/* ============================================================================
   爱词元 · token.love  —  词元云计算 旗舰门户
   承接 ku0.com(coming)企业级 DNA:dark-first · 翡翠绿 · IBM Plex Mono
   在其之上升舱:编辑级留白 · 玻璃质感 · 分层光晕 · 招牌路由动效
   纯静态,无构建,无依赖
   ============================================================================ */

:root {
  color-scheme: dark;

  /* —— 深色底(深红黑,庄重,带极微暖) —— */
  --bg:        #0a0506;
  --bg-2:      #0d0708;
  --surface:   #140b0d;
  --surface-2: #190f11;
  --surface-3: #221517;
  --panel:     rgba(28, 16, 18, 0.66);
  --panel-line: rgba(255, 255, 255, 0.07);

  --ink:    #f6f3f2;
  --ink-2:  #d6cac8;
  --muted:  #a1908d;
  --muted-2:#6e5c5a;

  --line:        rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --hairline:    rgba(255, 255, 255, 0.05);

  /* —— 中国红:权威主色 —— */
  --accent:        #d4202a;
  --accent-bright: #ff5a5f;
  --accent-deep:   #a8141d;
  --accent-soft:   rgba(212, 32, 42, 0.10);
  --accent-glow:   rgba(212, 32, 42, 0.34);

  /* —— 金:点缀/收尾的第二色 —— */
  --teal: #e8b04b;
  /* —— 暖金:love/品牌点缀 —— */
  --love: #e8b04b;
  --love-soft: rgba(232, 176, 75, 0.14);

  --grad-brand: linear-gradient(135deg, #ff5a5f 0%, #d4202a 55%, #a8141d 100%);
  --grad-love:  linear-gradient(120deg, #ff5a5f 0%, #d4202a 45%, #e8b04b 115%);
  --grad-line:  linear-gradient(90deg, transparent, var(--line-strong), transparent);

  --radius:    14px;
  --radius-sm: 10px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --pill: 999px;

  /* 分层宽度:正文收敛、视觉块舒展 */
  --content: 1320px;
  --wide:    1440px;
  --narrow:  940px;
  --gutter: max(clamp(20px, 5vw, 56px), calc((100vw - var(--content)) / 2));

  /* 顶栏玻璃底(浅色主题会覆盖) */
  --header-bg: rgba(7,8,10,0.72);
  --btn-ghost-bg: rgba(255,255,255,0.03);
  --btn-ghost-bg-hover: rgba(255,255,255,0.07);

  /* 流体字阶(编辑级、克制) */
  --t-display: clamp(40px, 6vw, 76px);
  --t-h2:      clamp(28px, 3.6vw, 46px);
  --t-h3:      clamp(19px, 1.6vw, 23px);
  --t-lede:    clamp(17px, 1.5vw, 21px);
  --t-body:    16px;
  --t-sm:      14px;
  --t-xs:      12.5px;

  --font-sans: "Plus Jakarta Sans", "Inter", ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --ease:     cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft:cubic-bezier(0.4, 0, 0.2, 1);

  --shadow-card: 0 1px 0 rgba(255,255,255,0.03) inset, 0 24px 60px -28px rgba(0,0,0,0.8);
  --shadow-glow: 0 20px 70px -24px var(--accent-glow);
}

/* ============================================================================
   浅色主题 —— 翡翠绿信任色不变,底色翻白,层次靠浅灰 + 细线
   ============================================================================ */
[data-theme="light"] {
  color-scheme: light;

  --bg:        #fbf8f7;
  --bg-2:      #f5eeec;
  --surface:   #ffffff;
  --surface-2: #f8f1f0;
  --surface-3: #efe3e1;
  --panel:     rgba(255, 255, 255, 0.72);
  --panel-line: rgba(40, 12, 14, 0.08);

  --ink:    #1a0d0e;
  --ink-2:  #43302f;
  --muted:  #6f5856;
  --muted-2:#9a8482;

  --line:        rgba(40, 12, 14, 0.10);
  --line-strong: rgba(40, 12, 14, 0.16);
  --hairline:    rgba(40, 12, 14, 0.06);

  --accent:        #c1121f;
  --accent-bright: #a8141d;
  --accent-deep:   #d4202a;
  --accent-soft:   rgba(193, 18, 31, 0.09);
  --accent-glow:   rgba(193, 18, 31, 0.22);

  --teal: #b8860b;
  --love: #b8860b;
  --love-soft: rgba(184, 134, 11, 0.13);

  --grad-brand: linear-gradient(135deg, #d4202a 0%, #c1121f 55%, #a8141d 100%);
  --grad-love:  linear-gradient(120deg, #c1121f 0%, #d4202a 45%, #b8860b 115%);

  --header-bg: rgba(251, 248, 247, 0.80);
  --btn-ghost-bg: rgba(40, 12, 14, 0.03);
  --btn-ghost-bg-hover: rgba(40, 12, 14, 0.06);

  --shadow-card: 0 1px 0 rgba(255,255,255,0.6) inset, 0 22px 50px -30px rgba(26,13,14,0.26);
  --shadow-glow: 0 18px 60px -26px var(--accent-glow);
}
[data-theme="light"] ::selection { background: var(--accent); color: #fff; }
[data-theme="light"] .bg-grid {
  background-image:
    linear-gradient(to right, rgba(40,12,14,0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(40,12,14,0.035) 1px, transparent 1px);
}
[data-theme="light"] .bg-glow { opacity: 0.5; filter: blur(100px); }
[data-theme="light"] .bg-glow.g1 { background: radial-gradient(circle, rgba(193,18,31,0.16), transparent 65%); }
[data-theme="light"] .bg-glow.g2 { background: radial-gradient(circle, rgba(184,134,11,0.12), transparent 65%); }
[data-theme="light"] .bg-glow.g3 { background: radial-gradient(circle, rgba(193,18,31,0.10), transparent 65%); }
[data-theme="light"] .bg-noise { opacity: 0.018; }
[data-theme="light"] .btn-primary,
[data-theme="light"] .brand-mark,
[data-theme="light"] .router-core { color: #fff; }
[data-theme="light"] .trustbar { background: linear-gradient(180deg, rgba(40,12,14,0.012), transparent); }
[data-theme="light"] .node { box-shadow: 0 6px 18px -10px rgba(26,13,14,0.25); }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-sans);
  font-size: var(--t-body);
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background 0.4s var(--ease-soft), color 0.4s var(--ease-soft);
}
/* 主题切换时,大面块平滑过渡(动画/变换块除外) */
.site-header, .feature, .scene, .model-col, .chip, .track, .board, .bm,
.toc-band, .cta-inner, .site-footer, .trustbar, .router-stage, .seg, .btn-ghost {
  transition: background 0.4s var(--ease-soft), border-color 0.4s var(--ease-soft), color 0.4s var(--ease-soft);
}
h1, h2 { text-wrap: balance; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: #fff; }

/* ---------- 背景:分层光晕 + 细网格 + 噪点 ---------- */
.bg-stage { position: fixed; inset: 0; z-index: -2; overflow: hidden; pointer-events: none; }
.bg-grid {
  position: absolute; inset: -2px;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.020) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.020) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 55% at 50% 0%, #000 35%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 90% 55% at 50% 0%, #000 35%, transparent 80%);
}
.bg-glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.55; }
.bg-glow.g1 { width: 720px; height: 720px; top: -340px; left: 50%; transform: translateX(-50%);
  background: radial-gradient(circle, rgba(212,32,42,0.30), transparent 65%); }
.bg-glow.g2 { width: 520px; height: 520px; top: 18%; right: -200px;
  background: radial-gradient(circle, rgba(232,176,75,0.16), transparent 65%); }
.bg-glow.g3 { width: 480px; height: 480px; bottom: -160px; left: -160px;
  background: radial-gradient(circle, rgba(212,32,42,0.14), transparent 65%); }
.bg-noise {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: 0.035;
  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='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 容器 / 通用排版 ---------- */
.wrap { width: min(100% - 40px, var(--content)); margin-inline: auto; }
.section { padding: clamp(80px, 11vw, 150px) 0; position: relative; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: var(--t-xs); letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent-bright); font-weight: 500; margin: 0 0 18px;
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: var(--accent); opacity: 0.6; }

.section-head { max-width: 720px; margin: 0 auto clamp(44px, 6vw, 72px); text-align: center; }
.section-head.left { margin-inline: 0; text-align: left; }
.section-head h2 { font-size: var(--t-h2); line-height: 1.12; margin: 0 0 16px; font-weight: 700; letter-spacing: -0.02em; }
.section-head p { color: var(--muted); font-size: var(--t-lede); margin: 0; line-height: 1.55; }

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

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px; padding: 13px 24px; border-radius: var(--pill);
  font-weight: 600; font-size: var(--t-sm); border: 1px solid transparent; cursor: pointer;
  transition: all 0.24s var(--ease); font-family: inherit; white-space: nowrap; line-height: 1;
}
.btn .arr { transition: transform 0.24s var(--ease); }
.btn:hover .arr { transform: translateX(3px); }
.btn-primary { background: var(--grad-brand); color: #fff; box-shadow: var(--shadow-glow); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 26px 80px -22px var(--accent-glow); }
.btn-ghost { background: var(--btn-ghost-bg); color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { background: var(--btn-ghost-bg-hover); border-color: var(--accent); transform: translateY(-2px); }
.btn-sm { padding: 9px 17px; font-size: 13.5px; }

/* ---------- 语言 / 主题 切换段 ---------- */
.seg { display: inline-flex; align-items: center; gap: 2px; padding: 3px; border-radius: var(--pill);
  background: var(--btn-ghost-bg); border: 1px solid var(--line); }
.seg-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 1px; cursor: pointer;
  font-family: var(--font-mono); font-size: 12px; font-weight: 600; color: var(--muted);
  background: transparent; border: 0; border-radius: var(--pill); padding: 6px 11px; line-height: 1;
  transition: color 0.18s, background 0.18s;
}
.seg-btn:hover { color: var(--ink); }
.seg-btn .seg-sep { opacity: 0.4; margin: 0 1px; }
.seg-icon { padding: 6px 9px; }
.seg-icon svg { width: 15px; height: 15px; }
.seg-icon .ic-sun { display: none; }
[data-theme="light"] .seg-icon .ic-moon { display: none; }
[data-theme="light"] .seg-icon .ic-sun { display: block; }
/* 当前语言高亮:html lang 控制 */
html:not([lang="en"]) .seg-zh { color: var(--accent-bright); }
html[lang="en"] .seg-en { color: var(--accent-bright); }

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100; transition: all 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: var(--header-bg); backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4); border-bottom-color: var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  position: relative; width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center;
  background: var(--grad-brand); color: #fff; font-weight: 800; font-size: 20px;
  box-shadow: var(--shadow-glow); flex: none;
}
.brand-copy strong { display: block; font-size: 16px; font-weight: 700; letter-spacing: -0.01em; line-height: 1.15; }
.brand-copy small { display: block; font-family: var(--font-mono); font-size: 11px; color: var(--muted); letter-spacing: 0.02em; }
.nav-links { display: flex; gap: 32px; }
.nav-links a { font-size: var(--t-sm); color: var(--ink-2); transition: color 0.18s; position: relative; }
.nav-links a:hover { color: var(--accent-bright); }
.nav-cta { display: flex; gap: 10px; align-items: center; }

/* ============================================================================
   1. HERO + 招牌路由动效
   ============================================================================ */
.hero { padding: clamp(56px, 8vw, 96px) 0 clamp(60px, 8vw, 100px); }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(36px, 5vw, 72px); align-items: center; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 9px; padding: 7px 15px 7px 11px; border-radius: var(--pill);
  background: var(--panel); border: 1px solid var(--line); font-size: var(--t-xs);
  color: var(--ink-2); margin-bottom: 26px; font-family: var(--font-mono); backdrop-filter: blur(8px);
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-bright);
  box-shadow: 0 0 0 0 var(--accent-glow); animation: pulse-dot 2.6s var(--ease) infinite; }
@keyframes pulse-dot { 0%,55%,100% { box-shadow: 0 0 0 0 rgba(255,90,95,0.55); } 28% { box-shadow: 0 0 0 7px rgba(255,90,95,0); } }

.hero h1 { font-size: var(--t-display); line-height: 1.04; margin: 0 0 20px; font-weight: 800; letter-spacing: -0.03em; }
.hero h1 .en { font-family: var(--font-mono); font-weight: 700; letter-spacing: -0.04em; }
.hero-lede { font-size: var(--t-lede); color: var(--ink-2); margin: 0 0 14px; max-width: 540px; line-height: 1.5; }
.hero-sub { font-size: var(--t-sm); color: var(--muted); margin: 0 0 34px; max-width: 500px; }
.hero-actions { display: flex; gap: 13px; flex-wrap: wrap; margin-bottom: 38px; }

.proof-strip { display: flex; flex-wrap: wrap; gap: 10px 22px; align-items: center; }
.proof-strip span { font-family: var(--font-mono); font-size: var(--t-xs); color: var(--muted);
  display: inline-flex; align-items: center; gap: 8px; }
.proof-strip span:not(:last-child)::after { content: "·"; color: var(--muted-2); margin-left: 14px; }

/* —— 招牌:路由网关图 —— */
.router {
  position: relative; aspect-ratio: 1 / 1; max-width: 480px; margin-inline: auto; width: 100%;
}
.router-stage {
  position: absolute; inset: 0; border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 50% 50%, rgba(212,32,42,0.08), transparent 60%),
    var(--panel);
  border: 1px solid var(--line); overflow: hidden; backdrop-filter: blur(10px);
  box-shadow: var(--shadow-card);
}
.router-stage::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 28px 28px; mask-image: radial-gradient(circle at 50% 50%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000, transparent 75%);
}
.router svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.router .flow { stroke-dasharray: 4 7; animation: flow 1.1s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -22; } }

/* 中央网关节点 */
.router-core {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 96px; height: 96px; border-radius: 24px; display: grid; place-items: center; text-align: center;
  background: var(--grad-brand); color: #fff; z-index: 3;
  box-shadow: 0 0 0 6px rgba(212,32,42,0.12), 0 0 50px rgba(212,32,42,0.48);
  animation: core-breathe 3.4s var(--ease) infinite;
}
@keyframes core-breathe { 0%,100% { box-shadow: 0 0 0 6px rgba(212,32,42,0.12), 0 0 50px rgba(212,32,42,0.42); } 50% { box-shadow: 0 0 0 10px rgba(212,32,42,0.07), 0 0 70px rgba(212,32,42,0.6); } }
.router-core b { font-size: 14px; font-weight: 800; line-height: 1.1; }
.router-core small { font-family: var(--font-mono); font-size: 9px; opacity: 0.8; }

/* 节点芯片 */
.node {
  position: absolute; z-index: 2; display: flex; align-items: center; gap: 7px;
  padding: 7px 11px; border-radius: var(--pill); font-size: 11.5px; font-weight: 600;
  background: var(--surface-2); border: 1px solid var(--line); color: var(--ink-2);
  white-space: nowrap; box-shadow: 0 6px 18px -8px rgba(0,0,0,0.7);
  transform: translate(-50%,-50%); animation: node-in 0.6s var(--ease) backwards;
}
.node .nd { width: 6px; height: 6px; border-radius: 50%; flex: none; }
.node.prov .nd { background: var(--teal); }
.node.tool .nd { background: var(--love); }
@keyframes node-in { from { opacity: 0; transform: translate(-50%,-50%) scale(0.85); } }

/* ============================================================================
   2. 信任条(词元云计算 背书)
   ============================================================================ */
.trustbar { border-block: 1px solid var(--line); background: linear-gradient(180deg, rgba(255,255,255,0.012), transparent); }
.trustbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; padding: 30px 0; }
.trustbar-lead { font-size: var(--t-sm); color: var(--muted); max-width: 260px; }
.trustbar-lead b { color: var(--ink-2); }
.trust-stats { display: flex; gap: clamp(22px, 4vw, 54px); flex-wrap: wrap; }
.trust-stat-v { font-family: var(--font-mono); font-size: clamp(20px, 2.4vw, 28px); font-weight: 700; letter-spacing: -0.01em; }
.trust-stat-l { font-size: var(--t-xs); color: var(--muted); margin-top: 2px; }

/* ============================================================================
   3. 一个网关(聚合价值,OpenRouter 式)
   ============================================================================ */
.gateway-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature {
  position: relative; padding: 30px; border-radius: var(--radius-lg);
  background: var(--surface); border: 1px solid var(--line); overflow: hidden;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.feature::after { content: ""; position: absolute; inset: 0 0 auto 0; height: 2px; background: var(--grad-brand); opacity: 0; transition: opacity 0.3s; }
.feature:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.feature:hover::after { opacity: 1; }
.feature-ic { width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-bright); margin-bottom: 18px; }
.feature-ic svg { width: 22px; height: 22px; }
.feature h3 { margin: 0 0 8px; font-size: var(--t-h3); letter-spacing: -0.01em; }
.feature p { margin: 0; color: var(--muted); font-size: var(--t-sm); line-height: 1.6; }

/* —— 智慧农林牧 场景卡(更大、更场景化) —— */
.scenes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.scene {
  position: relative; padding: 38px 32px; border-radius: var(--radius-lg);
  background:
    radial-gradient(140% 120% at 50% -10%, var(--accent-soft), transparent 60%),
    var(--surface);
  border: 1px solid var(--line); overflow: hidden;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.scene::after { content: ""; position: absolute; inset: auto 0 0 0; height: 3px; background: var(--grad-brand); opacity: 0; transition: opacity 0.3s; }
.scene:hover { transform: translateY(-5px); border-color: var(--line-strong); }
.scene:hover::after { opacity: 1; }
.scene-ic {
  width: 58px; height: 58px; border-radius: 16px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent-bright); margin-bottom: 22px;
}
.scene-ic svg { width: 28px; height: 28px; }
.scene h3 { margin: 0 0 10px; font-size: clamp(20px, 1.8vw, 24px); letter-spacing: -0.01em; }
.scene p { margin: 0; color: var(--muted); font-size: var(--t-sm); line-height: 1.65; }
.scene-note { text-align: center; font-size: var(--t-xs); color: var(--muted-2); font-family: var(--font-mono); margin: clamp(22px,3vw,34px) 0 0; }

/* 解决方案区:子标题 + 子引言(把行业/政企两类方案分组) */
.sub-h {
  font-size: clamp(1.05rem, 1.6vw, 1.32rem); font-weight: 700; letter-spacing: -0.01em;
  margin: 0 0 clamp(18px, 2.4vw, 26px); padding-left: 16px; position: relative; color: var(--ink);
}
.sub-h::before {
  content: ""; position: absolute; left: 0; top: 0.18em; bottom: 0.18em; width: 4px;
  border-radius: 4px; background: var(--grad-brand);
}
.sub-lede { color: var(--muted); font-size: var(--t-body); line-height: 1.6; margin: -6px 0 clamp(20px,2.6vw,28px); max-width: 760px; }

/* ============================================================================
   4. 模型库(全球 + 国产)
   ============================================================================ */
.models-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.model-col { padding: 28px; border-radius: var(--radius-lg); background: var(--surface); border: 1px solid var(--line); }
.model-col-head { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; }
.model-col-tag { font-family: var(--font-mono); font-size: var(--t-xs); padding: 4px 10px; border-radius: var(--pill); }
.model-col.global .model-col-tag { background: var(--accent-soft); color: var(--accent-bright); }
.model-col.cn .model-col-tag { background: var(--love-soft); color: var(--love); }
.model-col h3 { margin: 0; font-size: var(--t-h3); }
.chips { display: flex; flex-wrap: wrap; gap: 9px; }
.chip {
  font-family: var(--font-mono); font-size: 13px; padding: 8px 13px; border-radius: var(--radius-sm);
  background: var(--surface-2); border: 1px solid var(--line); color: var(--ink-2);
  transition: all 0.2s var(--ease);
}
.chip:hover { border-color: var(--line-strong); color: var(--ink); transform: translateY(-2px); }
.chip.soon { opacity: 0.5; }
.model-note { grid-column: 1 / -1; text-align: center; font-size: var(--t-xs); color: var(--muted-2); font-family: var(--font-mono); margin-top: 4px; }

/* ============================================================================
   5. 控制台预览(升舱版 dashboard)
   ============================================================================ */
.console-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.console-h2 { font-size: var(--t-h2); margin: 0 0 14px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.14; }
.console-lede { color: var(--muted); font-size: var(--t-lede); margin: 0; }
.console-copy ul { list-style: none; padding: 0; margin: 24px 0 0; display: flex; flex-direction: column; gap: 14px; }
.console-copy li { display: flex; gap: 12px; align-items: flex-start; font-size: var(--t-sm); color: var(--ink-2); }
.console-copy li .ck { flex: none; width: 22px; height: 22px; border-radius: 7px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-bright); margin-top: 1px; }
.console-copy li .ck svg { width: 13px; height: 13px; }

.board {
  border-radius: var(--radius-lg); background: var(--panel); border: 1px solid var(--line);
  overflow: hidden; box-shadow: var(--shadow-card); backdrop-filter: blur(10px);
}
.board-chrome { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,0.015); }
.board-chrome i { width: 10px; height: 10px; border-radius: 50%; background: var(--surface-3); }
.board-url { margin-left: 10px; font-family: var(--font-mono); font-size: 11.5px; color: var(--muted); display: flex; align-items: center; gap: 7px; }
.board-body { padding: 22px; }
.board-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.board-top h4 { margin: 0; font-size: 15px; }
.board-live { display: inline-flex; align-items: center; gap: 7px; font-family: var(--font-mono); font-size: 11px; color: var(--accent-bright); }
.board-live i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-bright); animation: pulse-dot 2s infinite; }
.board-metrics { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-bottom: 18px; }
.bm { padding: 14px; border-radius: var(--radius-sm); background: var(--surface-2); border: 1px solid var(--hairline); }
.bm span { font-size: 11px; color: var(--muted); display: block; }
.bm strong { font-family: var(--font-mono); font-size: 22px; font-weight: 700; display: block; margin-top: 4px; }
.bm small { font-family: var(--font-mono); font-size: 10px; color: var(--accent); }
.board-chart { display: flex; align-items: flex-end; gap: 5px; height: 84px; padding: 14px; border-radius: var(--radius-sm); background: var(--surface-2); border: 1px solid var(--hairline); }
.board-chart span { flex: 1; border-radius: 3px 3px 0 0; background: linear-gradient(to top, var(--accent-deep), var(--accent-bright)); height: var(--h); opacity: 0.85; transition: height 0.6s var(--ease); }

/* ============================================================================
   6. 双轨交付(大陆合规 / 海外跨境)
   ============================================================================ */
.tracks { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.track { position: relative; padding: 34px; border-radius: var(--radius-lg); background: var(--surface); border: 1px solid var(--line); }
.track-tag { font-family: var(--font-mono); font-size: var(--t-xs); color: var(--accent-bright); margin-bottom: 14px; display: block; }
.track h3 { margin: 0 0 12px; font-size: var(--t-h3); }
.track p { margin: 0 0 18px; color: var(--muted); font-size: var(--t-sm); line-height: 1.6; }
.track-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.track-list li { font-size: var(--t-sm); color: var(--ink-2); display: flex; gap: 10px; align-items: center; }
.track-list li::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); flex: none; }
.track-note { margin-top: clamp(24px,4vw,40px); text-align: center; font-size: var(--t-xs); color: var(--muted-2); max-width: 680px; margin-inline: auto; }

/* ============================================================================
   7. toC 轻入口 band
   ============================================================================ */
.toc-band {
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
  padding: 30px 34px; border-radius: var(--radius-lg);
  background: linear-gradient(120deg, var(--love-soft), transparent 70%), var(--surface);
  border: 1px solid var(--line);
}
.toc-band-copy h3 { margin: 0 0 5px; font-size: var(--t-h3); }
.toc-band-copy p { margin: 0; color: var(--muted); font-size: var(--t-sm); }

/* ============================================================================
   8. 收尾 CTA
   ============================================================================ */
.cta { text-align: center; }
.cta-inner {
  position: relative; padding: clamp(48px, 7vw, 84px) 28px; border-radius: var(--radius-xl);
  background: radial-gradient(120% 140% at 50% 0%, rgba(212,32,42,0.13), transparent 60%), var(--surface);
  border: 1px solid var(--line); overflow: hidden;
}
.cta h2 { font-size: var(--t-h2); margin: 0 auto 16px; max-width: 720px; line-height: 1.18; font-weight: 700; letter-spacing: -0.02em; }
.cta h2 .nb { display: inline-block; white-space: nowrap; }
.cta p { color: var(--muted); max-width: 540px; margin: 0 auto 32px; font-size: var(--t-lede); }
.cta-actions { display: flex; gap: 13px; justify-content: center; flex-wrap: wrap; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 56px 0 40px; background: var(--bg-2); }
.footer-top { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; margin-bottom: 40px; }
.footer-brand-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.footer-brand-row .brand-mark { width: 34px; height: 34px; font-size: 17px; }
.footer-brand-row strong { font-size: 15px; }
.footer-tagline { color: var(--muted); font-size: var(--t-sm); max-width: 340px; line-height: 1.6; }
.footer-cols { display: flex; gap: clamp(34px, 6vw, 80px); flex-wrap: wrap; }
.footer-col h5 { margin: 0 0 16px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted-2); }
.footer-col a { display: block; color: var(--ink-2); font-size: var(--t-sm); margin-bottom: 11px; transition: color 0.18s; }
.footer-col a:hover { color: var(--accent-bright); }
.footer-bottom { border-top: 1px solid var(--line); padding-top: 24px; display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; align-items: center; }
.footer-bottom .copy { font-size: var(--t-xs); color: var(--muted-2); }
.footer-bottom .copy b { color: var(--muted); font-weight: 600; }
.footer-beian { font-size: var(--t-xs); color: var(--muted); transition: color 0.18s; }
.footer-beian:hover { color: var(--accent-bright); }

/* ---------- 进场动画 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: 0.08s; }
.reveal[data-d="2"] { transition-delay: 0.16s; }
.reveal[data-d="3"] { transition-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  .bg-glow, .router-core, .router .flow, .hero-badge .dot, .board-live i { animation: none !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; }
  .router { order: -1; max-width: 380px; }
  .gateway-grid { grid-template-columns: 1fr; }
  .scenes-grid { grid-template-columns: 1fr; }
  .models-wrap { grid-template-columns: 1fr; }
  .console-grid { grid-template-columns: 1fr; }
  .tracks { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}
@media (max-width: 540px) {
  .nav-cta .btn-ghost { display: none; }
  .hero-actions .btn { flex: 1; justify-content: center; }
  .trustbar .wrap { flex-direction: column; align-items: flex-start; }
}