/* ============================================================
   AIPCB.cc — 深圳市灵馨科技有限公司 · 高端 PCB 制造
   Design System v2.0
   深色工业科技风 · 电路板绿 · 高端制造
   ============================================================ */

:root {
  /* 色彩 */
  --bg-0: #070d0f;
  --bg-1: #0b1417;
  --bg-2: #101d21;
  --bg-3: #16272c;
  --bg-glass: rgba(16, 29, 33, 0.72);
  --line-1: #1e3338;
  --line-2: #2a454b;
  --txt-0: #e8f4f2;
  --txt-1: #b7c9c7;
  --txt-2: #7d9693;
  --accent: #2ee6a8;        /* 电路板绿 */
  --accent-2: #00b374;
  --accent-dim: rgba(46, 230, 168, 0.12);
  --accent-glow: rgba(46, 230, 168, 0.45);
  --gold: #f5b841;
  --blue: #4da8ff;
  --red: #ff6b6b;
  --purple: #b07cff;
  --copper: #d98b5f;

  /* 字体 */
  --font-sans: "Inter", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", "Consolas", "SF Mono", monospace;

  /* 圆角与阴影 */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 22px;
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-2: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-3: 0 16px 48px rgba(0, 0, 0, 0.5);

  /* 布局 */
  --nav-h: 64px;
  --container: 1220px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-0);
  color: var(--txt-0);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; transition: color 0.15s; }
a:hover { color: #7bf3c8; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; color: var(--txt-0); }
::selection { background: rgba(46, 230, 168, 0.3); }

/* 背景光效 + 电路纹理 */
body::before {
  content: "";
  position: fixed; inset: 0;
  background:
    radial-gradient(1100px 520px at 88% -12%, rgba(46, 230, 168, 0.09), transparent 62%),
    radial-gradient(900px 460px at -8% 32%, rgba(77, 168, 255, 0.07), transparent 58%),
    linear-gradient(var(--bg-0), var(--bg-0));
  pointer-events: none;
  z-index: -1;
}
.trace-bg {
  background-image:
    linear-gradient(rgba(46, 230, 168, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 230, 168, 0.05) 1px, transparent 1px);
  background-size: 34px 34px;
}

/* ---------- 布局 ---------- */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 92px 0; }
.section-tight { padding: 56px 0; }
.section-alt { background: var(--bg-1); border-top: 1px solid var(--line-1); border-bottom: 1px solid var(--line-1); }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-h);
  background: rgba(7, 13, 15, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-1);
}
.nav-inner { max-width: var(--container); margin: 0 auto; padding: 0 24px; height: 100%; display: flex; align-items: center; gap: 22px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; letter-spacing: 0.2px; color: var(--txt-0); flex-shrink: 0; }
.logo:hover { color: var(--txt-0); }
.logo-mark {
  width: 34px; height: 34px; border-radius: 9px;
  display: grid; place-items: center;
  overflow: hidden;
}
.logo-mark svg { width: 34px; height: 34px; display: block; }
.logo b { color: var(--accent); }
.logo small { display: block; font-size: 10.5px; font-weight: 600; color: var(--txt-2); letter-spacing: 0.6px; margin-top: -3px; }
.nav-links { display: flex; gap: 2px; margin-left: 6px; flex: 1; }
.nav-links a { color: var(--txt-1); padding: 8px 13px; border-radius: 8px; font-size: 14.5px; font-weight: 500; white-space: nowrap; }
.nav-links a:hover { color: var(--txt-0); background: var(--bg-2); }
.nav-links a.active { color: var(--accent); background: var(--accent-dim); }
.nav-cta { display: flex; gap: 10px; align-items: center; }
.nav-burger { display: none; background: none; border: 1px solid var(--line-2); color: var(--txt-0); border-radius: 8px; padding: 8px 11px; font-size: 16px; line-height: 1; }
.nav-mobile {
  display: none; position: fixed; top: var(--nav-h); left: 0; right: 0; z-index: 99;
  background: var(--bg-1); border-bottom: 1px solid var(--line-1); padding: 12px 20px 20px;
  flex-direction: column; gap: 6px; max-height: calc(100vh - var(--nav-h)); overflow-y: auto;
}
.nav-mobile.open { display: flex; }
.nav-mobile a { color: var(--txt-1); padding: 11px 12px; border-radius: 8px; font-weight: 500; }
.nav-mobile a:hover { background: var(--bg-2); color: var(--txt-0); }
.nav-mobile a.active { color: var(--accent); background: var(--accent-dim); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px; border-radius: 9px;
  font-weight: 600; font-size: 14.5px; line-height: 1.4;
  border: 1px solid transparent; transition: all 0.18s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn svg { width: 17px; height: 17px; }
.btn-primary { background: linear-gradient(135deg, var(--accent-2), #17b98a); color: #03211a; box-shadow: 0 4px 16px rgba(46, 230, 168, 0.25); }
.btn-primary:hover { box-shadow: 0 6px 22px var(--accent-glow); color: #03211a; filter: brightness(1.08); }
.btn-ghost { border-color: var(--line-2); color: var(--txt-0); background: rgba(22, 39, 44, 0.4); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }
.btn-sm { padding: 7px 14px; font-size: 13px; border-radius: 7px; }
.btn-lg { padding: 14px 30px; font-size: 16px; border-radius: 11px; }
.btn-block { width: 100%; justify-content: center; }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }

/* ---------- 排版 ---------- */
h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; }
.hero h1 { font-size: clamp(32px, 4.6vw, 54px); font-weight: 800; }
h2.sec-title { font-size: clamp(25px, 3.2vw, 36px); }
h3.card-title { font-size: 18px; }
.section-head { text-align: center; max-width: 780px; margin: 0 auto 54px; }
.section-head .eyebrow { color: var(--accent); font-weight: 700; letter-spacing: 3px; font-size: 12.5px; text-transform: uppercase; margin-bottom: 12px; display: block; }
.section-head p.lead { color: var(--txt-1); font-size: 16.5px; margin-top: 14px; }
.section-head.left { text-align: left; margin-left: 0; }
.eyebrow { color: var(--accent); font-weight: 700; letter-spacing: 3px; font-size: 12.5px; text-transform: uppercase; }
.grad-text { background: linear-gradient(92deg, #2ee6a8 0%, #4da8ff 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* 双语标题（中文 + 英文小字，参考行业官网风格） */
.bi { display: block; }
.bi .bi-en { display: block; font-size: 11.5px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; color: var(--txt-2); margin-top: 6px; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 96px 0 84px; overflow: hidden; }
.hero::after {
  content: ""; position: absolute; left: 50%; top: 30px; transform: translateX(-50%);
  width: 1000px; height: 460px; pointer-events: none;
  background: radial-gradient(ellipse at center, rgba(46, 230, 168, 0.13), transparent 66%);
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.12fr 0.88fr; gap: 56px; align-items: center; }
.hero .lead { color: var(--txt-1); font-size: 17.5px; margin: 22px 0 16px; max-width: 580px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin: 30px 0 8px; }
.hero-badges { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.hero-chip { display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; border-radius: 999px; background: var(--bg-2); border: 1px solid var(--line-1); color: var(--txt-1); font-size: 13px; font-weight: 600; }
.hero-chip svg { width: 15px; height: 15px; color: var(--accent); }

/* 电路板可视化 */
.board-visual { position: relative; }
.board-canvas-wrap { background: #04150e; border: 1px solid #123a2c; border-radius: var(--r-lg); padding: 14px; box-shadow: var(--shadow-3), 0 0 70px rgba(46, 230, 168, 0.09); }
.board-canvas-wrap svg { width: 100%; height: auto; border-radius: 10px; display: block; }
.board-float {
  position: absolute; background: var(--bg-glass); backdrop-filter: blur(10px);
  border: 1px solid var(--line-2); border-radius: 12px; padding: 10px 14px;
  box-shadow: var(--shadow-2); font-size: 12.5px; z-index: 2;
}
.board-float b { color: var(--accent); font-family: var(--font-mono); font-size: 13px; }
.board-float .lbl { color: var(--txt-2); font-size: 11px; display: block; }
.f1 { top: -14px; right: 20px; }
.f2 { bottom: -14px; left: 24px; }

/* 内页头 */
.page-hero { padding: 70px 0 46px; border-bottom: 1px solid var(--line-1); background: linear-gradient(180deg, var(--bg-1), var(--bg-0)); }
.page-hero h1 { font-size: clamp(26px, 3.6vw, 42px); }
.page-hero .lead { color: var(--txt-1); font-size: 16.5px; margin-top: 14px; max-width: 760px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--bg-2); border: 1px solid var(--line-1); border-radius: var(--r-lg);
  padding: 26px; transition: all 0.2s; position: relative;
}
.card:hover { border-color: var(--line-2); transform: translateY(-3px); box-shadow: var(--shadow-2); }
.card.accent-border:hover { border-color: rgba(46, 230, 168, 0.5); }
.card-icon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--accent-dim); color: var(--accent); margin-bottom: 18px;
}
.card-icon svg { width: 24px; height: 24px; }
.card-icon.blue { background: rgba(77, 168, 255, 0.12); color: var(--blue); }
.card-icon.gold { background: rgba(245, 184, 65, 0.12); color: var(--gold); }
.card-icon.purple { background: rgba(176, 124, 255, 0.12); color: var(--purple); }
.card-icon.copper { background: rgba(217, 139, 95, 0.13); color: var(--copper); }
.card p { color: var(--txt-1); font-size: 14px; margin-top: 10px; }
.card .card-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-weight: 600; font-size: 14px; color: var(--accent); }
.card .card-link svg { width: 15px; height: 15px; transition: transform 0.15s; }
.card:hover .card-link svg { transform: translateX(3px); }
.tag { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--bg-3); color: var(--txt-1); border: 1px solid var(--line-2); }
.tag.green { background: var(--accent-dim); color: var(--accent); border-color: rgba(46, 230, 168, 0.35); }
.tag.blue { background: rgba(77, 168, 255, 0.1); color: var(--blue); border-color: rgba(77, 168, 255, 0.3); }
.tag.gold { background: rgba(245, 184, 65, 0.1); color: var(--gold); border-color: rgba(245, 184, 65, 0.3); }
.tag.red { background: rgba(255, 107, 107, 0.1); color: var(--red); border-color: rgba(255, 107, 107, 0.3); }
.tag.copper { background: rgba(217, 139, 95, 0.1); color: var(--copper); border-color: rgba(217, 139, 95, 0.32); }

/* 网格 */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---------- 数据条 ---------- */
.stat-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line-1); border: 1px solid var(--line-1); border-radius: var(--r-lg); overflow: hidden; }
.stat-cell { background: var(--bg-2); padding: 28px 24px; text-align: center; }
.stat-cell .v { font-family: var(--font-mono); font-size: clamp(26px, 3vw, 36px); font-weight: 800; color: var(--accent); line-height: 1.1; }
.stat-cell .v small { font-size: 15px; font-weight: 700; margin-left: 2px; }
.stat-cell .k { color: var(--txt-2); font-size: 13.5px; margin-top: 8px; }

/* ---------- 产品卡（产品中心） ---------- */
.prod-card { display: flex; flex-direction: column; height: 100%; }
.prod-card .prod-head { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 14px; }
.prod-card .prod-icon { width: 48px; height: 48px; border-radius: 12px; background: var(--accent-dim); color: var(--accent); display: grid; place-items: center; flex-shrink: 0; }
.prod-card .prod-icon svg { width: 25px; height: 25px; }
.prod-card .prod-icon.blue { background: rgba(77, 168, 255, 0.12); color: var(--blue); }
.prod-card .prod-icon.gold { background: rgba(245, 184, 65, 0.12); color: var(--gold); }
.prod-card .prod-icon.purple { background: rgba(176, 124, 255, 0.12); color: var(--purple); }
.prod-card .prod-icon.copper { background: rgba(217, 139, 95, 0.13); color: var(--copper); }
.prod-card h3 { font-size: 17.5px; }
.prod-card .en { font-size: 11px; font-weight: 600; letter-spacing: 1.4px; text-transform: uppercase; color: var(--txt-2); margin-top: 4px; }
.prod-card ul.spec { list-style: none; padding: 0; margin: 14px 0 0; border-top: 1px dashed var(--line-1); padding-top: 14px; }
.prod-card ul.spec li { display: flex; gap: 10px; font-size: 13.5px; color: var(--txt-1); padding: 3px 0; }
.prod-card ul.spec li b { color: var(--txt-2); font-weight: 600; min-width: 66px; flex-shrink: 0; }
.prod-card .prod-apps { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 7px; }

/* ---------- 应用场景卡 ---------- */
.app-card { position: relative; overflow: hidden; }
.app-card .app-no { position: absolute; right: 18px; top: 12px; font-family: var(--font-mono); font-size: 34px; font-weight: 800; color: rgba(46, 230, 168, 0.09); line-height: 1; }
.app-card h3 { font-size: 17px; display: flex; align-items: center; gap: 10px; }
.app-card h3 svg { width: 20px; height: 20px; color: var(--accent); flex-shrink: 0; }
.app-card ul { list-style: none; padding: 0; margin-top: 14px; }
.app-card ul li { position: relative; padding-left: 18px; font-size: 13.5px; color: var(--txt-1); padding-bottom: 6px; }
.app-card ul li::before { content: ""; position: absolute; left: 2px; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); opacity: 0.7; }

/* ---------- 规格/能力表 ---------- */
.spec-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line-1); border-radius: var(--r-md); }
table.tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 520px; }
.tbl th { background: var(--bg-3); color: var(--txt-0); text-align: left; padding: 11px 14px; font-weight: 600; white-space: nowrap; border-bottom: 1px solid var(--line-2); }
.tbl td { padding: 10px 14px; border-bottom: 1px solid var(--line-1); color: var(--txt-1); }
.tbl tr:last-child td { border-bottom: none; }
.tbl tbody tr:hover td { background: rgba(46, 230, 168, 0.04); }
.tbl td.mono, .tbl th.mono { font-family: var(--font-mono); font-size: 12.5px; }
.tbl .num { text-align: right; font-family: var(--font-mono); }
.tbl td.k { color: var(--txt-2); width: 42%; }
.tbl td.v { color: var(--txt-0); font-weight: 600; }

/* ---------- 时间轴（发展历程） ---------- */
.timeline { position: relative; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(180deg, var(--accent), rgba(46, 230, 168, 0.08)); }
.tl-item { position: relative; padding-bottom: 26px; }
.tl-item::before { content: ""; position: absolute; left: -30px; top: 6px; width: 16px; height: 16px; border-radius: 50%; background: var(--bg-0); border: 2px solid var(--accent); }
.tl-item .tl-year { font-family: var(--font-mono); font-weight: 800; color: var(--accent); font-size: 15px; }
.tl-item b { display: block; margin: 2px 0 4px; font-size: 15px; }
.tl-item p { color: var(--txt-2); font-size: 13.5px; }

/* ---------- 认证墙 ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.cert-item { display: flex; align-items: center; gap: 12px; padding: 16px 18px; background: var(--bg-2); border: 1px solid var(--line-1); border-radius: var(--r-md); }
.cert-item svg { width: 26px; height: 26px; color: var(--gold); flex-shrink: 0; }
.cert-item b { font-size: 14px; display: block; }
.cert-item span { font-size: 12px; color: var(--txt-2); }

/* ---------- 工艺流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; }
.flow-step { background: var(--bg-2); border: 1px solid var(--line-1); border-radius: var(--r-md); padding: 16px 14px; position: relative; }
.flow-step .n { font-family: var(--font-mono); font-size: 11.5px; color: var(--accent); font-weight: 800; letter-spacing: 1px; }
.flow-step b { display: block; font-size: 14px; margin: 6px 0 4px; }
.flow-step span { font-size: 12.5px; color: var(--txt-2); }

/* ---------- 提示条 ---------- */
.alert { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: 11px; font-size: 14px; margin-top: 16px; border: 1px solid; }
.alert svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: 1px; }
.alert.info { background: rgba(77, 168, 255, 0.08); border-color: rgba(77, 168, 255, 0.3); color: #bcd9ff; }
.alert.warn { background: rgba(245, 184, 65, 0.08); border-color: rgba(245, 184, 65, 0.3); color: #ffe3a8; }
.alert.ok { background: rgba(46, 230, 168, 0.08); border-color: rgba(46, 230, 168, 0.3); color: #b7f5dc; }
.alert.err { background: rgba(255, 107, 107, 0.08); border-color: rgba(255, 107, 107, 0.3); color: #ffc9c9; }

/* ---------- 清单项 ---------- */
.check-item { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px dashed var(--line-1); align-items: flex-start; }
.check-item:last-child { border-bottom: none; }
.check-dot { width: 22px; height: 22px; border-radius: 7px; border: 2px solid var(--line-2); flex-shrink: 0; display: grid; place-items: center; margin-top: 1px; }
.check-dot.pass { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }
.check-dot.warn { background: rgba(245, 184, 65, 0.12); border-color: var(--gold); color: var(--gold); }
.check-dot.fail { background: rgba(255, 107, 107, 0.12); border-color: var(--red); color: var(--red); }
.check-dot svg { width: 13px; height: 13px; }
.check-item b { font-size: 14px; }
.check-item .detail { font-size: 13px; color: var(--txt-2); margin-top: 2px; }

/* ---------- 步骤 ---------- */
.steps { display: flex; gap: 8px; margin-bottom: 26px; flex-wrap: wrap; }
.step { flex: 1; min-width: 150px; padding: 12px 16px; border-radius: 11px; background: var(--bg-1); border: 1px solid var(--line-1); color: var(--txt-2); font-size: 13.5px; font-weight: 600; display: flex; gap: 10px; align-items: center; }
.step .n { width: 24px; height: 24px; border-radius: 8px; background: var(--bg-3); display: grid; place-items: center; font-size: 12px; font-weight: 800; flex-shrink: 0; }
.step.active { border-color: rgba(46, 230, 168, 0.5); color: var(--txt-0); background: var(--accent-dim); }
.step.active .n { background: var(--accent); color: #03211a; }
.step.done { border-color: var(--accent); color: var(--accent); }
.step.done .n { background: var(--accent); color: #03211a; }

/* ---------- 表单 ---------- */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--txt-1); margin-bottom: 7px; }
.field .hint { font-size: 12px; color: var(--txt-2); font-weight: 400; margin-left: 6px; }
.input, select.input, textarea.input {
  width: 100%; padding: 10px 13px; border-radius: 9px; border: 1px solid var(--line-2);
  background: var(--bg-1); color: var(--txt-0); font-size: 14.5px; outline: none; transition: border 0.15s;
}
.input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
textarea.input { min-height: 110px; resize: vertical; }
.input-mono { font-family: var(--font-mono); font-size: 13.5px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }

/* 面板 */
.panel { background: var(--bg-2); border: 1px solid var(--line-1); border-radius: var(--r-lg); padding: 26px; }
.panel-title { font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.panel-title .idx { width: 26px; height: 26px; border-radius: 8px; background: var(--accent-dim); color: var(--accent); display: grid; place-items: center; font-size: 13px; font-weight: 800; }

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: var(--bg-1); }
::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: #3a5a61; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line-1); background: var(--bg-1); padding: 58px 0 30px; margin-top: 90px; }
.footer-grid { display: grid; grid-template-columns: 2.1fr 1fr 1fr 1fr; gap: 36px; }
.footer h5 { font-size: 14px; margin-bottom: 14px; letter-spacing: 0.5px; }
.footer a.flink { display: block; color: var(--txt-2); font-size: 13.5px; padding: 4px 0; }
.footer a.flink:hover { color: var(--accent); }
.footer .fdesc { color: var(--txt-2); font-size: 13.5px; margin-top: 14px; max-width: 360px; }
.footer .fcontact { margin-top: 16px; font-size: 13.5px; color: var(--txt-1); }
.footer .fcontact div { padding: 2px 0; }
.footer .fcontact b { color: var(--txt-2); font-weight: 600; margin-right: 6px; }
.footer-bottom { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line-1); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--txt-2); font-size: 12.5px; }
.footer-bottom a { color: var(--txt-2); }
.footer-bottom a:hover { color: var(--accent); }

/* ---------- 面包屑 ---------- */
.crumbs { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--txt-2); margin-bottom: 16px; flex-wrap: wrap; }
.crumbs a { color: var(--txt-2); }
.crumbs a:hover { color: var(--accent); }
.crumbs svg { width: 13px; height: 13px; }

/* ---------- 内容页 ---------- */
.prose { color: var(--txt-1); font-size: 15px; max-width: 880px; }
.prose h2 { color: var(--txt-0); font-size: 24px; margin: 44px 0 16px; }
.prose h3 { color: var(--txt-0); font-size: 18px; margin: 30px 0 12px; }
.prose p { margin-bottom: 14px; }
.prose ul { padding-left: 22px; margin-bottom: 14px; }
.prose li { margin-bottom: 7px; }
.prose code { font-family: var(--font-mono); font-size: 13px; background: var(--bg-3); padding: 2px 7px; border-radius: 5px; color: var(--accent); }
.prose strong { color: var(--txt-0); }

/* ---------- 特性行 ---------- */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; padding: 34px 0; }
.feature-row.reverse .feature-media { order: -1; }
.feature-media { border-radius: var(--r-xl); overflow: hidden; border: 1px solid var(--line-1); background: var(--bg-2); padding: 18px; }
.feature-media svg { width: 100%; height: auto; border-radius: 10px; }
.feature-copy h3 { font-size: 25px; margin-bottom: 14px; }
.feature-copy p { color: var(--txt-1); margin-bottom: 14px; }
.feature-list { list-style: none; padding: 0; }
.feature-list li { display: flex; gap: 10px; padding: 7px 0; color: var(--txt-1); font-size: 14.5px; }
.feature-list svg { width: 18px; height: 18px; color: var(--accent); flex-shrink: 0; margin-top: 3px; }

/* ---------- CTA 横幅 ---------- */
.cta-banner { position: relative; border-radius: var(--r-xl); overflow: hidden; padding: 52px 46px; background: linear-gradient(120deg, #0d2b22, #0b1f2e); border: 1px solid rgba(46, 230, 168, 0.25); text-align: center; }
.cta-banner h2 { font-size: clamp(23px, 3vw, 33px); margin-bottom: 12px; }
.cta-banner p { color: var(--txt-1); max-width: 600px; margin: 0 auto 26px; }
.cta-banner .cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- 新闻列表 ---------- */
.news-card { display: flex; gap: 20px; align-items: flex-start; }
.news-date { flex-shrink: 0; width: 74px; text-align: center; background: var(--bg-3); border: 1px solid var(--line-2); border-radius: var(--r-md); padding: 10px 6px; }
.news-date b { display: block; font-family: var(--font-mono); font-size: 20px; color: var(--accent); line-height: 1.1; }
.news-date span { font-size: 11.5px; color: var(--txt-2); }
.news-card h3 { font-size: 16.5px; margin-bottom: 8px; }
.news-card p { color: var(--txt-2); font-size: 13.5px; }

/* ---------- 分段控制 ---------- */
.seg { display: inline-flex; background: var(--bg-1); border: 1px solid var(--line-1); border-radius: 9px; padding: 3px; gap: 3px; flex-wrap: wrap; }
.seg button { border: none; background: none; color: var(--txt-2); padding: 7px 15px; border-radius: 7px; font-size: 13.5px; font-weight: 600; }
.seg button.active { background: var(--accent); color: #03211a; }

/* ---------- 动画 ---------- */
.fade-in { animation: fadeIn 0.4s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- 徽标 ---------- */
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; padding: 4px 11px; border-radius: 999px; }
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.badge.ready { background: var(--accent-dim); color: var(--accent); }
.badge.busy { background: rgba(245, 184, 65, 0.1); color: var(--gold); }

/* ---------- 语言切换 ---------- */
.lang-select {
  background: var(--bg-2); color: var(--txt-0);
  border: 1px solid var(--line-2); border-radius: 7px;
  padding: 6px 8px; font-size: 13px; font-weight: 600;
  outline: none; cursor: pointer;
}
.lang-select:focus { border-color: var(--accent); }
.lang-select option { background: var(--bg-1); color: var(--txt-0); }
.lang-hint {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  z-index: 200; display: flex; align-items: center; gap: 12px;
  background: var(--bg-glass); backdrop-filter: blur(10px);
  border: 1px solid rgba(46, 230, 168, 0.35); border-radius: 12px;
  padding: 10px 16px; font-size: 13.5px; color: var(--txt-1);
  box-shadow: var(--shadow-2); animation: fadeIn .3s ease;
}
.lang-hint a { font-weight: 700; }
.lang-hint-x { background: none; border: none; color: var(--txt-2); font-size: 14px; padding: 2px 4px; }
.lang-hint-x:hover { color: var(--txt-0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .nav-links a { padding: 8px 10px; font-size: 14px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stat-band { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .feature-row { grid-template-columns: 1fr; gap: 34px; }
  .feature-row.reverse .feature-media { order: 0; }
  .spec-grid { grid-template-columns: 1fr; }
}
@media (max-width: 960px) {
  .nav-links, .nav-cta .btn-primary { display: none; }
  .nav-burger { display: inline-flex; }
  .nav-inner { justify-content: space-between; }
}
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 62px 0; }
  .field-row, .field-row-3 { grid-template-columns: 1fr; }
  .cta-banner { padding: 38px 22px; }
}
@media (max-width: 520px) {
  .grid-4 { grid-template-columns: 1fr; }
  .stat-band { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 62px 0; }
  .news-card { flex-direction: column; gap: 12px; }
}