/* roulang page: index */
:root {
    --bg-0: #060B16;
    --bg-1: #0B1424;
    --brand: #22D3A6;
    --accent: #F5A524;
    --ice: #4CC9F0;
    --ink-1: #EAF1FB;
    --ink-2: #A9B6CC;
    --ink-3: #6E7C93;
    --line: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.16);
    --glass: rgba(255, 255, 255, 0.045);
    --radius-card: 16px;
    --radius-glass: 20px;
    --radius-btn: 12px;
    --shadow-card: 0 18px 40px -24px rgba(0, 0, 0, 0.75);
    --nav-w: 264px;
  }

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

  html { scroll-behavior: smooth; }

  body {
    margin: 0;
    background: var(--bg-0);
    color: var(--ink-1);
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    letter-spacing: 0;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; display: block; }
  h1, h2, h3, h4, p { margin: 0; }
  ul, ol { margin: 0; padding: 0; list-style: none; }
  button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
  input, textarea { font: inherit; color: inherit; }

  ::selection { background: rgba(34, 211, 166, 0.28); }

  :focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 2px;
    border-radius: 6px;
  }

  ::-webkit-scrollbar { width: 10px; height: 10px; }
  ::-webkit-scrollbar-track { background: #060B16; }
  ::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.12); border-radius: 999px; }
  ::-webkit-scrollbar-thumb:hover { background: rgba(34, 211, 166, 0.45); }

  /* ---------- 布局容器 ---------- */
  .container-x {
    width: 100%;
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 24px;
  }

  .section { padding: 96px 0; }
  .section-tight { padding: 72px 0; }

  /* ---------- 左侧导航 ---------- */
  .side-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--nav-w);
    height: 100vh;
    display: none;
    flex-direction: column;
    padding: 26px 18px 22px;
    background: rgba(11, 20, 36, 0.94);
    border-right: 1px solid var(--line);
    backdrop-filter: blur(14px);
    z-index: 60;
  }

  .brand-mark {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 4px 6px 18px;
    border-bottom: 1px solid var(--line);
  }

  .brand-logo {
    width: 38px;
    height: 38px;
    flex: 0 0 38px;
    border-radius: 11px;
    background: linear-gradient(135deg, #22D3A6 0%, #12A98A 55%, #0E8E77 100%);
    color: #04140F;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 18px;
    letter-spacing: -0.5px;
    box-shadow: 0 10px 26px -12px rgba(34, 211, 166, 0.75);
  }

  .brand-text { display: flex; flex-direction: column; line-height: 1.25; }
  .brand-text strong { font-size: 17px; font-weight: 800; letter-spacing: 0.2px; }
  .brand-text span { font-size: 12px; color: var(--ink-3); }

  .nav-group { margin-top: 20px; display: flex; flex-direction: column; }

  .nav-label {
    font-size: 12px;
    color: var(--ink-3);
    padding: 0 12px 8px;
    letter-spacing: 0.5px;
  }

  .nav-link {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
    height: 44px;
    padding: 0 12px;
    margin-bottom: 6px;
    border-radius: 10px;
    font-size: 15px;
    color: var(--ink-2);
    transition: background 200ms ease-out, color 200ms ease-out;
  }

  .nav-link:hover { background: rgba(255, 255, 255, 0.05); color: var(--ink-1); }

  .nav-link.active {
    color: var(--brand);
    background: rgba(34, 211, 166, 0.09);
  }

  .nav-link.active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    bottom: 10px;
    width: 3px;
    border-radius: 3px;
    background: var(--brand);
  }

  .nav-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.22);
    flex: 0 0 6px;
  }

  .nav-link.active .nav-dot { background: var(--brand); }

  .nav-foot {
    margin-top: auto;
    padding-top: 18px;
    border-top: 1px solid var(--line);
  }

  .nav-contact { font-size: 13px; color: var(--ink-3); line-height: 1.7; }
  .nav-contact b { display: block; color: var(--ink-2); font-weight: 600; font-size: 13px; }

  /* ---------- 移动端顶栏 ---------- */
  .topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 18px;
    background: rgba(9, 17, 31, 0.92);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(14px);
    z-index: 70;
  }

  .hamburger {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    border: 1px solid var(--line-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 200ms ease-out;
  }

  .hamburger:hover { background: rgba(255, 255, 255, 0.06); }

  .hamburger span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--ink-1);
    border-radius: 2px;
    position: relative;
  }

  .hamburger span::before,
  .hamburger span::after {
    content: "";
    position: absolute;
    left: 0;
    width: 18px;
    height: 2px;
    background: var(--ink-1);
    border-radius: 2px;
  }

  .hamburger span::before { top: -6px; }
  .hamburger span::after { top: 6px; }

  /* ---------- 抽屉 ---------- */
  .drawer {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: min(84vw, 320px);
    background: #0A1322;
    border-right: 1px solid var(--line);
    padding: 22px 16px;
    display: flex;
    flex-direction: column;
    transform: translateX(-102%);
    transition: transform 240ms ease-out;
    z-index: 90;
    overflow-y: auto;
  }

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

  .drawer-mask {
    position: fixed;
    inset: 0;
    background: rgba(4, 8, 16, 0.72);
    opacity: 0;
    pointer-events: none;
    transition: opacity 240ms ease-out;
    z-index: 80;
  }

  .drawer-mask.open { opacity: 1; pointer-events: auto; }

  /* ---------- 主内容 ---------- */
  .main-wrap { padding-top: 64px; }

  /* ---------- 通用组件 ---------- */
  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--brand);
    background: rgba(34, 211, 166, 0.1);
    border: 1px solid rgba(34, 211, 166, 0.24);
    border-radius: 6px;
    padding: 4px 10px;
    letter-spacing: 0.4px;
  }

  .h1 {
    font-size: clamp(32px, 4.6vw, 56px);
    line-height: 1.15;
    font-weight: 800;
    letter-spacing: -0.5px;
  }

  .h2 {
    font-size: clamp(24px, 3vw, 32px);
    line-height: 1.3;
    font-weight: 700;
    letter-spacing: -0.3px;
  }

  .h3 { font-size: 19px; line-height: 1.45; font-weight: 700; }

  .lede { color: var(--ink-2); font-size: 17px; line-height: 1.8; }
  .muted { color: var(--ink-3); font-size: 14px; }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 24px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    white-space: nowrap;
    transition: transform 200ms ease-out, background 200ms ease-out, box-shadow 200ms ease-out, border-color 200ms ease-out;
  }

  .btn-primary {
    background: var(--brand);
    color: #04140F;
    box-shadow: 0 0 0 1px rgba(34, 211, 166, 0.4), 0 10px 30px -10px rgba(34, 211, 166, 0.5);
  }

  .btn-primary:hover {
    background: #3FE0B7;
    box-shadow: 0 0 0 1px rgba(34, 211, 166, 0.6), 0 14px 36px -10px rgba(34, 211, 166, 0.68);
    transform: translateY(-1px);
  }

  .btn-primary:active { transform: translateY(1px); }

  .btn-ghost {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: var(--ink-1);
  }

  .btn-ghost:hover { background: rgba(255, 255, 255, 0.06); border-color: var(--line-strong); }
  .btn-ghost:active { transform: translateY(1px); }

  .btn-sm { height: 40px; padding: 0 18px; font-size: 14px; }
  .btn-block { width: 100%; }

  .btn[disabled], .btn.is-disabled {
    opacity: 0.45;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
  }

  .link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--brand);
    position: relative;
    padding-bottom: 2px;
  }

  .link-arrow::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    height: 1px;
    width: 0;
    background: var(--brand);
    transition: width 200ms ease-out;
  }

  .link-arrow:hover::after { width: 100%; }

  .card {
    position: relative;
    background: var(--bg-1);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    transition: transform 200ms ease-out, border-color 200ms ease-out, box-shadow 200ms ease-out;
  }

  .card:hover {
    border-color: var(--line-strong);
    transform: translateY(-2px);
    box-shadow: 0 22px 46px -26px rgba(0, 0, 0, 0.85);
  }

  .card-pad { padding: 28px; }

  .glass {
    background: var(--glass);
    border: 1px solid var(--line);
    backdrop-filter: blur(14px);
    border-radius: var(--radius-glass);
  }

  .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 24px;
    padding: 0 10px;
    border-radius: 6px;
    font-size: 12px;
    color: var(--brand);
    background: rgba(34, 211, 166, 0.1);
    border: 1px solid rgba(34, 211, 166, 0.24);
  }

  .badge-ice { color: var(--ice); background: rgba(76, 201, 240, 0.1); border-color: rgba(76, 201, 240, 0.24); }
  .badge-accent { color: var(--accent); background: rgba(245, 165, 36, 0.1); border-color: rgba(245, 165, 36, 0.24); }

  .metric-num {
    font-family: ui-monospace, "JetBrains Mono", Menlo, monospace;
    font-size: clamp(34px, 4vw, 52px);
    line-height: 1.1;
    font-weight: 700;
    color: var(--brand);
    letter-spacing: -1px;
  }

  .divider { height: 1px; background: var(--line); border: 0; margin: 0; }

  .dot-grid {
    background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 22px 22px;
  }

  .clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  /* ---------- Hero ---------- */
  .hero {
    position: relative;
    overflow: hidden;
    padding: 76px 0 84px;
    isolation: isolate;
  }

  .hero-bg {
    position: absolute;
    inset: 0;
    background-image: url("/assets/images/backpic/back-1.webp");
    background-size: cover;
    background-position: center;
    z-index: -2;
  }

  .hero-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(6, 11, 22, 0.78) 0%, rgba(6, 11, 22, 0.9) 62%, #060B16 100%);
  }

  .hero-panel-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .hero-panel-row:last-of-type { border-bottom: 0; }

  .progress-track {
    height: 6px;
    width: 100%;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    overflow: hidden;
  }

  .progress-fill {
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, #12A98A 0%, #22D3A6 60%, #4CC9F0 100%);
    box-shadow: 0 0 18px rgba(34, 211, 166, 0.5);
  }

  /* ---------- 痛点条带 ---------- */
  .pain-row {
    display: grid;
    grid-template-columns: 64px 1fr;
    gap: 24px;
    align-items: start;
    padding: 26px 28px;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.022), rgba(255, 255, 255, 0));
    transition: border-color 200ms ease-out, transform 200ms ease-out;
  }

  .pain-row:hover { border-color: var(--line-strong); transform: translateX(4px); }

  .pain-idx {
    font-family: ui-monospace, "JetBrains Mono", Menlo, monospace;
    font-size: 22px;
    color: rgba(34, 211, 166, 0.65);
    line-height: 1.4;
  }

  .pain-row:nth-child(2) { margin-left: 28px; }
  .pain-row:nth-child(3) { margin-left: 14px; }
  .pain-row:nth-child(4) { margin-left: 42px; }

  /* ---------- 能力要点列表 ---------- */
  .point-list li {
    position: relative;
    padding-left: 20px;
    color: var(--ink-2);
    font-size: 14.5px;
    line-height: 1.85;
  }

  .point-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 11px;
    width: 8px;
    height: 2px;
    border-radius: 2px;
    background: var(--brand);
  }

  /* ---------- 图文区块 ---------- */
  .figure-frame {
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--line);
    background: var(--bg-1);
  }

  .figure-frame img {
    width: 100%;
    height: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    transition: transform 300ms ease-out;
  }

  .figure-frame:hover img { transform: scale(1.03); }

  /* ---------- 资讯卡片 ---------- */
  .post-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 24px;
    background: var(--bg-1);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    transition: transform 200ms ease-out, border-color 200ms ease-out;
  }

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

  .post-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    color: var(--ink-3);
  }

  .post-title {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--ink-1);
    transition: color 200ms ease-out;
  }

  .post-card:hover .post-title { color: var(--brand); }

  .post-summary { color: var(--ink-2); font-size: 14px; line-height: 1.8; }

  .empty-state {
    border: 1px dashed rgba(255, 255, 255, 0.16);
    border-radius: var(--radius-card);
    padding: 56px 24px;
    text-align: center;
    background: rgba(255, 255, 255, 0.015);
  }

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

  .faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    min-height: 56px;
    padding: 18px 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink-1);
    cursor: pointer;
    list-style: none;
    transition: color 200ms ease-out;
  }

  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary:hover { color: var(--brand); }
  .faq-item[open] summary { color: var(--brand); }

  .faq-icon {
    position: relative;
    width: 18px;
    height: 18px;
    flex: 0 0 18px;
    transition: transform 200ms ease-out;
  }

  .faq-icon::before,
  .faq-icon::after {
    content: "";
    position: absolute;
    background: currentColor;
    border-radius: 2px;
  }

  .faq-icon::before { left: 0; top: 8px; width: 18px; height: 2px; }
  .faq-icon::after { top: 0; left: 8px; width: 2px; height: 18px; }

  .faq-item[open] .faq-icon { transform: rotate(45deg); }

  .faq-answer {
    padding: 0 0 20px;
    color: var(--ink-2);
    font-size: 15px;
    line-height: 1.8;
    max-width: 78ch;
  }

  /* ---------- CTA ---------- */
  .cta-band {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-glass);
    border: 1px solid rgba(34, 211, 166, 0.22);
    background: linear-gradient(120deg, rgba(34, 211, 166, 0.1) 0%, rgba(11, 20, 36, 0.9) 45%, rgba(76, 201, 240, 0.08) 100%);
    padding: 52px 40px;
  }

  /* ---------- 弹层 ---------- */
  .modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 120;
  }

  .modal.open { display: flex; }

  .modal-mask {
    position: absolute;
    inset: 0;
    background: rgba(4, 8, 16, 0.78);
    backdrop-filter: blur(4px);
  }

  .modal-panel {
    position: relative;
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 28px;
    border-radius: var(--radius-glass);
    background: rgba(13, 22, 39, 0.96);
    border: 1px solid var(--line-strong);
    box-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.95);
    animation: modalIn 220ms ease-out;
  }

  @keyframes modalIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 34px;
    height: 34px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ink-2);
    border: 1px solid var(--line);
    transition: background 200ms ease-out, color 200ms ease-out;
  }

  .modal-close:hover { background: rgba(255, 255, 255, 0.07); color: var(--ink-1); }

  .field { margin-bottom: 16px; }

  .field label {
    display: block;
    font-size: 13px;
    color: var(--ink-2);
    margin-bottom: 6px;
  }

  .field input[type="text"],
  .field input[type="tel"],
  .field textarea {
    width: 100%;
    height: 46px;
    padding: 0 14px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--line-strong);
    color: var(--ink-1);
    transition: border-color 200ms ease-out, box-shadow 200ms ease-out, background 200ms ease-out;
  }

  .field textarea { height: 96px; padding: 12px 14px; resize: vertical; line-height: 1.7; }

  .field input:focus,
  .field textarea:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 2px rgba(34, 211, 166, 0.28);
    background: rgba(255, 255, 255, 0.06);
  }

  .field input::placeholder,
  .field textarea::placeholder { color: #5C6B80; }

  .check-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13px;
    color: var(--ink-2);
    line-height: 1.7;
    margin: 18px 0 20px;
  }

  .check-row input[type="checkbox"] {
    width: 18px;
    height: 18px;
    flex: 0 0 18px;
    margin-top: 3px;
    accent-color: #22D3A6;
    cursor: pointer;
  }

  .check-row a { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; }

  /* ---------- 页脚 ---------- */
  .site-footer {
    border-top: 1px solid var(--line);
    background: #07101F;
    padding: 64px 0 28px;
  }

  .footer-link {
    display: block;
    font-size: 14px;
    color: var(--ink-2);
    padding: 5px 0;
    transition: color 200ms ease-out, transform 200ms ease-out;
  }

  .footer-link:hover { color: var(--brand); transform: translateX(3px); }

  /* ---------- 响应式 ---------- */
  @media (min-width: 1024px) {
    .side-nav { display: flex; }
    .topbar { display: none; }
    .drawer, .drawer-mask { display: none; }
    .main-wrap { padding-top: 0; padding-left: var(--nav-w); }
    .hero { padding: 92px 0 96px; }
  }

  @media (max-width: 1023px) {
    .section { padding: 72px 0; }
    .pain-row:nth-child(2),
    .pain-row:nth-child(3),
    .pain-row:nth-child(4) { margin-left: 0; }
  }

  @media (max-width: 640px) {
    .container-x { padding: 0 18px; }
    .section { padding: 56px 0; }
    .section-tight { padding: 48px 0; }
    .card-pad { padding: 22px; }
    .pain-row { grid-template-columns: 44px 1fr; gap: 14px; padding: 20px; }
    .cta-band { padding: 34px 22px; }
    .modal-panel { padding: 22px; }
    .btn { width: 100%; }
    .btn-inline { width: auto; }
  }

  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 0.001ms !important;
      transition-duration: 0.001ms !important;
      scroll-behavior: auto !important;
    }
  }

/* roulang page: article */
:root{
    --bg-0:#060B16;
    --bg-1:#0B1424;
    --glass:rgba(255,255,255,.045);
    --glass-border:rgba(255,255,255,.08);
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.16);
    --brand:#22D3A6;
    --brand-soft:rgba(34,211,166,.14);
    --accent:#F5A524;
    --ice:#4CC9F0;
    --text:#EAF1FB;
    --text-2:#A9B6CC;
    --text-3:#6E7C93;
    --radius-card:16px;
    --radius-glass:20px;
    --radius-btn:12px;
    --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
    --sidebar-w:264px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--bg-0);
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }
  body::before{
    content:'';
    position:fixed;inset:0;
    background-image:radial-gradient(rgba(255,255,255,.055) 1px, transparent 1px);
    background-size:22px 22px;
    opacity:.5;
    pointer-events:none;
    z-index:0;
  }
  a{color:var(--brand);text-decoration:none;transition:color .2s ease-out,opacity .2s ease-out;}
  a:hover{color:#5FE8C2;}
  img{max-width:100%;display:block;}
  button,input,textarea,select{font:inherit;color:inherit;}
  h1,h2,h3,h4,p{margin:0;}
  ul,ol{margin:0;padding:0;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
  .container-x{width:100%;max-width:1160px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}
  .muted{color:var(--text-2);font-size:14px;line-height:1.8;}
  .divider{height:1px;background:var(--line);}

  /* ---------- 侧栏导航 ---------- */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
    display:none;flex-direction:column;
    padding:22px 18px;
    background:linear-gradient(180deg,rgba(11,20,36,.96),rgba(6,11,22,.96));
    border-right:1px solid var(--line);
    backdrop-filter:blur(14px);
    z-index:60;
  }
  .brand-logo{
    display:inline-flex;align-items:center;justify-content:center;
    width:36px;height:36px;border-radius:11px;
    background:linear-gradient(140deg,var(--brand),#12A87F);
    color:#04120D;font-weight:800;font-size:19px;font-family:ui-monospace,monospace;
    box-shadow:0 0 0 1px rgba(34,211,166,.4),0 10px 26px -12px rgba(34,211,166,.55);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-text strong{font-size:17px;letter-spacing:.4px;font-weight:800;color:var(--text);}
  .brand-text span{font-size:11.5px;color:var(--text-3);letter-spacing:1.2px;margin-top:2px;}
  .nav-group{display:flex;flex-direction:column;gap:6px;margin-top:26px;}
  .nav-label{font-size:11px;letter-spacing:1.6px;color:var(--text-3);padding:0 10px 8px;}
  .nav-link{
    display:flex;align-items:center;gap:10px;
    height:44px;padding:0 12px;border-radius:10px;
    color:var(--text-2);font-size:14.5px;
    border-left:3px solid transparent;
    transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  }
  .nav-link:hover{background:rgba(255,255,255,.05);color:var(--text);}
  .nav-link.active{
    color:var(--brand);background:var(--brand-soft);border-left-color:var(--brand);
    box-shadow:inset 0 0 22px -14px rgba(34,211,166,.8);
  }
  .nav-dot{width:5px;height:5px;border-radius:50%;background:currentColor;opacity:.55;flex:0 0 auto;}
  .sidebar-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);}
  .btn-side{
    display:flex;align-items:center;justify-content:center;
    height:44px;border-radius:var(--radius-btn);
    background:var(--brand);color:#04120D;font-weight:700;font-size:15px;
    border:none;cursor:pointer;width:100%;
    box-shadow:0 0 0 1px rgba(34,211,166,.4),0 10px 30px -10px rgba(34,211,166,.5);
    transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
  }
  .btn-side:hover{background:#3AE0B4;box-shadow:0 14px 36px -10px rgba(34,211,166,.6);}
  .btn-side:active{transform:translateY(1px);}

  /* ---------- 移动端顶栏 / 抽屉 ---------- */
  .topbar{
    position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
    display:flex;align-items:center;justify-content:space-between;
    padding:0 18px;
    background:rgba(6,11,22,.9);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(12px);
  }
  .hamburger{
    width:42px;height:42px;border-radius:11px;border:1px solid var(--glass-border);
    background:var(--glass);display:inline-flex;align-items:center;justify-content:center;
    cursor:pointer;color:var(--text);
  }
  .hamburger:hover{background:rgba(255,255,255,.09);}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(4,8,16,.72);z-index:80;
    opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s ease-out;
  }
  .drawer-mask.open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;left:0;bottom:0;width:min(84vw,320px);z-index:90;
    background:#08111F;border-right:1px solid var(--line);
    padding:22px 18px;display:flex;flex-direction:column;
    transform:translateX(-102%);transition:transform .28s ease-out;
  }
  .drawer.open{transform:translateX(0);}

  /* ---------- 主区 ---------- */
  .main-area{position:relative;z-index:1;padding-top:64px;}
  .inner-banner{
    position:relative;overflow:hidden;
    border-bottom:1px solid var(--line);
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
  }
  .inner-banner::after{
    content:'';position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(6,11,22,.86),rgba(6,11,22,.94));
  }
  .inner-banner .container-x{position:relative;z-index:2;}

  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);flex-wrap:wrap;}
  .crumb a{color:var(--text-3);}
  .crumb a:hover{color:var(--brand);}
  .crumb .sep{color:rgba(255,255,255,.22);}
  .crumb .current{color:var(--text-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    height:26px;padding:0 10px;border-radius:6px;
    font-size:12px;letter-spacing:.4px;
    background:var(--brand-soft);color:var(--brand);border:1px solid rgba(34,211,166,.28);
  }
  .badge-neutral{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--glass-border);}
  .badge-accent{background:var(--accent-soft,rgba(245,165,36,.14));color:var(--accent);border-color:rgba(245,165,36,.3);}

  .meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:14px;color:var(--text-3);}
  .meta-row .dot{width:3px;height:3px;border-radius:50%;background:rgba(255,255,255,.28);}

  .glass-panel{
    background:var(--glass);
    border:1px solid var(--glass-border);
    border-radius:var(--radius-glass);
    backdrop-filter:blur(12px);
  }

  /* ---------- 正文排版 ---------- */
  .article-body{
    max-width:780px;
    font-size:16.5px;
    line-height:1.85;
    color:#D6DEEE;
  }
  .article-body h2{
    position:relative;
    font-size:26px;line-height:1.35;font-weight:700;color:var(--text);
    margin:46px 0 16px;padding-left:14px;
  }
  .article-body h2::before{
    content:'';position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:2px;background:var(--brand);
  }
  .article-body h3{font-size:19.5px;line-height:1.45;font-weight:700;color:var(--text);margin:32px 0 12px;}
  .article-body h4{font-size:17px;font-weight:700;color:var(--text);margin:24px 0 10px;}
  .article-body p{margin:16px 0;}
  .article-body ul,.article-body ol{margin:16px 0 16px 4px;padding-left:20px;}
  .article-body li{margin:8px 0;padding-left:4px;}
  .article-body ul li::marker{color:var(--brand);}
  .article-body ol li::marker{color:var(--brand);font-family:ui-monospace,monospace;}
  .article-body blockquote{
    margin:24px 0;padding:16px 20px;
    background:rgba(255,255,255,.035);
    border-left:3px solid var(--brand);
    border-radius:0 12px 12px 0;
    color:var(--text-2);
  }
  .article-body blockquote p{margin:6px 0;}
  .article-body img{
    width:100%;height:auto;border-radius:14px;margin:24px 0 10px;
    border:1px solid var(--line);
  }
  .article-body figure{margin:24px 0;}
  .article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:6px;}
  .article-body a{text-decoration:underline;text-underline-offset:3px;}
  .article-body strong{color:#FFFFFF;font-weight:700;}
  .article-body table{
    display:block;width:100%;overflow-x:auto;
    border-collapse:collapse;margin:24px 0;font-size:15px;white-space:nowrap;
  }
  .article-body th{
    background:rgba(34,211,166,.1);color:var(--text);font-weight:700;
    text-align:left;padding:12px 16px;border:1px solid var(--line);
  }
  .article-body td{padding:11px 16px;border:1px solid var(--line);color:var(--text-2);}
  .article-body tbody tr:nth-child(even){background:rgba(255,255,255,.025);}
  .article-body pre{
    background:#050A13;border:1px solid var(--line);border-radius:12px;
    padding:16px 18px;overflow-x:auto;font-family:ui-monospace,monospace;font-size:14px;
    color:#B9E9DA;margin:22px 0;
  }
  .article-body code{font-family:ui-monospace,monospace;font-size:14.5px;color:#7FEBD0;}
  .article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}

  /* ---------- 卡片与列表 ---------- */
  .card{
    background:var(--bg-1);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
  }
  .card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:0 22px 46px -26px rgba(0,0,0,.85);}
  .card-media{aspect-ratio:16/9;overflow:hidden;border-radius:12px;background:#0E1A2C;}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;filter:saturate(.95);}
  .card:hover .card-media img{transform:scale(1.03);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
    transition:background .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  }
  .btn-primary{
    background:var(--brand);color:#04120D;
    box-shadow:0 0 0 1px rgba(34,211,166,.4),0 10px 30px -10px rgba(34,211,166,.5);
  }
  .btn-primary:hover{background:#3AE0B4;box-shadow:0 14px 36px -10px rgba(34,211,166,.62);color:#04120D;}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{
    background:transparent;color:var(--text);border-color:rgba(255,255,255,.18);
  }
  .btn-ghost:hover{background:rgba(255,255,255,.06);color:var(--text);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn[disabled]{opacity:.45;cursor:not-allowed;box-shadow:none;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand);
    background-image:linear-gradient(currentColor,currentColor);
    background-size:0% 1px;background-repeat:no-repeat;background-position:0 100%;
    transition:background-size .25s ease-out;
  }
  .link-arrow:hover{background-size:100% 1px;}

  /* ---------- FAQ ---------- */
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:58px;padding:14px 2px;background:none;border:none;cursor:pointer;text-align:left;
    font-size:16px;font-weight:600;color:var(--text);
  }
  .faq-q:hover{color:var(--brand);}
  .faq-icon{flex:0 0 auto;color:var(--brand);font-family:ui-monospace,monospace;transition:transform .25s ease-out;}
  .faq-item.open .faq-icon{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out;}
  .faq-a p{padding:0 2px 18px;font-size:15px;line-height:1.8;color:var(--text-2);}

  /* ---------- 弹层表单 ---------- */
  .modal{
    position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;
    padding:20px;opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s ease-out;
  }
  .modal.open{opacity:1;visibility:visible;}
  .modal-mask{position:absolute;inset:0;background:rgba(4,8,16,.78);backdrop-filter:blur(3px);}
  .modal-card{
    position:relative;width:100%;max-width:520px;padding:28px;
    background:rgba(11,20,36,.96);border:1px solid var(--glass-border);
    border-radius:var(--radius-glass);box-shadow:0 30px 70px -30px rgba(0,0,0,.9);
    max-height:90vh;overflow-y:auto;
  }
  .field{margin-bottom:14px;}
  .field label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:6px;}
  .field input,.field textarea{
    width:100%;border-radius:10px;border:1px solid var(--glass-border);
    background:rgba(255,255,255,.04);color:var(--text);
    padding:11px 13px;min-height:46px;transition:border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .field textarea{min-height:88px;resize:vertical;line-height:1.7;}
  .field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
  .field input:focus,.field textarea:focus{
    outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(34,211,166,.28);
  }
  .check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-2);margin:6px 0 18px;}
  .check-row input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);}
  .modal-close{
    position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:10px;
    border:1px solid var(--glass-border);background:rgba(255,255,255,.04);
    color:var(--text-2);cursor:pointer;
  }
  .modal-close:hover{background:rgba(255,255,255,.1);color:var(--text);}

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:96px;border-top:1px solid var(--line);
    background:linear-gradient(180deg,rgba(11,20,36,.5),rgba(6,11,22,.9));
    padding:64px 0 32px;position:relative;z-index:1;
  }
  .footer-link{display:block;font-size:14px;color:var(--text-2);padding:5px 0;transition:color .2s ease-out,transform .2s ease-out;}
  .footer-link:hover{color:var(--brand);transform:translateX(3px);}

  .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease-out,transform .6s ease-out;}
  .reveal.in{opacity:1;transform:none;}

  @media (min-width:1024px){
    .sidebar{display:flex;}
    .topbar{display:none;}
    .main-area{padding-top:0;padding-left:var(--sidebar-w);}
    .drawer,.drawer-mask{display:none;}
  }
  @media (max-width:768px){
    .container-x{padding:0 18px;}
    .article-body{font-size:16px;line-height:1.8;}
    .article-body h2{font-size:22px;}
    .article-body h3{font-size:18px;}
    .site-footer{margin-top:64px;padding:48px 0 26px;}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;}
    .reveal{opacity:1;transform:none;}
  }

/* roulang page: category1 */
:root{
    --bg-0:#060B16;
    --bg-1:#0B1424;
    --glass:rgba(255,255,255,.045);
    --line:rgba(255,255,255,.08);
    --line-2:rgba(255,255,255,.18);
    --line-strong:rgba(255,255,255,.16);
    --ink:#EAF1FB;
    --ink-2:#A9B6CC;
    --ink-3:#6E7C93;
    --brand:#22D3A6;
    --accent:#F5A524;
    --ice:#4CC9F0;
    --r-card:16px;
    --r-panel:20px;
    --r-btn:12px;
    --r-img:14px;
    --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
    --shadow-glow:0 0 0 1px rgba(34,211,166,.4), 0 10px 30px -10px rgba(34,211,166,.5);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg-0);
    color:var(--ink);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background-image:radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
    background-size:22px 22px;
    opacity:.45;
  }
  img{max-width:100%;display:block;border-style:none;}
  a{color:var(--brand);text-decoration:none;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  button{font-family:inherit;cursor:pointer;}
  input,textarea{font-family:inherit;}
  ::selection{background:rgba(34,211,166,.28);}

  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:var(--bg-0);}
  ::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:999px;}
  ::-webkit-scrollbar-thumb:hover{background:rgba(34,211,166,.4);}

  .container-x{width:100%;max-width:1160px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}
  .muted{color:var(--ink-2);font-size:14px;line-height:1.8;margin:0;}
  .divider{height:1px;background:var(--line);}

  /* ---------- 品牌 ---------- */
  .brand-logo{
    width:38px;height:38px;flex:0 0 38px;border-radius:11px;
    display:flex;align-items:center;justify-content:center;
    background:linear-gradient(145deg, rgba(34,211,166,.9), rgba(76,201,240,.55));
    color:#04120E;font-weight:800;font-size:20px;font-family:ui-monospace,"JetBrains Mono",monospace;
    box-shadow:0 8px 20px -10px rgba(34,211,166,.7);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.2;}
  .brand-text strong{font-size:16px;letter-spacing:.4px;color:var(--ink);font-weight:700;}
  .brand-text span{font-size:12px;color:var(--ink-3);letter-spacing:.5px;}

  /* ---------- 左侧导航 ---------- */
  .side-nav{
    position:fixed;top:0;left:0;bottom:0;width:264px;z-index:60;
    display:flex;flex-direction:column;
    padding:24px 16px 20px;
    background:linear-gradient(180deg, rgba(11,20,36,.96), rgba(6,11,22,.96));
    backdrop-filter:blur(14px);
    border-right:1px solid var(--line);
    transition:transform .28s ease-out;
  }
  .nav-head{display:flex;align-items:center;gap:10px;padding:0 8px 22px;border-bottom:1px solid var(--line);}
  .nav-body{flex:1;overflow-y:auto;padding:18px 0 8px;}
  .nav-group{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
  .nav-label{
    font-size:12px;color:var(--ink-3);letter-spacing:.6px;
    padding:0 12px 6px;display:block;
  }
  .nav-link{
    position:relative;display:flex;align-items:center;gap:10px;
    height:44px;padding:0 12px;border-radius:10px;
    color:var(--ink-2);font-size:14.5px;
    transition:background .2s ease-out, color .2s ease-out, transform .2s ease-out;
  }
  .nav-link:hover{background:rgba(255,255,255,.05);color:var(--ink);}
  .nav-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .nav-dot{
    width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.22);flex:0 0 6px;
    transition:background .2s ease-out, box-shadow .2s ease-out;
  }
  .nav-link.active{
    color:var(--brand);background:rgba(34,211,166,.08);
    box-shadow:inset 0 0 0 1px rgba(34,211,166,.16);
  }
  .nav-link.active .nav-dot{background:var(--brand);box-shadow:0 0 8px rgba(34,211,166,.9);}
  .nav-link.active::before{
    content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;
    background:var(--brand);
  }
  .nav-foot{border-top:1px solid var(--line);padding-top:16px;display:flex;flex-direction:column;gap:10px;}

  /* ---------- 顶部栏（移动） ---------- */
  .top-bar{
    position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
    display:flex;align-items:center;justify-content:space-between;
    padding:0 16px;
    background:rgba(6,11,22,.9);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .top-bar .brand{display:flex;align-items:center;gap:10px;}
  .hamburger{
    width:42px;height:42px;border-radius:12px;border:1px solid var(--line-2);
    background:transparent;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:4px;
    transition:background .2s ease-out,border-color .2s ease-out;
  }
  .hamburger:hover{background:rgba(255,255,255,.06);border-color:var(--line-strong);}
  .hamburger:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);}
  .nav-mask{
    position:fixed;inset:0;background:rgba(4,8,16,.72);z-index:55;
    opacity:0;visibility:hidden;transition:opacity .25s ease-out, visibility .25s ease-out;
  }

  /* ---------- 主内容 ---------- */
  .main-wrap{padding-top:64px;position:relative;z-index:1;}
  @media (min-width:1024px){
    .main-wrap{padding-top:0;padding-left:264px;}
  }

  .section{padding:56px 0;}
  @media (min-width:768px){ .section{padding:72px 0;} }
  @media (min-width:1024px){ .section{padding:96px 0;} }

  .sec-head{max-width:720px;margin-bottom:36px;}
  .sec-head h2{font-size:26px;line-height:1.3;font-weight:700;}
  @media (min-width:768px){ .sec-head h2{font-size:30px;} }
  .sec-head p{margin-top:12px;color:var(--ink-2);font-size:15px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:1px;color:var(--brand);
    border:1px solid rgba(34,211,166,.28);background:rgba(34,211,166,.07);
    padding:5px 10px;border-radius:999px;margin-bottom:18px;
  }

  /* ---------- 面包屑 ---------- */
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);flex-wrap:wrap;}
  .breadcrumb a{color:var(--ink-2);}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .crumb-sep{color:var(--ink-3);}
  .breadcrumb [aria-current]{color:var(--brand);}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;padding:28px 0 56px;
    background-image:linear-gradient(180deg, rgba(6,11,22,.86), rgba(6,11,22,.94)), url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
    border-bottom:1px solid var(--line);
  }
  @media (min-width:1024px){ .hero{padding:36px 0 80px;} }
  .hero-title{
    font-size:clamp(32px,4.6vw,56px);line-height:1.15;font-weight:800;letter-spacing:0;
    margin-top:20px;
  }
  .hero-sub{color:var(--ink-2);font-size:16px;line-height:1.8;margin-top:18px;max-width:52ch;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-points{list-style:none;padding:0;margin:30px 0 0;display:grid;gap:10px;}
  .hero-points li{display:flex;gap:10px;align-items:flex-start;color:var(--ink-2);font-size:14.5px;}
  .hero-points li::before{
    content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);
    margin-top:10px;flex:0 0 6px;box-shadow:0 0 8px rgba(34,211,166,.8);
  }

  .glass-panel{
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--r-panel);
    box-shadow:var(--shadow-card);
    backdrop-filter:blur(12px);
    padding:22px;
  }
  .panel-title{font-size:13px;color:var(--ink-3);letter-spacing:.8px;margin-bottom:16px;}
  .panel-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);}
  .panel-row:last-of-type{border-bottom:none;}
  .panel-row span{font-size:14px;color:var(--ink-2);}
  .panel-row strong{font-family:ui-monospace,"JetBrains Mono",monospace;font-size:18px;color:var(--brand);}
  .progress{height:6px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:14px;}
  .progress i{display:block;height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--ice));transition:width 1.1s ease-out;}
  .hero-media{position:relative;border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--line);}
  .hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;}
  .hero-media::after{content:"";position:absolute;inset:0;background:rgba(6,11,22,.55);}

  /* ---------- 按钮 ---------- */
  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:0 22px;height:46px;border-radius:var(--r-btn);border:none;
    background:linear-gradient(135deg,#22D3A6,#17B08A);color:#04120E;
    font-size:15px;font-weight:700;
    box-shadow:var(--shadow-glow);
    transition:transform .2s ease-out, box-shadow .2s ease-out, filter .2s ease-out;
  }
  .btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 1px rgba(34,211,166,.55), 0 14px 36px -10px rgba(34,211,166,.6);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-primary:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}
  .btn-primary[disabled]{opacity:.45;cursor:not-allowed;box-shadow:none;filter:none;}
  .btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:0 20px;height:46px;border-radius:var(--r-btn);
    background:transparent;border:1px solid var(--line-2);color:var(--ink);
    font-size:15px;transition:background .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
  }
  .btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--line-strong);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn-ghost:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand);background:linear-gradient(currentColor,currentColor) no-repeat 0 100%;background-size:0 1px;transition:background-size .25s ease-out;}
  .link-arrow:hover{background-size:100% 1px;}
  .link-arrow::after{content:"→";transition:transform .2s ease-out;}
  .link-arrow:hover::after{transform:translateX(3px);}

  /* ---------- 标签 / 徽章 ---------- */
  .badge{
    display:inline-flex;align-items:center;font-size:12px;line-height:1;
    padding:5px 9px;border-radius:6px;
    color:var(--brand);background:rgba(34,211,166,.1);border:1px solid rgba(34,211,166,.24);
  }
  .tag{
    display:inline-flex;align-items:center;font-size:12px;line-height:1;
    padding:5px 9px;border-radius:6px;color:var(--ink-2);
    background:rgba(255,255,255,.04);border:1px solid var(--line);
  }
  .tag-accent{color:var(--accent);border-color:rgba(245,165,36,.28);background:rgba(245,165,36,.08);}

  /* ---------- 治理范围：左筛选 + 右纵向列表 ---------- */
  .gov-layout{display:grid;grid-template-columns:1fr;gap:24px;}
  @media (min-width:1024px){ .gov-layout{grid-template-columns:220px minmax(0,1fr);gap:32px;} }
  .filter-col{
    display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;
    scrollbar-width:none;
  }
  .filter-col::-webkit-scrollbar{display:none;}
  @media (min-width:1024px){
    .filter-col{flex-direction:column;overflow:visible;position:sticky;top:32px;align-self:start;padding-bottom:0;}
  }
  .filter-title{display:none;}
  @media (min-width:1024px){
    .filter-title{display:block;font-size:12px;color:var(--ink-3);letter-spacing:.8px;margin-bottom:12px;}
  }
  .filter-btn{
    white-space:nowrap;height:40px;padding:0 14px;border-radius:10px;
    background:rgba(255,255,255,.03);border:1px solid var(--line);
    color:var(--ink-2);font-size:14px;text-align:left;
    transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  }
  @media (min-width:1024px){ .filter-btn{width:100%;} }
  .filter-btn:hover{background:rgba(255,255,255,.06);color:var(--ink);}
  .filter-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .filter-btn.active{color:var(--brand);border-color:rgba(34,211,166,.4);background:rgba(34,211,166,.08);}

  .list-col{display:flex;flex-direction:column;gap:16px;}
  .list-item{
    background:var(--bg-1);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:22px;
    box-shadow:var(--shadow-card);
    transition:border-color .2s ease-out, transform .2s ease-out, box-shadow .2s ease-out;
  }
  .list-item:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:0 14px 36px -10px rgba(0,0,0,.8);}
  .list-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:12px;}
  .list-item h3{font-size:19px;font-weight:700;line-height:1.4;}
  .list-item p{margin-top:10px;color:var(--ink-2);font-size:14.5px;line-height:1.8;}
  .list-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
  .list-foot{margin-top:16px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;}
  .empty-hint{
    display:none;padding:28px;border:1px dashed var(--line-2);border-radius:var(--r-card);
    color:var(--ink-2);font-size:14px;text-align:center;
  }

  /* ---------- 错位栅格 ---------- */
  .split-8-4{display:grid;grid-template-columns:1fr;gap:24px;}
  @media (min-width:1024px){ .split-8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:36px;align-items:start;} }
  .split-7-5{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;}
  @media (min-width:1024px){
    .split-7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:44px;}
    .split-7-5.rev > *:first-child{order:2;}
  }
  .card{
    background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
    padding:24px;box-shadow:var(--shadow-card);
    transition:border-color .2s ease-out,transform .2s ease-out;
  }
  .card:hover{border-color:var(--line-strong);transform:translateY(-2px);}
  .card h3{font-size:19px;font-weight:700;}
  .card p{margin-top:10px;color:var(--ink-2);font-size:14.5px;line-height:1.8;}
  .check-list{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:9px;}
  .check-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2);}
  .check-list li::before{content:"✓";color:var(--brand);font-weight:700;}

  .img-16x9{aspect-ratio:16/9;overflow:hidden;border-radius:var(--r-img);border:1px solid var(--line);}
  .img-16x9 img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease-out;}
  .img-16x9:hover img{transform:scale(1.03);}

  /* ---------- 指标条带 ---------- */
  .stat-strip{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;
    background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  }
  @media (min-width:1024px){ .stat-strip{grid-template-columns:repeat(4,minmax(0,1fr));} }
  .stat-item{background:var(--bg-1);padding:26px 22px;}
  .stat-num{
    font-family:ui-monospace,"JetBrains Mono",monospace;
    font-size:clamp(32px,4vw,48px);line-height:1.1;color:var(--brand);font-weight:700;
  }
  .stat-label{margin-top:8px;font-size:14px;color:var(--ink-2);}

  /* ---------- FAQ ---------- */
  .qa-grid{display:grid;grid-template-columns:1fr;gap:16px;}
  @media (min-width:900px){ .qa-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  .qa-card{
    background:var(--bg-1);border:1px solid var(--line);border-left:3px solid var(--brand);
    border-radius:var(--r-card);padding:22px;
  }
  .qa-card h3{font-size:17px;font-weight:700;line-height:1.5;}
  .qa-card p{margin-top:10px;color:var(--ink-2);font-size:14.5px;line-height:1.85;}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;border-radius:var(--r-panel);overflow:hidden;
    border:1px solid var(--line);
    background-image:linear-gradient(180deg, rgba(6,11,22,.82), rgba(6,11,22,.94)), url('/assets/images/backpic/back-3.webp');
    background-size:cover;background-position:center;
    padding:40px 26px;
  }
  @media (min-width:768px){ .cta-band{padding:56px 48px;} }
  .cta-band h2{font-size:26px;font-weight:800;line-height:1.3;}
  @media (min-width:768px){ .cta-band h2{font-size:32px;} }
  .cta-band p{margin-top:14px;color:var(--ink-2);font-size:15px;max-width:56ch;}

  /* ---------- 弹层表单 ---------- */
  .modal{
    position:fixed;inset:0;z-index:90;display:flex;align-items:center;justify-content:center;
    padding:20px;opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s ease-out;
  }
  .modal.open{opacity:1;visibility:visible;}
  .modal-mask{position:absolute;inset:0;background:rgba(4,8,16,.78);}
  .modal-card{
    position:relative;width:100%;max-width:520px;max-height:90vh;overflow-y:auto;
    background:rgba(11,20,36,.96);border:1px solid var(--line-strong);
    border-radius:var(--r-panel);padding:28px;box-shadow:0 30px 60px -30px rgba(0,0,0,.9);
    transform:translateY(10px);transition:transform .25s ease-out;
  }
  .modal.open .modal-card{transform:translateY(0);}
  .modal-card h2{font-size:21px;font-weight:700;}
  .modal-card > p{margin-top:10px;color:var(--ink-2);font-size:14px;}
  .modal-close{
    position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:10px;
    background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--ink-2);font-size:18px;line-height:1;
    transition:background .2s ease-out,color .2s ease-out;
  }
  .modal-close:hover{background:rgba(255,255,255,.09);color:var(--ink);}
  .modal-close:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
  .form-field{margin-top:16px;}
  .form-field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:7px;}
  .form-field input,.form-field textarea{
    width:100%;height:46px;padding:0 14px;border-radius:10px;
    background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--ink);
    font-size:15px;transition:border-color .2s ease-out, box-shadow .2s ease-out;
  }
  .form-field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
  .form-field input:focus,.form-field textarea:focus{
    outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(34,211,166,.28);
  }
  .check-row{display:flex;gap:10px;align-items:flex-start;margin-top:18px;font-size:13px;color:var(--ink-2);line-height:1.7;}
  .check-row input{width:16px;height:16px;margin-top:4px;accent-color:#22D3A6;flex:0 0 16px;}
  .check-row a{text-decoration:underline;}

  /* ---------- 图片叙事块 ---------- */
  .figure-note{margin-top:10px;font-size:13px;color:var(--ink-3);}

  /* ---------- 页脚 ---------- */
  .site-footer{
    border-top:1px solid var(--line);
    background:linear-gradient(180deg, rgba(11,20,36,.6), rgba(6,11,22,1));
    padding:56px 0 32px;position:relative;z-index:1;
  }
  .site-footer h3{color:var(--ink);}
  .footer-link{display:block;color:var(--ink-2);font-size:14px;padding:6px 0;transition:color .2s ease-out,transform .2s ease-out;}
  .footer-link:hover{color:var(--brand);transform:translateX(3px);}
  .footer-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

  /* ---------- 移动端 ---------- */
  @media (max-width:1023px){
    .side-nav{transform:translateX(-100%);box-shadow:0 0 60px rgba(0,0,0,.7);}
    body.nav-open .side-nav{transform:translateX(0);}
    body.nav-open .nav-mask{opacity:1;visibility:visible;}
    body.nav-open{overflow:hidden;}
  }

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  }

/* roulang page: category2 */
:root{
  --brand:#22D3A6;
  --brand-strong:#3ee0b8;
  --brand-dim:rgba(34,211,166,.13);
  --accent:#F5A524;
  --ice:#4CC9F0;
  --bg0:#060B16;
  --bg1:#0B1424;
  --bg2:#101D31;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(255,255,255,.045);
  --ink:#EAF1FB;
  --ink2:#A9B6CC;
  --ink3:#6E7C93;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-input:10px;
  --r-badge:6px;
  --r-img:14px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.75);
  --glow:0 0 0 1px rgba(34,211,166,.4),0 10px 30px -10px rgba(34,211,166,.5);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg0);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--brand-strong);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container-x{width:100%;max-width:1160px;margin:0 auto;padding:0 24px;}

/* 排版 */
.h1{font-size:clamp(32px,4.6vw,56px);line-height:1.15;font-weight:800;margin:0;letter-spacing:0;}
.h2{font-size:clamp(24px,2.7vw,32px);line-height:1.3;font-weight:700;margin:0;letter-spacing:0;}
.h3{font-size:19px;line-height:1.45;font-weight:700;margin:0;}
.lede{font-size:17px;line-height:1.8;color:var(--ink2);}
.muted{color:var(--ink2);font-size:14px;line-height:1.75;}
.weak{color:var(--ink3);font-size:13px;line-height:1.7;}
.mono{font-family:var(--font-mono);}

/* 品牌 */
.brand-logo{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:linear-gradient(135deg,#22D3A6,#0e8f74);
  color:#04121A;display:grid;place-items:center;
  font-family:var(--font-mono);font-weight:800;font-size:18px;
  box-shadow:var(--glow);
}
.brand-text strong{display:block;font-size:15px;line-height:1.2;font-weight:700;color:var(--ink);}
.brand-text span{display:block;font-size:12px;line-height:1.4;color:var(--ink3);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:0;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,background .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.btn-primary{background:var(--brand);color:#04121A;box-shadow:var(--glow);}
.btn-primary:hover{background:var(--brand-strong);color:#04121A;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(34,211,166,.6),0 14px 36px -10px rgba(34,211,166,.6);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--ink);}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--line-strong);color:var(--ink);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn:disabled{background:#25334a;color:#7d8ba3;box-shadow:none;cursor:not-allowed;transform:none;}
.btn-block{width:100%;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}

.text-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:15px;
}
.text-link::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;
  background:var(--brand);transition:width .2s ease-out;
}
.text-link:hover::after{width:100%;}

/* 徽章与标签 */
.badge{
  display:inline-block;font-size:12px;
  padding:4px 10px;border-radius:var(--r-badge);
  background:var(--brand-dim);color:var(--brand);
  border:1px solid rgba(34,211,166,.24);
}
.badge-accent{background:rgba(245,165,36,.12);color:var(--accent);border-color:rgba(245,165,36,.28);}
.tag-strip{
  display:flex;gap:10px;overflow-x:auto;padding:4px 0 14px;
  -webkit-overflow-scrolling:touch;scrollbar-width:thin;
}
.tag-strip::-webkit-scrollbar{height:6px;}
.tag-strip::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:99px;}
.tag{
  white-space:nowrap;font-size:13px;padding:8px 15px;
  border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--ink2);
  transition:all .2s ease-out;
}
.tag:hover{border-color:rgba(34,211,166,.42);color:var(--brand);background:rgba(34,211,166,.06);}

/* 侧栏导航 */
.sidebar{display:none;}
.drawer{
  position:fixed;top:0;left:0;height:100vh;width:min(84vw,320px);
  background:rgba(11,20,36,.98);border-right:1px solid var(--line);
  z-index:100;transform:translateX(-102%);
  transition:transform .26s ease-out;
  padding:20px 16px;overflow-y:auto;
  display:flex;flex-direction:column;
}
.drawer.open{transform:none;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,8,16,.72);
  z-index:90;opacity:0;pointer-events:none;transition:opacity .2s ease-out;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}

.sidebar-head,.drawer-head{display:flex;align-items:center;gap:10px;padding:6px 8px 18px;}
.sidebar-nav,.drawer-nav{display:flex;flex-direction:column;}
.nav-label{
  display:block;font-size:12px;color:var(--ink3);
  margin:16px 12px 8px;line-height:1.4;
}
.nav-link{
  display:flex;align-items:center;gap:10px;
  min-height:44px;padding:0 12px;margin-bottom:6px;
  border-radius:10px;border-left:3px solid transparent;
  color:var(--ink2);font-size:15px;line-height:1.4;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.nav-link:hover{background:rgba(255,255,255,.05);color:var(--ink);}
.nav-link.active{
  color:var(--brand);
  background:linear-gradient(90deg,rgba(34,211,166,.15),rgba(34,211,166,0));
  border-left-color:var(--brand);
  box-shadow:inset 0 0 0 1px rgba(34,211,166,.16);
}
.nav-dot{width:6px;height:6px;flex:0 0 6px;border-radius:50%;background:currentColor;opacity:.55;}
.sidebar-foot,.drawer-foot{
  margin-top:auto;padding-top:20px;border-top:1px solid var(--line);
}
.sidebar-foot .muted,.drawer-foot .muted{font-size:13px;margin-top:12px;word-break:break-all;}

/* 顶部移动栏 */
.topbar{
  position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 18px;
  background:rgba(6,11,22,.9);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.menu-btn{
  width:44px;height:44px;border-radius:10px;
  display:grid;place-items:center;gap:5px;
  border:1px solid var(--line);
  transition:background .2s ease-out,border-color .2s ease-out;
}
.menu-btn:hover{background:rgba(255,255,255,.06);border-color:var(--line-strong);}
.menu-btn span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);}

/* 主内容偏移 */
.main-wrap{padding-top:64px;}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink3);margin-bottom:22px;}
.crumb a{color:var(--ink3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{opacity:.5;}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  padding:64px 0 72px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(rgba(6,11,22,.85),rgba(6,11,22,.95)),url(/assets/images/backpic/back-2.png);
  background-size:cover;
  background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.7;
}
.hero-inner{position:relative;z-index:2;}
.hero-copy .badge{margin-bottom:18px;}
.hero-copy .h1{margin-bottom:18px;}
.hero-lead{font-size:clamp(17px,1.6vw,20px);line-height:1.7;color:var(--ink);font-weight:600;max-width:30ch;margin-bottom:16px;}
.hero-desc{max-width:56ch;color:var(--ink2);font-size:15px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:32px 0 30px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:28px;padding-top:24px;border-top:1px solid var(--line);}
.hero-meta div{min-width:120px;}
.hero-meta .k{font-size:12px;color:var(--ink3);}
.hero-meta .v{font-size:15px;color:var(--ink);font-weight:600;}

.hero-panel{
  margin-top:38px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  backdrop-filter:blur(16px);
  padding:26px;
  box-shadow:var(--shadow);
}
.panel-title{font-size:13px;color:var(--ink3);margin-bottom:20px;}
.panel-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.08);}
.panel-row:last-of-type{border-bottom:0;}
.panel-row .label{font-size:14px;color:var(--ink2);}
.panel-row .num{font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--brand);}
.panel-row .num.amber{color:var(--accent);}
.panel-bar{margin-top:18px;}
.panel-bar .bar{height:6px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden;}
.panel-bar .bar i{display:block;height:100%;width:96%;background:linear-gradient(90deg,#22D3A6,#4CC9F0);border-radius:99px;}
.panel-bar .cap{display:flex;justify-content:space-between;font-size:12px;color:var(--ink3);margin-top:8px;}

/* 板块 */
.section{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:38px;}
.section-head .h2{margin-bottom:14px;}
.section-head .lede{font-size:16px;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.06em;
  color:var(--brand);margin-bottom:12px;
}
.divider{height:1px;background:var(--line);}

/* 卡片 */
.card{
  background:var(--bg1);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  padding:26px;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.card:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.card .h3{margin-bottom:12px;}
.card .muted{margin-bottom:16px;}
.card ul{margin-bottom:18px;}
.card ul li{
  position:relative;padding-left:18px;margin-bottom:8px;
  font-size:14px;color:var(--ink2);line-height:1.7;
}
.card ul li::before{
  content:"";position:absolute;left:0;top:10px;
  width:6px;height:6px;border-radius:2px;background:var(--brand);opacity:.8;
}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
.card-index{font-family:var(--font-mono);font-size:13px;color:var(--ink3);}

.grid-2{display:grid;grid-template-columns:1fr;gap:24px;}
.grid-3{display:grid;grid-template-columns:1fr;gap:24px;}
.grid-4{display:grid;grid-template-columns:1fr;gap:20px;}

/* 问句条带 */
.strip{
  display:grid;grid-template-columns:1fr;gap:18px;
  border-top:1px solid var(--line);
  padding-top:22px;
}
.strip-item{
  display:grid;grid-template-columns:48px 1fr;gap:18px;align-items:start;
  padding-bottom:20px;border-bottom:1px solid var(--line);
}
.strip-item:last-child{border-bottom:0;padding-bottom:0;}
.strip-num{
  font-family:var(--font-mono);font-size:20px;font-weight:700;
  color:var(--brand);opacity:.85;line-height:1.3;
}
.strip-q{font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;margin-bottom:6px;}
.strip-a{font-size:14px;color:var(--ink2);line-height:1.75;}
.strip-item.offset{transform:none;}

/* 流程 */
.flow{display:grid;grid-template-columns:1fr;gap:16px;}
.flow-step{
  background:var(--bg2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  transition:border-color .2s ease-out,transform .2s ease-out;
}
.flow-step:hover{border-color:rgba(34,211,166,.35);transform:translateY(-2px);}
.flow-step .step-no{
  font-family:var(--font-mono);font-size:13px;color:var(--brand);
  display:inline-block;margin-bottom:12px;
}
.flow-step .h3{font-size:17px;margin-bottom:8px;}
.flow-step p{font-size:14px;color:var(--ink2);}

/* 指标条带 */
.metric-band{
  display:grid;grid-template-columns:1fr;gap:20px;
  background:var(--bg1);border:1px solid var(--line);
  border-radius:var(--r-panel);padding:30px;
  box-shadow:var(--shadow);
}
.metric{text-align:left;}
.metric .num{
  font-family:var(--font-mono);font-weight:700;letter-spacing:-.02em;
  font-size:clamp(32px,4vw,48px);line-height:1.1;color:var(--brand);
}
.metric .num.amber{color:var(--accent);}
.metric .cap{font-size:13px;color:var(--ink3);margin-top:8px;}
.figure{
  margin-top:24px;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);background:var(--bg2);
}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease-out;}
.figure:hover img{transform:scale(1.03);}

/* 场景 */
.scene{
  display:grid;grid-template-columns:1fr;gap:20px;
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--bg1);padding:26px;
}
.scene-tag{
  display:inline-block;font-size:12px;color:var(--ice);
  border:1px solid rgba(76,201,240,.3);
  background:rgba(76,201,240,.08);
  padding:4px 10px;border-radius:var(--r-badge);margin-bottom:12px;
}
.scene-list li{
  display:flex;justify-content:space-between;gap:16px;
  padding:12px 0;border-bottom:1px solid var(--line);
  font-size:14px;color:var(--ink2);
}
.scene-list li:last-child{border-bottom:0;}
.scene-list li strong{color:var(--ink);font-weight:600;}

/* FAQ */
.faq{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  gap:20px;min-height:56px;padding:18px 0;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex:0 0 auto;font-family:var(--font-mono);font-size:22px;line-height:1;
  color:var(--brand);transition:transform .22s ease-out;
}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out;}
.faq-item.open .faq-a{max-height:400px;}
.faq-a-inner{padding-bottom:20px;font-size:15px;line-height:1.85;color:var(--ink2);max-width:76ch;}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--r-panel);
  background:linear-gradient(115deg,rgba(34,211,166,.14),rgba(11,20,36,.9) 52%);
  padding:40px 30px;
  display:grid;grid-template-columns:1fr;gap:26px;
}
.cta-band .h2{margin-bottom:12px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* 弹层 */
.modal{position:fixed;inset:0;display:none;place-items:center;z-index:120;padding:20px;}
.modal.open{display:grid;}
.modal-mask{position:absolute;inset:0;background:rgba(4,8,16,.74);backdrop-filter:blur(6px);}
.modal-panel{
  position:relative;width:100%;max-width:520px;
  background:rgba(11,20,36,.97);
  border:1px solid var(--line-strong);
  border-radius:var(--r-panel);
  padding:28px;
  box-shadow:0 30px 80px -30px #000;
  animation:pop .22s ease-out;
  max-height:92vh;overflow-y:auto;
}
@keyframes pop{from{opacity:0;transform:translateY(14px) scale(.98);}to{opacity:1;transform:none;}}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:8px;}
.modal-close{
  width:36px;height:36px;border-radius:10px;font-size:20px;line-height:1;
  border:1px solid var(--line);color:var(--ink2);
  transition:all .2s ease-out;
}
.modal-close:hover{color:var(--ink);border-color:var(--line-strong);background:rgba(255,255,255,.06);}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px;}
.field label{font-size:13px;color:var(--ink2);}
.input,.textarea{
  width:100%;height:46px;padding:0 14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  color:var(--ink);
  transition:border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.textarea{height:auto;min-height:98px;padding:12px 14px;resize:vertical;line-height:1.7;}
.input::placeholder,.textarea::placeholder{color:var(--ink3);}
.input:focus,.textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(34,211,166,.22);background:rgba(255,255,255,.06);}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink2);line-height:1.7;margin:6px 0 20px;}
.check input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand);flex:0 0 16px;}
.check a{color:var(--brand);text-decoration:underline;}

/* 页脚 */
.site-footer{
  border-top:1px solid var(--line);
  padding:56px 0 30px;
  background:var(--bg0);
  margin-top:20px;
}
.footer-link{
  display:block;font-size:14px;color:var(--ink2);
  padding:6px 0;transition:color .2s ease-out,transform .2s ease-out;
}
.footer-link:hover{color:var(--brand);transform:translateX(2px);}

/* 滚动入场 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.show{opacity:1;transform:none;}

/* 响应式 */
@media (min-width:640px){
  .grid-2{grid-template-columns:1fr 1fr;}
  .grid-4{grid-template-columns:1fr 1fr;}
  .metric-band{grid-template-columns:1fr 1fr;}
  .hero{padding:72px 0 84px;}
}
@media (min-width:768px){
  .section{padding:84px 0;}
  .grid-3{grid-template-columns:repeat(3,1fr);}
  .flow{grid-template-columns:1fr 1fr;}
  .strip-item{grid-template-columns:60px 1fr;gap:22px;}
  .scene{grid-template-columns:1fr 1fr;align-items:start;}
  .cta-band{grid-template-columns:7fr 5fr;align-items:center;padding:48px 40px;}
  .hero-panel{margin-top:0;}
}
@media (min-width:1024px){
  .topbar{display:none;}
  .drawer,.drawer-mask{display:none;}
  .sidebar{
    position:fixed;top:0;left:0;width:264px;height:100vh;
    background:rgba(11,20,36,.92);
    backdrop-filter:blur(18px);
    border-right:1px solid var(--line);
    padding:22px 16px 20px;
    display:flex;flex-direction:column;
    z-index:60;overflow-y:auto;
  }
  .main-wrap{padding-top:0;padding-left:264px;}
  .section{padding:96px 0;}
  .hero{padding:88px 0 96px;}
  .hero-inner{display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center;}
  .grid-4{grid-template-columns:repeat(4,1fr);}
  .metric-band{grid-template-columns:repeat(4,1fr);padding:36px;}
  .flow{grid-template-columns:repeat(5,1fr);}
  .strip-item.offset{transform:translateX(28px);}
}
@media (min-width:1280px){
  .container-x{padding:0 32px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category4 */
:root{
  --bg-0:#060B16;
  --bg-1:#0B1424;
  --bg-2:#0F1A2E;
  --brand:#22D3A6;
  --brand-soft:rgba(34,211,166,.14);
  --accent:#F5A524;
  --ice:#4CC9F0;
  --ink:#EAF1FB;
  --ink-2:#A9B6CC;
  --ink-3:#6E7C93;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(255,255,255,.045);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-input:10px;
  --r-badge:6px;
  --r-img:14px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-btn:0 0 0 1px rgba(34,211,166,.4),0 10px 30px -10px rgba(34,211,166,.5);
  --sidebar:264px;
  --section-gap:96px;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg-0);color:var(--ink);
  font-family:var(--font-sans);font-size:16px;line-height:1.75;letter-spacing:0;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:24px 24px;opacity:.4;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 62%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 62%);
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease-out}
a:hover{color:#5AE6C0}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
strong{font-weight:700}
.container-x{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}
.muted{color:var(--ink-2);font-size:14px;line-height:1.75}
.divider{height:1px;background:var(--line)}

/* 左侧导航 */
.site-side{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);z-index:60;
  display:flex;flex-direction:column;gap:22px;
  padding:24px 16px 20px;
  background:rgba(9,16,29,.92);
  border-right:1px solid var(--line);
  backdrop-filter:blur(14px);
  transform:translateX(-102%);
  transition:transform .24s ease-out;
  overflow-y:auto;
}
.site-side.open{transform:translateX(0)}
.brand{display:flex;align-items:center;gap:10px;padding:0 8px 18px;border-bottom:1px solid var(--line)}
.brand-logo{
  display:grid;place-items:center;width:34px;height:34px;flex:none;border-radius:10px;
  background:linear-gradient(140deg,#22D3A6,#4CC9F0);color:#04121F;
  font-family:var(--font-mono);font-weight:800;font-size:19px;line-height:1;
  box-shadow:0 0 0 1px rgba(34,211,166,.35),0 8px 22px -10px rgba(34,211,166,.6);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;letter-spacing:.02em;color:var(--ink)}
.brand-text span{font-size:11.5px;color:var(--ink-3)}
.nav-group{display:flex;flex-direction:column;gap:6px}
.nav-label{font-size:12px;color:var(--ink-3);margin:0 0 2px 12px}
.nav-link{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;
  border-radius:10px;color:var(--ink-2);font-size:14.5px;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-link:hover{background:rgba(255,255,255,.05);color:var(--ink)}
.nav-link.active{color:#fff;background:linear-gradient(90deg,rgba(34,211,166,.18),rgba(34,211,166,0))}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;
  background:var(--brand);box-shadow:0 0 12px rgba(34,211,166,.85);
}
.nav-dot{width:6px;height:6px;flex:none;border-radius:50%;background:var(--ink-3);transition:background .2s ease-out,box-shadow .2s ease-out}
.nav-link.active .nav-dot{background:var(--brand);box-shadow:0 0 10px rgba(34,211,166,.9)}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;padding-top:18px;border-top:1px solid var(--line)}
.side-contact{font-size:12.5px;color:var(--ink-3);line-height:1.6;padding:0 4px}

/* 移动顶部栏与抽屉遮罩 */
.site-topbar{
  position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:0 16px;
  background:rgba(8,14,26,.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.topbar-brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.hamburger{
  width:42px;height:42px;display:grid;place-items:center;gap:4px;
  background:transparent;border:1px solid var(--line-strong);border-radius:10px;
  transition:background .2s ease-out,border-color .2s ease-out;
}
.hamburger:hover{background:rgba(255,255,255,.06);border-color:var(--line-strong)}
.hamburger span{display:block;width:16px;height:1.6px;border-radius:2px;background:var(--ink)}
.hamburger span+span{margin-top:4px}
.drawer-mask{
  position:fixed;inset:0;z-index:55;background:rgba(4,8,16,.72);
  opacity:0;visibility:hidden;transition:opacity .24s ease-out,visibility .24s ease-out;
}
.drawer-mask.show{opacity:1;visibility:visible}

/* 主区域 */
.app-main{padding-top:64px;position:relative;z-index:1}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3)}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--ink-3);opacity:.6}
.crumb [aria-current]{color:var(--ink)}

/* Hero */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(6,11,22,.86),rgba(6,11,22,.94))}
.hero-inner{position:relative;padding:44px 0 64px}
.hero-grid{display:grid;gap:36px;margin-top:26px}
.hero-copy h1{font-size:clamp(32px,4.6vw,56px);line-height:1.15}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;
  padding:5px 12px;border-radius:var(--r-badge);
  font-size:12px;color:var(--brand);background:var(--brand-soft);
  border:1px solid rgba(34,211,166,.28);
}
.hero-sub{margin-top:16px;font-size:17px;color:var(--ink-2);max-width:56ch}
.hero-desc{margin-top:14px;font-size:15px;color:var(--ink-3);max-width:62ch;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border:0;border-radius:var(--r-btn);
  background:var(--brand);color:#04121F;font-size:15px;font-weight:700;
  box-shadow:var(--shadow-btn);
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.btn-primary:hover{background:#3FE0B6;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(34,211,166,.5),0 14px 34px -10px rgba(34,211,166,.62);color:#04121F}
.btn-primary:active{transform:translateY(1px)}
.btn-primary:disabled{background:rgba(34,211,166,.3);color:rgba(4,18,31,.7);box-shadow:none;cursor:not-allowed;transform:none}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  background:transparent;border:1px solid var(--line-strong);color:var(--ink);
  font-size:15px;font-weight:600;
  transition:background .2s ease-out,border-color .2s ease-out,transform .2s ease-out;
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.28);color:var(--ink)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand);position:relative;
}
.link-arrow::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
}
.link-arrow:hover::after{transform:scaleX(1)}

/* Hero 玻璃面板 */
.hero-panel{
  border-radius:var(--r-panel);padding:24px;
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.panel-head h3{font-size:18px}
.badge{
  display:inline-flex;align-items:center;padding:3px 9px;border-radius:var(--r-badge);
  font-size:12px;color:var(--ice);background:rgba(76,201,240,.12);
  border:1px solid rgba(76,201,240,.28);white-space:nowrap;
}
.metric-list{display:flex;flex-direction:column;gap:16px}
.metric-row{display:grid;grid-template-columns:1fr auto;gap:6px 12px;align-items:baseline}
.metric-name{font-size:14px;color:var(--ink-2)}
.metric-num{font-family:var(--font-mono);font-size:16px;color:var(--brand);font-weight:600}
.bar{grid-column:1 / -1;height:4px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
.bar::after{content:"";display:block;height:100%;width:var(--w,60%);border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--ice))}

/* 板块 */
.section{padding:var(--section-gap) 0;position:relative}
.section-tight{padding-top:0}
.section-head{max-width:64ch;margin-bottom:36px}
.eyebrow{font-size:12px;color:var(--brand);letter-spacing:.02em;margin-bottom:10px}
.section-head h2{font-size:clamp(24px,2.6vw,31px)}
.section-head p{margin-top:12px;color:var(--ink-2);font-size:15.5px}

/* 指标条带 */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  background:var(--line);
}
.stat-cell{background:var(--bg-1);padding:26px 22px}
.stat-num{font-family:var(--font-mono);font-size:clamp(28px,3.6vw,40px);font-weight:700;color:var(--brand);line-height:1.1}
.stat-label{margin-top:8px;font-size:14px;color:var(--ink-2)}
.stat-note{margin-top:4px;font-size:12.5px;color:var(--ink-3)}

/* 支持通道横向条带 */
.channel-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line)}
.channel-row{
  display:grid;grid-template-columns:88px 1fr;gap:20px;align-items:start;
  padding:26px 4px;border-bottom:1px solid var(--line);
  transition:background .2s ease-out;
}
.channel-row:hover{background:rgba(255,255,255,.03)}
.channel-no{font-family:var(--font-mono);font-size:22px;color:var(--ink-3);line-height:1.2}
.channel-row:hover .channel-no{color:var(--brand)}
.channel-body h3{font-size:19px}
.channel-body p{margin-top:8px;color:var(--ink-2);font-size:15px;max-width:70ch}

/* 阶段进度 */
.stage-track{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.stage-card{
  position:relative;padding:22px 20px;border-radius:var(--r-card);
  background:var(--bg-1);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:border-color .2s ease-out,transform .2s ease-out;
}
.stage-card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.stage-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
.stage-index{font-family:var(--font-mono);font-size:13px;color:var(--ink-3)}
.stage-pill{font-size:11.5px;color:var(--brand);background:var(--brand-soft);border:1px solid rgba(34,211,166,.26);border-radius:var(--r-badge);padding:2px 8px}
.stage-card h3{font-size:19px}
.stage-card p{margin-top:10px;font-size:14.5px;color:var(--ink-2)}

/* FAQ */
.faq-wrap{display:grid;gap:32px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:18px 4px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-mark{position:relative;width:20px;height:20px;flex:none;transition:transform .2s ease-out}
.faq-mark::before,.faq-mark::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-mark::before{width:14px;height:1.6px}
.faq-mark::after{width:1.6px;height:14px}
.faq-item[open] .faq-mark{transform:rotate(45deg)}
.faq-answer{padding:0 4px 22px;font-size:15px;color:var(--ink-2);line-height:1.8;max-width:76ch}

/* 案例纵向列表 */
.case-list{display:flex;flex-direction:column;gap:16px}
.case-row{
  display:grid;grid-template-columns:1fr;gap:0;overflow:hidden;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.case-row:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:0 22px 46px -24px rgba(0,0,0,.85)}
.case-body{padding:24px 22px}
.case-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.tag{
  display:inline-flex;align-items:center;padding:3px 9px;border-radius:var(--r-badge);
  font-size:12px;color:var(--ink-2);background:rgba(255,255,255,.05);
  border:1px solid var(--line);
}
.tag.tag-brand{color:var(--brand);background:var(--brand-soft);border-color:rgba(34,211,166,.26)}
.case-body h3{font-size:20px;line-height:1.4}
.case-body p{margin-top:10px;font-size:15px;color:var(--ink-2)}
.case-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:18px}
.case-meta{font-family:var(--font-mono);font-size:12.5px;color:var(--ink-3)}
.case-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.case-row:hover .case-media img{transform:scale(1.03)}
.case-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,22,.12),rgba(6,11,22,.4))}

/* CTA 条带 */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  padding:44px 36px;
  background:linear-gradient(120deg,rgba(34,211,166,.14),rgba(76,201,240,.07) 58%,rgba(11,20,36,1));
  border:1px solid rgba(34,211,166,.26);
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(23px,2.4vw,29px)}
.cta-band p{margin-top:12px;color:var(--ink-2);font-size:15.5px;max-width:60ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* 弹层 */
.modal{position:fixed;inset:0;z-index:90;display:none;align-items:center;justify-content:center;padding:20px}
.modal.open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(4,8,16,.74);backdrop-filter:blur(5px)}
.modal-card{
  position:relative;width:100%;max-width:520px;max-height:88vh;overflow-y:auto;
  border-radius:var(--r-panel);padding:28px;
  background:rgba(13,21,36,.96);
  border:1px solid var(--line-strong);
  box-shadow:0 30px 70px -30px rgba(0,0,0,.9);
  animation:modalIn .22s ease-out;
}
@keyframes modalIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:6px}
.modal-head h2{font-size:21px}
.modal-close{
  width:36px;height:36px;flex:none;display:grid;place-items:center;
  border-radius:10px;border:1px solid var(--line);background:transparent;color:var(--ink-2);
  font-size:18px;line-height:1;transition:background .2s ease-out,color .2s ease-out;
}
.modal-close:hover{background:rgba(255,255,255,.07);color:var(--ink)}
.modal-sub{font-size:14px;color:var(--ink-2);margin-bottom:20px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:13.5px;color:var(--ink-2)}
.field input,.field textarea{
  width:100%;min-height:46px;padding:11px 13px;border-radius:var(--r-input);
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--ink);
  font-size:15px;transition:border-color .2s ease-out,box-shadow .2s ease-out,background .2s ease-out;
}
.field textarea{min-height:88px;resize:vertical}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(34,211,166,.28);
  background:rgba(255,255,255,.06);
}
.check-row{display:flex;align-items:flex-start;gap:10px;margin:18px 0 20px;font-size:13.5px;color:var(--ink-2);line-height:1.7}
.check-row input{width:17px;height:17px;flex:none;margin-top:3px;accent-color:var(--brand)}
.check-row a{color:var(--brand)}
.form-note{font-size:12.5px;color:var(--ink-3);margin-top:14px;line-height:1.7}

/* 页脚 */
.site-footer{
  position:relative;z-index:1;
  padding:64px 0 28px;
  background:var(--bg-1);
  border-top:1px solid var(--line);
}
.footer-link{display:block;color:var(--ink-2);font-size:14px;padding:5px 0;transition:color .2s ease-out,transform .2s ease-out}
.footer-link:hover{color:var(--brand);transform:translateX(2px)}
.site-footer h3{color:var(--ink)}
.site-footer .flex{display:flex}
.site-footer .flex-wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}
.site-footer .items-center{display:flex;align-items:center;gap:10px}
.site-footer .grid{display:grid;gap:32px}

/* 响应式 */
@media (min-width:768px){
  .container-x{padding:0 28px}
  .hero-inner{padding:56px 0 76px}
  .hero-grid{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:center;gap:40px}
  .case-row{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);align-items:stretch}
  .case-row.rev .case-media{order:-1}
  .case-body{padding:28px 26px}
  .site-footer .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1024px){
  .site-topbar{display:none}
  .drawer-mask{display:none}
  .site-side{transform:translateX(0)}
  .app-main{padding-top:0;padding-left:var(--sidebar)}
  .hero-inner{padding:64px 0 88px}
  .site-footer{padding-left:var(--sidebar)}
  .site-footer .grid{grid-template-columns:repeat(4,minmax(0,1fr))}
  .section-gap-lg{padding:104px 0}
}
@media (max-width:1023px){
  :root{--section-gap:72px}
  .faq-wrap{gap:24px}
}
@media (max-width:767px){
  :root{--section-gap:56px}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stage-track{grid-template-columns:1fr}
  .channel-row{grid-template-columns:1fr;gap:8px;padding:22px 2px}
  .cta-band{padding:30px 22px}
  .modal-card{padding:22px}
  .brand{padding-bottom:14px}
}
@media (max-width:520px){
  .stat-strip{grid-template-columns:1fr}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%}
  .cta-actions .btn-primary,.cta-actions .btn-ghost{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --bg-0:#060B16;
  --bg-1:#0B1424;
  --bg-2:#101B2E;
  --brand:#22D3A6;
  --brand-soft:rgba(34,211,166,.14);
  --brand-line:rgba(34,211,166,.4);
  --accent:#F5A524;
  --ice:#4CC9F0;
  --text:#EAF1FB;
  --text-2:#A9B6CC;
  --text-3:#6E7C93;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(255,255,255,.045);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-hover:0 14px 36px -10px rgba(0,0,0,.85);
  --shadow-brand:0 0 0 1px rgba(34,211,166,.4), 0 10px 30px -10px rgba(34,211,166,.5);
  --maxw:1200px;
  --sidebar-w:264px;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg-0);
  background-image:radial-gradient(rgba(255,255,255,.055) 1px, transparent 1px);
  background-size:22px 22px;
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
input,textarea,select{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.muted{color:var(--text-2);}
.small{font-size:14px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#04120D;padding:10px 16px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;}

/* ---------- 容器与主区 ---------- */
.container-x{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.app-shell{min-height:100vh;}
.app-main{padding-bottom:0;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:linear-gradient(180deg, rgba(11,20,36,0) 0%, rgba(11,20,36,.9) 22%, rgba(11,20,36,.9) 78%, rgba(11,20,36,0) 100%);}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.04em;color:var(--brand);
  background:var(--brand-soft);border:1px solid rgba(34,211,166,.24);
  padding:5px 12px;border-radius:6px;margin-bottom:18px;
}
.section-title{font-size:clamp(24px,2.4vw,31px);margin-bottom:14px;}
.section-desc{color:var(--text-2);font-size:16px;}
.divider{height:1px;background:var(--line);}

/* ---------- 侧边导航 ---------- */
.app-sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);z-index:60;
  background:rgba(11,20,36,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:26px 20px;
  overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:11px;margin-bottom:30px;}
.brand-logo{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-weight:700;font-size:19px;color:#04120D;
  background:linear-gradient(140deg,#22D3A6,#4CC9F0);
  box-shadow:var(--shadow-brand);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:17px;color:var(--text);letter-spacing:.01em;}
.brand-text span{font-size:12px;color:var(--text-3);letter-spacing:.02em;}
.nav-group{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.nav-label{font-size:12px;color:var(--text-3);padding:0 12px 6px;letter-spacing:.05em;}
.nav-link{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px 0 15px;border-radius:10px;
  color:var(--text-2);font-size:15px;transition:background var(--ease),color var(--ease);
}
.nav-link:hover{background:rgba(255,255,255,.05);color:var(--text);}
.nav-link.active{
  color:var(--brand);
  background:linear-gradient(90deg, rgba(34,211,166,.16), rgba(34,211,166,.02));
}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(34,211,166,.75);
}
.nav-dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.55;flex:0 0 6px;}
.sidebar-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px;}
.sidebar-foot .muted{font-size:13px;}

/* ---------- 移动端顶栏与抽屉 ---------- */
.app-topbar{
  display:none;position:fixed;left:0;right:0;top:0;height:64px;z-index:70;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(6,11,22,.92);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.hamburger{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:var(--glass);color:var(--text);display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background var(--ease),border-color var(--ease);
}
.hamburger:hover{background:rgba(255,255,255,.08);border-color:var(--line-strong);}
.app-drawer{
  position:fixed;left:0;top:0;bottom:0;width:min(84vw,320px);z-index:90;
  background:rgba(9,16,29,.98);border-right:1px solid var(--line);
  transform:translateX(-102%);transition:transform 260ms ease-out;
  padding:24px 20px;overflow-y:auto;
}
.app-drawer.open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,8,16,.72);z-index:80;opacity:0;pointer-events:none;
  transition:opacity 240ms ease-out;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform var(--ease),background var(--ease),box-shadow var(--ease),border-color var(--ease),color var(--ease);
}
.btn-primary{background:var(--brand);color:#04120D;box-shadow:var(--shadow-brand);}
.btn-primary:hover{background:#31E7B8;color:#04120D;box-shadow:0 0 0 1px rgba(34,211,166,.55), 0 14px 34px -8px rgba(34,211,166,.6);}
.btn-primary:active{transform:translateY(1px);}
.btn-primary:disabled{background:#22303F;color:#5D6B80;box-shadow:none;cursor:not-allowed;}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text);}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--line-strong);color:var(--text);}
.btn-ghost:active{transform:translateY(1px);}
.btn-block{width:100%;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;position:relative;}
.link-arrow::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--brand);transition:width var(--ease);}
.link-arrow:hover::after{width:100%;}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);padding:26px 0 0;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#39465c;}
.crumb .now{color:var(--text-2);}

/* ---------- Hero ---------- */
.hero{position:relative;margin-top:26px;border-radius:24px;overflow:hidden;border:1px solid var(--line);background:var(--bg-1);}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.55;}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(104deg, rgba(6,11,22,.96) 0%, rgba(6,11,22,.88) 48%, rgba(6,11,22,.76) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;gap:40px;grid-template-columns:minmax(0,7fr) minmax(0,5fr);padding:60px 52px;}
.hero-copy h1{font-size:clamp(32px,4.4vw,52px);margin:16px 0 18px;}
.hero-sub{color:var(--text-2);font-size:17px;max-width:52ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 26px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:var(--text-3);}
.hero-meta li{display:flex;align-items:center;gap:8px;}
.hero-meta li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);opacity:.8;}

/* ---------- 玻璃面板 ---------- */
.glass-panel{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:26px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  box-shadow:var(--shadow-card);
}
.panel-title{font-size:13px;color:var(--text-3);letter-spacing:.05em;margin-bottom:18px;}
.panel-row{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06);}
.panel-row:last-of-type{border-bottom:0;}
.panel-row span{color:var(--text-2);font-size:14px;}
.panel-row strong{font-family:var(--font-mono);font-size:20px;color:var(--brand);font-weight:700;}
.progress{height:6px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:16px;}
.progress > i{display:block;height:100%;width:76%;border-radius:999px;background:linear-gradient(90deg,#22D3A6,#4CC9F0);}
.progress-note{display:flex;justify-content:space-between;font-size:12px;color:var(--text-3);margin-top:8px;}

/* ---------- 能力条带 ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.cap-item{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 22px;transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.cap-item:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.cap-item .cap-idx{font-family:var(--font-mono);font-size:12px;color:var(--ice);letter-spacing:.08em;}
.cap-item h3{font-size:19px;margin:12px 0 10px;}
.cap-item p{color:var(--text-2);font-size:15px;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:8px;}
.tl-item{position:relative;display:grid;grid-template-columns:78px minmax(0,1fr);gap:26px;padding-bottom:38px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item:not(:last-child)::before{
  content:"";position:absolute;left:38px;top:82px;bottom:2px;width:1px;
  background:linear-gradient(180deg, rgba(34,211,166,.5), rgba(255,255,255,.06));
}
.tl-num{
  width:78px;height:78px;border-radius:18px;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:24px;font-weight:700;color:var(--brand);
  background:var(--glass);border:1px solid var(--line);transition:border-color var(--ease),box-shadow var(--ease),color var(--ease);
}
.tl-item:hover .tl-num{border-color:var(--brand-line);box-shadow:0 0 0 1px rgba(34,211,166,.25), 0 12px 28px -14px rgba(34,211,166,.6);}
.tl-body{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);padding:24px 26px 22px;box-shadow:var(--shadow-card);transition:border-color var(--ease);}
.tl-item:hover .tl-body{border-color:var(--line-strong);}
.tl-body h3{font-size:19px;margin-bottom:10px;}
.tl-body p{color:var(--text-2);font-size:15px;}
.tl-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tl-points li{
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.05);
  border:1px solid var(--line);border-radius:6px;padding:4px 10px;
}
.tl-tag{margin-left:10px;font-size:12px;font-weight:600;color:var(--accent);background:rgba(245,165,36,.12);border:1px solid rgba(245,165,36,.3);border-radius:6px;padding:2px 8px;vertical-align:middle;}

/* ---------- 场景错位栅格 ---------- */
.scene-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:24px;}
.scene-card{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);transition:border-color var(--ease),transform var(--ease);}
.scene-card:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.scene-media{aspect-ratio:16/9;overflow:hidden;}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform 260ms ease-out;}
.scene-card:hover .scene-media img{transform:scale(1.03);}
.scene-body{padding:24px 26px 26px;}
.scene-body h3{font-size:19px;margin-bottom:10px;}
.scene-body p{color:var(--text-2);font-size:15px;}
.scene-list{display:flex;flex-direction:column;gap:16px;}
.scene-line{
  display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;align-items:start;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;
  transition:border-color var(--ease),transform var(--ease);
}
.scene-line:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.scene-line .mark{font-family:var(--font-mono);font-size:13px;color:var(--ice);padding-top:3px;}
.scene-line h3{font-size:17px;margin-bottom:6px;}
.scene-line p{color:var(--text-2);font-size:14.5px;}

/* ---------- 指标条带 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-panel);padding:30px 26px;}
.metric{text-align:left;padding-right:16px;}
.metric + .metric{border-left:1px solid var(--line);padding-left:22px;}
.metric .num{font-family:var(--font-mono);font-size:clamp(30px,3.6vw,44px);font-weight:700;color:var(--brand);line-height:1.1;}
.metric .num em{font-style:normal;font-size:18px;color:var(--text-2);margin-left:4px;}
.metric p{color:var(--text-2);font-size:14px;margin-top:8px;}

/* ---------- 图文区块 ---------- */
.split{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:28px;align-items:center;}
.split-media{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/9;transition:transform 260ms ease-out;}
.split-media:hover img{transform:scale(1.03);}
.split-list{display:flex;flex-direction:column;gap:14px;margin-top:22px;}
.split-list li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:12px;color:var(--text-2);font-size:15px;}
.split-list .k{font-family:var(--font-mono);font-size:13px;color:var(--brand);padding-top:4px;}
.split-side{display:flex;flex-direction:column;gap:14px;}
.side-card{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;}
.side-card h3{font-size:16px;margin-bottom:8px;}
.side-card p{color:var(--text-2);font-size:14px;}

/* ---------- FAQ ---------- */
.faq{margin-top:6px;}
.faq-item{border:1px solid var(--line);border-radius:14px;background:var(--bg-1);margin-bottom:12px;overflow:hidden;transition:border-color var(--ease);}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:19px 22px;display:flex;align-items:center;justify-content:space-between;gap:18px;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-family:var(--font-mono);font-size:20px;color:var(--brand);transition:transform var(--ease);line-height:1;}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-body{padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.8;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;border:1px solid var(--line);
  background:linear-gradient(120deg, rgba(34,211,166,.12), rgba(76,201,240,.06) 55%, rgba(11,20,36,.9));
  padding:52px 48px;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:32px;align-items:center;
}
.cta-band h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:12px;}
.cta-band p{color:var(--text-2);font-size:16px;max-width:46ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;border-top:1px solid var(--line);background:var(--bg-1);padding:56px 0 30px;}
.site-footer h3{color:var(--text);}
.footer-link{display:block;color:var(--text-2);font-size:14.5px;padding:5px 0;transition:color var(--ease),padding-left var(--ease);}
.footer-link:hover{color:var(--brand);padding-left:4px;}

/* ---------- 弹层 ---------- */
.modal-mask{position:fixed;inset:0;z-index:120;background:rgba(4,8,16,.74);display:none;align-items:center;justify-content:center;padding:20px;}
.modal-mask.open{display:flex;}
.modal{
  width:100%;max-width:520px;background:rgba(13,22,38,.96);border:1px solid var(--line-strong);
  border-radius:20px;padding:28px;box-shadow:0 30px 70px -30px rgba(0,0,0,.9);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  max-height:90vh;overflow-y:auto;
}
.modal h2{font-size:22px;margin-bottom:8px;}
.modal .modal-sub{color:var(--text-2);font-size:14px;margin-bottom:22px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px;}
.field input,.field textarea{
  width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:10px;color:var(--text);padding:12px 14px;min-height:46px;transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{min-height:88px;resize:vertical;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(34,211,166,.22);}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--text-2);margin:16px 0 20px;}
.check input{margin-top:3px;accent-color:#22D3A6;width:16px;height:16px;flex:0 0 16px;}
.modal-close{position:absolute;right:18px;top:18px;background:transparent;border:0;color:var(--text-3);font-size:22px;cursor:pointer;line-height:1;}
.modal-close:hover{color:var(--text);}
.modal-head{position:relative;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 600ms ease-out,transform 600ms ease-out;}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .hero-inner{padding:52px 42px;}
}
@media (max-width:1023px){
  .app-sidebar{display:none;}
  .app-topbar{display:flex;}
  .app-shell{padding-top:64px;}
  .hero-inner{grid-template-columns:1fr;padding:44px 30px;}
  .cap-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .scene-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:38px 30px;}
  .cta-actions{justify-content:flex-start;}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
  .metric + .metric{border-left:0;padding-left:0;}
  .metric:nth-child(even){border-left:1px solid var(--line);padding-left:20px;}
  .section{padding:68px 0;}
}
@media (max-width:767px){
  .container-x{padding:0 18px;}
  .hero{border-radius:20px;}
  .hero-inner{padding:34px 20px;}
  .hero-sub{font-size:16px;}
  .timeline .tl-item{grid-template-columns:56px minmax(0,1fr);gap:16px;}
  .tl-num{width:56px;height:56px;border-radius:14px;font-size:19px;}
  .tl-item:not(:last-child)::before{left:27px;top:62px;}
  .tl-body{padding:20px 18px;}
  .metrics{grid-template-columns:1fr;gap:20px;padding:24px 20px;}
  .metric:nth-child(even){border-left:0;padding-left:0;}
  .metric + .metric{border-top:1px solid var(--line);padding-top:18px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .cta-band{padding:32px 20px;border-radius:20px;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:520px){
  .cap-grid{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .modal{padding:22px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}