: 32px;
            padding: 58px 0 38px;
        }

        .footer-brand .brand {
            min-width: 0;
            margin-bottom: 16px;
        }

        .footer-brand p {
            max-width: 360px;
            color: var(--muted);
            font-size: 14px;
        }

        .footer-title {
            margin: 6px 0 15px;
            color: var(--white);
            font-size: 14px;
            font-weight: 900;
        }

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

        .footer-links li {
            margin-bottom: 10px;
            color: var(--muted);
            font-size: 13px;
        }

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

        .footer-links i {
            width: 19px;
            color: var(--cyan);
        }

        .trust-line {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 18px;
        }

        .trust-line span {
            padding: 5px 9px;
            color: var(--lime);
            border: 1px solid rgba(204, 255, 0, .28);
            border-radius: 7px;
            background: rgba(204, 255, 0, .05);
            font-size: 11px;
            font-weight: 800;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding: 19px 0 26px;
            color: #778298;
            border-top: 1px solid var(--line-light);
            font-size: 12px;
        }

        .support-fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 80;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 57px;
            height: 57px;
            color: var(--cyan);
            border: 1px solid transparent;
            border-radius: 17px 7px 17px 7px;
            background:
                linear-gradient(var(--ink), var(--ink)) padding-box,
                linear-gradient(135deg, var(--lime), var(--cyan)) border-box;
            box-shadow: 0 0 17px rgba(0, 240, 255, .48);
            opacity: .72;
            animation: fabPulse 2.4s ease-in-out infinite;
        }

        .support-fab i {
            font-size: 21px;
            text-shadow: 0 0 12px var(--cyan);
        }

        .support-fab::after {
            content: "MỚI";
            position: absolute;
            top: -8px;
            right: -11px;
            padding: 2px 5px;
            color: var(--white);
            border-radius: 5px;
            background: var(--pink);
            font-size: 8px;
            font-weight: 900;
            letter-spacing: .05em;
            animation: blink 1.2s infinite;
        }

        .support-fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, .75);
        }

        .support-fab:hover i { animation: flicker .35s linear 2; }
        .support-fab:active { transform: scale(.94); }

        @keyframes fabPulse {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-7px); }
        }

        @keyframes blink {
            50% { opacity: .35; }
        }

        @keyframes flicker {
            0%, 100% { opacity: 1; }
            40% { opacity: .25; }
            70% { opacity: .85; }
        }

        @media (max-width: 1024px) {
            .nav-shell { gap: 16px; }
            .brand { min-width: 210px; }
            .main-nav a { padding-inline: 9px; }
            .nav-actions .button-ghost { display: none; }
            .footer-grid { grid-template-columns: 1.5fr repeat(2, 1fr); }
            .footer-grid > div:last-child { grid-column: 2 / 4; }
            .feature-card.large,
            .feature-card.medium,
            .feature-card.wide { grid-column: span 6; }
        }

        @media (max-width: 768px) {
            .site-container { width: min(calc(100% - 30px), var(--container)); }
            .nav-shell { min-height: 68px; gap: 10px; }
            .brand { min-width: 0; margin-right: auto; font-size: 13px; }
            .brand-mark { width: 36px; height: 36px; flex-basis: 36px; }
            .brand span:last-child { max-width: 155px; }
            .menu-toggle { display: grid; place-items: center; }
            .main-nav {
                position: absolute;
                top: calc(100% + 1px);
                left: 0;
                right: 0;
                display: none;
                align-items: stretch;
                flex-direction: column;
                gap: 3px;
                padding: 12px 15px 16px;
                border-bottom: 1px solid var(--line);
                background: rgba(9, 13, 29, .98);
            }
            .main-nav.is-open { display: flex; }
            .main-nav a { padding: 12px; }
            .nav-actions { gap: 7px; }
            .nav-actions .button-neon {
                min-height: 39px;
                padding: 9px 11px;
                font-size: 12px;
            }
            .feature-hero {
                min-height: 550px;
                padding: 108px 0 56px;
                background-position: 62% center;
            }
            h1 { font-size: clamp(2rem, 9vw, 3.3rem); }
            .hero-lead { font-size: 16px; }
            .section { padding: 68px 0; }
            .intro-copy { padding-right: 0; }
            .intro-grid, .story-grid, .safe-layout { gap: 27px; }
            .visual-frame, .visual-frame img { min-height: 310px; height: 310px; }
            .story-copy { padding-right: 0; }
            .steps-wrap, .faq-shell { grid-template-columns: 1fr; gap: 30px; }
            .steps-intro, .faq-side { position: static; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 26px; }
            .footer-grid > div:last-child { grid-column: auto; }
        }

        @media (max-width: 520px) {
            .nav-actions .button-neon span { display: none; }
            .nav-actions .button-neon { width: 40px; padding: 0; }
            .brand span:last-child { max-width: 138px; font-size: 12px; }
            .hero-commands, .cta-actions { align-items: stretch; flex-direction: column; }
            .hero-commands a, .cta-actions a { width: 100%; }
            .channel-strip { margin-top: -20px; }
            .channel-list { padding: 8px; }
            .feature-card.large,
            .feature-card.medium,
            .feature-card.wide { grid-column: span 12; min-height: 0; }
            .feature-card { padding: 22px; }
            .safe-panel, .notice-card { padding: 25px; }
            .safe-checks { grid-template-columns: 1fr; }
            .step { padding-left: 65px; }
            .step::before { left: -20px; width: 40px; height: 40px; }
            .cta-block { padding: 38px 23px; }
            .footer-grid { grid-template-columns: 1fr; padding-top: 45px; }
            .footer-bottom { flex-direction: column; gap: 7px; }
            .support-fab { bottom: 24px; }
        }