/* ==========================================================================
   Oko 官网样式系统 v1.0
   纯静态 / 无第三方依赖 / 支持 prefers-reduced-motion
   目录：
   01 设计令牌  02 基础重置  03 排版与工具类  04 按钮  05 站点头部与导航
   06 首页 Hero  07 手机演示  08 能力网格  09 工作原理  10 三视图
   11 上手步骤  12 平台下载  13 权限与隐私  14 FAQ  15 CTA 与页脚
   16 内页  17 正文（法务/更新日志）  18 响应式  19 动效与可访问性
   ========================================================================== */

/* ---------- 01 设计令牌 ---------- */
:root {
  --ink: #0c1826;
  --ink-2: #122234;
  --ink-3: #1b2e46;
  --line-dark: rgba(255, 255, 255, .1);
  --paper: #f4efe4;
  --paper-2: #fdfaf3;
  --card: #ffffff;
  --text: #16202c;
  --text-2: #3d4351;
  --muted: #6a7080;
  --muted-2: #8b9098;
  --accent: #e0a05a;
  --accent-deep: #96601f;
  --accent-soft: #f7e7cd;
  --gold: #efcf9d;
  --teal: #2f9e8d;
  --teal-soft: #ddf1eb;
  --violet: #6a63c9;
  --line: #e4dccc;
  --radius-s: 10px;
  --radius: 16px;
  --radius-l: 24px;
  --radius-xl: 32px;
  --shadow-s: 0 1px 2px rgba(12, 24, 38, .05), 0 4px 14px rgba(12, 24, 38, .05);
  --shadow: 0 2px 6px rgba(12, 24, 38, .05), 0 18px 40px -18px rgba(12, 24, 38, .22);
  --shadow-l: 0 40px 90px -30px rgba(12, 24, 38, .45);
  --font: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system,
    "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --mono: "Cascadia Code", "JetBrains Mono", "SF Mono", Consolas, "Liberation Mono", monospace;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --head-h: 68px;
  --wrap: 1180px;
}

/* ---------- 02 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--head-h) + 16px); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
h1, h2, h3, h4, p, ul, ol, dl, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
::selection { background: rgba(224, 160, 90, .26); }

/* ---------- 03 排版与工具类 ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: 24px; }
.wrap-narrow { max-width: 800px; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: 8px; left: 8px; z-index: 200; padding: 10px 16px;
  background: var(--ink); color: #fff; border-radius: 10px; transform: translateY(-160%);
  transition: transform .2s var(--ease);
}
.skip-link:focus { transform: none; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-deep);
}
.eyebrow::before {
  content: ""; width: 18px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--gold));
}
.eyebrow.on-dark { color: var(--gold); }

h1, .h1 { font-size: clamp(2.6rem, 5.4vw, 4.3rem); line-height: 1.08; letter-spacing: -.022em; font-weight: 700; }
h2, .h2 { font-size: clamp(1.85rem, 3.2vw, 2.75rem); line-height: 1.18; letter-spacing: -.018em; font-weight: 700; }
h3, .h3 { font-size: clamp(1.12rem, 1.5vw, 1.32rem); line-height: 1.4; letter-spacing: -.008em; font-weight: 650; }
.lede { font-size: clamp(1.02rem, 1.35vw, 1.16rem); line-height: 1.75; color: var(--text-2); }
.on-dark .lede, .lede.on-dark { color: rgba(253, 250, 243, .72); }
.mono { font-family: var(--mono); font-size: .86em; letter-spacing: -.01em; }
.section { padding-block: clamp(64px, 8vw, 112px); }
.section-head { max-width: 720px; margin-bottom: clamp(32px, 4vw, 56px); }
.section-head .h2 { margin-top: 14px; }
.section-head .lede { margin-top: 16px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head.center .eyebrow::before { display: none; }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }
.on-dark { color: #fdfaf3; }
.on-dark .h2, .on-dark .h3 { color: #fdfaf3; }

/* ---------- 04 按钮 ---------- */
.btn {
  --btn-bg: var(--ink); --btn-fg: #fff; --btn-bd: transparent;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 13px 22px; min-height: 46px; border: 1px solid var(--btn-bd);
  border-radius: 999px; background: var(--btn-bg); color: var(--btn-fg);
  font-size: 15px; font-weight: 600; letter-spacing: .01em; cursor: pointer;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease), color .18s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn svg { width: 17px; height: 17px; flex: none; }
.btn-primary {
  --btn-bg: linear-gradient(180deg, #f2c184 0%, #e3a860 100%);
  --btn-fg: #1d1407;
  box-shadow: inset 0 0 0 1px rgba(150, 96, 31, .16), inset 0 1px 0 rgba(255, 255, 255, .18), 0 10px 26px -14px rgba(176, 120, 56, .50);
}
.btn-primary:hover { box-shadow: 0 16px 34px -16px rgba(190, 130, 62, .78), inset 0 1px 0 rgba(255, 255, 255, .4); }
.btn-ghost {
  --btn-bg: transparent; --btn-fg: var(--ink); --btn-bd: rgba(12, 24, 38, .18);
}
.btn-ghost:hover { --btn-bg: rgba(12, 24, 38, .05); }
.btn-ghost.on-dark { --btn-fg: #fdfaf3; --btn-bd: rgba(255, 255, 255, .24); }
.btn-ghost.on-dark:hover { --btn-bg: rgba(255, 255, 255, .08); }
.btn-sm { padding: 9px 16px; min-height: 38px; font-size: 14px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.text-link {
  display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 15px;
  color: var(--accent-deep); border-bottom: 1px solid rgba(150, 96, 31, .32); padding-bottom: 2px;
  transition: gap .18s var(--ease), border-color .18s var(--ease);
}
.text-link:hover { gap: 10px; border-color: var(--accent-deep); }
.text-link.on-dark { color: var(--gold); border-color: rgba(239, 207, 157, .42); }

/* ---------- 05 站点头部与导航 ---------- */
.site-head {
  position: fixed; inset: 0 0 auto; z-index: 100; height: var(--head-h);
  display: flex; align-items: center;
  color: #fdfaf3;
  transition: background .25s var(--ease), box-shadow .25s var(--ease), backdrop-filter .25s var(--ease), border-color .25s var(--ease);
  border-bottom: 1px solid transparent;
}
.site-head::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: rgba(12, 24, 38, .72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  opacity: 0; transition: opacity .25s var(--ease);
}
.site-head.is-scrolled::before { opacity: 1; }
.site-head.is-scrolled { border-bottom-color: var(--line-dark); }
.head-inner { display: flex; align-items: center; gap: 28px; width: 100%; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; letter-spacing: -.02em; }
.brand svg, .brand-mark { width: 30px; height: 30px; }
.brand-mark { border-radius: 9px; box-shadow: 0 0 0 1px rgba(255, 255, 255, .16), 0 6px 16px -8px rgba(0, 0, 0, .6); flex: none; }
.brand small { font-size: 11px; font-weight: 600; letter-spacing: .12em; color: rgba(253, 250, 243, .55); padding-left: 8px; border-left: 1px solid var(--line-dark); }
.site-nav { margin-left: auto; }
.site-nav ul { display: flex; align-items: center; gap: 4px; }
.site-nav a {
  display: block; padding: 9px 14px; border-radius: 999px; font-size: 14.5px; font-weight: 500;
  color: rgba(253, 250, 243, .78); transition: color .18s var(--ease), background .18s var(--ease);
}
.site-nav a:hover { color: #fff; background: rgba(255, 255, 255, .08); }
.site-nav a[aria-current="page"] { color: #fff; background: rgba(255, 255, 255, .1); }
.head-actions { display: flex; align-items: center; gap: 10px; }
.head-actions .btn { min-height: 40px; padding: 9px 18px; font-size: 14px; }
.nav-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--line-dark);
  border-radius: 12px; background: rgba(255, 255, 255, .06); color: #fff;
  align-items: center; justify-content: center; cursor: pointer;
}
.nav-toggle span { display: block; width: 18px; height: 1.6px; background: currentColor; border-radius: 2px; position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 1.6px; background: currentColor; border-radius: 2px;
  transition: transform .2s var(--ease), top .2s var(--ease);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

.drawer {
  position: fixed; inset: var(--head-h) 0 auto; z-index: 99;
  background: rgba(10, 20, 32, .97); backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line-dark);
  padding: 16px 24px 28px; transform: translateY(-12px); opacity: 0; visibility: hidden;
  transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
}
.drawer.is-open { transform: none; opacity: 1; visibility: visible; }
.drawer ul { display: grid; gap: 2px; }
.drawer a { display: block; padding: 13px 6px; font-size: 17px; font-weight: 550; border-bottom: 1px solid rgba(255, 255, 255, .07); }
.drawer .btn { margin-top: 18px; width: 100%; }

/* ---------- 06 首页 Hero ---------- */
.hero {
  position: relative; overflow: hidden; color: #fdfaf3;
  background: var(--ink);
  padding-top: calc(var(--head-h) + clamp(48px, 7vw, 92px));
  padding-bottom: clamp(64px, 8vw, 104px);
  isolation: isolate;
}
.hero::before {
  content: ""; position: absolute; inset: -20% -10% auto; height: 90%; z-index: -2;
  background:
    radial-gradient(42% 48% at 18% 22%, rgba(224, 160, 90, .22), transparent 70%),
    radial-gradient(38% 44% at 82% 12%, rgba(74, 124, 178, .26), transparent 72%),
    radial-gradient(46% 40% at 62% 78%, rgba(47, 158, 141, .16), transparent 72%);
  filter: blur(10px);
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(70% 60% at 50% 30%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(70% 60% at 50% 30%, #000 20%, transparent 78%);
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr); gap: clamp(28px, 4vw, 64px); align-items: center; }
.hero-copy { max-width: 620px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 14px 7px 8px;
  border: 1px solid rgba(255, 255, 255, .16); border-radius: 999px;
  background: rgba(255, 255, 255, .06); font-size: 13px; color: rgba(253, 250, 243, .82);
  backdrop-filter: blur(6px);
}
.hero-badge b { font-weight: 650; color: #fff; }
.pill {
  display: inline-flex; align-items: center; gap: 6px; padding: 3px 9px; border-radius: 999px;
  font-size: 11.5px; font-weight: 650; letter-spacing: .04em;
}
.pill-live { background: rgba(47, 158, 141, .18); color: #93dccd; border: 1px solid rgba(47, 158, 141, .38); }
.pill-dot { width: 6px; height: 6px; border-radius: 50%; background: #58cdb4; box-shadow: 0 0 0 4px rgba(88, 205, 180, .16); }
.hero h1 { margin-top: 22px; }
.hero h1 .grad {
  background: linear-gradient(96deg, #f6e0bd 0%, #f3c993 42%, #d99a4a 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lede { margin-top: 22px; max-width: 34em; font-size: clamp(1.04rem, 1.42vw, 1.2rem); }
.hero-visual .hero-caption { margin-top: 14px; font-size: 12px; color: rgba(253, 250, 243, .45); text-align: center; }
.hero-cta { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.hero-meta { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: 13px; color: rgba(253, 250, 243, .62); }
.hero-meta li { display: flex; align-items: center; gap: 7px; }
.hero-meta svg { width: 15px; height: 15px; color: var(--teal); flex: none; }
.hero-visual { display: flex; flex-direction: column; align-items: center; justify-content: center; position: relative; }
.hero-visual::before {
  content: ""; position: absolute; width: 78%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle, rgba(233, 168, 92, .30), transparent 66%);
  filter: blur(18px); top: 6%;
}
.hero-caption { margin-top: 18px; font-size: 12px; color: rgba(253, 250, 243, .45); text-align: center; }

/* 底部滚动提示条 */
.hero-strip {
  margin-top: clamp(40px, 5vw, 68px); padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, .09);
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px;
}
.hero-strip dl { display: grid; gap: 4px; }
.hero-strip dt { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: rgba(253, 250, 243, .45); }
.hero-strip dd { margin: 0; font-size: 15px; font-weight: 600; color: rgba(253, 250, 243, .92); }
.hero-strip dd span { font-family: var(--mono); font-size: 13px; color: var(--gold); }

/* ---------- 07 手机演示 ---------- */
.phone {
  position: relative; width: min(330px, 82vw); padding: 9px;
  border-radius: 46px; background: linear-gradient(160deg, #26374b, #101d2c 40%, #080f18);
  box-shadow: var(--shadow-l), inset 0 1px 0 rgba(255, 255, 255, .18);
  border: 1px solid rgba(255, 255, 255, .1);
}
.phone::before, .phone::after {
  content: ""; position: absolute; width: 3px; border-radius: 3px; background: #2b3b4e;
}
.phone::before { right: -3px; top: 132px; height: 58px; }
.phone::after { right: -3px; top: 206px; height: 34px; }
.phone-screen {
  position: relative; border-radius: 38px; overflow: hidden;
  background: linear-gradient(180deg, #121f2e 0%, #0b1723 55%, #0d1926 100%);
  border: 1px solid rgba(255, 255, 255, .06);
  height: 620px; display: flex; flex-direction: column;
}
.phone-status {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 22px 4px; font-size: 11.5px; font-weight: 600; color: rgba(255, 255, 255, .82);
  letter-spacing: .04em;
}
.phone-status .dots { display: flex; align-items: center; gap: 4px; }
.phone-status .dots i { display: block; width: 3px; height: 8px; background: rgba(255, 255, 255, .7); border-radius: 2px; }
.phone-status .dots i:nth-child(2) { height: 10px; }
.phone-status .dots i:nth-child(3) { height: 12px; }
.phone-status .dots i:nth-child(4) { width: 14px; height: 7px; border: 1px solid rgba(255, 255, 255, .55); background: none; }
.phone-top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 20px 12px; border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.phone-top .t { font-size: 15px; font-weight: 650; letter-spacing: -.01em; color: #fff; }
.phone-top .s { font-size: 10.5px; color: rgba(255, 255, 255, .45); }
.phone-top .ico { width: 26px; height: 26px; border-radius: 8px; background: rgba(255, 255, 255, .07); display: grid; place-items: center; }
.phone-top .ico svg { width: 14px; height: 14px; color: rgba(255, 255, 255, .72); }
.chat { flex: 1; padding: 16px 16px 8px; display: flex; flex-direction: column; gap: 12px; overflow: hidden; }
.msg { max-width: 84%; font-size: 12.6px; line-height: 1.6; opacity: 0; transform: translateY(8px); animation: msgIn .5s var(--ease) forwards; }
.msg.user {
  align-self: flex-end; padding: 10px 13px; border-radius: 15px 15px 4px 15px;
  background: linear-gradient(135deg, #f2c184, #dca25b); color: #1d1407; font-weight: 550;
  box-shadow: 0 8px 20px -10px rgba(196, 140, 76, .80);
}
.msg.bot {
  align-self: flex-start; padding: 11px 13px; border-radius: 15px 15px 15px 4px;
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .09);
  color: rgba(253, 250, 243, .92);
}
.msg.bot strong { color: #efcf9d; font-weight: 650; }
.msg.bot .mini { display: block; margin-top: 8px; font-size: 11px; color: rgba(255, 255, 255, .5); }
.tool-card {
  align-self: flex-start; width: 88%; padding: 10px 12px; border-radius: 13px;
  background: rgba(47, 158, 141, .08); border: 1px solid rgba(47, 158, 141, .26);
  font-family: var(--mono); font-size: 10.5px; line-height: 1.7; color: #a9e3d6;
  opacity: 0; transform: translateY(8px); animation: msgIn .5s var(--ease) forwards;
}
.tool-card .row { display: flex; align-items: center; gap: 7px; }
.tool-card .row + .row { margin-top: 3px; color: rgba(169, 227, 214, .62); }
.tool-card .ok { color: #58cdb4; }
.perm {
  align-self: stretch; width: 100%; margin-top: 2px; padding: 12px 13px; border-radius: 15px;
  background: #fdfaf3; color: #16202c; box-shadow: 0 18px 40px -18px rgba(0, 0, 0, .8);
  opacity: 0; transform: translateY(8px); animation: msgIn .5s var(--ease) forwards;
}
.perm h4 { font-size: 12.5px; font-weight: 700; }
.perm p { font-size: 11px; line-height: 1.55; color: #5c6170; margin-top: 3px; }
.perm .row { display: flex; gap: 8px; margin-top: 10px; }
.perm .row button {
  flex: 1; padding: 7px 0; border-radius: 9px; border: 1px solid #e4dccc; background: #fff;
  font-size: 11.5px; font-weight: 650; cursor: default;
}
.perm .row button.primary { background: #e0a05a; border-color: #e0a05a; color: #1d1407; }
.phone-input {
  margin: 6px 14px 16px; padding: 9px 9px 9px 14px; border-radius: 999px;
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .12);
  display: flex; align-items: center; gap: 10px; color: rgba(255, 255, 255, .45); font-size: 12px;
}
.phone-input .caret { width: 1.5px; height: 14px; background: var(--gold); animation: caret 1.1s steps(2) infinite; }
.phone-input .send { margin-left: auto; width: 28px; height: 28px; border-radius: 50%; background: linear-gradient(135deg, #eeb06a, #c9863f); display: grid; place-items: center; flex: none; }
.phone-input .send svg { width: 13px; height: 13px; color: #1d1407; }
.phone-glow {
  position: absolute; inset: auto -18% -14% -18%; height: 42%; z-index: -1;
  background: radial-gradient(50% 60% at 50% 0, rgba(233, 168, 92, .30), transparent 70%);
  filter: blur(14px);
}
@keyframes msgIn { to { opacity: 1; transform: none; } }
@keyframes caret { 50% { opacity: 0; } }

/* ---------- 08 能力网格 ---------- */
.bento { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 16px; }
.card {
  position: relative; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius-l); padding: clamp(20px, 2.4vw, 30px);
  box-shadow: var(--shadow-s); overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #dad2c2; }
.card .icon {
  width: 42px; height: 42px; border-radius: 13px; display: grid; place-items: center;
  background: linear-gradient(160deg, #fdf4e6, #f8e9d2); border: 1px solid #efd8b6;
  color: var(--accent-deep); margin-bottom: 16px;
}
.card .icon svg { width: 21px; height: 21px; }
.card .icon.teal { background: linear-gradient(160deg, #e9f6f1, #d6efe7); border-color: #bfe0d7; color: #1f7a69; }
.card .icon.violet { background: linear-gradient(160deg, #eeeaf6, #e3e0f3); border-color: #d4d0ec; color: #4f48a6; }
.card .icon.gold { background: linear-gradient(160deg, #fbf4e4, #f7e6c4); border-color: #f0d9ae; color: #8a6416; }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14.6px; line-height: 1.7; }
.card .tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.tag {
  font-size: 11.5px; font-weight: 600; padding: 4px 9px; border-radius: 7px;
  background: #f2ebdd; color: #6b6152; border: 1px solid #e8e0d2;
}
.tag.teal { background: #e7f4ef; border-color: #c7e3d9; color: #1f7a69; }
.tag.violet { background: #eceaf7; border-color: #d9d5ed; color: #4f48a6; }
.b5 { grid-column: span 5; }
.b7 { grid-column: span 7; }
.b4 { grid-column: span 4; }
.b6 { grid-column: span 6; }
.b8 { grid-column: span 8; }
.b3 { grid-column: span 3; }

/* 卡内演示：时间轴 */
.timeline {
  margin-top: 20px; display: grid; gap: 7px; padding: 14px; border-radius: 14px;
  background: #faf7f0; border: 1px dashed #e6ddcb;
}
.timeline .slot { display: flex; align-items: center; gap: 10px; font-size: 11.5px; color: var(--muted); }
.timeline .slot .bar {
  height: 22px; border-radius: 6px; background: linear-gradient(90deg, #f4e4c9, #e9d0a8);
  border: 1px solid #e3c298; flex: none;
}
.timeline .slot .bar.teal { background: linear-gradient(90deg, #d3eee6, #bce1d8); border-color: #96d3c5; }
.timeline .slot .bar.violet { background: linear-gradient(90deg, #e3e0f3, #d2cdec); border-color: #beb7e2; }
.timeline .slot .lbl { font-weight: 600; color: #4a4f5c; }
.timeline .slot .lbl small { display: block; font-weight: 500; font-size: 10.5px; color: var(--muted-2); }

/* 卡内演示：偏好记忆 */
.memory { margin-top: 18px; display: grid; gap: 8px; }
.memory .row {
  display: flex; align-items: flex-start; gap: 10px; padding: 9px 11px; border-radius: 11px;
  background: #f6f7fb; border: 1px solid #e6e6f1; font-size: 12px; color: #4b5163;
}
.memory .row b { color: #2b3140; font-weight: 650; }
.memory .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--violet); margin-top: 6px; flex: none; }

/* 卡内演示：冲突检测 */
.conflict {
  margin-top: 18px; padding: 4px 14px; border-radius: 14px;
  background: #faf7f0; border: 1px dashed #e6ddcb;
}
.conflict .crow {
  display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; align-items: center; gap: 10px;
  padding: 9px 0; border-top: 1px dashed #eae1d0;
}
.conflict .crow:first-child { border-top: 0; }
.conflict .ctime { font-family: var(--mono); font-size: 11px; color: #8a8070; }
.conflict .ctitle { display: flex; align-items: center; gap: 7px; font-size: 12px; color: #40464f; }
.conflict .ctitle i { width: 7px; height: 7px; border-radius: 2px; background: #e3c298; flex: none; }
.conflict .crow.ok .ctitle i { background: #74c8b8; }
.conflict .ctag { font-size: 10px; font-weight: 650; padding: 2px 7px; border-radius: 999px; white-space: nowrap; }
.conflict .ctag.bad { background: #f6ded1; color: #8f4a24; }
.conflict .ctag.good { background: #ddf1eb; color: #1b6b5c; }
.conflict .note { font-size: 10.5px; color: var(--muted-2); line-height: 1.6; padding-bottom: 10px; }

/* ---------- 09 工作原理 ---------- */
.how {
  background: var(--paper-2);
  color: var(--text);
  position: relative;
  overflow: hidden;
  border-block: 1px solid var(--line);
}
.how::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(44% 52% at 94% 2%, rgba(224, 160, 90, .10), transparent 70%),
              radial-gradient(38% 44% at 0% 98%, rgba(47, 158, 141, .07), transparent 70%);
  pointer-events: none;
}
.how .wrap { position: relative; }
.how-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.steps { display: grid; gap: 2px; }
.step { display: grid; grid-template-columns: 44px 1fr; gap: 18px; padding: 22px 0; border-top: 1px solid var(--line); }
.step:first-child { border-top: 0; padding-top: 4px; }
.step-num {
  width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center;
  font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--accent-deep);
  border: 1px solid #f0d8b4; background: #fdf3e3;
}
.step h3 { font-size: 18px; margin-bottom: 6px; color: var(--text); }
.step p { color: var(--muted); font-size: 14.6px; line-height: 1.7; }
.step .mono { color: #1b6b5c; }

.flow-card {
  border-radius: var(--radius-l); border: 1px solid var(--line);
  background: var(--card); padding: 22px; box-shadow: var(--shadow);
}
.flow-card .fc-head {
  display: flex; align-items: center; gap: 8px; font-size: 11.5px; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted-2); margin-bottom: 16px;
}
.flow-card .fc-head .live { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 4px rgba(47, 158, 141, .14); }
.flow { display: grid; gap: 9px; }
.flow li {
  display: grid; grid-template-columns: 26px 1fr auto; align-items: center; gap: 12px;
  padding: 11px 13px; border-radius: 12px; background: #fbf8f1;
  border: 1px solid #ece5d6; font-size: 13px;
}
.flow li .n { font-family: var(--mono); font-size: 10.5px; color: #b3a894; }
.flow li .fn { font-family: var(--mono); font-size: 12px; color: #1b6b5c; }
.flow li .fn small { display: block; font-family: var(--font); font-size: 11px; color: var(--muted); margin-top: 2px; }
.flow li .st { font-size: 10.5px; font-weight: 650; padding: 3px 8px; border-radius: 999px; white-space: nowrap; }
.flow li .st.done { background: var(--teal-soft); color: #1b6b5c; border: 1px solid #bfe0d7; }
.flow li .st.wait { background: #fdf3e3; color: #96601f; border: 1px solid #efd8b6; }
.flow li.dim { opacity: .64; }
.flow-note { margin-top: 14px; font-size: 11.5px; color: var(--muted-2); line-height: 1.7; }

/* ---------- 10 三视图 ---------- */
.views { background: linear-gradient(180deg, var(--paper) 0%, #efe9dc 100%); }
.tabs { display: flex; gap: 6px; padding: 6px; border-radius: 999px; background: #ebe4d8; border: 1px solid #ded6c5; width: fit-content; margin-inline: auto; }
.tabs button {
  border: 0; background: transparent; padding: 10px 20px; border-radius: 999px;
  font-size: 14px; font-weight: 600; color: #6a6156; cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease);
}
.tabs button[aria-selected="true"] { background: #fdfaf3; color: var(--ink); box-shadow: var(--shadow-s); }
.tab-panels { margin-top: 34px; }
.tab-panel[hidden] { display: none; }
.view-grid { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: clamp(24px, 4vw, 56px); align-items: center; }
.view-copy h3 { font-size: clamp(1.4rem, 2.2vw, 1.9rem); letter-spacing: -.02em; }
.view-copy p { margin-top: 12px; color: var(--text-2); font-size: 15px; line-height: 1.75; }
.view-copy ul { margin-top: 18px; display: grid; gap: 9px; }
.view-copy li { display: flex; gap: 10px; font-size: 14px; color: #3d4351; }
.view-copy li svg { width: 17px; height: 17px; color: var(--teal); flex: none; margin-top: 3px; }
.mock {
  background: #fdfaf3; border: 1px solid var(--line); border-radius: var(--radius-l);
  box-shadow: var(--shadow); padding: 18px; overflow: hidden;
}
.mock-bar { display: flex; align-items: center; gap: 6px; padding-bottom: 12px; border-bottom: 1px solid #ede7d9; }
.mock-bar i { width: 8px; height: 8px; border-radius: 50%; background: #e0d8c7; }
.mock-bar i:nth-child(1) { background: #e9cba9; }
.mock-bar i:nth-child(2) { background: #ecd6ae; }
.mock-bar i:nth-child(3) { background: #a8dbcf; }
.mock-bar span { margin-left: 8px; font-family: var(--mono); font-size: 10.5px; color: var(--muted-2); }
.mock-body { padding-top: 14px; }

/* 视图面板内的静态对话演示（不复用手机内的气泡样式） */
.demo-chat { display: grid; gap: 10px; }
.demo-chat .u {
  justify-self: end; max-width: 88%; padding: 10px 13px; border-radius: 15px 15px 4px 15px;
  background: linear-gradient(135deg, #f2c184, #dca25b); color: #1d1407;
  font-size: 12.8px; line-height: 1.6; box-shadow: 0 8px 18px -10px rgba(207, 138, 63, .80);
}
.demo-chat .b {
  justify-self: start; max-width: 92%; padding: 11px 13px; border-radius: 15px 15px 15px 4px;
  background: #f7f3ea; border: 1px solid #eee5d6; color: #33383f; font-size: 12.8px; line-height: 1.68;
}
.demo-chat .b strong { color: #8a5c1e; font-weight: 650; }
.demo-chat .t {
  justify-self: start; max-width: 92%; padding: 10px 12px; border-radius: 13px;
  background: rgba(47, 158, 141, .08); border: 1px solid rgba(47, 158, 141, .30);
  font-family: var(--mono); font-size: 10.8px; line-height: 1.75; color: #1b6b5c;
}
.demo-chat .t .row { display: flex; gap: 7px; align-items: center; }
.demo-chat .t .row + .row { color: rgba(15, 107, 89, .66); }

/* 周历图形：显式网格布局，事件按 grid-row / grid-column 摆放 */
.week {
  display: grid; grid-template-columns: 34px repeat(5, minmax(0, 1fr));
  grid-auto-rows: 22px; column-gap: 4px; row-gap: 2px;
  background-image: repeating-linear-gradient(to bottom, #f1ebdd 0 1px, transparent 1px 24px);
  background-position: 0 24px;
}
.week .hd { grid-row: 1; text-align: center; font-size: 10px; font-weight: 600; color: var(--muted-2); padding-bottom: 2px; }
.week .hd.today { color: var(--accent-deep); }
.week .tm { grid-column: 1; font-family: var(--mono); font-size: 8.5px; color: var(--muted-2); text-align: right; padding-right: 2px; line-height: 1.4; }
.week .ev {
  border-radius: 5px; padding: 2px 4px; font-size: 9px; line-height: 1.3; font-weight: 600;
  border-left: 2.5px solid; overflow: hidden;
}
.week .ev .t { display: block; font-family: var(--mono); font-size: 8px; font-weight: 500; opacity: .75; }
.ev-a { background: #f7e8d1; color: #8a5c1e; border-color: #e0a05a; }
.ev-b { background: #e4f3ee; color: #1b6b5c; border-color: #2f9e8d; }
.ev-c { background: #eae7f5; color: #443d9b; border-color: #6a63c9; }
.ev-d { background: #f8efd9; color: #7c5a12; border-color: #c48445; }
.week-legend { display: flex; gap: 14px; margin-top: 14px; font-size: 11px; color: var(--muted); flex-wrap: wrap; }
.week-legend span { display: inline-flex; align-items: center; gap: 6px; }
.week-legend i { width: 8px; height: 8px; border-radius: 3px; }

/* 记忆面板 */
.mem-panel { display: grid; gap: 10px; }
.mem-panel .grp { border: 1px solid #eae2d2; border-radius: 13px; padding: 12px 14px; background: #fbf9f3; }
.mem-panel h4 { font-size: 11.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted-2); font-weight: 650; }
.mem-panel p { font-size: 12.5px; color: #414855; margin-top: 6px; line-height: 1.65; }
.mem-panel .chips { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 8px; }
.mem-panel .chips span { font-size: 10.5px; padding: 3px 8px; border-radius: 6px; background: #fff; border: 1px solid #e5ddcd; color: #5d5446; }

/* ---------- 11 上手步骤 ---------- */
.quick-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.quick {
  background: #fdfaf3; border: 1px solid var(--line); border-radius: var(--radius-l);
  padding: 26px; position: relative; box-shadow: var(--shadow-s);
}
.quick .k { font-family: var(--mono); font-size: 12px; color: var(--accent-deep); font-weight: 600; }
.quick h3 { margin: 10px 0 8px; font-size: 17px; }
.quick p { font-size: 14px; color: var(--muted); line-height: 1.7; }
.quick .code {
  margin-top: 14px; padding: 10px 12px; border-radius: 9px; background: #16202c; color: #d8dfe8;
  font-family: var(--mono); font-size: 11px; line-height: 1.6; overflow-x: auto; white-space: nowrap;
}
.quick .code .k2 { color: #efcf9d; }
.quick .code .s2 { color: #a9e3d6; }

/* ---------- 12 平台下载 ---------- */
.platforms { background: #fdfaf3; border-block: 1px solid var(--line); }
.plat-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.plat {
  position: relative; display: flex; flex-direction: column; gap: 12px; padding: 24px 22px;
  border: 1px solid var(--line); border-radius: var(--radius-l); background: var(--paper-2);
  box-shadow: var(--shadow-s); transition: transform .22s var(--ease), box-shadow .22s var(--ease);
}
.plat:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.plat .pico { width: 38px; height: 38px; color: var(--ink); }
.plat .pico svg { width: 100%; height: 100%; }
.plat h3 { font-size: 16px; display: flex; align-items: center; gap: 8px; }
.st {
  display: inline-flex; align-items: center; gap: 5px; font-size: 10.5px; font-weight: 650;
  padding: 3px 8px; border-radius: 999px; line-height: 1.5; white-space: nowrap;
  vertical-align: 1px;
}
.st-ready { background: var(--teal-soft); color: #1b6b5c; border: 1px solid #a8dbd0; }
.st-preview { background: #f1eee7; color: #6a6156; border: 1px solid #e0d8c8; }
.plat p { font-size: 13px; color: var(--muted); line-height: 1.65; }
.plat dl { margin-top: auto; display: grid; gap: 6px; font-size: 12px; }
.plat dl div { display: flex; justify-content: space-between; gap: 10px; padding-top: 6px; border-top: 1px solid #f0eade; }
.plat dt { color: var(--muted-2); }
.plat dd { margin: 0; font-family: var(--mono); font-size: 11.5px; color: #3d4351; text-align: right; }
.plat .btn { width: 100%; margin-top: 6px; }

/* ---------- 13 权限与隐私 ---------- */
.privacy-band { position: relative; }
.perm-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.perm-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.perm-table caption { text-align: left; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted-2); padding-bottom: 10px; }
.perm-table th, .perm-table td { text-align: left; padding: 11px 12px; border-bottom: 1px solid #e7dfd0; vertical-align: top; }
.perm-table th { font-size: 11.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted-2); font-weight: 650; }
.perm-table td:first-child { font-family: var(--mono); font-size: 11.5px; color: #3d4351; white-space: nowrap; }
.perm-table td:last-child { color: var(--muted); }
.perm-table tr:last-child td { border-bottom: 0; }
.no-perm { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-l); padding: 26px; box-shadow: var(--shadow-s); }
.no-perm h3 { font-size: 16px; margin-bottom: 6px; }
.no-perm p { font-size: 13.5px; color: var(--muted); line-height: 1.7; }
.no-perm ul { margin-top: 16px; display: grid; gap: 8px; }
.no-perm li { display: flex; align-items: center; gap: 9px; font-size: 13.5px; color: #3d4351; }
.no-perm li svg { width: 16px; height: 16px; color: var(--teal); flex: none; }
.no-perm .note { margin-top: 18px; padding-top: 14px; border-top: 1px dashed #e4dccd; font-size: 12px; color: var(--muted-2); line-height: 1.7; }

/* ---------- 14 FAQ ---------- */
.faq { display: grid; gap: 10px; }
.faq details {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 4px 20px; box-shadow: var(--shadow-s); transition: border-color .2s var(--ease);
}
.faq details[open] { border-color: #d8cebb; }
.faq summary {
  cursor: pointer; list-style: none; padding: 16px 30px 16px 0; position: relative;
  font-size: 15.5px; font-weight: 600; letter-spacing: -.005em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 0; top: 50%; width: 9px; height: 9px;
  border-right: 1.8px solid #8b9098; border-bottom: 1.8px solid #8b9098;
  transform: translateY(-70%) rotate(45deg); transition: transform .22s var(--ease);
}
.faq details[open] summary::after { transform: translateY(-25%) rotate(-135deg); }
.faq .a { padding: 0 0 18px; max-width: 46em; font-size: 14.4px; color: var(--text-2); line-height: 1.8; }
.faq .a p + p { margin-top: 10px; }
.faq .a code { font-family: var(--mono); font-size: .88em; background: #f1ebdd; padding: 1px 5px; border-radius: 5px; }

/* ---------- 15 CTA 与页脚 ---------- */
.cta-band { background: var(--ink); color: #fdfaf3; position: relative; overflow: hidden; }
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(60% 80% at 50% 0%, rgba(224, 160, 90, .26), transparent 68%),
              radial-gradient(40% 60% at 88% 100%, rgba(47, 158, 141, .18), transparent 70%);
}
.cta-inner { position: relative; text-align: center; padding-block: clamp(64px, 8vw, 104px); }
.cta-inner h2 { margin-top: 16px; }
.cta-inner p { margin-top: 14px; color: rgba(253, 250, 243, .66); }
.cta-inner .btn-row { margin-top: 28px; justify-content: center; }

.site-foot { background: #060b12; color: rgba(253, 250, 243, .66); padding-top: 56px; font-size: 14px; }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 40px; }
.foot-brand .brand { color: #fdfaf3; }
.foot-brand p { margin-top: 14px; max-width: 36ch; font-size: 13px; line-height: 1.75; color: rgba(253, 250, 243, .5); }
.foot h4 { font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; color: rgba(253, 250, 243, .42); margin-bottom: 14px; font-weight: 650; }
.foot ul { display: grid; gap: 9px; }
.foot a { font-size: 13.5px; color: rgba(253, 250, 243, .72); transition: color .18s var(--ease); }
.foot a:hover { color: var(--gold); }
.foot-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08); padding-block: 20px;
  display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between;
  font-size: 12px; color: rgba(253, 250, 243, .4);
}
.foot-bottom .links { display: flex; flex-wrap: wrap; gap: 18px; }
.foot-bottom .links a { font-size: 12px; color: rgba(253, 250, 243, .5); }

/* ---------- 16 内页 ---------- */
.page-head {
  background: var(--ink); color: #fdfaf3; position: relative; overflow: hidden;
  padding-top: calc(var(--head-h) + clamp(44px, 6vw, 76px));
  padding-bottom: clamp(44px, 6vw, 72px);
}
.page-head::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(50% 70% at 12% 0%, rgba(224, 160, 90, .14), transparent 66%),
              radial-gradient(44% 60% at 92% 10%, rgba(74, 124, 178, .20), transparent 70%);
}
.page-head .wrap { position: relative; }
.crumbs { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: rgba(253, 250, 243, .5); }
.crumbs a:hover { color: var(--gold); }
.crumbs span { color: rgba(253, 250, 243, .28); }
.page-head h1 { margin-top: 18px; font-size: clamp(2.1rem, 4.2vw, 3.2rem); }
.page-head .lede { margin-top: 16px; max-width: 44em; }
.page-meta { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 10px 20px; font-size: 12.5px; color: rgba(253, 250, 243, .5); }
.page-meta .mono { color: rgba(253, 250, 243, .72); }

.page-body { padding-block: clamp(48px, 6vw, 84px); }
.dl-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.dl-card {
  border: 1px solid var(--line); border-radius: var(--radius-l); background: var(--paper-2);
  padding: 26px; box-shadow: var(--shadow-s); display: flex; flex-direction: column; gap: 12px;
}
.dl-card .top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.dl-card .pico { width: 40px; height: 40px; }
.dl-card h2 { font-size: 19px; letter-spacing: -.01em; }
.dl-card .sub { font-size: 12px; color: var(--muted-2); font-family: var(--mono); }
.dl-card p { font-size: 14px; color: var(--muted); line-height: 1.7; }
.dl-card dl { display: grid; gap: 7px; font-size: 12.5px; padding-top: 4px; }
.dl-card dl div { display: flex; justify-content: space-between; gap: 12px; padding-top: 7px; border-top: 1px solid #f0eade; }
.dl-card dt { color: var(--muted-2); }
.dl-card dd { margin: 0; text-align: right; color: #3d4351; font-family: var(--mono); font-size: 11.5px; }
.dl-card .btn { margin-top: auto; }
.dl-card .btn[aria-disabled="true"] { --btn-bg: #f1ebdd; --btn-fg: #8b9098; pointer-events: none; border-color: #e4dccc; }

.steps-list { counter-reset: s; display: grid; gap: 4px; }
.steps-list li {
  display: grid; grid-template-columns: 34px 1fr; gap: 16px; padding: 18px 0;
  border-top: 1px solid var(--line); font-size: 14.6px; color: var(--text-2); line-height: 1.72;
}
.steps-list li::before {
  counter-increment: s; content: counter(s); grid-column: 1; grid-row: 1;
  width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center;
  background: var(--ink); color: #fff; font-family: var(--mono); font-size: 12px; font-weight: 600;
}
.steps-list li:first-child { border-top: 0; }
.steps-list strong { color: var(--text); }

.hash-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.hash-table th, .hash-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid #eae2d2; vertical-align: top; }
.hash-table th { font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted-2); }
.hash-table td { font-family: var(--mono); font-size: 11.5px; color: #3d4351; word-break: break-all; }
.hash-table td:first-child { font-family: var(--font); font-size: 12.5px; white-space: nowrap; color: var(--text-2); }

/* 提示条 */
.notice {
  display: flex; gap: 12px; padding: 16px 18px; border-radius: var(--radius);
  border: 1px solid #eed6b2; background: #fcf5e9; font-size: 13.5px; color: #7a5518; line-height: 1.7;
}
.notice svg { width: 18px; height: 18px; flex: none; margin-top: 2px; color: #a8711f; }
.notice strong { color: #54390f; }
.notice.teal { border-color: #bfe0d7; background: #eff8f4; color: #1b6b5c; }
.notice.teal svg { color: #1f7a69; }
.notice.neutral { border-color: #e0d8c8; background: #fcfaf3; color: #5d5446; }
.notice.neutral svg { color: #8a7f6a; }

/* ---------- 17 正文 ---------- */
.prose { max-width: 740px; font-size: 15px; line-height: 1.85; color: var(--text-2); }
.prose > * + * { margin-top: 16px; }
.prose h2 { font-size: 22px; margin-top: 40px; color: var(--text); letter-spacing: -.012em; }
.prose h3 { font-size: 17px; margin-top: 28px; color: var(--text); }
.prose ul, .prose ol { padding-left: 22px; display: grid; gap: 8px; }
.prose ul li { list-style: disc; }
.prose ol li { list-style: decimal; }
.prose a { color: var(--accent-deep); border-bottom: 1px solid rgba(150, 96, 31, .32); }
.prose strong { color: var(--text); }
.prose .todo {
  background: #faf0d8; border: 1px dashed #c9a05a; border-radius: 6px;
  padding: 1px 6px; font-size: .92em; color: #7c5a12;
}
.prose table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.prose th, .prose td { border: 1px solid #e4dccc; padding: 9px 12px; text-align: left; }
.prose th { background: #f8f4ea; font-size: 12.5px; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin-block: 32px; }
.prose blockquote {
  border-left: 3px solid var(--accent); padding: 4px 0 4px 16px; color: var(--muted);
  font-size: 14px;
}
.legal-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: clamp(24px, 4vw, 64px); align-items: start; }
.toc { position: sticky; top: calc(var(--head-h) + 24px); font-size: 13px; }
.toc h2 { font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 12px; }
.toc ol { display: grid; gap: 2px; counter-reset: t; }
.toc a { display: block; padding: 7px 10px; border-radius: 8px; color: var(--muted); line-height: 1.5; }
.toc a:hover { background: #f1ebdd; color: var(--text); }

/* 更新日志 */
.log-list { display: grid; gap: 0; }
.log-item { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: clamp(16px, 3vw, 40px); padding: 30px 0; border-top: 1px solid var(--line); }
.log-item:first-child { border-top: 0; }
.log-ver { position: sticky; top: calc(var(--head-h) + 24px); align-self: start; }
.log-ver .v { font-family: var(--mono); font-size: 20px; font-weight: 600; letter-spacing: -.02em; }
.log-ver .d { font-size: 12px; color: var(--muted-2); margin-top: 4px; font-family: var(--mono); }
.log-ver .badge { margin-top: 10px; }
.log-body h3 { font-size: 16px; margin-bottom: 10px; }
.log-body ul { display: grid; gap: 9px; }
.log-body li { display: flex; gap: 10px; font-size: 14.4px; color: var(--text-2); line-height: 1.7; }
.log-body li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #c7bfad; margin-top: 9px; flex: none; }
.log-body .type { font-size: 10.5px; font-weight: 700; letter-spacing: .04em; padding: 1px 7px; border-radius: 5px; margin-right: 8px; display: inline-block; transform: translateY(-1px); }
.type-new { background: #e4f3ee; color: #1b6b5c; }
.type-fix { background: #f7e8d1; color: #8a5c1e; }
.type-opt { background: #eae7f5; color: #443d9b; }

/* ---------- 18 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-copy { max-width: none; }
  .hero-visual { order: 2; }
  .hero { text-align: left; }
  .bento { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .b5, .b7, .b6, .b8 { grid-column: span 6; }
  .b4 { grid-column: span 3; }
  .b3 { grid-column: span 3; }
  .how-grid { grid-template-columns: 1fr; gap: 40px; }
  .plat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .view-grid { grid-template-columns: 1fr; gap: 28px; }
  .perm-grid { grid-template-columns: 1fr; gap: 32px; }
  .legal-layout { grid-template-columns: 1fr; }
  .toc { position: static; display: none; }
}
@media (max-width: 900px) {
  .site-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .head-actions .btn { display: none; }
  .head-inner { gap: 16px; }
  .brand small { display: none; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .quick-grid { grid-template-columns: 1fr; }
  .dl-grid { grid-template-columns: 1fr; }
  .log-item { grid-template-columns: 1fr; gap: 12px; }
  .log-ver { position: static; display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
  .log-ver .badge { margin-top: 0; }
  .hero-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  :root { --head-h: 62px; }
  .wrap { padding-inline: 18px; }
  .bento { grid-template-columns: 1fr; }
  .b5, .b7, .b6, .b8, .b4, .b3 { grid-column: span 1; }
  .plat-grid { grid-template-columns: 1fr; }
  .hero { padding-top: calc(var(--head-h) + 40px); }
  .hero h1 { font-size: clamp(2.15rem, 9vw, 2.9rem); }
  .phone-screen { height: 580px; }
  .chat { gap: 10px; padding: 14px 14px 6px; }
  .msg { font-size: 12.2px; }
  .msg { max-width: 90%; }
  .tabs { width: 100%; }
  .tabs button { flex: 1; padding: 9px 8px; font-size: 13px; }
  .perm-table td:first-child { white-space: normal; }
  .perm-table th:nth-child(3), .perm-table td:nth-child(3) { display: none; }
  .foot-grid { grid-template-columns: 1fr; gap: 24px; }
  .foot-bottom { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  .hero-cta .btn { width: 100%; }
  .hero-cta, .cta-inner .btn-row { flex-direction: column; align-items: stretch; }
  .card { padding: 20px; }
  .quick, .dl-card, .plat { padding: 20px; }
}

/* ---------- 19 动效与可访问性 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
  .msg, .tool-card, .perm { opacity: 1; transform: none; }
  .phone-input .caret { animation: none; }
}
@media print {
  .site-head, .drawer, .cta-band, .site-foot, .hero-visual { display: none; }
  body { background: #fff; }
}