/* ============================================================
   云烯 Material Agent Studio · 官网设计系统 v2
   浅色精品版 · oklch 绿色体系 · Sora 显示字体 · 原生 CSS 零依赖
   ============================================================ */

/* ── 自托管字体（Sora：标题/数字/英文小标） ── */
@font-face {
  font-family: "Sora"; font-style: normal; font-weight: 400; font-display: swap;
  src: url("../fonts/sora-400.woff2") format("woff2");
}
@font-face {
  font-family: "Sora"; font-style: normal; font-weight: 600; font-display: swap;
  src: url("../fonts/sora-600.woff2") format("woff2");
}
@font-face {
  font-family: "Sora"; font-style: normal; font-weight: 700; font-display: swap;
  src: url("../fonts/sora-700.woff2") format("woff2");
}
@font-face {
  font-family: "Sora"; font-style: normal; font-weight: 800; font-display: swap;
  src: url("../fonts/sora-800.woff2") format("woff2");
}

:root {
  color-scheme: light;
  --bg: oklch(96.8% 0.007 115);
  --surface: oklch(99.3% 0.003 110);
  --surface-2: oklch(95.8% 0.008 135);
  --surface-3: oklch(93.6% 0.011 140);
  --text: oklch(22% 0.02 162);
  --muted: oklch(45% 0.013 160);
  --faint: oklch(60% 0.011 155);
  --line: oklch(88.5% 0.008 140);
  --line-strong: oklch(80% 0.013 145);
  --accent: oklch(56% 0.12 160);
  --accent-soft: oklch(94.8% 0.032 160);
  --accent-strong: oklch(40% 0.093 160);
  --accent-ink: oklch(30% 0.07 162);
  --accent-contrast: oklch(98% 0.006 160);
  --ink: oklch(21% 0.032 163);
  --ink-2: oklch(28% 0.045 162);
  --thinking: #6366f1;
  --warning: oklch(67% 0.11 87);
  --radius-xl: 30px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --shadow-lg: 0 40px 90px rgba(22, 34, 27, 0.14);
  --shadow-md: 0 24px 60px rgba(22, 34, 27, 0.09);
  --shadow-sm: 0 12px 34px rgba(22, 34, 27, 0.06);
  --shadow-xs: 0 4px 14px rgba(22, 34, 27, 0.05);
  --font-body: "Sora", -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-display: "Sora", -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── 深色主题（导航切换，本地记忆；模拟台同样跟随深色） ── */
[data-theme="dark"] {
  color-scheme: dark;
  --bg: oklch(16.5% 0.014 160);
  --surface: oklch(20.5% 0.013 160);
  --surface-2: oklch(24% 0.015 158);
  --surface-3: oklch(27.5% 0.017 158);
  --text: oklch(93% 0.008 155);
  --muted: oklch(73% 0.012 158);
  --faint: oklch(58% 0.011 158);
  --line: oklch(30% 0.013 158);
  --line-strong: oklch(38% 0.016 158);
  --accent: oklch(70% 0.115 162);
  --accent-soft: oklch(29% 0.038 162);
  --accent-strong: oklch(80% 0.1 162);
  --accent-ink: oklch(89% 0.05 160);
  --accent-contrast: oklch(13% 0.028 162);
  --shadow-lg: 0 40px 90px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 24px 60px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 12px 34px rgba(0, 0, 0, 0.28);
  --shadow-xs: 0 4px 14px rgba(0, 0, 0, 0.22);
}
[data-theme="dark"] .hero-bg {
  background:
    radial-gradient(38% 42% at 20% 28%, oklch(35% 0.06 158 / 0.5), transparent 70%),
    radial-gradient(34% 38% at 80% 20%, oklch(32% 0.05 175 / 0.45), transparent 70%),
    radial-gradient(30% 34% at 55% 62%, oklch(30% 0.04 140 / 0.4), transparent 70%);
}
[data-theme="dark"] body::after { opacity: .05; }
[data-theme="dark"] .btn-primary { color: oklch(14% 0.03 160); }
[data-theme="dark"] .brand-mark { box-shadow: inset 0 1px 0 rgba(255,255,255,.2); }
[data-theme="dark"] .topbar {
  background:
    radial-gradient(140% 130% at 8% 0%, color-mix(in oklab, var(--accent), transparent 94%), transparent 52%),
    color-mix(in oklab, var(--surface), transparent 18%);
}
[data-theme="dark"] .topbar.is-scrolled { background: color-mix(in oklab, var(--surface), transparent 8%); }
[data-theme="dark"] .sim-frame { border-color: var(--line-strong); }

/* 主题切换按钮 */
.theme-toggle {
  width: 36px; height: 36px; flex: none;
  display: grid; place-items: center;
  border: 1px solid var(--line); border-radius: 999px;
  background: transparent; color: var(--muted); cursor: pointer;
}
.theme-toggle:hover { color: var(--text); border-color: var(--line-strong); background: var(--surface-2); }
.theme-toggle svg { width: 16px; height: 16px; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun, :root:not([data-theme]) .icon-sun { display: none; }

/* ── 移动端导航抽屉（大厂级侧栏，仅 ≤760px 显示汉堡） ── */
.nav-menu-toggle {
  display: none;
  align-items: center; justify-content: center;
  width: 36px; height: 36px; margin-left: auto;
  border: 1px solid var(--line); border-radius: 999px;
  background: transparent; color: var(--muted);
  cursor: pointer;
}
.nav-menu-toggle:hover { color: var(--text); background: var(--surface-2); border-color: var(--line-strong); }
.nav-menu-toggle svg { width: 18px; height: 18px; }
.nav-menu-toggle .icon-close { display: none; }
.nav-menu-toggle.is-open .icon-menu { display: none; }
.nav-menu-toggle.is-open .icon-close { display: block; }

/* 遮罩层 */
.nav-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.28);
  opacity: 0; pointer-events: none;
  transition: opacity .3s ease;
  z-index: 40;
}
.nav-overlay.is-open { opacity: 1; pointer-events: auto; }

@media (max-width: 760px) {
  .topbar { position: relative; }
  .topnav {
    position: absolute; top: calc(100% + 10px); right: 0;
    width: min(84vw, 320px);
    padding: 10px;
    display: flex; flex-direction: column; gap: 2px;
    background: color-mix(in oklab, var(--surface), transparent 4%);
    backdrop-filter: blur(24px) saturate(1.7);
    -webkit-backdrop-filter: blur(24px) saturate(1.7);
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transform: translateY(-10px) scale(.97);
    transform-origin: top right;
    opacity: 0; pointer-events: none;
    transition: transform .38s var(--ease-expo), opacity .3s ease;
    z-index: 46;
  }
  .topbar:has(.nav-menu-toggle.is-open) .topnav,
  .topnav.is-open {
    transform: none; opacity: 1; pointer-events: auto;
  }
  .topnav a {
    width: 100%; padding: 13px 16px; border-radius: 13px;
    font-size: 15px; font-weight: 600;
    display: flex; align-items: center; gap: 10px;
    color: var(--muted);
  }
  .topnav a:hover { color: var(--text); background: var(--surface-2); }
  .topnav a.active { color: var(--accent-strong); background: var(--accent-soft); }
  /* 返回顶部：独立分段置顶 */
  .topnav a.nav-top {
    justify-content: center;
    padding: 12px 16px; margin-bottom: 6px;
    border-bottom: 1px solid var(--line);
    border-radius: 13px 13px 0 0;
    color: var(--text); font-weight: 700;
  }
  .topnav a.nav-top svg { width: 16px; height: 16px; color: var(--accent-strong); }
  .nav-menu-toggle { display: inline-flex; }
  .theme-toggle { margin-left: 0; }
  .nav-cta { margin-left: 0; }
}

/* 返回顶部仅移动端下拉面板显示，桌面导航不需要 */
.topnav a.nav-top { display: none; }
@media (max-width: 760px) {
  .topnav a.nav-top { display: flex; }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; overflow-x: clip; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.75 var(--font-body);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button, a { transition: background-color .25s var(--ease-out), border-color .25s var(--ease-out), color .25s var(--ease-out), transform .25s var(--ease-out), box-shadow .25s var(--ease-out); }
button { font-family: inherit; }
img { max-width: 100%; display: block; }
::selection { background: color-mix(in oklab, var(--accent), transparent 75%); }
/* 深底色按钮上的文字选区：深绿底 + 浅字，两种主题下都可读 */
.btn-primary::selection, .btn-primary ::selection,
.nav-cta::selection, .nav-cta ::selection {
  background: oklch(24% 0.06 162); color: oklch(97% 0.01 160);
}

/* 极轻滚动条：平时隐形，悬停/滚动时才浮现（对标 Apple / Linear 处理） */
* { scrollbar-width: thin; scrollbar-color: transparent transparent; }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: transparent; border-radius: 8px; }
*:hover::-webkit-scrollbar-thumb { background: color-mix(in oklab, var(--line-strong), transparent 25%); }
*:hover::-webkit-scrollbar-thumb:hover { background: var(--faint); }
.wx-content::-webkit-scrollbar, .wx-nav::-webkit-scrollbar, .wx-tbl-wrap::-webkit-scrollbar { width: 5px; height: 5px; }

/* 全局细腻颗粒（纸感，近看才可见） */
body::after {
  content: ""; position: fixed; inset: 0; z-index: 999; pointer-events: none; opacity: .028;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

.shell { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }
.num, strong[data-count] { font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }

/* ── eyebrow（中英点缀小标） ── */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-size: 11.5px; font-weight: 700; letter-spacing: .22em; text-transform: uppercase;
  color: var(--accent-strong);
}
.eyebrow::before { content: ""; width: 22px; height: 1.5px; background: var(--accent); border-radius: 2px; }
.eyebrow.no-rule::before { display: none; }

/* ── 顶部导航：粘滞毛玻璃胶囊 ── */
.nav-wrap { position: sticky; top: 14px; z-index: 50; padding: 14px 24px 0; }
.topbar {
  max-width: 1160px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  padding: 10px 12px 10px 18px;
  border: 1px solid color-mix(in oklab, var(--line), var(--surface) 30%);
  border-radius: 999px;
  background:
    radial-gradient(140% 130% at 8% 0%, color-mix(in oklab, var(--accent), transparent 91%), transparent 52%),
    color-mix(in oklab, var(--surface), transparent 14%);
  backdrop-filter: blur(18px) saturate(1.5);
  -webkit-backdrop-filter: blur(18px) saturate(1.5);
  box-shadow: var(--shadow-xs);
  transition: box-shadow .35s var(--ease-out), background-color .35s var(--ease-out);
}
.topbar.is-scrolled { box-shadow: var(--shadow-sm); background: color-mix(in oklab, var(--surface), transparent 5%); }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 34px; height: 34px; display: grid; place-items: center;
  border-radius: 11px;
  background: linear-gradient(145deg, var(--accent), var(--accent-strong));
  color: var(--accent-contrast);
  font-weight: 800; font-size: 15px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.28), 0 4px 12px color-mix(in oklab, var(--accent), transparent 68%);
}
.brand-name { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name strong { font-size: 14.5px; letter-spacing: -0.01em; }
.brand-name span { font-family: var(--font-display); font-size: 9.5px; color: var(--muted); letter-spacing: .26em; text-transform: uppercase; }
.topnav { display: flex; align-items: center; gap: 2px; }
.topnav a { padding: 7px 13px; border-radius: 999px; font-size: 13.5px; font-weight: 600; color: var(--muted); }
.topnav a:hover { color: var(--text); background: var(--surface-2); }
.topnav a.active { color: var(--accent-strong); background: var(--accent-soft); }
.nav-cta {
  display: inline-flex; align-items: center; gap: 6px;
  min-height: 36px; padding: 0 17px;
  border-radius: 999px; border: 1px solid var(--accent);
  background: var(--accent); color: var(--accent-contrast);
  font-size: 13.5px; font-weight: 700;
}
.nav-cta:hover { background: var(--accent-strong); border-color: var(--accent-strong); transform: translateY(-1px); box-shadow: 0 8px 18px color-mix(in oklab, var(--accent), transparent 70%); }

/* ── Hero ── */
.hero { position: relative; padding: clamp(76px, 10vh, 124px) 0 34px; overflow: clip; }
.hero-bg {
  position: absolute; inset: -20% -10% auto; height: 820px; z-index: -1;
  background:
    radial-gradient(42% 46% at 18% 26%, oklch(86% 0.07 155 / 0.65), transparent 70%),
    radial-gradient(36% 40% at 78% 18%, oklch(89% 0.055 178 / 0.6), transparent 70%),
    radial-gradient(34% 38% at 52% 60%, oklch(91% 0.045 138 / 0.55), transparent 70%),
    radial-gradient(18% 22% at 88% 78%, oklch(85% 0.06 165 / 0.4), transparent 70%);
  filter: blur(14px);
  animation: hero-drift 26s ease-in-out infinite alternate;
}
@keyframes hero-drift {
  from { transform: translate3d(calc(-2% + var(--px, 0) * 18px), calc(-1.5% + var(--py, 0) * 14px), 0) scale(1) rotate(-0.5deg); }
  to   { transform: translate3d(calc(2% + var(--px, 0) * 18px), calc(2% + var(--py, 0) * 14px), 0) scale(1.07) rotate(0.5deg); }
}
/* 首屏向内容区平滑过渡，消除「浮空」感 */
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 140px;
  background: linear-gradient(180deg, transparent, var(--bg));
  pointer-events: none;
}
/* 向下滚动提示（大厂首屏常见，位置按视口分级兼容） */
.hero-scroll {
  position: absolute; left: 50%; bottom: clamp(14px, 4vh, 40px); z-index: 1;
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 50%;
  transform: translateX(-50%);
  color: var(--muted);
  opacity: 0; transition: opacity 1.2s var(--ease-out) 1.1s;
}
body.is-booted .hero-scroll { opacity: 1; }
.hero-scroll svg { width: 22px; height: 22px; animation: hero-hint 2.4s ease-in-out infinite; }
@keyframes hero-hint {
  0%, 100% { transform: translateY(0); opacity: .4; }
  50% { transform: translateY(6px); opacity: 1; }
}
@media (max-width: 900px) { .hero-scroll { bottom: clamp(12px, 3vh, 26px); } }
@media (max-width: 760px) { .hero-scroll { bottom: 14px; width: 34px; height: 34px; } }
@media (max-width: 420px) { .hero-scroll { display: none; } }
.hero-inner { position: relative; z-index: 1; max-width: 980px; }
.hero h1 {
  margin: 22px 0 20px;
  font-family: var(--font-display);
  font-size: clamp(38px, 5vw, 68px);
  line-height: 1.06; letter-spacing: -0.05em; font-weight: 800;
}
.hero-line { display: block; overflow: hidden; padding-bottom: 0.08em; margin-bottom: -0.08em; }
.hero-line > span {
  display: block; transform: translateY(112%); white-space: nowrap;
  transition: transform 1.1s var(--ease-expo);
}
body.is-booted .hero-line > span { transform: none; }
.hero-line:nth-child(2) > span { transition-delay: .12s; }
.hero-sub-en {
  font-family: var(--font-display);
  font-size: 12px; letter-spacing: .24em; text-transform: uppercase;
  color: var(--faint); font-weight: 600; margin: 0 0 18px;
}
.hero-lede { max-width: 58ch; margin: 0; color: var(--muted); font-size: 17px; line-height: 1.8; }
.hero-actions { display: flex; gap: 12px; margin-top: 34px; flex-wrap: wrap; }
/* 主标题末行品牌色强调 + 手绘下划线扫入（Apple 式短句收尾） */
.hero-line:last-child > span {
  position: relative;
  color: var(--accent);
  padding-bottom: .12em;
  margin-bottom: -.12em;
}
.hero-line:last-child > span::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: .02em; height: .13em;
  border-radius: 999px;
  background: color-mix(in oklab, var(--accent), transparent 70%);
  transform: scaleX(0); transform-origin: left center;
  transition: transform .9s var(--ease-expo) .95s;
}
body.is-booted .hero-line:last-child > span::after { transform: scaleX(1); }
/* 首屏可信凭证条：小图标 + 文字，细分隔线（Apple 式克制） */
.hero-trust { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero-trust span {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; color: var(--muted);
}
.hero-trust span + span { padding-left: 14px; border-left: 1px solid var(--line-strong); }
.hero-trust svg { width: 14px; height: 14px; color: var(--accent); flex: none; }
@media (max-width: 760px) {
  .hero-trust { gap: 10px 16px; }
  .hero-trust span + span { padding-left: 0; border-left: 0; }
}
.hero-fade { opacity: 0; transform: translateY(14px); transition: opacity 1s var(--ease-out) .35s, transform 1s var(--ease-out) .35s; }
body.is-booted .hero-fade { opacity: 1; transform: none; }
.hero-fade-d2 { transition-delay: .5s; }

/* ── 按钮 ── */
.btn {
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 11px 24px;
  border-radius: 999px; border: 1px solid var(--line);
  font-size: 14.5px; font-weight: 700; cursor: pointer;
  background: var(--surface); color: var(--text);
}
.btn:hover { border-color: var(--line-strong); background: var(--surface-2); transform: translateY(-1px); box-shadow: var(--shadow-xs); }
.btn:active { transform: translateY(0) scale(0.985); }
.btn-primary {
  background: linear-gradient(160deg, oklch(60% 0.12 160), var(--accent) 40%, var(--accent-strong));
  border-color: transparent; color: oklch(98% 0.006 160);
  box-shadow: 0 12px 28px color-mix(in oklab, var(--accent), transparent 70%), inset 0 1px 0 rgba(255,255,255,.22);
}
.btn-primary::after {
  content: ""; position: absolute; top: 0; left: -80%; width: 55%; height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.35), transparent);
  transform: skewX(-18deg); transition: left .7s var(--ease-out);
}
.btn-primary:hover::after { left: 130%; }
.btn-primary:hover {
  background: linear-gradient(160deg, oklch(53% 0.118 160), oklch(49% 0.112 160) 45%, oklch(36% 0.086 160));
  box-shadow: 0 16px 34px color-mix(in oklab, var(--accent), transparent 62%), inset 0 1px 0 rgba(255,255,255,.22);
  transform: translateY(-1px);
}
.btn svg { width: 16px; height: 16px; }

/* ── Section 基础 ── */
.section { padding: clamp(72px, 9vh, 116px) 0 0; }
.section-first { padding-top: clamp(48px, 6vh, 72px); }
.sim-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.sim-tags span {
  display: inline-flex; align-items: center; min-height: 26px; padding: 0 11px;
  border: 1px solid var(--line); border-radius: 999px;
  font-size: 12px; font-weight: 700; color: var(--muted); background: var(--surface);
}
.section-head { max-width: 760px; margin-bottom: 44px; }
.section-head h2 {
  margin: 16px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(30px, 3.8vw, 48px);
  line-height: 1.1; letter-spacing: -0.04em; font-weight: 800;
  text-wrap: balance;
}
.section-head p { margin: 0; color: var(--muted); font-size: 16.5px; max-width: 62ch; line-height: 1.8; }

/* ── 模拟台外框（浏览器窗格） ── */
.sim-frame {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: scale(0.965) translateY(26px); opacity: 0;
  transition: transform 1.1s var(--ease-expo), opacity 1.1s var(--ease-out);
}
.sim-frame.is-visible { transform: none; opacity: 1; }
.sim-chrome {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}
.sim-dots { display: flex; gap: 6px; }
.sim-dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); }
.sim-dots i:nth-child(1) { background: oklch(72% 0.12 30); }
.sim-dots i:nth-child(2) { background: oklch(78% 0.12 90); }
.sim-dots i:nth-child(3) { background: oklch(72% 0.11 155); }
.sim-url {
  flex: 1; display: flex; align-items: center; gap: 7px;
  min-height: 28px; padding: 0 12px; max-width: 400px; margin: 0 auto;
  border: 1px solid var(--line); border-radius: 8px;
  background: var(--surface); color: var(--muted); font-size: 12px;
}
.sim-url svg { width: 12px; height: 12px; flex: none; }
.sim-tour-btn {
  display: inline-flex; align-items: center; gap: 6px;
  min-height: 28px; padding: 0 12px;
  border: 1px solid var(--line); border-radius: 999px;
  background: var(--surface); color: var(--muted);
  font-size: 12px; font-weight: 700; cursor: pointer;
}
.sim-tour-btn:hover { color: var(--text); border-color: var(--line-strong); }
.sim-tour-btn.playing { color: var(--accent-strong); border-color: color-mix(in oklab, var(--accent), var(--line) 60%); background: var(--accent-soft); }
.sim-tour-btn svg { width: 12px; height: 12px; }

/* ── 模拟台本体 ── */
.wx-shell {
  display: grid; grid-template-columns: 216px minmax(0, 1fr);
  height: 600px; min-height: 0;
  background: var(--surface-2);
  font-size: 13px; line-height: 1.55; color: var(--text);
}
.wx-sidebar {
  display: flex; flex-direction: column; gap: 10px; padding: 14px 10px;
  background: color-mix(in oklab, var(--surface), var(--surface-2) 26%);
  border-right: 1px solid var(--line); min-height: 0; overflow: hidden;
}
.wx-brand { display: flex; align-items: center; gap: 10px; padding: 0 4px; }
.wx-brand-mark {
  width: 32px; height: 32px; display: grid; place-items: center; flex: none;
  background: var(--text); color: var(--surface);
  border-radius: 9px; font-weight: 800; font-size: 15px;
}
.wx-brand strong, .wx-brand span { display: block; line-height: 1.25; }
.wx-brand strong { font-size: 13px; }
.wx-brand span { font-size: 10.5px; color: var(--muted); }
.wx-nav { display: grid; align-content: start; gap: 1px; min-height: 0; overflow: auto; }
.wx-nav-item {
  display: flex; align-items: center; gap: 9px; min-height: 34px; padding: 6px 9px;
  border: 1px solid transparent; border-radius: 8px; background: transparent;
  color: var(--muted); cursor: pointer; text-align: left; font-size: 12.5px; font-weight: 600;
}
.wx-nav-item:hover { background: color-mix(in oklab, var(--surface-3), transparent 28%); }
.wx-nav-item.wx-active {
  background: var(--accent-soft); border-color: color-mix(in oklab, var(--accent), var(--line) 68%);
  color: var(--accent-strong);
}
.wx-nav-item svg { width: 15px; height: 15px; flex: none; }
.wx-demo-badge {
  margin-top: auto; padding: 9px 10px;
  border: 1px dashed color-mix(in oklab, var(--warning), var(--line) 40%);
  border-radius: 9px;
  background: color-mix(in oklab, var(--warning), var(--surface) 92%);
  color: color-mix(in oklab, var(--warning), var(--text) 30%);
  font-size: 10.5px; line-height: 1.5;
}
.wx-workspace { display: grid; grid-template-rows: 54px minmax(0, 1fr) 26px; min-height: 0; overflow: hidden; }
.wx-topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 0 14px 0 18px; border-bottom: 1px solid var(--line);
  background: var(--surface); min-width: 0;
}
.wx-page-heading span { color: var(--muted); font-size: 10.5px; }
.wx-page-heading h1 { margin: 1px 0 0; font-size: 16px; line-height: 1.2; letter-spacing: -0.01em; }
.wx-preview-badge {
  display: inline-flex; align-items: center; min-height: 20px; padding: 0 8px;
  border: 1px solid color-mix(in oklab, var(--warning), var(--surface) 55%);
  border-radius: 999px; background: color-mix(in oklab, var(--warning), var(--surface) 82%);
  color: color-mix(in oklab, var(--warning), var(--text) 55%); font-weight: 700; font-size: 10.5px;
}
.wx-content {
  padding: 14px 16px 20px; overflow: auto; min-height: 0;
  background: linear-gradient(180deg, color-mix(in oklab, var(--surface-2), var(--surface) 32%), var(--surface-2) 180px);
}
.wx-statusbar {
  display: flex; align-items: center; gap: 14px; padding: 0 14px;
  border-top: 1px solid var(--line); background: var(--surface);
  font-size: 10.5px; color: var(--muted);
}
.wx-status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); display: inline-block; margin-right: 4px; }

/* widget 内部组件 */
.wx-page-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; align-content: start; }
.wx-span-2 { grid-column: span 2; }
.wx-span-3 { grid-column: span 3; }
.wx-panel, .wx-table-card {
  border: 1px solid var(--line); background: var(--surface);
  border-radius: 13px; box-shadow: 0 1px 2px color-mix(in oklab, var(--text), transparent 96%); padding: 13px 15px; display: grid; gap: 9px;
  align-content: start;
}
.wx-panel-title { display: flex; align-items: center; gap: 10px; }
.wx-panel-title h3 { margin: 0; font-size: 13.5px; }
.wx-panel-body p { margin: 0 0 5px; font-size: 12px; color: var(--muted); }
.wx-pill {
  display: inline-flex; align-items: center; min-height: 18px; padding: 0 7px;
  border-radius: 999px; font-size: 10.5px; font-weight: 700;
  background: var(--accent-soft); color: var(--accent-strong);
  border: 1px solid color-mix(in oklab, var(--accent), var(--line) 68%);
}
.wx-pill.neutral { background: var(--surface-3); color: var(--muted); border-color: var(--line); }
.wx-pill.warn { background: color-mix(in oklab, var(--warning), var(--surface) 82%); color: color-mix(in oklab, var(--warning), var(--text) 55%); border-color: color-mix(in oklab, var(--warning), var(--surface) 55%); }
.wx-metric-grid { grid-column: span 3; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.wx-metric {
  border: 1px solid var(--line); background: var(--surface);
  border-radius: 10px; padding: 11px 13px; display: grid; gap: 3px;
}
.wx-metric strong { font-size: 20px; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.wx-metric small { font-size: 10.5px; color: var(--muted); }
.wx-tbl-wrap {
  overflow: auto; max-height: 300px;
  /* 边缘渐隐阴影：右侧还有更多内容时浮现，滚动后左侧浮现（无需滚动条也可感知） */
  background:
    linear-gradient(to right, var(--surface) 30%, transparent),
    linear-gradient(to right, transparent, var(--surface) 70%),
    radial-gradient(farthest-side at 0 50%, color-mix(in oklab, var(--text), transparent 88%), transparent),
    radial-gradient(farthest-side at 100% 50%, color-mix(in oklab, var(--text), transparent 88%), transparent);
  background-repeat: no-repeat;
  background-size: 36px 100%, 36px 100%, 10px 100%, 10px 100%;
  background-position: 0 0, 100% 0, 0 0, 100% 0;
  background-attachment: local, local, scroll, scroll;
}
.wx-tbl { width: 100%; border-collapse: collapse; font-size: 11.5px; }
.wx-th { text-align: left; padding: 5px 8px; border-bottom: 1px solid var(--line-strong); color: var(--muted); font-weight: 700; white-space: nowrap; position: sticky; top: 0; background: var(--surface); }
.wx-td { padding: 5px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.wx-num { text-align: right; font-variant-numeric: tabular-nums; }
.wx-pred-layout { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 14px; align-items: start; }
.wx-field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
.wx-field { display: grid; gap: 3px; }
.wx-field label { font-size: 10.5px; color: var(--muted); font-weight: 600; }
.wx-field input {
  width: 100%; min-height: 30px; padding: 4px 8px;
  border: 1px solid var(--line); border-radius: 7px;
  background: var(--surface-2); font-size: 12.5px; color: var(--text);
  font-variant-numeric: tabular-nums;
}
.wx-field input:focus { outline: 2px solid color-mix(in oklab, var(--accent), transparent 65%); border-color: var(--accent); }
.wx-btn {
  min-height: 30px; padding: 4px 14px; border: 1px solid var(--accent);
  border-radius: 999px; background: var(--accent);
  color: var(--accent-contrast); font-weight: 700; font-size: 12.5px; cursor: pointer;
}
.wx-btn:hover { background: var(--accent-strong); }
.wx-btn-ghost {
  min-height: 26px; padding: 2px 11px; border: 1px solid var(--line);
  border-radius: 999px; background: var(--surface);
  color: var(--muted); font-weight: 700; font-size: 11.5px; cursor: pointer;
}
.wx-btn-ghost:hover { color: var(--text); border-color: var(--line-strong); }
.wx-rr { display: flex; align-items: baseline; gap: 8px; padding: 5px 0; border-bottom: 1px solid var(--line); }
.wx-rr:last-child { border-bottom: none; }
.wx-rr span { color: var(--muted); font-size: 12px; }
.wx-rr strong { font-size: 16.5px; font-variant-numeric: tabular-nums; }
.wx-rr .wx-pill { margin-left: auto; }
.wx-rec-ctrl { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.wx-rec-ctrl label { font-size: 11.5px; color: var(--muted); display: flex; align-items: center; gap: 5px; }
.wx-rec-ctrl input { width: 66px; min-height: 27px; padding: 2px 6px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); font-size: 11.5px; font-variant-numeric: tabular-nums; }
.wx-note { font-size: 11px; color: var(--muted); margin: 2px 0 0; }

/* 模拟台页面切换：惯性入场（指数减速 + 逐项错位，类 Apple 的落座感） */
@keyframes wx-enter {
  from { opacity: 0; transform: translateY(18px) scale(0.99); filter: blur(4px); }
  to   { opacity: 1; transform: none; filter: blur(0); }
}
.wx-content > *, .wx-page-grid > *, .wx-pred-layout > *, .wx-chat > * {
  animation: wx-enter .55s var(--ease-expo) both;
}
.wx-page-grid > *:nth-child(2) { animation-delay: .05s; }
.wx-page-grid > *:nth-child(3) { animation-delay: .1s; }
.wx-page-grid > *:nth-child(4) { animation-delay: .15s; }
.wx-page-grid > *:nth-child(5) { animation-delay: .2s; }
.wx-page-grid > *:nth-child(6) { animation-delay: .25s; }
.wx-page-grid > *:nth-child(n+7) { animation-delay: .3s; }
.wx-content { scroll-behavior: smooth; }

/* 模拟台 AI 对话页 */
.wx-chat { display: grid; gap: 12px; }
.wx-empty { display: grid; gap: 9px; justify-items: center; text-align: center; padding: 16px 8px 4px; }
.wx-empty-mark {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 12px; background: var(--accent-soft);
  border: 1px solid color-mix(in oklab, var(--accent), var(--line) 68%);
  color: var(--accent-strong);
}
.wx-empty-mark svg { width: 18px; height: 18px; }
.wx-empty h3 { margin: 0; font-size: 16.5px; letter-spacing: -0.01em; }
.wx-empty p { margin: 0; font-size: 12px; color: var(--muted); max-width: 52ch; line-height: 1.7; }
.wx-starters { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; width: 100%; max-width: 540px; margin: 6px 0 4px; }
.wx-starter {
  display: flex; gap: 9px; align-items: flex-start; text-align: left;
  padding: 9px 11px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--surface); cursor: pointer;
}
.wx-starter:hover { border-color: color-mix(in oklab, var(--accent), var(--line) 55%); background: var(--accent-soft); }
.wx-starter svg { width: 14px; height: 14px; flex: none; margin-top: 2px; color: var(--accent-strong); }
.wx-starter strong { display: block; font-size: 12px; }
.wx-starter small { display: block; font-size: 10.5px; color: var(--muted); margin-top: 2px; }
.wx-quickbar { display: flex; gap: 6px; flex-wrap: wrap; }
.wx-quickbar span {
  display: inline-flex; align-items: center; min-height: 24px; padding: 0 9px;
  border: 1px solid var(--line); border-radius: 999px;
  background: var(--surface); font-size: 10.5px; color: var(--muted);
}
@media (max-width: 900px) { .wx-starters { grid-template-columns: 1fr; } }
.wx-msg-user {
  justify-self: end; max-width: 78%;
  padding: 9px 13px; border-radius: 13px 13px 4px 13px;
  background: var(--accent); color: var(--accent-contrast);
  font-size: 12.5px; line-height: 1.6;
}
.wx-msg-ai {
  justify-self: start; max-width: 92%;
  border: 1px solid var(--line); border-radius: 4px 13px 13px 13px;
  background: var(--surface); overflow: hidden;
  font-size: 12.5px;
}
.wx-exec { border-bottom: 1px solid var(--line); }
.wx-exec-head {
  display: flex; align-items: center; gap: 8px; width: 100%;
  padding: 8px 12px; border: none; background: transparent; cursor: pointer;
  font-size: 11.5px; color: var(--muted); font-weight: 600; text-align: left;
}
.wx-exec-head:hover { background: var(--surface-2); }
.wx-exec-head svg { width: 12px; height: 12px; transition: transform .25s var(--ease-out); }
.wx-exec.open .wx-exec-head svg { transform: rotate(90deg); }
.wx-exec-status { color: var(--accent); font-weight: 700; }
.wx-exec-steps { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s var(--ease-out); }
.wx-exec.open .wx-exec-steps { grid-template-rows: 1fr; }
.wx-exec-steps-inner { overflow: hidden; }
.wx-step-row { display: flex; align-items: center; gap: 8px; padding: 4px 12px 8px; font-size: 11.5px; color: var(--muted); }
.wx-step-ico { width: 14px; height: 14px; display: grid; place-items: center; color: var(--accent-strong); flex: none; }
.wx-step-ico svg { width: 12px; height: 12px; }
.wx-think {
  margin: 10px 12px 0; border: 1px solid color-mix(in oklab, var(--thinking), transparent 72%);
  border-radius: 9px; background: color-mix(in oklab, var(--thinking), transparent 95%);
}
.wx-think-head {
  display: flex; align-items: center; gap: 7px; width: 100%;
  padding: 6px 10px; border: none; background: transparent; cursor: pointer;
  font-size: 11px; font-weight: 700; color: var(--thinking); text-align: left;
}
.wx-think-body { display: none; padding: 0 10px 8px; font-size: 11.5px; color: color-mix(in oklab, var(--thinking), var(--text) 40%); line-height: 1.6; }
.wx-think.open .wx-think-body { display: block; }
.wx-ai-body { padding: 10px 12px; line-height: 1.7; color: var(--text); }
.wx-ai-body p { margin: 0 0 8px; }
.wx-ai-body p:last-child { margin-bottom: 0; }
.wx-artifact {
  display: flex; align-items: center; gap: 9px; margin: 0 12px 12px;
  padding: 8px 11px; border: 1px solid var(--line); border-radius: 9px;
  background: var(--surface-2); font-size: 11.5px;
}
.wx-artifact svg { width: 14px; height: 14px; color: var(--accent-strong); flex: none; }
.wx-artifact strong { font-size: 12px; }
.wx-artifact span { color: var(--muted); }
.wx-chat-input { display: flex; gap: 8px; }
.wx-chat-input input {
  flex: 1; min-height: 34px; padding: 4px 12px;
  border: 1px solid var(--line); border-radius: 9px;
  background: var(--surface); font-size: 12.5px; color: var(--text);
}
.wx-chat-input input:focus { outline: 2px solid color-mix(in oklab, var(--accent), transparent 65%); border-color: var(--accent); }
.wx-send {
  width: 34px; height: 34px; min-height: 34px; padding: 0; flex: none;
  display: grid; place-items: center; border-radius: 50%;
}
.wx-send svg { width: 15px; height: 15px; }
.wx-send:disabled { opacity: .55; cursor: default; }
.wx-caret { display: inline-block; width: 7px; height: 14px; background: var(--accent); vertical-align: -2px; animation: caret-blink 1s steps(1) infinite; border-radius: 1px; }
@keyframes caret-blink { 50% { opacity: 0; } }

/* 导览提示条 */
.sim-tour-caption {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 16px; border-top: 1px solid var(--line);
  background: var(--surface); font-size: 13px; color: var(--muted);
}
.sim-tour-caption strong { color: var(--accent-strong); font-weight: 700; margin-right: 4px; }
.sim-tour-caption.cap-swap [data-tour-text] { animation: cap-in .55s var(--ease-expo); }
@keyframes cap-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.sim-tour-progress { display: flex; gap: 4px; margin-left: auto; }
.sim-tour-progress i { position: relative; overflow: hidden; width: 12px; height: 3px; border-radius: 2px; background: var(--line-strong); }
.sim-tour-progress i::before {
  content: ""; position: absolute; inset: 0; border-radius: 2px; background: var(--accent);
  transform: scaleX(var(--fill, 0)); transform-origin: left;
  transition: transform var(--dur, .3s) linear;
}

/* ── Bento 特性网格（鼠标聚光灯） ── */
.bento { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; }
.bento-card {
  position: relative; overflow: hidden;
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: var(--surface); box-shadow: var(--shadow-xs);
  padding: 28px; display: grid; gap: 10px; align-content: start;
  transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out), border-color .4s var(--ease-out);
}
.bento-card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 50%), color-mix(in oklab, var(--accent), transparent 90%), transparent 65%);
  opacity: 0; transition: opacity .45s var(--ease-out);
}
.bento-card:hover::before { opacity: 1; }
.bento-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: color-mix(in oklab, var(--accent), var(--line) 55%); }
.bento-4 { grid-column: span 4; }
.bento-3 { grid-column: span 3; }
.bento-2 { grid-column: span 2; }
.bento-card h3 { margin: 0; font-family: var(--font-display); font-size: 19.5px; letter-spacing: -0.025em; }
.bento-card p { margin: 0; color: var(--muted); font-size: 14px; max-width: 48ch; line-height: 1.75; }
.bento-tag { font-family: var(--font-display); font-size: 10.5px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: var(--accent-strong); }
.bento-mini {
  margin-top: 8px; display: grid; gap: 7px;
  padding: 14px; border: 1px solid var(--line); border-radius: var(--radius-md);
  background: var(--surface-2); font-size: 12.5px;
}
.bento-mini-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--muted); }
.bento-mini-row strong { color: var(--text); font-variant-numeric: tabular-nums; }
.bento-list { margin: 4px 0 0; padding: 0; list-style: none; display: grid; gap: 9px; }
.bento-list li { display: flex; gap: 9px; align-items: flex-start; color: var(--muted); font-size: 13.5px; }
.bento-list svg { width: 15px; height: 15px; flex: none; margin-top: 4px; color: var(--accent-strong); }

/* ── 研发闭环（桌面端滚动钉住叙事：进度随滚动推进） ── */
@media (min-width: 1021px) and (prefers-reduced-motion: no-preference) {
  .loop-pin { height: 300vh; }
  .loop-sticky { position: sticky; top: 88px; }
  .loop-pin .loop-line { transition: none; }
}
.loop-rail { position: relative; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 14px; }
.loop-rail::before {
  content: ""; position: absolute; top: 21px; left: 6%; right: 6%; height: 2px;
  background: var(--line); border-radius: 2px; z-index: 0;
}
.loop-line {
  position: absolute; top: 21px; left: 6%; height: 2px; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  border-radius: 2px; z-index: 1; transition: width 1.8s var(--ease-expo);
}
.loop-step { position: relative; z-index: 2; display: grid; gap: 9px; align-content: start; justify-items: start; }
.loop-dot {
  width: 42px; height: 42px; display: grid; place-items: center;
  border-radius: 50%; border: 1px solid var(--line-strong);
  background: var(--surface); color: var(--muted);
  font-family: var(--font-display); font-size: 12px; font-weight: 700; letter-spacing: .04em;
  transition: all .55s var(--ease-out);
}
.loop-step.lit .loop-dot {
  border-color: var(--accent); background: linear-gradient(150deg, var(--accent), var(--accent-strong)); color: var(--accent-contrast);
  box-shadow: 0 8px 20px color-mix(in oklab, var(--accent), transparent 62%);
}
.loop-step h3 { margin: 0; font-size: 15.5px; letter-spacing: -0.01em; transition: color .5s; }
.loop-step.lit h3 { color: var(--accent-ink); }
.loop-step p { margin: 0; color: var(--muted); font-size: 13px; }

/* ── 深色指标带（drenched 对比节奏） ── */
.metrics-band {
  position: relative; overflow: hidden;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px;
  padding: clamp(36px, 4.5vw, 56px) clamp(28px, 4vw, 52px);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(60% 90% at 85% 10%, oklch(45% 0.08 165 / 0.5), transparent 65%),
    linear-gradient(155deg, var(--ink), var(--ink-2) 60%, oklch(34% 0.06 163));
  box-shadow: var(--shadow-md);
}
.metrics-band::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(38% 55% at 18% 85%, color-mix(in oklab, var(--accent), transparent 88%), transparent 62%),
    radial-gradient(30% 45% at 82% 12%, color-mix(in oklab, var(--accent), transparent 90%), transparent 60%);
  mix-blend-mode: screen; opacity: .55;
  animation: band-breathe 16s ease-in-out infinite alternate;
}
@keyframes band-breathe {
  from { opacity: .35; transform: translate3d(-1.2%, 0, 0) scale(1); }
  to   { opacity: .75; transform: translate3d(1.2%, 0, 0) scale(1.04); }
}
.metric-cell { position: relative; z-index: 1; display: grid; gap: 6px; }
.metric-cell strong {
  font-family: var(--font-display);
  font-size: clamp(34px, 3.8vw, 52px); font-weight: 800; letter-spacing: -0.045em;
  font-variant-numeric: tabular-nums; line-height: 1.05;
  color: oklch(96% 0.02 150);
}
.metric-cell strong em { font-style: normal; font-size: 0.5em; font-weight: 700; color: oklch(75% 0.05 158); margin-left: 3px; letter-spacing: 0; }
.metric-cell span { color: oklch(82% 0.025 155); font-size: 13px; line-height: 1.6; }

/* ── 核心优势 ── */
.adv-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.adv-card {
  position: relative; overflow: hidden;
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: var(--surface); padding: 30px;
  display: grid; gap: 12px; align-content: start;
  box-shadow: var(--shadow-xs);
  transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out), border-color .4s var(--ease-out);
}
.adv-card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 0%), color-mix(in oklab, var(--accent), transparent 91%), transparent 65%);
  opacity: 0; transition: opacity .45s var(--ease-out);
}
.adv-card:hover::before { opacity: 1; }
.adv-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); border-color: color-mix(in oklab, var(--accent), var(--line) 55%); }
.adv-num {
  font-family: var(--font-display); font-size: 12px; font-weight: 700; letter-spacing: .16em;
  color: var(--faint);
}
.adv-card h3 { margin: 0; font-family: var(--font-display); font-size: 21px; letter-spacing: -0.03em; line-height: 1.25; }
.adv-card p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.8; max-width: 52ch; }

/* ── 路线图 ── */
.roadmap-rail { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.roadmap-card {
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: var(--surface); padding: 28px; display: grid; gap: 10px; align-content: start;
  box-shadow: var(--shadow-xs);
  transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out);
}
.roadmap-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); }
.roadmap-card.now { border-color: color-mix(in oklab, var(--accent), var(--line) 50%); background: color-mix(in oklab, var(--surface), var(--accent-soft) 20%); }
.roadmap-card h3 { margin: 0; font-family: var(--font-display); font-size: 19px; letter-spacing: -0.025em; }
.roadmap-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }
.roadmap-phase { font-family: var(--font-display); font-size: 11px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; color: var(--accent-strong); }
.roadmap-card:not(.now) .roadmap-phase { color: var(--faint); }

/* ── 路线图时间轴（仅 #roadmap，桌面横向 / 移动纵向） ── */
.roadmap-timeline { position: relative; padding-top: 30px; }
.roadmap-timeline .rm-line {
        position: absolute; top: 5px; left: 25px; right: 25px; height: 2px; z-index: 0;
        background: linear-gradient(90deg, var(--line) 0%, var(--accent) 35%, var(--accent) 62%, var(--line) 100%);
        border-radius: 2px; opacity: .9;
      }
.roadmap-timeline .roadmap-card { position: relative; }
.roadmap-timeline .rm-dot {
  position: absolute; top: -30px; left: 20px; width: 12px; height: 12px;
  border-radius: 50%; background: var(--surface);
  border: 2px solid var(--line-strong); z-index: 1;
  transition: border-color .5s var(--ease-out), background .5s var(--ease-out), box-shadow .5s var(--ease-out);
}
.roadmap-timeline .roadmap-card.now .rm-dot {
  border-color: var(--accent); background: var(--accent);
  box-shadow: 0 0 0 5px var(--accent-soft), 0 4px 14px color-mix(in oklab, var(--accent), transparent 60%);
}
@media (max-width: 760px) {
  .roadmap-timeline { padding-top: 0; padding-left: 26px; }
  .roadmap-timeline .rm-line { top: 8px; bottom: 8px; left: 11px; right: auto; width: 2px; height: auto; background: linear-gradient(180deg, var(--line) 0%, var(--accent) 35%, var(--accent) 62%, var(--line) 100%); }
  .roadmap-timeline .rm-dot { top: 22px; left: -20px; }
}

/* ── 顶部滚动进度条（JS 注入，全站） ── */
.scroll-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 60;
  transform: scaleX(0); transform-origin: left;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  box-shadow: 0 1px 8px color-mix(in oklab, var(--accent), transparent 60%);
  pointer-events: none;
}

/* ── 全局键盘焦点环 ── */
a:focus-visible, button:focus-visible, input:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 8px;
}

/* ── 下载 CTA ── */
.cta-panel {
  position: relative; overflow: hidden;
  border-radius: var(--radius-xl);
  background: linear-gradient(150deg, var(--ink), var(--ink-2) 50%, oklch(42% 0.08 163));
  color: oklch(96% 0.02 150);
  padding: clamp(44px, 6vw, 76px);
  display: grid; gap: 20px; justify-items: start;
  box-shadow: var(--shadow-lg);
}
.cta-panel > *:not(img) { position: relative; z-index: 1; }
.cta-panel .eyebrow { color: oklch(84% 0.06 160); }
.cta-panel .eyebrow::before { background: oklch(72% 0.08 160); }
.cta-panel h2 { margin: 0; font-family: var(--font-display); font-size: clamp(28px, 3.6vw, 46px); letter-spacing: -0.04em; line-height: 1.12; max-width: 22ch; }
.cta-panel p { margin: 0; color: oklch(86% 0.03 155); max-width: 60ch; font-size: 16px; line-height: 1.8; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.btn-light { background: oklch(98% 0.006 160); border-color: oklch(98% 0.006 160); color: var(--accent-ink); }
.btn-light:hover { background: oklch(93% 0.02 160); border-color: oklch(93% 0.02 160); }
.btn-outline { background: transparent; border-color: oklch(75% 0.05 160 / 0.45); color: oklch(93% 0.02 160); }
.btn-outline:hover { border-color: oklch(85% 0.04 160); background: oklch(60% 0.06 160 / 0.25); }

/* ── 页脚 ── */
.footer { margin-top: clamp(56px, 7vh, 88px); border-top: 1px solid var(--line); background: var(--surface); }
.footer-inner {
  max-width: 1200px; margin: 0 auto; padding: 44px 24px 32px;
  display: grid; grid-template-columns: 1.4fr repeat(3, minmax(0, 1fr)); gap: 28px;
}
.footer-brand p { margin: 12px 0 0; color: var(--muted); font-size: 13px; max-width: 36ch; line-height: 1.75; }
.footer-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.footer-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 12px; border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--line-strong), transparent 25%);
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  color: var(--text); font-size: 11.5px; font-weight: 600;
  box-shadow: var(--shadow-xs);
  transition: transform .35s var(--ease-out), border-color .35s var(--ease-out), background .35s var(--ease-out);
}
.footer-badge:hover {
  transform: translateY(-2px);
  border-color: color-mix(in oklab, var(--accent), transparent 50%);
  background: linear-gradient(180deg, var(--surface), var(--accent-soft));
}
.footer-badge svg { width: 14px; height: 14px; color: var(--accent-strong); flex: none; }
.footer-col h4 { margin: 0 0 12px; font-family: var(--font-display); font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: var(--faint); }
.footer-col a { display: block; padding: 4px 0; color: var(--muted); font-size: 13.5px; }
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  max-width: 1200px; margin: 0 auto; padding: 16px 24px 22px;
  border-top: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  color: var(--faint); font-size: 12.5px;
}
.footer-bottom a { color: var(--muted); font-weight: 600; }
.footer-bottom a:hover { color: var(--accent-strong); }

/* ── 下载页 ── */
.dl-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 20px; align-items: start; }
.dl-card {
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  background: var(--surface); box-shadow: var(--shadow-xs);
  padding: 28px; display: grid; gap: 14px; align-content: start;
}
.dl-card h3 { margin: 0; font-family: var(--font-display); font-size: 18px; letter-spacing: -0.02em; }
.dl-version { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.dl-version strong { font-family: var(--font-display); font-size: 23px; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.dl-status { margin: 0; font-size: 12.5px; color: var(--faint); display: flex; align-items: center; gap: 7px; }
.dl-status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--faint); flex: none; }
.dl-status.ok { color: var(--accent-strong); }
.dl-status.ok::before { background: var(--accent); }
.dl-file {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--radius-md);
  background: var(--surface-2); font-size: 13px;
}
.dl-file svg { width: 18px; height: 18px; color: var(--accent-strong); flex: none; }
.dl-file-name { font-weight: 700; font-size: 13.5px; word-break: break-all; }
.dl-file-meta { color: var(--muted); font-size: 12px; }
.dl-sha {
  padding: 12px 14px; border: 1px dashed var(--line-strong); border-radius: var(--radius-md);
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 11.5px; color: var(--muted); word-break: break-all; line-height: 1.7;
}
.dl-req { margin: 0; padding: 0; list-style: none; display: grid; gap: 9px; }
.dl-req li { display: flex; gap: 9px; color: var(--muted); font-size: 13.5px; align-items: flex-start; }
.dl-req svg { width: 15px; height: 15px; flex: none; margin-top: 3px; color: var(--accent-strong); }
.dl-steps { margin: 0; padding-left: 20px; display: grid; gap: 9px; color: var(--muted); font-size: 14px; line-height: 1.7; }
.dl-note {
  padding: 14px 16px; border-radius: var(--radius-md);
  border: 1px solid color-mix(in oklab, var(--accent), var(--line) 60%);
  background: var(--accent-soft); color: var(--accent-ink); font-size: 13.5px; line-height: 1.7;
}
.dl-note a { color: var(--accent-strong); font-weight: 700; }
.dl-note a:hover { color: var(--accent); }
[data-theme="dark"] .dl-note {
  background: color-mix(in oklab, var(--accent), var(--surface) 88%);
  border-color: color-mix(in oklab, var(--accent), var(--line) 55%);
  color: var(--text);
}
[data-theme="dark"] .dl-note a { color: var(--accent-strong); }

/* ── 法律页面 ── */
.legal { max-width: 780px; margin: 0 auto; padding: 80px 24px 40px; }
.legal h1 { margin: 16px 0 8px; font-family: var(--font-display); font-size: clamp(32px, 4vw, 46px); letter-spacing: -0.04em; }
.legal-meta { color: var(--faint); font-size: 13px; margin-bottom: 36px; }
.legal h2 { margin: 40px 0 12px; font-family: var(--font-display); font-size: 21px; letter-spacing: -0.02em; }
.legal p, .legal li { color: var(--muted); font-size: 15px; line-height: 1.9; }
.legal ul { padding-left: 22px; display: grid; gap: 6px; }
.legal strong { color: var(--text); }

/* ── 子页头 ── */
.page-hero { padding: 80px 0 44px; }
.page-hero h1 { margin: 16px 0 14px; font-family: var(--font-display); font-size: clamp(34px, 4.6vw, 56px); letter-spacing: -0.045em; line-height: 1.06; }
.page-hero p { margin: 0; color: var(--muted); font-size: 16.5px; max-width: 62ch; line-height: 1.8; }

/* ── 体验页提示条 ── */
.demo-banner {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin: 26px 0 18px; padding: 13px 18px;
  border: 1px dashed color-mix(in oklab, var(--warning), var(--line) 35%);
  border-radius: var(--radius-md);
  background: color-mix(in oklab, var(--warning), var(--surface) 90%);
  color: color-mix(in oklab, var(--warning), var(--text) 60%);
  font-size: 13.5px; font-weight: 600;
}
.demo-banner svg { width: 16px; height: 16px; flex: none; }
.demo-banner a { margin-left: auto; color: var(--accent-strong); font-weight: 700; }

/* ── 右下角返回顶部（滚动超过两屏淡入，大厂式浅圆钮） ── */
.back-to-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 40;
  width: 42px; height: 42px; border-radius: 50%;
  display: grid; place-items: center;
  border: 1px solid var(--line-strong);
  background: color-mix(in oklab, var(--surface), transparent 8%);
  color: var(--muted);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(14px) saturate(1.5);
  -webkit-backdrop-filter: blur(14px) saturate(1.5);
  cursor: pointer;
  opacity: 0; transform: translateY(12px) scale(.92); pointer-events: none;
  transition: opacity .4s var(--ease-out), transform .4s var(--ease-out), background-color .3s, color .3s, border-color .3s, box-shadow .3s;
}
.back-to-top.is-visible { opacity: 1; transform: none; pointer-events: auto; }
.back-to-top svg { width: 18px; height: 18px; }
.back-to-top:hover {
  color: var(--accent-strong);
  border-color: color-mix(in oklab, var(--accent), transparent 55%);
  background: color-mix(in oklab, var(--accent-soft), transparent 12%);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.back-to-top::after {
  content: "返回顶部"; position: absolute; right: calc(100% + 10px); top: 50%; transform: translateY(-50%) translateX(6px);
  padding: 5px 10px; border-radius: 8px;
  background: var(--ink); color: oklch(97% 0.01 160);
  font-size: 12px; font-weight: 600; white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity .25s ease, transform .25s var(--ease-out);
}
.back-to-top:hover::after { opacity: 1; transform: translateY(-50%) translateX(0); }
@media (max-width: 760px) {
  .back-to-top { right: 16px; bottom: 16px; width: 38px; height: 38px; }
  .back-to-top::after { display: none; }
}

/* ── 滚动 reveal（位移 + 去模糊） ── */
.reveal { opacity: 0; transform: translateY(30px); filter: blur(7px); transition: opacity .9s var(--ease-out), transform .9s var(--ease-out), filter .9s var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: none; filter: blur(0); }
.reveal-d1 { transition-delay: .1s; }
.reveal-d2 { transition-delay: .2s; }
.reveal-d3 { transition-delay: .3s; }
.reveal-d4 { transition-delay: .4s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-bg { animation: none; }
  .reveal, .sim-frame, .hero-fade { opacity: 1; transform: none; filter: none; transition: none; }
  .hero-line > span { transform: none; transition: none; }
  .hero-line:last-child > span::after { transform: scaleX(1); transition: none; }
  .hero-scroll { display: none; }
  .back-to-top { transition: opacity .01ms; }
  .loop-line { transition: none; }
  .btn-primary::after { display: none; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* ── 响应式 ── */
@media (max-width: 1020px) {
  .bento-4, .bento-3, .bento-2 { grid-column: span 3; }
  .loop-rail { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
  .loop-rail::before, .loop-line { display: none; }
  .metrics-band { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .adv-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .dl-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav-cta { min-height: 34px; padding: 0 13px; font-size: 12.5px; flex: none; }
  .brand-name span { display: none; }
  .sim-url { min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
  .hero { padding-top: 60px; }
  .hero h1 { font-size: clamp(26px, 7.2vw, 34px); }
  .hero-line > span { white-space: normal; }
  .section { padding-top: 72px; }
  .bento > * { grid-column: span 6 !important; }
  .roadmap-rail { grid-template-columns: 1fr; }
  .wx-shell { grid-template-columns: 1fr; grid-template-rows: auto minmax(0, 1fr); height: 600px; }
  .wx-sidebar { flex-direction: row; align-items: center; gap: 6px; padding: 8px 10px; overflow-x: auto; border-right: none; border-bottom: 1px solid var(--line); }
  .wx-nav { display: flex; gap: 4px; }
  .wx-nav-item { white-space: nowrap; min-height: 30px; font-size: 11.5px; }
  .wx-brand, .wx-demo-badge { display: none; }
  .wx-metric-grid { grid-column: span 1; grid-template-columns: repeat(2, 1fr); }
  .wx-page-grid { grid-template-columns: 1fr; }
  .wx-span-2, .wx-span-3 { grid-column: span 1; }
  .wx-pred-layout { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { justify-content: center; text-align: center; }
  .metrics-band { grid-template-columns: 1fr 1fr; gap: 18px; padding: 28px 22px; }
}