/* ===== Reset & 基座 ===== */
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  :root {
    --ink: #1a1d24;
    --ink-2: #3d4250;
    --ink-3: #6b7185;
    --line: #e4e7ee;
    --line-soft: #eef0f5;
    --bg: #fbfcfe;
    --bg-soft: #f4f6f9;
    --accent: #3C7AFF;
    --accent-2: #7FA8FF;
    --accent-dim: rgba(60, 122, 255, 0.07);
    --accent-line: rgba(60, 122, 255, 0.18);
    --warm: #F47E60;
    --warm-2: #FFA88E;
    --warm-dim: rgba(244, 126, 96, 0.10);
    --warm-line: rgba(244, 126, 96, 0.26);
    --radius: 10px;
    --radius-sm: 6px;
    --font-mono: "SFMono-Regular", "JetBrains Mono", "Fira Code", Consolas, monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
    --font-emoji: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", "Twemoji Mozilla", "EmojiOne Color", sans-serif;
    --maxw: 1120px;
  }
  html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; background: var(--bg); }
  body {
    font-family: var(--font-sans);
    color: var(--ink);
    background: transparent;
    line-height: 1.7;
    font-size: 15px;
    position: relative;
  }
  a { color: var(--accent); text-decoration: none; }
  a:hover { text-decoration: underline; }
  img { max-width: 100%; display: block; }
  .wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }
  .mono { font-family: var(--font-mono); }

  /* ===== Emoji 图标基座 ===== */
  .emoji {
    font-family: var(--font-emoji);
    font-style: normal;
    line-height: 1;
    display: inline-block;
    vertical-align: middle;
    -webkit-font-smoothing: auto;
  }

  /* ===== 背景层：多层渐变光晕融合 + 细网格 ===== */
  .bg-layer { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
  .bg-layer::before {
    content: "";
    position: absolute; inset: -12%;
    background:
      radial-gradient(900px 520px at 12% -5%, rgba(60,122,255,0.14), transparent 62%),
      radial-gradient(760px 460px at 92% 2%, rgba(244,126,96,0.10), transparent 60%),
      radial-gradient(900px 620px at 78% 40%, rgba(60,122,255,0.06), transparent 66%),
      radial-gradient(760px 520px at 6% 78%, rgba(96,160,255,0.08), transparent 66%),
      radial-gradient(700px 480px at 50% 100%, rgba(244,126,96,0.05), transparent 70%);
  }
  .bg-layer::after {
    content: "";
    position: absolute; inset: 0;
    background-image:
      linear-gradient(rgba(26,29,36,0.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(26,29,36,0.035) 1px, transparent 1px);
    background-size: 60px 60px;
    -webkit-mask-image: radial-gradient(ellipse 85% 65% at 50% 0%, #000 0%, transparent 78%);
    mask-image: radial-gradient(ellipse 85% 65% at 50% 0%, #000 0%, transparent 78%);
  }

  /* ===== 按钮 ===== */
  .btn {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 14px; font-weight: 560; line-height: 1;
    padding: 12px 20px; border-radius: 8px;
    border: 1px solid transparent; cursor: pointer;
    transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
    white-space: nowrap;
  }
  .btn:hover { text-decoration: none; }
  .btn .emoji { font-size: 15px; }
  .btn-primary {
    color: #fff;
    background: linear-gradient(135deg, #3C7AFF 0%, #5B8DFF 100%);
    box-shadow: 0 8px 20px -10px rgba(60,122,255,0.85), inset 0 1px 0 rgba(255,255,255,0.22);
  }
  .btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 26px -10px rgba(60,122,255,0.95), inset 0 1px 0 rgba(255,255,255,0.25); }
  .btn-ghost {
    color: var(--ink-2); background: rgba(255,255,255,0.72);
    border-color: var(--line);
    box-shadow: 0 1px 2px rgba(26,29,36,0.04);
    backdrop-filter: blur(6px);
  }
  .btn-ghost:hover { border-color: var(--accent-line); color: var(--accent); background: #fff; transform: translateY(-1px); }
  .btn-sm { padding: 8px 14px; font-size: 12.5px; border-radius: 7px; }
  .btn-sm .emoji { font-size: 13px; }

  /* ===== 顶栏 ===== */
  .topbar {
    position: sticky; top: 0; z-index: 50;
    background: rgba(251, 252, 254, 0.84);
    backdrop-filter: blur(14px) saturate(140%);
    border-bottom: 1px solid var(--line);
  }
  .topbar::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(60,122,255,0.35) 35%, rgba(244,126,96,0.30) 75%, transparent);
    opacity: .8;
  }
  .topbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 58px; gap: 16px; }
  .logo { display: flex; align-items: center; gap: 10px; font-weight: 650; font-size: 15px; letter-spacing: -0.01em; color: var(--ink); }
  .logo:hover { text-decoration: none; }

  /* ===== Logo 图片 ===== */
  .logo-img {
    width: 26px; height: 26px; border-radius: 7px; display: block;
    box-shadow: 0 4px 12px -6px rgba(60,122,255,0.9);
    flex-shrink: 0;
  }
  .logo-img.sm { width: 22px; height: 22px; border-radius: 6px; }

  .topbar-right { display: flex; align-items: center; gap: 10px; }
  .nav { display: flex; gap: 2px; }
  .nav a {
    font-size: 13px; color: var(--ink-3); padding: 6px 10px; border-radius: var(--radius-sm);
    transition: color .18s, background .18s;
  }
  .nav a:hover { color: var(--ink); background: var(--bg-soft); text-decoration: none; }
  @media (max-width: 940px) { .nav { display: none; } }

  /* ===== 首屏 ===== */
  .hero { padding: 44px 0 40px; position: relative; overflow: hidden; }
  .hero::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(60,122,255,0.30) 32%, rgba(244,126,96,0.26) 72%, transparent);
  }
  .hero .glow { position: absolute; border-radius: 50%; filter: blur(70px); pointer-events: none; z-index: 0; }
  .hero .g1 { width: 340px; height: 340px; background: rgba(60,122,255,0.18); top: -90px; left: -70px; animation: float1 16s ease-in-out infinite; }
  .hero .g2 { width: 300px; height: 300px; background: rgba(244,126,96,0.16); bottom: -120px; right: 4%; animation: float2 20s ease-in-out infinite; }
  @keyframes float1 { 50% { transform: translate(40px, 28px) scale(1.08); } }
  @keyframes float2 { 50% { transform: translate(-32px, -24px) scale(1.1); } }

  .hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 40px; align-items: center; }
  @media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; gap: 30px; } }

  .eyebrow {
    font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
    text-transform: uppercase; color: var(--accent); margin-bottom: 12px;
    display: flex; align-items: center; gap: 8px;
  }
  .eyebrow .pulse {
    width: 6px; height: 6px; border-radius: 50%; background: var(--warm);
    box-shadow: 0 0 0 0 rgba(244,126,96,0.55);
    animation: pulse-warm 2.4s ease-out infinite;
    flex-shrink: 0;
  }
  @keyframes pulse-warm { 70% { box-shadow: 0 0 0 8px rgba(244,126,96,0); } 100% { box-shadow: 0 0 0 0 rgba(244,126,96,0); } }
  .eyebrow::before { content: ""; width: 18px; height: 1px; background: var(--accent); flex-shrink: 0; }
  .hero strong {
    font-size: clamp(24px, 40vw, 36px); line-height: 1.5; letter-spacing: -0.025em;
    font-weight: 650; color: var(--ink); margin-bottom: 20px;
  }
  .hero h1 {
    font-size: clamp(30px, 4.2vw, 44px); line-height: 1.2; letter-spacing: -0.025em;
    font-weight: 650; color: var(--ink); margin-bottom: 10px;
  }
  .hero h1 .hl { color: var(--accent); display: inline-flex; align-items: center; gap: 4px; }
  .hero h1 .h1-emoji {
    font-size: 0.72em;
    transform: translateY(-1px);
    animation: twinkle 3.6s ease-in-out infinite;
  }
  @keyframes twinkle { 50% { opacity: .55; transform: translateY(-1px) scale(0.9); } }
  .hero-lead { font-size: 15.5px; color: var(--ink-2); max-width: 520px; margin-bottom: 20px; line-height: 1.78; }

  .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }

  .hero-meta { display: flex; flex-wrap: wrap; gap: 10px 20px; font-size: 12.5px; color: var(--ink-3); align-items: center; }
  .hero-meta strong { color: var(--ink); font-weight: 600; font-family: var(--font-mono); font-size: 13px; }
  .hero-meta strong.warm { color: var(--warm); }
  .hero-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: #c9cfdd; }

  /* 代码面板 */
  .code-panel {
    position: relative;
    background: #10141c; border-radius: var(--radius); overflow: hidden;
    font-family: var(--font-mono); font-size: 12.5px; line-height: 1.8;
    border: 1px solid #1e2530;
    box-shadow:
      0 30px 70px -32px rgba(16,20,28,0.55),
      0 0 70px -22px rgba(60,122,255,0.40);
  }
  .code-panel::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(60,122,255,0.9), rgba(244,126,96,0.7), transparent);
  }
  .code-bar {
    display: flex; align-items: center; gap: 7px; padding: 10px 14px;
    background: #151a23; border-bottom: 1px solid #1e2530;
  }
  .code-bar .d { width: 8px; height: 8px; border-radius: 50%; background: #2a3140; }
  .code-bar .d:first-child { background: #3C7AFF; box-shadow: 0 0 10px rgba(60,122,255,0.9); }
  .code-bar .file { margin-left: auto; color: #4d5668; font-size: 11px; letter-spacing: 0.03em; }
  .code-bar .live {
    font-size: 10px; color: var(--warm-2); border: 1px solid rgba(244,126,96,0.42);
    padding: 1px 7px; border-radius: 20px; background: rgba(244,126,96,0.12);
    letter-spacing: 0.06em; margin-left: 10px;
  }
  .code-body { padding: 18px 18px 20px; overflow-x: auto; color: #a8b3c5; }
  .code-body .ln { display: block; white-space: pre; }
  .code-body .c { color: #4e5a6e; }
  .code-body .k { color: #3C7AFF; }
  .code-body .s { color: #8fbf9f; }
  .code-body .n { color: #c9a86b; }
  .code-body .fn { color: #9db8e8; }
  .code-out {
    position: relative;
    margin-top: 14px; padding: 12px 14px 12px 16px; border-radius: var(--radius-sm);
    background: #0b0f15; border: 1px solid #1a2029;
    font-size: 12px; color: #7e8a9e; line-height: 1.85;
  }
  .code-out::before {
    content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; border-radius: 2px;
    background: linear-gradient(180deg, var(--accent), var(--warm));
  }
  .code-out .tag { color: #F47E60; font-weight: 600; }
  .code-out .val { color: #c3cddd; }

  /* ===== 通用 Section（行距减半 + 层次） ===== */
  .section { padding: 32px 0; position: relative; }
  .section::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(60,122,255,0.26) 30%, rgba(244,126,96,0.22) 70%, transparent);
  }
  .section--alt {
    background: linear-gradient(180deg, rgba(255,255,255,0.90) 0%, rgba(248,250,253,0.66) 100%);
    box-shadow:
      inset 0 1px 0 rgba(255,255,255,0.9),
      inset 0 -1px 0 rgba(228,231,238,0.55);
  }
  .sec-head { margin-bottom: 22px; }

  .sec-tag { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
  .sec-icon {
    width: 36px; height: 36px; border-radius: 10px;
    display: grid; place-items: center;
    background: linear-gradient(145deg, rgba(60,122,255,0.13), rgba(60,122,255,0.02));
    border: 1px solid var(--accent-line);
    box-shadow: 0 1px 2px rgba(60,122,255,0.10), inset 0 1px 0 rgba(255,255,255,0.7);
    flex-shrink: 0; position: relative;
  }
  .sec-icon::after {
    content: ""; position: absolute; right: -3px; top: -3px;
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--warm); border: 1.5px solid #fff;
    box-shadow: 0 0 0 1px rgba(244,126,96,0.35);
  }
  .sec-icon .emoji { font-size: 18px; }
  .kicker {
    font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
    text-transform: uppercase; color: var(--accent);
  }
  .sec-head h2 { font-size: clamp(22px, 2.8vw, 28px); letter-spacing: -0.02em; font-weight: 650; margin-bottom: 8px; }
  .sec-head p { color: var(--ink-3); font-size: 14.5px; max-width: 620px; }

  /* ===== 介绍 ===== */
  .intro-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 28px; }
  @media (max-width: 800px) { .intro-grid { grid-template-columns: 1fr; gap: 22px; } }
  .intro-text p { color: var(--ink-2); margin-bottom: 12px; font-size: 14.5px; }
  .intro-text p:last-child { margin-bottom: 0; }
  .intro-text strong { color: var(--ink); font-weight: 620; }
  .facts {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
    background: var(--line); border: 1px solid var(--line); border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 1px 2px rgba(26,29,36,0.04), 0 10px 26px -22px rgba(60,122,255,0.5);
  }
  .fact { background: #fff; padding: 16px 14px; transition: background .2s; }
  .fact:hover { background: #fcfdff; }
  .fact .num {
    font-family: var(--font-mono); font-size: 22px; font-weight: 650; letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--ink) 25%, var(--accent) 125%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
    transition: background .25s;
  }
  .fact:hover .num {
    background: linear-gradient(135deg, var(--ink) 10%, var(--warm) 120%);
    -webkit-background-clip: text; background-clip: text;
  }
  .fact .num em { font-style: normal; }
  .fact .lab { font-size: 12px; color: var(--ink-3); margin-top: 4px; display: flex; align-items: center; gap: 6px; }
  .fact .lab::before {
    content: ""; width: 5px; height: 5px; border-radius: 50%;
    background: var(--warm); opacity: .85; flex-shrink: 0;
  }

  /* ===== 核心功能 ===== */
  .func-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
  @media (max-width: 900px) { .func-grid { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 560px) { .func-grid { grid-template-columns: 1fr; } }
  .func-card {
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
    padding: 20px 18px; transition: border-color .2s, box-shadow .2s, transform .2s;
    position: relative; overflow: hidden;
    box-shadow: 0 1px 2px rgba(26,29,36,0.04), 0 6px 16px -22px rgba(60,122,255,0.4);
  }
  .func-card::after {
    content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent) 40%, var(--warm) 78%, transparent);
    opacity: 0; transition: opacity .28s;
  }
  .func-card:hover {
    border-color: var(--accent-line);
    box-shadow: 0 10px 30px -18px rgba(60,122,255,0.45), 0 2px 6px rgba(26,29,36,0.05);
    transform: translateY(-2px);
  }
  .func-card:hover::after { opacity: 1; }
  .func-card .f-icon {
    width: 34px; height: 34px; border-radius: 9px; margin-bottom: 12px;
    display: grid; place-items: center;
    background: var(--accent-dim);
    border: 1px solid rgba(60,122,255,0.12);
    transition: background .2s, border-color .2s;
  }
  .func-card:hover .f-icon { background: var(--warm-dim); border-color: var(--warm-line); }
  .func-card .f-icon .emoji { font-size: 17px; }
  .func-card .idx {
    position: absolute; top: 20px; right: 18px;
    font-family: var(--font-mono); font-size: 11px; color: #c3cad8;
    letter-spacing: 0.04em; transition: color .2s;
  }
  .func-card:hover .idx { color: var(--warm); }
  .func-card h3 { font-size: 15px; font-weight: 620; margin-bottom: 8px; letter-spacing: -0.01em; }
  .func-card p { font-size: 13px; color: var(--ink-3); line-height: 1.7; }
  .func-card .spec {
    margin-top: 12px; padding-top: 10px; border-top: 1px solid var(--line-soft);
    font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-2);
    display: flex; flex-wrap: wrap; gap: 8px 14px;
  }
  .func-card .spec span::before { content: "› "; color: var(--accent); }

  /* ===== 选择理由 ===== */
  .why-list { border-top: 1px solid var(--line); }
  .why-item {
    display: grid; grid-template-columns: 230px 1fr; gap: 28px;
    padding: 18px 18px; border-bottom: 1px solid var(--line);
    border-radius: var(--radius-sm);
    transition: background .2s, box-shadow .2s;
  }
  .why-item:hover {
    background: #fff;
    box-shadow: 0 1px 2px rgba(26,29,36,0.04), 0 8px 22px -22px rgba(60,122,255,0.5);
  }
  @media (max-width: 700px) { .why-item { grid-template-columns: 1fr; gap: 8px; padding-left: 0; padding-right: 0; } }
  .why-item .why-label {
    font-family: var(--font-mono); font-size: 12px; color: var(--accent);
    letter-spacing: 0.03em;
  }
  .why-item .why-label strong {
    display: block; font-family: var(--font-sans); font-size: 15px;
    color: var(--ink); font-weight: 620; margin-top: 4px; letter-spacing: -0.01em;
  }
  .why-item .why-desc { font-size: 13.5px; color: var(--ink-2); line-height: 1.75; }
  .why-item .why-desc em {
    font-style: normal; font-family: var(--font-mono); font-size: 12px;
    color: var(--warm); background: var(--warm-dim);
    padding: 1px 5px; border-radius: 3px; border: 1px solid var(--warm-line);
  }

  /* ===== 应用场景 ===== */
  .scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
  @media (max-width: 900px) { .scene-grid { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 480px) { .scene-grid { grid-template-columns: 1fr; } }
  .scene {
    background: #fff; border: 1px solid var(--line-soft);
    border-radius: var(--radius-sm); padding: 16px 15px;
    transition: border-color .2s, box-shadow .2s, transform .2s;
    position: relative; overflow: hidden;
    box-shadow: 0 1px 2px rgba(26,29,36,0.03);
  }
  .scene::before {
    content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--warm));
    opacity: 0; transition: opacity .25s;
  }
  .scene:hover {
    border-color: var(--warm-line);
    box-shadow: 0 10px 24px -20px rgba(244,126,96,0.7), 0 2px 6px rgba(26,29,36,0.04);
    transform: translateY(-2px);
  }
  .scene:hover::before { opacity: 1; }
  .scene .s-idx {
    font-family: var(--font-mono); font-size: 10px; color: #c3cad8;
    letter-spacing: 0.06em; margin-bottom: 6px; transition: color .2s;
  }
  .scene:hover .s-idx { color: var(--warm); }
  .scene h3 { font-size: 13.5px; font-weight: 620; margin-bottom: 5px; }
  .scene p { font-size: 12.5px; color: var(--ink-3); line-height: 1.65; }

  /* ===== 使用方法 ===== */
  .steps {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
    border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
    background: #fff;
    box-shadow: 0 1px 2px rgba(26,29,36,0.04), 0 10px 26px -24px rgba(60,122,255,0.5);
  }
  @media (max-width: 800px) { .steps { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 480px) { .steps { grid-template-columns: 1fr; } }
  .step { padding: 18px 16px; border-right: 1px solid var(--line); position: relative; transition: background .2s; }
  .step:last-child { border-right: none; }
  .step:hover { background: #fcfdff; }
  .step::before {
    content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
    background: linear-gradient(180deg, var(--accent), var(--warm));
    opacity: 0; transition: opacity .25s;
  }
  .step:hover::before { opacity: 1; }
  @media (max-width: 800px) {
    .step { border-bottom: 1px solid var(--line); }
    .step:nth-child(2n) { border-right: none; }
    .step:last-child { border-bottom: none; }
  }
  .step .sn { font-family: var(--font-mono); font-size: 11px; color: var(--accent); margin-bottom: 8px; }
  .step h3 { font-size: 13.5px; font-weight: 620; margin-bottom: 5px; }
  .step p { font-size: 12.5px; color: var(--ink-3); line-height: 1.65; }
  .step code {
    font-family: var(--font-mono); font-size: 11px; background: var(--bg-soft);
    padding: 1px 5px; border-radius: 3px; color: var(--ink-2);
    border: 1px solid var(--line-soft);
  }

  /* ===== FAQ ===== */
  .faq-list { border-top: 1px solid var(--line); }
  .faq-item { border-bottom: 1px solid var(--line); }
  .faq-item summary {
    padding: 14px 0; font-size: 14px; font-weight: 560; cursor: pointer;
    display: flex; align-items: center; gap: 12px; list-style: none;
    color: var(--ink); transition: color .15s;
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary::before {
    content: "?";
    font-family: var(--font-mono); font-size: 10px; font-weight: 700;
    width: 18px; height: 18px; border-radius: 4px;
    display: grid; place-items: center; flex-shrink: 0;
    background: var(--accent-dim); color: var(--accent);
    border: 1px solid rgba(60,122,255,0.12);
    transition: background .2s, color .2s, border-color .2s;
  }
  .faq-item summary::after {
    content: "+"; margin-left: auto; color: var(--ink-3);
    font-size: 16px; line-height: 1; font-weight: 400;
    transition: transform .22s, color .22s;
    flex-shrink: 0;
  }
  .faq-item[open] summary::before {
    background: var(--warm-dim); color: var(--warm); border-color: var(--warm-line);
  }
  .faq-item[open] summary::after { transform: rotate(45deg); color: var(--warm); }
  .faq-item summary:hover { color: var(--accent); }
  .faq-item .faq-a {
    padding: 0 0 16px 30px; font-size: 13.5px; color: var(--ink-2); line-height: 1.78;
    animation: fadeIn .22s ease;
  }
  @keyframes fadeIn { from { opacity: 0; transform: translateY(-4px); } }
  .faq-item .faq-a code {
    font-family: var(--font-mono); font-size: 12px; background: var(--bg-soft);
    padding: 1px 5px; border-radius: 3px; color: var(--ink-2);
    border: 1px solid var(--line-soft);
  }

  /* ===== 资讯 ===== */
  .news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
  @media (max-width: 680px) { .news-grid { grid-template-columns: 1fr; } }
  .news-card {
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
    padding: 18px; transition: border-color .2s, box-shadow .2s, transform .2s;
    position: relative; overflow: hidden;
    box-shadow: 0 1px 2px rgba(26,29,36,0.04), 0 6px 16px -22px rgba(60,122,255,0.4);
  }
  .news-card::before {
    content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
    background: linear-gradient(180deg, var(--accent), var(--warm));
    opacity: 0; transition: opacity .25s;
  }
  .news-card:hover {
    border-color: var(--accent-line);
    box-shadow: 0 10px 26px -20px rgba(60,122,255,0.6), 0 2px 6px rgba(26,29,36,0.05);
    transform: translateY(-2px);
  }
  .news-card:hover::before { opacity: 1; }
  .news-card .date { font-family: var(--font-mono); font-size: 11px; color: var(--warm); margin-bottom: 6px; }
  .news-card h3 { font-size: 14px; font-weight: 620; line-height: 1.5; margin-bottom: 6px; }
  .news-card p { font-size: 12.5px; color: var(--ink-3); line-height: 1.68; }

  /* ===== 底部 ===== */
  .footer {
    padding: 26px 0 34px; border-top: 1px solid var(--line);
    font-size: 12px; color: var(--ink-3);
    background: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.85) 100%);
  }
  .footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; align-items: center; }
  .footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
  .footer-links a { color: var(--ink-3); }
  .footer-links a:hover { color: var(--accent); }
  .footer-brand { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
  .footer-brand strong { color: var(--ink); font-size: 13px; }

  /* ===== 无障碍 / 细节 ===== */
  :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
  ::selection { background: rgba(60,122,255,0.15); }
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition: none !important; animation: none !important; }
  }