/* roulang page: index */
:root {
      --bg: #08090f;
      --bg-deep: #05070d;
      --panel: rgba(13, 17, 30, .78);
      --panel-strong: #101728;
      --line: rgba(87, 158, 255, .20);
      --line-bright: rgba(0, 240, 255, .58);
      --blue: #0052ff;
      --cyan: #00f0ff;
      --mint: #7ef9dc;
      --text: #f6fbff;
      --muted: #aebdd1;
      --dim: #74849b;
      --danger: #ff5470;
      --radius-lg: 26px;
      --radius-md: 17px;
      --radius-sm: 12px;
      --shadow: 0 20px 60px rgba(0, 0, 0, .34);
      --glow: 0 0 26px rgba(0, 240, 255, .17);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      min-width: 320px;
      overflow-x: hidden;
      color: var(--text);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      font-size: 16px;
      line-height: 1.62;
      background:
        radial-gradient(circle at 82% -10%, rgba(0, 82, 255, .25), transparent 31rem),
        radial-gradient(circle at 7% 35%, rgba(0, 240, 255, .08), transparent 28rem),
        var(--bg);
    }
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      z-index: -1;
      opacity: .19;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(118, 178, 255, .12) 1px, transparent 1px),
        linear-gradient(90deg, rgba(118, 178, 255, .12) 1px, transparent 1px);
      background-size: 44px 44px;
      mask-image: linear-gradient(to bottom, black, transparent 72%);
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    :focus-visible { outline: 3px solid var(--cyan); outline-offset: 4px; }
    .container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
    .section { position: relative; padding: 92px 0; }
    .eyebrow {
      display: inline-flex; align-items: center; gap: 8px;
      color: var(--cyan); font-size: .73rem; letter-spacing: .14em;
      text-transform: uppercase; font-weight: 800;
    }
    .eyebrow::before { content: ""; width: 24px; height: 2px; background: var(--cyan); box-shadow: 0 0 9px var(--cyan); }
    h1, h2, h3, p { margin-top: 0; }
    h2 {
      max-width: 760px; margin-bottom: 14px; color: var(--text);
      font-size: clamp(1.85rem, 3.5vw, 3rem); line-height: 1.16;
      font-weight: 800; letter-spacing: -.035em;
    }
    h3 { font-size: 1.08rem; line-height: 1.32; font-weight: 750; }
    .lead { max-width: 690px; color: var(--muted); font-size: 1.05rem; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 39px; }
    .section-head .lead { margin-bottom: 0; }
    .text-link {
      display: inline-flex; align-items: center; gap: 8px; color: var(--cyan);
      font-size: .9rem; font-weight: 800; white-space: nowrap; transition: color .2s ease, transform .2s ease;
    }
    .text-link:hover { color: #fff; transform: translateX(3px); }

    .site-header {
      position: sticky; top: 0; z-index: 45; border-bottom: 1px solid rgba(139, 191, 255, .13);
      background: rgba(5, 7, 13, .78); backdrop-filter: blur(18px);
    }
    .nav-wrap { height: 76px; display: flex; align-items: center; gap: 25px; }
    .brand {
      flex: 0 0 auto; display: flex; align-items: center; gap: 10px; max-width: 295px;
      font-size: .85rem; font-weight: 850; line-height: 1.14; letter-spacing: -.015em;
    }
    .brand-mark {
      position: relative; width: 38px; height: 38px; flex: 0 0 38px; display: grid; place-items: center;
      color: var(--cyan); border: 1px solid rgba(0, 240, 255, .64); border-radius: 11px;
      background: linear-gradient(135deg, rgba(0, 240, 255, .18), rgba(0, 82, 255, .16));
      box-shadow: inset 0 0 15px rgba(0, 240, 255, .12), 0 0 17px rgba(0, 240, 255, .13);
    }
    .brand-mark::after { content: ""; position: absolute; inset: 5px; border: 1px solid rgba(255,255,255,.3); transform: rotate(45deg); }
    .brand-mark span { position: relative; z-index: 1; font-size: .8rem; font-weight: 900; }
    .desktop-nav { display: flex; align-items: center; gap: 5px; margin-left: auto; }
    .desktop-nav a {
      padding: 9px 12px; color: var(--muted); border-radius: 9px; font-size: .88rem; font-weight: 700;
      transition: background .2s, color .2s;
    }
    .desktop-nav a:hover, .desktop-nav a.active { color: white; background: rgba(0, 82, 255, .16); }
    .nav-actions { display: flex; align-items: center; gap: 9px; }
    .login-btn {
      padding: 9px 10px; border: 0; background: transparent; color: #d7e5f5; font-size: .85rem; font-weight: 750;
      transition: color .2s ease;
    }
    .login-btn:hover { color: var(--cyan); }
    .signup-btn, .primary-btn, .secondary-btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 43px;
      padding: 11px 17px; border-radius: 10px; font-size: .87rem; font-weight: 850;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    }
    .signup-btn, .primary-btn {
      border: 1px solid #1585ff; color: #fff;
      background: linear-gradient(135deg, #0052ff, #0879f9 60%, #00c9ff);
      box-shadow: 0 8px 23px rgba(0, 82, 255, .28), inset 0 1px rgba(255,255,255,.22);
    }
    .signup-btn:hover, .primary-btn:hover { transform: translateY(-2px); box-shadow: 0 13px 30px rgba(0, 130, 255, .36), 0 0 20px rgba(0,240,255,.16); }
    .signup-btn:active, .primary-btn:active { transform: translateY(1px) scale(.98); }
    .secondary-btn { color: #dffaff; border: 1px solid rgba(0,240,255,.40); background: rgba(0, 240, 255, .06); }
    .secondary-btn:hover { border-color: var(--cyan); background: rgba(0,240,255,.12); transform: translateY(-2px); }
    .menu-button { display: none; border: 1px solid var(--line); color: white; background: rgba(0,82,255,.10); border-radius: 9px; width: 39px; height: 39px; }

    .hero { min-height: 710px; display: flex; align-items: center; isolation: isolate; overflow: hidden; padding: 88px 0 78px; }
    .hero::before {
      content: ""; position: absolute; inset: 0; z-index: -2;
      background: linear-gradient(90deg, rgba(5,7,13,.97) 0%, rgba(5,7,13,.84) 45%, rgba(5,7,13,.76) 100%), url('/assets/images/backpic/back-1.jpg') center/cover;
    }
    .hero::after {
      content: ""; position: absolute; width: 460px; height: 460px; right: -100px; top: 85px; z-index: -1;
      border: 1px solid rgba(0,240,255,.17); border-radius: 50%;
      box-shadow: 0 0 0 52px rgba(0,82,255,.04), 0 0 0 105px rgba(0,240,255,.025), 0 0 80px rgba(0,240,255,.15);
    }
    .hero-grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 68px; align-items: center; }
    .hero-copy h1 {
      max-width: 760px; margin: 17px 0 22px; font-size: clamp(2.5rem, 5vw, 4.65rem);
      line-height: 1.02; letter-spacing: -.06em; font-weight: 900;
    }
    .hero-copy h1 .electric { color: var(--cyan); text-shadow: 0 0 26px rgba(0,240,255,.26); }
    .hero-copy > p { max-width: 665px; margin-bottom: 27px; color: #cad6e5; font-size: 1.05rem; }
    .hero-points { display: flex; flex-wrap: wrap; gap: 10px 21px; margin: 0 0 30px; padding: 0; list-style: none; color: #dcebf8; font-size: .88rem; font-weight: 700; }
    .hero-points li { display: flex; align-items: center; gap: 8px; }
    .hero-points li::before { content: "✓"; width: 19px; height: 19px; display: grid; place-items: center; color: #00131b; background: var(--mint); border-radius: 50%; font-size: .72rem; font-weight: 900; }
    .hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
    .hero-note { width: 100%; margin: 5px 0 0; color: var(--dim); font-size: .77rem; }

    .guide-cover {
      position: relative; min-height: 465px; padding: 22px; overflow: hidden;
      border: 1px solid rgba(0,240,255,.32); border-radius: var(--radius-lg);
      background: linear-gradient(140deg, rgba(19,28,48,.9), rgba(7,12,23,.84));
      box-shadow: var(--shadow), 0 0 45px rgba(0, 82, 255, .12), inset 0 1px rgba(255,255,255,.07);
    }
    .guide-cover::before { content: ""; position: absolute; inset: 0; background: linear-gradient(125deg, transparent 25%, rgba(0,240,255,.06), transparent 58%); pointer-events: none; }
    .cover-top { position: relative; display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: .73rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
    .cover-chip { padding: 5px 9px; border: 1px solid rgba(0,240,255,.32); border-radius: 999px; color: var(--cyan); background: rgba(0,240,255,.07); }
    .cover-title { position: relative; margin: 62px 0 12px; max-width: 310px; font-size: 2.25rem; font-weight: 900; line-height: .98; letter-spacing: -.065em; }
    .cover-title span { color: var(--cyan); }
    .cover-subtitle { position: relative; max-width: 315px; color: #b8c8dc; font-size: .87rem; }
    .cover-index {
      position: absolute; right: 0; bottom: 0; width: 61%; padding: 20px 18px 16px;
      border-top: 1px solid rgba(0,240,255,.28); border-left: 1px solid rgba(0,240,255,.28);
      border-radius: 18px 0 0 0; background: rgba(5, 10, 19, .74); backdrop-filter: blur(8px);
    }
    .cover-index strong { display: block; margin-bottom: 8px; color: var(--cyan); font-size: .72rem; letter-spacing: .11em; text-transform: uppercase; }
    .cover-index ol { margin: 0; padding-left: 19px; color: #d4dfed; font-size: .76rem; line-height: 1.78; }
    .cover-glow { position: absolute; top: 48px; right: 35px; width: 105px; height: 105px; border: 1px solid var(--cyan); border-radius: 50%; opacity: .55; box-shadow: 0 0 26px var(--cyan), inset 0 0 25px rgba(0,240,255,.2); }
    .cover-glow::before, .cover-glow::after { content: ""; position: absolute; background: var(--cyan); }
    .cover-glow::before { width: 1px; inset: -18px 50%; }
    .cover-glow::after { height: 1px; inset: 50% -18px; }

    .mini-form { margin-top: 24px; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius-md); background: rgba(5, 9, 18, .48); }
    .mini-form label { display: block; margin-bottom: 7px; color: #dce6f4; font-size: .77rem; font-weight: 750; }
    .form-row { display: flex; gap: 8px; }
    .mini-form input {
      min-width: 0; flex: 1; padding: 11px 12px; color: white; border: 1px solid rgba(123,155,193,.3);
      border-radius: 9px; background: rgba(2,6,14,.7); outline: none;
    }
    .mini-form input::placeholder { color: #71829a; }
    .mini-form input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0,240,255,.10); }
    .mini-form button { min-width: 112px; border: 0; }
    .form-hint { margin: 9px 0 0; color: var(--dim); font-size: .7rem; line-height: 1.45; }

    .signal-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(6,11,20,.7); }
    .signal-list { display: grid; grid-template-columns: repeat(4, 1fr); }
    .signal { min-height: 109px; display: flex; align-items: center; gap: 14px; padding: 18px 23px; border-right: 1px solid var(--line); }
    .signal:first-child { border-left: 1px solid var(--line); }
    .signal-icon { width: 39px; height: 39px; flex: 0 0 39px; display: grid; place-items: center; color: var(--cyan); border: 1px solid rgba(0,240,255,.28); border-radius: 11px; background: rgba(0,240,255,.06); }
    .signal strong { display: block; font-size: .86rem; line-height: 1.2; }
    .signal span { display: block; margin-top: 3px; color: var(--dim); font-size: .72rem; line-height: 1.35; }

    .portrait-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 63px; align-items: center; }
    .portrait-stage { position: relative; min-height: 560px; }
    .portrait-back { position: absolute; left: 3%; top: 3%; width: 72%; height: 91%; overflow: hidden; border-radius: 24px; opacity: .55; filter: saturate(.65); }
    .portrait-back img { width: 100%; height: 100%; object-fit: cover; }
    .portrait-card {
      position: absolute; z-index: 2; right: 0; top: 48px; width: 63%; padding: 19px; border: 1px solid rgba(0,240,255,.34);
      border-radius: 20px; background: rgba(12, 20, 36, .78); box-shadow: var(--shadow); backdrop-filter: blur(12px);
    }
    .portrait-card img { width: 100%; height: 250px; object-fit: cover; border-radius: 13px; }
    .portrait-card .tag { margin-top: 15px; }
    .portrait-card p { margin: 10px 0 0; color: #b6c6d9; font-size: .81rem; line-height: 1.55; }
    .portrait-badge {
      position: absolute; z-index: 3; left: 0; bottom: 31px; padding: 13px 16px; border: 1px solid rgba(0,82,255,.52);
      border-radius: 13px; background: #09162b; box-shadow: 0 10px 28px rgba(0,0,0,.28);
    }
    .portrait-badge strong { display: block; color: var(--cyan); font-size: 1.18rem; line-height: 1; }
    .portrait-badge span { display: block; margin-top: 4px; color: var(--muted); font-size: .7rem; }
    .split-copy .section-head { display: block; margin-bottom: 28px; }
    .criteria { display: grid; gap: 1px; border-top: 1px solid var(--line); }
    .criteria-item { display: grid; grid-template-columns: 48px 1fr; gap: 14px; padding: 19px 0; border-bottom: 1px solid var(--line); }
    .criteria-num { color: var(--cyan); font-size: .79rem; font-weight: 900; }
    .criteria-item h3 { margin: 0 0 5px; }
    .criteria-item p { margin: 0; color: var(--muted); font-size: .9rem; }

    .hot-section { overflow: hidden; background: linear-gradient(135deg, rgba(0, 82, 255, .10), rgba(5,7,13,0) 52%); }
    .ranking-wrap { display: grid; grid-template-columns: 1.2fr .8fr; gap: 22px; }
    .rank-list { border-top: 1px solid var(--line); }
    .rank-item {
      display: grid; grid-template-columns: 50px 1fr auto; align-items: center; gap: 15px; padding: 19px 8px;
      border-bottom: 1px solid var(--line); transition: padding .2s ease, background .2s ease;
    }
    .rank-item:hover { padding-left: 16px; background: rgba(0,82,255,.07); }
    .rank-no { color: #60718a; font-weight: 900; font-size: 1.25rem; font-style: italic; }
    .rank-item:first-child .rank-no, .rank-item:nth-child(2) .rank-no, .rank-item:nth-child(3) .rank-no { color: var(--cyan); text-shadow: 0 0 12px rgba(0,240,255,.45); }
    .rank-item h3 { margin: 0 0 3px; font-size: .96rem; }
    .rank-item p { margin: 0; color: var(--muted); font-size: .78rem; }
    .score { min-width: 68px; color: var(--cyan); font-size: .87rem; font-weight: 900; text-align: right; }
    .score small { display: block; color: var(--dim); font-size: .61rem; font-weight: 650; }
    .ranking-note { padding: 29px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: linear-gradient(150deg, rgba(18,31,56,.86), rgba(8,12,22,.86)); box-shadow: var(--glow); }
    .ranking-note svg { color: var(--cyan); }
    .ranking-note h3 { margin: 21px 0 10px; font-size: 1.34rem; }
    .ranking-note p { color: var(--muted); font-size: .91rem; }
    .check-list { padding: 0; margin: 20px 0; list-style: none; }
    .check-list li { position: relative; padding: 8px 0 8px 25px; color: #d6e2ee; font-size: .83rem; border-bottom: 1px dashed rgba(141,176,215,.18); }
    .check-list li::before { content: "↗"; position: absolute; left: 0; color: var(--cyan); font-weight: 900; }

    .review-wall { display: grid; grid-template-columns: .82fr 1.18fr; gap: 57px; align-items: start; }
    .review-intro { position: sticky; top: 108px; }
    .quote-stat { display: flex; align-items: end; gap: 15px; margin: 28px 0; }
    .quote-stat strong { color: var(--cyan); font-size: 4rem; line-height: .82; letter-spacing: -.08em; }
    .quote-stat span { max-width: 140px; color: var(--muted); font-size: .8rem; line-height: 1.35; }
    .review-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .review { padding: 21px; border: 1px solid var(--line); border-radius: 16px; background: rgba(14,21,36,.68); transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
    .review:nth-child(2) { margin-top: 43px; }
    .review:nth-child(3) { margin-top: -25px; }
    .review:hover { transform: translateY(-4px); border-color: rgba(0,240,255,.46); box-shadow: var(--glow); }
    .stars { color: var(--cyan); letter-spacing: 2px; font-size: .78rem; }
    .review blockquote { margin: 14px 0 18px; color: #d9e4f1; font-size: .88rem; line-height: 1.6; }
    .review-author { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: .73rem; font-weight: 750; }
    .avatar { width: 27px; height: 27px; display: grid; place-items: center; color: #041119; border-radius: 50%; background: linear-gradient(135deg, var(--cyan), #658bff); font-size: .67rem; font-weight: 900; }

    .news-section { padding-top: 56px; }
    .news-layout { display: grid; grid-template-columns: 1.22fr .78fr; gap: 56px; }
    .news-list { border-top: 1px solid var(--line); }
    .news-item { display: grid; grid-template-columns: 95px 1fr auto; align-items: center; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--line); transition: padding .2s, background .2s; }
    .news-item:hover { padding-left: 10px; background: rgba(0,240,255,.035); }
    .news-date { color: var(--cyan); font-size: .73rem; font-weight: 850; line-height: 1.35; }
    .news-date span { display: block; color: var(--dim); font-size: .67rem; font-weight: 650; }
    .news-item h3 { margin: 0 0 4px; font-size: 1rem; }
    .news-item p { margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.5; }
    .news-arrow { color: var(--cyan); font-size: 1.25rem; transition: transform .2s; }
    .news-item:hover .news-arrow { transform: translateX(4px); }
    .news-aside { padding: 25px; align-self: start; border: 1px solid var(--line); border-radius: 20px; background: rgba(14,21,36,.73); }
    .news-aside img { width: 100%; height: 178px; margin-bottom: 19px; object-fit: cover; border-radius: 12px; opacity: .83; }
    .news-aside h3 { margin-bottom: 9px; font-size: 1.2rem; }
    .news-aside p { color: var(--muted); font-size: .86rem; }
    .tag { display: inline-flex; padding: 5px 9px; color: var(--cyan); border: 1px solid rgba(0,240,255,.28); border-radius: 999px; background: rgba(0,240,255,.06); font-size: .68rem; font-weight: 850; letter-spacing: .04em; }

    .faq-section { padding-top: 55px; }
    .faq-layout { display: grid; grid-template-columns: .76fr 1.24fr; gap: 64px; align-items: start; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-list details { border-bottom: 1px solid var(--line); }
    .faq-list summary { position: relative; padding: 19px 33px 19px 0; color: #f3f8ff; cursor: pointer; list-style: none; font-size: 1rem; font-weight: 780; }
    .faq-list summary::-webkit-details-marker { display: none; }
    .faq-list summary::after { content: "+"; position: absolute; right: 2px; top: 15px; color: var(--cyan); font-size: 1.45rem; font-weight: 400; transition: transform .2s; }
    .faq-list details[open] summary::after { transform: rotate(45deg); }
    .faq-list details p { max-width: 760px; margin: -3px 0 19px; color: var(--muted); font-size: .9rem; }
    .safety-card { padding: 29px; border: 1px solid rgba(0,240,255,.30); border-radius: var(--radius-lg); background: linear-gradient(145deg, rgba(0,66,121,.22), rgba(13,17,30,.86) 60%); box-shadow: var(--glow); }
    .safety-card .lock { width: 47px; height: 47px; display: grid; place-items: center; margin-bottom: 22px; color: var(--cyan); border: 1px solid var(--line-bright); border-radius: 13px; }
    .safety-card h3 { margin-bottom: 10px; font-size: 1.35rem; }
    .safety-card p { color: var(--muted); font-size: .9rem; }
    .safety-mini { display: grid; gap: 11px; margin-top: 23px; }
    .safety-mini div { padding: 10px 0; color: #d7e5f3; border-bottom: 1px solid rgba(142,175,212,.14); font-size: .82rem; }
    .safety-mini b { display: inline-block; width: 28px; color: var(--cyan); }

    .cart-section { padding-bottom: 118px; }
    .cart-panel {
      position: relative; overflow: hidden; padding: 52px 58px;
      border: 1px solid rgba(0,240,255,.35); border-radius: 27px;
      background: linear-gradient(115deg, rgba(0,56,141,.42), rgba(12,20,37,.92) 47%, rgba(8,11,20,.95));
      box-shadow: 0 22px 70px rgba(0,0,0,.35), 0 0 42px rgba(0,82,255,.13);
    }
    .cart-panel::after { content: ""; position: absolute; right: -70px; top: -100px; width: 360px; height: 360px; border: 1px solid rgba(0,240,255,.25); border-radius: 50%; box-shadow: 0 0 0 39px rgba(0,240,255,.04), 0 0 0 79px rgba(0,82,255,.05); }
    .cart-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr auto; gap: 35px; align-items: center; }
    .cart-panel h2 { max-width: 700px; margin-bottom: 13px; }
    .cart-panel p { max-width: 660px; margin-bottom: 0; color: #c8d8e9; }
    .cart-form { display: flex; gap: 9px; min-width: 345px; }
    .cart-form input { min-width: 0; width: 190px; padding: 12px; color: #fff; border: 1px solid rgba(135,175,219,.35); border-radius: 10px; background: rgba(2,7,16,.65); }
    .cart-form input:focus { border-color: var(--cyan); outline: none; }
    .cart-form button { border: 0; white-space: nowrap; }
    .responsible { position: relative; z-index: 1; margin: 19px 0 0; color: #91a9c3; font-size: .72rem; }

    .site-footer { padding: 57px 0 94px; border-top: 1px solid var(--line); background: #05070d; }
    .footer-grid { display: grid; grid-template-columns: 1.1fr .7fr .7fr; gap: 45px; }
    .footer-brand { display: flex; align-items: flex-start; gap: 11px; }
    .footer-brand .brand-mark { margin-top: 2px; }
    .footer-brand strong { display: block; max-width: 270px; font-size: .96rem; line-height: 1.25; }
    .footer-brand p { max-width: 365px; margin: 12px 0 0; color: var(--dim); font-size: .8rem; }
    .footer-col h3 { margin-bottom: 13px; color: #dce9f8; font-size: .82rem; text-transform: uppercase; letter-spacing: .09em; }
    .footer-col a { display: block; width: fit-content; margin: 8px 0; color: var(--muted); font-size: .83rem; transition: color .2s; }
    .footer-col a:hover { color: var(--cyan); }
    .age-row { display: flex; align-items: center; gap: 10px; }
    .age-badge { width: 37px; height: 37px; display: grid; place-items: center; color: var(--cyan); border: 1px solid var(--cyan); border-radius: 50%; font-size: .78rem; font-weight: 900; }
    .age-row p { margin: 0; color: var(--dim); font-size: .76rem; line-height: 1.45; }
    .copyright { display: flex; justify-content: space-between; gap: 20px; margin-top: 44px; padding-top: 18px; color: #607088; border-top: 1px solid rgba(136,170,211,.13); font-size: .72rem; }
    .copyright a { color: #7899bc; }
    .copyright a:hover { color: var(--cyan); }

    .fab {
      position: fixed; left: 16px; bottom: 96px; z-index: 50; width: 58px; height: 58px; display: grid; place-items: center;
      color: var(--cyan); border: 1px solid transparent; border-radius: 17px; opacity: .72;
      background: linear-gradient(#07101d, #07101d) padding-box, linear-gradient(135deg, var(--cyan), var(--blue)) border-box;
      box-shadow: 0 0 15px rgba(0,240,255,.45), inset 0 0 13px rgba(0,82,255,.20); backdrop-filter: blur(14px);
      animation: fabBreath 2.5s ease-in-out infinite; transition: opacity .2s, transform .2s, box-shadow .2s;
    }
    .fab::after { content: "MỚI"; position: absolute; top: -7px; right: -8px; padding: 2px 5px; color: #130615; border-radius: 5px; background: var(--cyan); font-size: .52rem; font-weight: 900; animation: blink 1.2s infinite; }
    .fab:hover { opacity: 1; transform: scale(1.1); box-shadow: 0 0 27px rgba(0,240,255,.78); }
    .fab:hover svg { animation: flicker .3s linear 2; }
    .fab:active { transform: scale(.96); }
    .bottom-bar {
      position: fixed; left: 0; right: 0; bottom: 0; z-index: 42; padding: 9px 0; border-top: 1px solid rgba(0,240,255,.28);
      background: rgba(5,9,17,.88); backdrop-filter: blur(18px);
    }
    .bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .bottom-inner p { margin: 0; color: #bfcee0; font-size: .8rem; }
    .bottom-inner b { color: var(--cyan); }
    .bottom-inner .primary-btn { min-height: 37px; padding: 8px 14px; font-size: .79rem; white-space: nowrap; }
    @keyframes fabBreath { 50% { opacity: 1; box-shadow: 0 0 25px rgba(0,240,255,.68); } }
    @keyframes blink { 50% { opacity: .28; } }
    @keyframes flicker { 30% { opacity: .25; } 60% { opacity: 1; } }

    @media (max-width: 1024px) {
      .desktop-nav { gap: 0; }
      .desktop-nav a { padding-inline: 8px; font-size: .81rem; }
      .hero-grid { gap: 36px; }
      .portrait-layout, .review-wall, .faq-layout { gap: 38px; }
      .cart-panel { padding: 42px; }
      .cart-inner { grid-template-columns: 1fr; }
      .cart-form { min-width: 0; width: min(100%, 470px); }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 28px, 620px); }
      .section { padding: 68px 0; }
      .nav-wrap { height: 66px; gap: 9px; }
      .brand { max-width: 172px; font-size: .71rem; }
      .brand-mark { width: 34px; height: 34px; flex-basis: 34px; }
      .desktop-nav { display: none; }
      .menu-button { display: grid; place-items: center; }
      .nav-actions { margin-left: auto; gap: 3px; }
      .login-btn { padding: 7px 6px; font-size: .76rem; }
      .signup-btn { min-height: 35px; padding: 8px 9px; font-size: .72rem; }
      .hero { min-height: auto; padding: 62px 0 59px; }
      .hero-grid, .portrait-layout, .ranking-wrap, .review-wall, .news-layout, .faq-layout, .footer-grid { grid-template-columns: 1fr; }
      .hero-grid { gap: 35px; }
      .hero-copy h1 { font-size: clamp(2.25rem, 10vw, 3.45rem); }
      .guide-cover { min-height: 405px; }
      .signal-list { grid-template-columns: repeat(2, 1fr); }
      .signal { border-bottom: 1px solid var(--line); }
      .signal:nth-child(3) { border-left: 1px solid var(--line); }
      .portrait-stage { min-height: 490px; max-width: 500px; }
      .split-copy .section-head { margin-top: 3px; }
      .review-intro { position: static; }
      .review-grid { margin-top: 8px; }
      .review:nth-child(2), .review:nth-child(3) { margin-top: 0; }
      .news-aside { max-width: 520px; }
      .cart-panel { padding: 34px 24px; }
      .footer-grid { gap: 27px; }
      .copyright { flex-direction: column; gap: 6px; }
    }
    @media (max-width: 520px) {
      body { font-size: 15px; }
      .container { width: min(100% - 24px, 460px); }
      .brand { max-width: 132px; font-size: .62rem; }
      .brand-mark { width: 31px; height: 31px; flex-basis: 31px; border-radius: 9px; }
      .menu-button { display: none; }
      .login-btn { font-size: .7rem; }
      .signup-btn { padding: 7px; font-size: .67rem; }
      .hero-copy > p { font-size: .95rem; }
      .hero-points { display: grid; gap: 8px; }
      .hero-actions .primary-btn, .hero-actions .secondary-btn { width: 100%; }
      .guide-cover { min-height: 382px; padding: 17px; }
      .cover-title { margin-top: 47px; font-size: 1.92rem; }
      .cover-index { width: 72%; padding: 15px 13px 13px; }
      .form-row, .cart-form { flex-direction: column; }
      .mini-form button, .cart-form input, .cart-form button { width: 100%; }
      .signal { min-height: 94px; padding: 13px 10px; gap: 9px; }
      .signal-icon { width: 33px; height: 33px; flex-basis: 33px; }
      .signal strong { font-size: .75rem; }
      .signal span { font-size: .64rem; }
      .portrait-stage { min-height: 425px; }
      .portrait-card { top: 35px; width: 66%; padding: 13px; }
      .portrait-card img { height: 203px; }
      .portrait-badge { bottom: 15px; padding: 10px 12px; }
      .rank-item { grid-template-columns: 32px 1fr 54px; gap: 8px; }
      .rank-item h3 { font-size: .87rem; }
      .rank-item p { font-size: .7rem; }
      .ranking-note { padding: 23px; }
      .review-grid { grid-template-columns: 1fr; }
      .news-item { grid-template-columns: 65px 1fr 18px; gap: 9px; }
      .news-item h3 { font-size: .89rem; }
      .news-item p { font-size: .72rem; }
      .section-head { display: block; margin-bottom: 26px; }
      .section-head .text-link { margin-top: 14px; }
      .bottom-inner p { max-width: 185px; font-size: .68rem; line-height: 1.35; }
      .bottom-inner .primary-btn { padding: 8px 10px; font-size: .69rem; }
      .fab { bottom: 84px; width: 52px; height: 52px; }
    }

/* roulang page: article */
:root {
      --bg: #08090f;
      --bg-deep: #05070d;
      --panel: rgba(13, 17, 30, .78);
      --panel-strong: #101728;
      --line: rgba(87, 158, 255, .20);
      --line-bright: rgba(0, 240, 255, .58);
      --blue: #0052ff;
      --cyan: #00f0ff;
      --mint: #7ef9dc;
      --text: #f6fbff;
      --muted: #aebdd1;
      --dim: #74849b;
      --danger: #ff5470;
      --radius-lg: 26px;
      --radius-md: 17px;
      --radius-sm: 12px;
      --shadow: 0 20px 60px rgba(0, 0, 0, .34);
      --glow: 0 0 26px rgba(0, 240, 255, .17);
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      min-width: 320px;
      overflow-x: hidden;
      color: var(--text);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      font-size: 16px;
      line-height: 1.62;
      background:
        radial-gradient(circle at 82% -10%, rgba(0, 82, 255, .25), transparent 31rem),
        radial-gradient(circle at 7% 35%, rgba(0, 240, 255, .08), transparent 28rem),
        var(--bg);
    }
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      z-index: -1;
      opacity: .19;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(118, 178, 255, .12) 1px, transparent 1px),
        linear-gradient(90deg, rgba(118, 178, 255, .12) 1px, transparent 1px);
      background-size: 44px 44px;
      mask-image: linear-gradient(to bottom, black, transparent 72%);
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    button:focus-visible, a:focus-visible, input:focus-visible {
      outline: 3px solid rgba(0, 240, 255, .65);
      outline-offset: 3px;
    }
    .container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
    .section { position: relative; padding: 84px 0; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--cyan);
      font-size: .73rem;
      letter-spacing: .14em;
      text-transform: uppercase;
      font-weight: 800;
    }
    .eyebrow::before {
      content: "";
      width: 24px;
      height: 2px;
      background: var(--cyan);
      box-shadow: 0 0 9px var(--cyan);
    }
    .lead {
      max-width: 690px;
      color: var(--muted);
      font-size: 1.05rem;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 45;
      border-bottom: 1px solid rgba(139, 191, 255, .13);
      background: rgba(5, 7, 13, .78);
      backdrop-filter: blur(18px);
    }
    .nav-wrap {
      height: 76px;
      display: flex;
      align-items: center;
      gap: 25px;
    }
    .brand {
      flex: 0 0 auto;
      display: flex;
      align-items: center;
      gap: 10px;
      max-width: 295px;
      font-size: .85rem;
      font-weight: 850;
      line-height: 1.14;
      letter-spacing: -.015em;
    }
    .brand-mark {
      position: relative;
      width: 38px;
      height: 38px;
      flex: 0 0 38px;
      display: grid;
      place-items: center;
      color: var(--cyan);
      border: 1px solid rgba(0, 240, 255, .64);
      border-radius: 11px;
      background: linear-gradient(135deg, rgba(0, 240, 255, .18), rgba(0, 82, 255, .16));
      box-shadow: inset 0 0 15px rgba(0, 240, 255, .12), 0 0 17px rgba(0, 240, 255, .13);
    }
    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 5px;
      border: 1px solid rgba(255,255,255,.3);
      transform: rotate(45deg);
    }
    .brand-mark span {
      position: relative;
      z-index: 1;
      font-size: .8rem;
      font-weight: 900;
    }
    .desktop-nav {
      display: flex;
      align-items: center;
      gap: 5px;
      margin-left: auto;
    }
    .desktop-nav a {
      padding: 9px 12px;
      color: var(--muted);
      border-radius: 9px;
      font-size: .88rem;
      font-weight: 700;
      transition: background .2s, color .2s;
    }
    .desktop-nav a:hover, .desktop-nav a.active {
      color: white;
      background: rgba(0, 82, 255, .16);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 9px;
    }
    .login-btn {
      padding: 9px 10px;
      border: 0;
      background: transparent;
      color: #d7e5f5;
      font-size: .85rem;
      font-weight: 750;
      transition: color .2s ease;
    }
    .login-btn:hover { color: var(--cyan); }
    .signup-btn, .primary-btn, .secondary-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 43px;
      padding: 11px 17px;
      border-radius: 10px;
      font-size: .87rem;
      font-weight: 850;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    }
    .signup-btn, .primary-btn {
      border: 1px solid #1585ff;
      color: #fff;
      background: linear-gradient(135deg, #0052ff, #0879f9 60%, #00c9ff);
      box-shadow: 0 8px 23px rgba(0, 82, 255, .28), inset 0 1px rgba(255,255,255,.22);
    }
    .signup-btn:hover, .primary-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 13px 30px rgba(0, 130, 255, .36), 0 0 20px rgba(0,240,255,.16);
    }
    .signup-btn:active, .primary-btn:active { transform: translateY(1px) scale(.98); }
    .secondary-btn {
      color: #dffaff;
      border: 1px solid rgba(0,240,255,.40);
      background: rgba(0, 240, 255, .06);
    }
    .secondary-btn:hover {
      border-color: var(--cyan);
      background: rgba(0,240,255,.12);
      transform: translateY(-2px);
    }
    .menu-button {
      display: none;
      border: 1px solid var(--line);
      color: white;
      background: rgba(0,82,255,.10);
      border-radius: 9px;
      width: 39px;
      height: 39px;
    }

    .article-banner {
      position: relative;
      isolation: isolate;
      min-height: 330px;
      display: flex;
      align-items: end;
      overflow: hidden;
      padding: 66px 0 52px;
      border-bottom: 1px solid var(--line);
    }
    .article-banner::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: -2;
      background:
        linear-gradient(90deg, rgba(5,7,13,.96) 3%, rgba(5,7,13,.83) 52%, rgba(5,7,13,.68)),
        url('/assets/images/backpic/back-2.jpg') center/cover;
    }
    .article-banner::after {
      content: "";
      position: absolute;
      right: 6%;
      top: -86px;
      width: 310px;
      height: 310px;
      border: 1px solid rgba(0, 240, 255, .28);
      border-radius: 50%;
      box-shadow: 0 0 0 34px rgba(0,82,255,.06), 0 0 80px rgba(0,240,255,.14);
      z-index: -1;
    }
    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      color: var(--muted);
      font-size: .83rem;
      font-weight: 650;
    }
    .breadcrumb a { transition: color .2s ease; }
    .breadcrumb a:hover { color: var(--cyan); }
    .breadcrumb svg { color: var(--dim); }
    .article-banner h1 {
      max-width: 900px;
      margin: 15px 0 16px;
      font-size: clamp(2rem, 4.35vw, 4rem);
      line-height: 1.08;
      letter-spacing: -.05em;
      font-weight: 900;
    }
    .article-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 11px 22px;
      align-items: center;
      color: #c5d6ec;
      font-size: .88rem;
    }
    .article-meta span {
      display: inline-flex;
      gap: 7px;
      align-items: center;
    }
    .meta-dot {
      width: 6px;
      height: 6px;
      border-radius: 999px;
      background: var(--cyan);
      box-shadow: 0 0 11px var(--cyan);
    }

    .article-shell {
      display: grid;
      grid-template-columns: minmax(0, 720px) 280px;
      justify-content: space-between;
      gap: 68px;
      align-items: start;
    }
    .article-main { min-width: 0; }
    .article-intro {
      margin-bottom: 34px;
      padding: 21px 24px;
      color: #dce8f7;
      border-left: 3px solid var(--cyan);
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      background: linear-gradient(90deg, rgba(0,240,255,.09), rgba(0,82,255,.025));
      font-size: 1.03rem;
    }
    .content-body {
      color: #d3deeb;
      font-size: 1.025rem;
      overflow-wrap: anywhere;
    }
    .content-body > *:first-child { margin-top: 0; }
    .content-body h2, .content-body h3, .content-body h4 {
      color: var(--text);
      letter-spacing: -.025em;
      line-height: 1.22;
      scroll-margin-top: 104px;
    }
    .content-body h2 {
      margin: 2.65em 0 .78em;
      font-size: clamp(1.55rem, 3vw, 2.05rem);
      font-weight: 860;
    }
    .content-body h3 {
      margin: 2em 0 .72em;
      font-size: 1.28rem;
      font-weight: 820;
    }
    .content-body p { margin: 0 0 1.22em; }
    .content-body a {
      color: var(--cyan);
      text-decoration: underline;
      text-decoration-color: rgba(0,240,255,.42);
      text-underline-offset: 3px;
    }
    .content-body a:hover { color: #fff; }
    .content-body ul, .content-body ol {
      margin: 0 0 1.4em;
      padding-left: 1.3em;
    }
    .content-body li { margin: .58em 0; padding-left: .2em; }
    .content-body li::marker { color: var(--cyan); font-weight: 800; }
    .content-body blockquote {
      margin: 1.75em 0;
      padding: 20px 23px;
      color: #e5f5ff;
      border: 1px solid rgba(0,240,255,.2);
      border-radius: var(--radius-sm);
      background: rgba(0, 82, 255, .09);
    }
    .content-body img {
      width: 100%;
      height: auto;
      margin: 1.8em 0;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow);
    }
    .content-body table {
      display: block;
      width: 100%;
      max-width: 100%;
      margin: 1.7em 0;
      overflow-x: auto;
      border-collapse: collapse;
      color: #dce8f7;
      font-size: .92rem;
      border: 1px solid var(--line);
      border-radius: 12px;
    }
    .content-body th, .content-body td {
      padding: 12px 14px;
      text-align: left;
      vertical-align: top;
      border-bottom: 1px solid var(--line);
    }
    .content-body th {
      color: #fff;
      background: rgba(0,82,255,.15);
      font-weight: 800;
    }

    .article-side {
      position: sticky;
      top: 104px;
      display: grid;
      gap: 17px;
    }
    .side-panel {
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: linear-gradient(145deg, rgba(17,26,45,.92), rgba(8,12,23,.86));
      box-shadow: 0 16px 38px rgba(0,0,0,.18);
    }
    .side-panel-cover {
      position: relative;
      min-height: 126px;
      background:
        linear-gradient(135deg, rgba(0,82,255,.32), rgba(0,240,255,.08)),
        url('/assets/images/coverpic/cover-3.jpg') center/cover;
    }
    .side-panel-cover::after {
      content: "LOL";
      position: absolute;
      left: 18px;
      bottom: 14px;
      color: white;
      font-size: 1.6rem;
      line-height: 1;
      font-weight: 950;
      letter-spacing: -.08em;
      text-shadow: 0 0 20px rgba(0,240,255,.75);
    }
    .side-panel-inner { padding: 18px; }
    .side-panel h2 {
      margin: 0 0 8px;
      color: white;
      font-size: 1.05rem;
      line-height: 1.3;
      font-weight: 850;
    }
    .side-panel p {
      margin: 0;
      color: var(--muted);
      font-size: .88rem;
      line-height: 1.55;
    }
    .quick-list {
      margin: 14px 0 0;
      padding: 0;
      list-style: none;
    }
    .quick-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 11px 0;
      color: #dce8f7;
      border-top: 1px solid rgba(87,158,255,.13);
      font-size: .87rem;
      font-weight: 680;
      line-height: 1.45;
    }
    .check-icon {
      flex: 0 0 18px;
      width: 18px;
      height: 18px;
      margin-top: 1px;
      display: grid;
      place-items: center;
      color: var(--cyan);
      border: 1px solid rgba(0,240,255,.42);
      border-radius: 50%;
      font-size: .68rem;
    }
    .side-category {
      display: flex;
      align-items: center;
      gap: 11px;
      padding: 14px 16px;
      transition: background .2s ease;
    }
    .side-category:hover { background: rgba(0,82,255,.12); }
    .side-category + .side-category { border-top: 1px solid var(--line); }
    .side-category .mini-icon {
      width: 34px;
      height: 34px;
      flex: 0 0 34px;
      display: grid;
      place-items: center;
      color: var(--cyan);
      border: 1px solid rgba(0,240,255,.24);
      border-radius: 10px;
      background: rgba(0,240,255,.06);
    }
    .side-category strong {
      display: block;
      color: white;
      font-size: .89rem;
      line-height: 1.25;
    }
    .side-category small {
      display: block;
      margin-top: 2px;
      color: var(--dim);
      font-size: .76rem;
    }

    .article-divider {
      height: 1px;
      margin: 60px 0;
      border: 0;
      background: linear-gradient(90deg, transparent, var(--line-bright), transparent);
    }
    .principles {
      padding: 37px 0 0;
    }
    .principles-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 40px 68px;
      align-items: center;
    }
    .principles-image {
      position: relative;
      overflow: hidden;
      min-height: 326px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: url('/assets/images/coverpic/cover-5.jpg') center/cover;
      box-shadow: var(--shadow);
    }
    .principles-image::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(145deg, rgba(0,82,255,.15), rgba(5,7,13,.7));
    }
    .signal-chip {
      position: absolute;
      z-index: 1;
      left: 18px;
      bottom: 18px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 9px 12px;
      color: #dcffff;
      border: 1px solid rgba(0,240,255,.4);
      border-radius: 999px;
      background: rgba(5,7,13,.74);
      backdrop-filter: blur(10px);
      font-size: .78rem;
      font-weight: 800;
    }
    .signal-chip i {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: #39f6a6;
      box-shadow: 0 0 10px #39f6a6;
    }
    .principles-copy h2, .faq-wrap h2, .cta-box h2 {
      margin: 11px 0 15px;
      color: white;
      font-size: clamp(1.65rem, 3.3vw, 2.55rem);
      line-height: 1.13;
      letter-spacing: -.045em;
      font-weight: 900;
    }
    .principles-copy > p { color: var(--muted); }
    .signal-points {
      display: grid;
      gap: 13px;
      margin-top: 25px;
    }
    .signal-point {
      display: grid;
      grid-template-columns: 42px 1fr;
      gap: 13px;
      align-items: start;
    }
    .signal-num {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      color: var(--cyan);
      border: 1px solid rgba(0,240,255,.3);
      border-radius: 12px;
      background: rgba(0,82,255,.12);
      font-size: .86rem;
      font-weight: 900;
    }
    .signal-point strong {
      display: block;
      color: white;
      font-size: .97rem;
    }
    .signal-point span {
      display: block;
      margin-top: 2px;
      color: var(--muted);
      font-size: .89rem;
    }

    .faq-section { padding-top: 78px; }
    .faq-wrap {
      display: grid;
      grid-template-columns: .78fr 1.22fr;
      gap: 55px;
      align-items: start;
    }
    .faq-note {
      padding: 20px;
      margin-top: 25px;
      color: #c8dbef;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: rgba(0,82,255,.08);
      font-size: .9rem;
    }
    .faq-list { display: grid; gap: 11px; }
    .faq-item {
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      background: rgba(13,17,30,.64);
      transition: border-color .2s ease, background .2s ease;
    }
    .faq-item:hover { border-color: rgba(0,240,255,.4); }
    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 18px 19px;
      color: white;
      border: 0;
      background: transparent;
      text-align: left;
      font-size: .98rem;
      font-weight: 790;
    }
    .faq-question svg {
      flex: 0 0 auto;
      color: var(--cyan);
      transition: transform .25s ease;
    }
    .faq-item.open {
      border-color: rgba(0,240,255,.42);
      background: rgba(0,82,255,.10);
    }
    .faq-item.open .faq-question svg { transform: rotate(45deg); }
    .faq-answer {
      display: none;
      padding: 0 19px 18px;
      color: var(--muted);
      font-size: .92rem;
    }
    .faq-item.open .faq-answer { display: block; }

    .cta-section { padding: 78px 0 110px; }
    .cta-box {
      position: relative;
      overflow: hidden;
      padding: clamp(30px, 5vw, 58px);
      border: 1px solid rgba(0,240,255,.28);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(100deg, rgba(8,18,42,.96), rgba(7,33,58,.80)),
        url('/assets/images/backpic/back-3.jpg') center/cover;
      box-shadow: var(--shadow), 0 0 44px rgba(0,82,255,.14);
    }
    .cta-box::after {
      content: "";
      position: absolute;
      right: -94px;
      top: -92px;
      width: 280px;
      height: 280px;
      border: 1px solid rgba(0,240,255,.33);
      border-radius: 50%;
      box-shadow: 0 0 0 31px rgba(0,240,255,.04), 0 0 50px rgba(0,240,255,.15);
    }
    .cta-content {
      position: relative;
      z-index: 1;
      max-width: 710px;
    }
    .cta-content p {
      max-width: 640px;
      margin: 0;
      color: #c4d7ea;
      font-size: 1.03rem;
    }
    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 25px;
    }
    .responsible-line {
      display: flex;
      align-items: flex-start;
      gap: 9px;
      margin-top: 20px;
      color: #9fb4cb;
      font-size: .8rem;
    }
    .responsible-line svg { flex: 0 0 auto; margin-top: 2px; color: var(--cyan); }

    .site-footer {
      padding: 56px 0 25px;
      border-top: 1px solid var(--line);
      background: rgba(4, 6, 12, .76);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr .7fr 1fr;
      gap: 48px;
      padding-bottom: 42px;
    }
    .footer-brand {
      display: flex;
      gap: 13px;
      align-items: flex-start;
    }
    .footer-brand strong {
      display: block;
      max-width: 470px;
      color: white;
      font-size: .96rem;
      line-height: 1.32;
    }
    .footer-brand p {
      max-width: 490px;
      margin: 8px 0 0;
      color: var(--dim);
      font-size: .86rem;
      line-height: 1.58;
    }
    .footer-col h3 {
      margin: 0 0 13px;
      color: #f4f9ff;
      font-size: .83rem;
      letter-spacing: .08em;
      text-transform: uppercase;
    }
    .footer-col a {
      display: block;
      width: fit-content;
      margin: 8px 0;
      color: var(--muted);
      font-size: .87rem;
      transition: color .2s ease, transform .2s ease;
    }
    .footer-col a:hover {
      color: var(--cyan);
      transform: translateX(3px);
    }
    .age-row {
      display: flex;
      gap: 11px;
      align-items: flex-start;
    }
    .age-badge {
      flex: 0 0 auto;
      display: grid;
      place-items: center;
      width: 38px;
      height: 38px;
      color: #fff;
      border: 1px solid rgba(255,84,112,.7);
      border-radius: 10px;
      background: rgba(255,84,112,.13);
      font-size: .82rem;
      font-weight: 900;
    }
    .age-row p {
      margin: 0;
      color: var(--dim);
      font-size: .82rem;
      line-height: 1.54;
    }
    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 15px;
      padding-top: 22px;
      color: #718198;
      border-top: 1px solid rgba(87,158,255,.13);
      font-size: .78rem;
    }
    .copyright a {
      color: #9fc9ff;
      transition: color .2s ease;
    }
    .copyright a:hover { color: var(--cyan); }

    .floating-support {
      position: fixed;
      left: 16px;
      bottom: 96px;
      z-index: 50;
      width: 56px;
      height: 56px;
      display: grid;
      place-items: center;
      color: var(--cyan);
      border: 1px solid transparent;
      border-radius: 17px;
      background:
        linear-gradient(#07101d, #07101d) padding-box,
        linear-gradient(135deg, var(--cyan), var(--blue)) border-box;
      box-shadow: 0 0 16px rgba(0,240,255,.46), inset 0 0 15px rgba(0,82,255,.18);
      opacity: .74;
      transition: transform .22s ease, opacity .22s ease, box-shadow .22s ease;
      animation: fabFloat 3s ease-in-out infinite;
    }
    .floating-support::after {
      content: "";
      position: absolute;
      top: 7px;
      right: 7px;
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--danger);
      box-shadow: 0 0 9px var(--danger);
      animation: blink 1.2s infinite;
    }
    .floating-support:hover {
      transform: scale(1.1);
      opacity: 1;
      box-shadow: 0 0 27px rgba(0,240,255,.72), inset 0 0 18px rgba(0,82,255,.25);
    }
    .floating-support:active { transform: scale(.94); }
    .floating-support:hover svg { animation: flicker .32s linear 2; }
    @keyframes fabFloat {
      0%, 100% { translate: 0 0; }
      50% { translate: 0 -6px; }
    }
    @keyframes blink { 50% { opacity: .18; } }
    @keyframes flicker {
      0%, 100% { opacity: 1; }
      40% { opacity: .15; }
      55% { opacity: 1; }
      70% { opacity: .35; }
    }

    @media (max-width: 1024px) {
      .desktop-nav { gap: 1px; }
      .desktop-nav a { padding: 8px 8px; font-size: .81rem; }
      .article-shell { grid-template-columns: minmax(0, 1fr) 242px; gap: 38px; }
      .footer-grid { gap: 28px; }
    }
    @media (max-width: 820px) {
      .nav-wrap { gap: 13px; }
      .desktop-nav { display: none; }
      .nav-actions { margin-left: auto; }
      .menu-button { display: grid; place-items: center; }
      .article-banner { min-height: 285px; padding: 50px 0 42px; }
      .article-shell { grid-template-columns: 1fr; }
      .article-side {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
      .principles-grid, .faq-wrap { grid-template-columns: 1fr; }
      .principles-image { min-height: 260px; }
      .faq-wrap { gap: 30px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .footer-grid > :first-child { grid-column: 1 / -1; }
    }
    @media (max-width: 520px) {
      .container { width: min(100% - 28px, 1180px); }
      .nav-wrap { height: 66px; gap: 7px; }
      .brand { max-width: 173px; gap: 7px; font-size: .69rem; }
      .brand-mark { width: 33px; height: 33px; flex-basis: 33px; border-radius: 9px; }
      .brand-mark span { font-size: .69rem; }
      .login-btn { display: none; }
      .signup-btn { min-height: 36px; padding: 8px 10px; font-size: .73rem; }
      .menu-button { width: 36px; height: 36px; }
      .article-banner { min-height: 275px; padding: 42px 0 35px; }
      .article-banner h1 { font-size: 2rem; }
      .article-meta { gap: 8px 14px; font-size: .78rem; }
      .section { padding: 58px 0; }
      .article-intro { padding: 17px; font-size: .96rem; }
      .content-body { font-size: .98rem; }
      .content-body h2 { font-size: 1.48rem; }
      .article-side { grid-template-columns: 1fr; }
      .principles { padding-top: 0; }
      .principles-image { min-height: 235px; }
      .faq-question { padding: 16px; font-size: .92rem; }
      .faq-answer { padding: 0 16px 16px; }
      .cta-section { padding: 58px 0 88px; }
      .cta-box { padding: 28px 21px; }
      .cta-actions .primary-btn, .cta-actions .secondary-btn { width: 100%; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
      .footer-grid > :first-child { grid-column: auto; }
      .copyright { flex-direction: column; font-size: .75rem; }
      .floating-support { bottom: 76px; width: 52px; height: 52px; }
    }

/* roulang page: category1 */
:root {
      --bg: #08090f;
      --bg-deep: #05070d;
      --panel: rgba(13, 17, 30, .78);
      --panel-strong: #101728;
      --line: rgba(87, 158, 255, .20);
      --line-bright: rgba(0, 240, 255, .58);
      --blue: #0052ff;
      --cyan: #00f0ff;
      --mint: #7ef9dc;
      --text: #f6fbff;
      --muted: #aebdd1;
      --dim: #74849b;
      --danger: #ff5470;
      --radius-lg: 26px;
      --radius-md: 17px;
      --radius-sm: 12px;
      --shadow: 0 20px 60px rgba(0, 0, 0, .34);
      --glow: 0 0 26px rgba(0, 240, 255, .17);
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      min-width: 320px;
      overflow-x: hidden;
      color: var(--text);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      font-size: 16px;
      line-height: 1.62;
      background:
        radial-gradient(circle at 82% -10%, rgba(0, 82, 255, .25), transparent 31rem),
        radial-gradient(circle at 7% 35%, rgba(0, 240, 255, .08), transparent 28rem),
        var(--bg);
    }
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      z-index: -1;
      opacity: .19;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(118, 178, 255, .12) 1px, transparent 1px),
        linear-gradient(90deg, rgba(118, 178, 255, .12) 1px, transparent 1px);
      background-size: 44px 44px;
      mask-image: linear-gradient(to bottom, black, transparent 72%);
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    button:focus-visible, a:focus-visible, input:focus-visible {
      outline: 3px solid rgba(0, 240, 255, .72);
      outline-offset: 3px;
    }
    .container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
    .section { position: relative; padding: 92px 0; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--cyan);
      font-size: .73rem;
      letter-spacing: .14em;
      text-transform: uppercase;
      font-weight: 800;
    }
    .eyebrow::before {
      content: "";
      width: 24px;
      height: 2px;
      background: var(--cyan);
      box-shadow: 0 0 9px var(--cyan);
    }
    .lead {
      max-width: 690px;
      color: var(--muted);
      font-size: 1.05rem;
      margin: 15px 0 0;
    }
    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 30px;
      margin-bottom: 39px;
    }
    .section-title {
      max-width: 760px;
      margin: 10px 0 0;
      font-size: clamp(1.9rem, 3.4vw, 3.1rem);
      line-height: 1.12;
      letter-spacing: -.04em;
      font-weight: 900;
    }
    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--cyan);
      font-size: .9rem;
      font-weight: 800;
      white-space: nowrap;
      transition: color .2s ease, transform .2s ease;
    }
    .text-link:hover { color: #fff; transform: translateX(3px); }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 45;
      border-bottom: 1px solid rgba(139, 191, 255, .13);
      background: rgba(5, 7, 13, .78);
      backdrop-filter: blur(18px);
    }
    .nav-wrap {
      height: 76px;
      display: flex;
      align-items: center;
      gap: 25px;
    }
    .brand {
      flex: 0 0 auto;
      display: flex;
      align-items: center;
      gap: 10px;
      max-width: 295px;
      font-size: .85rem;
      font-weight: 850;
      line-height: 1.14;
      letter-spacing: -.015em;
    }
    .brand-mark {
      position: relative;
      width: 38px;
      height: 38px;
      flex: 0 0 38px;
      display: grid;
      place-items: center;
      color: var(--cyan);
      border: 1px solid rgba(0, 240, 255, .64);
      border-radius: 11px;
      background: linear-gradient(135deg, rgba(0, 240, 255, .18), rgba(0, 82, 255, .16));
      box-shadow: inset 0 0 15px rgba(0, 240, 255, .12), 0 0 17px rgba(0, 240, 255, .13);
    }
    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 5px;
      border: 1px solid rgba(255,255,255,.3);
      transform: rotate(45deg);
    }
    .brand-mark span { position: relative; z-index: 1; font-size: .8rem; font-weight: 900; }
    .desktop-nav { display: flex; align-items: center; gap: 5px; margin-left: auto; }
    .desktop-nav a {
      padding: 9px 12px;
      color: var(--muted);
      border-radius: 9px;
      font-size: .88rem;
      font-weight: 700;
      transition: background .2s, color .2s;
    }
    .desktop-nav a:hover, .desktop-nav a.active { color: white; background: rgba(0, 82, 255, .16); }
    .nav-actions { display: flex; align-items: center; gap: 9px; }
    .login-btn {
      padding: 9px 10px;
      border: 0;
      background: transparent;
      color: #d7e5f5;
      font-size: .85rem;
      font-weight: 750;
      transition: color .2s ease;
    }
    .login-btn:hover { color: var(--cyan); }
    .signup-btn, .primary-btn, .secondary-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 43px;
      padding: 11px 17px;
      border-radius: 10px;
      font-size: .87rem;
      font-weight: 850;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    }
    .signup-btn, .primary-btn {
      border: 1px solid #1585ff;
      color: #fff;
      background: linear-gradient(135deg, #0052ff, #0879f9 60%, #00c9ff);
      box-shadow: 0 8px 23px rgba(0, 82, 255, .28), inset 0 1px rgba(255,255,255,.22);
    }
    .signup-btn:hover, .primary-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 13px 30px rgba(0, 130, 255, .36), 0 0 20px rgba(0,240,255,.16);
    }
    .signup-btn:active, .primary-btn:active { transform: translateY(1px) scale(.98); }
    .secondary-btn {
      color: #dffaff;
      border: 1px solid rgba(0,240,255,.40);
      background: rgba(0, 240, 255, .06);
    }
    .secondary-btn:hover { border-color: var(--cyan); background: rgba(0,240,255,.12); transform: translateY(-2px); }
    .menu-button {
      display: none;
      border: 1px solid var(--line);
      color: white;
      background: rgba(0,82,255,.10);
      border-radius: 9px;
      width: 39px;
      height: 39px;
    }

    .page-hero {
      position: relative;
      isolation: isolate;
      overflow: hidden;
      min-height: 568px;
      display: flex;
      align-items: center;
      padding: 82px 0 74px;
      border-bottom: 1px solid rgba(87, 158, 255, .12);
    }
    .page-hero::before {
      content: "";
      position: absolute;
      z-index: -2;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(5,7,13,.98) 0%, rgba(5,7,13,.86) 48%, rgba(5,7,13,.64) 100%),
        url('/assets/images/backpic/back-2.jpg') center/cover;
    }
    .page-hero::after {
      content: "";
      position: absolute;
      z-index: -1;
      width: 520px;
      height: 520px;
      right: -170px;
      top: 20px;
      border: 1px solid rgba(0,240,255,.18);
      border-radius: 50%;
      box-shadow: 0 0 0 45px rgba(0,82,255,.05), 0 0 0 96px rgba(0,240,255,.025), 0 0 90px rgba(0,240,255,.14);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.06fr) minmax(360px, .94fr);
      gap: 64px;
      align-items: center;
    }
    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      color: #91a5be;
      font-size: .81rem;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .breadcrumb a:hover { color: var(--cyan); }
    .hero-copy h1 {
      margin: 15px 0 19px;
      max-width: 710px;
      font-size: clamp(2.45rem, 5.15vw, 4.5rem);
      font-weight: 900;
      letter-spacing: -.065em;
      line-height: 1.02;
    }
    .hero-copy h1 em { color: var(--cyan); font-style: normal; text-shadow: 0 0 24px rgba(0,240,255,.24); }
    .hero-copy p {
      max-width: 665px;
      margin: 0;
      color: #c0cede;
      font-size: 1.05rem;
    }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
    .hero-note {
      display: flex;
      align-items: flex-start;
      gap: 9px;
      margin-top: 19px;
      color: #92a8c0;
      font-size: .82rem;
    }
    .hero-note svg { flex: 0 0 auto; color: var(--mint); margin-top: 4px; }

    .check-panel {
      position: relative;
      overflow: hidden;
      padding: 26px;
      border: 1px solid rgba(0, 240, 255, .28);
      border-radius: var(--radius-lg);
      background: linear-gradient(145deg, rgba(18, 28, 49, .88), rgba(7, 10, 19, .84));
      box-shadow: var(--shadow), var(--glow), inset 0 1px rgba(255,255,255,.08);
      backdrop-filter: blur(15px);
    }
    .check-panel::before {
      content: "";
      position: absolute;
      width: 180px;
      height: 180px;
      right: -80px;
      top: -95px;
      border-radius: 50%;
      background: rgba(0, 240, 255, .12);
      filter: blur(25px);
    }
    .panel-top {
      position: relative;
      display: flex;
      justify-content: space-between;
      gap: 15px;
      padding-bottom: 18px;
      border-bottom: 1px solid var(--line);
    }
    .panel-top strong { display: block; font-size: 1.08rem; letter-spacing: -.02em; }
    .panel-top span { display: block; margin-top: 2px; color: var(--dim); font-size: .78rem; }
    .scan-status {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      height: fit-content;
      padding: 6px 9px;
      color: #8dffe2;
      border: 1px solid rgba(126,249,220,.30);
      border-radius: 999px;
      background: rgba(126,249,220,.08);
      font-size: .68rem;
      font-weight: 850;
      white-space: nowrap;
    }
    .pulse-dot {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--mint);
      box-shadow: 0 0 0 0 rgba(126,249,220,.65);
      animation: pulse 1.8s infinite;
    }
    .criterion-list { position: relative; display: grid; gap: 11px; margin: 19px 0; }
    .criterion {
      display: grid;
      grid-template-columns: 33px 1fr auto;
      align-items: center;
      gap: 11px;
      padding: 10px 0;
      border-bottom: 1px solid rgba(87,158,255,.13);
    }
    .criterion:last-child { border-bottom: 0; }
    .criterion-icon {
      width: 31px;
      height: 31px;
      display: grid;
      place-items: center;
      color: var(--cyan);
      border: 1px solid rgba(0,240,255,.23);
      border-radius: 9px;
      background: rgba(0,240,255,.07);
    }
    .criterion b { display: block; font-size: .86rem; }
    .criterion small { display: block; margin-top: 1px; color: var(--dim); font-size: .72rem; }
    .criterion-score { color: #daefff; font-size: .78rem; font-weight: 850; }
    .panel-footer {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 13px 14px;
      border: 1px solid rgba(0,82,255,.3);
      border-radius: 12px;
      color: #b9d8ff;
      background: rgba(0,82,255,.10);
      font-size: .8rem;
    }
    .panel-footer svg { color: var(--cyan); flex: 0 0 auto; }

    .trust-strip {
      border-top: 1px solid rgba(87,158,255,.13);
      border-bottom: 1px solid rgba(87,158,255,.13);
      background: rgba(7, 10, 18, .66);
    }
    .trust-items {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      min-height: 114px;
    }
    .trust-item {
      display: flex;
      align-items: center;
      gap: 13px;
      padding: 21px 26px;
      border-right: 1px solid rgba(87,158,255,.12);
    }
    .trust-item:first-child { border-left: 1px solid rgba(87,158,255,.12); }
    .trust-icon {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      flex: 0 0 38px;
      color: var(--cyan);
      border: 1px solid var(--line);
      border-radius: 11px;
      background: rgba(0,82,255,.09);
    }
    .trust-item strong { display: block; font-size: .84rem; }
    .trust-item span { display: block; margin-top: 1px; color: var(--dim); font-size: .74rem; line-height: 1.35; }

    .signal-layout {
      display: grid;
      grid-template-columns: .84fr 1.16fr;
      gap: 68px;
      align-items: start;
    }
    .signal-sticky { position: sticky; top: 108px; }
    .signal-sticky .section-title { margin-bottom: 17px; }
    .signal-sticky .lead { font-size: 1rem; }
    .mini-rule {
      display: flex;
      gap: 11px;
      margin-top: 26px;
      padding-top: 24px;
      border-top: 1px solid var(--line);
      color: #c8d7e8;
      font-size: .88rem;
    }
    .mini-rule svg { color: var(--cyan); flex: 0 0 auto; margin-top: 4px; }
    .signal-list { display: grid; gap: 16px; }
    .signal-row {
      display: grid;
      grid-template-columns: 64px 1fr;
      gap: 19px;
      padding: 23px 0;
      border-bottom: 1px solid var(--line);
    }
    .signal-row:first-child { padding-top: 0; }
    .signal-num {
      width: 49px;
      height: 49px;
      display: grid;
      place-items: center;
      color: var(--cyan);
      border: 1px solid rgba(0,240,255,.32);
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(0,240,255,.12), rgba(0,82,255,.11));
      font-size: .88rem;
      font-weight: 900;
      box-shadow: inset 0 0 18px rgba(0,240,255,.06);
    }
    .signal-row h3 { margin: 1px 0 6px; font-size: 1.13rem; letter-spacing: -.02em; }
    .signal-row p { margin: 0; color: var(--muted); font-size: .93rem; }

    .score-section {
      overflow: hidden;
      background:
        linear-gradient(90deg, rgba(7,10,18,.97), rgba(7,10,18,.77)),
        url('/assets/images/backpic/back-3.jpg') center/cover;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }
    .score-layout {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 72px;
      align-items: center;
    }
    .score-card {
      padding: 29px;
      border: 1px solid rgba(0,240,255,.25);
      border-radius: var(--radius-lg);
      background: rgba(8, 13, 24, .78);
      box-shadow: var(--shadow);
      backdrop-filter: blur(14px);
    }
    .score-card h3 { margin: 0; font-size: 1.35rem; letter-spacing: -.03em; }
    .score-card > p { color: var(--muted); margin: 7px 0 25px; font-size: .91rem; }
    .meter { margin: 17px 0; }
    .meter-label {
      display: flex;
      justify-content: space-between;
      gap: 15px;
      margin-bottom: 7px;
      color: #d7e4f2;
      font-size: .8rem;
      font-weight: 750;
    }
    .meter-label span:last-child { color: var(--cyan); }
    .meter-track {
      height: 8px;
      overflow: hidden;
      border-radius: 999px;
      background: rgba(132,157,190,.15);
    }
    .meter-fill {
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--blue), var(--cyan));
      box-shadow: 0 0 13px rgba(0,240,255,.54);
    }
    .score-copy .section-title { max-width: 620px; }
    .score-copy .lead { margin-bottom: 25px; }
    .check-points { display: grid; gap: 12px; }
    .check-point {
      display: flex;
      align-items: flex-start;
      gap: 11px;
      color: #cfdeef;
      font-size: .92rem;
    }
    .check-point i {
      width: 21px;
      height: 21px;
      display: grid;
      place-items: center;
      flex: 0 0 21px;
      color: var(--mint);
      border-radius: 50%;
      background: rgba(126,249,220,.11);
      font-style: normal;
      font-size: .72rem;
      font-weight: 900;
    }

    .scenario-grid {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 24px;
      align-items: stretch;
    }
    .scenario-feature {
      position: relative;
      min-height: 450px;
      overflow: hidden;
      display: flex;
      align-items: flex-end;
      padding: 34px;
      border: 1px solid rgba(0,240,255,.25);
      border-radius: var(--radius-lg);
      background: #0d1424;
    }
    .scenario-feature img {
      position: absolute;
      z-index: 0;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: .57;
      transition: transform .5s ease;
    }
    .scenario-feature:hover img { transform: scale(1.05); }
    .scenario-feature::after {
      content: "";
      position: absolute;
      z-index: 1;
      inset: 0;
      background: linear-gradient(180deg, rgba(5,7,13,.06), rgba(5,7,13,.95) 88%);
    }
    .feature-content { position: relative; z-index: 2; max-width: 520px; }
    .feature-content h3 { margin: 10px 0 10px; font-size: clamp(1.55rem, 3vw, 2.35rem); line-height: 1.13; letter-spacing: -.045em; }
    .feature-content p { margin: 0; color: #cfdeed; font-size: .95rem; }
    .scenario-stack { display: grid; grid-template-rows: 1fr 1fr; gap: 24px; }
    .scenario-card {
      position: relative;
      overflow: hidden;
      display: grid;
      grid-template-columns: 128px 1fr;
      gap: 20px;
      align-items: center;
      min-height: 213px;
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: rgba(13,17,30,.69);
      transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
    }
    .scenario-card:hover {
      transform: translateY(-4px);
      border-color: rgba(0,240,255,.54);
      box-shadow: var(--glow);
    }
    .scenario-card img {
      height: 169px;
      width: 128px;
      border-radius: 11px;
      object-fit: cover;
      opacity: .84;
    }
    .scenario-card h3 { margin: 6px 0; font-size: 1.09rem; letter-spacing: -.02em; }
    .scenario-card p { margin: 0; color: var(--muted); font-size: .86rem; }
    .tag {
      display: inline-flex;
      align-items: center;
      padding: 4px 8px;
      color: var(--cyan);
      border: 1px solid rgba(0,240,255,.25);
      border-radius: 999px;
      background: rgba(0,240,255,.07);
      font-size: .66rem;
      font-weight: 850;
      letter-spacing: .08em;
      text-transform: uppercase;
    }

    .steps-wrap { display: grid; grid-template-columns: .72fr 1.28fr; gap: 72px; align-items: start; }
    .steps-list { counter-reset: steps; }
    .step {
      position: relative;
      display: grid;
      grid-template-columns: 52px 1fr;
      gap: 17px;
      padding: 0 0 28px;
    }
    .step:not(:last-child)::before {
      content: "";
      position: absolute;
      left: 25px;
      top: 52px;
      bottom: 5px;
      width: 1px;
      background: linear-gradient(var(--line-bright), rgba(0,240,255,0));
    }
    .step-number {
      width: 51px;
      height: 51px;
      display: grid;
      place-items: center;
      color: #07111d;
      border-radius: 14px;
      background: var(--cyan);
      box-shadow: 0 0 20px rgba(0,240,255,.25);
      font-weight: 900;
    }
    .step h3 { margin: 8px 0 5px; font-size: 1.08rem; }
    .step p { margin: 0; color: var(--muted); font-size: .91rem; }
    .notice-box {
      margin-top: 25px;
      padding: 18px;
      border-left: 3px solid var(--cyan);
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      background: rgba(0,240,255,.055);
      color: #c3dcec;
      font-size: .87rem;
    }

    .faq-layout {
      display: grid;
      grid-template-columns: .72fr 1.28fr;
      gap: 72px;
      align-items: start;
    }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-button {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
      padding: 21px 0;
      border: 0;
      background: transparent;
      color: #f3f9ff;
      text-align: left;
      font-size: 1rem;
      font-weight: 800;
    }
    .faq-button svg {
      flex: 0 0 auto;
      color: var(--cyan);
      transition: transform .25s ease;
    }
    .faq-item.open .faq-button svg { transform: rotate(45deg); }
    .faq-answer {
      display: grid;
      grid-template-rows: 0fr;
      transition: grid-template-rows .3s ease;
    }
    .faq-answer > div { overflow: hidden; }
    .faq-answer p { margin: 0; padding: 0 0 0; color: var(--muted); font-size: .92rem; }
    .faq-item.open .faq-answer { grid-template-rows: 1fr; }
    .faq-item.open .faq-answer p { padding-bottom: 21px; }

    .cta-section { padding: 74px 0 116px; }
    .cta-box {
      position: relative;
      overflow: hidden;
      padding: clamp(31px, 5vw, 59px);
      border: 1px solid rgba(0,240,255,.35);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(104deg, rgba(9, 19, 40, .96), rgba(7, 22, 42, .80)),
        url('/assets/images/backpic/back-1.jpg') center/cover;
      box-shadow: var(--shadow), 0 0 32px rgba(0,82,255,.16);
      text-align: center;
    }
    .cta-box::before {
      content: "";
      position: absolute;
      width: 370px;
      height: 370px;
      top: -230px;
      left: calc(50% - 185px);
      border-radius: 50%;
      background: rgba(0,240,255,.15);
      filter: blur(28px);
    }
    .cta-content { position: relative; z-index: 1; max-width: 755px; margin: 0 auto; }
    .cta-content .eyebrow { justify-content: center; }
    .cta-content h2 {
      margin: 12px 0 13px;
      font-size: clamp(1.8rem, 3.8vw, 3.1rem);
      line-height: 1.1;
      letter-spacing: -.045em;
      font-weight: 900;
    }
    .cta-content p { margin: 0 auto; max-width: 645px; color: #bed1e5; }
    .cta-form {
      display: flex;
      max-width: 550px;
      gap: 9px;
      margin: 27px auto 0;
      padding: 6px;
      border: 1px solid rgba(125,183,255,.29);
      border-radius: 13px;
      background: rgba(3,8,18,.58);
    }
    .cta-form input {
      min-width: 0;
      flex: 1;
      padding: 10px 12px;
      color: white;
      border: 0;
      outline: none;
      background: transparent;
      font-size: .88rem;
    }
    .cta-form input::placeholder { color: #8495ad; }
    .form-note { margin-top: 11px !important; color: #8ea5bd !important; font-size: .75rem; }

    .site-footer {
      padding: 56px 0 88px;
      border-top: 1px solid rgba(87,158,255,.15);
      background: rgba(4, 6, 11, .76);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr .7fr .9fr;
      gap: 60px;
      padding-bottom: 38px;
    }
    .footer-brand { display: flex; align-items: flex-start; gap: 12px; }
    .footer-brand strong { display: block; max-width: 430px; font-size: .94rem; line-height: 1.35; }
    .footer-brand p { margin: 8px 0 0; max-width: 480px; color: var(--dim); font-size: .82rem; }
    .footer-col h3 { margin: 3px 0 13px; color: #eaf5ff; font-size: .82rem; letter-spacing: .05em; text-transform: uppercase; }
    .footer-col > a {
      display: block;
      width: fit-content;
      margin: 8px 0;
      color: #91a4ba;
      font-size: .84rem;
      transition: color .2s ease;
    }
    .footer-col > a:hover { color: var(--cyan); }
    .age-row { display: flex; align-items: flex-start; gap: 11px; }
    .age-badge {
      display: inline-grid;
      place-items: center;
      min-width: 38px;
      height: 30px;
      color: #ff8a9d;
      border: 1px solid rgba(255,84,112,.46);
      border-radius: 8px;
      background: rgba(255,84,112,.09);
      font-size: .78rem;
      font-weight: 900;
    }
    .age-row p { margin: 0; color: #8fa1b8; font-size: .78rem; line-height: 1.5; }
    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding-top: 22px;
      border-top: 1px solid rgba(87,158,255,.12);
      color: #71849b;
      font-size: .75rem;
    }
    .copyright a { color: #9fcaee; }
    .copyright a:hover { color: var(--cyan); }

    .floating-fab {
      position: fixed;
      left: 16px;
      bottom: 96px;
      z-index: 50;
      width: 58px;
      height: 58px;
      display: grid;
      place-items: center;
      overflow: hidden;
      color: var(--cyan);
      border: 1px solid transparent;
      border-radius: 18px 8px 18px 8px;
      background:
        linear-gradient(#07101f, #07101f) padding-box,
        linear-gradient(135deg, var(--cyan), var(--blue), var(--cyan)) border-box;
      box-shadow: 0 0 15px rgba(0,240,255,.48), inset 0 0 18px rgba(0,82,255,.18);
      opacity: .68;
      transition: transform .25s ease, opacity .25s ease, box-shadow .25s ease;
      animation: fabBreathe 2.4s ease-in-out infinite;
    }
    .floating-fab::after {
      content: "MỚI";
      position: absolute;
      top: 4px;
      right: 5px;
      color: #ff79b1;
      font-size: .44rem;
      font-weight: 900;
      letter-spacing: .03em;
      animation: blink 1.2s infinite;
    }
    .floating-fab svg { filter: drop-shadow(0 0 6px rgba(0,240,255,.9)); transition: transform .35s ease; }
    .floating-fab:hover { opacity: 1; transform: scale(1.1); box-shadow: 0 0 27px rgba(0,240,255,.72), inset 0 0 18px rgba(0,82,255,.28); }
    .floating-fab:hover svg { animation: flicker .28s linear 2; }
    .floating-fab:active { transform: scale(.95); border-color: #ff4fa6; }

    .sticky-cta {
      position: fixed;
      z-index: 40;
      bottom: 0;
      left: 0;
      right: 0;
      border-top: 1px solid rgba(0,240,255,.25);
      background: rgba(5, 8, 15, .88);
      box-shadow: 0 -12px 30px rgba(0,0,0,.19);
      backdrop-filter: blur(16px);
    }
    .sticky-inner {
      min-height: 67px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .sticky-message { display: flex; align-items: center; gap: 10px; }
    .sticky-message svg { color: var(--cyan); flex: 0 0 auto; }
    .sticky-message strong { display: block; font-size: .84rem; }
    .sticky-message span { display: block; color: var(--dim); font-size: .73rem; }
    .sticky-cta .primary-btn { min-height: 39px; padding: 9px 15px; white-space: nowrap; }

    @keyframes pulse {
      70% { box-shadow: 0 0 0 7px rgba(126,249,220,0); }
      100% { box-shadow: 0 0 0 0 rgba(126,249,220,0); }
    }
    @keyframes fabBreathe {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-5px); }
    }
    @keyframes blink { 50% { opacity: .25; } }
    @keyframes flicker {
      0%,100% { opacity: 1; }
      40% { opacity: .35; }
      60% { opacity: .9; }
    }

    @media (max-width: 1024px) {
      .desktop-nav a { padding: 8px 8px; }
      .brand { max-width: 240px; font-size: .77rem; }
      .hero-grid, .score-layout, .steps-wrap, .faq-layout, .signal-layout { gap: 42px; }
      .scenario-card { grid-template-columns: 104px 1fr; }
      .scenario-card img { width: 104px; height: 160px; }
      .footer-grid { gap: 35px; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 30px, 1180px); }
      .section { padding: 68px 0; }
      .desktop-nav { display: none; }
      .menu-button { display: grid; place-items: center; }
      .nav-wrap { height: 68px; gap: 10px; }
      .brand { max-width: none; margin-right: auto; font-size: .72rem; }
      .brand-mark { width: 34px; height: 34px; flex-basis: 34px; }
      .login-btn { display: none; }
      .signup-btn { min-height: 38px; padding: 9px 10px; font-size: .76rem; }
      .page-hero { min-height: auto; padding: 64px 0 58px; }
      .hero-grid, .score-layout, .signal-layout, .steps-wrap, .faq-layout { grid-template-columns: 1fr; gap: 40px; }
      .hero-copy h1 { font-size: clamp(2.25rem, 9vw, 3.6rem); }
      .check-panel { max-width: 610px; }
      .trust-items { grid-template-columns: repeat(2, 1fr); }
      .trust-item:nth-child(3) { border-left: 1px solid rgba(87,158,255,.12); }
      .signal-sticky { position: static; }
      .scenario-grid { grid-template-columns: 1fr; }
      .scenario-feature { min-height: 370px; }
      .section-head { align-items: start; flex-direction: column; gap: 13px; margin-bottom: 30px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .footer-grid > :first-child { grid-column: 1 / -1; }
      .copyright { flex-direction: column; gap: 5px; }
    }
    @media (max-width: 520px) {
      body { font-size: 15px; }
      .container { width: min(100% - 28px, 1180px); }
      .brand { font-size: .65rem; }
      .brand-mark { width: 31px; height: 31px; flex-basis: 31px; border-radius: 9px; }
      .brand-mark span { font-size: .66rem; }
      .signup-btn { padding: 8px 9px; font-size: .68rem; }
      .menu-button { width: 36px; height: 36px; }
      .page-hero { padding-top: 49px; }
      .hero-copy p, .lead { font-size: .96rem; }
      .hero-actions { display: grid; grid-template-columns: 1fr; }
      .hero-actions .primary-btn, .hero-actions .secondary-btn { width: 100%; }
      .check-panel { padding: 20px; }
      .criterion { grid-template-columns: 31px 1fr; }
      .criterion-score { grid-column: 2; }
      .trust-items { grid-template-columns: 1fr; }
      .trust-item, .trust-item:first-child, .trust-item:nth-child(3) {
        border-left: 0;
        border-right: 0;
        border-bottom: 1px solid rgba(87,158,255,.12);
      }
      .trust-item:last-child { border-bottom: 0; }
      .signal-row { grid-template-columns: 50px 1fr; gap: 13px; }
      .signal-num { width: 42px; height: 42px; }
      .scenario-feature { min-height: 390px; padding: 24px; }
      .scenario-stack { gap: 15px; }
      .scenario-card { grid-template-columns: 83px 1fr; gap: 14px; min-height: 0; padding: 15px; }
      .scenario-card img { width: 83px; height: 124px; }
      .score-card { padding: 21px; }
      .cta-box { padding: 31px 20px; }
      .cta-form { flex-direction: column; padding: 7px; }
      .cta-form .primary-btn { width: 100%; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
      .footer-grid > :first-child { grid-column: auto; }
      .sticky-message span { display: none; }
      .sticky-message strong { font-size: .75rem; }
      .sticky-inner { min-height: 64px; gap: 10px; }
      .sticky-cta .primary-btn { padding: 9px 11px; font-size: .75rem; }
      .floating-fab { width: 52px; height: 52px; left: 13px; bottom: 82px; }
    }

/* roulang page: category2 */
:root {
      --bg: #08090f;
      --bg-deep: #05070d;
      --panel: rgba(13, 17, 30, .78);
      --panel-strong: #101728;
      --line: rgba(87, 158, 255, .20);
      --line-bright: rgba(0, 240, 255, .58);
      --blue: #0052ff;
      --cyan: #00f0ff;
      --mint: #7ef9dc;
      --text: #f6fbff;
      --muted: #aebdd1;
      --dim: #74849b;
      --danger: #ff5470;
      --gold: #ffd15c;
      --radius-lg: 26px;
      --radius-md: 17px;
      --radius-sm: 12px;
      --shadow: 0 20px 60px rgba(0, 0, 0, .34);
      --glow: 0 0 26px rgba(0, 240, 255, .17);
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      min-width: 320px;
      overflow-x: hidden;
      color: var(--text);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      font-size: 16px;
      line-height: 1.62;
      background:
        radial-gradient(circle at 82% -10%, rgba(0, 82, 255, .25), transparent 31rem),
        radial-gradient(circle at 7% 35%, rgba(0, 240, 255, .08), transparent 28rem),
        var(--bg);
    }
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      z-index: -1;
      opacity: .19;
      pointer-events: none;
      background-image:
        linear-gradient(rgba(118, 178, 255, .12) 1px, transparent 1px),
        linear-gradient(90deg, rgba(118, 178, 255, .12) 1px, transparent 1px);
      background-size: 44px 44px;
      mask-image: linear-gradient(to bottom, black, transparent 72%);
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    button:focus-visible, a:focus-visible, input:focus-visible, summary:focus-visible {
      outline: 3px solid rgba(0, 240, 255, .65);
      outline-offset: 3px;
    }

    .container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
    .section { position: relative; padding: 88px 0; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--cyan);
      font-size: .73rem;
      letter-spacing: .14em;
      text-transform: uppercase;
      font-weight: 800;
    }
    .eyebrow::before {
      width: 24px;
      height: 2px;
      content: "";
      background: var(--cyan);
      box-shadow: 0 0 9px var(--cyan);
    }
    .lead { max-width: 710px; color: var(--muted); font-size: 1.06rem; }
    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 30px;
      margin-bottom: 38px;
    }
    h1, h2, h3, p { margin-top: 0; }
    h2 {
      margin-bottom: 13px;
      font-size: clamp(1.8rem, 3vw, 2.75rem);
      line-height: 1.12;
      letter-spacing: -.035em;
    }
    h3 { line-height: 1.25; }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 45;
      border-bottom: 1px solid rgba(139, 191, 255, .13);
      background: rgba(5, 7, 13, .78);
      backdrop-filter: blur(18px);
    }
    .nav-wrap { display: flex; align-items: center; gap: 25px; height: 76px; }
    .brand {
      display: flex;
      flex: 0 0 auto;
      align-items: center;
      gap: 10px;
      max-width: 295px;
      font-size: .85rem;
      font-weight: 850;
      line-height: 1.14;
      letter-spacing: -.015em;
    }
    .brand-mark {
      position: relative;
      display: grid;
      flex: 0 0 38px;
      width: 38px;
      height: 38px;
      place-items: center;
      color: var(--cyan);
      border: 1px solid rgba(0, 240, 255, .64);
      border-radius: 11px;
      background: linear-gradient(135deg, rgba(0, 240, 255, .18), rgba(0, 82, 255, .16));
      box-shadow: inset 0 0 15px rgba(0, 240, 255, .12), 0 0 17px rgba(0, 240, 255, .13);
    }
    .brand-mark::after {
      position: absolute;
      inset: 5px;
      content: "";
      border: 1px solid rgba(255,255,255,.3);
      transform: rotate(45deg);
    }
    .brand-mark span { position: relative; z-index: 1; font-size: .8rem; font-weight: 900; }
    .desktop-nav { display: flex; align-items: center; gap: 5px; margin-left: auto; }
    .desktop-nav a {
      padding: 9px 12px;
      color: var(--muted);
      border-radius: 9px;
      font-size: .88rem;
      font-weight: 700;
      transition: background .2s, color .2s;
    }
    .desktop-nav a:hover, .desktop-nav a.active { color: white; background: rgba(0, 82, 255, .16); }
    .nav-actions { display: flex; align-items: center; gap: 9px; }
    .login-btn {
      padding: 9px 10px;
      color: #d7e5f5;
      border: 0;
      background: transparent;
      font-size: .85rem;
      font-weight: 750;
      transition: color .2s ease;
    }
    .login-btn:hover { color: var(--cyan); }
    .signup-btn, .primary-btn, .secondary-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 43px;
      padding: 11px 17px;
      border-radius: 10px;
      font-size: .87rem;
      font-weight: 850;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    }
    .signup-btn, .primary-btn {
      color: #fff;
      border: 1px solid #1585ff;
      background: linear-gradient(135deg, #0052ff, #0879f9 60%, #00c9ff);
      box-shadow: 0 8px 23px rgba(0, 82, 255, .28), inset 0 1px rgba(255,255,255,.22);
    }
    .signup-btn:hover, .primary-btn:hover {
      box-shadow: 0 13px 30px rgba(0, 130, 255, .36), 0 0 20px rgba(0,240,255,.16);
      transform: translateY(-2px);
    }
    .signup-btn:active, .primary-btn:active { transform: translateY(1px) scale(.98); }
    .secondary-btn {
      color: #dffaff;
      border: 1px solid rgba(0,240,255,.40);
      background: rgba(0, 240, 255, .06);
    }
    .secondary-btn:hover {
      border-color: var(--cyan);
      background: rgba(0,240,255,.12);
      transform: translateY(-2px);
    }
    .menu-button {
      display: none;
      width: 39px;
      height: 39px;
      color: white;
      border: 1px solid var(--line);
      border-radius: 9px;
      background: rgba(0,82,255,.10);
    }

    .promo-strip {
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid rgba(0,240,255,.18);
      background: linear-gradient(90deg, rgba(0,82,255,.33), rgba(0,240,255,.11), rgba(0,82,255,.24));
    }
    .promo-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
      min-height: 52px;
    }
    .promo-copy {
      display: flex;
      align-items: center;
      gap: 11px;
      min-width: 0;
      color: #dffaff;
      font-size: .85rem;
      font-weight: 700;
    }
    .hot-dot {
      width: 9px;
      height: 9px;
      flex: 0 0 9px;
      border-radius: 50%;
      background: var(--danger);
      box-shadow: 0 0 0 5px rgba(255,84,112,.13), 0 0 14px var(--danger);
      animation: blink 1.5s infinite;
    }
    .countdown { display: flex; align-items: center; gap: 6px; white-space: nowrap; }
    .countdown strong {
      display: inline-grid;
      min-width: 30px;
      place-items: center;
      color: #06111a;
      border-radius: 6px;
      background: var(--cyan);
      font-size: .78rem;
      line-height: 26px;
    }

    .category-hero {
      position: relative;
      isolation: isolate;
      overflow: hidden;
      padding: 76px 0 82px;
      background: linear-gradient(90deg, rgba(5,7,13,.96), rgba(5,7,13,.74)), url('/assets/images/backpic/back-2.jpg') center/cover;
    }
    .category-hero::after {
      position: absolute;
      top: -100px;
      right: 5%;
      z-index: -1;
      width: 420px;
      height: 420px;
      content: "";
      border: 1px solid rgba(0,240,255,.21);
      border-radius: 50%;
      box-shadow: 0 0 0 42px rgba(0,82,255,.06), 0 0 0 84px rgba(0,240,255,.025), 0 0 80px rgba(0,240,255,.15);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(340px, .92fr);
      gap: 55px;
      align-items: center;
    }
    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 17px;
      color: var(--dim);
      font-size: .82rem;
    }
    .breadcrumb a:hover { color: var(--cyan); }
    .category-hero h1 {
      max-width: 770px;
      margin: 13px 0 20px;
      font-size: clamp(2.45rem, 5vw, 4.45rem);
      font-weight: 900;
      line-height: 1.03;
      letter-spacing: -.058em;
    }
    .electric { color: var(--cyan); text-shadow: 0 0 22px rgba(0,240,255,.25); }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
    .hero-note {
      display: flex;
      align-items: flex-start;
      gap: 9px;
      margin-top: 20px;
      color: #a8bfd5;
      font-size: .82rem;
    }
    .hero-note svg { flex: 0 0 18px; margin-top: 3px; color: var(--mint); }
    .guide-offer {
      position: relative;
      overflow: hidden;
      padding: 10px;
      border: 1px solid rgba(0,240,255,.42);
      border-radius: var(--radius-lg);
      background: linear-gradient(145deg, rgba(16,26,46,.90), rgba(5,12,25,.74));
      box-shadow: var(--shadow), var(--glow);
    }
    .guide-offer::before {
      position: absolute;
      top: -40px;
      right: -20px;
      width: 160px;
      height: 160px;
      content: "";
      border-radius: 50%;
      background: rgba(0,240,255,.10);
      filter: blur(20px);
    }
    .offer-image {
      position: relative;
      height: 164px;
      overflow: hidden;
      border-radius: 18px;
    }
    .offer-image::after {
      position: absolute;
      inset: 0;
      content: "";
      background: linear-gradient(180deg, transparent 36%, rgba(4,8,17,.90));
    }
    .offer-image img { width: 100%; height: 100%; object-fit: cover; }
    .offer-label {
      position: absolute;
      top: 13px;
      left: 13px;
      z-index: 1;
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 5px 9px;
      color: #fff;
      border: 1px solid rgba(255,255,255,.28);
      border-radius: 999px;
      background: rgba(5,9,18,.72);
      backdrop-filter: blur(8px);
      font-size: .7rem;
      font-weight: 850;
    }
    .offer-body { position: relative; padding: 20px 15px 13px; }
    .offer-body h2 { margin-bottom: 8px; font-size: 1.3rem; letter-spacing: -.025em; }
    .offer-body p { margin-bottom: 17px; color: var(--muted); font-size: .9rem; }
    .offer-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding-top: 14px;
      border-top: 1px solid var(--line);
    }
    .offer-meta span { color: var(--dim); font-size: .76rem; }
    .offer-meta strong { color: var(--mint); font-size: .85rem; }

    .quick-bar {
      position: relative;
      z-index: 2;
      width: min(1110px, calc(100% - 40px));
      margin: -28px auto 0;
      border: 1px solid var(--line);
      border-radius: 16px;
      background: rgba(12,18,33,.89);
      box-shadow: var(--shadow);
      backdrop-filter: blur(16px);
    }
    .quick-list { display: grid; grid-template-columns: repeat(4, 1fr); }
    .quick-item {
      display: flex;
      align-items: center;
      gap: 11px;
      padding: 17px 20px;
      color: var(--muted);
      border-right: 1px solid var(--line);
      font-size: .84rem;
      font-weight: 700;
    }
    .quick-item:last-child { border-right: 0; }
    .quick-icon {
      display: grid;
      width: 30px;
      height: 30px;
      flex: 0 0 30px;
      place-items: center;
      color: var(--cyan);
      border: 1px solid rgba(0,240,255,.27);
      border-radius: 9px;
      background: rgba(0,240,255,.07);
    }

    .split-intro {
      display: grid;
      grid-template-columns: .83fr 1.17fr;
      gap: 70px;
      align-items: start;
    }
    .side-title {
      position: sticky;
      top: 106px;
      padding-right: 20px;
    }
    .side-title h2 { margin: 13px 0 18px; }
    .side-title p { color: var(--muted); }
    .principle-list { border-top: 1px solid var(--line); }
    .principle {
      display: grid;
      grid-template-columns: 53px 1fr;
      gap: 18px;
      padding: 25px 0;
      border-bottom: 1px solid var(--line);
    }
    .principle-num {
      display: grid;
      width: 43px;
      height: 43px;
      place-items: center;
      color: var(--cyan);
      border: 1px solid rgba(0,240,255,.4);
      border-radius: 12px;
      background: rgba(0,240,255,.06);
      font-size: .83rem;
      font-weight: 900;
    }
    .principle h3 { margin: 0 0 7px; font-size: 1.12rem; }
    .principle p { margin: 0; color: var(--muted); font-size: .94rem; }

    .process-section {
      overflow: hidden;
      background: linear-gradient(180deg, transparent, rgba(0,82,255,.055), transparent);
    }
    .process-layout {
      display: grid;
      grid-template-columns: 1.02fr .98fr;
      gap: 52px;
      align-items: center;
    }
    .visual-frame {
      position: relative;
      min-height: 480px;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: #0b1220;
      box-shadow: var(--shadow);
    }
    .visual-frame img { width: 100%; height: 100%; min-height: 480px; object-fit: cover; opacity: .68; }
    .visual-frame::after {
      position: absolute;
      inset: 0;
      content: "";
      background: linear-gradient(135deg, rgba(0,82,255,.34), transparent 48%, rgba(0,240,255,.12));
    }
    .image-caption {
      position: absolute;
      right: 22px;
      bottom: 22px;
      left: 22px;
      z-index: 1;
      padding: 16px 17px;
      border: 1px solid rgba(255,255,255,.18);
      border-radius: 14px;
      background: rgba(4,8,17,.70);
      backdrop-filter: blur(12px);
    }
    .image-caption strong { display: block; margin-bottom: 3px; color: white; font-size: .94rem; }
    .image-caption span { color: #b7ccdc; font-size: .79rem; }
    .steps { counter-reset: item; }
    .step {
      position: relative;
      padding: 0 0 24px 69px;
    }
    .step:not(:last-child)::before {
      position: absolute;
      top: 48px;
      bottom: 0;
      left: 21px;
      width: 1px;
      content: "";
      background: linear-gradient(var(--cyan), transparent);
    }
    .step::after {
      position: absolute;
      top: 0;
      left: 0;
      display: grid;
      width: 43px;
      height: 43px;
      content: counter(item, decimal-leading-zero);
      counter-increment: item;
      place-items: center;
      color: var(--cyan);
      border: 1px solid rgba(0,240,255,.4);
      border-radius: 50%;
      background: #0c1830;
      font-size: .75rem;
      font-weight: 900;
      box-shadow: 0 0 16px rgba(0,240,255,.13);
    }
    .step h3 { margin: 0 0 7px; font-size: 1.1rem; }
    .step p { margin: 0; color: var(--muted); font-size: .93rem; }

    .proof-grid {
      display: grid;
      grid-template-columns: .83fr 1.17fr;
      gap: 24px;
      align-items: stretch;
    }
    .score-card {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      min-height: 310px;
      padding: 31px;
      overflow: hidden;
      border: 1px solid var(--line-bright);
      border-radius: var(--radius-lg);
      background: linear-gradient(145deg, rgba(0,82,255,.20), rgba(13,17,30,.84) 54%);
      box-shadow: var(--glow);
    }
    .score-card h3 { max-width: 300px; margin-bottom: 13px; font-size: 1.45rem; }
    .score-card p { color: var(--muted); }
    .score-number {
      margin-top: 15px;
      color: var(--cyan);
      font-size: clamp(3.2rem, 6vw, 5rem);
      font-weight: 900;
      line-height: 1;
      letter-spacing: -.07em;
      text-shadow: 0 0 23px rgba(0,240,255,.22);
    }
    .score-number small { font-size: 1.05rem; letter-spacing: 0; }
    .trust-points {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1px;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: var(--line);
    }
    .trust-point {
      min-height: 154px;
      padding: 24px;
      background: rgba(11,16,29,.90);
      transition: background .2s ease;
    }
    .trust-point:hover { background: rgba(0,82,255,.13); }
    .trust-point svg { margin-bottom: 18px; color: var(--cyan); }
    .trust-point h3 { margin-bottom: 7px; font-size: 1rem; }
    .trust-point p { margin: 0; color: var(--muted); font-size: .84rem; }

    .check-section { padding-top: 35px; }
    .check-wrap {
      display: grid;
      grid-template-columns: 1fr .8fr;
      gap: 45px;
      padding: 38px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: linear-gradient(120deg, rgba(9,23,44,.84), rgba(8,11,20,.74));
    }
    .check-list { display: grid; gap: 13px; margin-top: 23px; }
    .check-item {
      display: flex;
      align-items: flex-start;
      gap: 11px;
      color: #d9e9f6;
      font-size: .92rem;
    }
    .check-item svg { flex: 0 0 19px; margin-top: 3px; color: var(--mint); }
    .warning-box {
      align-self: center;
      padding: 25px;
      border: 1px solid rgba(255,84,112,.34);
      border-radius: 17px;
      background: rgba(255,84,112,.055);
    }
    .warning-box svg { margin-bottom: 12px; color: #ff7890; }
    .warning-box h3 { margin-bottom: 8px; font-size: 1.08rem; }
    .warning-box p { margin: 0; color: #c5b6c0; font-size: .88rem; }

    .faq-layout {
      display: grid;
      grid-template-columns: .73fr 1.27fr;
      gap: 70px;
      align-items: start;
    }
    .faq-intro p { color: var(--muted); }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-list details { border-bottom: 1px solid var(--line); }
    .faq-list summary {
      position: relative;
      padding: 20px 42px 20px 0;
      color: #edf7ff;
      cursor: pointer;
      list-style: none;
      font-size: 1rem;
      font-weight: 800;
    }
    .faq-list summary::-webkit-details-marker { display: none; }
    .faq-list summary::after {
      position: absolute;
      top: 22px;
      right: 3px;
      width: 12px;
      height: 12px;
      content: "";
      border-right: 2px solid var(--cyan);
      border-bottom: 2px solid var(--cyan);
      transform: rotate(45deg);
      transition: transform .2s ease;
    }
    .faq-list details[open] summary::after { top: 28px; transform: rotate(225deg); }
    .faq-list details p { max-width: 720px; padding: 0 15px 21px 0; margin: 0; color: var(--muted); font-size: .92rem; }

    .cta-section { padding: 35px 0 118px; }
    .cta-box {
      position: relative;
      overflow: hidden;
      padding: 50px;
      text-align: center;
      border: 1px solid rgba(0,240,255,.38);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(90deg, rgba(4,12,28,.93), rgba(0,55,102,.66), rgba(4,12,28,.93)),
        url('/assets/images/backpic/back-3.jpg') center/cover;
      box-shadow: var(--shadow), var(--glow);
    }
    .cta-box::before, .cta-box::after {
      position: absolute;
      width: 190px;
      height: 190px;
      content: "";
      border: 1px solid rgba(0,240,255,.22);
      border-radius: 50%;
    }
    .cta-box::before { top: -105px; left: 5%; }
    .cta-box::after { right: 5%; bottom: -105px; }
    .cta-content { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }
    .cta-content h2 { margin: 12px 0 14px; }
    .cta-content p { margin-bottom: 25px; color: #c1d3e5; }
    .guide-form {
      display: flex;
      max-width: 560px;
      gap: 10px;
      margin: 0 auto;
    }
    .guide-form input {
      min-width: 0;
      flex: 1;
      height: 47px;
      padding: 0 14px;
      color: white;
      border: 1px solid rgba(166,210,255,.30);
      border-radius: 10px;
      outline: none;
      background: rgba(3,8,17,.65);
    }
    .guide-form input::placeholder { color: #8596ab; }
    .guide-form input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(0,240,255,.11); }
    .form-note { margin: 13px 0 0; color: #98afc5; font-size: .77rem; }

    .site-footer {
      padding: 58px 0 91px;
      border-top: 1px solid var(--line);
      background: rgba(3,5,10,.66);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.35fr .65fr .9fr;
      gap: 55px;
      padding-bottom: 37px;
    }
    .footer-brand { display: flex; align-items: flex-start; gap: 13px; }
    .footer-brand strong { display: block; max-width: 420px; font-size: .95rem; line-height: 1.35; }
    .footer-brand p { max-width: 500px; margin: 9px 0 0; color: var(--dim); font-size: .84rem; }
    .footer-col h3 { margin-bottom: 13px; color: #ddecfa; font-size: .9rem; }
    .footer-col a {
      display: block;
      width: max-content;
      max-width: 100%;
      margin: 8px 0;
      color: var(--dim);
      font-size: .85rem;
      transition: color .2s ease, transform .2s ease;
    }
    .footer-col a:hover { color: var(--cyan); transform: translateX(3px); }
    .age-row { display: flex; align-items: flex-start; gap: 11px; }
    .age-badge {
      display: grid;
      width: 37px;
      height: 37px;
      flex: 0 0 37px;
      place-items: center;
      color: #ffd5dc;
      border: 1px solid rgba(255,84,112,.58);
      border-radius: 9px;
      background: rgba(255,84,112,.10);
      font-size: .8rem;
      font-weight: 900;
    }
    .age-row p { margin: 0; color: var(--dim); font-size: .8rem; line-height: 1.55; }
    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding-top: 22px;
      color: #687b92;
      border-top: 1px solid var(--line);
      font-size: .77rem;
    }
    .copyright a { color: #8ca8c5; }
    .copyright a:hover { color: var(--cyan); }

    .floating-fab {
      position: fixed;
      bottom: 6rem;
      left: 1rem;
      z-index: 50;
      display: grid;
      width: 56px;
      height: 56px;
      place-items: center;
      color: var(--cyan);
      border: 1px solid transparent;
      border-radius: 15px;
      background:
        linear-gradient(#080d19, #080d19) padding-box,
        linear-gradient(135deg, var(--cyan), var(--blue), var(--cyan)) border-box;
      box-shadow: 0 0 15px rgba(0,240,255,.42);
      opacity: .72;
      transition: transform .22s ease, opacity .22s ease, box-shadow .22s ease;
      animation: fabbreath 2.6s ease-in-out infinite;
    }
    .floating-fab::after {
      position: absolute;
      top: 5px;
      right: 5px;
      width: 7px;
      height: 7px;
      content: "";
      border-radius: 50%;
      background: #ff5470;
      box-shadow: 0 0 9px #ff5470;
      animation: blink 1s infinite;
    }
    .floating-fab:hover { opacity: 1; box-shadow: 0 0 28px rgba(0,240,255,.75); transform: scale(1.1); }
    .floating-fab:hover svg { animation: flicker .5s linear; }
    .floating-fab:active { transform: scale(.95); }
    .fixed-convert {
      position: fixed;
      right: 0;
      bottom: 0;
      left: 0;
      z-index: 40;
      border-top: 1px solid rgba(0,240,255,.22);
      background: rgba(5,8,15,.88);
      backdrop-filter: blur(18px);
    }
    .convert-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      min-height: 69px;
    }
    .convert-inner p { margin: 0; color: #c8d8e7; font-size: .86rem; }
    .convert-inner strong { color: var(--cyan); }

    @keyframes blink { 50% { opacity: .38; } }
    @keyframes fabbreath {
      50% { opacity: 1; transform: translateY(-5px); box-shadow: 0 0 24px rgba(0,240,255,.58); }
    }
    @keyframes flicker {
      20%, 60% { opacity: .2; }
      35%, 75% { opacity: 1; }
    }

    @media (max-width: 1024px) {
      .desktop-nav a { padding-inline: 8px; }
      .hero-grid, .process-layout { gap: 35px; }
      .split-intro, .faq-layout { gap: 42px; }
      .footer-grid { gap: 30px; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 32px, 1180px); }
      .section { padding: 66px 0; }
      .desktop-nav { display: none; }
      .nav-wrap { gap: 10px; height: 68px; }
      .brand { max-width: 215px; font-size: .72rem; }
      .brand-mark { width: 34px; height: 34px; flex-basis: 34px; }
      .login-btn { display: none; }
      .signup-btn { min-height: 38px; padding: 9px 11px; font-size: .76rem; }
      .menu-button { display: grid; place-items: center; }
      .promo-inner { min-height: 58px; }
      .promo-copy { font-size: .75rem; line-height: 1.35; }
      .category-hero { padding: 58px 0 62px; }
      .hero-grid, .process-layout, .proof-grid, .check-wrap, .faq-layout, .split-intro { grid-template-columns: 1fr; }
      .hero-grid { gap: 32px; }
      .category-hero h1 { font-size: clamp(2.2rem, 9vw, 3.5rem); }
      .guide-offer { max-width: 530px; }
      .quick-list { grid-template-columns: repeat(2, 1fr); }
      .quick-item:nth-child(2) { border-right: 0; }
      .quick-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
      .side-title { position: static; padding-right: 0; }
      .visual-frame, .visual-frame img { min-height: 340px; }
      .check-wrap { gap: 30px; padding: 28px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .footer-grid > :first-child { grid-column: 1 / -1; }
      .copyright { flex-direction: column; gap: 5px; }
    }
    @media (max-width: 520px) {
      body { font-size: 15px; }
      .container { width: min(100% - 28px, 1180px); }
      .brand { max-width: 175px; font-size: .65rem; }
      .brand-mark { width: 31px; height: 31px; flex-basis: 31px; border-radius: 9px; }
      .brand-mark span { font-size: .67rem; }
      .nav-actions { gap: 5px; }
      .signup-btn { padding: 8px 8px; font-size: .7rem; }
      .menu-button { width: 35px; height: 35px; }
      .promo-inner { gap: 10px; }
      .promo-copy span:last-child { display: none; }
      .countdown { gap: 3px; }
      .countdown strong { min-width: 25px; font-size: .68rem; }
      .hero-actions .primary-btn, .hero-actions .secondary-btn { width: 100%; }
      .quick-bar { width: min(100% - 28px, 1110px); }
      .quick-item { padding: 13px 10px; gap: 8px; font-size: .72rem; }
      .quick-icon { width: 27px; height: 27px; flex-basis: 27px; }
      .section-head { display: block; margin-bottom: 27px; }
      .section-head .lead { margin-top: 12px; }
      .principle { grid-template-columns: 45px 1fr; gap: 13px; }
      .principle-num { width: 37px; height: 37px; }
      .trust-points { grid-template-columns: 1fr; }
      .score-card { min-height: 260px; padding: 25px; }
      .check-wrap { padding: 23px; }
      .cta-box { padding: 36px 20px; }
      .guide-form { flex-direction: column; }
      .guide-form .primary-btn { width: 100%; }
      .footer-grid { grid-template-columns: 1fr; gap: 25px; }
      .footer-grid > :first-child { grid-column: auto; }
      .convert-inner { min-height: 65px; gap: 10px; }
      .convert-inner p { font-size: .73rem; line-height: 1.35; }
      .convert-inner .primary-btn { min-height: 38px; padding: 8px 11px; white-space: nowrap; font-size: .72rem; }
      .floating-fab { bottom: 5.4rem; }
    }