@import url('https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@400;500;600;700&family=Sora:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ============================================================
   北京万物寰辰科技有限责任公司 — 科技感静态站点样式（增强版）
   深色主题 / 霓虹光效 / 玻璃拟态 / 粒子背景 / 3D 交互 / 响应式
   ============================================================ */

:root {
  --bg: #060a16;
  --bg-2: #0a1020;
  --panel: rgba(18, 26, 48, 0.55);
  --panel-solid: #0e1528;
  --line: rgba(94, 234, 255, 0.14);
  --text: #e8f0ff;
  --text-dim: #9bb0d0;
  --text-mute: #66789a;
  --cyan: #2ff3ff;
  --blue: #3a7bff;
  --purple: #a35bff;
  --amber: #ffb347;
  --grad: linear-gradient(120deg, #2ff3ff 0%, #3a7bff 45%, #a35bff 100%);
  --grad-soft: linear-gradient(120deg, rgba(47,243,255,.18), rgba(163,91,255,.18));
  --font-display: 'Chakra Petch', 'Sora', sans-serif;
  --font-body: 'Sora', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 60px rgba(0, 12, 40, 0.5);
  --maxw: 1200px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
  cursor: default;
}

/* 背景层：渐变光晕（最底） */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(900px 600px at 80% -10%, rgba(58,123,255,.20), transparent 60%),
    radial-gradient(700px 500px at 5% 10%, rgba(47,243,255,.14), transparent 55%),
    radial-gradient(800px 700px at 50% 120%, rgba(163,91,255,.16), transparent 60%),
    var(--bg);
}
/* 背景层：网格（z -1） */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(94,234,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94,234,255,.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 85%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 85%);
}
/* 背景层：颗粒噪点（z -1 之上，内容之下） */
.grain {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
/* 全局粒子画布 */
#bg-canvas { position: fixed; inset: 0; z-index: -2; pointer-events: none; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }

/* ---------- 滚动进度条 ---------- */
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0%; z-index: 200;
  background: var(--grad); box-shadow: 0 0 12px rgba(47,243,255,.7); transition: width .1s linear; }

/* ---------- 自定义光标光晕 ---------- */
.cursor-glow { position: fixed; top: 0; left: 0; width: 26px; height: 26px; border-radius: 50%;
  background: radial-gradient(circle, rgba(47,243,255,.55), transparent 70%);
  pointer-events: none; z-index: 300; transform: translate(-50%, -50%); mix-blend-mode: screen;
  transition: width .2s, height .2s, background .2s; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: rgba(6, 10, 22, 0.5);
  border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s;
}
.nav.scrolled { background: rgba(6, 10, 22, 0.85); border-bottom-color: var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .5px; }
.brand .logo {
  width: 30px; height: 30px; border-radius: 8px; background: var(--grad);
  box-shadow: 0 0 18px rgba(47,243,255,.5); position: relative; flex: none;
  animation: spin 8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.brand .logo::after { content: ""; position: absolute; inset: 6px; border: 2px solid rgba(6,10,22,.85); border-radius: 4px; }
.brand b { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  font-size: 1.18rem; font-family: var(--font-display); letter-spacing: 1px; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  position: relative; padding: 8px 14px; border-radius: 8px; color: var(--text-dim);
  font-size: .95rem; transition: color .2s, background .2s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px; height: 2px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); background: rgba(47,243,255,.06); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-cta {
  padding: 9px 18px !important; color: #04121f !important; background: var(--grad);
  font-weight: 700; border-radius: 999px !important; box-shadow: 0 6px 22px rgba(47,243,255,.35);
}
.nav-cta::after { display: none; }
.nav-cta:hover { filter: brightness(1.08); }

.hamburger { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 10px;
  background: transparent; cursor: pointer; flex-direction: column; gap: 5px; align-items: center; justify-content: center; }
.hamburger span { width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 13px 26px; border-radius: 999px;
  font-weight: 700; font-size: .98rem; cursor: pointer; border: none; transition: .25s; position: relative; overflow: hidden;
}
.btn-primary { background: var(--grad); color: #04121f; box-shadow: 0 8px 28px rgba(47,243,255,.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(47,243,255,.55); }
.btn-ghost { background: rgba(255,255,255,.04); color: var(--text); border: 1px solid var(--line); }
.btn-ghost:hover { background: rgba(47,243,255,.1); border-color: rgba(47,243,255,.45); transform: translateY(-2px); }

/* ---------- 区块 ---------- */
section { padding: 90px 0; position: relative; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 54px; }
.eyebrow {
  display: inline-block; font-family: var(--font-mono); font-size: .78rem; letter-spacing: 3px; text-transform: uppercase;
  color: var(--cyan); padding: 5px 14px; border: 1px solid var(--line); border-radius: 999px;
  background: rgba(47,243,255,.06); margin-bottom: 18px; position: relative;
}
.eyebrow::before { content: "▍"; color: var(--cyan); margin-right: 4px; }
h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: .5px; }
h2.title { font-size: clamp(1.6rem, 4.5vw, 2.6rem); line-height: 1.25; font-weight: 700; }
h2.title .accent { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.section-head p { color: var(--text-dim); margin-top: 14px; font-size: 1.02rem; }

/* ---------- HERO ---------- */
.hero { padding: 150px 0 100px; text-align: center; position: relative; overflow: hidden; }
.hero::before { /* 透视网格地面 */
  content: ""; position: absolute; left: -20%; right: -20%; bottom: -10%; height: 55%;
  background-image: linear-gradient(rgba(47,243,255,.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47,243,255,.12) 1px, transparent 1px);
  background-size: 44px 44px;
  transform: perspective(420px) rotateX(62deg); transform-origin: bottom;
  mask-image: linear-gradient(to top, #000, transparent); -webkit-mask-image: linear-gradient(to top, #000, transparent);
  opacity: .5; animation: gridmove 16s linear infinite; pointer-events: none;
}
@keyframes gridmove { to { background-position: 0 44px; } }
.hero::after { /* 旋转光环 */
  content: ""; position: absolute; top: 8%; left: 50%; width: 520px; height: 520px;
  transform: translateX(-50%); border-radius: 50%;
  background: conic-gradient(from 0deg, transparent, rgba(47,243,255,.18), transparent 30%, rgba(163,91,255,.18), transparent 60%);
  filter: blur(40px); opacity: .5; animation: spin 24s linear infinite; pointer-events: none; z-index: -1;
}
.hero .badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 16px; border-radius: 999px;
  border: 1px solid var(--line); background: rgba(47,243,255,.06); color: var(--text-dim);
  font-size: .85rem; margin-bottom: 26px; position: relative; z-index: 2;
}
.hero .badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan); animation: pulse 1.6s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }
.hero h1 { font-size: clamp(2.1rem, 7vw, 4.2rem); line-height: 1.1; font-weight: 700;
  letter-spacing: 1px; margin-bottom: 20px; position: relative; z-index: 2; }
.hero h1 .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  position: relative; }
.hero h1 .grad::after { content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 40%;
  background: linear-gradient(120deg, rgba(47,243,255,.25), rgba(163,91,255,.25)); filter: blur(14px); z-index: -1; }
.hero p.lead { color: var(--text-dim); font-size: clamp(1rem, 2.4vw, 1.2rem); max-width: 640px;
  margin: 0 auto 36px; position: relative; z-index: 2; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; position: relative; z-index: 2; }
.hero-stats { display: flex; gap: 40px; justify-content: center; flex-wrap: wrap; margin-top: 64px; position: relative; z-index: 2; }
.hero-stats .stat b { display: block; font-family: var(--font-mono); font-size: clamp(1.8rem,5vw,2.8rem);
  font-weight: 700; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-stats .stat span { color: var(--text-mute); font-size: .9rem; }

/* 浮动 HUD 卡片 */
.float-card {
  position: absolute; border: 1px solid var(--line); border-radius: 14px; background: var(--panel);
  backdrop-filter: blur(8px); padding: 12px 16px; font-size: .8rem; color: var(--text-dim);
  box-shadow: var(--shadow); animation: floaty 6s ease-in-out infinite; z-index: 1;
  display: flex; align-items: center; gap: 8px;
}
.float-card .k { color: var(--cyan); font-family: var(--font-mono); font-weight: 700; }
.float-card::before { content: ""; position: absolute; top: 8px; left: 8px; width: 6px; height: 6px;
  border-top: 1px solid var(--cyan); border-left: 1px solid var(--cyan); }
.float-card::after { content: ""; position: absolute; bottom: 8px; right: 8px; width: 6px; height: 6px;
  border-bottom: 1px solid var(--cyan); border-right: 1px solid var(--cyan); }
@keyframes floaty { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-14px)} }
.fc1 { top: 22%; left: 4%; animation-delay: 0s; }
.fc2 { top: 30%; right: 5%; animation-delay: 1.5s; }
.fc3 { bottom: 16%; left: 8%; animation-delay: .8s; }
.fc4 { bottom: 22%; right: 9%; animation-delay: 2.2s; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; overflow: hidden; transition: transform .3s, border-color .3s, box-shadow .3s;
  transform-style: preserve-3d; will-change: transform;
}
.card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .4s; }
.card::after { /* HUD 角标 */
  content: ""; position: absolute; top: 10px; right: 10px; width: 14px; height: 14px;
  border-top: 1px solid rgba(47,243,255,.4); border-right: 1px solid rgba(47,243,255,.4);
  transition: .3s; }
.card:hover { border-color: rgba(47,243,255,.5); box-shadow: var(--shadow); }
.card:hover::before { transform: scaleX(1); }
.card:hover::after { width: 22px; height: 22px; border-color: var(--cyan); }
.card .ic {
  width: 52px; height: 52px; border-radius: 12px; display: grid; place-items: center;
  background: var(--grad-soft); border: 1px solid var(--line); margin-bottom: 18px; color: var(--cyan);
  transition: .3s;
}
.card:hover .ic { transform: translateZ(20px); box-shadow: 0 0 22px rgba(47,243,255,.4); }
.card .ic svg { width: 26px; height: 26px; }
.i { width: 1.4em; height: 1.4em; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; vertical-align: middle; }
.inline-ic { width: 1.1em; height: 1.1em; margin-right: 8px; color: var(--cyan); vertical-align: -2px; }
.card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.card p { color: var(--text-dim); font-size: .95rem; }

/* 流程 */
.step { display: flex; gap: 18px; align-items: flex-start; }
.step .num {
  flex: none; width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  font-weight: 900; background: var(--grad); color: #04121f; font-size: 1.1rem; font-family: var(--font-mono);
  box-shadow: 0 0 18px rgba(47,243,255,.4); color: #04121f;
}
.step .num svg { width: 24px; height: 24px; color: #04121f; }
.step h4 { font-size: 1.1rem; margin-bottom: 4px; }
.step p { color: var(--text-dim); font-size: .92rem; }

/* 技术栈标签 */
.tags { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.tag {
  padding: 9px 18px; border-radius: 999px; border: 1px solid var(--line); background: rgba(255,255,255,.03);
  color: var(--text-dim); font-size: .9rem; transition: .25s; font-family: var(--font-mono); font-size: .85rem;
}
.tag:hover { color: var(--text); border-color: rgba(47,243,255,.5); background: rgba(47,243,255,.08); transform: translateY(-3px); box-shadow: 0 8px 20px rgba(47,243,255,.2); }

/* 案例 */
.case {
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--panel);
  transition: .3s; position: relative;
}
.case:hover { transform: translateY(-6px); border-color: rgba(47,243,255,.5); box-shadow: var(--shadow); }
.case .thumb { height: 170px; position: relative; display: grid; place-items: center;
  background: linear-gradient(135deg, #0c1830, #131c3a); border-bottom: 1px solid var(--line); overflow: hidden; }
.case .thumb::before { content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(47,243,255,.18), transparent 70%); opacity: 0; transition: .3s; }
.case:hover .thumb::before { opacity: 1; }
.case .thumb .glyph { font-size: 3rem; filter: drop-shadow(0 0 16px rgba(47,243,255,.5)); color: var(--cyan);
  transition: transform .4s; }
.case:hover .thumb .glyph { transform: scale(1.12) rotate(-4deg); }
.case .thumb .glyph svg { width: 64px; height: 64px; }
.case .thumb .cat { position: absolute; top: 12px; left: 12px; font-size: .72rem; padding: 4px 10px;
  border-radius: 999px; background: rgba(6,10,22,.7); border: 1px solid var(--line); color: var(--cyan);
  font-family: var(--font-mono); }
.case .body { padding: 20px; }
.case .body h3 { font-size: 1.1rem; margin-bottom: 8px; }
.case .body p { color: var(--text-dim); font-size: .9rem; margin-bottom: 14px; }
.case .meta { display: flex; gap: 8px; flex-wrap: wrap; }
.case .meta span { font-size: .76rem; color: var(--text-mute); border: 1px solid var(--line);
  padding: 3px 9px; border-radius: 6px; font-family: var(--font-mono); }

/* 数据带 */
.stats-band { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(10,16,32,.5); }
.stats-band .grid { grid-template-columns: repeat(4, 1fr); text-align: center; }
.stats-band .b { padding: 14px; position: relative; }
.stats-band .b::after { content: ""; position: absolute; right: -11px; top: 20%; bottom: 20%; width: 1px;
  background: var(--line); }
.stats-band .b:last-child::after { display: none; }
.stats-band .b b { font-family: var(--font-mono); font-size: clamp(1.8rem,5vw,2.6rem); font-weight: 700;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; display: block; }
.stats-band .b span { color: var(--text-mute); font-size: .9rem; }

/* 评价 */
.review { font-style: normal; }
.review .quote { color: var(--text-dim); font-size: .98rem; margin-bottom: 18px; position: relative; padding-left: 26px; }
.review .quote::before { content: "“"; position: absolute; left: 0; top: -8px; font-size: 2.4rem;
  color: var(--cyan); font-family: var(--font-display); opacity: .5; }
.review .who { display: flex; align-items: center; gap: 12px; }
.review .who .av { width: 42px; height: 42px; border-radius: 50%; background: var(--grad); flex: none;
  box-shadow: 0 0 14px rgba(47,243,255,.4); }
.review .who b { display: block; font-size: .95rem; }
.review .who span { font-size: .8rem; color: var(--text-mute); }

/* CTA 区 */
.cta-box {
  text-align: center; border: 1px solid var(--line); border-radius: 24px; padding: 60px 30px;
  background: radial-gradient(600px 300px at 50% 0%, rgba(47,243,255,.12), transparent 70%), var(--panel);
  position: relative; overflow: hidden;
}
.cta-box::before { content: ""; position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 40%, rgba(47,243,255,.06) 50%, transparent 60%);
  background-size: 200% 100%; animation: shimmer 6s linear infinite; pointer-events: none; }
@keyframes shimmer { to { background-position: -200% 0; } }
.cta-box h2 { font-size: clamp(1.6rem,5vw,2.6rem); margin-bottom: 14px; font-weight: 700; }
.cta-box p { color: var(--text-dim); margin-bottom: 30px; max-width: 520px; margin-left: auto; margin-right: auto; }

/* FAQ */
.faq-item { border: 1px solid var(--line); border-radius: var(--radius-sm); margin-bottom: 14px;
  background: var(--panel); overflow: hidden; transition: border-color .3s; }
.faq-item.open { border-color: rgba(47,243,255,.4); }
.faq-q { width: 100%; text-align: left; padding: 18px 22px; background: transparent; border: none; color: var(--text);
  font-size: 1rem; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 12px;
  font-family: var(--font-display); }
.faq-q .plus { color: var(--cyan); font-size: 1.4rem; transition: transform .3s; flex: none; }
.faq-item.open .faq-q .plus { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a p { padding: 0 22px 18px; color: var(--text-dim); font-size: .94rem; }

/* 表单 */
.form-grid { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: .85rem; color: var(--text-dim); }
.field input, .field textarea, .field select {
  background: rgba(6,10,22,.55); border: 1px solid var(--line); border-radius: 10px; padding: 13px 15px;
  color: var(--text); font-size: .95rem; font-family: inherit; transition: .2s;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none;
  border-color: rgba(47,243,255,.6); box-shadow: 0 0 0 3px rgba(47,243,255,.12); }
.field textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: .82rem; color: var(--text-mute); }
.alert { display: none; padding: 12px 16px; border-radius: 10px; font-size: .9rem; margin-top: 6px; }
.alert.ok { display: block; background: rgba(47,243,255,.1); border: 1px solid rgba(47,243,255,.4); color: var(--cyan); }
.alert.err { display: block; background: rgba(255,80,80,.1); border: 1px solid rgba(255,80,80,.4); color: #ff9b9b; }

/* 关于页时间线 */
.timeline { border-left: 2px solid var(--line); margin-left: 8px; padding-left: 26px; }
.timeline .tl { position: relative; margin-bottom: 30px; }
.timeline .tl::before { content: ""; position: absolute; left: -34px; top: 4px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--grad); box-shadow: 0 0 12px rgba(47,243,255,.6); }
.timeline .tl .yr { color: var(--cyan); font-weight: 700; font-size: .9rem; font-family: var(--font-mono); }
.timeline .tl h4 { font-size: 1.05rem; margin: 4px 0; }
.timeline .tl p { color: var(--text-dim); font-size: .92rem; }

/* 客户跑马灯 */
.marquee { overflow: hidden; position: relative; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee-track { display: flex; gap: 26px; width: max-content; animation: scrollx 28s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes scrollx { to { transform: translateX(-50%); } }
.logo-pill { flex: none; padding: 14px 26px; border: 1px solid var(--line); border-radius: 12px;
  background: var(--panel); font-family: var(--font-mono); font-size: .95rem; color: var(--text-dim);
  white-space: nowrap; display: flex; align-items: center; gap: 10px; transition: .3s; }
.logo-pill:hover { color: var(--text); border-color: rgba(47,243,255,.5); }
.logo-pill svg { width: 20px; height: 20px; color: var(--cyan); }

/* 案例分页 */
.case-pager { margin-top: 40px; display: flex; flex-direction: column; align-items: center; gap: 14px; }
.case-info { color: var(--text-mute); font-size: .85rem; font-family: var(--font-mono); letter-spacing: .5px; }
.pagination { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.pagination button { min-width: 42px; height: 42px; padding: 0 14px; border-radius: 10px;
  border: 1px solid var(--line); background: rgba(255,255,255,.03); color: var(--text-dim);
  font-family: var(--font-mono); font-size: .95rem; cursor: pointer; transition: .25s; }
.pagination button:hover:not(:disabled):not(.active) { color: var(--text); border-color: rgba(47,243,255,.5);
  background: rgba(47,243,255,.08); transform: translateY(-2px); }
.pagination button.active { background: var(--grad); color: #04121f; border-color: transparent; font-weight: 700;
  box-shadow: 0 6px 20px rgba(47,243,255,.4); }
.pagination button:disabled { opacity: .35; cursor: not-allowed; }

/* 页脚 */
footer { border-top: 1px solid var(--line); padding: 56px 0 30px; background: rgba(8,12,24,.6); }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 30px; margin-bottom: 40px; }
.foot-grid p { color: var(--text-dim); font-size: .92rem; margin-top: 14px; max-width: 300px; }
.foot-col h4 { font-size: .95rem; margin-bottom: 14px; color: var(--text); font-family: var(--font-display); }
.foot-col a { display: block; color: var(--text-dim); font-size: .9rem; padding: 5px 0; transition: color .2s; }
.foot-col a:hover { color: var(--cyan); }
.foot-bottom { border-top: 1px solid var(--line); padding-top: 22px; display: flex; justify-content: space-between;
  flex-wrap: wrap; gap: 10px; color: var(--text-mute); font-size: .82rem; }

/* 滚动揭示 */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .stats-band .grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .stats-band .b::after { display: none; }
}
@media (max-width: 760px) {
  .nav-links { position: fixed; top: 66px; left: 0; right: 0; flex-direction: column; align-items: stretch;
    gap: 4px; padding: 16px 22px 26px; background: rgba(6,10,22,.97); border-bottom: 1px solid var(--line);
    transform: translateY(-130%); transition: transform .35s ease; backdrop-filter: blur(14px); }
  .nav-links.show { transform: translateY(0); }
  .nav-links a { padding: 13px 14px; font-size: 1rem; border-radius: 10px; }
  .nav-cta { text-align: center; margin-top: 6px; }
  .hamburger { display: flex; }
  .float-card { display: none; }
  .hero::after { width: 320px; height: 320px; }
  section { padding: 64px 0; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 26px; }
  .hero { padding: 120px 0 70px; }
  .cursor-glow { display: none; }
}
@media (max-width: 420px) {
  .container { padding: 0 16px; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; justify-content: center; }
  .foot-grid { grid-template-columns: 1fr; }
}

/* 尊重无障碍：减少动画 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}