/* roulang page: index */
:root {
    --bg-base: #070D1C;
    --bg-elev: #0D162B;
    --bg-deep: #04070F;
    --glass-bg: rgba(15, 26, 52, .55);
    --line: rgba(111, 147, 255, .2);
    --line-bright: rgba(111, 147, 255, .4);
    --primary: #3B82F6;
    --cyan: #38BDF8;
    --violet: #8B5CF6;
    --gold: #F5C97B;
    --text-hi: #F0F5FF;
    --text-mid: #B6C2DE;
    --text-low: #7E8FB0;
    --radius-card: 16px;
    --radius-btn: 10px;
    --radius-badge: 999px;
    --shadow-card: 0 8px 24px rgba(2, 6, 23, .35);
    --glow: 0 0 20px rgba(56, 189, 248, .35);
  }

  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
    background-color: var(--bg-base);
    color: var(--text-hi);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background-image:
      radial-gradient(1px 1px at 120px 180px, rgba(255, 255, 255, .55), transparent),
      radial-gradient(1.5px 1.5px at 82% 22%, rgba(255, 255, 255, .4), transparent),
      radial-gradient(1px 1px at 65% 72%, rgba(255, 255, 255, .3), transparent),
      radial-gradient(1px 1px at 38% 85%, rgba(255, 255, 255, .5), transparent),
      radial-gradient(2px 2px at 90% 64%, rgba(255, 255, 255, .28), transparent),
      radial-gradient(1px 1px at 15% 60%, rgba(255, 255, 255, .35), transparent),
      radial-gradient(1.2px 1.2px at 55% 30%, rgba(255, 255, 255, .3), transparent),
      radial-gradient(1px 1px at 28% 40%, rgba(255, 255, 255, .22), transparent);
  }

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

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

  a {
    color: inherit;
    text-decoration: none;
  }

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  textarea:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 2px;
  }

  .container-site {
    max-width: 1152px;
    margin: 0 auto;
    padding: 0 24px;
  }

  @media (max-width: 640px) {
    .container-site {
      padding: 0 16px;
    }
  }

  /* ===== Header ===== */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: 76px;
    background: rgba(7, 13, 28, .82);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
  }

  .header-inner {
    height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .logo-star {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    color: var(--cyan);
    border-radius: 8px;
    background: rgba(56, 189, 248, .1);
    border: 1px solid rgba(56, 189, 248, .25);
  }

  .logo-text {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: .02em;
    white-space: nowrap;
    color: var(--text-hi);
  }

  .desktop-nav {
    display: flex;
    align-items: center;
    gap: 30px;
  }

  .nav-link {
    position: relative;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: .02em;
    color: var(--text-mid);
    padding: 26px 0;
    transition: color .2s, text-shadow .2s;
  }

  .nav-link:hover {
    color: var(--text-hi);
    text-shadow: 0 0 10px rgba(56, 189, 248, .4);
  }

  .nav-link.active {
    color: var(--text-hi);
    text-shadow: 0 0 12px rgba(139, 92, 246, .7);
  }

  .nav-link.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 8px;
    transform: translateX(-50%);
    width: 32px;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--cyan), var(--violet));
    box-shadow: 0 0 8px rgba(56, 189, 248, .6);
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 14px;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 22px;
    border-radius: var(--radius-btn);
    background: linear-gradient(135deg, #3B82F6, #38BDF8);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    line-height: 1;
    border: none;
    cursor: pointer;
    transition: filter .25s, box-shadow .25s, transform .25s;
    box-shadow: 0 4px 16px rgba(59, 130, 246, .3);
  }

  .btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 0 22px rgba(56, 189, 248, .5);
    transform: translateY(-1px);
  }

  .btn-primary:active {
    transform: scale(.98);
  }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 22px;
    border-radius: var(--radius-btn);
    border: 1px solid rgba(111, 147, 255, .33);
    background: transparent;
    color: var(--text-hi);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background .25s, border-color .25s, transform .25s;
  }

  .btn-ghost:hover {
    background: rgba(255, 255, 255, .06);
    border-color: rgba(111, 147, 255, .55);
    transform: translateY(-1px);
  }

  .btn-ghost:active {
    transform: scale(.98);
  }

  .menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--line);
    border-radius: 10px;
    color: var(--text-hi);
    cursor: pointer;
    transition: border-color .25s, background .25s;
  }

  .menu-toggle:hover {
    border-color: var(--line-bright);
    background: rgba(255, 255, 255, .05);
  }

  @media (max-width: 1023px) {
    .desktop-nav {
      display: none;
    }
    .menu-toggle {
      display: flex;
    }
  }

  @media (max-width: 520px) {
    .header-actions .btn-primary {
      display: none;
    }
  }

  /* ===== Mobile Drawer ===== */
  .drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: 140;
    background: rgba(4, 7, 15, .55);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s, visibility .3s;
  }

  .drawer-backdrop.open {
    opacity: 1;
    visibility: visible;
  }

  .mobile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    max-width: 85%;
    z-index: 150;
    background: rgba(7, 13, 28, .97);
    backdrop-filter: blur(20px);
    border-left: 1px solid var(--line);
    padding: 22px;
    transform: translateX(100%);
    transition: transform .3s ease;
    display: flex;
    flex-direction: column;
  }

  .mobile-drawer.open {
    transform: translateX(0);
  }

  .drawer-head {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 18px;
    border-bottom: 1px solid rgba(255, 255, 255, .06);
    margin-bottom: 8px;
  }

  .drawer-head .logo-text {
    font-size: 16px;
    flex: 1;
  }

  .drawer-close {
    width: 32px;
    height: 32px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: transparent;
    color: var(--text-mid);
    font-size: 18px;
    cursor: pointer;
    line-height: 1;
  }

  .mobile-drawer nav a {
    display: block;
    padding: 13px 0;
    border-bottom: 1px solid rgba(255, 255, 255, .06);
    color: var(--text-mid);
    font-size: 15px;
    transition: color .25s, padding-left .25s;
  }

  .mobile-drawer nav a:hover {
    color: var(--cyan);
    padding-left: 6px;
  }

  .mobile-drawer nav a.active {
    color: var(--cyan);
    text-shadow: 0 0 10px rgba(56, 189, 248, .4);
  }

  .mobile-drawer .btn-primary {
    margin-top: 24px;
    width: 100%;
  }

  /* ===== Hero ===== */
  .hero {
    min-height: 82vh;
    display: flex;
    align-items: center;
    position: relative;
    background-image: url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
    padding: 140px 0 80px;
  }

  .hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(7, 13, 28, .62) 0%, rgba(7, 13, 28, .76) 55%, rgba(7, 13, 28, .94) 100%);
  }

  .hero-content {
    position: relative;
    z-index: 2;
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 14px;
    border-radius: var(--radius-badge);
    border: 1px solid var(--line);
    background: rgba(15, 26, 52, .5);
    color: var(--cyan);
    font-size: 13px;
    letter-spacing: .04em;
    margin-bottom: 24px;
  }

  .eyebrow .star-dot {
    color: var(--gold);
  }

  .hero h1 {
    font-size: clamp(2rem, 4vw, 3.25rem);
    font-weight: 700;
    line-height: 1.25;
    max-width: 820px;
  }

  .hero-sub {
    margin-top: 20px;
    font-size: 17px;
    line-height: 1.7;
    color: var(--text-mid);
    max-width: 640px;
  }

  .hero-actions {
    margin-top: 36px;
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
  }

  .hero-stats {
    margin-top: 64px;
    display: flex;
    align-items: center;
    gap: 32px;
    border-top: 1px solid var(--line);
    padding-top: 28px;
    max-width: 560px;
    flex-wrap: wrap;
  }

  .hero-stats .stat {
    font-size: 26px;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .hero-stats .stat span {
    font-size: 13px;
    color: var(--text-low);
    font-weight: 400;
  }

  .hero-stats .divider {
    width: 1px;
    height: 36px;
    background: var(--line);
  }

  /* ===== Section ===== */
  .section {
    padding: 80px 0;
  }

  @media (max-width: 768px) {
    .section {
      padding: 48px 0;
    }
  }

  .section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 14px;
    border-radius: var(--radius-badge);
    background: rgba(56, 189, 248, .08);
    border: 1px solid rgba(56, 189, 248, .25);
    color: var(--cyan);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: .08em;
  }

  .section-head {
    margin-bottom: 44px;
  }

  .section-head h2 {
    margin-top: 16px;
    font-size: clamp(1.35rem, 2vw, 1.75rem);
    font-weight: 600;
    line-height: 1.3;
  }

  .section-head p {
    margin-top: 10px;
    color: var(--text-mid);
    font-size: 15px;
    max-width: 520px;
  }

  .head-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 44px;
  }

  .head-row .view-all {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-mid);
    font-size: 14px;
    transition: color .25s, gap .25s;
    flex-shrink: 0;
    padding-bottom: 6px;
  }

  .head-row .view-all:hover {
    color: var(--cyan);
    gap: 10px;
  }

  /* ===== Trust Band ===== */
  .trust-band {
    background: #0D1528;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .trust-band-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 26px 0;
    flex-wrap: wrap;
  }

  .trust-item {
    display: flex;
    align-items: baseline;
    gap: 10px;
  }

  .trust-item b {
    display: block;
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    line-height: 1.1;
  }

  .trust-item .trust-label {
    font-size: 13px;
    color: var(--text-mid);
  }

  .trust-item .trust-src {
    display: block;
    font-size: 12px;
    color: var(--text-low);
    margin-top: 4px;
  }

  /* ===== Glass Card ===== */
  .glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    backdrop-filter: blur(14px);
    box-shadow: var(--shadow-card);
    transition: border-color .3s, background .3s, transform .3s, box-shadow .3s;
  }

  .glass-card::before {
    content: "";
    display: block;
    height: 2px;
    border-radius: 2px 2px 0 0;
    background: linear-gradient(90deg, var(--cyan), var(--violet));
    opacity: .7;
  }

  .glass-card:hover {
    border-color: rgba(111, 147, 255, .4);
    background: rgba(255, 255, 255, .07);
    transform: translateY(-3px);
    box-shadow: var(--shadow-card), var(--glow);
  }

  /* ===== Solutions ===== */
  .solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
  }

  .solution-card {
    position: relative;
    padding: 28px 26px 24px;
  }

  .solution-card.featured {
    transform: translateY(-16px);
    border: 1px solid rgba(56, 189, 248, .4);
    box-shadow: 0 0 30px rgba(56, 189, 248, .12), var(--shadow-card);
  }

  .solution-card.featured::before {
    opacity: 1;
    height: 3px;
  }

  .solution-card.featured:hover {
    transform: translateY(-20px);
    box-shadow: 0 0 36px rgba(56, 189, 248, .2), var(--shadow-card);
  }

  .featured-badge {
    position: absolute;
    top: -11px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--cyan), var(--violet));
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .04em;
    padding: 4px 14px;
    border-radius: var(--radius-badge);
    box-shadow: 0 4px 12px rgba(56, 189, 248, .3);
    white-space: nowrap;
  }

  .solution-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: rgba(56, 189, 248, .1);
    border: 1px solid rgba(56, 189, 248, .22);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
  }

  .solution-icon svg {
    width: 24px;
    height: 24px;
  }

  .solution-card.featured .solution-icon {
    background: rgba(139, 92, 246, .12);
    border-color: rgba(139, 92, 246, .3);
  }

  .solution-card h3 {
    font-size: 17px;
    font-weight: 600;
    line-height: 1.4;
  }

  .solution-card p {
    margin-top: 10px;
    font-size: 14px;
    line-height: 1.75;
    color: var(--text-mid);
  }

  .card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 18px;
    font-size: 13px;
    color: var(--cyan);
    transition: gap .25s;
  }

  .card-link:hover {
    gap: 10px;
  }

  @media (max-width: 1023px) {
    .solutions-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .solution-card.featured {
      grid-column: span 2;
      transform: none;
    }
    .solution-card.featured:hover {
      transform: translateY(-3px);
    }
  }

  @media (max-width: 640px) {
    .solutions-grid {
      grid-template-columns: 1fr;
    }
    .solution-card.featured {
      grid-column: auto;
    }
  }

  /* ===== Success ===== */
  .success-section {
    background: linear-gradient(180deg, #0A1222, #0D162B 60%, #091120);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    position: relative;
    overflow: hidden;
  }

  .success-section::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
      radial-gradient(1.5px 1.5px at 12% 20%, rgba(255, 255, 255, .45), transparent),
      radial-gradient(1px 1px at 88% 55%, rgba(255, 255, 255, .3), transparent),
      radial-gradient(2px 2px at 42% 82%, rgba(255, 255, 255, .3), transparent),
      radial-gradient(1px 1px at 70% 28%, rgba(255, 255, 255, .35), transparent),
      radial-gradient(1px 1px at 55% 48%, rgba(255, 255, 255, .2), transparent);
  }

  .success-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    position: relative;
  }

  .success-summary h2 {
    margin-top: 16px;
    font-size: clamp(1.35rem, 2vw, 1.75rem);
    font-weight: 600;
    line-height: 1.4;
    max-width: 380px;
  }

  .success-quote {
    margin-top: 24px;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-mid);
    border-left: 2px solid transparent;
    border-image: linear-gradient(180deg, var(--cyan), var(--violet)) 1;
    padding-left: 18px;
  }

  .quote-author {
    display: block;
    margin-top: 14px;
    font-size: 13px;
    color: var(--text-low);
  }

  .data-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px 48px;
  }

  .data-num {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    color: var(--gold);
    line-height: 1.2;
  }

  .data-label {
    margin-top: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-hi);
  }

  .data-src {
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-low);
  }

  @media (max-width: 768px) {
    .success-grid {
      grid-template-columns: 1fr;
      gap: 40px;
    }
    .data-grid {
      gap: 32px 24px;
    }
  }

  /* ===== CMS Latest ===== */
  .cms-grid {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    grid-template-rows: repeat(2, auto);
    gap: 24px;
  }

  .cms-card {
    display: block;
    background: var(--glass-bg);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    overflow: hidden;
    backdrop-filter: blur(10px);
    transition: border-color .3s, transform .3s, box-shadow .3s;
  }

  .cms-card:hover {
    border-color: var(--line-bright);
    transform: translateY(-3px);
    box-shadow: var(--shadow-card);
  }

  .cms-card-lg {
    grid-row: span 2;
    display: flex;
    flex-direction: column;
  }

  .cms-cover {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #0D162B, #1E1B4B);
  }

  .cms-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s;
    min-height: 150px;
  }

  .cms-card:hover .cms-cover img {
    transform: scale(1.04);
  }

  .cms-card-lg .cms-cover {
    flex: 1;
    min-height: 240px;
  }

  .cms-card-sm .cms-cover {
    height: 120px;
  }

  .cms-cover .cms-ph {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyan);
    font-size: 34px;
    background: radial-gradient(circle at 50% 45%, rgba(56, 189, 248, .18) 0%, transparent 60%);
  }

  .cms-cat {
    position: absolute;
    left: 12px;
    top: 12px;
    padding: 4px 12px;
    background: rgba(7, 13, 28, .72);
    border: 1px solid rgba(56, 189, 248, .3);
    color: var(--cyan);
    font-size: 12px;
    border-radius: var(--radius-badge);
    backdrop-filter: blur(4px);
  }

  .cms-time {
    position: absolute;
    right: 12px;
    bottom: 12px;
    font-size: 12px;
    color: var(--text-hi);
    background: rgba(7, 13, 28, .6);
    padding: 3px 10px;
    border-radius: 8px;
    backdrop-filter: blur(4px);
  }

  .cms-body {
    padding: 20px 22px 22px;
  }

  .cms-body h3 {
    font-size: 17px;
    font-weight: 600;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .cms-body p {
    margin-top: 8px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-mid);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .cms-card-sm .cms-body {
    padding: 14px 18px 16px;
  }

  .cms-card-sm .cms-body h3 {
    font-size: 15px;
  }

  .cms-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 14px;
    color: var(--cyan);
    font-size: 13px;
    transition: gap .25s;
  }

  .cms-card:hover .cms-more {
    gap: 10px;
  }

  .cms-empty {
    min-height: 160px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: var(--glass-bg);
    border: 1px dashed var(--line-bright);
    border-radius: var(--radius-card);
    color: var(--text-mid);
    font-size: 14px;
  }

  .cms-empty .empty-star {
    font-size: 30px;
    color: var(--gold);
  }

  @media (max-width: 768px) {
    .cms-grid {
      grid-template-columns: 1fr;
      grid-template-rows: auto;
    }
    .cms-card-lg {
      grid-row: auto;
    }
    .cms-card-lg .cms-cover {
      min-height: 180px;
    }
  }

  /* ===== FAQ ===== */
  .faq-list {
    max-width: 820px;
    margin: 0 auto;
  }

  .faq-item {
    background: var(--glass-bg);
    border: 1px solid var(--line);
    border-radius: 14px;
    margin-bottom: 14px;
    overflow: hidden;
    transition: border-color .3s;
  }

  .faq-item.open {
    border-color: rgba(56, 189, 248, .35);
  }

  .faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 22px;
    background: transparent;
    border: none;
    color: var(--text-hi);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: color .25s;
  }

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

  .faq-icon {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    border: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyan);
    font-size: 16px;
    flex-shrink: 0;
    transition: transform .3s, border-color .3s;
  }

  .faq-item.open .faq-icon {
    transform: rotate(45deg);
    border-color: rgba(56, 189, 248, .45);
  }

  .faq-a {
    display: none;
    margin: 0 22px 20px;
    padding-left: 16px;
    border-left: 2px solid var(--cyan);
    color: var(--text-mid);
    font-size: 14px;
    line-height: 1.85;
  }

  .faq-item.open .faq-a {
    display: block;
  }

  /* ===== CTA Band ===== */
  .cta-band {
    position: relative;
    padding: 90px 0;
    text-align: center;
    background-image: linear-gradient(rgba(7, 13, 28, .72), rgba(7, 13, 28, .88)), url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
  }

  .cta-band h2 {
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    font-weight: 700;
    line-height: 1.35;
    max-width: 640px;
    margin: 0 auto;
  }

  .cta-band p {
    margin-top: 12px;
    color: var(--text-mid);
    font-size: 15px;
  }

  .cta-band .btn-primary {
    margin-top: 32px;
    padding: 14px 32px;
    font-size: 15px;
  }

  /* ===== Modal ===== */
  .modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    visibility: hidden;
    opacity: 0;
    transition: opacity .3s, visibility .3s;
  }

  .modal.open {
    visibility: visible;
    opacity: 1;
  }

  .modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(4, 7, 15, .78);
    backdrop-filter: blur(8px);
  }

  .modal-panel {
    position: relative;
    width: 100%;
    max-width: 460px;
    margin: 0 16px;
    background: rgba(15, 26, 52, .94);
    backdrop-filter: blur(24px);
    border: 1px solid var(--line-bright);
    border-radius: 18px;
    padding: 32px;
    box-shadow: 0 24px 60px rgba(2, 6, 23, .6), 0 0 30px rgba(56, 189, 248, .12);
    transform: translateY(14px);
    transition: transform .3s;
  }

  .modal.open .modal-panel {
    transform: translateY(0);
  }

  .modal-panel h2 {
    font-size: 22px;
    font-weight: 700;
  }

  .modal-panel .modal-sub {
    margin-top: 8px;
    font-size: 14px;
    color: var(--text-mid);
  }

  .modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 34px;
    height: 34px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: transparent;
    color: var(--text-mid);
    font-size: 18px;
    cursor: pointer;
    transition: color .25s, border-color .25s;
  }

  .modal-close:hover {
    color: var(--text-hi);
    border-color: var(--line-bright);
  }

  .modal-form {
    margin-top: 24px;
  }

  .form-group {
    margin-bottom: 16px;
  }

  .form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-mid);
    margin-bottom: 6px;
  }

  .form-group input,
  .form-group textarea {
    width: 100%;
    padding: 11px 14px;
    border-radius: 10px;
    border: 1px solid var(--line);
    background: rgba(7, 13, 28, .6);
    color: var(--text-hi);
    font-size: 14px;
    transition: border-color .25s, box-shadow .25s;
    resize: none;
  }

  .form-group input::placeholder,
  .form-group textarea::placeholder {
    color: var(--text-low);
  }

  .form-group input:focus,
  .form-group textarea:focus {
    outline: none;
    border-color: rgba(56, 189, 248, .5);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, .12);
  }

  .modal-form .btn-primary {
    width: 100%;
    padding: 14px;
    margin-top: 6px;
  }

  .privacy-note {
    margin-top: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-low);
    text-align: center;
  }

  .form-success {
    display: none;
    text-align: center;
    padding: 44px 0;
    color: var(--cyan);
    font-size: 15px;
    line-height: 1.8;
  }

  .form-success .success-star {
    display: block;
    font-size: 38px;
    color: var(--gold);
    margin-bottom: 14px;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--line);
  }

  .footer-star-line {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(56, 189, 248, .5), rgba(139, 92, 246, .5), transparent);
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 48px;
    padding: 56px 0 40px;
  }

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

  .footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-mid);
    max-width: 320px;
  }

  .footer-col h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-hi);
    margin-bottom: 16px;
  }

  .footer-col a {
    display: block;
    padding: 6px 0;
    font-size: 14px;
    color: var(--text-mid);
    transition: color .25s, padding-left .25s;
  }

  .footer-col a:hover {
    color: var(--cyan);
    padding-left: 6px;
  }

  .footer-col p {
    font-size: 14px;
    color: var(--text-mid);
    padding: 6px 0;
  }

  .footer-bottom {
    border-top: 1px solid rgba(111, 147, 255, .1);
    padding: 18px 0;
  }

  .footer-bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    color: var(--text-low);
    font-size: 13px;
    flex-wrap: wrap;
  }

  .footer-bottom-links {
    display: flex;
    gap: 20px;
  }

  .footer-bottom-links a {
    color: var(--text-low);
    transition: color .25s;
  }

  .footer-bottom-links a:hover {
    color: var(--text-mid);
  }

  @media (max-width: 768px) {
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 32px;
      padding: 40px 0 32px;
    }
    .footer-bottom-inner {
      flex-direction: column;
      align-items: flex-start;
    }
  }

/* roulang page: category1 */
:root {
            --bg-base: #070D1C;
            --bg-elev: #0D162B;
            --bg-deep: #04070F;
            --glass-bg: rgba(15, 26, 52, .55);
            --line: rgba(111, 147, 255, .2);
            --line-bright: rgba(111, 147, 255, .4);
            --primary: #3B82F6;
            --cyan: #38BDF8;
            --violet: #8B5CF6;
            --gold: #F5C97B;
            --text-hi: #F0F5FF;
            --text-mid: #B6C2DE;
            --text-low: #7E8FB0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background-color: var(--bg-base);
            background-image:
                radial-gradient(1px 1px at 18% 28%, rgba(255, 255, 255, .18) 0, transparent 100%),
                radial-gradient(1px 1px at 82% 18%, rgba(190, 219, 255, .14) 0, transparent 100%),
                radial-gradient(1.5px 1.5px at 62% 86%, rgba(245, 201, 123, .12) 0, transparent 100%),
                radial-gradient(1px 1px at 38% 72%, rgba(139, 92, 246, .12) 0, transparent 100%);
            color: var(--text-hi);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        .container-site {
            max-width: 1152px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ---------- Header ---------- */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 76px;
            background: rgba(7, 13, 28, .82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(111, 147, 255, .2);
            z-index: 100;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 600;
            color: var(--text-hi);
            white-space: nowrap;
        }

        .logo-star {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            background: rgba(56, 189, 248, .1);
            border: 1px solid rgba(56, 189, 248, .22);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--cyan);
            flex-shrink: 0;
        }

        .desktop-nav {
            display: flex;
            gap: 32px;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-mid);
            letter-spacing: .02em;
            padding: 8px 2px;
            position: relative;
            transition: color .2s ease;
        }

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

        .nav-link.active {
            color: var(--text-hi);
            text-shadow: 0 0 12px rgba(56, 189, 248, .5);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--cyan), var(--violet));
            width: 100%;
            min-width: 32px;
            box-shadow: 0 0 12px rgba(56, 189, 248, .35);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            color: #fff;
            font-weight: 500;
            font-size: 14px;
            box-shadow: 0 0 16px rgba(56, 189, 248, .25);
            transition: all .25s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(56, 189, 248, .45);
            filter: brightness(1.08);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0) scale(.98);
        }

        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--line);
            align-items: center;
            justify-content: center;
            color: var(--text-mid);
            transition: all .2s ease;
            background: rgba(255, 255, 255, .03);
        }

        .menu-toggle:hover {
            border-color: var(--line-bright);
            color: var(--text-hi);
        }

        /* ---------- Mobile Menu ---------- */
        .mobile-menu {
            position: fixed;
            top: 76px;
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(7, 13, 28, .98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--line);
            padding: 16px 24px 24px;
            transform: translateY(-120%);
            transition: transform .3s ease;
            opacity: 0;
            visibility: hidden;
        }

        .mobile-menu.is-open {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }

        .mobile-menu a {
            display: block;
            padding: 14px 0;
            font-size: 15px;
            color: var(--text-mid);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            transition: color .2s;
        }

        .mobile-menu a:hover {
            color: var(--text-hi);
        }

        .mobile-menu a.active {
            color: var(--text-hi);
            text-shadow: 0 0 10px rgba(56, 189, 248, .4);
        }

        .mobile-menu .btn-primary {
            margin-top: 16px;
            width: 100%;
        }

        /* ---------- Banner ---------- */
        .page-banner {
            position: relative;
            padding: 150px 0 76px;
            background:
                linear-gradient(180deg, rgba(7, 13, 28, .52), rgba(7, 13, 28, .86)),
                url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            border-bottom: 1px solid var(--line);
        }

        .page-banner .banner-inner {
            position: relative;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-low);
            margin-bottom: 24px;
        }

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

        .breadcrumb .sep {
            color: var(--text-low);
        }

        .page-banner h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 700;
            line-height: 1.18;
            margin-bottom: 16px;
            letter-spacing: .02em;
            color: var(--text-hi);
            text-shadow: 0 2px 24px rgba(7, 13, 28, .6);
        }

        .banner-desc {
            font-size: 17px;
            color: var(--text-mid);
            max-width: 560px;
            line-height: 1.7;
        }

        /* ---------- Content Section ---------- */
        .content-section {
            padding: 80px 0;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(56, 189, 248, .08);
            border: 1px solid rgba(56, 189, 248, .2);
            color: var(--cyan);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: .04em;
            margin-bottom: 16px;
        }

        .split-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .split-text h2 {
            font-size: clamp(1.35rem, 2vw, 1.75rem);
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 24px;
            color: var(--text-hi);
        }

        .split-text p {
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .feature-list {
            list-style: none;
            margin: 28px 0 0;
            display: grid;
            gap: 14px;
        }

        .feature-list li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            color: var(--text-mid);
            font-size: 14px;
            line-height: 1.7;
        }

        .feature-list li::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--cyan), var(--violet));
            margin-top: 9px;
            flex-shrink: 0;
            box-shadow: 0 0 8px rgba(56, 189, 248, .5);
        }

        .role-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        .role-tags span {
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .04);
            border: 1px solid var(--line);
            color: var(--text-mid);
            font-size: 13px;
            transition: border-color .2s;
        }

        .role-tags span:hover {
            border-color: var(--line-bright);
        }

        .split-image {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--line);
            box-shadow: 0 8px 24px rgba(2, 6, 23, .35);
        }

        .split-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .split-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 66%, rgba(7, 13, 28, .3));
            pointer-events: none;
        }

        /* ---------- Cards Section ---------- */
        .cards-section {
            padding: 80px 0;
            background: var(--bg-elev);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            position: relative;
        }

        .cards-section h2 {
            font-size: clamp(1.35rem, 2vw, 1.75rem);
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--text-hi);
        }

        .section-desc {
            color: var(--text-mid);
            font-size: 15px;
            margin-bottom: 40px;
        }

        .info-cards-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .info-card {
            position: relative;
            padding: 32px 32px 32px 36px;
            border-radius: 16px;
            background: var(--glass-bg);
            border: 1px solid var(--line);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            overflow: hidden;
            transition: border-color .25s ease, transform .25s ease;
        }

        .info-card:hover {
            border-color: var(--line-bright);
            transform: translateY(-2px);
        }

        .info-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, var(--cyan), var(--violet));
        }

        .card-index {
            position: absolute;
            top: 24px;
            right: 28px;
            font-size: 42px;
            font-weight: 700;
            color: rgba(255, 255, 255, .07);
            line-height: 1;
        }

        .info-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 12px;
            padding-left: 10px;
            color: var(--text-hi);
        }

        .info-card p {
            padding-left: 10px;
            color: var(--text-mid);
            font-size: 14px;
            line-height: 1.85;
        }

        /* ---------- CTA Section ---------- */
        .cta-section {
            padding: 80px 0;
            background:
                linear-gradient(180deg, rgba(7, 13, 28, .42), rgba(7, 13, 28, .9)),
                url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
            text-align: center;
            border-top: 1px solid var(--line);
        }

        .cta-section h2 {
            font-size: clamp(1.35rem, 2vw, 1.75rem);
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-hi);
        }

        .cta-section p {
            color: var(--text-mid);
            font-size: 15px;
            margin-bottom: 28px;
        }

        .cta-section .btn-primary {
            padding: 12px 32px;
            font-size: 15px;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--bg-deep);
            position: relative;
        }

        .footer-star-line {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(56, 189, 248, .4), rgba(139, 92, 246, .4), transparent);
            margin-bottom: 48px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand p {
            color: var(--text-low);
            font-size: 14px;
            line-height: 1.75;
            margin-top: 16px;
            max-width: 340px;
        }

        .footer-col h3 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 16px;
        }

        .footer-col a,
        .footer-col p {
            display: block;
            color: var(--text-low);
            font-size: 13px;
            margin-bottom: 10px;
            transition: color .2s;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding: 20px 0;
        }

        .footer-bottom-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            color: var(--text-low);
            font-size: 12px;
        }

        .footer-bottom-links a {
            color: var(--text-low);
            margin-left: 16px;
            transition: color .2s;
        }

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

        /* ---------- Modal ---------- */
        .modal {
            position: fixed;
            inset: 0;
            z-index: 300;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            background: rgba(4, 7, 15, .72);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            opacity: 0;
            visibility: hidden;
            transition: all .3s ease;
        }

        .modal.is-open {
            opacity: 1;
            visibility: visible;
        }

        .modal-dialog {
            width: 100%;
            max-width: 480px;
            background: rgba(13, 22, 43, .96);
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 32px;
            position: relative;
            box-shadow: 0 16px 48px rgba(2, 6, 23, .6);
            transform: translateY(16px);
            transition: transform .3s ease;
        }

        .modal.is-open .modal-dialog {
            transform: translateY(0);
        }

        .modal-close {
            position: absolute;
            top: 14px;
            right: 14px;
            color: var(--text-low);
            font-size: 22px;
            line-height: 1;
            padding: 4px 8px;
            border-radius: 8px;
            transition: color .2s;
        }

        .modal-close:hover {
            color: var(--text-hi);
        }

        .modal h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-hi);
        }

        .modal .modal-sub {
            color: var(--text-low);
            font-size: 13px;
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            color: var(--text-mid);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 10px 14px;
            border-radius: 10px;
            background: rgba(7, 13, 28, .6);
            border: 1px solid var(--line);
            color: var(--text-hi);
            font-size: 14px;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--cyan);
            box-shadow: 0 0 0 3px rgba(56, 189, 248, .15);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }

        .privacy-note {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            color: var(--text-low);
            margin-top: 14px;
            line-height: 1.5;
        }

        .privacy-note svg {
            flex-shrink: 0;
            color: var(--text-low);
        }

        .form-submit {
            width: 100%;
            margin-top: 8px;
        }

        .form-hidden {
            display: none;
        }

        .form-success {
            text-align: center;
            padding: 32px 0;
        }

        .form-success .success-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(56, 189, 248, .12);
            border: 1px solid rgba(56, 189, 248, .25);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            color: var(--cyan);
            font-size: 24px;
        }

        .form-success p {
            color: var(--text-mid);
            font-size: 14px;
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1023px) {
            .desktop-nav {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }

            .header-cta-btn {
                display: none !important;
            }
        }

        @media (max-width: 767px) {
            .container-site {
                padding: 0 16px;
            }

            .page-banner {
                padding: 120px 0 56px;
            }

            .page-banner h1 {
                font-size: 1.85rem;
            }

            .banner-desc {
                font-size: 15px;
            }

            .content-section {
                padding: 48px 0;
            }

            .cards-section {
                padding: 48px 0;
            }

            .cta-section {
                padding: 56px 0;
            }

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

            .info-cards-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-star-line {
                margin-bottom: 32px;
            }

            .footer-bottom-inner {
                flex-direction: column;
                text-align: center;
            }

            .footer-bottom-links a {
                margin-left: 0;
                margin-right: 16px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.65rem;
            }

            .info-card {
                padding: 24px 24px 24px 28px;
            }

            .card-index {
                top: 18px;
                right: 20px;
                font-size: 36px;
            }

            .modal-dialog {
                padding: 24px;
            }

            .role-tags span {
                font-size: 12px;
                padding: 5px 12px;
            }
        }

/* roulang page: article */
/* ========== 设计变量 ========== */
        :root {
            --bg-base: #070D1C;
            --bg-elev: #0D162B;
            --bg-deep: #04070F;
            --glass-bg: rgba(15, 26, 52, .55);
            --line: rgba(111, 147, 255, .2);
            --line-bright: rgba(111, 147, 255, .4);
            --primary: #3B82F6;
            --cyan: #38BDF8;
            --violet: #8B5CF6;
            --gold: #F5C97B;
            --text-hi: #F0F5FF;
            --text-mid: #B6C2DE;
            --text-low: #7E8FB0;
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-card: 0 8px 24px rgba(2, 6, 23, .35);
            --shadow-glow: 0 0 20px rgba(56, 189, 248, .35);
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            background-color: var(--bg-base);
            background-image:
                radial-gradient(1px 1px at 18% 28%, rgba(255, 255, 255, .07) 50%, transparent 50%),
                radial-gradient(1px 1px at 78% 15%, rgba(255, 255, 255, .05) 50%, transparent 50%),
                radial-gradient(1.5px 1.5px at 40% 76%, rgba(56, 189, 248, .07) 50%, transparent 50%),
                radial-gradient(1px 1px at 62% 55%, rgba(139, 92, 246, .06) 50%, transparent 50%),
                radial-gradient(1px 1px at 88% 82%, rgba(255, 255, 255, .04) 50%, transparent 50%);
            color: var(--text-hi);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 15px;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
        }
        ::selection {
            background: rgba(56, 189, 248, .28);
            color: var(--text-hi);
        }

        .container-site {
            max-width: 1152px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ========== Header ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 76px;
            background: rgba(7, 13, 28, .82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--line);
            box-shadow: 0 4px 30px rgba(2, 6, 23, .3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-star {
            display: flex;
            align-items: center;
            color: var(--cyan);
            transition: all .35s ease;
        }
        .logo:hover .logo-star {
            filter: drop-shadow(0 0 8px rgba(56, 189, 248, .55));
            transform: rotate(15deg) scale(1.08);
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: .02em;
            background: linear-gradient(120deg, #F0F5FF 30%, #B6C2DE 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            margin-left: 24px;
        }
        .nav-link {
            position: relative;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-mid);
            letter-spacing: .02em;
            padding: 8px 2px;
            transition: color .25s ease;
            outline: none;
        }
        .nav-link:hover {
            color: var(--text-hi);
        }
        .nav-link:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 4px;
            border-radius: 4px;
        }
        .nav-link.active {
            color: var(--text-hi);
            text-shadow: 0 0 12px rgba(56, 189, 248, .4);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: -3px;
            width: 36px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--cyan), var(--violet));
            box-shadow: 0 0 8px rgba(56, 189, 248, .5);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        /* ========== 按钮 ========== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--primary), var(--cyan));
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: .02em;
            white-space: nowrap;
            box-shadow: 0 4px 16px rgba(59, 130, 246, .25);
            transition: all .3s ease;
        }
        .btn-primary:hover {
            box-shadow: 0 6px 28px rgba(56, 189, 248, .4);
            filter: brightness(1.1);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(.98);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--cyan);
            outline-offset: 3px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(111, 147, 255, .33);
            background: transparent;
            color: var(--text-hi);
            font-size: 14px;
            font-weight: 500;
            transition: all .3s ease;
            white-space: nowrap;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, .06);
            border-color: var(--line-bright);
        }
        .btn-ghost:active {
            transform: scale(.98);
        }
        .menu-toggle {
            display: none;
            color: var(--text-hi);
            padding: 8px;
            border-radius: 8px;
            transition: background .2s;
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, .06);
        }

        /* ========== 移动端菜单 ========== */
        .mobile-menu {
            position: fixed;
            top: 76px;
            left: 0;
            right: 0;
            z-index: 99;
            background: rgba(7, 13, 28, .98);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--line);
            display: none;
            padding: 6px 0;
            box-shadow: 0 16px 40px rgba(2, 6, 23, .5);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-link {
            display: block;
            padding: 14px 24px;
            font-size: 15px;
            color: var(--text-mid);
            border-bottom: 1px solid rgba(255, 255, 255, .05);
            transition: all .2s ease;
        }
        .mobile-link:last-child {
            border-bottom: none;
        }
        .mobile-link:hover {
            color: var(--text-hi);
        }
        .mobile-link.active {
            color: var(--text-hi);
            border-left: 2px solid var(--cyan);
            padding-left: 22px;
            background: linear-gradient(90deg, rgba(56, 189, 248, .06), transparent);
        }

        /* ========== 文章横幅 ========== */
        .article-hero {
            position: relative;
            padding: 64px 0 56px;
            background-image:
                linear-gradient(180deg, rgba(7, 13, 28, .55), rgba(7, 13, 28, .95)),
                url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--line);
        }
        .article-hero::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 25% 0%, rgba(139, 92, 246, .12), transparent 55%);
            pointer-events: none;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 22px;
            position: relative;
            z-index: 1;
            font-size: 13px;
            color: var(--text-low);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-mid);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: var(--cyan);
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, .2);
        }
        .breadcrumb .current {
            max-width: 220px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            color: var(--text-low);
        }
        .article-title {
            position: relative;
            z-index: 1;
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: .01em;
            margin-bottom: 20px;
            max-width: 820px;
            color: var(--text-hi);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 28px;
            position: relative;
            z-index: 1;
            font-size: 13px;
            color: var(--text-low);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-icon {
            color: var(--cyan);
            opacity: .8;
            flex-shrink: 0;
        }

        /* ========== 正文阅读区 ========== */
        .article-main {
            max-width: 760px;
            margin: 0 auto;
            padding: 52px 24px 0;
        }
        .cms-article-body {
            font-size: 16px;
            color: var(--text-mid);
            line-height: 1.9;
            letter-spacing: .01em;
        }
        .cms-article-body>p,
        .cms-article-body p {
            margin-bottom: 24px;
            max-width: 700px;
        }
        .cms-article-body h2 {
            font-size: 24px;
            font-weight: 600;
            color: var(--text-hi);
            margin: 42px 0 16px;
            line-height: 1.4;
            max-width: 700px;
        }
        .cms-article-body h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-hi);
            margin: 32px 0 14px;
            line-height: 1.5;
            max-width: 700px;
        }
        .cms-article-body h2::before,
        .cms-article-body h3::before {
            content: "✦";
            color: var(--cyan);
            margin-right: 8px;
            font-size: .65em;
            vertical-align: middle;
        }
        .cms-article-body blockquote {
            border-left: 2px solid var(--cyan);
            margin: 28px 0;
            padding: 14px 24px;
            color: var(--text-mid);
            background: linear-gradient(90deg, rgba(56, 189, 248, .06), transparent 85%);
            border-radius: 0 12px 12px 0;
            font-size: 15px;
        }
        .cms-article-body img {
            border-radius: var(--radius-card);
            margin: 28px 0;
            box-shadow: var(--shadow-card);
            background: linear-gradient(135deg, var(--bg-elev), var(--bg-deep));
        }
        .cms-article-body ul,
        .cms-article-body ol {
            margin: 0 0 24px;
            padding-left: 24px;
        }
        .cms-article-body li {
            margin-bottom: 8px;
        }
        .cms-article-body a {
            color: var(--cyan);
            border-bottom: 1px solid rgba(56, 189, 248, .3);
            transition: all .2s;
            word-break: break-word;
        }
        .cms-article-body a:hover {
            color: var(--text-hi);
            border-color: var(--cyan);
        }
        .cms-article-body pre {
            background: var(--bg-deep);
            border: 1px solid var(--line);
            border-radius: 12px;
            padding: 18px 20px;
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.7;
            margin: 24px 0;
            color: var(--text-mid);
        }
        .cms-article-body code {
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
            font-size: .92em;
        }
        .cms-article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            background: var(--bg-deep);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--line);
            font-size: 14px;
        }
        .cms-article-body th,
        .cms-article-body td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--line);
            text-align: left;
        }
        .cms-article-body th {
            background: var(--bg-elev);
            color: var(--text-hi);
            font-weight: 600;
        }
        .cms-article-body tr:last-child td {
            border-bottom: none;
        }

        /* ========== 标签区 ========== */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding: 30px 0 48px;
            margin-top: 36px;
            border-bottom: 1px solid var(--line);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: var(--glass-bg);
            border: 1px solid var(--line);
            color: var(--text-mid);
            font-size: 13px;
            transition: all .2s ease;
        }
        .tag:hover {
            border-color: var(--line-bright);
            color: var(--text-hi);
        }
        .tag-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--cyan);
            flex-shrink: 0;
        }

        /* ========== 相关推荐 ========== */
        .related-section {
            padding: 64px 0 72px;
        }
        .section-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 32px;
        }
        .section-mark {
            font-size: 13px;
            font-weight: 500;
            color: var(--cyan);
            letter-spacing: .08em;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(56, 189, 248, .08);
            border: 1px solid rgba(56, 189, 248, .2);
        }
        .section-header h2 {
            font-size: clamp(1.35rem, 2vw, 1.7rem);
            font-weight: 600;
            color: var(--text-hi);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            display: block;
            background: var(--glass-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all .3s ease;
        }
        .related-card:hover {
            transform: translateY(-4px);
            border-color: var(--line-bright);
            box-shadow: 0 12px 32px rgba(2, 6, 23, .45);
        }
        .related-card-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            background: linear-gradient(135deg, var(--bg-elev), var(--bg-deep));
        }
        .related-card-body {
            padding: 18px 20px 20px;
        }
        .related-card-body h3 {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.55;
            color: var(--text-hi);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 46px;
        }
        .related-card-body span {
            font-size: 12px;
            color: var(--text-low);
        }
        .back-link {
            text-align: center;
            margin-top: 40px;
        }
        .back-link a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-mid);
            font-size: 14px;
            transition: color .2s;
            border-bottom: 1px solid var(--line);
            padding-bottom: 2px;
        }
        .back-link a:hover {
            color: var(--cyan);
            border-color: var(--cyan);
        }

        /* ========== 尾部 CTA ========== */
        .article-cta {
            position: relative;
            padding: 80px 24px;
            text-align: center;
            background:
                radial-gradient(1.5px 1.5px at 30% 30%, rgba(255, 255, 255, .05) 50%, transparent 50%),
                radial-gradient(1px 1px at 70% 60%, rgba(56, 189, 248, .07) 50%, transparent 50%),
                linear-gradient(170deg, #0B1528, var(--bg-deep));
            border-top: 1px solid var(--line);
            overflow: hidden;
        }
        .article-cta::before {
            content: "";
            position: absolute;
            top: -60%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(56, 189, 248, .1), transparent 70%);
            pointer-events: none;
        }
        .article-cta h2 {
            position: relative;
            font-size: clamp(1.5rem, 3vw, 2.1rem);
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--text-hi);
        }
        .article-cta p {
            position: relative;
            font-size: 16px;
            color: var(--text-mid);
            margin-bottom: 30px;
        }
        .article-cta .btn-primary {
            position: relative;
            font-size: 15px;
            padding: 12px 34px;
        }

        /* ========== 空状态 ========== */
        .article-empty-state {
            min-height: 50vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 16px;
            padding: 140px 24px;
            text-align: center;
        }
        .empty-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--glass-bg);
            border: 1px solid var(--line);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold);
            margin-bottom: 4px;
        }
        .article-empty-state p {
            font-size: 17px;
            color: var(--text-mid);
        }
        .article-empty-state a {
            color: var(--cyan);
            font-size: 14px;
            font-weight: 500;
            border-bottom: 1px solid rgba(56, 189, 248, .3);
            padding-bottom: 2px;
            transition: all .2s;
        }
        .article-empty-state a:hover {
            color: var(--text-hi);
            border-color: var(--cyan);
        }

        /* ========== 表单弹层 ========== */
        .modal-overlay {
            position: fixed;
            inset: 0;
            z-index: 200;
            background: rgba(4, 7, 15, .72);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            opacity: 0;
            visibility: hidden;
            transition: all .3s ease;
        }
        .modal-overlay.open {
            opacity: 1;
            visibility: visible;
        }
        .modal-panel {
            position: relative;
            width: 100%;
            max-width: 480px;
            background: rgba(15, 26, 52, .86);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid var(--line);
            border-radius: 20px;
            padding: 36px 32px 28px;
            box-shadow: 0 24px 64px rgba(2, 6, 23, .5);
            transform: translateY(24px) scale(.98);
            transition: transform .35s ease;
        }
        .modal-overlay.open .modal-panel {
            transform: translateY(0) scale(1);
        }
        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            color: var(--text-low);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all .2s;
            border: 1px solid transparent;
            font-size: 18px;
            line-height: 1;
        }
        .modal-close:hover {
            color: var(--text-hi);
            border-color: var(--line);
            background: rgba(255, 255, 255, .04);
        }
        .modal-panel h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 8px;
        }
        .modal-panel .modal-sub {
            font-size: 14px;
            color: var(--text-low);
            margin-bottom: 24px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-mid);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 11px 14px;
            border-radius: var(--radius-btn);
            border: 1px solid var(--line);
            background: rgba(7, 13, 28, .6);
            color: var(--text-hi);
            font-size: 14px;
            outline: none;
            transition: all .25s ease;
            line-height: 1.5;
        }
        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: rgba(126, 143, 176, .6);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--cyan);
            box-shadow: 0 0 0 3px rgba(56, 189, 248, .12);
        }
        .btn-full {
            width: 100%;
            margin-top: 8px;
            padding: 12px 20px;
        }
        .privacy-note {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-top: 16px;
            font-size: 12px;
            color: var(--text-low);
            text-align: center;
        }
        .privacy-note svg {
            flex-shrink: 0;
        }
        .form-success {
            display: none;
            text-align: center;
            padding: 32px 0;
        }
        .form-success.show {
            display: block;
        }
        .form-success .success-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: rgba(56, 189, 248, .1);
            border: 1px solid rgba(56, 189, 248, .3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--cyan);
        }
        .form-success p {
            font-size: 15px;
            color: var(--text-mid);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-deep);
            position: relative;
        }
        .footer-star-line {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(56, 189, 248, .5), rgba(139, 92, 246, .5), transparent);
            opacity: .5;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding: 56px 24px 40px;
            max-width: 1152px;
            margin: 0 auto;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            margin-top: 14px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-low);
            max-width: 360px;
        }
        .footer-col h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 16px;
            letter-spacing: .02em;
        }
        .footer-col a {
            display: block;
            color: var(--text-low);
            font-size: 14px;
            line-height: 2.3;
            transition: color .2s;
        }
        .footer-col a:hover {
            color: var(--cyan);
        }
        .footer-col p {
            color: var(--text-low);
            font-size: 14px;
            line-height: 2;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding: 18px 0;
        }
        .footer-bottom-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-low);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom-links a {
            color: var(--text-low);
            margin-left: 20px;
            transition: color .2s;
            font-size: 13px;
        }
        .footer-bottom-links a:hover {
            color: var(--cyan);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }
            .menu-toggle {
                display: inline-flex;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 768px) {
            .container-site {
                padding: 0 18px;
            }
            .article-hero {
                padding: 48px 0 40px;
            }
            .article-main {
                padding: 40px 18px 0;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 44px 18px 32px;
            }
            .footer-bottom-inner {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .footer-bottom-links a {
                margin: 0 10px;
            }
            .header-actions .btn-primary {
                display: none;
            }
            .modal-panel {
                padding: 28px 20px 22px;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 14px;
            }
            .logo-text {
                font-size: 16px;
            }
            .article-title {
                font-size: 1.5rem;
            }
            .article-meta {
                gap: 8px 16px;
                font-size: 12px;
            }
            .related-card-img {
                height: 140px;
            }
            .section-header {
                flex-wrap: wrap;
            }
        }

/* roulang page: category2 */
:root {
    --bg-base: #070D1C;
    --bg-elev: #0D162B;
    --bg-deep: #04070F;
    --glass-bg: rgba(15, 26, 52, .55);
    --line: rgba(111, 147, 255, .2);
    --line-bright: rgba(111, 147, 255, .4);
    --primary: #3B82F6;
    --cyan: #38BDF8;
    --violet: #8B5CF6;
    --gold: #F5C97B;
    --text-hi: #F0F5FF;
    --text-mid: #B6C2DE;
    --text-low: #7E8FB0;
    --radius-card: 16px;
    --radius-btn: 10px;
    --radius-badge: 999px;
    --font-sans: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  }

  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: var(--font-sans);
    background-color: var(--bg-base);
    color: var(--text-mid);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
      radial-gradient(1px 1px at 12% 18%, rgba(240, 245, 255, .28) 0, transparent 100%),
      radial-gradient(1px 1px at 68% 8%, rgba(56, 189, 248, .25) 0, transparent 100%),
      radial-gradient(1px 1px at 82% 42%, rgba(139, 92, 246, .22) 0, transparent 100%),
      radial-gradient(1px 1px at 36% 76%, rgba(245, 201, 123, .16) 0, transparent 100%),
      radial-gradient(1px 1px at 92% 84%, rgba(255, 255, 255, .12) 0, transparent 100%),
      radial-gradient(1px 1px at 22% 52%, rgba(56, 189, 248, .18) 0, transparent 100%);
  }

  a {
    color: inherit;
    text-decoration: none;
  }

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

  button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
  }

  input,
  textarea {
    font-family: inherit;
    color: inherit;
  }

  input:focus,
  textarea:focus,
  button:focus,
  a:focus {
    outline: 2px solid rgba(56, 189, 248, .6);
    outline-offset: 2px;
  }

  .container-site {
    width: 100%;
    max-width: 1152px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
    position: relative;
    z-index: 2;
  }

  main {
    position: relative;
    z-index: 1;
  }

  /* Header */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 76px;
    background: rgba(7, 13, 28, .82);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    z-index: 100;
    transition: background .3s ease, box-shadow .3s ease;
  }

  .site-header:hover {
    box-shadow: 0 4px 30px rgba(2, 6, 23, .3);
  }

  .header-inner {
    height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

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

  .logo-star {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: rgba(56, 189, 248, .12);
    border: 1px solid rgba(56, 189, 248, .25);
    color: var(--cyan);
    box-shadow: 0 0 14px rgba(56, 189, 248, .2);
  }

  .logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-hi);
    letter-spacing: .01em;
    background: linear-gradient(135deg, #F0F5FF 0%, #B6C2DE 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .desktop-nav {
    display: none;
    align-items: center;
    gap: 30px;
  }

  .nav-link {
    position: relative;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: .02em;
    color: var(--text-mid);
    padding: 10px 2px;
    transition: color .25s ease;
  }

  .nav-link::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -2px;
    transform: translateX(-50%) scaleX(0);
    width: 32px;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--cyan), var(--violet));
    box-shadow: 0 0 8px rgba(56, 189, 248, .5);
    transition: transform .25s ease, opacity .25s ease;
    opacity: 0;
  }

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

  .nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
    opacity: .6;
  }

  .nav-link.active {
    color: #fff;
  }

  .nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
    opacity: 1;
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 14px;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    border: 1px solid var(--line);
    color: var(--text-hi);
    transition: background .2s ease, border-color .2s ease;
  }

  .menu-toggle:hover {
    background: rgba(255, 255, 255, .06);
    border-color: var(--line-bright);
  }

  /* Mobile drawer */
  .mobile-drawer {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: rgba(4, 7, 15, .97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    padding: 16px 0 24px;
    transform: translateY(-120%);
    transition: transform .3s ease;
    z-index: 99;
    display: block;
  }

  .mobile-drawer.open {
    transform: translateY(0);
  }

  .mobile-drawer .container-site {
    display: flex;
    flex-direction: column;
  }

  .mobile-drawer .nav-link {
    display: block;
    padding: 14px 0;
    font-size: 16px;
    color: var(--text-mid);
    border-bottom: 1px solid rgba(255, 255, 255, .06);
  }

  .mobile-drawer .nav-link:last-child {
    border-bottom: none;
  }

  .mobile-drawer .nav-link.active {
    color: #fff;
  }

  .mobile-drawer .nav-link::after {
    display: none;
  }

  /* Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-btn);
    padding: 12px 24px;
    transition: all .25s ease;
    white-space: nowrap;
  }

  .btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--cyan));
    color: #fff;
    box-shadow: 0 0 18px rgba(56, 189, 248, .28);
  }

  .btn-primary:hover {
    box-shadow: 0 0 28px rgba(56, 189, 248, .5);
    filter: brightness(1.1);
    transform: translateY(-1px);
  }

  .btn-primary:active {
    transform: scale(.985);
  }

  .btn-ghost {
    border: 1px solid rgba(111, 147, 255, .33);
    color: var(--text-hi);
    background: transparent;
  }

  .btn-ghost:hover {
    background: rgba(255, 255, 255, .06);
    border-color: var(--line-bright);
  }

  .btn-ghost:active {
    transform: scale(.985);
  }

  /* Banner */
  .page-banner {
    position: relative;
    padding: 160px 0 72px;
    background: linear-gradient(180deg, rgba(7, 13, 28, .35) 0%, rgba(7, 13, 28, .65) 60%, rgba(7, 13, 28, .92) 100%), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
    border-bottom: 1px solid rgba(111, 147, 255, .12);
  }

  .page-banner .breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-low);
    margin-bottom: 24px;
  }

  .page-banner .breadcrumb a {
    color: var(--text-low);
    transition: color .2s ease;
  }

  .page-banner .breadcrumb a:hover {
    color: var(--text-hi);
  }

  .page-banner .breadcrumb .sep {
    color: rgba(255, 255, 255, .2);
  }

  .page-banner .breadcrumb .current {
    color: var(--text-mid);
  }

  .page-banner-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--cyan);
    background: rgba(56, 189, 248, .1);
    border: 1px solid rgba(56, 189, 248, .25);
    border-radius: var(--radius-badge);
    padding: 6px 16px;
    margin-bottom: 20px;
    letter-spacing: .04em;
  }

  .banner-title {
    font-size: clamp(2rem, 4.2vw, 3rem);
    font-weight: 700;
    color: var(--text-hi);
    line-height: 1.2;
    max-width: 680px;
    margin-bottom: 18px;
  }

  .banner-subtitle {
    font-size: 17px;
    font-weight: 500;
    line-height: 1.7;
    color: var(--text-mid);
    max-width: 560px;
    margin-bottom: 32px;
  }

  /* Section base */
  .section {
    padding: 80px 0;
  }

  .section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .08em;
    color: var(--cyan);
    text-transform: uppercase;
    margin-bottom: 14px;
  }

  .section-title {
    font-size: clamp(1.5rem, 2.6vw, 2.1rem);
    font-weight: 600;
    color: var(--text-hi);
    line-height: 1.3;
    margin-bottom: 12px;
  }

  .section-subtitle {
    font-size: 15px;
    color: var(--text-mid);
    max-width: 640px;
    line-height: 1.7;
  }

  .section-head {
    margin-bottom: 48px;
  }

  /* Step flow */
  .step-flow-wrap {
    background: var(--bg-elev);
    border-top: 1px solid rgba(111, 147, 255, .08);
    border-bottom: 1px solid rgba(111, 147, 255, .08);
  }

  .step-flow {
    position: relative;
    max-width: 860px;
    margin: 0 auto;
  }

  .step-flow::before {
    content: '';
    position: absolute;
    left: 23px;
    top: 16px;
    bottom: 16px;
    width: 2px;
    background: linear-gradient(180deg, rgba(56, 189, 248, .65), rgba(139, 92, 246, .65));
    border-radius: 2px;
  }

  .step-node {
    position: relative;
    padding-left: 72px;
    padding-bottom: 40px;
  }

  .step-node:last-child {
    padding-bottom: 8px;
  }

  .step-dot {
    position: absolute;
    left: 8px;
    top: 2px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(56, 189, 248, .12);
    border: 1px solid rgba(56, 189, 248, .4);
    box-shadow: 0 0 14px rgba(56, 189, 248, .35);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    color: var(--gold);
  }

  .step-node:nth-child(2) .step-dot {
    border-color: rgba(139, 92, 246, .45);
    box-shadow: 0 0 14px rgba(139, 92, 246, .35);
  }

  .step-node:nth-child(3) .step-dot {
    border-color: rgba(56, 189, 248, .45);
    box-shadow: 0 0 14px rgba(56, 189, 248, .35);
  }

  .step-node:nth-child(4) .step-dot {
    border-color: rgba(245, 201, 123, .45);
    box-shadow: 0 0 14px rgba(245, 201, 123, .3);
  }

  .step-card {
    background: rgba(255, 255, 255, .03);
    border: 1px solid rgba(111, 147, 255, .16);
    border-radius: var(--radius-card);
    padding: 28px 32px;
    transition: border-color .3s ease, background .3s ease, transform .3s ease;
  }

  .step-card:hover {
    border-color: var(--line-bright);
    background: rgba(255, 255, 255, .05);
    transform: translateY(-2px);
  }

  .step-num {
    font-size: 13px;
    font-weight: 600;
    color: var(--cyan);
    letter-spacing: .06em;
    margin-bottom: 6px;
  }

  .step-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-hi);
    margin-bottom: 12px;
  }

  .step-card p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-mid);
  }

  /* Compare matrix */
  .compare-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-top: 40px;
  }

  .compare-col {
    border-radius: var(--radius-card);
    padding: 36px 32px;
    border: 1px solid rgba(111, 147, 255, .14);
    background: rgba(255, 255, 255, .03);
    backdrop-filter: blur(16px);
    transition: border-color .3s ease, background .3s ease;
  }

  .compare-col.highlight {
    border-color: rgba(56, 189, 248, .35);
    background: linear-gradient(145deg, rgba(56, 189, 248, .06), rgba(139, 92, 246, .05)), rgba(255, 255, 255, .03);
    box-shadow: 0 0 24px rgba(56, 189, 248, .08);
  }

  .compare-col h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-hi);
    margin-bottom: 8px;
  }

  .compare-col .tag {
    display: inline-flex;
    align-items: center;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: var(--radius-badge);
    background: rgba(255, 255, 255, .06);
    color: var(--text-low);
    margin-bottom: 24px;
  }

  .compare-col.highlight .tag {
    background: rgba(56, 189, 248, .12);
    color: var(--cyan);
  }

  .compare-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding-bottom: 18px;
    margin-bottom: 18px;
    border-bottom: 1px solid rgba(255, 255, 255, .05);
  }

  .compare-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
  }

  .compare-item .icon {
    flex: 0 0 20px;
    width: 20px;
    height: 20px;
    margin-top: 2px;
    color: var(--text-low);
  }

  .compare-col.highlight .compare-item .icon {
    color: var(--cyan);
  }

  .compare-item p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-mid);
  }

  .compare-item strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-hi);
    margin-bottom: 4px;
  }

  .capability-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-top: 48px;
  }

  .capability-badge {
    font-size: 13px;
    color: var(--text-mid);
    padding: 8px 18px;
    border-radius: var(--radius-badge);
    border: 1px solid rgba(111, 147, 255, .2);
    background: rgba(255, 255, 255, .03);
    transition: all .25s ease;
  }

  .capability-badge:hover {
    border-color: rgba(56, 189, 248, .4);
    color: var(--text-hi);
    box-shadow: 0 0 12px rgba(56, 189, 248, .15);
  }

  /* FAQ */
  .faq-wrap {
    background: var(--bg-elev);
    border-top: 1px solid rgba(111, 147, 255, .08);
    border-bottom: 1px solid rgba(111, 147, 255, .08);
  }

  .faq-list {
    max-width: 780px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .faq-item {
    border-radius: 14px;
    border: 1px solid rgba(111, 147, 255, .14);
    background: rgba(255, 255, 255, .03);
    backdrop-filter: blur(14px);
    overflow: hidden;
    transition: border-color .3s ease, background .3s ease;
  }

  .faq-item:hover {
    border-color: rgba(111, 147, 255, .3);
  }

  .faq-item.open {
    border-color: rgba(56, 189, 248, .3);
    background: rgba(255, 255, 255, .05);
  }

  .faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    padding: 22px 24px;
    text-align: left;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-hi);
    transition: color .2s ease;
  }

  .faq-q .faq-arrow {
    flex: 0 0 20px;
    width: 20px;
    height: 20px;
    color: var(--text-low);
    transition: transform .3s ease, color .3s ease;
  }

  .faq-item.open .faq-arrow {
    transform: rotate(180deg);
    color: var(--cyan);
  }

  .faq-a {
    display: none;
    padding: 0 24px 22px;
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-mid);
  }

  .faq-item.open .faq-a {
    display: block;
  }

  .faq-a::before {
    content: '';
    display: block;
    width: 2px;
    height: 28px;
    background: linear-gradient(180deg, var(--cyan), transparent);
    border-radius: 2px;
    margin-bottom: 12px;
  }

  /* CTA */
  .cta-section {
    position: relative;
    padding: 90px 0;
    background: linear-gradient(180deg, rgba(7, 13, 28, .62), rgba(4, 7, 15, .78)), url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
    text-align: center;
  }

  .cta-section h2 {
    font-size: clamp(1.6rem, 3vw, 2.1rem);
    font-weight: 700;
    color: var(--text-hi);
    line-height: 1.3;
    margin-bottom: 12px;
  }

  .cta-section p {
    font-size: 15px;
    color: var(--text-mid);
    margin-bottom: 32px;
  }

  .cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
  }

  /* Footer */
  .site-footer {
    background-color: var(--bg-deep);
    position: relative;
    z-index: 2;
  }

  .footer-star-line {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(56, 189, 248, .4), rgba(139, 92, 246, .4), transparent);
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-top: 64px;
    padding-bottom: 48px;
  }

  .footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-low);
    margin-top: 16px;
    max-width: 360px;
  }

  .footer-col h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-hi);
    margin-bottom: 16px;
  }

  .footer-col a {
    display: block;
    font-size: 14px;
    color: var(--text-low);
    padding: 6px 0;
    transition: color .2s ease;
  }

  .footer-col a:hover {
    color: var(--text-hi);
  }

  .footer-col p {
    font-size: 14px;
    color: var(--text-low);
    padding: 6px 0;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .06);
    padding: 20px 0;
  }

  .footer-bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--text-low);
  }

  .footer-bottom-links {
    display: flex;
    gap: 20px;
  }

  .footer-bottom-links a {
    color: var(--text-low);
    transition: color .2s ease;
  }

  .footer-bottom-links a:hover {
    color: var(--text-hi);
  }

  /* Modal */
  .modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(2, 6, 23, .72);
    backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s ease, visibility .3s ease;
  }

  .modal-overlay.open {
    opacity: 1;
    visibility: visible;
  }

  .modal-box {
    width: 100%;
    max-width: 460px;
    background: linear-gradient(145deg, rgba(15, 26, 52, .92), rgba(7, 13, 28, .96));
    border: 1px solid rgba(111, 147, 255, .22);
    border-radius: 18px;
    padding: 32px;
    position: relative;
    transform: translateY(16px);
    transition: transform .3s ease;
    box-shadow: 0 24px 60px rgba(2, 6, 23, .6);
  }

  .modal-overlay.open .modal-box {
    transform: translateY(0);
  }

  .modal-box h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-hi);
    margin-bottom: 8px;
  }

  .modal-box .modal-sub {
    font-size: 14px;
    color: var(--text-low);
    margin-bottom: 24px;
  }

  .modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    color: var(--text-low);
    transition: all .2s ease;
  }

  .modal-close:hover {
    background: rgba(255, 255, 255, .06);
    color: var(--text-hi);
  }

  .form-group {
    margin-bottom: 18px;
  }

  .form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-mid);
    margin-bottom: 8px;
  }

  .form-group input,
  .form-group textarea {
    width: 100%;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(111, 147, 255, .2);
    border-radius: 10px;
    padding: 12px 14px;
    font-size: 14px;
    color: var(--text-hi);
    transition: border-color .25s ease, background .25s ease;
  }

  .form-group input:focus,
  .form-group textarea:focus {
    border-color: rgba(56, 189, 248, .5);
    background: rgba(255, 255, 255, .07);
    outline: none;
  }

  .form-group textarea {
    resize: vertical;
    min-height: 88px;
  }

  .privacy-note {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 12px;
    color: var(--text-low);
    line-height: 1.6;
    margin-top: 16px;
    margin-bottom: 20px;
  }

  .privacy-note svg {
    flex: 0 0 14px;
    width: 14px;
    height: 14px;
    margin-top: 3px;
    color: var(--text-low);
  }

  .form-success {
    display: none;
    text-align: center;
    padding: 40px 0;
  }

  .form-success .icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    color: var(--cyan);
  }

  .form-success h4 {
    font-size: 18px;
    color: var(--text-hi);
    margin-bottom: 8px;
  }

  .form-success p {
    font-size: 14px;
    color: var(--text-mid);
  }

  .modal-box.success .form-body {
    display: none;
  }

  .modal-box.success .form-success {
    display: block;
  }

  /* Responsive */
  @media (min-width: 1024px) {
    .desktop-nav {
      display: flex;
    }
    .menu-toggle {
      display: none;
    }
  }

  @media (max-width: 1023px) {
    .desktop-nav {
      display: none;
    }
    .cta-section {
      padding: 72px 0;
    }
  }

  @media (max-width: 768px) {
    .section {
      padding: 48px 0;
    }
    .page-banner {
      padding: 130px 0 52px;
    }
    .compare-grid {
      grid-template-columns: 1fr;
      gap: 20px;
    }
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 36px;
      padding-top: 48px;
      padding-bottom: 32px;
    }
    .step-node {
      padding-left: 60px;
    }
    .step-flow::before {
      left: 19px;
    }
    .step-dot {
      left: 4px;
      width: 30px;
      height: 30px;
    }
    .modal-box {
      padding: 26px 22px;
    }
  }

  @media (max-width: 640px) {
    .container-site {
      padding-left: 16px;
      padding-right: 16px;
    }
    .header-inner {
      gap: 12px;
    }
    .logo-text {
      font-size: 16px;
    }
    .page-banner .breadcrumb {
      font-size: 12px;
    }
    .step-card {
      padding: 22px 20px;
    }
    .step-card h3 {
      font-size: 16px;
    }
    .compare-col {
      padding: 26px 20px;
    }
    .footer-bottom-inner {
      flex-direction: column;
      text-align: center;
    }
  }