/* ============================================================
   翁颂电子 官网 — 设计系统 main.css
   深色科技风 · 移动优先 · 全站共用
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 色板 */
  --bg: #060b18;
  --bg-soft: #0a1226;
  --panel: #0d1830;
  --panel-2: #101d3a;
  --blue: #2e7cff;
  --cyan: #00d4ff;
  --grad: linear-gradient(135deg, #2e7cff, #00d4ff);
  --grad-soft: linear-gradient(135deg, rgba(46, 124, 255, .18), rgba(0, 212, 255, .18));
  --text: #e6edf7;
  --text-2: #8b9bb4;
  --text-3: #5b6b86;
  --line: rgba(255, 255, 255, .08);
  --line-2: rgba(255, 255, 255, .14);
  --glow: rgba(46, 124, 255, .22);
  --glow-cyan: rgba(0, 212, 255, .18);

  /* 字体 */
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Consolas, "Roboto Mono", Menlo, monospace;

  /* 布局 */
  --container: 1200px;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 22px;
  --nav-h: 72px;

  /* 动效 */
  --ease: cubic-bezier(.22, .61, .36, 1);
  --t: .28s;

  /* 阴影 */
  --shadow: 0 8px 30px rgba(2, 8, 24, .45);
  --shadow-glow: 0 10px 40px rgba(46, 124, 255, .22);
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 全局科技光晕底 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(60% 45% at 50% 0%, rgba(46, 124, 255, .10), transparent 60%),
    radial-gradient(40% 40% at 85% 20%, rgba(0, 212, 255, .06), transparent 60%),
    var(--bg);
  pointer-events: none;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }

::selection { background: rgba(46, 124, 255, .35); color: #fff; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: #1c2c4d; border-radius: 8px; }
::-webkit-scrollbar-track { background: transparent; }

/* ---------- 3. 排版 ---------- */
h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; letter-spacing: .5px; }

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.mono { font-family: var(--font-mono); }

/* ---------- 4. 布局容器 ---------- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.section { padding: 96px 0; position: relative; }
.section-tight { padding: 64px 0; }

/* 区块标题 */
.section-head { max-width: 760px; margin: 0 auto 56px; text-align: center; }
.section-head.left { text-align: left; margin-left: 0; }

.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 16px; font-weight: 600;
}
.kicker::before {
  content: ""; width: 26px; height: 2px;
  background: var(--grad); border-radius: 2px;
}
.section-head.left .kicker::before { order: -1; }

.section-title { font-size: clamp(28px, 4vw, 42px); margin-bottom: 16px; }
.section-sub { color: var(--text-2); font-size: 17px; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 999px; font-size: 15px; font-weight: 600;
  border: 1px solid transparent; transition: all var(--t) var(--ease);
  white-space: nowrap; line-height: 1.4;
}
.btn svg { width: 17px; height: 17px; flex-shrink: 0; }

.btn-primary {
  background: var(--grad); color: #fff;
  box-shadow: 0 6px 24px rgba(46, 124, 255, .35);
  position: relative; overflow: hidden;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 32px rgba(46, 124, 255, .5); }
.btn-primary::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, .25), transparent 70%);
  transform: translateX(-120%); transition: transform .7s var(--ease);
}
.btn-primary:hover::after { transform: translateX(120%); }

.btn-ghost {
  background: rgba(255, 255, 255, .03); color: var(--text);
  border-color: var(--line-2); backdrop-filter: blur(6px);
}
.btn-ghost:hover { border-color: var(--blue); color: #fff; transform: translateY(-2px); }

.btn-sm { padding: 9px 20px; font-size: 14px; }

/* ---------- 6. 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center;
  transition: all .3s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(6, 11, 24, .82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--line);
  box-shadow: 0 6px 30px rgba(2, 8, 24, .4);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }

.logo { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 19px; }
.logo-mark {
  width: 40px; height: 40px; border-radius: 11px; flex-shrink: 0;
  background: var(--grad); display: grid; place-items: center;
  box-shadow: 0 4px 16px rgba(46, 124, 255, .4);
}
.logo-mark svg { width: 22px; height: 22px; }
.logo-mark img { width: 100%; height: 100%; object-fit: cover; border-radius: inherit; display: block; }
.logo .logo-sub { display: block; font-size: 11px; color: var(--text-2); font-weight: 500; letter-spacing: 1px; }

.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-link {
  position: relative; padding: 8px 14px; font-size: 15px; color: var(--text-2);
  transition: color var(--t); border-radius: 8px; font-weight: 500;
}
.nav-link:hover, .nav-link.active { color: #fff; }
.nav-link.active { color: #fff; }
.nav-link.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px;
  height: 2px; border-radius: 2px; background: var(--grad);
}

.nav-cta { margin-left: 14px; }

.nav-toggle {
  display: none; width: 44px; height: 44px; border-radius: 10px;
  background: rgba(255, 255, 255, .04); border: 1px solid var(--line);
  align-items: center; justify-content: center; flex-direction: column; gap: 5px;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: all .3s var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 手机抽屉菜单 */
@media (max-width: 1024px) {
  .nav-toggle { display: inline-flex; }
  .nav-menu {
    position: fixed; top: 0; right: -320px; width: 300px; height: 100vh;
    background: rgba(8, 14, 30, .97); backdrop-filter: blur(20px);
    flex-direction: column; align-items: stretch; justify-content: flex-start;
    padding: 96px 28px 40px; gap: 8px;
    transition: right .35s var(--ease); z-index: 99;
    border-left: 1px solid var(--line); overflow-y: auto;
  }
  .nav-menu.open { right: 0; }
  .nav-menu .nav-link { padding: 14px 16px; font-size: 17px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav-menu .nav-link.active::after { display: none; }
  .nav-menu .nav-link.active { color: var(--cyan); }
  .nav-cta { margin: 18px 0 0; }
  .nav-backdrop {
    position: fixed; inset: 0; background: rgba(2, 6, 16, .6);
    opacity: 0; visibility: hidden; transition: all .3s; z-index: 98;
  }
  .nav-backdrop.show { opacity: 1; visibility: visible; }
}

/* ---------- 7. Hero（首页首屏） ---------- */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + 40px) 0 80px;
  overflow: hidden;
}
/* 网格背景 */
.hero-grid {
  position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(rgba(46, 124, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 124, 255, .06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(80% 70% at 50% 30%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(80% 70% at 50% 30%, #000 30%, transparent 100%);
}
.hero-glow {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(42% 38% at 78% 30%, var(--glow-cyan), transparent 60%),
    radial-gradient(45% 40% at 20% 70%, var(--glow), transparent 60%);
  animation: pulseGlow 7s ease-in-out infinite alternate;
}
@keyframes pulseGlow { from { opacity: .7; } to { opacity: 1; } }

/* 漂浮光点 */
.hero-dots { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.dot {
  position: absolute; width: 4px; height: 4px; border-radius: 50%;
  background: var(--blue); opacity: .4; animation: floatUp linear infinite;
}
@keyframes floatUp {
  0% { transform: translateY(20vh); opacity: 0; }
  15% { opacity: .5; }
  100% { transform: translateY(-110vh); opacity: 0; }
}

.hero-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 999px; font-size: 13px;
  background: var(--grad-soft); border: 1px solid var(--line-2);
  color: var(--cyan); margin-bottom: 24px;
}
.hero-badge .dot-pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); position: relative; }
.hero-badge .dot-pulse::after {
  content: ""; position: absolute; inset: -4px; border-radius: 50%;
  border: 1px solid var(--cyan); animation: pulse 1.8s ease-out infinite;
}
@keyframes pulse { 0% { transform: scale(.5); opacity: 1; } 100% { transform: scale(1.6); opacity: 0; } }

.hero-title { font-size: clamp(34px, 5.4vw, 60px); font-weight: 800; line-height: 1.18; margin-bottom: 22px; letter-spacing: .5px; }
.hero-sub { font-size: 18px; color: var(--text-2); max-width: 560px; margin-bottom: 36px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }

.hero-trust { display: flex; gap: 28px; flex-wrap: wrap; color: var(--text-2); font-size: 14px; }
.hero-trust li { display: flex; align-items: center; gap: 8px; }
.hero-trust svg { width: 16px; height: 16px; color: var(--cyan); }

/* Hero 右侧可视化 */
.hero-visual { position: relative; }
.hero-window {
  position: relative; border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, .03);
  border: 1px solid var(--line-2);
  backdrop-filter: blur(14px); overflow: hidden;
  box-shadow: var(--shadow-glow);
}
.window-bar { display: flex; align-items: center; gap: 8px; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.window-bar i { width: 11px; height: 11px; border-radius: 50%; }
.window-bar i:nth-child(1) { background: #ff5f57; }
.window-bar i:nth-child(2) { background: #febc2e; }
.window-bar i:nth-child(3) { background: #28c840; }
.window-bar span { margin-left: auto; font-family: var(--font-mono); font-size: 12px; color: var(--text-3); }

.window-body { padding: 26px; }
.window-row { display: flex; align-items: center; gap: 12px; padding: 13px 14px; border-radius: var(--radius-sm); background: rgba(255,255,255,.03); margin-bottom: 10px; border: 1px solid var(--line); }
.window-row .bar { flex: 1; height: 8px; border-radius: 4px; background: rgba(255,255,255,.07); position: relative; overflow: hidden; }
.window-row .bar::after { content: ""; position: absolute; inset: 0; border-radius: 4px; background: var(--grad); width: var(--w, 70%); }
.window-row .val { font-family: var(--font-mono); font-size: 12px; color: var(--cyan); }
.window-row .ico { width: 34px; height: 34px; border-radius: 9px; background: var(--grad-soft); display: grid; place-items: center; flex-shrink: 0; }
.window-row .ico svg { width: 17px; height: 17px; color: var(--cyan); }

.hero-float {
  position: absolute; padding: 16px 18px; border-radius: var(--radius);
  background: rgba(13, 24, 48, .9); border: 1px solid var(--line-2);
  backdrop-filter: blur(12px); box-shadow: var(--shadow);
  display: flex; align-items: center; gap: 10px; font-size: 13px;
  animation: float 5s ease-in-out infinite;
}
.hero-float.f1 { top: -22px; right: -14px; }
.hero-float.f2 { bottom: -20px; left: -22px; animation-delay: 2.4s; }
.hero-float .ico { width: 36px; height: 36px; border-radius: 10px; background: var(--grad); display: grid; place-items: center; }
.hero-float .ico svg { width: 18px; height: 18px; }
.hero-float b { display: block; font-size: 15px; }
.hero-float small { color: var(--text-2); font-size: 12px; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

/* ---------- 8. 页面内页 Hero ---------- */
.page-hero {
  position: relative; padding: calc(var(--nav-h) + 70px) 0 60px; overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.page-hero .hero-grid { z-index: -1; }
.page-hero-title { font-size: clamp(30px, 4.6vw, 48px); font-weight: 800; margin-bottom: 14px; }
.page-hero-sub { color: var(--text-2); font-size: 17px; max-width: 640px; }
.breadcrumb { display: flex; align-items: center; gap: 8px; color: var(--text-3); font-size: 13px; margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb svg { width: 13px; height: 13px; }
.breadcrumb span { color: var(--text-2); }

/* ---------- 9. 玻璃卡片 ---------- */
.card {
  position: relative; border-radius: var(--radius);
  background: rgba(255, 255, 255, .035);
  border: 1px solid var(--line);
  backdrop-filter: blur(12px);
  transition: transform .35s var(--ease), border-color .35s, box-shadow .35s;
  overflow: hidden;
}
.card:hover { transform: translateY(-6px); border-color: rgba(46, 124, 255, .5); box-shadow: var(--shadow-glow); }

.card-hover-line::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--grad); transform: scaleX(0); transform-origin: left;
  transition: transform .4s var(--ease);
}
.card-hover-line:hover::before { transform: scaleX(1); }

/* ---------- 10. 数据条 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat {
  text-align: center; padding: 34px 20px; border-radius: var(--radius);
  background: rgba(255,255,255,.03); border: 1px solid var(--line);
  position: relative; overflow: hidden;
}
.stat::after {
  content: ""; position: absolute; inset: auto -20% -60% -20%; height: 80%;
  background: radial-gradient(50% 100% at 50% 100%, var(--glow), transparent 70%);
  opacity: .5; pointer-events: none;
}
.stat-num { font-family: var(--font-mono); font-size: clamp(34px, 4.5vw, 48px); font-weight: 700; line-height: 1.1; }
.stat-num em { font-style: normal; font-size: .55em; color: var(--cyan); vertical-align: super; margin-left: 2px; }
.stat-label { color: var(--text-2); font-size: 14px; margin-top: 10px; letter-spacing: 1px; }

/* ---------- 11. 产品卡片 ---------- */
.product-card { padding: 34px 28px; display: flex; flex-direction: column; height: 100%; }
.product-ico {
  width: 60px; height: 60px; border-radius: 15px; margin-bottom: 22px;
  background: var(--grad-soft); border: 1px solid var(--line-2);
  display: grid; place-items: center; transition: all .35s var(--ease);
}
.product-card:hover .product-ico { background: var(--grad); box-shadow: var(--shadow-glow); transform: scale(1.06); }
.product-ico svg { width: 28px; height: 28px; color: var(--cyan); transition: color .35s; }
.product-card:hover .product-ico svg { color: #fff; }
.product-name { font-size: 21px; margin-bottom: 10px; }
.product-desc { color: var(--text-2); font-size: 14.5px; margin-bottom: 20px; flex: 1; }
.product-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.tag {
  font-size: 12px; padding: 4px 11px; border-radius: 999px;
  background: rgba(255,255,255,.05); border: 1px solid var(--line-2); color: var(--text-2);
}
.product-link { display: inline-flex; align-items: center; gap: 6px; color: var(--cyan); font-size: 14.5px; font-weight: 600; }
.product-link svg { width: 15px; height: 15px; transition: transform .3s; }
.product-link:hover svg { transform: translateX(4px); }

/* ---------- 12. 特性网格（优势/功能） ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature {
  padding: 30px 26px; border-radius: var(--radius);
  background: rgba(255,255,255,.03); border: 1px solid var(--line);
  transition: all .35s var(--ease);
}
.feature:hover { border-color: rgba(0,212,255,.4); background: rgba(255,255,255,.045); transform: translateY(-4px); }
.feature-ico {
  width: 46px; height: 46px; border-radius: 12px; margin-bottom: 18px;
  background: var(--grad-soft); display: grid; place-items: center;
}
.feature-ico svg { width: 22px; height: 22px; color: var(--cyan); }
.feature h3 { font-size: 18px; margin-bottom: 8px; }
.feature p { color: var(--text-2); font-size: 14.5px; }

/* ---------- 13. 表单 ---------- */
.form-card { border-radius: var(--radius-lg); padding: 40px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-grid .full { grid-column: 1 / -1; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field label { font-size: 14px; color: var(--text-2); }
.field input, .field textarea, .field select {
  background: rgba(255,255,255,.04); border: 1px solid var(--line-2);
  border-radius: var(--radius-sm); padding: 13px 16px; color: var(--text); font-size: 15px;
  transition: border-color .3s, box-shadow .3s; width: 100%;
}
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238b9bb4' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(46,124,255,.15);
}
.field textarea { min-height: 120px; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: var(--text-3); }
.form-note { color: var(--text-3); font-size: 13px; margin-top: 14px; }
.form-success {
  display: none; align-items: center; gap: 10px; margin-top: 16px;
  padding: 14px 18px; border-radius: var(--radius-sm);
  background: rgba(0,212,255,.08); border: 1px solid rgba(0,212,255,.3); color: var(--cyan);
  font-size: 14px;
}
.form-success.show { display: flex; }

/* ---------- 14. 表格 ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--line); }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
thead { background: rgba(255,255,255,.04); }
th { padding: 16px 20px; text-align: left; color: var(--text); font-weight: 600; white-space: nowrap; }
td { padding: 15px 20px; border-top: 1px solid var(--line); color: var(--text-2); }
td:first-child { color: var(--text); font-weight: 500; }
tr:hover td { background: rgba(255,255,255,.02); }
th .ok, td .ok { color: var(--cyan); }
th .no, td .no { color: var(--text-3); }

/* ---------- 15. 时间线（关于页） ---------- */
.timeline { position: relative; max-width: 760px; margin: 0 auto; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--blue), var(--cyan)); opacity: .5; }
.timeline-item { position: relative; padding-bottom: 38px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: ""; position: absolute; left: -31px; top: 6px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--blue); box-shadow: 0 0 0 4px rgba(46,124,255,.15);
}
.timeline-year { font-family: var(--font-mono); color: var(--cyan); font-size: 14px; font-weight: 700; letter-spacing: 1px; }
.timeline-item h3 { font-size: 19px; margin: 6px 0 8px; }
.timeline-item p { color: var(--text-2); font-size: 15px; }

/* ---------- 16. FAQ ---------- */
.faq-item { border: 1px solid var(--line); border-radius: var(--radius-sm); margin-bottom: 14px; background: rgba(255,255,255,.025); overflow: hidden; }
.faq-q { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 22px; cursor: pointer; font-weight: 600; font-size: 15.5px; }
.faq-q svg { width: 18px; height: 18px; color: var(--cyan); transition: transform .3s; flex-shrink: 0; }
.faq-item.open .faq-q svg { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s var(--ease); color: var(--text-2); font-size: 15px; }
.faq-a div { padding: 0 22px 20px; }

/* ---------- 18. 步骤 / 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.step { position: relative; padding: 30px 24px; border-radius: var(--radius); background: rgba(255,255,255,.03); border: 1px solid var(--line); }
.step-num { font-family: var(--font-mono); font-size: 30px; font-weight: 700; color: transparent; -webkit-text-stroke: 1.5px var(--blue); margin-bottom: 14px; }
.step h3 { font-size: 17px; margin-bottom: 8px; }
.step p { color: var(--text-2); font-size: 14.5px; }

/* ---------- 19. 新闻 / 列表卡片 ---------- */
.news-card { display: block; padding: 26px 26px 22px; height: 100%; }
.news-date { font-family: var(--font-mono); font-size: 13px; color: var(--text-3); display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.news-date svg { width: 14px; height: 14px; }
.news-card h3 { font-size: 18px; margin-bottom: 10px; transition: color .3s; }
.news-card:hover h3 { color: var(--cyan); }
.news-card p { color: var(--text-2); font-size: 14.5px; }
.news-card .product-link { margin-top: 16px; }

/* 案例卡片 */
.case-card { padding: 30px 28px; height: 100%; }
.case-avatar {
  width: 56px; height: 56px; border-radius: 14px; margin-bottom: 18px;
  background: var(--grad-soft); border: 1px solid var(--line-2);
  display: grid; place-items: center; font-weight: 800; font-size: 20px; color: var(--cyan);
}
.case-industry { font-size: 12px; color: var(--cyan); letter-spacing: 1px; margin-bottom: 8px; }
.case-card h3 { font-size: 19px; margin-bottom: 8px; }
.case-card p { color: var(--text-2); font-size: 14.5px; margin-bottom: 18px; }
.case-stats { display: flex; gap: 18px; border-top: 1px solid var(--line); padding-top: 16px; }
.case-stats b { font-family: var(--font-mono); color: var(--cyan); font-size: 17px; }
.case-stats span { display: block; font-size: 12px; color: var(--text-3); }

/* ---------- 20. 页脚 ---------- */
.footer { border-top: 1px solid var(--line); background: rgba(4, 8, 18, .6); position: relative; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding: 64px 0 48px; }
.footer h4 { font-size: 15px; margin-bottom: 18px; letter-spacing: 1px; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: var(--text-2); font-size: 14.5px; transition: color .3s, padding-left .3s; }
.footer-links a:hover { color: var(--cyan); padding-left: 5px; }
.footer-about { color: var(--text-2); font-size: 14.5px; margin: 16px 0 20px; }
.footer-contact li { display: flex; align-items: center; gap: 10px; color: var(--text-2); font-size: 14.5px; margin-bottom: 12px; }
.footer-contact svg { width: 16px; height: 16px; color: var(--cyan); flex-shrink: 0; }
.footer-grid > div { min-width: 0; }
.footer-contact li { overflow-wrap: anywhere; }
.footer-qr { display: flex; align-items: center; gap: 16px; }
.qr-box { width: 88px; height: 88px; border-radius: 12px; background: #fff; display: grid; place-items: center; flex-shrink: 0; }
.qr-box svg { width: 56px; height: 56px; }
.footer-bottom { border-top: 1px solid var(--line); padding: 22px 0; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; color: var(--text-3); font-size: 13px; }
.footer-bottom a:hover { color: var(--cyan); }

/* ---------- 21. 动效（滚动进入） ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 22. 通用工具 ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.center { text-align: center; }
.mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; } .mt-40 { margin-top: 40px; } .mt-64 { margin-top: 64px; }
.mb-16 { margin-bottom: 16px; } .mb-24 { margin-bottom: 24px; } .mb-40 { margin-bottom: 40px; }
.text-2 { color: var(--text-2); }
.flex { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

/* CTA 区块 */
.cta-panel {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  padding: 64px 48px; text-align: center;
  background: linear-gradient(135deg, rgba(46,124,255,.14), rgba(0,212,255,.1));
  border: 1px solid var(--line-2);
}
.cta-panel::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(60% 90% at 50% 0%, rgba(46,124,255,.18), transparent 70%);
}
.cta-panel h2 { font-size: clamp(26px, 3.6vw, 38px); margin-bottom: 14px; }
.cta-panel p { color: var(--text-2); font-size: 17px; margin-bottom: 30px; }

/* 编号徽标（对比/功能序号） */
.idx-badge {
  font-family: var(--font-mono); font-size: 13px; color: var(--cyan);
  border: 1px solid rgba(0,212,255,.35); border-radius: 999px; padding: 3px 12px;
  background: rgba(0,212,255,.06); margin-bottom: 14px; display: inline-block;
}

/* 分割说明条 */
.callout {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 20px 24px; border-radius: var(--radius-sm);
  background: rgba(0,212,255,.05); border: 1px solid rgba(0,212,255,.25);
  color: var(--text-2); font-size: 15px;
}
.callout svg { width: 20px; height: 20px; color: var(--cyan); flex-shrink: 0; margin-top: 2px; }

/* ---------- 23. 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 60px; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  body { font-size: 15px; }
  .section { padding: 64px 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .form-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .hero-float.f1 { right: 6px; }
  .hero-float.f2 { left: 6px; }
  .cta-panel { padding: 44px 22px; }
  .form-card { padding: 26px 20px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 420px) {
  .grid-4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .hero-cta .btn { flex: 1; }
}