/* roulang page: index */
:root {
            --ink: #08090f;
            --navy: #0d111e;
            --panel: rgba(18, 27, 48, .76);
            --panel-strong: #121b30;
            --blue: #1769ff;
            --blue-bright: #0052ff;
            --cyan: #00f0ff;
            --cyan-soft: #9defff;
            --white: #ffffff;
            --silver: #cbd5e1;
            --muted: #8996aa;
            --line: rgba(151, 178, 220, .19);
            --line-bright: rgba(0, 240, 255, .45);
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 20px 65px rgba(0, 0, 0, .35);
            --glow: 0 0 28px rgba(0, 240, 255, .2);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            min-width: 320px;
            color: var(--silver);
            background:
                linear-gradient(rgba(10, 17, 31, .92), rgba(8, 9, 15, .98)),
                repeating-linear-gradient(0deg, transparent 0, transparent 39px, rgba(0, 240, 255, .035) 40px),
                repeating-linear-gradient(90deg, transparent 0, transparent 39px, rgba(0, 240, 255, .035) 40px),
                var(--ink);
            font-family: "Be Vietnam Pro", sans-serif;
            font-size: 16px;
            line-height: 1.65;
            overflow-x: hidden;
        }

        h1, h2, h3, h4, p {
            margin-top: 0;
        }

        h1, h2, h3, h4 {
            color: var(--white);
            font-family: "Space Grotesk", "Be Vietnam Pro", sans-serif;
            line-height: 1.16;
            letter-spacing: -.035em;
        }

        h1 {
            font-size: clamp(2.35rem, 5.2vw, 5rem);
            font-weight: 700;
        }

        h2 {
            font-size: clamp(1.85rem, 3.4vw, 3.15rem);
            font-weight: 700;
        }

        h3 {
            font-size: clamp(1.15rem, 2vw, 1.5rem);
        }

        p {
            color: var(--silver);
        }

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

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

        button,
        .btn {
            font-family: inherit;
        }

        .container {
            width: min(1180px, calc(100% - 40px));
            margin: 0 auto;
        }

        .site-header {
            position: fixed;
            z-index: 1000;
            inset: 0 0 auto;
            background: rgba(8, 9, 15, .78);
            border-bottom: 1px solid rgba(0, 240, 255, .14);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .nav-shell {
            min-height: 78px;
            display: flex;
            align-items: center;
            gap: 25px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            min-width: max-content;
        }

        .brand-mark {
            width: 38px;
            height: 38px;
            display: grid;
            place-items: center;
            color: var(--ink);
            background: linear-gradient(145deg, var(--cyan), var(--blue));
            clip-path: polygon(20% 0, 100% 0, 80% 100%, 0 100%);
            font-family: "Space Grotesk", sans-serif;
            font-weight: 800;
            box-shadow: 0 0 18px rgba(0, 240, 255, .5);
        }

        .brand-copy strong,
        .brand-copy small {
            display: block;
        }

        .brand-copy strong {
            color: var(--white);
            font-family: "Space Grotesk", sans-serif;
            font-size: 1.05rem;
            letter-spacing: -.04em;
        }

        .brand-copy small {
            color: var(--cyan);
            font-size: .64rem;
            font-weight: 700;
            letter-spacing: .08em;
            text-transform: uppercase;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
        }

        .nav-link {
            position: relative;
            padding: 10px 14px !important;
            color: var(--muted) !important;
            font-size: .9rem;
            font-weight: 600;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--cyan);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .25s ease;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--white) !important;
        }

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            min-width: max-content;
        }

        .login-link {
            color: var(--white);
            padding: 9px 12px;
            font-size: .85rem;
            font-weight: 700;
        }

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

        .btn-neon,
        .btn-outline-neon {
            border-radius: 10px;
            font-size: .86rem;
            font-weight: 800;
            padding: 12px 18px;
            letter-spacing: -.01em;
            transition: transform .25s ease, box-shadow .25s ease, background-color .25s ease, color .25s ease;
        }

        .btn-neon {
            color: var(--ink);
            border: 1px solid var(--cyan);
            background: var(--cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, .28);
        }

        .btn-neon:hover {
            color: var(--ink);
            background: #83f7ff;
            transform: translateY(-3px);
            box-shadow: 0 0 30px rgba(0, 240, 255, .55);
        }

        .btn-outline-neon {
            color: var(--cyan);
            border: 1px solid var(--line-bright);
            background: rgba(0, 240, 255, .04);
        }

        .btn-outline-neon:hover {
            color: var(--white);
            background: rgba(0, 240, 255, .12);
            border-color: var(--cyan);
            transform: translateY(-3px);
            box-shadow: var(--glow);
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(0, 240, 255, .7);
            outline-offset: 3px;
        }

        .navbar-toggler {
            display: none;
            color: var(--cyan);
            border: 1px solid var(--line-bright);
            border-radius: 9px;
            padding: 8px 11px;
            background: rgba(0, 240, 255, .06);
        }

        .hero {
            position: relative;
            min-height: 690px;
            display: flex;
            align-items: flex-end;
            padding: 150px 0 58px;
            background-image:
                linear-gradient(90deg, rgba(8, 9, 15, .96) 0%, rgba(8, 9, 15, .72) 42%, rgba(8, 9, 15, .25) 100%),
                linear-gradient(0deg, rgba(8, 9, 15, .97) 0%, transparent 46%),
                url("/assets/images/backpic/back-1.jpg");
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid rgba(0, 240, 255, .16);
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            background: linear-gradient(115deg, transparent 0 48%, rgba(0, 240, 255, .12) 49%, transparent 50%);
            opacity: .45;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
        }

        .hero-copy {
            max-width: 790px;
        }

        .eyebrow,
        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            margin-bottom: 18px;
            color: var(--cyan);
            font-size: .72rem;
            font-weight: 800;
            letter-spacing: .13em;
            text-transform: uppercase;
        }

        .eyebrow::before,
        .section-kicker::before {
            content: "";
            width: 27px;
            height: 2px;
            background: var(--cyan);
            box-shadow: 0 0 10px var(--cyan);
        }

        .hero h1 {
            max-width: 900px;
            margin-bottom: 22px;
            text-shadow: 0 4px 24px rgba(0, 0, 0, .6);
        }

        .hero-lead {
            max-width: 710px;
            margin-bottom: 30px;
            color: #e2edf8;
            font-size: clamp(1rem, 1.6vw, 1.2rem);
            line-height: 1.72;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 13px;
            margin-bottom: 45px;
        }

        .hero-proof {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            max-width: 870px;
            border-top: 1px solid rgba(157, 239, 255, .28);
            border-bottom: 1px solid rgba(157, 239, 255, .18);
        }

        .proof-item {
            min-height: 76px;
            display: flex;
            align-items: center;
            gap: 13px;
            padding: 14px 20px 14px 0;
            border-right: 1px solid rgba(157, 239, 255, .2);
        }

        .proof-item:not(:first-child) {
            padding-left: 20px;
        }

        .proof-item:last-child {
            border-right: 0;
        }

        .proof-icon {
            color: var(--cyan);
            font-size: 1.22rem;
        }

        .proof-item strong,
        .proof-item span {
            display: block;
        }

        .proof-item strong {
            color: var(--white);
            font-family: "Space Grotesk", sans-serif;
            font-size: 1.08rem;
        }

        .proof-item span {
            color: var(--muted);
            font-size: .78rem;
        }

        main {
            position: relative;
        }

        .section {
            padding: 112px 0;
        }

        .section-head {
            max-width: 750px;
            margin-bottom: 43px;
        }

        .section-head h2 {
            margin-bottom: 15px;
        }

        .section-head p {
            max-width: 690px;
            margin-bottom: 0;
            color: var(--muted);
        }

        .discovery {
            position: relative;
            overflow: hidden;
        }

        .discovery-grid {
            display: grid;
            grid-template-columns: 1.12fr .88fr;
            gap: 48px;
            align-items: center;
        }

        .visual-frame {
            position: relative;
            min-height: 480px;
            overflow: hidden;
            border: 1px solid var(--line-bright);
            border-radius: 25px 5px 25px 5px;
            box-shadow: var(--shadow), var(--glow);
        }

        .visual-frame img {
            width: 100%;
            height: 100%;
            min-height: 480px;
            object-fit: cover;
            opacity: .86;
        }

        .visual-frame::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(8, 9, 15, .9), transparent 62%);
        }

        .visual-caption {
            position: absolute;
            z-index: 2;
            left: 28px;
            right: 28px;
            bottom: 24px;
        }

        .visual-caption strong {
            display: block;
            color: var(--white);
            font-family: "Space Grotesk", sans-serif;
            font-size: 1.5rem;
        }

        .visual-caption span {
            color: var(--cyan-soft);
            font-size: .88rem;
        }

        .path-panel {
            padding-left: 8px;
        }

        .path-panel h3 {
            margin-bottom: 18px;
        }

        .path-panel > p {
            color: var(--muted);
            margin-bottom: 27px;
        }

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

        .path-list li {
            display: grid;
            grid-template-columns: 42px 1fr;
            gap: 15px;
            padding: 18px 0;
            border-top: 1px solid var(--line);
        }

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

        .path-number {
            width: 34px;
            height: 34px;
            display: grid;
            place-items: center;
            color: var(--cyan);
            border: 1px solid var(--line-bright);
            background: rgba(0, 240, 255, .07);
            font-family: "Space Grotesk", sans-serif;
            font-weight: 700;
            clip-path: polygon(17% 0, 100% 0, 83% 100%, 0 100%);
        }

        .path-list strong {
            display: block;
            margin-bottom: 3px;
            color: var(--white);
            font-size: 1rem;
        }

        .path-list span {
            display: block;
            color: var(--muted);
            font-size: .86rem;
        }

        .featured {
            padding-top: 35px;
            background: rgba(13, 17, 30, .62);
            border-top: 1px solid rgba(0, 240, 255, .08);
            border-bottom: 1px solid rgba(0, 240, 255, .08);
        }

        .launch-layout {
            display: grid;
            grid-template-columns: minmax(0, 1.45fr) minmax(270px, .55fr);
            gap: 34px;
            align-items: start;
        }

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

        .launch-row {
            display: grid;
            grid-template-columns: 58px minmax(0, 1fr) auto;
            gap: 18px;
            align-items: center;
            padding: 22px 0;
            border-bottom: 1px solid var(--line);
            transition: padding .25s ease, background-color .25s ease;
        }

        .launch-row:hover {
            padding-left: 14px;
            padding-right: 14px;
            background: rgba(0, 240, 255, .045);
        }

        .launch-index {
            color: var(--blue);
            font-family: "Space Grotesk", sans-serif;
            font-size: 1.7rem;
            font-weight: 700;
        }

        .launch-row h3 {
            margin-bottom: 5px;
            font-size: 1.18rem;
        }

        .launch-row p {
            margin-bottom: 0;
            color: var(--muted);
            font-size: .88rem;
        }

        .text-link {
            color: var(--cyan);
            font-size: .84rem;
            font-weight: 700;
            white-space: nowrap;
        }

        .text-link:hover {
            color: var(--white);
            transform: translateX(4px);
        }

        .spotlight {
            position: relative;
            min-height: 255px;
            padding: 27px;
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, .28);
            background:
                linear-gradient(140deg, rgba(0, 82, 255, .28), rgba(13, 17, 30, .92)),
                url("/assets/images/coverpic/cover-2.jpg") center/cover;
            clip-path: polygon(0 0, 94% 0, 100% 12%, 100% 100%, 6% 100%, 0 88%);
        }

        .spotlight::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(8, 9, 15, .36);
        }

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

        .spotlight .mini-label {
            color: var(--cyan);
            font-size: .72rem;
            font-weight: 800;
            letter-spacing: .12em;
            text-transform: uppercase;
        }

        .spotlight h3 {
            max-width: 250px;
            margin: 18px 0 11px;
        }

        .spotlight p {
            margin-bottom: 22px;
            color: #dce9f6;
            font-size: .88rem;
        }

        .category-section {
            padding-bottom: 92px;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .category-tile {
            position: relative;
            min-height: 285px;
            display: flex;
            align-items: flex-end;
            overflow: hidden;
            padding: 28px;
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            isolation: isolate;
        }

        .category-tile img {
            position: absolute;
            z-index: -2;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .category-tile::after {
            content: "";
            position: absolute;
            z-index: -1;
            inset: 0;
            background: linear-gradient(0deg, rgba(8, 9, 15, .97), rgba(8, 9, 15, .12));
        }

        .category-tile:hover {
            border-color: var(--cyan);
            box-shadow: var(--glow);
        }

        .category-tile:hover img {
            transform: scale(1.06);
        }

        .category-tile h3 {
            margin-bottom: 8px;
        }

        .category-tile p {
            max-width: 475px;
            margin-bottom: 16px;
            color: #c9d7e7;
            font-size: .89rem;
        }

        .story {
            position: relative;
            padding: 92px 0;
            background:
                linear-gradient(90deg, rgba(8, 9, 15, .98), rgba(13, 17, 30, .72)),
                url("/assets/images/backpic/back-2.jpg") center/cover;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .story-grid {
            display: grid;
            grid-template-columns: .85fr 1.15fr;
            gap: 70px;
            align-items: center;
        }

        .story h2 {
            margin-bottom: 17px;
        }

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

        .story-note {
            padding: 22px 25px;
            border-left: 3px solid var(--cyan);
            background: rgba(0, 240, 255, .055);
            color: #d7e6f5;
            font-size: 1.03rem;
        }

        .signal-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }

        .signal {
            min-height: 143px;
            padding: 22px;
            border: 1px solid var(--line);
            background: rgba(18, 27, 48, .55);
            border-radius: 14px;
        }

        .signal i {
            margin-bottom: 15px;
            color: var(--cyan);
            font-size: 1.25rem;
        }

        .signal strong {
            display: block;
            color: var(--white);
            font-size: .98rem;
        }

        .signal span {
            display: block;
            margin-top: 5px;
            color: var(--muted);
            font-size: .8rem;
        }

        .reviews {
            padding-bottom: 95px;
        }

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

        .review {
            position: relative;
            padding: 26px 24px 24px;
            border-top: 2px solid var(--blue);
            background: var(--panel);
            box-shadow: 0 15px 40px rgba(0, 0, 0, .16);
        }

        .review::before {
            content: "“";
            display: block;
            height: 35px;
            color: var(--cyan);
            font-family: Georgia, serif;
            font-size: 3.4rem;
            line-height: .8;
        }

        .review p {
            min-height: 108px;
            margin: 14px 0 22px;
            color: #d4e0ed;
            font-size: .93rem;
        }

        .review footer {
            display: flex;
            align-items: center;
            gap: 11px;
            color: var(--muted);
            font-size: .78rem;
        }

        .review-avatar {
            width: 31px;
            height: 31px;
            display: grid;
            place-items: center;
            color: var(--ink);
            background: var(--cyan);
            border-radius: 50%;
            font-size: .72rem;
            font-weight: 800;
        }

        .news-section {
            padding: 98px 0;
            background: rgba(13, 17, 30, .6);
            border-top: 1px solid rgba(0, 240, 255, .08);
        }

        .news-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 330px;
            gap: 45px;
            align-items: start;
        }

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

        .news-item {
            display: grid;
            grid-template-columns: 110px minmax(0, 1fr);
            gap: 21px;
            padding: 21px 0;
            border-bottom: 1px solid var(--line);
        }

        .news-meta {
            color: var(--cyan);
            font-size: .74rem;
            font-weight: 700;
            line-height: 1.45;
        }

        .news-meta span {
            display: block;
            margin-top: 5px;
            color: var(--muted);
            font-size: .72rem;
            font-weight: 500;
        }

        .news-item h3 {
            margin-bottom: 6px;
            font-size: 1.08rem;
        }

        .news-item p {
            margin-bottom: 0;
            color: var(--muted);
            font-size: .86rem;
        }

        .news-side {
            padding: 25px;
            border: 1px solid var(--line);
            background: rgba(8, 9, 15, .58);
        }

        .news-side h3 {
            margin-bottom: 16px;
        }

        .news-side p {
            margin-bottom: 20px;
            color: var(--muted);
            font-size: .88rem;
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag {
            display: inline-flex;
            padding: 7px 10px;
            color: var(--cyan-soft);
            border: 1px solid rgba(0, 240, 255, .24);
            background: rgba(0, 240, 255, .06);
            border-radius: 6px;
            font-size: .76rem;
            font-weight: 600;
        }

        .access-section {
            padding: 100px 0;
        }

        .access-band {
            position: relative;
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            gap: 45px;
            align-items: center;
            padding: 49px;
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, .38);
            background:
                linear-gradient(120deg, rgba(0, 82, 255, .2), rgba(13, 17, 30, .86)),
                url("/assets/images/backpic/back-3.jpg") center/cover;
            clip-path: polygon(0 0, 98% 0, 100% 18%, 100% 100%, 2% 100%, 0 82%);
        }

        .access-band::before {
            content: "";
            position: absolute;
            width: 390px;
            height: 390px;
            right: -130px;
            top: -160px;
            border: 1px solid rgba(0, 240, 255, .25);
            border-radius: 50%;
            box-shadow: 0 0 0 25px rgba(0, 240, 255, .03), 0 0 0 55px rgba(0, 240, 255, .025);
        }

        .access-band > * {
            position: relative;
            z-index: 1;
        }

        .access-band h2 {
            margin-bottom: 15px;
        }

        .access-band p {
            max-width: 630px;
            margin-bottom: 0;
            color: #d0deed;
        }

        .step-cards {
            display: grid;
            gap: 11px;
        }

        .step-card {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 15px 17px;
            border: 1px solid rgba(157, 239, 255, .2);
            background: rgba(8, 9, 15, .52);
        }

        .step-card b {
            display: grid;
            width: 30px;
            height: 30px;
            place-items: center;
            flex: 0 0 30px;
            color: var(--ink);
            background: var(--cyan);
            font-size: .8rem;
            clip-path: polygon(18% 0, 100% 0, 82% 100%, 0 100%);
        }

        .step-card span {
            color: var(--white);
            font-size: .87rem;
            font-weight: 600;
        }

        .faq-section {
            padding: 22px 0 115px;
        }

        .faq-layout {
            display: grid;
            grid-template-columns: .72fr 1.28fr;
            gap: 65px;
            align-items: start;
        }

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

        .accordion-item {
            color: var(--silver);
            background: transparent;
            border: 0;
            border-bottom: 1px solid var(--line);
        }

        .accordion-button {
            padding: 21px 4px;
            color: var(--white);
            background: transparent !important;
            box-shadow: none !important;
            font-weight: 700;
        }

        .accordion-button::after {
            filter: invert(1) sepia(1) saturate(3) hue-rotate(145deg);
        }

        .accordion-button:not(.collapsed) {
            color: var(--cyan);
        }

        .accordion-body {
            padding: 0 35px 21px 4px;
            color: var(--muted);
            font-size: .91rem;
        }

        .site-footer {
            padding: 73px 0 28px;
            background: #06070c;
            border-top: 1px solid rgba(0, 240, 255, .2);
        }

        .footer-cta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 30px;
            padding-bottom: 58px;
            border-bottom: 1px solid var(--line);
        }

        .footer-cta h2 {
            max-width: 650px;
            margin-bottom: 0;
            font-size: clamp(1.65rem, 3vw, 2.55rem);
        }

        .footer-main {
            display: grid;
            grid-template-columns: 1.35fr 1fr 1fr 1fr;
            gap: 35px;
            padding: 48px 0 42px;
        }

        .footer-brand p {
            max-width: 310px;
            margin: 17px 0 0;
            color: var(--muted);
            font-size: .85rem;
        }

        .footer-column h3 {
            margin-bottom: 16px;
            color: var(--white);
            font-size: .9rem;
            letter-spacing: .01em;
        }

        .footer-column a,
        .footer-column span {
            display: block;
            margin-bottom: 9px;
            color: var(--muted);
            font-size: .82rem;
        }

        .footer-column a:hover {
            color: var(--cyan);
            transform: translateX(3px);
        }

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

        .security-badge {
            padding: 6px 9px;
            color: #b9f7ff;
            border: 1px solid rgba(0, 240, 255, .25);
            background: rgba(0, 240, 255, .05);
            border-radius: 5px;
            font-size: .7rem;
            font-weight: 700;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            color: #69758a;
            font-size: .75rem;
        }

        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1050;
            width: 58px;
            height: 58px;
            display: grid;
            place-items: center;
            color: var(--cyan);
            border: 1px solid transparent;
            border-radius: 15px;
            background:
                linear-gradient(var(--ink), var(--ink)) padding-box,
                linear-gradient(145deg, var(--cyan), var(--blue), #6c2cff) border-box;
            box-shadow: 0 0 16px rgba(0, 240, 255, .5);
            opacity: .72;
            cursor: pointer;
            animation: fabFloat 3.8s ease-in-out infinite;
            transition: opacity .25s ease, transform .25s ease, box-shadow .25s ease;
        }

        .fab::after {
            content: "MỚI";
            position: absolute;
            top: -8px;
            right: -9px;
            padding: 2px 5px;
            color: var(--ink);
            background: var(--cyan);
            border-radius: 4px;
            font-size: .52rem;
            font-weight: 800;
            animation: blink 1.8s ease-in-out infinite;
        }

        .fab i {
            font-size: 1.22rem;
            transition: transform .45s ease;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, .8);
        }

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

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

        @keyframes fabFloat {
            0%, 100% { margin-bottom: 0; }
            50% { margin-bottom: 7px; }
        }

        @keyframes blink {
            0%, 65%, 100% { opacity: 1; }
            75%, 90% { opacity: .28; }
        }

        @media (max-width: 1024px) {
            .container {
                width: min(100% - 34px, 920px);
            }

            .main-nav {
                gap: 0;
            }

            .nav-link {
                padding-left: 9px !important;
                padding-right: 9px !important;
                font-size: .8rem;
            }

            .nav-link::after {
                left: 9px;
                right: 9px;
            }

            .discovery-grid,
            .story-grid {
                gap: 32px;
            }

            .footer-main {
                grid-template-columns: 1.2fr 1fr 1fr;
            }

            .footer-brand {
                grid-column: span 3;
            }
        }

        @media (max-width: 768px) {
            body {
                font-size: 15px;
            }

            .nav-shell {
                min-height: 70px;
                gap: 9px;
            }

            .navbar-toggler {
                display: block;
                order: 3;
            }

            .main-nav {
                position: absolute;
                top: 70px;
                left: 17px;
                right: 17px;
                display: none;
                flex-direction: column;
                align-items: stretch;
                padding: 12px;
                background: rgba(8, 9, 15, .97);
                border: 1px solid var(--line-bright);
                box-shadow: var(--shadow);
            }

            .main-nav.show {
                display: flex;
            }

            .nav-link {
                padding: 12px 14px !important;
            }

            .nav-link::after {
                left: 14px;
                right: auto;
                width: 28px;
                bottom: 5px;
            }

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

            .login-link {
                padding: 8px 5px;
                font-size: .76rem;
            }

            .header-actions .btn-neon {
                padding: 9px 11px;
                font-size: .72rem;
            }

            .hero {
                min-height: 760px;
                padding: 140px 0 48px;
                background-position: 60% center;
            }

            .hero h1 {
                font-size: clamp(2.05rem, 10vw, 3.3rem);
            }

            .hero-proof {
                grid-template-columns: 1fr;
                max-width: 370px;
            }

            .proof-item,
            .proof-item:not(:first-child) {
                min-height: 62px;
                padding: 11px 0;
                border-right: 0;
                border-bottom: 1px solid rgba(157, 239, 255, .2);
            }

            .proof-item:last-child {
                border-bottom: 0;
            }

            .section {
                padding: 78px 0;
            }

            .discovery-grid,
            .launch-layout,
            .story-grid,
            .access-band,
            .faq-layout,
            .news-layout {
                grid-template-columns: 1fr;
            }

            .visual-frame,
            .visual-frame img {
                min-height: 365px;
            }

            .path-panel {
                padding-left: 0;
            }

            .category-grid,
            .review-grid {
                grid-template-columns: 1fr;
            }

            .category-tile {
                min-height: 250px;
            }

            .access-band {
                padding: 34px 27px;
            }

            .footer-cta {
                align-items: flex-start;
                flex-direction: column;
            }

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

            .footer-brand {
                grid-column: span 2;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 5px;
            }
        }

        @media (max-width: 520px) {
            .container {
                width: min(100% - 28px, 480px);
            }

            .brand-copy strong {
                font-size: .9rem;
            }

            .brand-copy small {
                font-size: .55rem;
            }

            .brand-mark {
                width: 33px;
                height: 33px;
                font-size: .85rem;
            }

            .login-link {
                display: none;
            }

            .header-actions .btn-neon {
                padding: 8px 9px;
            }

            .hero {
                min-height: 770px;
                padding-top: 124px;
            }

            .hero-actions {
                align-items: stretch;
                flex-direction: column;
                max-width: 250px;
                margin-bottom: 32px;
            }

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

            .launch-row {
                grid-template-columns: 38px minmax(0, 1fr);
                gap: 12px;
            }

            .launch-row .text-link {
                grid-column: 2;
            }

            .news-item {
                grid-template-columns: 1fr;
                gap: 7px;
            }

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

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

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

            .fab {
                left: 14px;
                bottom: 78px;
            }
        }

/* roulang page: article */
:root {
            --ink: #08090f;
            --navy: #0d111e;
            --navy-soft: #10182b;
            --panel: rgba(18, 27, 48, .76);
            --panel-strong: #121b30;
            --blue: #1769ff;
            --blue-bright: #0052ff;
            --cyan: #00f0ff;
            --cyan-soft: #9defff;
            --white: #ffffff;
            --silver: #cbd5e1;
            --muted: #8996aa;
            --muted-dark: #64748b;
            --line: rgba(151, 178, 220, .19);
            --line-bright: rgba(0, 240, 255, .45);
            --success: #8dffbd;
            --warning: #f8dd79;
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 20px 65px rgba(0, 0, 0, .35);
            --glow: 0 0 28px rgba(0, 240, 255, .2);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            min-width: 320px;
            color: var(--silver);
            background:
                linear-gradient(rgba(10, 17, 31, .92), rgba(8, 9, 15, .98)),
                repeating-linear-gradient(0deg, transparent 0, transparent 39px, rgba(0, 240, 255, .035) 40px),
                repeating-linear-gradient(90deg, transparent 0, transparent 39px, rgba(0, 240, 255, .035) 40px),
                var(--ink);
            font-family: "Be Vietnam Pro", sans-serif;
            font-size: 16px;
            line-height: 1.65;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            z-index: -1;
            pointer-events: none;
            background:
                radial-gradient(circle at 9% 20%, rgba(0, 82, 255, .15), transparent 28%),
                radial-gradient(circle at 88% 62%, rgba(0, 240, 255, .08), transparent 26%);
        }

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

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

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

        button,
        input,
        textarea,
        select,
        .btn {
            font-family: inherit;
        }

        button,
        .btn {
            cursor: pointer;
        }

        .container {
            width: min(1180px, calc(100% - 40px));
            margin: 0 auto;
        }

        .site-header {
            position: fixed;
            z-index: 1000;
            inset: 0 0 auto;
            background: rgba(8, 9, 15, .8);
            border-bottom: 1px solid rgba(0, 240, 255, .14);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .nav-shell {
            min-height: 78px;
            display: flex;
            align-items: center;
            gap: 25px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            min-width: max-content;
        }

        .brand-mark {
            width: 38px;
            height: 38px;
            display: grid;
            place-items: center;
            color: var(--ink);
            background: linear-gradient(145deg, var(--cyan), var(--blue));
            clip-path: polygon(20% 0, 100% 0, 80% 100%, 0 100%);
            font-family: "Space Grotesk", sans-serif;
            font-weight: 800;
            box-shadow: 0 0 18px rgba(0, 240, 255, .5);
        }

        .brand-copy strong,
        .brand-copy small {
            display: block;
        }

        .brand-copy strong {
            color: var(--white);
            font-family: "Space Grotesk", sans-serif;
            font-size: 1.05rem;
            letter-spacing: -.04em;
        }

        .brand-copy small {
            color: var(--cyan);
            font-size: .64rem;
            font-weight: 700;
            letter-spacing: .08em;
            text-transform: uppercase;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
        }

        .nav-link {
            position: relative;
            padding: 10px 14px !important;
            color: var(--muted) !important;
            font-size: .9rem;
            font-weight: 600;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--cyan);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .25s ease;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--white) !important;
        }

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            min-width: max-content;
        }

        .login-link {
            color: var(--silver);
            font-size: .86rem;
            font-weight: 700;
            padding: 11px 10px;
        }

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

        .btn-neon,
        .btn-outline-neon {
            border-radius: 10px;
            font-size: .86rem;
            font-weight: 800;
            padding: 12px 18px;
            letter-spacing: -.01em;
            transition: transform .25s ease, box-shadow .25s ease, background-color .25s ease, color .25s ease;
        }

        .btn-neon {
            color: var(--ink);
            border: 1px solid var(--cyan);
            background: var(--cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, .28);
        }

        .btn-neon:hover {
            color: var(--ink);
            background: #83f7ff;
            transform: translateY(-3px);
            box-shadow: 0 0 30px rgba(0, 240, 255, .55);
        }

        .btn-outline-neon {
            color: var(--cyan);
            border: 1px solid var(--line-bright);
            background: rgba(0, 240, 255, .04);
        }

        .btn-outline-neon:hover {
            color: var(--white);
            background: rgba(0, 240, 255, .12);
            border-color: var(--cyan);
            transform: translateY(-3px);
            box-shadow: var(--glow);
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(0, 240, 255, .7);
            outline-offset: 3px;
        }

        .navbar-toggler {
            display: none;
            color: var(--cyan);
            border: 1px solid var(--line-bright);
            border-radius: 9px;
            padding: 8px 11px;
            background: rgba(0, 240, 255, .06);
        }

        .article-hero {
            position: relative;
            min-height: 330px;
            display: flex;
            align-items: flex-end;
            padding: 132px 0 48px;
            background-image:
                linear-gradient(90deg, rgba(8, 9, 15, .97), rgba(8, 9, 15, .72) 54%, rgba(8, 9, 15, .36)),
                linear-gradient(0deg, rgba(8, 9, 15, .9), transparent 72%),
                url("/assets/images/backpic/back-2.jpg");
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--line);
        }

        .article-hero::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -1px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--cyan), transparent);
            opacity: .7;
        }

        .hero-kicker,
        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--cyan);
            font-size: .72rem;
            font-weight: 800;
            letter-spacing: .14em;
            text-transform: uppercase;
        }

        .hero-kicker::before,
        .section-kicker::before {
            content: "";
            width: 24px;
            height: 2px;
            background: var(--cyan);
            box-shadow: 0 0 10px var(--cyan);
        }

        .hero-note {
            max-width: 690px;
            margin: 14px 0 0;
            color: var(--silver);
            font-size: 1rem;
        }

        .page-main {
            padding: 68px 0 90px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 720px) minmax(260px, 330px);
            justify-content: center;
            align-items: start;
            gap: 58px;
        }

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

        .article-head {
            padding-bottom: 28px;
            border-bottom: 1px solid var(--line);
        }

        .article-category {
            display: inline-flex;
            align-items: center;
            min-height: 30px;
            padding: 5px 11px;
            color: var(--cyan);
            background: rgba(0, 240, 255, .08);
            border: 1px solid rgba(0, 240, 255, .28);
            border-radius: 999px;
            font-size: .72rem;
            font-weight: 800;
            letter-spacing: .05em;
        }

        h1,
        h2,
        h3,
        h4 {
            margin-top: 0;
            color: var(--white);
            font-family: "Space Grotesk", "Be Vietnam Pro", sans-serif;
            line-height: 1.15;
            letter-spacing: -.045em;
        }

        .article-head h1 {
            max-width: 720px;
            margin: 18px 0 17px;
            font-size: clamp(2rem, 4.3vw, 3.65rem);
            font-weight: 700;
        }

        .article-summary {
            margin: 0;
            color: var(--silver);
            font-size: 1.06rem;
            line-height: 1.75;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 17px 24px;
            margin-top: 22px;
            color: var(--muted);
            font-size: .82rem;
        }

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

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

        .article-body {
            padding-top: 34px;
            color: var(--silver);
            font-size: 1.02rem;
            line-height: 1.78;
            overflow-wrap: anywhere;
        }

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

        .article-body h2 {
            margin: 42px 0 17px;
            font-size: clamp(1.45rem, 3vw, 2.05rem);
        }

        .article-body h3 {
            margin: 31px 0 13px;
            color: var(--cyan-soft);
            font-size: 1.3rem;
        }

        .article-body p {
            margin: 0 0 19px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 23px;
            padding-left: 23px;
        }

        .article-body li {
            margin: 8px 0;
            padding-left: 5px;
        }

        .article-body li::marker {
            color: var(--cyan);
        }

        .article-body a {
            color: var(--cyan);
            text-decoration: underline;
            text-decoration-color: rgba(0, 240, 255, .35);
            text-underline-offset: 3px;
        }

        .article-body blockquote {
            margin: 30px 0;
            padding: 21px 24px;
            color: var(--cyan-soft);
            background: rgba(0, 240, 255, .06);
            border-left: 3px solid var(--cyan);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }

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

        .article-body table {
            width: 100%;
            margin: 25px 0;
            border-collapse: collapse;
            overflow: hidden;
            border: 1px solid var(--line);
        }

        .article-body th,
        .article-body td {
            padding: 12px 14px;
            text-align: left;
            border-bottom: 1px solid var(--line);
        }

        .article-body th {
            color: var(--white);
            background: rgba(0, 82, 255, .2);
        }

        .article-body code {
            color: var(--cyan-soft);
            background: rgba(0, 240, 255, .08);
            padding: 2px 6px;
            border-radius: 5px;
        }

        .article-source {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 15px;
            margin-top: 35px;
            padding-top: 20px;
            border-top: 1px solid var(--line);
            color: var(--muted);
            font-size: .8rem;
        }

        .sidebar {
            position: sticky;
            top: 105px;
        }

        .side-panel {
            position: relative;
            margin-bottom: 22px;
            padding: 22px;
            background: linear-gradient(145deg, rgba(18, 27, 48, .88), rgba(12, 18, 34, .76));
            border: 1px solid var(--line);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .side-panel::before {
            content: "";
            position: absolute;
            top: 0;
            left: 22px;
            right: 22px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--cyan), transparent);
        }

        .side-panel h2,
        .side-panel h3 {
            margin-bottom: 14px;
            font-size: 1.12rem;
            letter-spacing: -.02em;
        }

        .side-panel p {
            margin: 0;
            color: var(--muted);
            font-size: .88rem;
            line-height: 1.7;
        }

        .side-image {
            width: calc(100% + 44px);
            height: 160px;
            margin: -22px -22px 20px;
            object-fit: cover;
            opacity: .84;
            border-bottom: 1px solid var(--line);
        }

        .quick-list {
            display: grid;
            gap: 9px;
            margin: 17px 0 0;
            padding: 0;
            list-style: none;
        }

        .quick-list li a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 11px 12px;
            color: var(--silver);
            background: rgba(255, 255, 255, .025);
            border: 1px solid transparent;
            border-radius: 10px;
            font-size: .86rem;
            font-weight: 600;
        }

        .quick-list li a i {
            color: var(--cyan);
            font-size: .76rem;
        }

        .quick-list li a:hover {
            color: var(--white);
            background: rgba(0, 240, 255, .08);
            border-color: rgba(0, 240, 255, .28);
            transform: translateX(3px);
        }

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

        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 9px;
            color: var(--success);
            background: rgba(141, 255, 189, .06);
            border: 1px solid rgba(141, 255, 189, .2);
            border-radius: 8px;
            font-size: .7rem;
            font-weight: 700;
        }

        .trust-badge i {
            font-size: .72rem;
        }

        .not-found {
            padding: 45px 30px;
            text-align: left;
            background: linear-gradient(145deg, rgba(18, 27, 48, .9), rgba(11, 17, 31, .82));
            border: 1px solid var(--line-bright);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        .not-found-icon {
            width: 50px;
            height: 50px;
            display: grid;
            place-items: center;
            margin-bottom: 19px;
            color: var(--cyan);
            background: rgba(0, 240, 255, .09);
            border: 1px solid rgba(0, 240, 255, .25);
            border-radius: 14px;
            font-size: 1.2rem;
        }

        .not-found h1 {
            margin-bottom: 12px;
            font-size: 2rem;
        }

        .not-found p {
            margin-bottom: 22px;
            color: var(--muted);
        }

        .feature-strip {
            margin-top: 75px;
            padding: 26px 0;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .feature-strip-inner {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 13px;
        }

        .feature-icon {
            flex: 0 0 38px;
            width: 38px;
            height: 38px;
            display: grid;
            place-items: center;
            color: var(--cyan);
            background: rgba(0, 240, 255, .08);
            border: 1px solid rgba(0, 240, 255, .23);
            border-radius: 10px;
        }

        .feature-item strong {
            display: block;
            margin-bottom: 2px;
            color: var(--white);
            font-size: .9rem;
        }

        .feature-item span {
            display: block;
            color: var(--muted);
            font-size: .78rem;
            line-height: 1.5;
        }

        .faq-section {
            padding: 82px 0 78px;
            background:
                linear-gradient(180deg, rgba(13, 17, 30, .22), rgba(13, 17, 30, .8)),
                url("/assets/images/backpic/back-3.jpg") center / cover;
            border-top: 1px solid var(--line);
        }

        .faq-layout {
            display: grid;
            grid-template-columns: .78fr 1.22fr;
            gap: 70px;
            align-items: start;
        }

        .section-heading h2 {
            max-width: 430px;
            margin: 15px 0 15px;
            font-size: clamp(1.8rem, 3.5vw, 2.8rem);
        }

        .section-heading p {
            max-width: 440px;
            margin: 0;
            color: var(--muted);
        }

        .faq-list {
            display: grid;
            gap: 10px;
        }

        .faq-item {
            background: rgba(12, 19, 35, .74);
            border: 1px solid var(--line);
            border-radius: 13px;
            transition: border-color .25s ease, background-color .25s ease;
        }

        .faq-item[open] {
            background: rgba(18, 31, 55, .9);
            border-color: rgba(0, 240, 255, .42);
        }

        .faq-item summary {
            position: relative;
            padding: 18px 48px 18px 20px;
            color: var(--white);
            cursor: pointer;
            list-style: none;
            font-size: .94rem;
            font-weight: 700;
        }

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

        .faq-item summary::after {
            content: "\f078";
            position: absolute;
            top: 18px;
            right: 19px;
            color: var(--cyan);
            font-family: "Font Awesome 6 Free";
            font-size: .75rem;
            font-weight: 900;
            transition: transform .25s ease;
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 20px 18px;
            color: var(--muted);
            font-size: .88rem;
            line-height: 1.7;
        }

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

        .cta-band {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 35px;
            padding: 42px 48px;
            background:
                linear-gradient(120deg, rgba(0, 82, 255, .22), rgba(0, 240, 255, .08)),
                rgba(18, 27, 48, .78);
            border: 1px solid rgba(0, 240, 255, .42);
            border-radius: var(--radius);
            box-shadow: var(--glow), var(--shadow);
            overflow: hidden;
        }

        .cta-band::after {
            content: "";
            position: absolute;
            width: 260px;
            height: 260px;
            right: -100px;
            top: -135px;
            border: 1px solid rgba(0, 240, 255, .2);
            border-radius: 50%;
            box-shadow: 0 0 0 18px rgba(0, 240, 255, .04), 0 0 0 38px rgba(0, 240, 255, .025);
        }

        .cta-band h2 {
            max-width: 630px;
            margin: 12px 0 10px;
            font-size: clamp(1.55rem, 3vw, 2.45rem);
        }

        .cta-band p {
            max-width: 620px;
            margin: 0;
            color: var(--silver);
        }

        .cta-actions {
            position: relative;
            z-index: 1;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            min-width: max-content;
        }

        .site-footer {
            padding: 34px 0 30px;
            background: rgba(4, 7, 13, .88);
            border-top: 1px solid rgba(0, 240, 255, .16);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 35px;
            padding-bottom: 28px;
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 13px;
        }

        .footer-brand .brand-mark {
            width: 32px;
            height: 32px;
            font-size: .85rem;
        }

        .footer-brand strong {
            color: var(--white);
            font-family: "Space Grotesk", sans-serif;
            font-size: 1rem;
        }

        .footer-copy {
            max-width: 360px;
            margin: 0;
            color: var(--muted);
            font-size: .82rem;
            line-height: 1.7;
        }

        .footer-title {
            margin: 5px 0 13px;
            color: var(--white);
            font-size: .84rem;
            font-weight: 800;
        }

        .footer-links {
            display: grid;
            gap: 8px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .footer-links a {
            color: var(--muted);
            font-size: .8rem;
        }

        .footer-links a:hover {
            color: var(--cyan);
            transform: translateX(3px);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-top: 21px;
            color: var(--muted-dark);
            border-top: 1px solid var(--line);
            font-size: .74rem;
        }

        .review-line {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: var(--silver);
        }

        .review-avatar {
            width: 27px;
            height: 27px;
            display: grid;
            place-items: center;
            color: var(--ink);
            background: linear-gradient(135deg, var(--cyan), var(--blue));
            border-radius: 50%;
            font-size: .76rem;
            font-weight: 800;
        }

        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            display: grid;
            place-items: center;
            color: var(--cyan);
            background: rgba(5, 11, 22, .86);
            border: 1px solid var(--cyan);
            border-radius: 14px;
            box-shadow: 0 0 15px rgba(0, 240, 255, .5);
            opacity: .7;
            transition: opacity .25s ease, transform .25s ease, box-shadow .25s ease, color .25s ease;
        }

        .fab-support::before {
            content: "";
            position: absolute;
            inset: -1px;
            border-radius: inherit;
            border: 1px solid transparent;
            border-top-color: var(--blue);
            border-right-color: var(--cyan);
            animation: rotateGlow 4s linear infinite;
            pointer-events: none;
        }

        .fab-support::after {
            content: "MỚI";
            position: absolute;
            top: -9px;
            right: -10px;
            padding: 1px 5px;
            color: var(--ink);
            background: var(--cyan);
            border-radius: 4px;
            font-size: .52rem;
            font-weight: 800;
            animation: neonBlink 2.2s ease-in-out infinite;
        }

        .fab-support:hover {
            color: var(--white);
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 26px rgba(0, 240, 255, .8);
        }

        .fab-support:hover i {
            animation: flicker .45s ease;
        }

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

        @keyframes rotateGlow {
            to {
                transform: rotate(360deg);
            }
        }

        @keyframes neonBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: .42; }
        }

        @keyframes flicker {
            0%, 100% { opacity: 1; transform: scale(1); }
            35% { opacity: .25; transform: scale(.8); }
            70% { opacity: 1; transform: scale(1.12); }
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: minmax(0, 700px) 270px;
                gap: 32px;
            }

            .nav-shell {
                gap: 12px;
            }

            .main-nav {
                gap: 0;
            }

            .nav-link {
                padding-left: 10px !important;
                padding-right: 10px !important;
            }

            .nav-link::after {
                left: 10px;
                right: 10px;
            }

            .brand-copy strong {
                font-size: .94rem;
            }

            .brand-copy small {
                font-size: .56rem;
            }

            .cta-band {
                padding: 36px;
            }
        }

        @media (max-width: 768px) {
            .container {
                width: min(100% - 30px, 680px);
            }

            .nav-shell {
                min-height: 70px;
            }

            .navbar-toggler {
                display: block;
                order: 4;
            }

            .main-nav {
                position: absolute;
                top: calc(100% + 1px);
                left: 15px;
                right: 15px;
                display: none;
                flex-direction: column;
                align-items: stretch;
                margin: 0;
                padding: 10px;
                background: rgba(8, 9, 15, .97);
                border: 1px solid var(--line-bright);
                border-radius: 0 0 14px 14px;
                box-shadow: var(--shadow);
            }

            .main-nav.is-open {
                display: flex;
            }

            .nav-link {
                padding: 12px 14px !important;
            }

            .nav-link::after {
                left: 14px;
                right: auto;
                width: 30px;
                bottom: 7px;
            }

            .header-actions {
                margin-left: auto;
                gap: 2px;
            }

            .login-link {
                padding: 9px 7px;
                font-size: .76rem;
            }

            .btn-neon,
            .btn-outline-neon {
                padding: 10px 12px;
                font-size: .74rem;
            }

            .article-hero {
                min-height: 270px;
                padding: 112px 0 36px;
            }

            .page-main {
                padding: 48px 0 65px;
            }

            .article-layout {
                display: block;
            }

            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 15px;
                margin-top: 45px;
            }

            .side-panel {
                margin-bottom: 0;
            }

            .side-panel:first-child {
                grid-column: 1 / -1;
            }

            .feature-strip {
                margin-top: 52px;
            }

            .feature-strip-inner {
                grid-template-columns: 1fr;
                gap: 17px;
            }

            .faq-section {
                padding: 60px 0;
            }

            .faq-layout {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .cta-band {
                display: block;
                padding: 30px 25px;
            }

            .cta-actions {
                margin-top: 24px;
                min-width: 0;
            }

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

            .footer-grid > :first-child {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }

            .container {
                width: calc(100% - 28px);
            }

            .brand {
                gap: 7px;
            }

            .brand-mark {
                width: 32px;
                height: 32px;
                font-size: .82rem;
            }

            .brand-copy strong {
                font-size: .8rem;
            }

            .brand-copy small {
                display: none;
            }

            .header-actions {
                gap: 0;
            }

            .login-link {
                font-size: .7rem;
            }

            .header-actions .btn-neon {
                padding: 9px 9px;
                font-size: .66rem;
            }

            .navbar-toggler {
                padding: 7px 9px;
                font-size: .85rem;
            }

            .article-head h1 {
                font-size: 2rem;
            }

            .article-summary {
                font-size: .96rem;
            }

            .article-body {
                padding-top: 25px;
                font-size: .96rem;
            }

            .article-body h2 {
                margin-top: 32px;
            }

            .sidebar {
                display: block;
            }

            .side-panel {
                margin-bottom: 15px;
            }

            .feature-strip-inner {
                gap: 15px;
            }

            .cta-actions {
                display: grid;
            }

            .cta-actions .btn {
                width: 100%;
                text-align: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 23px;
            }

            .footer-grid > :first-child {
                grid-column: auto;
            }

            .footer-bottom {
                align-items: flex-start;
                flex-direction: column;
                gap: 13px;
            }

            .fab-support {
                left: 14px;
                bottom: 78px;
            }
        }

/* roulang page: category1 */
:root {
            --ink: #08090f;
            --navy: #0d111e;
            --navy-light: #121b30;
            --panel: rgba(18, 27, 48, .76);
            --panel-solid: #121b30;
            --blue: #1769ff;
            --blue-bright: #0052ff;
            --cyan: #00f0ff;
            --cyan-soft: #9defff;
            --white: #ffffff;
            --silver: #cbd5e1;
            --muted: #8996aa;
            --muted-light: #aebbd0;
            --line: rgba(151, 178, 220, .19);
            --line-bright: rgba(0, 240, 255, .45);
            --success: #62f6b0;
            --danger: #ff6f91;
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 20px 65px rgba(0, 0, 0, .35);
            --glow: 0 0 28px rgba(0, 240, 255, .2);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            min-width: 320px;
            color: var(--silver);
            background:
                linear-gradient(rgba(10, 17, 31, .92), rgba(8, 9, 15, .98)),
                repeating-linear-gradient(0deg, transparent 0, transparent 39px, rgba(0, 240, 255, .035) 40px),
                repeating-linear-gradient(90deg, transparent 0, transparent 39px, rgba(0, 240, 255, .035) 40px),
                var(--ink);
            font-family: "Be Vietnam Pro", sans-serif;
            font-size: 16px;
            line-height: 1.65;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            opacity: .3;
            background:
                radial-gradient(circle at 8% 12%, rgba(0, 240, 255, .12), transparent 25%),
                radial-gradient(circle at 90% 42%, rgba(23, 105, 255, .13), transparent 28%);
            z-index: -1;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        button,
        .btn {
            cursor: pointer;
        }

        .container {
            width: min(1180px, calc(100% - 40px));
            margin: 0 auto;
        }

        .site-header {
            position: fixed;
            z-index: 1000;
            inset: 0 0 auto;
            background: rgba(8, 9, 15, .8);
            border-bottom: 1px solid rgba(0, 240, 255, .14);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .nav-shell {
            min-height: 78px;
            display: flex;
            align-items: center;
            gap: 25px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            min-width: max-content;
        }

        .brand-mark {
            width: 38px;
            height: 38px;
            display: grid;
            place-items: center;
            color: var(--ink);
            background: linear-gradient(145deg, var(--cyan), var(--blue));
            clip-path: polygon(20% 0, 100% 0, 80% 100%, 0 100%);
            font-family: "Space Grotesk", sans-serif;
            font-weight: 800;
            box-shadow: 0 0 18px rgba(0, 240, 255, .5);
        }

        .brand-copy strong,
        .brand-copy small {
            display: block;
        }

        .brand-copy strong {
            color: var(--white);
            font-family: "Space Grotesk", sans-serif;
            font-size: 1.05rem;
            letter-spacing: -.04em;
        }

        .brand-copy small {
            color: var(--cyan);
            font-size: .64rem;
            font-weight: 700;
            letter-spacing: .08em;
            text-transform: uppercase;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
        }

        .nav-link {
            position: relative;
            padding: 10px 14px !important;
            color: var(--muted) !important;
            font-size: .9rem;
            font-weight: 600;
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--cyan);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .25s ease;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--white) !important;
        }

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            min-width: max-content;
        }

        .login-link {
            color: var(--muted-light);
            font-size: .86rem;
            font-weight: 700;
            padding: 11px 9px;
        }

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

        .btn-neon,
        .btn-outline-neon {
            border-radius: 10px;
            font-size: .86rem;
            font-weight: 800;
            padding: 12px 18px;
            letter-spacing: -.01em;
            transition: transform .25s ease, box-shadow .25s ease, background-color .25s ease, color .25s ease;
        }

        .btn-neon {
            color: var(--ink);
            border: 1px solid var(--cyan);
            background: var(--cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, .28);
        }

        .btn-neon:hover {
            color: var(--ink);
            background: #83f7ff;
            transform: translateY(-3px);
            box-shadow: 0 0 30px rgba(0, 240, 255, .55);
        }

        .btn-neon:active,
        .btn-outline-neon:active {
            transform: translateY(1px) scale(.98);
        }

        .btn-outline-neon {
            color: var(--cyan);
            border: 1px solid var(--line-bright);
            background: rgba(0, 240, 255, .04);
        }

        .btn-outline-neon:hover {
            color: var(--white);
            background: rgba(0, 240, 255, .12);
            border-color: var(--cyan);
            transform: translateY(-3px);
            box-shadow: var(--glow);
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(0, 240, 255, .7);
            outline-offset: 3px;
        }

        .navbar-toggler {
            display: none;
            color: var(--cyan);
            border: 1px solid var(--line-bright);
            border-radius: 9px;
            padding: 8px 11px;
            background: rgba(0, 240, 255, .06);
        }

        .page-banner {
            position: relative;
            min-height: 500px;
            display: flex;
            align-items: flex-end;
            padding: 150px 0 70px;
            background-image:
                linear-gradient(90deg, rgba(8, 9, 15, .97) 0%, rgba(8, 9, 15, .79) 50%, rgba(8, 9, 15, .34) 100%),
                linear-gradient(0deg, rgba(8, 9, 15, .98) 0%, transparent 55%),
                url("/assets/images/backpic/back-2.jpg");
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid rgba(0, 240, 255, .14);
        }

        .page-banner::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(112deg, transparent 55%, rgba(0, 240, 255, .08));
            pointer-events: none;
        }

        .banner-content {
            position: relative;
            z-index: 1;
            max-width: 820px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: var(--cyan);
            font-size: .75rem;
            font-weight: 800;
            letter-spacing: .16em;
            text-transform: uppercase;
            margin-bottom: 17px;
        }

        .eyebrow::before {
            content: "";
            width: 30px;
            height: 2px;
            background: var(--cyan);
            box-shadow: 0 0 12px var(--cyan);
        }

        .breadcrumb-line {
            color: var(--muted);
            font-size: .8rem;
            margin-bottom: 27px;
        }

        .breadcrumb-line a:hover {
            color: var(--cyan);
        }

        .breadcrumb-line span {
            color: var(--cyan);
            margin: 0 8px;
        }

        h1,
        h2,
        h3 {
            margin-top: 0;
            color: var(--white);
            font-family: "Space Grotesk", "Be Vietnam Pro", sans-serif;
            line-height: 1.15;
            letter-spacing: -.045em;
        }

        h1 {
            max-width: 930px;
            margin-bottom: 21px;
            font-size: clamp(2.15rem, 5vw, 4.25rem);
            font-weight: 700;
        }

        h2 {
            font-size: clamp(1.8rem, 3vw, 2.7rem);
            margin-bottom: 15px;
        }

        h3 {
            font-size: 1.18rem;
            letter-spacing: -.025em;
            margin-bottom: 10px;
        }

        .banner-content > p {
            max-width: 730px;
            color: var(--silver);
            font-size: 1.03rem;
            margin: 0;
        }

        .section {
            padding: 100px 0;
        }

        .section-tight {
            padding: 74px 0;
        }

        .section-heading {
            max-width: 680px;
            margin-bottom: 45px;
        }

        .section-heading p {
            color: var(--muted-light);
            margin: 0;
            max-width: 620px;
        }

        .section-heading.split-heading {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            gap: 35px;
            max-width: none;
        }

        .section-heading.split-heading > p {
            max-width: 440px;
        }

        .glass-panel {
            background: linear-gradient(145deg, rgba(26, 43, 75, .78), rgba(11, 17, 31, .78));
            border: 1px solid var(--line);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .platform-layout {
            display: grid;
            grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
            gap: 48px;
            align-items: center;
        }

        .visual-frame {
            position: relative;
            overflow: hidden;
            min-height: 465px;
            border-radius: 24px;
            border: 1px solid var(--line-bright);
            background: var(--navy);
            box-shadow: var(--shadow), 0 0 35px rgba(0, 240, 255, .12);
        }

        .visual-frame img {
            width: 100%;
            height: 100%;
            min-height: 465px;
            object-fit: cover;
            opacity: .82;
        }

        .visual-frame::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(8, 9, 15, .9), transparent 58%);
        }

        .visual-caption {
            position: absolute;
            z-index: 1;
            left: 28px;
            right: 28px;
            bottom: 25px;
        }

        .visual-caption strong {
            display: block;
            color: var(--white);
            font-family: "Space Grotesk", sans-serif;
            font-size: 1.5rem;
            margin-bottom: 4px;
        }

        .visual-caption span {
            color: var(--cyan-soft);
            font-size: .86rem;
        }

        .platform-copy {
            padding: 8px 0;
        }

        .platform-copy > p {
            color: var(--muted-light);
            margin-bottom: 25px;
        }

        .platform-list {
            display: grid;
            gap: 12px;
            margin: 0 0 28px;
            padding: 0;
            list-style: none;
        }

        .platform-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            padding: 16px 17px;
            border-left: 2px solid var(--blue);
            background: rgba(18, 27, 48, .52);
            transition: border-color .25s ease, background-color .25s ease, transform .25s ease;
        }

        .platform-item:hover {
            transform: translateX(5px);
            border-color: var(--cyan);
            background: rgba(0, 240, 255, .08);
        }

        .platform-icon {
            flex: 0 0 38px;
            width: 38px;
            height: 38px;
            display: grid;
            place-items: center;
            color: var(--cyan);
            border: 1px solid var(--line-bright);
            border-radius: 10px;
            background: rgba(0, 240, 255, .07);
        }

        .platform-item strong {
            display: block;
            color: var(--white);
            font-size: .98rem;
            margin-bottom: 2px;
        }

        .platform-item span {
            display: block;
            color: var(--muted);
            font-size: .83rem;
        }

        .button-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .feature-area {
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            background: rgba(13, 17, 30, .55);
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1px;
            background: var(--line);
            border: 1px solid var(--line);
        }

        .feature-item {
            min-height: 210px;
            padding: 30px 24px;
            background: rgba(13, 17, 30, .94);
            transition: background-color .25s ease, transform .25s ease;
        }

        .feature-item:hover {
            position: relative;
            z-index: 1;
            background: linear-gradient(145deg, rgba(22, 45, 84, .95), rgba(13, 17, 30, .95));
            transform: translateY(-4px);
        }

        .feature-number {
            display: block;
            color: var(--cyan);
            font-family: "Space Grotesk", sans-serif;
            font-size: .75rem;
            font-weight: 700;
            letter-spacing: .12em;
            margin-bottom: 31px;
        }

        .feature-item h3 {
            font-size: 1.08rem;
        }

        .feature-item p {
            color: var(--muted);
            font-size: .88rem;
            margin: 0;
        }

        .use-layout {
            display: grid;
            grid-template-columns: .8fr 1.2fr;
            gap: 62px;
            align-items: start;
        }

        .use-intro {
            position: sticky;
            top: 115px;
        }

        .use-intro p {
            color: var(--muted-light);
            margin-bottom: 24px;
        }

        .signal-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--success);
            border: 1px solid rgba(98, 246, 176, .3);
            border-radius: 30px;
            padding: 8px 12px;
            font-size: .75rem;
            font-weight: 700;
            background: rgba(98, 246, 176, .06);
        }

        .signal-badge i {
            font-size: .48rem;
            text-shadow: 0 0 10px var(--success);
        }

        .use-rows {
            display: grid;
            gap: 18px;
        }

        .use-row {
            display: grid;
            grid-template-columns: 55px 1fr auto;
            align-items: center;
            gap: 18px;
            padding: 22px 24px;
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            background: var(--panel);
            transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
        }

        .use-row:hover {
            border-color: var(--line-bright);
            box-shadow: var(--glow);
            transform: translateX(5px);
        }

        .use-row-icon {
            width: 45px;
            height: 45px;
            display: grid;
            place-items: center;
            color: var(--cyan);
            font-size: 1.15rem;
            border-radius: 12px;
            background: rgba(0, 240, 255, .09);
        }

        .use-row h3 {
            margin-bottom: 3px;
            font-size: 1rem;
        }

        .use-row p {
            color: var(--muted);
            font-size: .85rem;
            margin: 0;
        }

        .row-arrow {
            color: var(--muted);
            font-size: .85rem;
        }

        .process-section {
            position: relative;
            background: linear-gradient(110deg, rgba(13, 26, 52, .82), rgba(8, 9, 15, .58));
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
            position: relative;
        }

        .process-grid::before {
            content: "";
            position: absolute;
            top: 29px;
            left: 9%;
            right: 9%;
            height: 1px;
            background: linear-gradient(90deg, var(--blue), var(--cyan), var(--blue));
            opacity: .55;
        }

        .process-step {
            position: relative;
            z-index: 1;
        }

        .step-index {
            width: 58px;
            height: 58px;
            display: grid;
            place-items: center;
            color: var(--ink);
            font-family: "Space Grotesk", sans-serif;
            font-weight: 800;
            border-radius: 50%;
            background: linear-gradient(145deg, var(--cyan), #75d9ff);
            box-shadow: 0 0 22px rgba(0, 240, 255, .32);
            margin-bottom: 22px;
        }

        .process-step h3 {
            font-size: 1.05rem;
        }

        .process-step p {
            color: var(--muted);
            font-size: .86rem;
            margin: 0;
            max-width: 230px;
        }

        .proof-layout {
            display: grid;
            grid-template-columns: 1.15fr .85fr;
            gap: 48px;
            align-items: stretch;
        }

        .proof-image {
            min-height: 330px;
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: var(--radius);
        }

        .proof-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: .8;
            transition: transform .45s ease, opacity .45s ease;
        }

        .proof-image:hover img {
            transform: scale(1.04);
            opacity: 1;
        }

        .proof-panel {
            padding: 33px;
        }

        .proof-panel h2 {
            font-size: 2rem;
        }

        .proof-panel > p {
            color: var(--muted-light);
            font-size: .92rem;
        }

        .metric-list {
            display: grid;
            gap: 0;
            margin-top: 25px;
        }

        .metric-line {
            display: flex;
            justify-content: space-between;
            gap: 15px;
            padding: 15px 0;
            border-bottom: 1px solid var(--line);
            font-size: .86rem;
        }

        .metric-line:last-child {
            border-bottom: 0;
        }

        .metric-line strong {
            color: var(--cyan);
            font-family: "Space Grotesk", sans-serif;
        }

        .payment-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 9px;
            margin-top: 25px;
        }

        .payment-badge {
            padding: 6px 10px;
            color: var(--muted-light);
            border: 1px solid var(--line);
            border-radius: 7px;
            background: rgba(255,255,255,.03);
            font-size: .72rem;
            font-weight: 700;
        }

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

        .faq-intro p {
            color: var(--muted-light);
            margin-bottom: 24px;
        }

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

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

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            padding: 20px 0;
            color: var(--white);
            text-align: left;
            font-size: .97rem;
            font-weight: 700;
            background: transparent;
            border: 0;
        }

        .faq-question i {
            color: var(--cyan);
            font-size: .8rem;
            transition: transform .25s ease;
        }

        .faq-question[aria-expanded="true"] i {
            transform: rotate(45deg);
        }

        .faq-answer {
            color: var(--muted);
            font-size: .88rem;
            padding: 0 35px 20px 0;
        }

        .cta-section {
            padding: 90px 0;
        }

        .cta-box {
            position: relative;
            overflow: hidden;
            padding: 58px 65px;
            text-align: center;
            border: 1px solid var(--line-bright);
            border-radius: 25px;
            background:
                linear-gradient(105deg, rgba(0, 82, 255, .24), rgba(0, 240, 255, .08)),
                rgba(18, 27, 48, .8);
            box-shadow: var(--shadow), 0 0 40px rgba(0, 240, 255, .1);
        }

        .cta-box::before,
        .cta-box::after {
            content: "";
            position: absolute;
            width: 180px;
            height: 180px;
            border: 1px solid rgba(0, 240, 255, .2);
            transform: rotate(45deg);
        }

        .cta-box::before {
            left: -110px;
            top: -110px;
        }

        .cta-box::after {
            right: -110px;
            bottom: -110px;
        }

        .cta-box h2,
        .cta-box p,
        .cta-box .button-row {
            position: relative;
            z-index: 1;
        }

        .cta-box h2 {
            max-width: 700px;
            margin: 0 auto 13px;
        }

        .cta-box p {
            max-width: 650px;
            margin: 0 auto 26px;
            color: var(--muted-light);
        }

        .cta-box .button-row {
            justify-content: center;
        }

        .site-footer {
            padding: 52px 0 22px;
            border-top: 1px solid rgba(0, 240, 255, .16);
            background: rgba(5, 8, 15, .88);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 1fr 1fr;
            gap: 45px;
            padding-bottom: 36px;
        }

        .footer-brand p {
            max-width: 360px;
            color: var(--muted);
            font-size: .86rem;
            margin: 17px 0 0;
        }

        .footer-title {
            color: var(--white);
            font-family: "Space Grotesk", sans-serif;
            font-size: .95rem;
            margin-bottom: 15px;
        }

        .footer-links {
            display: grid;
            gap: 9px;
            color: var(--muted);
            font-size: .84rem;
        }

        .footer-links a:hover {
            color: var(--cyan);
            transform: translateX(3px);
        }

        .footer-review {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--muted-light);
            font-size: .8rem;
            padding: 14px 0;
            border-top: 1px solid var(--line);
        }

        .review-avatar {
            width: 30px;
            height: 30px;
            display: grid;
            place-items: center;
            color: var(--ink);
            font-weight: 800;
            border-radius: 50%;
            background: linear-gradient(145deg, var(--cyan), var(--blue));
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            padding-top: 18px;
            color: var(--muted);
            border-top: 1px solid var(--line);
            font-size: .75rem;
        }

        .footer-bottom strong {
            color: var(--cyan-soft);
            font-weight: 600;
        }

        .floating-help {
            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: 15px;
            background: rgba(0, 0, 0, .68);
            box-shadow: 0 0 15px rgba(0, 240, 255, .5);
            opacity: .72;
            backdrop-filter: blur(12px);
            animation: floatHelp 3s ease-in-out infinite;
        }

        .floating-help::before {
            content: "MỚI";
            position: absolute;
            top: -10px;
            right: -9px;
            padding: 2px 5px;
            color: var(--ink);
            border-radius: 4px;
            background: var(--cyan);
            font-size: .52rem;
            font-weight: 800;
            animation: blinkTag 1.8s ease-in-out infinite;
        }

        .floating-help:hover {
            color: var(--white);
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 29px rgba(0, 240, 255, .82);
        }

        .floating-help:hover i {
            animation: flicker .45s ease;
        }

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

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

        @keyframes flicker {
            0%, 100% { opacity: 1; transform: scale(1); }
            40% { opacity: .35; transform: scale(.88); }
            70% { opacity: 1; transform: scale(1.12); }
        }

        @media (max-width: 1024px) {
            .nav-shell {
                gap: 15px;
            }

            .brand-copy strong {
                font-size: .96rem;
            }

            .main-nav {
                gap: 0;
            }

            .nav-link {
                padding-left: 9px !important;
                padding-right: 9px !important;
                font-size: .82rem;
            }

            .platform-layout,
            .proof-layout {
                gap: 32px;
            }

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

        @media (max-width: 768px) {
            .container {
                width: min(100% - 32px, 620px);
            }

            .nav-shell {
                min-height: 70px;
                position: relative;
            }

            .brand-copy small {
                font-size: .56rem;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: 69px;
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                padding: 10px;
                border: 1px solid var(--line-bright);
                border-radius: 0 0 15px 15px;
                background: rgba(8, 9, 15, .97);
                box-shadow: var(--shadow);
            }

            .main-nav.is-open {
                display: flex;
            }

            .nav-link {
                padding: 12px 14px !important;
            }

            .nav-link::after {
                left: 14px;
                right: auto;
                width: 32px;
                bottom: 5px;
            }

            .header-actions {
                margin-left: auto;
                gap: 2px;
            }

            .login-link {
                padding: 9px 6px;
                font-size: .76rem;
            }

            .header-actions .btn-neon {
                padding: 10px 11px;
                font-size: .73rem;
            }

            .navbar-toggler {
                display: block;
                margin-left: 4px;
            }

            .page-banner {
                min-height: 530px;
                padding: 130px 0 55px;
                background-position: 62% center;
            }

            h1 {
                font-size: clamp(2rem, 8vw, 3.3rem);
            }

            .section,
            .section-tight {
                padding: 70px 0;
            }

            .platform-layout,
            .proof-layout,
            .use-layout,
            .faq-layout {
                grid-template-columns: 1fr;
            }

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

            .use-intro {
                position: static;
            }

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

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 35px 25px;
            }

            .process-grid::before {
                display: none;
            }

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

            .section-heading.split-heading > p {
                margin-top: 18px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }

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

            .cta-box {
                padding: 46px 25px;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }

            .container {
                width: calc(100% - 28px);
            }

            .brand {
                gap: 7px;
            }

            .brand-mark {
                width: 33px;
                height: 33px;
                font-size: .82rem;
            }

            .brand-copy strong {
                font-size: .8rem;
            }

            .brand-copy small {
                font-size: .48rem;
                letter-spacing: .04em;
            }

            .header-actions .login-link {
                display: none;
            }

            .header-actions .btn-neon {
                padding: 9px 9px;
                font-size: .68rem;
            }

            .page-banner {
                min-height: 585px;
                padding-top: 125px;
            }

            .breadcrumb-line {
                margin-bottom: 19px;
                font-size: .72rem;
            }

            h1 {
                font-size: 2.15rem;
            }

            .banner-content > p {
                font-size: .92rem;
            }

            .button-row {
                display: grid;
                grid-template-columns: 1fr;
            }

            .button-row .btn {
                width: 100%;
            }

            .feature-grid,
            .process-grid {
                grid-template-columns: 1fr;
            }

            .feature-item {
                min-height: auto;
                padding: 24px 20px;
            }

            .feature-number {
                margin-bottom: 18px;
            }

            .use-row {
                grid-template-columns: 42px 1fr;
                padding: 18px 16px;
                gap: 12px;
            }

            .row-arrow {
                display: none;
            }

            .proof-panel {
                padding: 25px 20px;
            }

            .cta-box {
                padding: 38px 18px;
                border-radius: 19px;
            }

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

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

            .footer-bottom {
                display: block;
            }

            .footer-bottom span {
                display: block;
                margin-top: 7px;
            }

            .floating-help {
                left: 14px;
                bottom: 78px;
            }
        }

/* roulang page: category2 */
:root {
            --ink: #08090f;
            --navy: #0d111e;
            --navy-2: #10182b;
            --panel: rgba(18, 27, 48, .76);
            --panel-strong: #121b30;
            --blue: #1769ff;
            --blue-bright: #0052ff;
            --cyan: #00f0ff;
            --cyan-soft: #9defff;
            --white: #ffffff;
            --silver: #cbd5e1;
            --muted: #8996aa;
            --line: rgba(151, 178, 220, .19);
            --line-bright: rgba(0, 240, 255, .45);
            --success: #81f99a;
            --warning: #ffda72;
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 20px 65px rgba(0, 0, 0, .35);
            --glow: 0 0 28px rgba(0, 240, 255, .2);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            min-width: 320px;
            margin: 0;
            color: var(--silver);
            background:
                linear-gradient(rgba(10, 17, 31, .92), rgba(8, 9, 15, .98)),
                repeating-linear-gradient(0deg, transparent 0, transparent 39px, rgba(0, 240, 255, .035) 40px),
                repeating-linear-gradient(90deg, transparent 0, transparent 39px, rgba(0, 240, 255, .035) 40px),
                var(--ink);
            font-family: "Be Vietnam Pro", sans-serif;
            font-size: 16px;
            line-height: 1.65;
            overflow-x: hidden;
        }

        body::before {
            position: fixed;
            z-index: -1;
            inset: 0;
            content: "";
            pointer-events: none;
            opacity: .24;
            background:
                radial-gradient(circle at 9% 18%, rgba(0, 240, 255, .11), transparent 24%),
                radial-gradient(circle at 89% 68%, rgba(23, 105, 255, .12), transparent 28%);
        }

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

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

        button,
        input,
        select {
            font: inherit;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: min(1180px, calc(100% - 40px));
            margin: 0 auto;
        }

        .site-header {
            position: fixed;
            z-index: 1000;
            inset: 0 0 auto;
            background: rgba(8, 9, 15, .8);
            border-bottom: 1px solid rgba(0, 240, 255, .14);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .nav-shell {
            position: relative;
            display: flex;
            align-items: center;
            gap: 25px;
            min-height: 78px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            flex: 0 0 auto;
            gap: 11px;
            min-width: max-content;
        }

        .brand-mark {
            display: grid;
            width: 38px;
            height: 38px;
            place-items: center;
            color: var(--ink);
            background: linear-gradient(145deg, var(--cyan), var(--blue));
            clip-path: polygon(20% 0, 100% 0, 80% 100%, 0 100%);
            font-family: "Space Grotesk", sans-serif;
            font-weight: 800;
            box-shadow: 0 0 18px rgba(0, 240, 255, .5);
        }

        .brand-copy strong,
        .brand-copy small {
            display: block;
        }

        .brand-copy strong {
            color: var(--white);
            font-family: "Space Grotesk", sans-serif;
            font-size: 1.05rem;
            letter-spacing: -.04em;
        }

        .brand-copy small {
            color: var(--cyan);
            font-size: .64rem;
            font-weight: 700;
            letter-spacing: .08em;
            text-transform: uppercase;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
        }

        .nav-link {
            position: relative;
            padding: 10px 14px !important;
            color: var(--muted) !important;
            font-size: .9rem;
            font-weight: 600;
        }

        .nav-link::after {
            position: absolute;
            right: 14px;
            bottom: 2px;
            left: 14px;
            height: 2px;
            content: "";
            background: var(--cyan);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .25s ease;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--white) !important;
        }

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

        .header-actions {
            display: flex;
            align-items: center;
            flex: 0 0 auto;
            gap: 8px;
            min-width: max-content;
        }

        .login-link {
            padding: 10px 8px;
            color: var(--silver);
            font-size: .86rem;
            font-weight: 700;
        }

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

        .btn {
            border: 0;
        }

        .btn-neon,
        .btn-outline-neon {
            border-radius: 10px;
            font-size: .86rem;
            font-weight: 800;
            padding: 12px 18px;
            letter-spacing: -.01em;
            transition: transform .25s ease, box-shadow .25s ease, background-color .25s ease, color .25s ease;
        }

        .btn-neon {
            color: var(--ink);
            border: 1px solid var(--cyan);
            background: var(--cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, .28);
        }

        .btn-neon:hover {
            color: var(--ink);
            background: #83f7ff;
            transform: translateY(-3px);
            box-shadow: 0 0 30px rgba(0, 240, 255, .55);
        }

        .btn-outline-neon {
            color: var(--cyan);
            border: 1px solid var(--line-bright);
            background: rgba(0, 240, 255, .04);
        }

        .btn-outline-neon:hover {
            color: var(--white);
            background: rgba(0, 240, 255, .12);
            border-color: var(--cyan);
            transform: translateY(-3px);
            box-shadow: var(--glow);
        }

        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible,
        select:focus-visible {
            outline: 3px solid rgba(0, 240, 255, .7);
            outline-offset: 3px;
        }

        .navbar-toggler {
            display: none;
            padding: 8px 11px;
            color: var(--cyan);
            border: 1px solid var(--line-bright);
            border-radius: 9px;
            background: rgba(0, 240, 255, .06);
        }

        .page-banner {
            position: relative;
            min-height: 500px;
            display: flex;
            align-items: flex-end;
            padding: 148px 0 70px;
            background-image:
                linear-gradient(90deg, rgba(8, 9, 15, .98) 0%, rgba(8, 9, 15, .82) 46%, rgba(8, 9, 15, .35) 100%),
                linear-gradient(0deg, rgba(8, 9, 15, .98), transparent 55%),
                url("/assets/images/backpic/back-2.jpg");
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--line);
        }

        .page-banner::after {
            position: absolute;
            right: 9%;
            bottom: 15%;
            width: 220px;
            height: 220px;
            content: "";
            border: 1px solid rgba(0, 240, 255, .18);
            border-radius: 50%;
            box-shadow: 0 0 0 22px rgba(0, 240, 255, .025), 0 0 0 44px rgba(0, 240, 255, .018);
            opacity: .8;
        }

        .eyebrow,
        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--cyan);
            font-family: "Space Grotesk", sans-serif;
            font-size: .72rem;
            font-weight: 700;
            letter-spacing: .15em;
            text-transform: uppercase;
        }

        .eyebrow::before,
        .section-kicker::before {
            width: 28px;
            height: 2px;
            content: "";
            background: var(--cyan);
            box-shadow: 0 0 12px var(--cyan);
        }

        h1,
        h2,
        h3,
        .display-number {
            color: var(--white);
            font-family: "Space Grotesk", sans-serif;
            font-weight: 700;
            letter-spacing: -.045em;
        }

        .page-banner h1 {
            max-width: 850px;
            margin: 18px 0 18px;
            font-size: clamp(2.25rem, 5vw, 4.35rem);
            line-height: 1.08;
        }

        .page-banner p {
            max-width: 720px;
            margin: 0;
            color: var(--silver);
            font-size: 1.08rem;
        }

        .breadcrumb-line {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 27px;
            color: var(--muted);
            font-size: .82rem;
        }

        .breadcrumb-line a {
            color: var(--cyan-soft);
        }

        .breadcrumb-line a:hover {
            color: var(--white);
        }

        main {
            position: relative;
        }

        .section {
            padding: 92px 0;
        }

        .section-tight {
            padding: 58px 0;
        }

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

        .section-heading h2 {
            margin: 12px 0 14px;
            font-size: clamp(1.8rem, 3vw, 2.8rem);
            line-height: 1.14;
        }

        .section-heading p {
            max-width: 650px;
            margin: 0;
            color: var(--muted);
        }

        .access-section {
            margin-top: -55px;
            position: relative;
            z-index: 2;
        }

        .access-panel {
            display: grid;
            grid-template-columns: 1.15fr .85fr;
            gap: 0;
            overflow: hidden;
            border: 1px solid var(--line-bright);
            border-radius: var(--radius);
            background: linear-gradient(135deg, rgba(18, 27, 48, .94), rgba(10, 18, 35, .83));
            box-shadow: var(--shadow), 0 0 38px rgba(0, 240, 255, .1);
        }

        .access-main {
            padding: 34px 38px;
        }

        .access-main h2 {
            margin: 0 0 10px;
            font-size: 1.55rem;
        }

        .access-main > p {
            margin: 0 0 24px;
            color: var(--muted);
        }

        .access-form {
            display: flex;
            flex-wrap: wrap;
            align-items: end;
            gap: 12px;
        }

        .field-group {
            flex: 1 1 220px;
        }

        .field-group label {
            display: block;
            margin-bottom: 7px;
            color: var(--cyan-soft);
            font-size: .78rem;
            font-weight: 700;
        }

        .field-group select {
            width: 100%;
            min-height: 48px;
            padding: 0 14px;
            color: var(--white);
            border: 1px solid var(--line);
            border-radius: 10px;
            outline: 0;
            background-color: #0d1526;
        }

        .field-group select:focus {
            border-color: var(--cyan);
            box-shadow: 0 0 0 3px rgba(0, 240, 255, .1);
        }

        .access-form .btn {
            min-height: 48px;
        }

        .access-result {
            display: none;
            width: 100%;
            margin-top: 14px;
            padding: 11px 14px;
            color: var(--success);
            border-left: 2px solid var(--success);
            background: rgba(129, 249, 154, .06);
            font-size: .88rem;
        }

        .access-result.show {
            display: block;
        }

        .access-aside {
            position: relative;
            padding: 32px;
            border-left: 1px solid var(--line);
            background:
                linear-gradient(145deg, rgba(0, 240, 255, .12), rgba(0, 82, 255, .08)),
                rgba(6, 12, 24, .54);
        }

        .access-aside::before {
            position: absolute;
            top: 24px;
            right: 25px;
            width: 8px;
            height: 8px;
            content: "";
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 14px var(--success);
        }

        .access-aside h3 {
            margin: 0 0 20px;
            font-size: 1rem;
            letter-spacing: -.02em;
        }

        .status-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid var(--line);
            font-size: .88rem;
        }

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

        .status-row span:first-child {
            color: var(--silver);
        }

        .status-pill {
            color: var(--success);
            font-size: .76rem;
            font-weight: 700;
        }

        .signal-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1px;
            margin-top: 34px;
            overflow: hidden;
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            background: var(--line);
        }

        .signal-item {
            padding: 22px 20px;
            background: rgba(13, 17, 30, .78);
        }

        .signal-item strong {
            display: block;
            margin-bottom: 3px;
            color: var(--cyan);
            font-family: "Space Grotesk", sans-serif;
            font-size: 1.45rem;
        }

        .signal-item span {
            color: var(--muted);
            font-size: .8rem;
        }

        .feature-layout {
            display: grid;
            grid-template-columns: .78fr 1.22fr;
            gap: 65px;
            align-items: start;
        }

        .feature-intro {
            position: sticky;
            top: 115px;
        }

        .feature-intro h2 {
            margin: 12px 0 16px;
            font-size: clamp(1.9rem, 3vw, 2.8rem);
            line-height: 1.12;
        }

        .feature-intro p {
            margin: 0 0 25px;
            color: var(--muted);
        }

        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--cyan);
            font-size: .9rem;
            font-weight: 700;
        }

        .feature-link:hover {
            color: var(--white);
            transform: translateX(4px);
        }

        .feature-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 17px;
        }

        .feature-item {
            min-height: 190px;
            padding: 25px;
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            background: rgba(18, 27, 48, .56);
            transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
        }

        .feature-item:hover {
            border-color: var(--line-bright);
            transform: translateY(-5px);
            box-shadow: var(--glow);
        }

        .feature-icon {
            display: grid;
            width: 42px;
            height: 42px;
            margin-bottom: 20px;
            place-items: center;
            color: var(--cyan);
            border: 1px solid rgba(0, 240, 255, .35);
            border-radius: 10px;
            background: rgba(0, 240, 255, .08);
            font-size: 1rem;
        }

        .feature-item h3 {
            margin: 0 0 8px;
            font-size: 1.05rem;
            letter-spacing: -.025em;
        }

        .feature-item p {
            margin: 0;
            color: var(--muted);
            font-size: .88rem;
            line-height: 1.62;
        }

        .split-section {
            position: relative;
            overflow: hidden;
            background: rgba(13, 17, 30, .5);
            border-top: 1px solid rgba(151, 178, 220, .08);
            border-bottom: 1px solid rgba(151, 178, 220, .08);
        }

        .use-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }

        .visual-frame {
            position: relative;
            padding: 10px;
            border: 1px solid var(--line-bright);
            background: rgba(0, 240, 255, .04);
            clip-path: polygon(0 0, 96% 0, 100% 11%, 100% 100%, 4% 100%, 0 89%);
        }

        .visual-frame img {
            width: 100%;
            height: 390px;
            object-fit: cover;
            opacity: .82;
            clip-path: polygon(0 0, 96% 0, 100% 11%, 100% 100%, 4% 100%, 0 89%);
        }

        .visual-caption {
            position: absolute;
            right: 25px;
            bottom: 26px;
            left: 25px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 13px 15px;
            border: 1px solid rgba(0, 240, 255, .32);
            background: rgba(8, 9, 15, .77);
            backdrop-filter: blur(12px);
        }

        .visual-caption strong {
            color: var(--white);
            font-size: .82rem;
        }

        .visual-caption span {
            color: var(--cyan);
            font-size: .72rem;
            font-weight: 700;
        }

        .use-copy h2 {
            margin: 12px 0 17px;
            font-size: clamp(1.9rem, 3vw, 2.75rem);
            line-height: 1.13;
        }

        .use-copy > p {
            margin-bottom: 28px;
            color: var(--muted);
        }

        .use-list {
            display: grid;
            gap: 17px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .use-list li {
            display: grid;
            grid-template-columns: 35px 1fr;
            gap: 13px;
            align-items: start;
        }

        .use-list i {
            display: grid;
            width: 30px;
            height: 30px;
            place-items: center;
            color: var(--cyan);
            border: 1px solid rgba(0, 240, 255, .32);
            border-radius: 50%;
            background: rgba(0, 240, 255, .07);
            font-size: .72rem;
        }

        .use-list strong {
            display: block;
            margin-bottom: 2px;
            color: var(--white);
            font-size: .96rem;
        }

        .use-list span {
            color: var(--muted);
            font-size: .86rem;
        }

        .steps-section {
            padding-bottom: 75px;
        }

        .step-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0;
            border-top: 1px solid var(--line);
        }

        .step {
            position: relative;
            padding: 30px 34px 20px 0;
        }

        .step:not(:last-child) {
            margin-right: 34px;
            border-right: 1px solid var(--line);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            margin-bottom: 23px;
            color: var(--ink);
            border-radius: 8px;
            background: var(--cyan);
            font-family: "Space Grotesk", sans-serif;
            font-size: .84rem;
            font-weight: 800;
            box-shadow: 0 0 17px rgba(0, 240, 255, .3);
        }

        .step h3 {
            margin: 0 0 9px;
            font-size: 1.08rem;
        }

        .step p {
            max-width: 290px;
            margin: 0;
            color: var(--muted);
            font-size: .88rem;
        }

        .proof-layout {
            display: grid;
            grid-template-columns: 1fr .9fr;
            gap: 70px;
            align-items: center;
        }

        .proof-copy h2 {
            margin: 12px 0 15px;
            font-size: clamp(1.9rem, 3vw, 2.7rem);
            line-height: 1.14;
        }

        .proof-copy > p {
            max-width: 600px;
            margin-bottom: 27px;
            color: var(--muted);
        }

        .proof-points {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px 28px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .proof-points li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--silver);
            font-size: .88rem;
        }

        .proof-points i {
            margin-top: 5px;
            color: var(--cyan);
            font-size: .72rem;
        }

        .proof-panel {
            padding: 28px;
            border: 1px solid var(--line-bright);
            border-radius: var(--radius);
            background:
                linear-gradient(145deg, rgba(23, 105, 255, .13), rgba(0, 240, 255, .04)),
                var(--panel);
            box-shadow: var(--shadow);
        }

        .proof-panel h3 {
            margin: 0 0 20px;
            font-size: 1.1rem;
        }

        .proof-stat {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 16px 0;
            border-bottom: 1px solid var(--line);
        }

        .proof-stat:last-child {
            border-bottom: 0;
        }

        .proof-stat i {
            color: var(--cyan);
            font-size: 1rem;
        }

        .proof-stat strong {
            display: block;
            color: var(--white);
            font-family: "Space Grotesk", sans-serif;
            font-size: 1.15rem;
        }

        .proof-stat span {
            display: block;
            color: var(--muted);
            font-size: .78rem;
        }

        .price-band {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 50px;
            align-items: center;
            padding: 38px 42px;
            border: 1px solid rgba(0, 240, 255, .32);
            border-radius: var(--radius);
            background:
                linear-gradient(110deg, rgba(0, 240, 255, .09), rgba(23, 105, 255, .08)),
                rgba(18, 27, 48, .6);
        }

        .price-band h2 {
            margin: 10px 0 10px;
            font-size: clamp(1.75rem, 3vw, 2.45rem);
        }

        .price-band p {
            max-width: 630px;
            margin: 0;
            color: var(--muted);
        }

        .price-detail {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .price-item {
            padding: 16px;
            border-left: 2px solid var(--cyan);
            background: rgba(8, 9, 15, .42);
        }

        .price-item strong {
            display: block;
            color: var(--cyan);
            font-family: "Space Grotesk", sans-serif;
            font-size: 1.2rem;
        }

        .price-item span {
            color: var(--muted);
            font-size: .76rem;
        }

        .faq-layout {
            display: grid;
            grid-template-columns: .65fr 1.35fr;
            gap: 70px;
            align-items: start;
        }

        .faq-intro h2 {
            margin: 12px 0 14px;
            font-size: clamp(1.9rem, 3vw, 2.65rem);
            line-height: 1.12;
        }

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

        .accordion {
            --bs-accordion-bg: transparent;
            --bs-accordion-border-color: transparent;
            --bs-accordion-color: var(--silver);
            --bs-accordion-btn-color: var(--white);
            --bs-accordion-btn-bg: transparent;
            --bs-accordion-active-color: var(--cyan);
            --bs-accordion-active-bg: transparent;
        }

        .accordion-item {
            margin-bottom: 10px;
            border: 1px solid var(--line) !important;
            border-radius: var(--radius-sm) !important;
            background: rgba(18, 27, 48, .52);
            overflow: hidden;
        }

        .accordion-button {
            gap: 15px;
            padding: 20px 22px;
            color: var(--white) !important;
            background: transparent !important;
            box-shadow: none !important;
            font-size: .94rem;
            font-weight: 700;
        }

        .accordion-button::after {
            width: 12px;
            height: 12px;
            background-image: none;
            border-right: 2px solid var(--cyan);
            border-bottom: 2px solid var(--cyan);
            transform: rotate(45deg);
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(225deg);
        }

        .accordion-button:hover {
            color: var(--cyan) !important;
        }

        .accordion-body {
            padding: 0 22px 21px;
            color: var(--muted);
            font-size: .87rem;
        }

        .final-cta {
            position: relative;
            padding: 96px 0;
            text-align: center;
            background-image:
                linear-gradient(rgba(8, 9, 15, .73), rgba(8, 9, 15, .92)),
                url("/assets/images/backpic/back-3.jpg");
            background-size: cover;
            background-position: center;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .final-cta h2 {
            max-width: 720px;
            margin: 14px auto 15px;
            font-size: clamp(2rem, 4vw, 3.25rem);
            line-height: 1.1;
        }

        .final-cta p {
            max-width: 670px;
            margin: 0 auto 28px;
            color: var(--silver);
        }

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

        .site-footer {
            padding: 50px 0 24px;
            background: #070a12;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.25fr .75fr .9fr;
            gap: 50px;
            padding-bottom: 36px;
            border-bottom: 1px solid var(--line);
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            margin-bottom: 18px;
        }

        .footer-brand .brand-mark {
            width: 34px;
            height: 34px;
            font-size: .85rem;
        }

        .footer-brand strong {
            display: block;
            color: var(--white);
            font-family: "Space Grotesk", sans-serif;
            font-size: 1.05rem;
        }

        .footer-brand small {
            color: var(--cyan);
            font-size: .65rem;
            font-weight: 700;
            letter-spacing: .09em;
            text-transform: uppercase;
        }

        .footer-about {
            max-width: 400px;
            margin: 0;
            color: var(--muted);
            font-size: .84rem;
        }

        .footer-heading {
            margin: 3px 0 16px;
            color: var(--white);
            font-size: .86rem;
            font-weight: 800;
        }

        .footer-links {
            display: grid;
            gap: 9px;
            margin: 0;
            padding: 0;
            list-style: none;
            color: var(--muted);
            font-size: .83rem;
        }

        .footer-links a:hover {
            color: var(--cyan);
            transform: translateX(3px);
        }

        .trust-list {
            display: grid;
            gap: 10px;
            margin: 0;
            padding: 0;
            list-style: none;
            color: var(--muted);
            font-size: .82rem;
        }

        .trust-list li {
            display: flex;
            align-items: center;
            gap: 9px;
        }

        .trust-list i {
            width: 16px;
            color: var(--cyan);
            text-align: center;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 22px;
            padding-top: 20px;
            color: var(--muted);
            font-size: .75rem;
        }

        .review-line {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            color: var(--silver);
        }

        .review-avatar {
            display: inline-grid;
            width: 27px;
            height: 27px;
            place-items: center;
            color: var(--ink);
            border-radius: 50%;
            background: var(--cyan);
            font-size: .75rem;
            font-weight: 800;
        }

        .fab-neon {
            position: fixed;
            z-index: 1050;
            bottom: 6rem;
            left: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 9px;
            min-width: 52px;
            min-height: 52px;
            padding: 0 16px;
            color: var(--cyan);
            border: 1px solid transparent;
            border-radius: 16px;
            background:
                linear-gradient(rgba(8, 9, 15, .92), rgba(8, 9, 15, .92)) padding-box,
                linear-gradient(135deg, var(--cyan), var(--blue), #6d4aff) border-box;
            box-shadow: 0 0 18px rgba(0, 240, 255, .36);
            opacity: .72;
            animation: fab-breathe 3s ease-in-out infinite;
        }

        .fab-neon:hover {
            color: var(--white);
            opacity: 1;
            transform: scale(1.08);
            box-shadow: 0 0 31px rgba(0, 240, 255, .7);
        }

        .fab-neon:active {
            transform: scale(.95);
            border-color: #ff3bb2;
        }

        .fab-neon i {
            color: var(--cyan);
            font-size: 1.05rem;
            transition: transform .4s ease, color .25s ease;
        }

        .fab-neon:hover i {
            color: var(--white);
            transform: rotate(360deg);
        }

        .fab-neon span {
            font-size: .76rem;
            font-weight: 800;
        }

        .fab-dot {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 11px;
            height: 11px;
            border: 2px solid var(--ink);
            border-radius: 50%;
            background: #ff3c78;
            box-shadow: 0 0 13px #ff3c78;
            animation: dot-blink 1.7s ease-in-out infinite;
        }

        @keyframes fab-breathe {
            0%, 100% {
                box-shadow: 0 0 16px rgba(0, 240, 255, .3);
            }
            50% {
                box-shadow: 0 0 27px rgba(0, 240, 255, .58);
            }
        }

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

        @media (max-width: 1024px) {
            .container {
                width: min(100% - 32px, 920px);
            }

            .nav-shell {
                gap: 14px;
            }

            .main-nav {
                gap: 0;
            }

            .nav-link {
                padding-right: 9px !important;
                padding-left: 9px !important;
            }

            .access-panel,
            .proof-layout {
                gap: 35px;
            }

            .feature-layout,
            .faq-layout {
                gap: 42px;
            }

            .price-band {
                gap: 30px;
            }
        }

        @media (max-width: 800px) {
            .nav-shell {
                min-height: 70px;
            }

            .main-nav {
                position: absolute;
                top: calc(100% + 1px);
                right: 0;
                left: 0;
                display: none;
                padding: 10px;
                border: 1px solid var(--line-bright);
                border-top: 0;
                background: rgba(8, 9, 15, .96);
                box-shadow: var(--shadow);
            }

            .main-nav.is-open {
                display: grid;
            }

            .nav-link {
                padding: 12px 14px !important;
            }

            .nav-link::after {
                right: auto;
                bottom: 7px;
                left: 14px;
                width: 28px;
            }

            .navbar-toggler {
                display: block;
                flex: 0 0 auto;
            }

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

            .page-banner {
                min-height: 520px;
                padding-top: 130px;
            }

            .access-panel,
            .feature-layout,
            .use-layout,
            .proof-layout,
            .price-band,
            .faq-layout {
                grid-template-columns: 1fr;
            }

            .access-aside {
                border-top: 1px solid var(--line);
                border-left: 0;
            }

            .feature-intro {
                position: static;
            }

            .use-layout {
                gap: 38px;
            }

            .proof-layout {
                gap: 34px;
            }

            .price-band {
                padding: 30px;
            }

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

            .footer-grid > :first-child {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 600px) {
            .container {
                width: min(100% - 26px, 560px);
            }

            body {
                font-size: 15px;
            }

            .brand {
                gap: 7px;
            }

            .brand-mark {
                width: 32px;
                height: 32px;
                font-size: .8rem;
            }

            .brand-copy strong {
                font-size: .78rem;
            }

            .brand-copy small {
                font-size: .49rem;
                letter-spacing: .04em;
            }

            .header-actions {
                gap: 2px;
            }

            .login-link {
                padding: 8px 4px;
                font-size: .68rem;
            }

            .header-actions .btn-neon {
                padding: 9px 9px;
                font-size: .68rem;
            }

            .navbar-toggler {
                padding: 7px 9px;
                font-size: .86rem;
            }

            .page-banner {
                min-height: 555px;
                padding: 124px 0 52px;
            }

            .page-banner::after {
                right: -70px;
                bottom: 12%;
                width: 170px;
                height: 170px;
            }

            .page-banner h1 {
                font-size: clamp(2rem, 11vw, 3.1rem);
            }

            .page-banner p {
                font-size: .95rem;
            }

            .section {
                padding: 67px 0;
            }

            .section-tight {
                padding: 42px 0;
            }

            .access-section {
                margin-top: -32px;
            }

            .access-main,
            .access-aside {
                padding: 25px 21px;
            }

            .signal-grid,
            .feature-list,
            .proof-points,
            .price-detail {
                grid-template-columns: 1fr;
            }

            .signal-item {
                padding: 17px 18px;
            }

            .feature-list {
                gap: 12px;
            }

            .feature-item {
                min-height: auto;
            }

            .visual-frame img {
                height: 300px;
            }

            .visual-caption {
                right: 17px;
                bottom: 18px;
                left: 17px;
            }

            .step-row {
                grid-template-columns: 1fr;
                border-top: 0;
            }

            .step,
            .step:not(:last-child) {
                margin: 0;
                padding: 22px 0;
                border-right: 0;
                border-bottom: 1px solid var(--line);
            }

            .step:last-child {
                border-bottom: 0;
            }

            .price-band {
                padding: 25px 21px;
            }

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

            .footer-grid > :first-child {
                grid-column: auto;
            }

            .footer-bottom {
                align-items: flex-start;
                flex-direction: column;
                gap: 13px;
            }

            .fab-neon {
                left: 14px;
                bottom: 5.2rem;
                padding: 0 14px;
            }
        }

        @media (max-width: 370px) {
            .brand-copy small {
                display: none;
            }

            .brand-copy strong {
                font-size: .72rem;
            }

            .header-actions .btn-neon {
                max-width: 76px;
                overflow: hidden;
                padding-right: 6px;
                padding-left: 6px;
                white-space: nowrap;
                text-overflow: ellipsis;
            }
        }