/* ════════════════════════════════════════════════════════════════════════════
   财小云 · 中国财税知识库 MCP — V3 设计系统 (mcp-v3.css)
   在 V2 暗色极光 DNA 上升级：
   1. 双 accent —— 蓝青（AI / 科技）+ 琥珀金（财税 / 文号 / 溯源）
   2. 无衬线展示标题（Space Grotesk + 思源黑）× 黑体正文 —— DS v1.2「无衬线、不使用宋体」
   3. 默认可见、JS 增强的动效（修掉 V2 reveal 空白隐患）
   ════════════════════════════════════════════════════════════════════════════ */

/* ── 1. Tokens ─────────────────────────────────────────────────────────── */
:root {
  /* 背景（近黑带蓝调，禁纯黑） */
  --v3-bg:        #07090D;
  --v3-bg-elev:   #0C0F16;
  --v3-bg-card:   #10141D;
  --v3-bg-code:   #05070B;

  /* 前景 */
  --v3-fg:        #EAEFF6;
  --v3-fg-2:      #9BA7B8;
  --v3-fg-3:      #677180;

  /* accent ① 蓝青（AI / MCP / 科技感） */
  --v3-blue:      #2E6BFF;
  --v3-blue-br:   #5B8CFF;
  --v3-cyan:      #2DD4EE;
  --v3-grad:      linear-gradient(135deg, #2E6BFF 0%, #2DD4EE 100%);
  --v3-tint-blue: rgba(46,107,255,.13);

  /* accent ② 琥珀金（财税 / 文号 / 溯源 —— 小面积点缀） */
  --v3-gold:      #D9A441;
  --v3-gold-br:   #EBC16E;
  --v3-tint-gold: rgba(217,164,65,.12);
  --v3-gold-line: rgba(217,164,65,.38);

  /* 描边 */
  --v3-border:    rgba(255,255,255,.07);
  --v3-border-2:  rgba(255,255,255,.13);

  /* 投影 */
  --v3-shadow-card: 0 1px 2px rgba(0,0,0,.32), 0 2px 10px rgba(0,0,0,.26), 0 28px 64px -28px rgba(0,0,0,.65);
  --v3-shadow-pop:  0 2px 4px rgba(0,0,0,.35), 0 32px 80px -24px rgba(0,0,0,.75), 0 0 0 1px rgba(255,255,255,.05);
  --v3-glow-grad:   0 8px 32px -8px rgba(46,107,255,.45), 0 2px 8px -2px rgba(45,212,238,.30);

  /* 字体 */
  --v3-font:    -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Noto Sans SC', 'Source Han Sans SC', system-ui, sans-serif;
  --v3-display: 'Space Grotesk', 'Noto Sans SC', system-ui, sans-serif;
  --v3-mono:    'SF Mono', ui-monospace, 'Cascadia Code', Consolas, 'Noto Sans SC', monospace;

  /* 圆角 */
  --v3-radius:    18px;
  --v3-radius-sm: 12px;
  --v3-pill:      999px;

  /* 动效 */
  --v3-ease: cubic-bezier(.16,1,.3,1);
  --v3-dur:  700ms;

  /* 布局 */
  --v3-container: 1160px;
  --v3-gutter: 32px;
  --v3-gutter-m: 20px;
}

/* ── 2. Reset + Base ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { font-synthesis: none; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--v3-font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--v3-fg);
  background-color: var(--v3-bg);
  background-image:
    radial-gradient(56% 42% at 50% -8%, rgba(46,107,255,.22), transparent 62%),
    radial-gradient(38% 32% at 84% 2%,  rgba(45,212,238,.12), transparent 60%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
#aurora-bg { position: fixed; inset: 0; z-index: -2; pointer-events: none; }
.grain-overlay {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .045;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  animation: grain-shift .7s steps(5) infinite;
}
@keyframes grain-shift {
  0%{transform:translate(0,0)} 25%{transform:translate(-3px,2px)}
  50%{transform:translate(2px,-3px)} 75%{transform:translate(-2px,-2px)} 100%{transform:translate(0,0)}
}
@media (prefers-reduced-motion: reduce) {
  .grain-overlay { animation: none; opacity: .03; }
  #aurora-bg { display: none; }
  .grad-text, .demo-chat::before { animation: none; }
  html { scroll-behavior: auto; }
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: 0; color: inherit; }
h1, h2, h3, h4, p, ul, ol { margin: 0; padding: 0; }
ul, ol { list-style: none; }
::selection { background: rgba(46,107,255,.35); }
:where(a, button, [tabindex]):focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(46,107,255,.45);
  border-radius: var(--v3-radius-sm);
}

/* ── 3. 布局工具 ───────────────────────────────────────────────────────── */
.wrap { max-width: var(--v3-container); margin: 0 auto; padding: 0 var(--v3-gutter); }

/* 极光细线（品牌签名，保留自 V2） */
.aurora-rule { height: 2px; border: 0; margin: 0; background: var(--v3-grad); }
.aurora-rule--short { width: 44px; }

/* 金色小帽标 —— section 编辑感 overline */
.overline {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--v3-mono); font-size: 12px; letter-spacing: .22em;
  color: var(--v3-gold); text-transform: uppercase;
}
.overline::before { content: ""; width: 26px; height: 1px; background: var(--v3-gold-line); }

/* ── 4. 导航 ───────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 200; height: 68px;
  background: rgba(7,9,13,.55);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.nav-in { display: flex; align-items: center; gap: 28px; height: 68px; }
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 15.5px; letter-spacing: .01em; white-space: nowrap;
}
.nav-brand-mark { width: 30px; height: 30px; }
.nav-links { display: flex; gap: 4px; margin-left: 8px; }
.nav-links a {
  padding: 8px 14px; border-radius: var(--v3-pill);
  color: var(--v3-fg-2); font-size: 14.5px;
  transition: color 200ms var(--v3-ease), background 200ms var(--v3-ease);
}
.nav-links a:hover { color: var(--v3-fg); background: rgba(255,255,255,.05); }
.nav-links a.active { color: var(--v3-fg); background: rgba(255,255,255,.06); box-shadow: inset 0 0 0 1px var(--v3-border); }
.nav-cta { display: flex; align-items: center; gap: 18px; margin-left: auto; }
.nav-cta > a:not(.btn) { color: var(--v3-fg-2); font-size: 14.5px; transition: color 200ms; }
.nav-cta > a:not(.btn):hover { color: var(--v3-fg); }
.nav-icon-disabled {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--v3-fg-3); opacity: .58; cursor: not-allowed;
  font-family: var(--v3-mono); font-size: 10px; letter-spacing: .04em;
}
.nav-icon-disabled svg { width: 20px; height: 20px; }
.nav-login { font-weight: 600; }
.nav-icon { display: flex; opacity: .75; transition: opacity 200ms; }
.nav-icon:hover { opacity: 1; }
.nav-icon svg { width: 20px; height: 20px; }
.nav-burger { display: none; width: 40px; height: 40px; padding: 8px; margin-left: auto; }
.nav-burger svg { width: 24px; height: 24px; }

/* 版本徽标（导航品牌旁）—— 同一视觉，T40 起改名，语义为「当前版本」 */
.ver-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 9px; border-radius: var(--v3-pill);
  background: var(--v3-tint-blue); border: 1px solid rgba(46,107,255,.32);
  color: var(--v3-blue-br); font-size: 11px; font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase;
}
.ver-badge::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--v3-cyan); }

/* 移动端抽屉 */
.drawer-scrim {
  position: fixed; inset: 0; z-index: 300;
  background: rgba(4,5,8,.6); backdrop-filter: blur(4px);
  opacity: 0; pointer-events: none; transition: opacity 300ms var(--v3-ease);
}
.drawer-scrim.is-open { opacity: 1; pointer-events: auto; }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 310;
  width: min(320px, 84vw); padding: 72px 28px 32px;
  background: var(--v3-bg-elev); border-left: 1px solid var(--v3-border);
  transform: translateX(100%); transition: transform 380ms var(--v3-ease);
  display: flex; flex-direction: column; gap: 8px;
}
.drawer.is-open { transform: translateX(0); }
.drawer-close { position: absolute; top: 18px; right: 20px; font-size: 28px; color: var(--v3-fg-2); }
.drawer-links { display: flex; flex-direction: column; gap: 4px; margin-bottom: 20px; }
.drawer-links a { padding: 12px 10px; font-size: 16px; color: var(--v3-fg-2); border-bottom: 1px solid var(--v3-border); }
.drawer-links a:hover { color: var(--v3-fg); }
.drawer-disabled {
  padding: 12px 10px; color: var(--v3-fg-3); opacity: .58;
  border-bottom: 1px solid var(--v3-border); cursor: not-allowed;
}

/* ── 5. 按钮 ───────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 22px; border-radius: var(--v3-pill);
  font-size: 14.5px; font-weight: 600; letter-spacing: .01em; white-space: nowrap;
  transition: transform 240ms var(--v3-ease), box-shadow 240ms var(--v3-ease),
              background 240ms var(--v3-ease), border-color 240ms var(--v3-ease);
}
.btn:active { transform: translateY(1px) scale(.99); }
.btn-lg { padding: 14px 32px; font-size: 15.5px; }

/* 主 CTA —— 全站只用这一个渐变实心按钮 */
.btn-grad {
  background: var(--v3-grad); color: #fff;
  box-shadow: 0 2px 8px -2px rgba(46,107,255,.4);
}
.btn-grad:hover { transform: translateY(-2px); box-shadow: var(--v3-glow-grad); }

/* 次级 —— 磨砂 ghost */
.btn-ghost {
  border: 1px solid var(--v3-border-2); color: var(--v3-fg);
  background: rgba(255,255,255,.03); backdrop-filter: blur(6px);
}
.btn-ghost:hover { border-color: rgba(255,255,255,.28); background: rgba(255,255,255,.06); transform: translateY(-2px); }
.btn-disabled, .btn-disabled:hover {
  color: var(--v3-fg-3); background: rgba(255,255,255,.055);
  border: 1px solid var(--v3-border); box-shadow: none;
  cursor: not-allowed; transform: none;
}

:where(h1, h2, h3, p, li, dd) { text-wrap: pretty; }
.tech-details {
  border: 1px solid var(--v3-border); border-radius: var(--v3-radius);
  background: rgba(255,255,255,.025); padding: 18px 22px;
}
.tech-details > summary {
  cursor: pointer; color: var(--v3-fg-2); font-weight: 700;
}
.tech-details[open] > summary { margin-bottom: 28px; color: var(--v3-fg); }

/* ── 6. Hero ───────────────────────────────────────────────────────────── */
.hero { padding: 96px 0 40px; text-align: center; }
.hero-badges { display: flex; justify-content: center; align-items: center; gap: 12px; margin-bottom: 28px; flex-wrap: wrap; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 4px 14px; border-radius: var(--v3-pill);
  border: 1px solid var(--v3-gold-line); background: var(--v3-tint-gold);
  color: var(--v3-gold-br); font-size: 12.5px; letter-spacing: .06em;
}
.hero-badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--v3-gold); box-shadow: 0 0 8px var(--v3-gold); }
.hero h1 {
  font-family: var(--v3-display);
  font-size: clamp(42px, 6.2vw, 68px);
  font-weight: 900; line-height: 1.18; letter-spacing: .01em;
  margin-bottom: 24px;
}
.grad-text {
  background: linear-gradient(120deg, #2E6BFF 0%, #2DD4EE 32%, #8FC1FF 52%, #2E6BFF 78%, #2DD4EE 100%);
  background-size: 240% 100%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  animation: grad-drift 9s ease-in-out infinite;
}
@keyframes grad-drift {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}
.hero-sub {
  max-width: 620px; margin: 0 auto 40px;
  font-size: 17.5px; color: var(--v3-fg-2); line-height: 1.85;
}
.hero-sub strong { color: var(--v3-fg); font-weight: 600; }
.hero-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ── 7. 对话演示卡（Hero 核心资产，自动播放） ────────────────────────── */
.demo-chat {
  position: relative; max-width: 860px; margin: 64px auto 0;
  background: linear-gradient(180deg, #0D1119 0%, #0A0D14 100%);
  border: 1px solid var(--v3-border); border-radius: 20px;
  box-shadow: var(--v3-shadow-pop);
  text-align: left; overflow: hidden;
}
/* 卡片顶部一道极光 */
.demo-chat::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, #2E6BFF, #2DD4EE, #5B8CFF, #2E6BFF);
  background-size: 220% 100%;
  opacity: .9;
  animation: rule-flow 6s linear infinite;
}
@keyframes rule-flow {
  0%   { background-position: 0% 0; }
  100% { background-position: 220% 0; }
}
.dc-head {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 20px; border-bottom: 1px solid var(--v3-border);
  background: rgba(255,255,255,.02);
}
.dc-head .dot { width: 11px; height: 11px; border-radius: 50%; }
.dot-r { background: #FF5F57; } .dot-y { background: #FEBC2E; } .dot-g { background: #28C840; }
.dc-tab { margin-left: 10px; font-family: var(--v3-mono); font-size: 12px; color: var(--v3-fg-3); letter-spacing: .04em; }
.dc-replay {
  margin-left: auto; display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--v3-mono); font-size: 11.5px; color: var(--v3-fg-3);
  padding: 4px 10px; border-radius: var(--v3-pill); border: 1px solid var(--v3-border);
  opacity: 0; pointer-events: none; transition: opacity 400ms, color 200ms, border-color 200ms;
}
.dc-replay.is-show { opacity: 1; pointer-events: auto; }
.dc-replay:hover { color: var(--v3-fg); border-color: var(--v3-border-2); }
.dc-body { padding: 26px 28px 30px; display: flex; flex-direction: column; gap: 22px; }

.dc-user { display: flex; gap: 12px; align-items: flex-start; justify-content: flex-end; }
.dc-bubble {
  background: var(--v3-tint-blue); border: 1px solid rgba(46,107,255,.30);
  border-radius: 16px 16px 4px 16px; padding: 13px 18px;
  font-size: 15px; color: rgba(255,255,255,.94); line-height: 1.65; max-width: 80%;
}
.dc-ai { display: flex; gap: 12px; align-items: flex-start; }
.dc-avatar {
  flex-shrink: 0; width: 30px; height: 30px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--v3-mono); font-size: 11px; font-weight: 700;
}
.dc-avatar.u { background: rgba(255,255,255,.08); color: rgba(255,255,255,.65); }
.dc-avatar.a { background: var(--v3-grad); color: #fff; }
.dc-ai-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 16px; }

.dc-chain-label {
  font-family: var(--v3-mono); font-size: 11px; font-weight: 700;
  color: var(--v3-fg-3); text-transform: uppercase; letter-spacing: .10em;
}
.dc-chain { display: flex; flex-direction: column; gap: 8px; }
.dc-tool {
  display: flex; align-items: center; flex-wrap: wrap; gap: 0;
  font-family: var(--v3-mono); font-size: 13px; line-height: 1.5;
  padding: 8px 14px; border-radius: 10px;
  background: rgba(255,255,255,.025); border: 1px solid rgba(255,255,255,.05);
}
.dc-tool .dc-arrow { color: var(--v3-gold); margin-right: 10px; }
.dc-tool .dc-fn { color: #7FB3FF; }
.dc-tool .dc-args { color: var(--v3-fg-3); }
.dc-tool .dc-st { margin-left: auto; font-size: 11.5px; color: var(--v3-fg-3); transition: color 300ms; }
.dc-tool.is-done .dc-st { color: var(--v3-cyan); }

.dc-answer {
  background: linear-gradient(180deg, rgba(217,164,65,.07), rgba(217,164,65,.03));
  border: 1px solid rgba(217,164,65,.18);
  border-left: 3px solid var(--v3-gold);
  border-radius: 4px 14px 14px 4px; padding: 18px 22px;
}
.dc-answer p { margin: 0 0 10px; font-size: 14px; color: rgba(255,255,255,.85); line-height: 1.75; }
.dc-answer p:last-child { margin-bottom: 0; }
.dc-answer p.lead { font-size: 15px; color: rgba(255,255,255,.96); font-weight: 600; margin-bottom: 12px; }
.dc-answer strong { color: #fff; }
.dc-answer .num { font-family: var(--v3-display); color: var(--v3-gold-br); font-weight: 700; }
.dc-answer .src {
  font-family: var(--v3-mono); font-size: 12px; color: var(--v3-gold-br);
  padding-top: 12px; margin-top: 4px; border-top: 1px solid rgba(217,164,65,.16);
  letter-spacing: .02em;
}
/* 播放状态（JS 控制；无 JS / reduced-motion 时全部默认可见） */
.demo-arm .dc-user, .demo-arm .dc-chain-label, .demo-arm .dc-tool, .demo-arm .dc-answer {
  opacity: 0; transform: translateY(10px);
  transition: opacity 520ms var(--v3-ease), transform 520ms var(--v3-ease);
}
.demo-arm .is-on { opacity: 1; transform: none; }

/* ── 8. 数据带（stats） ────────────────────────────────────────────────── */
.stats-band { padding: 56px 0; border-top: 1px solid var(--v3-border); border-bottom: 1px solid var(--v3-border); background: rgba(255,255,255,.012); }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { text-align: center; position: relative; }
.stat + .stat::before {
  content: ""; position: absolute; left: -12px; top: 12%; bottom: 12%;
  width: 1px; background: var(--v3-border);
}
.stat-num {
  font-family: var(--v3-display); font-weight: 700;
  font-size: clamp(34px, 3.6vw, 46px); line-height: 1.1;
  font-variant-numeric: tabular-nums; letter-spacing: .01em;
}
.stat-num .u { font-size: .52em; margin-left: 2px; color: var(--v3-gold-br); font-weight: 600; }
.stat-label { margin-top: 8px; font-size: 13.5px; color: var(--v3-fg-3); letter-spacing: .04em; }

/* ── 9. Section 通用 ───────────────────────────────────────────────────── */
.section { padding: 104px 0; }
.section--tight { padding: 72px 0; }
#start { padding: 48px 0 104px; }
.section-head { max-width: 680px; margin-bottom: 48px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 {
  font-family: var(--v3-display); font-weight: 700;
  font-size: clamp(30px, 3.6vw, 42px); line-height: 1.3;
  margin: 18px 0 16px; letter-spacing: .01em;
}
.section-head p { font-size: 16.5px; color: var(--v3-fg-2); line-height: 1.8; }
h1, h2, h3, .hero-sub, .section-head p, .gate-item { text-wrap: pretty; }
.no-break { white-space: nowrap; }

/* ── 10. 三步流程 ──────────────────────────────────────────────────────── */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; position: relative; }
/* 桌面端连接线 */
@media (min-width: 900px) {
  .steps::before {
    content: ""; position: absolute; top: 34px; left: 12%; right: 12%; height: 1px;
    background: linear-gradient(90deg, transparent, var(--v3-border-2) 18%, var(--v3-border-2) 82%, transparent);
  }
}
.step {
  position: relative; padding: 28px 26px 30px;
  background: var(--v3-bg-card); border: 1px solid var(--v3-border);
  border-radius: var(--v3-radius); box-shadow: var(--v3-shadow-card);
  transition: transform 320ms var(--v3-ease), border-color 320ms var(--v3-ease);
}
.step:hover { transform: translateY(-4px); border-color: var(--v3-border-2); }
.step-num {
  width: 44px; height: 44px; margin-bottom: 20px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--v3-display); font-size: 21px; font-weight: 700;
  background: var(--v3-tint-blue); border: 1px solid rgba(46,107,255,.30); color: var(--v3-blue-br);
}
.step:nth-child(3) .step-num {
  background: var(--v3-tint-gold); border-color: var(--v3-gold-line); color: var(--v3-gold-br);
}
.step h3 { font-size: 18.5px; font-weight: 700; margin-bottom: 10px; letter-spacing: .01em; }
.step p { font-size: 14.5px; color: var(--v3-fg-2); line-height: 1.75; }
.step .step-meta {
  margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--v3-border);
  font-family: var(--v3-mono); font-size: 12px; color: var(--v3-fg-3);
}

/* ── 11. 数据底座分层图 ────────────────────────────────────────────────── */
.atlas { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: center; }
.atlas-copy h2 {
  font-family: var(--v3-display); font-weight: 700;
  font-size: clamp(28px, 3.2vw, 38px); line-height: 1.32; margin: 18px 0 18px;
}
.atlas-copy > p { color: var(--v3-fg-2); font-size: 15.5px; line-height: 1.85; margin-bottom: 14px; }
.atlas-copy .gold-note {
  font-size: 13.5px; color: var(--v3-gold-br);
  padding-left: 14px; border-left: 2px solid var(--v3-gold-line); margin-top: 22px;
  line-height: 1.75;
}
.atlas-stack { display: flex; flex-direction: column; gap: 12px; }
.layer {
  position: relative; display: flex; align-items: center; gap: 16px;
  padding: 18px 22px; border-radius: 14px;
  background: var(--v3-bg-card); border: 1px solid var(--v3-border);
  box-shadow: var(--v3-shadow-card);
  transition: transform 300ms var(--v3-ease), border-color 300ms var(--v3-ease);
}
.layer:hover { transform: translateX(6px); border-color: var(--v3-border-2); }
.layer-tag {
  flex-shrink: 0; width: 46px; height: 46px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--v3-mono); font-size: 14px; font-weight: 700;
  background: var(--v3-tint-blue); border: 1px solid rgba(46,107,255,.30); color: var(--v3-blue-br);
}
.layer:last-child .layer-tag {
  background: var(--v3-tint-gold); border-color: var(--v3-gold-line); color: var(--v3-gold-br);
}
.layer h3 { font-size: 15.5px; font-weight: 700; }
.layer p { font-size: 13px; color: var(--v3-fg-3); margin-top: 2px; }
.layer-meta {
  margin-left: auto; flex-shrink: 0;
  font-family: var(--v3-mono); font-size: 11.5px; color: var(--v3-fg-3);
  padding: 4px 10px; border-radius: var(--v3-pill); border: 1px solid var(--v3-border);
}
/* 层间向下箭头 */
.atlas-stack .layer-arrow {
  align-self: center; margin: -6px 0; color: var(--v3-fg-3);
  font-size: 12px; line-height: 1;
}

/* ── 12. 工具网格 ──────────────────────────────────────────────────────── */
.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tool-card {
  position: relative; padding: 24px 24px 22px; overflow: hidden;
  background: var(--v3-bg-card); border: 1px solid var(--v3-border);
  border-radius: var(--v3-radius); box-shadow: var(--v3-shadow-card);
  transition: transform 320ms var(--v3-ease), border-color 320ms var(--v3-ease);
}
/* hover 时顶部浮出渐变光 */
.tool-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--v3-grad); opacity: 0; transition: opacity 320ms;
}
.tool-card:hover { transform: translateY(-4px); border-color: var(--v3-border-2); }
.tool-card:hover::before { opacity: .9; }
.tool-card--gold::before { background: linear-gradient(135deg, var(--v3-gold), var(--v3-gold-br)); }
.tool-fn { font-family: var(--v3-mono); font-size: 14px; color: #7FB3FF; letter-spacing: .01em; }
.tool-card--gold .tool-fn { color: var(--v3-gold-br); }
.tool-cn { font-size: 16.5px; font-weight: 700; margin: 10px 0 8px; }
.tool-card p { font-size: 13.5px; color: var(--v3-fg-2); line-height: 1.7; }

/* ── 13. 信任区 ────────────────────────────────────────────────────────── */
.trust-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px 48px; }
.trust-item { display: flex; gap: 20px; padding: 26px 4px; border-top: 1px solid var(--v3-border); }
.trust-num {
  flex-shrink: 0; font-family: var(--v3-display); font-size: 26px; font-weight: 700;
  color: var(--v3-gold); line-height: 1.2; font-variant-numeric: tabular-nums;
}
.trust-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.trust-item p { font-size: 14px; color: var(--v3-fg-2); line-height: 1.75; }

/* ── 14. CTA 横幅 ──────────────────────────────────────────────────────── */
.cta-band {
  position: relative; text-align: center;
  padding: 72px 40px; border-radius: 24px; overflow: hidden;
  background:
    radial-gradient(60% 120% at 50% -20%, rgba(46,107,255,.22), transparent 60%),
    var(--v3-bg-elev);
  border: 1px solid var(--v3-border-2);
  box-shadow: var(--v3-shadow-pop);
}
.cta-band::before {
  content: ""; position: absolute; top: 0; left: 15%; right: 15%; height: 2px;
  background: var(--v3-grad);
}
.cta-band h2 {
  font-family: var(--v3-display); font-weight: 700;
  font-size: clamp(28px, 3.4vw, 40px); margin-bottom: 14px;
}
.cta-band p { color: var(--v3-fg-2); font-size: 16px; margin-bottom: 36px; }

/* ── 15. 页脚（多栏） ─────────────────────────────────────────────────── */
.footer { border-top: 1px solid var(--v3-border); background: rgba(255,255,255,.014); }
.footer-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px; padding: 64px 0 48px;
}
.footer-brand .nav-brand { margin-bottom: 16px; }
.footer-brand p { font-size: 13.5px; color: var(--v3-fg-3); line-height: 1.8; max-width: 300px; }
.footer-col h4 {
  font-family: var(--v3-mono); font-size: 11.5px; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase; color: var(--v3-fg-3);
  margin-bottom: 18px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col a { font-size: 14px; color: var(--v3-fg-2); transition: color 200ms; }
.footer-col a:hover { color: var(--v3-fg); }
.footer-col .soon { font-size: 11px; color: var(--v3-gold-br); margin-left: 6px; letter-spacing: .04em; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 22px 0 26px; border-top: 1px solid var(--v3-border);
  font-size: 12.5px; color: var(--v3-fg-3);
}
.footer-bottom a { color: var(--v3-fg-3); }
.footer-bottom a:hover { color: var(--v3-fg-2); }
.footer-disclaimer { flex-basis: 100%; font-size: 12px; color: rgba(103,113,128,.85); }

/* ── 15b. 卡片鼠标追光（Linear 式局部光晕；JS 写入 --mx/--my） ───────────── */
.step::after, .tool-card::after, .layer::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%),
              rgba(46,107,255,.12), transparent 65%);
  opacity: 0; transition: opacity 380ms var(--v3-ease);
  z-index: 0;
}
.step:hover::after, .tool-card:hover::after, .layer:hover::after { opacity: 1; }
.tool-card--gold::after {
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%),
              rgba(217,164,65,.14), transparent 65%);
}
/* 追光层压在卡片上方时，保证文字仍可选择/可读 */
.step > *, .tool-card > *, .layer > * { position: relative; z-index: 1; }

/* ── 16. 滚动渐入（默认可见；JS 先 arm 再 in，无 JS 不隐藏） ──────────── */
.rv-arm {
  opacity: 0; transform: translateY(18px);
  transition: opacity 700ms var(--v3-ease), transform 700ms var(--v3-ease);
  transition-delay: var(--rv-delay, 0ms);
}
.rv-arm.rv-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .rv-arm { opacity: 1; transform: none; transition: none; }
}

/* ── 17. 响应式 ────────────────────────────────────────────────────────── */
@media (max-width: 960px) {
  .atlas { grid-template-columns: 1fr; gap: 48px; }
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .nav-burger { display: block; }
  .hero { padding: 64px 0 32px; }
  .section { padding: 64px 0; }
  .section--tight { padding: 56px 0; }
  .section-head { margin-bottom: 36px; }
  .steps { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; }
  .stat:nth-child(3)::before { display: none; }
  .trust-list { grid-template-columns: 1fr; }
  .wrap { padding: 0 var(--v3-gutter-m); }
}
@media (max-width: 640px) {
  .tools-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .dc-body { padding: 20px 16px 24px; }
  .dc-bubble { font-size: 14px; max-width: 88%; }
  .hero-sub { font-size: 16px; }
  .cta-band { padding: 56px 24px; }
}

/* ════════════════════════════════════════════════════════════════════════════
   18. 内页通用（page-head + prose）—— intro / docs / pricing / 法务页共用
   ════════════════════════════════════════════════════════════════════════════ */
.page-head { padding: 80px 0 40px; }
.page-head h1 {
  font-family: var(--v3-display); font-weight: 900;
  font-size: clamp(34px, 4.6vw, 52px); line-height: 1.25;
  margin: 20px 0 14px; letter-spacing: .01em;
}
.page-head .prose-meta { color: var(--v3-fg-3); font-size: 15px; }
.page-head .prose-meta code {
  font-family: var(--v3-mono); font-size: 13px; color: var(--v3-cyan);
  background: var(--v3-tint-blue); padding: 3px 8px; border-radius: 6px;
}

/* 长文排版（法务页 / docs 文字区） */
.prose { max-width: 780px; }
.prose h2 {
  font-family: var(--v3-display); font-weight: 700;
  font-size: 25px; line-height: 1.4; margin: 48px 0 16px;
}
.prose h2:first-child { margin-top: 0; }
.prose p { color: var(--v3-fg-2); font-size: 15.5px; line-height: 1.9; margin: 0 0 18px; }
.prose strong { color: var(--v3-fg); font-weight: 600; }
.prose ul { margin: 0 0 18px; padding-left: 2px; }
.prose li {
  position: relative; padding-left: 22px; margin-bottom: 10px;
  color: var(--v3-fg-2); font-size: 15px; line-height: 1.8;
}
.prose li::before { content: ""; position: absolute; left: 2px; top: .72em; width: 6px; height: 6px; border-radius: 2px; background: var(--v3-blue-br); opacity: .8; }
.prose a { color: var(--v3-cyan); text-decoration: none; border-bottom: 1px solid rgba(45,212,238,.35); transition: border-color 200ms; }
.prose a:hover { border-bottom-color: var(--v3-cyan); }
.prose code {
  font-family: var(--v3-mono); font-size: .88em; color: var(--v3-cyan);
  background: var(--v3-tint-blue); padding: 2px 7px; border-radius: 6px;
}

/* ── 19. 代码块（docs 页） ─────────────────────────────────────────────── */
.code-block {
  margin: 24px 0 28px; border-radius: 16px; overflow: hidden;
  background: var(--v3-bg-code); border: 1px solid var(--v3-border);
  box-shadow: var(--v3-shadow-card);
}
.code-block-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px; border-bottom: 1px solid var(--v3-border);
  background: rgba(255,255,255,.02);
}
.code-block-tab { margin-left: 8px; font-family: var(--v3-mono); font-size: 12px; color: var(--v3-fg-3); letter-spacing: .04em; }
.code-block pre { margin: 0; padding: 20px 22px; overflow-x: auto; }
.code-block code {
  font-family: var(--v3-mono); font-size: 13px; line-height: 1.75;
  color: rgba(255,255,255,.82); white-space: pre;
}
.code-block .tk-key { color: #7FB3FF; }
.code-block .tk-str { color: var(--v3-gold-br); }
.code-block .tk-comment { color: var(--v3-fg-3); }
.code-block.is-prompt pre code { color: var(--v3-fg); }
.copy-btn {
  margin-left: auto; padding: 5px 16px; border-radius: var(--v3-pill);
  border: 1px solid var(--v3-border-2); color: var(--v3-fg-2);
  font-size: 12px; font-weight: 500;
  transition: color 200ms, border-color 200ms, background 200ms;
}
.copy-btn:hover { color: var(--v3-fg); border-color: rgba(255,255,255,.3); background: rgba(255,255,255,.04); }
.copy-btn.is-done { color: var(--v3-cyan); border-color: rgba(45,212,238,.5); }

/* ── 20. 接入方式三卡切换（docs 页） ───────────────────────────────────── */
.method-tabs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin: 32px 0 40px; gap: 18px; }
.method-tabs > * { min-width: 0; }
.method-tab {
  position: relative; text-align: left; padding: 22px 22px 20px;
  background: var(--v3-bg-card); border: 1px solid var(--v3-border);
  border-radius: var(--v3-radius); box-shadow: var(--v3-shadow-card);
  transition: transform 300ms var(--v3-ease), border-color 300ms var(--v3-ease);
}
.method-tab:hover { transform: translateY(-3px); border-color: var(--v3-border-2); }
.method-tab.is-active { border-color: rgba(46,107,255,.55); background: linear-gradient(180deg, rgba(46,107,255,.09), rgba(46,107,255,0)), var(--v3-bg-card); }
.method-tab-num { font-family: var(--v3-mono); font-size: 11.5px; letter-spacing: .14em; color: var(--v3-blue-br); text-transform: uppercase; margin-bottom: 10px; }
.method-tab h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.method-tab p { font-size: 13.5px; color: var(--v3-fg-2); line-height: 1.65; }
.method-tab-tag {
  position: absolute; top: 18px; right: 18px;
  font-family: var(--v3-mono); font-size: 10.5px; font-weight: 700; letter-spacing: .1em;
  color: var(--v3-gold-br); background: var(--v3-tint-gold); border: 1px solid var(--v3-gold-line);
  padding: 3px 10px; border-radius: var(--v3-pill);
}
.method-panel { display: none; }
.method-panel.is-active { display: block; animation: panel-in 420ms var(--v3-ease); }
@keyframes panel-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* 下载安装包卡片 */
.download-card {
  display: flex; align-items: center; gap: 22px; margin: 24px 0;
  background: var(--v3-bg-card); border: 1px solid var(--v3-border);
  border-radius: var(--v3-radius); padding: 26px; box-shadow: var(--v3-shadow-card);
}
.dl-icon {
  flex-shrink: 0; width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: var(--v3-tint-blue); border: 1px solid rgba(46,107,255,.3); color: var(--v3-cyan);
}
.dl-icon svg { width: 26px; height: 26px; }
.dl-info { flex: 1; min-width: 0; }
.dl-name { font-family: var(--v3-mono); font-size: 15px; font-weight: 600; margin-bottom: 6px; word-break: break-all; }
.dl-desc { font-size: 13.5px; color: var(--v3-fg-2); line-height: 1.6; margin-bottom: 12px; }
.dl-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.dl-tags span {
  font-family: var(--v3-mono); font-size: 11px; color: var(--v3-fg-3);
  background: rgba(255,255,255,.05); border: 1px solid var(--v3-border);
  padding: 3px 9px; border-radius: var(--v3-pill);
}
.download-card .btn { flex-shrink: 0; }

/* ── 21. 工具表 + 示例卡（docs 页） ────────────────────────────────────── */
.tool-table { width: 100%; border-collapse: collapse; margin: 28px 0 32px; }
.tool-table th {
  text-align: left; font-family: var(--v3-mono); font-size: 11.5px; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase; color: var(--v3-fg-3);
  padding: 0 16px 14px 0; border-bottom: 1px solid var(--v3-border-2);
}
.tool-table td { padding: 16px 16px 16px 0; border-bottom: 1px solid var(--v3-border); vertical-align: top; font-size: 14px; color: var(--v3-fg-2); line-height: 1.7; }
.tool-table td:nth-child(2) { color: var(--v3-fg); font-weight: 600; white-space: nowrap; }
.tool-table td code { font-family: var(--v3-mono); font-size: 13px; color: #7FB3FF; background: none; padding: 0; }
.tool-example {
  margin: 0; padding: 26px;
  background: linear-gradient(150deg, rgba(46,107,255,.07), rgba(255,255,255,.018) 58%);
  border: 1px solid var(--v3-border);
  border-radius: var(--v3-radius);
  box-shadow: var(--v3-shadow-card);
}
.tool-example--wide {
  grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0,.9fr) minmax(0,1.1fr);
  gap: 32px; align-items: center;
  background: linear-gradient(135deg, rgba(46,107,255,.11), rgba(45,212,238,.035)), var(--v3-bg-card);
  border-color: rgba(46,107,255,.34);
}
.tool-example .te-title { font-weight: 700; font-size: 18px; margin: 13px 0 9px; }
.tool-example p { font-size: 14px; color: var(--v3-fg-2); line-height: 1.9; margin: 0; }
.tool-example code { font-family: var(--v3-mono); font-size: 12.5px; color: #7FB3FF; background: rgba(46,107,255,.10); padding: 2px 7px; border-radius: 6px; }
.tool-example pre {
  max-width: 100%; margin: 20px 0 0; padding: 18px;
  overflow-x: auto; border: 1px solid var(--v3-border);
  border-radius: var(--v3-radius-sm); background: rgba(2,5,10,.50);
}
.tool-example pre code { display: block; width: max-content; min-width: 100%; padding: 0; border-radius: 0; background: transparent; line-height: 1.75; }
.config-pill {
  display: inline-flex; padding: 4px 9px; border: 1px solid var(--v3-border-2);
  border-radius: var(--v3-pill); color: var(--v3-cyan);
  font-family: var(--v3-mono); font-size: 10.5px; font-weight: 700; letter-spacing: .07em;
}
.config-params {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px; overflow: hidden; margin: 0;
  border: 1px solid var(--v3-border); border-radius: var(--v3-radius-sm);
  background: var(--v3-border);
}
.config-params > div { min-width: 0; padding: 15px 16px; background: rgba(6,10,17,.92); }
.config-params dt {
  margin-bottom: 7px; color: var(--v3-fg-3);
  font-family: var(--v3-mono); font-size: 10px; letter-spacing: .10em; text-transform: uppercase;
}
.config-params dd { margin: 0; color: var(--v3-fg); font-size: 13.5px; line-height: 1.55; }
.config-params code { display: block; overflow-wrap: anywhere; background: none; padding: 0; }
.website-entry {
  display: flex; align-items: center; justify-content: space-between; gap: 28px;
  margin-top: 32px; padding: 22px 24px;
  border: 1px solid var(--v3-border); border-radius: var(--v3-radius);
  background: linear-gradient(135deg, rgba(46,107,255,.08), rgba(45,212,238,.025));
}
.website-entry strong { display: block; margin-bottom: 6px; font-size: 15.5px; }
.website-entry p { color: var(--v3-fg-2); font-size: 13.5px; line-height: 1.65; }
.website-entry .btn { flex: 0 0 auto; }

/* ── 22. 价格页 ────────────────────────────────────────────────────────── */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.pricing-card {
  position: relative; z-index: 1; display: flex; flex-direction: column;
  padding: 34px 30px; border-radius: var(--v3-radius);
  background: var(--v3-bg-card); border: 1px solid var(--v3-border);
  box-shadow: var(--v3-shadow-card);
  transition: transform 320ms var(--v3-ease), border-color 320ms var(--v3-ease);
}
.pricing-card:hover,
.pricing-card:focus-within {
  z-index: 30; transform: translateY(-4px); border-color: var(--v3-border-2);
}
.pricing-card-featured {
  border-color: rgba(46,107,255,.55);
  background: linear-gradient(180deg, rgba(46,107,255,.10), rgba(46,107,255,0) 55%), var(--v3-bg-card);
}
.pricing-card-featured::before {
  content: ""; position: absolute; top: 0; left: 12%; right: 12%; height: 2px;
  background: var(--v3-grad); border-radius: 0 0 4px 4px;
}
.pricing-card-soon { border-style: dashed; border-color: var(--v3-border-2); opacity: .8; }
.pricing-card-soon .pricing-price { color: var(--v3-fg-2); font-size: 26px; }
.pricing-card-soon .btn { opacity: .55; cursor: not-allowed; }
.pricing-card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.pricing-card-head h2 { font-size: 20px; font-weight: 700; letter-spacing: .01em; }
.pricing-price {
  font-family: var(--v3-display); font-size: 34px; font-weight: 700; line-height: 1.2;
  margin-bottom: 10px; font-variant-numeric: tabular-nums;
}
.pricing-card:not(.pricing-card-soon) .pricing-price {
  background: var(--v3-grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.pricing-desc { color: var(--v3-fg-2); font-size: 14px; line-height: 1.7; margin: 0 0 22px; }
.pricing-features {
  flex: 1 0 auto; display: flex; flex-direction: column; gap: 11px;
  color: var(--v3-fg-2); font-size: 14px; line-height: 1.6; margin-bottom: 8px;
}
.pricing-features li { position: relative; padding-left: 24px; }
.pricing-features li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--v3-cyan); font-weight: 700; font-size: 13px;
}
.pricing-card .btn { margin-top: 26px; align-self: stretch; }
.team-contact { position: relative; margin-top: 26px; }
.team-contact summary { width: 100%; margin-top: 0; list-style: none; cursor: pointer; }
.team-contact summary::-webkit-details-marker { display: none; }
.team-contact-popover {
  position: absolute; z-index: 20; left: 50%; bottom: calc(100% + 14px);
  display: grid; justify-items: center; gap: 8px; width: 252px; padding: 14px;
  transform: translate(-50%, 8px); opacity: 0; pointer-events: none;
  border: 1px solid var(--v3-border-2); border-radius: var(--v3-radius);
  background: rgba(8,13,23,.98); box-shadow: 0 24px 70px rgba(0,0,0,.5);
  transition: opacity 180ms ease, transform 180ms ease;
}
.team-contact-popover::after {
  content: ""; position: absolute; left: 50%; top: 100%; width: 12px; height: 12px;
  transform: translate(-50%,-6px) rotate(45deg); background: rgba(8,13,23,.98);
  border-right: 1px solid var(--v3-border-2); border-bottom: 1px solid var(--v3-border-2);
}
.team-contact-popover img { width: 220px; height: 220px; border-radius: 10px; background: #fff; }
.team-contact-popover strong { font-size: 14px; }
.team-contact-popover span,
.team-contact-popover a { color: var(--v3-fg-3); font-size: 11.5px; text-align: center; }
.team-contact:hover .team-contact-popover,
.team-contact:focus-within .team-contact-popover,
.team-contact[open] .team-contact-popover {
  opacity: 1; pointer-events: auto; transform: translate(-50%,0);
}
.soon-badge {
  display: inline-flex; align-items: center;
  font-family: var(--v3-mono); font-size: 10.5px; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--v3-fg-3); background: rgba(255,255,255,.06);
  border: 1px solid var(--v3-border-2); padding: 3px 10px; border-radius: var(--v3-pill);
}

/* ── 23. 内页响应式补充 ────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .method-tabs { grid-template-columns: 1fr; }
  .tool-example--wide { grid-column: auto; grid-template-columns: 1fr; gap: 24px; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
}
@media (max-width: 640px) {
  .page-head { padding: 56px 0 32px; }
  .download-card { flex-direction: column; align-items: flex-start; gap: 16px; }
  .download-card .btn { width: 100%; }
  .tool-table th:nth-child(2), .tool-table td:nth-child(2) { display: none; }
  .tool-example { padding: 22px 20px; }
  .config-params { grid-template-columns: 1fr; }
  .website-entry { align-items: stretch; flex-direction: column; margin-top: 28px; padding: 20px; }
  .website-entry .btn { width: 100%; justify-content: center; }
  .team-contact-popover { position: static; width: 100%; margin-top: 12px; transform: none; }
  .team-contact-popover::after { display: none; }
  .team-contact[open] .team-contact-popover { transform: none; }
}

/* ── 24. 价格页补充：Pro 价格副行 / 金色徽标 / 灰度说明 ───────────────── */
.pricing-price .u { font-size: .45em; font-weight: 600; margin-left: 2px; }
.pricing-price-sub { font-size: 13px; color: var(--v3-fg-3); margin: -2px 0 14px; font-variant-numeric: tabular-nums; }
.gold-badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-family: var(--v3-mono); font-size: 10.5px; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--v3-gold-br); background: var(--v3-tint-gold);
  border: 1px solid var(--v3-gold-line); padding: 3px 10px; border-radius: var(--v3-pill);
}
.gold-badge::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--v3-gold); }
.pricing-note {
  margin-top: 32px; text-align: center;
  font-size: 13.5px; color: var(--v3-fg-3); line-height: 1.8;
}
.pricing-note a { color: var(--v3-cyan); }

/* ── 25. 工具网格尾注（更多工具规划中） ────────────────────────────────── */
.tools-more {
  margin-top: 30px; text-align: center;
  font-family: var(--v3-mono); font-size: 12.5px; letter-spacing: .10em;
  color: var(--v3-fg-3);
}
.tools-more .plus { color: var(--v3-gold-br); margin-right: 6px; }

/* ── 26. T34 信息架构组件（沿用 Aurora token） ───────────────────────── */
.skip-link {
  position: fixed; top: 10px; left: 10px; z-index: 500;
  transform: translateY(-160%);
  padding: 9px 14px; border-radius: var(--v3-pill);
  background: var(--v3-fg); color: var(--v3-bg); font-weight: 700;
}
.skip-link:focus { transform: none; }
.nav-brand .status-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--v3-gold); box-shadow: 0 0 9px rgba(217,164,65,.7);
}
.status-pill {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 4px 10px; border: 1px solid var(--v3-border-2);
  border-radius: var(--v3-pill); font-family: var(--v3-mono);
  font-size: 10.5px; font-weight: 700; letter-spacing: .07em;
  text-transform: uppercase; color: var(--v3-fg-2); background: rgba(255,255,255,.035);
}
.status-pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.status-pill--accepted { color: var(--v3-cyan); border-color: rgba(45,212,238,.32); background: rgba(45,212,238,.07); }
.status-pill--gold { color: var(--v3-gold-br); border-color: var(--v3-gold-line); background: var(--v3-tint-gold); }
.status-pill--pending { color: var(--v3-fg-3); }
.fact-grid, .boundary-grid, .resource-grid, .journey-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.fact-card, .resource-card, .boundary-card, .journey-card {
  position: relative; padding: 26px;
  background: var(--v3-bg-card); border: 1px solid var(--v3-border);
  border-radius: var(--v3-radius); box-shadow: var(--v3-shadow-card);
}
.fact-card h3, .resource-card h3, .boundary-card h3, .journey-card h3 {
  margin: 16px 0 9px; font-size: 18px; line-height: 1.4;
}
.fact-card p, .resource-card p, .boundary-card p, .journey-card p {
  color: var(--v3-fg-2); font-size: 14px; line-height: 1.75;
}
.fact-card .fact-value {
  margin: 18px 0 3px; font-family: var(--v3-display);
  font-size: 36px; font-weight: 700; line-height: 1.15;
}
.fact-card .fact-value small { font-family: var(--v3-font); font-size: 14px; color: var(--v3-fg-3); }
.coverage-board {
  overflow: hidden; border: 1px solid var(--v3-border);
  border-radius: var(--v3-radius); background: var(--v3-bg-card);
  box-shadow: var(--v3-shadow-card);
}
.coverage-row {
  display: grid; grid-template-columns: 180px minmax(0, 1fr) 180px;
  gap: 24px; align-items: center; padding: 24px 26px;
  border-bottom: 1px solid var(--v3-border);
}
.coverage-row:last-child { border-bottom: 0; }
.coverage-row h3 { font-size: 15.5px; margin-bottom: 3px; }
.coverage-row p { color: var(--v3-fg-3); font-size: 12.5px; line-height: 1.6; }
.coverage-value { font-family: var(--v3-mono); color: var(--v3-fg-2); font-size: 12.5px; text-align: right; }
.coverage-track {
  height: 8px; overflow: hidden; border-radius: var(--v3-pill);
  background: rgba(255,255,255,.06);
}
.coverage-fill { height: 100%; border-radius: inherit; background: var(--v3-grad); }
.coverage-fill--gold { background: linear-gradient(90deg, var(--v3-gold), var(--v3-gold-br)); }
.coverage-fill--muted { background: var(--v3-fg-3); }
.truth-table-wrap { overflow-x: auto; border: 1px solid var(--v3-border); border-radius: var(--v3-radius); }
.truth-table { width: 100%; min-width: 720px; border-collapse: collapse; background: var(--v3-bg-card); }
.truth-table th, .truth-table td { padding: 17px 19px; text-align: left; border-bottom: 1px solid var(--v3-border); vertical-align: top; }
.truth-table tr:last-child td { border-bottom: 0; }
.truth-table th {
  color: var(--v3-fg-3); font-family: var(--v3-mono); font-size: 11px;
  letter-spacing: .11em; text-transform: uppercase; background: rgba(255,255,255,.018);
}
.truth-table td { color: var(--v3-fg-2); font-size: 13.5px; line-height: 1.65; }
.truth-table td:first-child { color: var(--v3-fg); font-weight: 700; }
.truth-table code, .resource-uri {
  font-family: var(--v3-mono); color: #7FB3FF; font-size: 12px; overflow-wrap: anywhere;
}
.callout {
  margin: 24px 0; padding: 20px 22px; border-radius: var(--v3-radius-sm);
  border: 1px solid var(--v3-border-2); background: rgba(255,255,255,.025);
}
.callout--gold { border-color: var(--v3-gold-line); background: var(--v3-tint-gold); }
.callout--blue { border-color: rgba(46,107,255,.35); background: var(--v3-tint-blue); }
.callout strong { display: block; margin-bottom: 5px; color: var(--v3-fg); }
.callout p { margin: 0; color: var(--v3-fg-2); font-size: 14px; line-height: 1.75; }
.state-list { display: grid; gap: 12px; }
.state-item {
  display: grid; grid-template-columns: 150px 1fr; gap: 18px;
  padding: 17px 18px; border: 1px solid var(--v3-border); border-radius: var(--v3-radius-sm);
  background: rgba(255,255,255,.018);
}
.state-item dt { font-family: var(--v3-mono); font-size: 12px; color: #7FB3FF; }
.state-item dd { margin: 0; color: var(--v3-fg-2); font-size: 14px; line-height: 1.7; }
.internal-entry {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px;
  padding: 34px; border: 1px solid var(--v3-gold-line); border-radius: 22px;
  background: linear-gradient(135deg, rgba(217,164,65,.09), rgba(46,107,255,.08)), var(--v3-bg-card);
  box-shadow: var(--v3-shadow-pop);
}
.internal-entry h2 { font-family: var(--v3-display); font-size: clamp(28px, 3.2vw, 38px); margin: 14px 0; }
.internal-entry p { color: var(--v3-fg-2); }
.internal-entry .entry-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.gate-list { display: grid; gap: 10px; align-content: center; }
.gate-item { display: flex; gap: 11px; color: var(--v3-fg-2); font-size: 13.5px; }
.gate-item::before { content: "✓"; color: var(--v3-cyan); font-weight: 800; }
.gate-item--pending::before { content: "○"; color: var(--v3-gold-br); }
.evidence-note {
  margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--v3-border);
  color: var(--v3-fg-3); font-family: var(--v3-mono); font-size: 11.5px; line-height: 1.65;
}
.inline-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.inline-list span {
  padding: 4px 9px; border: 1px solid var(--v3-border);
  border-radius: var(--v3-pill); color: var(--v3-fg-3); font-family: var(--v3-mono); font-size: 10.5px;
}
.legacy-route-note { color: var(--v3-fg-3); font-size: 12.5px; text-align: center; margin-top: 26px; }
.legal-meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 34px; }
.legal-meta span { padding: 4px 10px; border: 1px solid var(--v3-border); border-radius: var(--v3-pill); color: var(--v3-fg-3); font-size: 11.5px; }

@media (max-width: 1040px) {
  .nav-links a { padding-inline: 9px; }
  .nav-in { gap: 16px; }
}
@media (max-width: 900px) {
  .fact-grid, .boundary-grid, .resource-grid, .journey-grid { grid-template-columns: 1fr; }
  .internal-entry { grid-template-columns: 1fr; }
  .coverage-row { grid-template-columns: 1fr; gap: 12px; }
  .coverage-value { text-align: left; }
}
@media (max-width: 640px) {
  .fact-card, .resource-card, .boundary-card, .journey-card { padding: 22px; }
  .coverage-row { padding: 21px; }
  .state-item { grid-template-columns: 1fr; gap: 7px; }
  .internal-entry { padding: 24px 20px; }
}

/* ── 27. 404 页 ────────────────────────────────────────────────────────── */
.notfound { min-height: 52vh; display: grid; place-items: center; text-align: center; }
.notfound-links { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 26px; }

/* 定价卡内的分档小标（「含以下全部」等） */
.pricing-sub {
  margin: 22px 0 12px; font-family: var(--v3-mono);
  font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--v3-fg-3);
}

/* ── 28. v3.3 客户价值与渐进式披露 ───────────────────────────────────── */
.hero-actions--left { justify-content: flex-start; margin-top: 28px; }

.scenario-tabs {
  max-width: 860px; margin: 58px auto 14px;
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px;
  padding: 6px; border: 1px solid var(--v3-border);
  border-radius: var(--v3-pill); background: rgba(255,255,255,.025);
}
.scenario-tab {
  min-height: 44px; padding: 9px 16px; border-radius: var(--v3-pill);
  color: var(--v3-fg-3); font-size: 13.5px; font-weight: 600;
  transition: color 180ms var(--v3-ease), background 180ms var(--v3-ease), box-shadow 180ms var(--v3-ease);
}
.scenario-tab:hover { color: var(--v3-fg); }
.scenario-tab.is-active {
  color: #fff; background: linear-gradient(135deg, rgba(46,107,255,.85), rgba(45,212,238,.45));
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.18), 0 8px 22px rgba(46,107,255,.20);
}
.scenario-panel[hidden] { display: none; }
.scenario-panel .dc-body { min-height: 350px; justify-content: center; }
.result-kicker {
  font-family: var(--v3-mono); font-size: 11px; font-weight: 700;
  color: var(--v3-cyan); letter-spacing: .10em; text-transform: uppercase;
}
.result-icon {
  display: inline-grid; place-items: center; width: 36px; height: 36px;
  border-radius: 10px; color: var(--v3-cyan); background: var(--v3-tint-blue);
  border: 1px solid rgba(46,107,255,.30); font-family: var(--v3-display); font-weight: 700;
}
.text-link {
  display: inline-block; margin-top: 18px; color: #8FC1FF; font-size: 13px; font-weight: 700;
}
.text-link:hover { color: var(--v3-cyan); }

.route-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px;
}
.route-card {
  display: grid; min-height: 210px; align-content: start;
  padding: 28px; border: 1px solid var(--v3-border); border-radius: var(--v3-radius);
  background: var(--v3-bg-card); box-shadow: var(--v3-shadow-card);
  transition: transform 260ms var(--v3-ease), border-color 260ms var(--v3-ease), background 260ms var(--v3-ease);
}
.route-card:hover {
  transform: translateY(-3px); border-color: var(--v3-border-2);
  background: linear-gradient(135deg, rgba(46,107,255,.08), rgba(45,212,238,.025)), var(--v3-bg-card);
}
.route-card > span {
  font-family: var(--v3-mono); font-size: 11px; color: var(--v3-gold-br); letter-spacing: .12em;
}
.route-card h3 { margin: 16px 0 9px; font-size: 20px; }
.route-card p { color: var(--v3-fg-2); font-size: 14px; line-height: 1.75; }
.route-card strong { margin-top: auto; padding-top: 22px; color: #8FC1FF; font-size: 13px; }

.journey-card { display: flex; flex-direction: column; }
.journey-card > strong { margin-top: auto; padding-top: 20px; color: #8FC1FF; font-size: 13px; }
.journey-card--primary {
  border-color: rgba(46,107,255,.48);
  background: linear-gradient(180deg, rgba(46,107,255,.10), transparent 70%), var(--v3-bg-card);
}
.pricing-card .btn, .pricing-card > .btn-disabled { width: 100%; text-align: center; justify-content: center; }

@media (max-width: 900px) {
  .scenario-tabs { grid-template-columns: 1fr; border-radius: var(--v3-radius); }
  .scenario-tab { border-radius: var(--v3-radius-sm); }
}
@media (max-width: 640px) {
  .scenario-tabs { margin-top: 42px; }
  .scenario-panel .dc-body { min-height: 390px; }
  .route-grid { grid-template-columns: 1fr; }
  .route-card { min-height: auto; }
}