/* roulang page: index */
:root {
    --primary: #0E1A2B;
    --secondary: #1E3A5F;
    --bg: #0B1220;
    --accent: #38E1C6;
    --text-main: #E7EDF4;
    --text-sub: #94A3B8;
    --text-weak: #475569;
    --glass-bg: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.08);
    --radius-card: 16px;
    --radius-btn: 999px;
    --radius-input: 12px;
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
    --section-gap: 96px;
    --section-gap-mobile: 64px;
  }
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    font-size: 1rem;
    line-height: 1.75;
    background: var(--bg);
    color: var(--text-main);
    -webkit-font-smoothing: antialiased;
    position: relative;
  }
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
    z-index: 0;
  }
  a {
    color: inherit;
    text-decoration: none;
  }
  img {
    max-width: 100%;
    display: block;
  }
  button, input {
    font-family: inherit;
    font-size: inherit;
  }
  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
  }
  @media (max-width: 768px) {
    .container {
      padding: 0 16px;
    }
  }
  ::selection {
    background: rgba(56, 225, 198, 0.3);
    color: #fff;
  }
  :focus-visible {
    outline: 2px solid #38E1C6;
    outline-offset: 2px;
  }

  /* ===== Header / Nav ===== */
  .site-header {
    background: rgba(11, 18, 32, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    position: sticky;
    top: 0;
    z-index: 50;
  }
  .nav-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 0;
  }
  .logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.5px;
    white-space: nowrap;
  }
  .logo span {
    color: #38E1C6;
  }
  .nav-search {
    flex: 1;
    max-width: 480px;
    margin: 0 auto;
    position: relative;
  }
  .nav-search svg {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #94A3B8;
    pointer-events: none;
  }
  .nav-search input {
    width: 100%;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    padding: 10px 16px 10px 44px;
    color: #E7EDF4;
    font-size: 0.9rem;
    transition: all 0.3s ease;
  }
  .nav-search input::placeholder {
    color: #64748B;
  }
  .nav-search input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(56, 225, 198, 0.5);
    box-shadow: 0 0 16px rgba(56, 225, 198, 0.2);
  }
  .nav-bottom {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 0 12px;
    flex-wrap: wrap;
  }
  .nav-bottom a {
    padding: 6px 18px;
    border-radius: 999px;
    font-size: 0.9rem;
    color: #94A3B8;
    transition: all 0.3s ease;
    border: 1px solid transparent;
  }
  .nav-bottom a:hover {
    color: #38E1C6;
    background: rgba(56, 225, 198, 0.08);
    border-color: rgba(56, 225, 198, 0.3);
  }
  .nav-bottom a.active {
    color: #fff;
    background: rgba(56, 225, 198, 0.12);
    border-color: rgba(56, 225, 198, 0.4);
    font-weight: 500;
  }
  .menu-btn {
    display: none;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    padding: 8px 12px;
    color: #E7EDF4;
    cursor: pointer;
    transition: all 0.3s ease;
  }
  .menu-btn:hover {
    background: rgba(255, 255, 255, 0.14);
  }
  .mobile-menu {
    display: none;
    padding: 12px 0 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }
  .mobile-menu a {
    display: block;
    padding: 10px 16px;
    border-radius: 10px;
    color: #94A3B8;
    font-size: 0.95rem;
    transition: all 0.3s ease;
  }
  .mobile-menu a:hover {
    color: #38E1C6;
    background: rgba(56, 225, 198, 0.06);
  }
  .mobile-menu a.active {
    color: #fff;
    background: rgba(56, 225, 198, 0.1);
  }
  @media (max-width: 768px) {
    .nav-search {
      order: 3;
      max-width: 100%;
      flex-basis: 100%;
      margin-top: 4px;
    }
    .nav-bottom {
      display: none;
    }
    .menu-btn {
      display: inline-flex;
      align-items: center;
    }
    .mobile-menu:not(.hidden) {
      display: block;
    }
  }

  /* ===== Hero ===== */
  .hero {
    position: relative;
    min-height: 520px;
    display: flex;
    align-items: center;
    background-image: url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
    overflow: hidden;
  }
  .hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(11, 18, 32, 0.95) 0%, rgba(11, 18, 32, 0.75) 50%, rgba(11, 18, 32, 0.4) 100%);
  }
  .hero-inner {
    position: relative;
    z-index: 2;
    padding-top: 80px;
    padding-bottom: 80px;
  }
  .hero h1 {
    font-size: 3rem;
    line-height: 1.2;
    font-weight: 700;
    color: #fff;
    max-width: 640px;
    margin-bottom: 20px;
  }
  .hero-sub {
    font-size: 1.1rem;
    color: #94A3B8;
    max-width: 520px;
    margin-bottom: 32px;
    line-height: 1.7;
  }
  @media (max-width: 768px) {
    .hero h1 {
      font-size: 2.25rem;
    }
    .hero-sub {
      font-size: 1rem;
    }
  }
  .btn-main {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #38E1C6, #22C7AD);
    color: #0E1A2B;
    font-weight: 600;
    padding: 12px 28px;
    border-radius: 999px;
    font-size: 0.95rem;
    box-shadow: 0 4px 20px rgba(56, 225, 198, 0.35);
    transition: all 0.3s ease;
    border: 1px solid transparent;
  }
  .btn-main:hover {
    background: #38E1C6;
    box-shadow: 0 0 24px rgba(56, 225, 198, 0.4);
    transform: translateY(-2px);
    color: #0E1A2B;
  }
  .btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #E7EDF4;
    font-weight: 500;
    padding: 12px 28px;
    border-radius: 999px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
  }
  .btn-ghost:hover {
    border-color: #38E1C6;
    background: rgba(56, 225, 198, 0.08);
    color: #fff;
    transform: translateY(-2px);
  }
  .hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
  }
  .hero-stat .num {
    font-size: 1.75rem;
    font-weight: 700;
    color: #38E1C6;
  }
  .hero-stat .label {
    font-size: 0.85rem;
    color: #94A3B8;
    margin-top: 2px;
  }
  @media (max-width: 768px) {
    .hero-stats {
      gap: 24px;
    }
    .hero-stat .num {
      font-size: 1.4rem;
    }
  }

  /* ===== Section spacing ===== */
  .section {
    padding: 96px 0;
  }
  .section-alt {
    background: rgba(255, 255, 255, 0.02);
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  }
  @media (max-width: 768px) {
    .section {
      padding: 64px 0;
    }
  }
  .section-title {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 12px;
  }
  .section-sub {
    color: #94A3B8;
    font-size: 1rem;
    max-width: 640px;
    margin-bottom: 48px;
  }
  @media (max-width: 768px) {
    .section-title {
      font-size: 1.5rem;
    }
    .section-sub {
      margin-bottom: 32px;
    }
  }

  /* ===== Brand statement ===== */
  .brand-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
  }
  @media (max-width: 768px) {
    .brand-grid {
      grid-template-columns: 1fr;
      gap: 32px;
    }
  }
  .feature-points {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 32px;
  }
  @media (max-width: 520px) {
    .feature-points {
      grid-template-columns: 1fr;
    }
  }
  .feature-point {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 20px;
    transition: all 0.3s ease;
  }
  .feature-point:hover {
    border-color: rgba(56, 225, 198, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  }
  .feature-point .icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(56, 225, 198, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
  }
  .feature-point h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #E7EDF4;
    margin-bottom: 6px;
  }
  .feature-point p {
    font-size: 0.85rem;
    color: #94A3B8;
    line-height: 1.6;
  }
  .brand-img {
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  }
  .brand-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 360px;
  }
  .brand-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(11, 18, 32, 0.4));
    pointer-events: none;
  }

  /* ===== Featured cards ===== */
  .featured-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
  }
  @media (max-width: 768px) {
    .featured-grid {
      grid-template-columns: 1fr;
    }
  }
  .featured-main {
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    min-height: 420px;
    display: flex;
    align-items: flex-end;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    transition: all 0.3s ease;
  }
  .featured-main:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(56, 225, 198, 0.3);
  }
  .featured-main img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .featured-main .content {
    position: relative;
    z-index: 2;
    padding: 32px;
    background: linear-gradient(180deg, transparent, rgba(11, 18, 32, 0.9));
    width: 100%;
  }
  .featured-main .content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
  }
  .featured-main .content p {
    color: #94A3B8;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 16px;
  }
  .featured-side {
    display: grid;
    grid-template-rows: 1fr 1fr;
    gap: 24px;
  }
  .featured-side-card {
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    min-height: 200px;
    display: flex;
    align-items: flex-end;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    transition: all 0.3s ease;
  }
  .featured-side-card:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(56, 225, 198, 0.3);
  }
  .featured-side-card img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .featured-side-card .content {
    position: relative;
    z-index: 2;
    padding: 20px;
    background: linear-gradient(180deg, transparent, rgba(11, 18, 32, 0.92));
    width: 100%;
  }
  .featured-side-card .content h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 4px;
  }
  .featured-side-card .content p {
    font-size: 0.82rem;
    color: #94A3B8;
    line-height: 1.5;
  }
  @media (max-width: 768px) {
    .featured-main {
      min-height: 320px;
    }
    .featured-side {
      grid-template-rows: 1fr 1fr;
    }
  }
  .link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #38E1C6;
    font-size: 0.9rem;
    font-weight: 500;
    transition: gap 0.3s ease;
  }
  .link-arrow:hover {
    gap: 10px;
    color: #fff;
  }

  /* ===== CMS list ===== */
  .cms-list {
    display: grid;
    gap: 16px;
  }
  .cms-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 20px 24px;
    transition: all 0.3s ease;
  }
  .cms-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(56, 225, 198, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    transform: translateY(-2px);
  }
  .cms-card .badge {
    flex-shrink: 0;
    background: rgba(56, 225, 198, 0.12);
    color: #38E1C6;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: 999px;
    border: 1px solid rgba(56, 225, 198, 0.2);
  }
  .cms-card .body {
    flex: 1;
    min-width: 0;
  }
  .cms-card .body h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #E7EDF4;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .cms-card .body p {
    font-size: 0.85rem;
    color: #94A3B8;
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
  }
  .cms-card .meta {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #64748B;
    font-size: 0.8rem;
    white-space: nowrap;
  }
  @media (max-width: 768px) {
    .cms-card {
      flex-direction: column;
      align-items: flex-start;
      padding: 16px 18px;
    }
    .cms-card .meta {
      align-self: flex-end;
    }
    .cms-card .body h3 {
      white-space: normal;
    }
  }
  .empty-state {
    border: 2px dashed rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    padding: 48px 24px;
    text-align: center;
    color: #94A3B8;
  }
  .empty-state svg {
    margin: 0 auto 12px;
    opacity: 0.4;
  }

  /* ===== Trust ===== */
  .trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  @media (max-width: 768px) {
    .trust-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  .trust-num {
    text-align: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 32px 16px;
    transition: all 0.3s ease;
  }
  .trust-num:hover {
    border-color: rgba(56, 225, 198, 0.3);
  }
  .trust-num .val {
    font-size: 2.25rem;
    font-weight: 700;
    color: #38E1C6;
    line-height: 1.2;
  }
  .trust-num .lbl {
    font-size: 0.9rem;
    color: #94A3B8;
    margin-top: 8px;
  }
  .quote-wall {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
  }
  @media (max-width: 768px) {
    .quote-wall {
      grid-template-columns: 1fr;
      margin-top: 32px;
    }
  }
  .quote-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 24px;
    position: relative;
  }
  .quote-item::before {
    content: '"';
    position: absolute;
    top: 8px;
    left: 16px;
    font-size: 3rem;
    color: rgba(56, 225, 198, 0.25);
    font-family: Georgia, serif;
    line-height: 1;
  }
  .quote-item p {
    font-size: 0.9rem;
    color: #94A3B8;
    line-height: 1.7;
    padding-top: 16px;
  }
  .quote-item .author {
    font-size: 0.8rem;
    color: #64748B;
    margin-top: 12px;
  }

  /* ===== FAQ ===== */
  .faq-list {
    max-width: 800px;
    margin: 0 auto;
  }
  .faq-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    margin-bottom: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
  }
  .faq-item:hover {
    border-color: rgba(56, 225, 198, 0.2);
  }
  .faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    background: transparent;
    border: none;
    color: #E7EDF4;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: all 0.3s ease;
  }
  .faq-q:hover {
    color: #38E1C6;
  }
  .faq-q .faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(56, 225, 198, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #38E1C6;
    transition: transform 0.3s ease;
    font-size: 0.85rem;
    font-weight: 600;
  }
  .faq-item.open .faq-icon {
    transform: rotate(45deg);
  }
  .faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 24px;
    color: #94A3B8;
    font-size: 0.9rem;
    line-height: 1.7;
  }
  .faq-item.open .faq-a {
    max-height: 300px;
    padding: 0 24px 24px;
  }

  /* ===== CTA / Subscribe ===== */
  .cta-section {
    position: relative;
    background-image: url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
    overflow: hidden;
  }
  .cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(14, 26, 43, 0.95), rgba(11, 18, 32, 0.92));
  }
  .cta-inner {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 620px;
    margin: 0 auto;
  }
  .subscribe-form {
    display: flex;
    gap: 12px;
    max-width: 480px;
    margin: 32px auto 0;
    flex-wrap: wrap;
    justify-content: center;
  }
  .subscribe-form input {
    flex: 1;
    min-width: 240px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    padding: 12px 18px;
    color: #E7EDF4;
    font-size: 0.9rem;
    transition: all 0.3s ease;
  }
  .subscribe-form input::placeholder {
    color: #64748B;
  }
  .subscribe-form input:focus {
    outline: none;
    border-color: rgba(56, 225, 198, 0.5);
    box-shadow: 0 0 16px rgba(56, 225, 198, 0.2);
    background: rgba(255, 255, 255, 0.12);
  }

  /* ===== Footer ===== */
  .site-footer {
    background: #070C14;
    border-top: 1px solid rgba(56, 225, 198, 0.15);
    padding: 64px 0 32px;
    position: relative;
    z-index: 1;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
  }
  @media (max-width: 768px) {
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 32px;
    }
  }
  .footer-brand .logo {
    font-size: 1.1rem;
    margin-bottom: 12px;
    display: block;
  }
  .footer-brand p {
    font-size: 0.85rem;
    color: #64748B;
    line-height: 1.7;
    max-width: 320px;
  }
  .footer-col h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: #E7EDF4;
    margin-bottom: 16px;
  }
  .footer-col a {
    display: block;
    padding: 6px 0;
    font-size: 0.85rem;
    color: #94A3B8;
    transition: all 0.3s ease;
  }
  .footer-col a:hover {
    color: #38E1C6;
  }
  .footer-bottom {
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    text-align: center;
    font-size: 0.8rem;
    color: #475569;
    line-height: 1.6;
  }

/* roulang page: category1 */
:root {
      --primary: #0E1A2B;
      --secondary: #1E3A5F;
      --bg: #0B1220;
      --bg-deep: #070C14;
      --accent: #38E1C6;
      --text: #E7EDF4;
      --text-dim: #94A3B8;
      --text-mute: #475569;
      --glass-bg: rgba(255, 255, 255, 0.04);
      --glass-border: rgba(255, 255, 255, 0.08);
      --radius-card: 16px;
      --radius-btn: 999px;
      --radius-input: 12px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
      --shadow-glow: 0 0 24px rgba(56, 225, 198, 0.4);
      --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-stack);
      background-color: var(--bg);
      background-image: radial-gradient(circle at 20% 20%, rgba(30, 58, 95, 0.18) 0%, transparent 45%),
        radial-gradient(circle at 80% 60%, rgba(56, 225, 198, 0.05) 0%, transparent 35%);
      color: var(--text);
      line-height: 1.75;
      font-size: 1rem;
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    }

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

    button,
    input {
      font-family: inherit;
      border: none;
      outline: none;
    }

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

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ============ HEADER ============ */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(14, 26, 43, 0.92);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .nav-top {
      display: flex;
      align-items: center;
      gap: 24px;
      padding: 14px 0 10px;
    }

    .logo {
      font-size: 1.5rem;
      font-weight: 700;
      color: #fff;
      white-space: nowrap;
      letter-spacing: 0.5px;
    }

    .logo:hover {
      color: #fff;
    }

    .search-box {
      flex: 1 1 auto;
      max-width: 560px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      gap: 10px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.10);
      border-radius: var(--radius-btn);
      padding: 8px 18px;
      transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
    }

    .search-box:focus-within {
      background: rgba(255, 255, 255, 0.12);
      border-color: rgba(56, 225, 198, 0.6);
      box-shadow: 0 0 0 3px rgba(56, 225, 198, 0.15);
    }

    .search-box svg {
      flex-shrink: 0;
      width: 18px;
      height: 18px;
      stroke: var(--text-dim);
    }

    .search-box input {
      background: transparent;
      border: none;
      color: var(--text);
      width: 100%;
      font-size: 0.95rem;
    }

    .search-box input::placeholder {
      color: var(--text-mute);
    }

    .menu-toggle {
      display: none;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 8px;
      padding: 8px 10px;
      cursor: pointer;
      color: var(--text);
      font-size: 1.1rem;
    }

    .nav-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      background: rgba(11, 18, 32, 0.6);
    }

    .nav-bottom .container {
      display: flex;
      align-items: center;
      gap: 6px;
      flex-wrap: nowrap;
      overflow-x: auto;
      padding: 0 24px;
      scrollbar-width: none;
    }

    .nav-bottom .container::-webkit-scrollbar {
      display: none;
    }

    .nav-bottom a {
      display: inline-block;
      padding: 10px 14px;
      font-size: 0.95rem;
      color: var(--text-dim);
      border-radius: var(--radius-btn);
      white-space: nowrap;
      border-bottom: 2px solid transparent;
    }

    .nav-bottom a:hover {
      color: var(--accent);
      background: rgba(56, 225, 198, 0.06);
    }

    .nav-bottom a.active {
      color: var(--accent);
      border-bottom-color: var(--accent);
      font-weight: 600;
    }

    /* ============ BREADCRUMB ============ */
    .breadcrumb {
      padding: 18px 0 0;
      font-size: 0.875rem;
      color: var(--text-mute);
    }

    .breadcrumb a {
      color: var(--text-dim);
    }

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

    .breadcrumb .sep {
      margin: 0 8px;
      color: var(--text-mute);
    }

    /* ============ PAGE HERO ============ */
    .page-hero {
      position: relative;
      padding: 64px 0 56px;
      overflow: hidden;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }

    .page-hero-bg {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.22;
      z-index: 0;
    }

    .page-hero-bg::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(120deg, rgba(11, 18, 32, 0.96) 0%, rgba(11, 18, 32, 0.78) 55%, rgba(30, 58, 95, 0.4) 100%);
    }

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

    .page-hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 56px;
      align-items: center;
    }

    .page-hero h1 {
      font-size: 3rem;
      line-height: 1.2;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .page-hero .hero-desc {
      font-size: 1.05rem;
      color: var(--text-dim);
      max-width: 560px;
      margin-bottom: 28px;
      line-height: 1.8;
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .hero-tags span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 14px;
      border-radius: var(--radius-btn);
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      color: var(--text-dim);
      font-size: 0.85rem;
      transition: border-color 0.2s ease, color 0.2s ease;
    }

    .hero-tags span:hover {
      border-color: rgba(56, 225, 198, 0.35);
      color: var(--accent);
    }

    .hero-tags span i {
      color: var(--accent);
      font-size: 0.75rem;
    }

    .hero-illustration {
      position: relative;
      border-radius: 24px;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
    }

    .hero-illustration img {
      width: 100%;
      height: 280px;
      object-fit: cover;
    }

    .hero-illustration-caption {
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 16px;
      padding: 14px 18px;
      background: rgba(11, 18, 32, 0.78);
      backdrop-filter: blur(8px);
      border-radius: 12px;
      border: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 0.875rem;
      color: var(--text);
    }

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

    .section-alt {
      background: rgba(255, 255, 255, 0.016);
      border-top: 1px solid rgba(255, 255, 255, 0.03);
      border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    }

    .section-head {
      margin-bottom: 40px;
      max-width: 720px;
    }

    .section-head h2 {
      font-size: 2rem;
      font-weight: 700;
      color: var(--text);
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .section-head p {
      color: var(--text-dim);
      font-size: 1rem;
    }

    .info-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .info-card {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-card);
      padding: 12px 12px 28px;
      box-shadow: var(--shadow-card);
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
      display: flex;
      flex-direction: column;
    }

    .info-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 44px rgba(0, 0, 0, 0.45);
      border-color: rgba(56, 225, 198, 0.3);
    }

    .info-card .card-img {
      border-radius: 12px;
      overflow: hidden;
      margin-bottom: 20px;
    }

    .info-card .card-img img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .info-card:hover .card-img img {
      transform: scale(1.03);
    }

    .info-card h3 {
      font-size: 1.25rem;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .info-card p {
      color: var(--text-dim);
      font-size: 0.925rem;
      line-height: 1.7;
      flex: 1;
      margin-bottom: 18px;
    }

    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--accent);
      font-size: 0.875rem;
      font-weight: 500;
      padding: 6px 0;
    }

    .card-link i {
      transition: transform 0.2s ease;
    }

    .card-link:hover i {
      transform: translateX(4px);
    }

    /* ============ FLOW ============ */
    .flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      counter-reset: flow;
    }

    .flow-item {
      position: relative;
      padding: 28px 20px;
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-card);
      transition: border-color 0.25s ease, box-shadow 0.25s ease;
    }

    .flow-item:hover {
      border-color: rgba(56, 225, 198, 0.3);
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
    }

    .flow-num {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent);
      letter-spacing: 1px;
      margin-bottom: 8px;
      text-transform: uppercase;
    }

    .flow-item h3 {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 8px;
    }

    .flow-item p {
      font-size: 0.875rem;
      color: var(--text-dim);
      line-height: 1.7;
    }

    /* ============ SECURITY STRIP ============ */
    .security-strip {
      background: rgba(14, 26, 43, 0.55);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: 20px;
      padding: 36px 32px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .security-item {
      display: flex;
      gap: 12px;
      align-items: flex-start;
    }

    .security-item .icon {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: rgba(56, 225, 198, 0.1);
      border: 1px solid rgba(56, 225, 198, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-size: 1rem;
      flex-shrink: 0;
    }

    .security-item h4 {
      font-size: 0.95rem;
      color: var(--text);
      font-weight: 600;
      margin-bottom: 4px;
    }

    .security-item p {
      font-size: 0.82rem;
      color: var(--text-dim);
      line-height: 1.6;
    }

    /* ============ FAQ ============ */
    .faq-wrap {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 14px;
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color 0.25s ease;
    }

    .faq-item:hover {
      border-color: rgba(56, 225, 198, 0.2);
    }

    .faq-item.open {
      border-color: rgba(56, 225, 198, 0.35);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 22px;
      background: transparent;
      color: var(--text);
      font-size: 0.975rem;
      font-weight: 500;
      cursor: pointer;
      text-align: left;
    }

    .faq-question .icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: rgba(56, 225, 198, 0.1);
      border: 1px solid rgba(56, 225, 198, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      color: var(--accent);
      font-size: 0.8rem;
      transition: transform 0.3s ease, background 0.3s ease;
    }

    .faq-item.open .faq-question .icon {
      transform: rotate(45deg);
      background: rgba(56, 225, 198, 0.2);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      padding: 0 22px;
    }

    .faq-item.open .faq-answer {
      max-height: 400px;
      padding: 0 22px 20px;
    }

    .faq-answer p {
      font-size: 0.905rem;
      color: var(--text-dim);
      line-height: 1.75;
    }

    /* ============ CTA ============ */
    .cta-section {
      padding: 72px 0;
      position: relative;
      overflow: hidden;
    }

    .cta-bg {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.18;
      z-index: 0;
    }

    .cta-bg::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(11, 18, 32, 0.96), rgba(30, 58, 95, 0.72));
    }

    .cta-inner {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 640px;
      margin: 0 auto;
    }

    .cta-inner h2 {
      font-size: 2rem;
      color: var(--text);
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .cta-inner p {
      color: var(--text-dim);
      font-size: 1rem;
      margin-bottom: 32px;
    }

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

    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 30px;
      border-radius: var(--radius-btn);
      background: linear-gradient(135deg, #38E1C6, #2BBFA8);
      color: #0E1A2B;
      font-weight: 600;
      font-size: 0.95rem;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 20px rgba(56, 225, 198, 0.25);
      transition: box-shadow 0.25s ease, transform 0.25s ease, background 0.25s ease;
    }

    .btn-primary:hover {
      background: #38E1C6;
      box-shadow: var(--shadow-glow);
      transform: translateY(-2px);
      color: #0E1A2B;
    }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 30px;
      border-radius: var(--radius-btn);
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.18);
      color: var(--text);
      font-weight: 500;
      font-size: 0.95rem;
      cursor: pointer;
      transition: border-color 0.25s ease, color 0.25s ease, background 0.25s ease, transform 0.25s ease;
    }

    .btn-secondary:hover {
      border-color: var(--accent);
      color: #fff;
      background: rgba(56, 225, 198, 0.08);
      transform: translateY(-2px);
    }

    /* ============ FOOTER ============ */
    .site-footer {
      background: var(--bg-deep);
      border-top: 1px solid rgba(56, 225, 198, 0.15);
      padding: 56px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 40px;
    }

    .footer-brand .logo {
      font-size: 1.3rem;
      margin-bottom: 12px;
      display: inline-block;
    }

    .footer-brand p {
      color: var(--text-dim);
      font-size: 0.875rem;
      max-width: 320px;
      line-height: 1.7;
    }

    .footer-col h4 {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text);
      margin-bottom: 16px;
    }

    .footer-col a {
      display: block;
      color: var(--text-dim);
      font-size: 0.875rem;
      padding: 5px 0;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
      font-size: 0.8rem;
      color: var(--text-mute);
    }

    /* ============ RESPONSIVE ============ */
    @media (max-width: 1024px) {
      .page-hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }

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

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

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

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

    @media (max-width: 768px) {
      .nav-top {
        flex-wrap: wrap;
        gap: 10px;
      }

      .search-box {
        order: 3;
        max-width: 100%;
        flex: 0 0 100%;
      }

      .menu-toggle {
        display: inline-flex;
      }

      .nav-bottom .container {
        padding: 0 16px;
      }

      .page-hero h1 {
        font-size: 2.25rem;
      }

      .page-hero .container {
        padding: 0 20px;
      }

      .breadcrumb {
        padding-left: 20px;
        padding-right: 20px;
      }

      .section {
        padding: 56px 0;
      }

      .section-head h2 {
        font-size: 1.5rem;
      }

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

      .flow-grid {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
      }

      .flow-item {
        padding: 20px 16px;
      }

      .security-strip {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 28px 20px;
      }

      .cta-inner h2 {
        font-size: 1.5rem;
      }

      .cta-btns {
        flex-direction: column;
        align-items: center;
      }

      .btn-primary,
      .btn-secondary {
        width: 100%;
        max-width: 320px;
        justify-content: center;
      }

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

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

      .container {
        padding: 0 20px;
      }
    }

    @media (max-width: 520px) {
      .flow-grid {
        grid-template-columns: 1fr;
      }

      .page-hero {
        padding: 40px 0;
      }

      .hero-illustration img {
        height: 200px;
      }
    }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --navy: #0E1A2B;
  --navy-light: #1E3A5F;
  --bg: #0B1220;
  --accent: #38E1C6;
  --text-main: #E7EDF4;
  --text-sub: #94A3B8;
  --text-weak: #475569;
  --glass-bg: rgba(255,255,255,0.04);
  --glass-border: rgba(255,255,255,0.08);
  --radius-card: 16px;
  --radius-btn: 999px;
  --radius-input: 12px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--bg);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }

/* ===== 容器 ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
  background: rgba(11,18,32,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-top {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 0;
}
.logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
  color: var(--text-main);
  line-height: 1.2;
}
.logo span {
  color: var(--accent);
}
.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.08);
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 10px 18px;
  flex: 1;
  max-width: 460px;
  transition: all 0.3s ease;
}
.search-box:focus-within {
  background: rgba(255,255,255,0.12);
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(56,225,198,0.15);
}
.search-box input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 0.875rem;
  width: 100%;
}
.search-box input::placeholder {
  color: var(--text-sub);
}
.search-box svg {
  flex-shrink: 0;
  color: var(--text-sub);
}
.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 8px 10px;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.3s ease;
}
.menu-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.nav-bottom {
  display: flex;
  gap: 32px;
  padding-bottom: 14px;
  flex-wrap: wrap;
}
.nav-bottom a {
  color: var(--text-sub);
  font-size: 0.925rem;
  transition: color 0.3s ease;
  position: relative;
  padding: 4px 0;
}
.nav-bottom a:hover {
  color: var(--accent);
}
.nav-bottom a.active {
  color: var(--text-main);
  font-weight: 600;
}
.nav-bottom a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

/* ===== 面包屑 ===== */
.breadcrumb-wrap {
  background: rgba(255,255,255,0.02);
  border-bottom: 1px solid var(--glass-border);
  padding: 12px 0;
  font-size: 0.875rem;
  color: var(--text-sub);
}
.breadcrumb-wrap a {
  color: var(--text-sub);
  transition: color 0.3s;
}
.breadcrumb-wrap a:hover {
  color: var(--accent);
}
.breadcrumb-wrap .current {
  color: var(--text-main);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.breadcrumb-wrap .sep {
  margin: 0 8px;
  color: var(--text-weak);
}

/* ===== 文章主体 ===== */
.article-main {
  padding: 48px 0 80px;
}
.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
@media (min-width: 1024px) {
  .article-layout {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: 48px;
  }
}
.article-content-col {
  min-width: 0;
}
.article-title {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
@media (max-width: 768px) {
  .article-title {
    font-size: 1.75rem;
  }
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.badge {
  display: inline-flex;
  align-items: center;
  background: rgba(56,225,198,0.12);
  color: var(--accent);
  border: 1px solid rgba(56,225,198,0.25);
  border-radius: 999px;
  padding: 4px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.meta-date {
  color: var(--text-sub);
  font-size: 0.875rem;
}

/* ===== 正文排版 ===== */
.article-prose {
  color: rgba(231,237,244,0.92);
  font-size: 1rem;
  line-height: 1.75;
}
.article-prose > * + * {
  margin-top: 24px;
}
.article-prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 40px;
  margin-bottom: 0;
  line-height: 1.3;
}
.article-prose h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main);
  margin-top: 32px;
  margin-bottom: 0;
}
.article-prose h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  margin-top: 24px;
}
.article-prose p {
  line-height: 1.75;
}
.article-prose a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity 0.3s;
}
.article-prose a:hover {
  opacity: 0.8;
}
.article-prose ul,
.article-prose ol {
  padding-left: 24px;
}
.article-prose ul {
  list-style: disc;
}
.article-prose ol {
  list-style: decimal;
}
.article-prose li {
  margin-bottom: 8px;
  line-height: 1.7;
}
.article-prose blockquote {
  border-left: 3px solid var(--accent);
  background: rgba(255,255,255,0.03);
  padding: 16px 24px;
  border-radius: 0 12px 12px 0;
  color: var(--text-sub);
}
.article-prose blockquote p:last-child {
  margin-bottom: 0;
}
.article-prose img {
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}
.article-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}
.article-prose th,
.article-prose td {
  border: 1px solid rgba(255,255,255,0.1);
  padding: 12px 16px;
  text-align: left;
}
.article-prose th {
  background: rgba(255,255,255,0.05);
  font-weight: 600;
  color: var(--text-main);
}
.article-prose code {
  background: rgba(255,255,255,0.08);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 0.875em;
  font-family: "SF Mono", "Fira Code", monospace;
}

/* ===== 未找到 ===== */
.not-found {
  background: var(--glass-bg);
  border: 1px dashed rgba(56,225,198,0.3);
  border-radius: var(--radius-card);
  padding: 64px 32px;
  text-align: center;
}
.not-found h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.not-found p {
  color: var(--text-sub);
  margin-bottom: 24px;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #38E1C6, #2CC4AC);
  color: #0B1220;
  font-weight: 600;
  font-size: 0.925rem;
  padding: 12px 32px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(56,225,198,0.25);
}
.btn-primary:hover {
  box-shadow: 0 0 24px rgba(56,225,198,0.4);
  transform: translateY(-2px);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--text-main);
  font-weight: 500;
  font-size: 0.925rem;
  padding: 12px 32px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.25);
  cursor: pointer;
  transition: all 0.3s ease;
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: #ffffff;
  box-shadow: 0 0 16px rgba(56,225,198,0.2);
}
.btn-secondary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ===== 侧边栏 ===== */
.article-sidebar {
  position: sticky;
  top: 96px;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
@media (max-width: 1023px) {
  .article-sidebar {
    position: static;
  }
}
.side-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  padding: 24px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.side-card:hover {
  border-color: rgba(56,225,198,0.3);
  box-shadow: var(--shadow-card);
}
.side-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--glass-border);
}
.side-card ul {
  list-style: none;
}
.side-card li {
  padding: 10px 0;
  color: var(--text-sub);
  font-size: 0.875rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.side-card li:last-child {
  border-bottom: none;
}
.side-card .link {
  color: var(--accent);
  font-size: 0.875rem;
  transition: color 0.3s;
}
.side-card .link:hover {
  text-decoration: underline;
}
.side-link-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.side-link-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-sub);
  font-size: 0.875rem;
  padding: 8px 12px;
  border-radius: 10px;
  transition: all 0.3s ease;
  background: rgba(255,255,255,0.02);
}
.side-link-list a:hover {
  color: var(--accent);
  background: rgba(56,225,198,0.08);
  transform: translateX(4px);
}

/* ===== 相关推荐 ===== */
.related-section {
  margin-top: 56px;
}
.related-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 24px;
}
.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 768px) {
  .related-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.related-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all 0.3s ease;
  display: block;
}
.related-card:hover {
  border-color: rgba(56,225,198,0.35);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  transform: translateY(-4px);
}
.related-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.related-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}
.related-card .body {
  padding: 20px;
}
.related-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.4;
}
.related-card p {
  font-size: 0.875rem;
  color: var(--text-sub);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(rgba(11,18,32,0.82), rgba(11,18,32,0.82)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding: 80px 0;
  border-top: 1px solid var(--glass-border);
}
.cta-inner {
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  line-height: 1.3;
}
.cta-inner p {
  color: var(--text-sub);
  margin-bottom: 32px;
  font-size: 1rem;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #070C14;
  border-top: 1px solid rgba(56,225,198,0.15);
  padding: 64px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}
.footer-brand .logo {
  display: inline-block;
}
.footer-brand p {
  margin-top: 16px;
  color: var(--text-sub);
  font-size: 0.875rem;
  max-width: 340px;
  line-height: 1.6;
}
.footer-col h4 {
  color: var(--text-main);
  font-size: 0.925rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: var(--text-sub);
  font-size: 0.875rem;
  padding: 6px 0;
  transition: color 0.3s;
}
.footer-col a:hover {
  color: var(--accent);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 24px;
  text-align: center;
  color: var(--text-weak);
  font-size: 0.8125rem;
}

/* ===== 焦点可见 ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ===== 响应式 ===== */
@media (max-width: 767px) {
  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .search-box.desktop {
    display: none;
  }
  .search-box.mobile {
    display: flex;
    margin-bottom: 12px;
  }
  .nav-bottom {
    display: none;
    flex-direction: column;
    gap: 12px;
    padding-bottom: 16px;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 12px;
  }
  .nav-bottom.open {
    display: flex;
  }
  .nav-bottom a.active::after {
    width: 40px;
  }
  .article-main {
    padding: 32px 0 64px;
  }
  .cta-section {
    padding: 56px 0;
  }
  .cta-inner h2 {
    font-size: 1.5rem;
  }
  .site-footer {
    padding: 48px 0 24px;
  }
  .footer-grid {
    gap: 32px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .logo {
    font-size: 1.25rem;
  }
  .nav-top {
    gap: 12px;
  }
  .breadcrumb-wrap .sep {
    margin: 0 4px;
  }
  .breadcrumb-wrap span:last-child {
    font-size: 0.75rem;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
}

/* roulang page: category2 */
:root {
            --bg-primary: #0B1220;
            --bg-secondary: #0E1A2B;
            --bg-tertiary: #070C14;
            --accent: #38E1C6;
            --accent-dark: #2BBFAA;
            --text-primary: #E7EDF4;
            --text-secondary: #94A3B8;
            --text-muted: #475569;
            --glass-bg: rgba(255, 255, 255, 0.04);
            --glass-border: rgba(255, 255, 255, 0.08);
            --radius-card: 16px;
            --radius-input: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.45);
            --spacing-section: 96px;
            --spacing-mobile: 64px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .3s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }
        *:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* ===== 头部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 18, 32, .92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }
        .header-top {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 16px 0 12px;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: .5px;
            white-space: nowrap;
            color: var(--text-primary);
            line-height: 1.2;
            flex-shrink: 0;
        }
        .logo-highlight {
            color: var(--accent);
        }
        .search-box {
            flex: 0 1 480px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-pill);
            padding: 8px 18px;
            transition: background .3s, border-color .3s, box-shadow .3s;
        }
        .search-box:focus-within {
            background: rgba(255, 255, 255, .12);
            border-color: var(--accent);
            box-shadow: 0 0 20px rgba(56, 225, 198, .25);
        }
        .search-box svg {
            width: 18px;
            height: 18px;
            stroke: var(--text-secondary);
            flex-shrink: 0;
        }
        .search-box input {
            width: 100%;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: .9375rem;
            margin-left: 8px;
            outline: none;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 10px;
            padding: 10px 12px;
            cursor: pointer;
            flex-shrink: 0;
            transition: border-color .3s;
        }
        .menu-toggle:hover {
            border-color: var(--accent);
        }
        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: background .3s;
        }
        .nav-bottom {
            display: flex;
            gap: 32px;
            padding-bottom: 14px;
        }
        .nav-bottom a {
            font-size: .9375rem;
            color: var(--text-secondary);
            font-weight: 500;
            padding: 6px 2px;
            border-bottom: 2px solid transparent;
            transition: color .3s, border-color .3s;
            white-space: nowrap;
        }
        .nav-bottom a:hover {
            color: var(--text-primary);
        }
        .nav-bottom a.active {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }
        /* ===== 面包屑 ===== */
        .breadcrumb {
            padding: 20px 0 0;
            font-size: .875rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            opacity: .5;
        }
        .breadcrumb .current {
            color: var(--text-primary);
        }
        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 460px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            isolation: isolate;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 18, 32, .94) 0%, rgba(11, 18, 32, .65) 55%, rgba(11, 18, 32, .35) 100%);
            z-index: -1;
        }
        .hero-content {
            max-width: 720px;
            padding: 80px 0;
        }
        .hero-content h1 {
            font-size: 3rem;
            line-height: 1.2;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: .5px;
        }
        .hero-content p {
            font-size: 1.125rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-radius: var(--radius-pill);
            padding: 13px 30px;
            font-weight: 600;
            font-size: .9375rem;
            transition: all .35s ease;
            cursor: pointer;
            border: none;
            line-height: 1.2;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #0B1220;
        }
        .btn-primary:hover {
            background: var(--accent);
            box-shadow: 0 0 24px rgba(56, 225, 198, .4);
            transform: translateY(-2px);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .16);
            color: var(--text-primary);
        }
        .btn-ghost:hover {
            border-color: var(--accent);
            color: #ffffff;
            transform: translateY(-2px);
        }
        /* ===== 通用板块 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-title {
            font-size: 2rem;
            line-height: 1.3;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: .3px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        /* ===== 卡片 ===== */
        .card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(56, 225, 198, .4);
        }
        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(56, 225, 198, .12);
            border: 1px solid rgba(56, 225, 198, .2);
            margin-bottom: 20px;
        }
        .card-icon svg {
            width: 22px;
            height: 22px;
            stroke: var(--accent);
        }
        .card h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card p {
            color: var(--text-secondary);
            font-size: .9375rem;
            line-height: 1.65;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-size: .875rem;
            color: var(--accent);
            font-weight: 500;
            transition: gap .3s;
        }
        .card-link:hover {
            gap: 10px;
        }
        /* ===== 图文区 ===== */
        .media-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }
        .media-content h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 16px;
            line-height: 1.4;
        }
        .media-content p {
            color: var(--text-secondary);
            margin-bottom: 16px;
            line-height: 1.75;
        }
        .media-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--glass-border);
        }
        .media-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }
        .feature-points {
            display: grid;
            gap: 12px;
            margin-top: 24px;
        }
        .feature-point {
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }
        .feature-point svg {
            width: 20px;
            height: 20px;
            stroke: var(--accent);
            flex-shrink: 0;
            margin-top: 3px;
        }
        .feature-point span {
            color: var(--text-secondary);
            font-size: .9375rem;
        }
        /* ===== 流程 ===== */
        .steps-section {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, .04);
            border-bottom: 1px solid rgba(255, 255, 255, .04);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-item {
            position: relative;
            padding: 28px 24px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            transition: transform .35s, border-color .35s;
        }
        .step-item:hover {
            transform: translateY(-4px);
            border-color: rgba(56, 225, 198, .4);
        }
        .step-num {
            font-size: 2rem;
            font-weight: 700;
            color: rgba(56, 225, 198, .3);
            line-height: 1;
            margin-bottom: 16px;
        }
        .step-item h3 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .step-item p {
            color: var(--text-secondary);
            font-size: .875rem;
            line-height: 1.6;
        }
        /* ===== 等级对比 ===== */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .tier-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            transition: transform .35s, border-color .35s, box-shadow .35s;
        }
        .tier-card:hover {
            transform: translateY(-4px);
            border-color: rgba(56, 225, 198, .35);
            box-shadow: var(--shadow-hover);
        }
        .tier-name {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .tier-desc {
            color: var(--text-secondary);
            font-size: .9375rem;
            line-height: 1.65;
        }
        .tier-tag {
            display: inline-block;
            background: rgba(56, 225, 198, .1);
            color: var(--accent);
            font-size: .8125rem;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
            border: 1px solid rgba(56, 225, 198, .15);
        }
        /* ===== FAQ ===== */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--glass-border);
            background: var(--glass-bg);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .3s;
        }
        .faq-item[open] {
            border-color: rgba(56, 225, 198, .3);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            list-style: none;
            font-weight: 500;
            font-size: 1.0625rem;
            line-height: 1.5;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            position: relative;
            border-radius: 50%;
            border: 1px solid rgba(56, 225, 198, .4);
            transition: transform .3s, background .3s;
        }
        .faq-item summary .icon::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 10px;
            height: 2px;
            background: var(--accent);
            transform: translate(-50%, -50%);
        }
        .faq-item summary .icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 2px;
            height: 10px;
            background: var(--accent);
            transform: translate(-50%, -50%);
            transition: opacity .3s, transform .3s;
        }
        .faq-item[open] summary .icon {
            transform: rotate(45deg);
            background: rgba(56, 225, 198, .15);
        }
        .faq-item .faq-body {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: .9375rem;
            line-height: 1.7;
        }
        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            isolation: isolate;
            text-align: center;
            padding: 96px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 18, 32, .85);
            z-index: -1;
        }
        .cta-inner {
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .cta-inner p {
            color: var(--text-secondary);
            font-size: 1.0625rem;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-tertiary);
            border-top: 1px solid rgba(56, 225, 198, .15);
            padding: 64px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
        }
        .footer-brand .logo {
            display: inline-block;
            margin-bottom: 14px;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: .9375rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col a {
            display: block;
            color: var(--text-secondary);
            font-size: .9375rem;
            padding: 4px 0;
            transition: color .3s;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 24px;
            margin-top: 48px;
            color: var(--text-muted);
            font-size: .875rem;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tier-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .media-grid {
                gap: 40px;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-mobile) 0;
            }
            .header-top {
                flex-wrap: wrap;
                gap: 14px;
            }
            .menu-toggle {
                display: inline-flex;
                margin-left: auto;
            }
            .search-box {
                flex: 1 1 100%;
                order: 3;
                margin-top: 4px;
            }
            .nav-bottom {
                display: none;
                flex-direction: column;
                gap: 0;
                padding: 12px 0 20px;
                width: 100%;
            }
            .nav-bottom.open {
                display: flex;
            }
            .nav-bottom a {
                padding: 12px 0;
                border-bottom: 1px solid rgba(255, 255, 255, .06);
                border-radius: 0;
            }
            .nav-bottom a.active {
                color: var(--accent);
                border-bottom: 1px solid rgba(56, 225, 198, .3);
            }
            .hero-content {
                padding: 56px 0;
            }
            .hero-content h1 {
                font-size: 2.25rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .media-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .media-image {
                order: -1;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .tier-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .cta-section {
                padding: 64px 0;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 20px;
            }
            .logo {
                font-size: 1.25rem;
            }
            .hero-content h1 {
                font-size: 1.875rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }