/* roulang page: index */
:root {
            --ink: #16233d;
            --ink-soft: #52627b;
            --blue: #2563eb;
            --blue-dark: #1745a3;
            --cyan: #13b8c8;
            --sky: #eef6ff;
            --paper: #ffffff;
            --mist: #f6f9fc;
            --line: #dce6f0;
            --gold: #f1b84b;
            --radius-lg: 24px;
            --radius-md: 16px;
            --shadow-sm: 0 8px 24px rgba(27, 58, 99, .08);
            --shadow-lg: 0 22px 55px rgba(35, 81, 136, .16);
        }
        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--ink);
            background: var(--paper);
            font-family: "Noto Sans SC", "Inter", sans-serif;
            line-height: 1.75;
        }
        a { color: inherit; text-decoration: none; }
        img { max-width: 100%; display: block; }
        button, input { font: inherit; }
        .container { max-width: 1180px; }
        .topline {
            background: #13213a;
            color: rgba(255,255,255,.78);
            font-size: .82rem;
            letter-spacing: .02em;
        }
        .topline-inner {
            min-height: 34px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .topline strong { color: #fff; }
        .brand-header {
            background: rgba(255,255,255,.96);
            border-bottom: 1px solid var(--line);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(16px);
        }
        .brand-row {
            min-height: 78px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 26px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 11px;
            font-weight: 800;
            font-size: 1.42rem;
            letter-spacing: -.04em;
            white-space: nowrap;
        }
        .brand-mark {
            width: 38px;
            height: 38px;
            display: grid;
            place-items: center;
            border-radius: 12px;
            color: #fff;
            background: linear-gradient(145deg, var(--blue), var(--cyan));
            box-shadow: 0 8px 18px rgba(37,99,235,.25);
            font-size: 1.1rem;
        }
        .brand small {
            display: block;
            color: var(--ink-soft);
            font-weight: 500;
            font-size: .65rem;
            letter-spacing: .08em;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 7px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            min-height: 40px;
            padding: 0 15px;
            border-radius: 10px;
            color: var(--ink-soft);
            font-size: .92rem;
            font-weight: 600;
            transition: .25s ease;
        }
        .nav-links a:hover, .nav-links a.active {
            color: var(--blue);
            background: var(--sky);
        }
        .nav-action {
            padding: 10px 18px !important;
            background: var(--blue) !important;
            color: #fff !important;
            box-shadow: 0 8px 16px rgba(37,99,235,.2);
        }
        .nav-action:hover { background: var(--blue-dark) !important; }
        .hero {
            position: relative;
            overflow: hidden;
            min-height: 570px;
            display: flex;
            align-items: center;
            background:
                linear-gradient(105deg, rgba(11,29,57,.94) 0%, rgba(16,50,101,.86) 56%, rgba(16,91,125,.55) 100%),
                url("https://images.unsplash.com/photo-1550745165-9bc0b252726f?auto=format&fit=crop&w=1800&q=85") center/cover;
        }
        .hero:after {
            content: "";
            position: absolute;
            inset: auto -10% -145px auto;
            width: 570px;
            height: 300px;
            border-radius: 50%;
            border: 1px solid rgba(255,255,255,.16);
            box-shadow: 0 0 0 28px rgba(255,255,255,.04), 0 0 0 58px rgba(255,255,255,.025);
            transform: rotate(-12deg);
        }
        .hero-content { position: relative; z-index: 1; color: #fff; }
        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #a9f0f1;
            font-size: .83rem;
            font-weight: 700;
            letter-spacing: .12em;
            text-transform: uppercase;
        }
        .eyebrow:before {
            content: "";
            width: 26px;
            height: 2px;
            background: var(--cyan);
        }
        .hero h1 {
            max-width: 780px;
            margin: 18px 0 22px;
            font-size: clamp(2.6rem, 5vw, 4.65rem);
            line-height: 1.12;
            letter-spacing: -.055em;
            font-weight: 800;
        }
        .hero p {
            max-width: 710px;
            margin-bottom: 30px;
            color: rgba(255,255,255,.78);
            font-size: 1.08rem;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
        .btn-primary-custom, .btn-light-custom {
            min-height: 48px;
            padding: 11px 22px;
            border-radius: 10px;
            font-weight: 700;
            border: 1px solid transparent;
            transition: .25s ease;
        }
        .btn-primary-custom {
            color: #fff;
            background: var(--cyan);
            box-shadow: 0 10px 22px rgba(19,184,200,.25);
        }
        .btn-primary-custom:hover { color: #fff; background: #0c9da9; transform: translateY(-2px); }
        .btn-light-custom {
            color: #fff;
            border-color: rgba(255,255,255,.4);
            background: rgba(255,255,255,.08);
        }
        .btn-light-custom:hover { color: var(--ink); background: #fff; }
        .status-strip {
            position: absolute;
            right: 8%;
            bottom: 34px;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 11px 17px;
            color: #d8ffff;
            background: rgba(9,34,68,.78);
            border: 1px solid rgba(161,240,242,.25);
            border-radius: 12px;
            font-size: .85rem;
        }
        .status-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: #5ce0a0;
            box-shadow: 0 0 0 5px rgba(92,224,160,.14);
        }
        .section { padding: 92px 0; }
        .section-soft { background: var(--mist); }
        .section-blue { background: var(--sky); }
        .section-heading { margin-bottom: 42px; }
        .section-heading h2 {
            margin: 12px 0 12px;
            font-size: clamp(1.8rem, 3vw, 2.65rem);
            line-height: 1.25;
            letter-spacing: -.045em;
            font-weight: 800;
        }
        .section-heading p {
            max-width: 710px;
            margin: 0;
            color: var(--ink-soft);
        }
        .mini-label {
            color: var(--blue);
            font-size: .78rem;
            font-weight: 800;
            letter-spacing: .12em;
        }
        .feature-card, .topic-card, .article-card, .trust-card, .faq-item {
            height: 100%;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: .25s ease;
        }
        .feature-card:hover, .topic-card:hover, .article-card:hover, .trust-card:hover {
            transform: translateY(-5px);
            border-color: #b8d1f2;
            box-shadow: var(--shadow-lg);
        }
        .feature-card { padding: 26px; }
        .icon-box {
            width: 48px;
            height: 48px;
            display: grid;
            place-items: center;
            margin-bottom: 20px;
            border-radius: 13px;
            color: var(--blue);
            background: var(--sky);
            font-size: 1.25rem;
            font-weight: 800;
        }
        .feature-card h3, .topic-card h3, .article-card h3, .trust-card h3 {
            margin: 0 0 10px;
            font-size: 1.08rem;
            font-weight: 800;
        }
        .feature-card p, .topic-card p, .article-card p, .trust-card p {
            margin: 0;
            color: var(--ink-soft);
            font-size: .92rem;
        }
        .number-row {
            display: flex;
            gap: 1px;
            overflow: hidden;
            border-radius: var(--radius-lg);
            background: var(--line);
            box-shadow: var(--shadow-sm);
        }
        .number-item {
            flex: 1;
            min-width: 0;
            padding: 27px 20px;
            background: #fff;
            text-align: center;
        }
        .number-item strong {
            display: block;
            color: var(--blue);
            font-size: 2.15rem;
            line-height: 1.1;
            letter-spacing: -.05em;
        }
        .number-item span { color: var(--ink-soft); font-size: .88rem; }
        .topic-card { overflow: hidden; }
        .topic-visual {
            min-height: 145px;
            padding: 20px;
            display: flex;
            align-items: flex-end;
            background: linear-gradient(135deg, #133f82, #16a6b1);
            color: #fff;
        }
        .topic-card:nth-child(2) .topic-visual { background: linear-gradient(135deg, #1e3a8a, #6b7df6); }
        .topic-card:nth-child(3) .topic-visual { background: linear-gradient(135deg, #065f73, #32c69b); }
        .topic-card:nth-child(4) .topic-visual { background: linear-gradient(135deg, #35415d, #d07b42); }
        .topic-visual strong { font-size: 1.35rem; }
        .topic-body { padding: 21px; }
        .topic-meta {
            display: flex;
            justify-content: space-between;
            gap: 10px;
            margin-top: 18px;
            padding-top: 14px;
            border-top: 1px solid var(--line);
            color: var(--blue);
            font-size: .78rem;
            font-weight: 700;
        }
        .timeline { position: relative; padding-left: 27px; }
        .timeline:before {
            content: "";
            position: absolute;
            left: 5px;
            top: 9px;
            bottom: 9px;
            width: 2px;
            background: #bfdbfe;
        }
        .timeline-item { position: relative; padding: 0 0 30px 25px; }
        .timeline-item:last-child { padding-bottom: 0; }
        .timeline-item:before {
            content: "";
            position: absolute;
            left: -28px;
            top: 8px;
            width: 12px;
            height: 12px;
            border: 3px solid #fff;
            border-radius: 50%;
            background: var(--blue);
            box-shadow: 0 0 0 2px var(--blue);
        }
        .timeline-item time {
            color: var(--blue);
            font-size: .78rem;
            font-weight: 800;
        }
        .timeline-item h3 { margin: 5px 0 6px; font-size: 1.06rem; font-weight: 800; }
        .timeline-item p { margin: 0; color: var(--ink-soft); font-size: .9rem; }
        .outline-panel {
            padding: 30px;
            border-radius: var(--radius-lg);
            color: #fff;
            background: #132b51;
            box-shadow: var(--shadow-lg);
        }
        .outline-panel h3 { margin: 0 0 12px; font-size: 1.4rem; }
        .outline-panel p { color: rgba(255,255,255,.7); font-size: .92rem; }
        .outline-list { list-style: none; padding: 0; margin: 24px 0 0; }
        .outline-list li {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            color: rgba(255,255,255,.86);
            border-bottom: 1px solid rgba(255,255,255,.12);
            font-size: .92rem;
        }
        .outline-list li:last-child { border-bottom: 0; }
        .outline-list b { color: #8de8eb; }
        .article-card { padding: 24px; }
        .article-tag {
            display: inline-block;
            margin-bottom: 17px;
            padding: 5px 9px;
            border-radius: 6px;
            color: var(--blue);
            background: var(--sky);
            font-size: .72rem;
            font-weight: 800;
        }
        .article-card a { display: inline-flex; margin-top: 17px; color: var(--blue); font-size: .85rem; font-weight: 800; }
        .trust-card { padding: 25px; }
        .trust-num { color: var(--blue); font-size: 1.8rem; font-weight: 800; }
        .faq-wrap { max-width: 880px; margin: 0 auto; }
        .faq-item { overflow: hidden; margin-bottom: 12px; }
        .faq-item button {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            gap: 18px;
            border: 0;
            background: #fff;
            color: var(--ink);
            text-align: left;
            font-weight: 700;
        }
        .faq-item button:hover { color: var(--blue); background: #fbfdff; }
        .faq-item .answer { padding: 0 24px 22px; color: var(--ink-soft); font-size: .9rem; }
        .cta-section { padding: 74px 0; background: #eaf7fa; }
        .cta-box {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            padding: 42px 48px;
            border-radius: var(--radius-lg);
            background: linear-gradient(110deg, #12335f, #176b7c);
            color: #fff;
            box-shadow: var(--shadow-lg);
        }
        .cta-box h2 { margin: 0 0 10px; font-size: clamp(1.7rem, 3vw, 2.5rem); letter-spacing: -.04em; }
        .cta-box p { max-width: 610px; margin: 0; color: rgba(255,255,255,.74); }
        footer { padding: 56px 0 24px; color: rgba(255,255,255,.68); background: #101d34; }
        footer .brand { color: #fff; }
        footer h3 { margin: 0 0 16px; color: #fff; font-size: .94rem; }
        footer ul { margin: 0; padding: 0; list-style: none; }
        footer li { margin-bottom: 8px; font-size: .86rem; }
        footer a:hover { color: #8de8eb; }
        .footer-bottom {
            margin-top: 42px;
            padding-top: 19px;
            border-top: 1px solid rgba(255,255,255,.12);
            display: flex;
            justify-content: space-between;
            gap: 18px;
            flex-wrap: wrap;
            font-size: .78rem;
        }
        :focus-visible { outline: 3px solid rgba(19,184,200,.45); outline-offset: 3px; }
        @media (max-width: 991px) {
            .brand-row { min-height: 70px; }
            .nav-links { gap: 0; }
            .nav-links a { padding: 0 10px; font-size: .85rem; }
            .hero { min-height: 530px; }
            .status-strip { right: 5%; }
        }
        @media (max-width: 767px) {
            .topline-inner { justify-content: center; text-align: center; }
            .topline-inner span:last-child { display: none; }
            .brand-row { flex-wrap: wrap; padding: 13px 0; }
            .nav-links { order: 3; width: 100%; overflow-x: auto; justify-content: flex-start; padding-bottom: 2px; }
            .nav-links a { white-space: nowrap; }
            .nav-action { display: none !important; }
            .hero { min-height: 610px; }
            .hero h1 { font-size: 2.65rem; }
            .hero p { font-size: .97rem; }
            .status-strip { left: 20px; right: auto; bottom: 24px; }
            .section { padding: 64px 0; }
            .number-row { display: grid; grid-template-columns: repeat(2, 1fr); }
            .number-item { padding: 22px 12px; }
            .number-item strong { font-size: 1.8rem; }
            .cta-box { padding: 32px 25px; display: block; }
            .cta-box .btn-light-custom { margin-top: 24px; }
        }
        @media (max-width: 520px) {
            .container { padding-left: 20px; padding-right: 20px; }
            .brand { font-size: 1.18rem; }
            .brand-mark { width: 34px; height: 34px; }
            .hero h1 { font-size: 2.25rem; }
            .hero-actions a { width: 100%; text-align: center; }
            .section-heading { margin-bottom: 30px; }
            .number-row { grid-template-columns: 1fr 1fr; }
            .footer-bottom { display: block; }
            .footer-bottom span { display: block; margin-bottom: 8px; }
        }

/* roulang page: category1 */
:root {
      --ink: #16233d;
      --ink-soft: #52627b;
      --blue: #2563eb;
      --blue-dark: #1745a3;
      --cyan: #13b8c8;
      --sky: #eef6ff;
      --paper: #fff;
      --mist: #f6f9fc;
      --line: #dce6f0;
      --gold: #f1b84b;
      --green: #2eaf78;
      --radius-lg: 24px;
      --radius-md: 16px;
      --shadow-sm: 0 8px 24px rgba(27, 58, 99, .08);
      --shadow-lg: 0 22px 55px rgba(35, 81, 136, .16);
    }
    html { scroll-behavior: smooth; }
    * { box-sizing: border-box; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: "Noto Sans SC", "Inter", sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input { font: inherit; }
    .container { max-width: 1180px; }
    .brand-header {
      background: rgba(255,255,255,.96);
      border-bottom: 1px solid var(--line);
      position: sticky;
      top: 0;
      z-index: 1000;
      backdrop-filter: blur(16px);
    }
    .brand-row {
      min-height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 26px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      font-weight: 800;
      font-size: 1.42rem;
      letter-spacing: -.04em;
      white-space: nowrap;
    }
    .brand-mark {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border-radius: 12px;
      color: #fff;
      background: linear-gradient(145deg, var(--blue), var(--cyan));
      box-shadow: 0 8px 18px rgba(37,99,235,.25);
      font-size: 1.1rem;
    }
    .brand small {
      display: block;
      color: var(--ink-soft);
      font-weight: 500;
      font-size: .65rem;
      letter-spacing: .08em;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 7px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .nav-links a {
      display: inline-flex;
      align-items: center;
      min-height: 40px;
      padding: 0 15px;
      border-radius: 10px;
      color: var(--ink-soft);
      font-size: .92rem;
      font-weight: 600;
      transition: .25s ease;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--blue);
      background: var(--sky);
    }
    .nav-action {
      padding: 10px 18px !important;
      background: var(--blue) !important;
      color: #fff !important;
      box-shadow: 0 8px 16px rgba(37,99,235,.2);
    }
    .nav-action:hover { background: var(--blue-dark) !important; }
    .hero-category {
      position: relative;
      overflow: hidden;
      padding: 92px 0 86px;
      background:
        linear-gradient(112deg, rgba(12,35,75,.96), rgba(16,67,116,.88)),
        url("https://images.unsplash.com/photo-1550745165-9bc0b252726f?auto=format&fit=crop&w=1800&q=85") center/cover;
      color: #fff;
    }
    .hero-category:before {
      content: "";
      position: absolute;
      width: 580px;
      height: 580px;
      right: -220px;
      top: -310px;
      border: 1px solid rgba(255,255,255,.16);
      border-radius: 50%;
      box-shadow: 0 0 0 30px rgba(255,255,255,.035), 0 0 0 68px rgba(255,255,255,.025);
    }
    .hero-category:after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 1px;
      background: rgba(255,255,255,.18);
    }
    .hero-category .container { position: relative; z-index: 1; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #a9f0f1;
      font-size: .83rem;
      font-weight: 700;
      letter-spacing: .12em;
    }
    .eyebrow:before {
      content: "";
      width: 26px;
      height: 2px;
      background: var(--cyan);
    }
    .hero-category h1 {
      max-width: 760px;
      margin: 18px 0 20px;
      font-size: clamp(2.5rem, 5vw, 4.4rem);
      line-height: 1.14;
      letter-spacing: -.055em;
      font-weight: 800;
    }
    .hero-category p {
      max-width: 680px;
      margin: 0;
      color: rgba(255,255,255,.78);
      font-size: 1.08rem;
    }
    .hero-panel {
      margin-top: 34px;
      max-width: 900px;
      padding: 18px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 13px;
      border: 1px solid rgba(255,255,255,.18);
      border-radius: var(--radius-md);
      background: rgba(5,24,58,.43);
      box-shadow: 0 18px 42px rgba(0,0,0,.18);
    }
    .hero-search {
      min-height: 52px;
      padding: 0 18px;
      color: #fff;
      border: 1px solid rgba(255,255,255,.22);
      border-radius: 10px;
      background: rgba(255,255,255,.1);
      outline: none;
    }
    .hero-search::placeholder { color: rgba(255,255,255,.62); }
    .hero-search:focus {
      border-color: var(--cyan);
      box-shadow: 0 0 0 4px rgba(19,184,200,.16);
    }
    .hero-panel .btn-primary-custom { min-height: 52px; }
    .btn-primary-custom, .btn-light-custom, .btn-outline-custom {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 10px 21px;
      border-radius: 10px;
      font-weight: 700;
      border: 1px solid transparent;
      transition: .25s ease;
    }
    .btn-primary-custom {
      color: #fff;
      background: var(--cyan);
      box-shadow: 0 10px 22px rgba(19,184,200,.25);
    }
    .btn-primary-custom:hover {
      color: #fff;
      background: #0c9da9;
      transform: translateY(-2px);
    }
    .btn-light-custom {
      color: #fff;
      border-color: rgba(255,255,255,.4);
      background: rgba(255,255,255,.08);
    }
    .btn-light-custom:hover { color: var(--ink); background: #fff; }
    .btn-outline-custom {
      color: var(--blue);
      border-color: #b9d0ef;
      background: #fff;
    }
    .btn-outline-custom:hover {
      color: #fff;
      border-color: var(--blue);
      background: var(--blue);
    }
    .section { padding: 88px 0; }
    .section-soft { background: var(--mist); }
    .section-blue { background: var(--sky); }
    .section-heading { margin-bottom: 40px; }
    .section-heading h2 {
      margin: 12px 0;
      font-size: clamp(1.8rem, 3vw, 2.65rem);
      line-height: 1.25;
      letter-spacing: -.045em;
      font-weight: 800;
    }
    .section-heading p {
      max-width: 720px;
      margin: 0;
      color: var(--ink-soft);
    }
    .section-kicker {
      color: var(--blue);
      font-size: .78rem;
      font-weight: 800;
      letter-spacing: .12em;
    }
    .topic-card, .info-card, .article-card, .faq-item, .data-panel {
      height: 100%;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      transition: .25s ease;
    }
    .topic-card:hover, .info-card:hover, .article-card:hover {
      transform: translateY(-5px);
      border-color: #b8d1f2;
      box-shadow: var(--shadow-lg);
    }
    .topic-card { padding: 27px; }
    .topic-icon {
      width: 45px;
      height: 45px;
      display: grid;
      place-items: center;
      margin-bottom: 21px;
      border-radius: 13px;
      color: var(--blue);
      background: var(--sky);
      font-size: 1.25rem;
      font-weight: 800;
    }
    .topic-card h3, .info-card h3, .article-card h3 {
      margin: 0 0 9px;
      font-size: 1.16rem;
      line-height: 1.4;
      font-weight: 800;
    }
    .topic-card p, .info-card p, .article-card p {
      margin: 0;
      color: var(--ink-soft);
      font-size: .92rem;
    }
    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 3px 10px;
      border-radius: 30px;
      color: var(--blue-dark);
      background: #e8f1ff;
      font-size: .76rem;
      font-weight: 700;
    }
    .split-feature {
      display: grid;
      grid-template-columns: .92fr 1.08fr;
      align-items: stretch;
      gap: 42px;
    }
    .split-image {
      min-height: 390px;
      overflow: hidden;
      border-radius: var(--radius-lg);
      background: #173a73;
      box-shadow: var(--shadow-lg);
    }
    .split-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: .92;
    }
    .feature-copy {
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .feature-copy h2 {
      margin: 13px 0 17px;
      font-size: clamp(1.8rem, 3vw, 2.7rem);
      line-height: 1.25;
      letter-spacing: -.045em;
      font-weight: 800;
    }
    .feature-copy > p { color: var(--ink-soft); }
    .check-list {
      display: grid;
      gap: 13px;
      margin: 23px 0 28px;
      padding: 0;
      list-style: none;
    }
    .check-list li {
      position: relative;
      padding-left: 31px;
      color: var(--ink);
      font-weight: 600;
    }
    .check-list li:before {
      content: "✓";
      position: absolute;
      left: 0;
      top: 1px;
      width: 21px;
      height: 21px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #fff;
      background: var(--green);
      font-size: .76rem;
      font-weight: 800;
    }
    .data-panel {
      padding: 27px;
      border-top: 3px solid var(--cyan);
    }
    .data-value {
      display: block;
      margin: 4px 0 3px;
      color: var(--blue-dark);
      font-size: 2.2rem;
      line-height: 1.1;
      font-weight: 800;
    }
    .data-label {
      color: var(--ink-soft);
      font-size: .88rem;
    }
    .status-line {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--green);
      font-size: .82rem;
      font-weight: 700;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 0 5px rgba(46,175,120,.13);
    }
    .compatibility {
      padding: 28px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: #fff;
      box-shadow: var(--shadow-sm);
    }
    .compatibility-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
      margin-bottom: 24px;
    }
    .compatibility-head h3 {
      margin: 0;
      font-size: 1.25rem;
      font-weight: 800;
    }
    .compatibility-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 12px;
    }
    .compat-item {
      padding: 17px 14px;
      border: 1px solid var(--line);
      border-radius: 12px;
      background: var(--mist);
    }
    .compat-item strong {
      display: block;
      margin-bottom: 3px;
      font-size: .96rem;
    }
    .compat-item span {
      color: var(--ink-soft);
      font-size: .8rem;
    }
    .article-card {
      overflow: hidden;
    }
    .article-cover {
      height: 176px;
      overflow: hidden;
      background: var(--sky);
    }
    .article-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .35s ease;
    }
    .article-card:hover .article-cover img { transform: scale(1.05); }
    .article-body { padding: 22px; }
    .article-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 9px;
      margin-bottom: 13px;
      color: var(--ink-soft);
      font-size: .78rem;
    }
    .article-link {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      margin-top: 17px;
      color: var(--blue);
      font-weight: 700;
      font-size: .88rem;
    }
    .article-link:hover { color: var(--blue-dark); }
    .faq-wrap {
      max-width: 900px;
      margin: 0 auto;
    }
    .accordion-item {
      overflow: hidden;
      margin-bottom: 11px;
      border: 1px solid var(--line) !important;
      border-radius: 13px !important;
      box-shadow: var(--shadow-sm);
    }
    .accordion-button {
      padding: 19px 22px;
      color: var(--ink);
      background: #fff;
      font-weight: 700;
      box-shadow: none !important;
    }
    .accordion-button:not(.collapsed) {
      color: var(--blue-dark);
      background: var(--sky);
    }
    .accordion-body {
      padding: 0 22px 20px;
      color: var(--ink-soft);
      background: var(--sky);
    }
    .cta-band {
      position: relative;
      overflow: hidden;
      padding: 67px 0;
      color: #fff;
      background: linear-gradient(106deg, #163b7b, #126b88);
    }
    .cta-band:after {
      content: "";
      position: absolute;
      width: 420px;
      height: 420px;
      right: -140px;
      top: -205px;
      border: 1px solid rgba(255,255,255,.18);
      border-radius: 50%;
      box-shadow: 0 0 0 26px rgba(255,255,255,.04), 0 0 0 55px rgba(255,255,255,.025);
    }
    .cta-content {
      position: relative;
      z-index: 1;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 28px;
    }
    .cta-content h2 {
      margin: 0 0 9px;
      font-size: clamp(1.75rem, 3vw, 2.5rem);
      line-height: 1.25;
      font-weight: 800;
    }
    .cta-content p {
      max-width: 650px;
      margin: 0;
      color: rgba(255,255,255,.76);
    }
    footer {
      padding: 63px 0 24px;
      color: rgba(255,255,255,.7);
      background: #101d35;
    }
    footer .brand { color: #fff; }
    footer .brand small { color: rgba(255,255,255,.52); }
    footer h3 {
      margin: 4px 0 16px;
      color: #fff;
      font-size: .94rem;
      font-weight: 700;
    }
    footer ul {
      display: grid;
      gap: 8px;
      margin: 0;
      padding: 0;
      list-style: none;
      font-size: .86rem;
    }
    footer li a { transition: color .2s ease; }
    footer li a:hover { color: #fff; }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      margin-top: 42px;
      padding-top: 19px;
      border-top: 1px solid rgba(255,255,255,.12);
      font-size: .78rem;
      color: rgba(255,255,255,.49);
    }
    :focus-visible {
      outline: 3px solid rgba(19,184,200,.55);
      outline-offset: 3px;
    }
    @media (max-width: 991px) {
      .brand-row { min-height: 70px; }
      .nav-links { gap: 2px; }
      .nav-links a { padding: 0 10px; font-size: .85rem; }
      .split-feature { grid-template-columns: 1fr; gap: 30px; }
      .split-image { min-height: 300px; }
      .compatibility-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 767px) {
      .brand-row {
        align-items: flex-start;
        flex-direction: column;
        gap: 10px;
        padding: 14px 12px;
      }
      .nav-links {
        width: 100%;
        overflow-x: auto;
        padding-bottom: 4px;
        scrollbar-width: thin;
      }
      .nav-links a { white-space: nowrap; }
      .hero-category { padding: 71px 0 68px; }
      .hero-category h1 { font-size: 2.65rem; }
      .hero-panel { grid-template-columns: 1fr; }
      .section { padding: 67px 0; }
      .section-heading { margin-bottom: 29px; }
      .cta-content {
        align-items: flex-start;
        flex-direction: column;
      }
      .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
      }
    }
    @media (max-width: 520px) {
      .brand { font-size: 1.2rem; }
      .brand-mark { width: 35px; height: 35px; }
      .hero-category h1 { font-size: 2.22rem; }
      .hero-category p { font-size: .98rem; }
      .topic-card, .data-panel, .compatibility { padding: 22px; }
      .compatibility-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
      .compat-item { padding: 13px 10px; }
      .compatibility-head { align-items: flex-start; flex-direction: column; }
      .article-cover { height: 155px; }
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}