:root {
  /* 品牌色：紫罗兰取自 App 强调色 #5754D7，奶黄取自机器人眼睛 */
  --canvas: oklch(0.985 0.006 85);
  --paper: oklch(0.965 0.009 85);
  --sunk: oklch(0.94 0.011 85);
  --ink: oklch(0.24 0.045 282);
  --ink-2: oklch(0.42 0.03 282);
  --ink-3: oklch(0.58 0.02 282);
  --line: oklch(0.24 0.045 282 / 0.10);
  --violet: #5754D7;
  --violet-deep: oklch(0.42 0.17 280);
  --violet-wash: oklch(0.94 0.035 282);
  --eye: oklch(0.92 0.1 95);
  --eye-deep: oklch(0.78 0.13 85);
  --night: oklch(0.2 0.04 282);

  --r-s: 8px; --r-m: 14px; --r-l: 22px; --r-pill: 999px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);

  --latin: "Bricolage Grotesque", -apple-system, BlinkMacSystemFont, sans-serif;
  --cn: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --mono: "Martian Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--latin), var(--cn);
  font-family: "Bricolage Grotesque", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { margin: 0; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
:focus-visible { outline: 2.5px solid var(--violet); outline-offset: 3px; border-radius: 6px; }

.wrap { width: min(1180px, 100% - 32px); margin-inline: auto; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  min-height: 52px; padding: 0 24px 0 20px;
  border: 0; border-radius: var(--r-pill);
  font: inherit; font-weight: 700; font-size: 17px; text-decoration: none;
  cursor: pointer; touch-action: manipulation;
  transition: transform 160ms var(--ease), background-color 160ms var(--ease), box-shadow 160ms var(--ease);
}
.btn:active { transform: scale(0.96); }
.btn-primary {
  background: var(--violet); color: #fff;
  box-shadow: 0 1px 0 oklch(1 0 0 / 0.25) inset, 0 8px 20px -8px oklch(0.45 0.2 280 / 0.6), 0 2px 4px oklch(0.3 0.1 280 / 0.2);
}
.btn-ghost { background: transparent; color: var(--ink); padding: 0 16px; }
@media (hover: hover) {
  .btn-primary:hover { background: var(--violet-deep); }
  .btn-ghost:hover { background: var(--sunk); }
}
.btn svg { flex: none; }
.btn small { font-weight: 500; opacity: 0.72; font-size: 13px; }

/* ---------- 导航 ---------- */
[data-promotion-only][hidden] { display: none !important; }
.promotion-banner {
  display: flex; align-items: center; justify-content: center; gap: 10px 22px; flex-wrap: wrap;
  min-height: 46px; padding: 10px 20px; background: var(--eye); color: var(--ink);
  text-align: center; text-decoration: none; font-size: 13px; line-height: 1.5;
}
.promotion-banner-title { font-weight: 750; }
.promotion-banner-detail { color: var(--ink-2); }
.promotion-banner-cta { display: inline-flex; gap: 7px; align-items: center; font-weight: 700; text-decoration: underline; text-underline-offset: 3px; }
.promotion-banner:focus-visible { outline-offset: -4px; outline-color: var(--ink); }
@media (hover: hover) { .promotion-banner:hover { background: oklch(0.88 0.11 92); } }
@media (max-width: 540px) {
  .promotion-banner { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1px 14px; padding: 10px 18px; text-align: left; }
  .promotion-banner-detail { grid-column: 1; font-size: 12px; }
  .promotion-banner-cta { grid-column: 2; grid-row: 1 / span 2; white-space: nowrap; }
}
.nav {
  position: sticky; top: 12px; z-index: 50;
  width: min(1180px, 100% - 24px); margin: 12px auto 0;
  display: flex; align-items: center; gap: 12px;
  padding: 8px 8px 8px 14px;
  background: oklch(0.985 0.006 85 / 0.92);
  border-radius: var(--r-pill);
  box-shadow: 0 0 0 1px var(--line), 0 6px 24px -12px oklch(0.24 0.045 282 / 0.25);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; font-size: 19px; letter-spacing: -0.01em; }
.brand img { width: 34px; height: 34px; }
.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-links a { padding: 8px 14px; border-radius: var(--r-pill); text-decoration: none; font-size: 15px; color: var(--ink-2); transition: background-color 160ms var(--ease); }
@media (hover: hover) { .nav-links a:hover { background: var(--sunk); color: var(--ink); } }
.nav .btn { min-height: 42px; font-size: 15px; padding: 0 18px 0 14px; }
@media (max-width: 760px) { .nav-links { display: none; } .nav .btn { margin-left: auto; } }

.lang {
  display: inline-flex; align-items: center; justify-content: center; min-width: 44px; height: 42px; padding: 0 12px;
  flex: none; white-space: nowrap;
  border-radius: var(--r-pill); text-decoration: none; font: 500 13px var(--mono); color: var(--ink-2);
  box-shadow: 0 0 0 1px var(--line); transition: background-color 160ms var(--ease);
}
@media (hover: hover) { .lang:hover { background: var(--sunk); color: var(--ink); } }
@media (max-width: 760px) { .lang { margin-left: auto; } .nav .btn { margin-left: 0; } }
.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; }

/* ---------- 首屏 ---------- */
.hero { padding: 72px 0 40px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr); gap: 56px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px 6px 8px; border-radius: var(--r-pill);
  background: var(--violet-wash); color: var(--violet-deep);
  font-size: 14px; font-weight: 700;
}
.eyebrow i { width: 8px; height: 8px; border-radius: 50%; background: var(--violet); box-shadow: 0 0 0 4px oklch(0.55 0.2 280 / 0.18); }
.hero h1 {
  margin-top: 22px;
  font-size: clamp(40px, 5vw, 66px); line-height: 1.08; letter-spacing: -0.03em; font-weight: 800;
}
html[lang="en"] .hero h1 { font-size: clamp(36px, 3.9vw, 52px); line-height: 1.1; }
@media (max-width: 980px) { html[lang="en"] .hero h1 { font-size: clamp(28px, 8vw, 52px); } }
.hero h1 .swap {
  display: inline-grid; vertical-align: bottom;
  color: var(--violet);
}
.hero h1 .swap span { grid-area: 1 / 1; transition: opacity 380ms var(--ease), transform 380ms var(--ease), filter 380ms var(--ease); }
.hero h1 .swap span:not(.on) { opacity: 0; transform: translateY(0.35em); filter: blur(6px); }
.hero h1 .swap span[data-w]::before { content: attr(data-w); }
.hero h1 .swap span.out { opacity: 0; transform: translateY(-0.3em); filter: blur(6px); }
.hero .lede { margin-top: 22px; font-size: 19px; color: var(--ink-2); max-width: 30em; }
.cta-row { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.facts { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 6px 20px; padding: 0; list-style: none; color: var(--ink-3); font-size: 14px; }
.facts li { display: flex; align-items: center; gap: 7px; }
.facts svg { color: var(--violet); }

/* Mac 窗口 */
.window {
  position: relative;
  border-radius: var(--r-l);
  background: #fff;
  box-shadow: 0 0 0 1px var(--line), 0 40px 80px -30px oklch(0.24 0.06 282 / 0.35), 0 12px 24px -12px oklch(0.24 0.06 282 / 0.18);
  overflow: hidden;
  display: grid; grid-template-columns: 168px 1fr;
  min-height: 470px;
}
.win-side { background: var(--paper); padding: 14px 12px; display: flex; flex-direction: column; gap: 4px; }
.lights { display: flex; gap: 7px; margin: 2px 4px 18px; }
.lights i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.lights i:nth-child(2) { background: #febc2e; } .lights i:nth-child(3) { background: #28c840; }
.win-brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 15px; margin: 0 4px 14px; }
.win-brand img { width: 26px; height: 26px; }
.side-label { font-size: 11px; color: var(--ink-3); margin: 8px 6px 2px; }
.side-item { display: flex; align-items: center; gap: 8px; padding: 7px 8px; border-radius: var(--r-s); font-size: 13px; color: var(--ink-2); }
.side-item.on { background: var(--violet); color: #fff; font-weight: 600; }
.side-item svg { flex: none; }

.win-main { padding: 18px 20px 20px; min-width: 0; }
.win-top { display: flex; align-items: center; gap: 8px; }
.win-search { flex: 1; min-width: 0; height: 36px; display: flex; align-items: center; gap: 8px; padding: 0 12px; border-radius: var(--r-s); background: var(--paper); color: var(--ink-3); font-size: 13px; white-space: nowrap; overflow: hidden; }
.regions { display: flex; padding: 3px; gap: 2px; border-radius: 10px; background: var(--paper); position: relative; }
.regions button {
  position: relative; z-index: 1;
  border: 0; background: transparent; cursor: pointer;
  height: 30px; min-width: 44px; padding: 0 8px; border-radius: 7px;
  font: 500 12px var(--mono); color: var(--ink-2);
  transition: color 200ms var(--ease);
}
.regions button.on { color: #fff; }
.regions .pill { position: absolute; top: 3px; left: 3px; height: 30px; border-radius: 7px; background: var(--ink); transition: transform 420ms var(--ease), width 420ms var(--ease); }

.acct {
  margin-top: 14px; display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: var(--r-m);
  background: var(--violet-wash); color: var(--violet-deep); font-size: 13px;
}
.acct .flag { font-size: 20px; line-height: 1; }
.acct b { color: var(--ink); font-weight: 600; }
.acct .auto { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.acct .auto i { width: 7px; height: 7px; border-radius: 50%; background: #28c840; }
.acct-text { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.list-head { display: flex; justify-content: space-between; margin: 16px 4px 6px; font-size: 12px; color: var(--ink-3); }
.apps { list-style: none; margin: 0; padding: 0; }
.app {
  display: grid; grid-template-columns: 40px 1fr auto auto; gap: 12px; align-items: center;
  padding: 9px 4px; border-bottom: 1px solid var(--line);
  transition: opacity 320ms var(--ease), transform 320ms var(--ease), filter 320ms var(--ease);
}
.app.hide { opacity: 0; transform: translateY(8px); filter: blur(3px); }
.app:last-child { border-bottom: 0; }
.icon { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 17px; box-shadow: 0 0 0 1px oklch(0 0 0 / 0.06) inset; }
.app-name { font-size: 14px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.app-dev { font-size: 12px; color: var(--ink-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.app .ver { font-size: 11px; color: var(--ink-3); }
.get { height: 28px; padding: 0 12px; border-radius: var(--r-pill); background: var(--paper); color: var(--violet); font-weight: 700; font-size: 12px; display: grid; place-items: center; }

.hero-visual { position: relative; }
.sticker {
  position: absolute; z-index: 2; right: -14px; bottom: -22px;
  display: flex; align-items: center; gap: 10px;
  padding: 10px 16px 10px 10px; border-radius: var(--r-pill);
  background: var(--eye); color: var(--night); font-weight: 700; font-size: 14px;
  box-shadow: 0 10px 24px -10px oklch(0.5 0.12 85 / 0.6);
  transform: rotate(-3deg);
}
.sticker img { width: 34px; height: 34px; }

/* ---------- 区块通用 ---------- */
section { scroll-margin-top: 90px; }
.block { padding: 112px 0 0; }
.kicker { font: 500 12px var(--mono); letter-spacing: 0.04em; color: var(--violet); text-transform: uppercase; }
.block h2 { margin-top: 14px; font-size: clamp(32px, 4.4vw, 52px); line-height: 1.1; letter-spacing: -0.025em; font-weight: 800; max-width: 16em; }
.block .sub { margin-top: 16px; color: var(--ink-2); font-size: 18px; max-width: 34em; }

/* 对比 */
.versus { margin-top: 48px; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.vs-col { border-radius: var(--r-l); padding: 32px; }
.vs-old { background: var(--sunk); }
.vs-new { background: var(--night); color: oklch(0.96 0.01 282); }
.vs-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.vs-head h3 { font-size: 20px; font-weight: 700; }
.vs-count { font-size: clamp(56px, 7vw, 88px); line-height: 0.9; font-weight: 800; letter-spacing: -0.04em; font-variant-numeric: tabular-nums; }
.vs-old .vs-count { color: var(--ink-3); }
.vs-new .vs-count { color: var(--eye); }
.vs-count small { font-size: 18px; letter-spacing: 0; font-weight: 600; margin-left: 4px; }
.steps-list { list-style: none; padding: 0; margin: 26px 0 0; display: grid; gap: 2px; counter-reset: s; }
.steps-list li { counter-increment: s; display: grid; grid-template-columns: 34px 1fr; gap: 8px; padding: 9px 0; font-size: 15px; border-top: 1px solid var(--line); }
.steps-list li::before { content: counter(s, decimal-leading-zero); font: 500 12px/1.9 var(--mono); color: var(--ink-3); }
.vs-old .steps-list li { color: var(--ink-2); }
.vs-old .steps-list li s { text-decoration-color: oklch(0.6 0.15 25 / 0.6); }
.vs-new .steps-list li { border-top-color: oklch(1 0 0 / 0.08); }
.vs-new .steps-list li::before { color: oklch(1 0 0 / 0.45); }
.vs-new .tag { display: inline-block; margin-top: 22px; padding: 6px 12px; border-radius: var(--r-pill); background: oklch(1 0 0 / 0.07); font-size: 13px; color: oklch(1 0 0 / 0.75); }

/* 能力 */
.features { margin-top: 56px; display: grid; gap: 0; }
.feat { display: grid; grid-template-columns: 90px minmax(0, 1fr) minmax(0, 1.05fr); gap: 32px; align-items: center; padding: 40px 0; border-top: 1px solid var(--line); }
.feat:last-child { border-bottom: 1px solid var(--line); }
.feat-no { font: 500 13px var(--mono); color: var(--ink-3); align-self: start; padding-top: 8px; }
.feat h3 { font-size: clamp(24px, 2.6vw, 30px); line-height: 1.2; letter-spacing: -0.015em; font-weight: 800; }
.feat p { margin-top: 12px; color: var(--ink-2); }
.demo { border-radius: var(--r-l); background: var(--paper); padding: 22px; min-height: 180px; display: grid; align-content: center; }

/* demo: 账号匹配 */
.match { display: grid; gap: 8px; }
.match-row { display: grid; grid-template-columns: 54px 1fr auto; gap: 12px; align-items: center; padding: 10px 14px; border-radius: var(--r-m); background: #fff; box-shadow: 0 1px 3px oklch(0.24 0.045 282 / 0.08); font-size: 14px; }
.match-row .mono { font-size: 12px; color: var(--ink-2); }
.match-row .em { color: var(--ink-3); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.match-row .ok { font-size: 12px; font-weight: 700; color: var(--violet); white-space: nowrap; }
.match-row.active { box-shadow: 0 0 0 2px var(--violet), 0 6px 16px -8px oklch(0.45 0.2 280 / 0.5); }

/* demo: 安装到 iPhone */
.install { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 14px; }
.dev { display: grid; justify-items: center; gap: 8px; font-size: 12px; color: var(--ink-3); }
.mac-g { width: 74px; height: 50px; border-radius: 6px; background: var(--ink); position: relative; }
.mac-g::after { content: ""; position: absolute; left: -8px; right: -8px; bottom: -6px; height: 6px; border-radius: 0 0 6px 6px; background: var(--ink-2); }
.phone-g { width: 36px; height: 66px; border-radius: 9px; background: var(--ink); padding: 4px; }
.phone-g span { display: block; height: 100%; border-radius: 6px; background: var(--violet-wash); position: relative; overflow: hidden; }
.phone-g span::after { content: ""; position: absolute; inset: auto 0 0; height: var(--p, 0%); background: var(--violet); transition: height 300ms linear; }
.wire { position: relative; height: 2px; background: repeating-linear-gradient(90deg, var(--ink-3) 0 6px, transparent 6px 12px); opacity: 0.5; }
.packet { position: absolute; top: 50%; left: 0; width: 18px; height: 18px; margin-top: -9px; border-radius: 5px; background: var(--violet); animation: travel 1.8s var(--ease) infinite; }
@keyframes travel { from { transform: translateX(0); opacity: 0; } 15% { opacity: 1; } 85% { opacity: 1; } to { transform: translateX(var(--w, 120px)); opacity: 0; } }
.install-status { grid-column: 1 / -1; margin-top: 14px; display: flex; justify-content: space-between; font-size: 13px; color: var(--ink-2); }

/* 三步 */
.how { margin-top: 48px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; counter-reset: h; }
.how li { list-style: none; padding: 28px 28px 0 0; border-top: 2px solid var(--ink); position: relative; }
.how li + li { padding-left: 28px; border-left: 1px solid var(--line); }
.how .n { font: 500 13px var(--mono); color: var(--violet); }
.how h3 { margin-top: 10px; font-size: 22px; font-weight: 700; letter-spacing: -0.01em; }
.how p { margin-top: 8px; color: var(--ink-2); font-size: 16px; }
.how ol { padding: 0; margin: 0; display: contents; }

/* 价格 */
.pricing { margin-top: 48px; display: grid; grid-template-columns: 0.85fr 1fr 1.08fr; gap: 16px; align-items: stretch; }
.plan { position: relative; border-radius: var(--r-l); padding: 30px 28px 28px; display: flex; flex-direction: column; }
.plan-free { padding-left: 0; }
.plan-annual { background: var(--paper); }
.plan-life { background: var(--night); color: oklch(0.96 0.01 282); box-shadow: 0 30px 60px -30px oklch(0.24 0.08 282 / 0.55); }
.plan-name { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 17px; font-weight: 700; }
.plan-badge { padding: 4px 10px; border-radius: var(--r-pill); background: var(--eye); color: var(--night); font-size: 12px; font-weight: 800; white-space: nowrap; }
.plan-price { margin-top: 18px; display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.plan-price b { font-size: clamp(44px, 4.6vw, 56px); line-height: 1; font-weight: 800; letter-spacing: -0.035em; font-variant-numeric: tabular-nums; }
.plan-life .plan-price b { color: var(--eye); }
.plan-price span { font-size: 14px; color: var(--ink-3); }
.plan-price del { font-size: 18px; color: var(--ink-3); text-decoration-thickness: 1px; }
.plan-life .plan-price del { color: oklch(1 0 0 / 0.55); }
.plan-annual .plan-badge { background: var(--violet-wash); color: var(--violet-deep); }
.promotion-period { margin-top: 12px; font-size: 13px; color: var(--ink-3); }
.plan-offer-period { margin-top: 10px; font-size: 12px; line-height: 1.6; color: var(--ink-3); }
.plan-life .plan-offer-period { color: oklch(1 0 0 / 0.65); }
.pricing-terms { margin-top: 24px; max-width: 900px; font-size: 14px; line-height: 1.8; color: var(--ink-2); }
.guide-link { margin-top: 24px; }
.guide-link a { color: var(--violet-deep); font-weight: 600; text-underline-offset: 4px; }
.plan-life .plan-price span { color: oklch(1 0 0 / 0.55); }
.plan-note { margin-top: 10px; font-size: 14px; color: var(--ink-2); min-height: 2.9em; }
.plan-life .plan-note { color: oklch(1 0 0 / 0.68); }
.perks { list-style: none; margin: 22px 0 26px; padding: 18px 0 0; border-top: 1px solid var(--line); display: grid; gap: 10px; font-size: 15px; }
.plan-life .perks { border-top-color: oklch(1 0 0 / 0.1); }
.perks li { display: grid; grid-template-columns: 20px 1fr; gap: 8px; align-items: start; }
.perks svg { margin-top: 4px; color: var(--violet); }
.plan-life .perks svg { color: var(--eye); }
.perks li.no { color: var(--ink-3); }
.perks li.no svg { color: var(--ink-3); }
.plan .btn { margin-top: auto; justify-content: center; width: 100%; }
.plan-free .btn { background: var(--sunk); color: var(--ink); }
.plan-annual .btn { background: #fff; color: var(--violet); box-shadow: 0 0 0 1px var(--line), 0 1px 2px oklch(0.24 0.045 282 / 0.08); }
.plan-life .btn-primary { background: var(--eye); color: var(--night); box-shadow: 0 8px 20px -8px oklch(0.75 0.13 85 / 0.6); }
@media (hover: hover) {
  .plan-free .btn:hover { background: oklch(0.91 0.012 85); }
  .plan-annual .btn:hover { background: var(--violet-wash); }
  .plan-life .btn-primary:hover { background: oklch(0.88 0.11 92); }
}
.pricing-foot { margin-top: 22px; font-size: 14px; color: var(--ink-3); display: flex; flex-wrap: wrap; gap: 6px 22px; }
.pricing-foot span { display: inline-flex; align-items: center; gap: 7px; }
.price-hint { margin-top: 14px; font-size: 14px; color: var(--ink-3); }
.price-hint a { color: var(--violet); font-weight: 600; text-decoration: none; }
.price-hint b { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
@media (max-width: 980px) {
  .pricing { grid-template-columns: 1fr; }
  .plan-free { padding-left: 28px; background: transparent; box-shadow: 0 0 0 1px var(--line); }
  .plan-note { min-height: 0; }
  }

/* 坦诚 */
.honest { margin-top: 112px; border-radius: 32px; background: var(--night); color: oklch(0.95 0.01 282); padding: clamp(32px, 6vw, 72px); display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 48px; }
.honest .kicker { color: var(--eye); }
.honest h2 { margin-top: 14px; font-size: clamp(30px, 3.8vw, 44px); line-height: 1.12; letter-spacing: -0.025em; font-weight: 800; }
.honest .sub { margin-top: 16px; color: oklch(1 0 0 / 0.68); font-size: 17px; }
.promises { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.promises li { display: grid; grid-template-columns: 28px 1fr; gap: 14px; padding: 18px 0; border-top: 1px solid oklch(1 0 0 / 0.08); }
.promises li:first-child { border-top: 0; padding-top: 4px; }
.promises svg { color: var(--eye); margin-top: 3px; }
.promises b { display: block; font-size: 17px; }
.promises span { color: oklch(1 0 0 / 0.62); font-size: 15px; }
.promises .warn svg { color: oklch(0.8 0.13 50); }

/* FAQ */
.faq { margin-top: 40px; max-width: 820px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 22px 2px; font-size: 18px; font-weight: 700; min-height: 44px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary h3 { font: inherit; }
.faq summary .plus { flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--sunk); position: relative; transition: transform 240ms var(--ease), background-color 240ms var(--ease); }
.faq summary .plus::before, .faq summary .plus::after { content: ""; position: absolute; left: 50%; top: 50%; width: 11px; height: 2px; margin: -1px 0 0 -5.5px; background: var(--ink); border-radius: 2px; }
.faq summary .plus::after { transform: rotate(90deg); }
.faq details[open] .plus { transform: rotate(45deg); background: var(--violet-wash); }
.faq .ans { padding: 0 2px 24px; color: var(--ink-2); max-width: 44em; }
.faq code { font-family: var(--mono); font-size: 0.85em; background: var(--sunk); padding: 2px 6px; border-radius: 5px; }

/* 收尾 CTA */
.final { margin: 128px auto 0; text-align: center; padding: 0 0 96px; }
/* 吉祥物：眼睛由 CSS 绘制（robot-body.png 是去掉眼睛的 robot.png），行为见 site.js */
.final-bot { --u: 1.4px; position: relative; width: 140px; height: 140px; margin: 0 auto; cursor: pointer; -webkit-tap-highlight-color: transparent; user-select: none; touch-action: manipulation; }
.bot-float { position: absolute; inset: 0; z-index: 1; animation: bob 4s ease-in-out infinite; rotate: var(--tilt, 0deg); transition: rotate 500ms var(--ease); }
@keyframes bob { 50% { translate: 0 -8px; } }
.bot-body { position: absolute; inset: 0; transform-origin: 50% 88%; }
.bot-body img { display: block; width: 100%; height: 100%; filter: drop-shadow(0 18px 24px oklch(0.45 0.2 280 / 0.25)); pointer-events: none; }
.bot-shadow { position: absolute; left: 22%; right: 22%; bottom: -14px; height: 10px; border-radius: 50%; background: oklch(0.3 0.08 280 / 0.16); filter: blur(4px); animation: shadow 4s ease-in-out infinite; }
@keyframes shadow { 50% { scale: 0.86; opacity: 0.7; } }

.bot-eyes { position: absolute; inset: 0; translate: var(--ex, 0px) var(--ey, 0px); transition: translate 260ms var(--ease); pointer-events: none; }
.eye { position: absolute; top: 52.5%; width: calc(7 * var(--u)); height: calc(13.5 * var(--u)); margin: calc(-6.75 * var(--u)) 0 0 calc(-3.5 * var(--u)); transition: transform 90ms ease-out; }
.eye:first-child { left: 40.7%; } .eye:last-child { left: 59.1%; }
.eye::before, .eye::after { content: ""; position: absolute; inset: 0; transition: opacity 120ms, transform 220ms var(--ease); }
.eye::before { border-radius: 99px; background: linear-gradient(#fdf8b0, #fcef95 55%, #fcd870); box-shadow: 0 0 calc(3 * var(--u)) oklch(0.92 0.12 95 / 0.55), inset 0 calc(-1 * var(--u)) calc(1.4 * var(--u)) oklch(0.8 0.13 80 / 0.6); }
/* 开心：^ ^ */
.eye::after { inset: auto; left: 50%; top: 50%; width: calc(9 * var(--u)); height: calc(5.5 * var(--u)); margin: calc(-3.5 * var(--u)) 0 0 calc(-4.5 * var(--u)); border: calc(2.3 * var(--u)) solid #fcef95; border-bottom: 0; border-radius: calc(9 * var(--u)) calc(9 * var(--u)) 0 0; filter: drop-shadow(0 0 calc(2 * var(--u)) oklch(0.92 0.12 95 / 0.6)); opacity: 0; transform: scale(0.4); }
.final-bot.happy .eye::before { opacity: 0; transform: scaleY(0.2); }
.final-bot.happy .eye::after { opacity: 1; transform: none; }
/* 眨眼 / 单眼眨 */
.final-bot.blink .eye, .final-bot.wink .eye:last-child { transform: scaleY(0.1); }
/* 兴奋：眼睛变大 */
.final-bot.wow .eye { transform: scale(1.16, 1.12); }
/* 犯困：眯眼 */
.final-bot.sleepy .eye { transform: scaleY(0.35) translateY(calc(6 * var(--u))); transition-duration: 900ms; }
/* 晕：@ @ */
.final-bot.dizzy .eye::before { border-radius: 50%; inset: calc(2 * var(--u)) calc(-1.5 * var(--u)); background: repeating-radial-gradient(circle, #fcef95 0 calc(1.1 * var(--u)), transparent calc(1.1 * var(--u)) calc(2.2 * var(--u))); box-shadow: none; animation: spin 700ms linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.bot-blush { position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity 300ms; }
.bot-blush i { position: absolute; top: 61%; width: calc(8 * var(--u)); height: calc(4 * var(--u)); border-radius: 50%; background: oklch(0.72 0.17 10 / 0.55); filter: blur(calc(1.2 * var(--u))); }
.bot-blush i:first-child { left: 32%; } .bot-blush i:last-child { left: 62%; }
.final-bot.happy .bot-blush, .final-bot.shy .bot-blush { opacity: 1; }

/* 动作 */
.final-bot.hop .bot-body { animation: hop 620ms cubic-bezier(0.3, 0, 0.3, 1) 2; }
.final-bot.hop .bot-shadow { animation: shadow-hop 620ms cubic-bezier(0.3, 0, 0.3, 1) 2; }
@keyframes hop {
  0%, 100% { transform: none; }
  14% { transform: scale(1.1, 0.88); }
  30% { transform: translateY(-22px) scale(0.94, 1.07); }
  52% { transform: translateY(-30px) scale(1); }
  76% { transform: translateY(0) scale(1.12, 0.86); }
  88% { transform: scale(0.97, 1.03); }
}
@keyframes shadow-hop { 0%, 14%, 76%, 100% { scale: 1; opacity: 1; } 52% { scale: 0.6; opacity: 0.4; } }
.final-bot.flip .bot-body { animation: flip 900ms cubic-bezier(0.3, 0, 0.3, 1); }
.final-bot.flip .bot-shadow { animation: shadow-hop 900ms cubic-bezier(0.3, 0, 0.3, 1); }
@keyframes flip {
  0%, 100% { transform: none; }
  12% { transform: scale(1.12, 0.86); }
  30% { transform: translateY(-46px) scale(0.95, 1.06) rotate(0deg); }
  62% { transform: translateY(-46px) rotate(360deg); }
  84% { transform: translateY(0) rotate(360deg) scale(1.12, 0.88); }
  94% { transform: rotate(360deg) scale(0.98, 1.02); }
}
.final-bot.wiggle .bot-body { animation: wiggle 900ms ease-in-out; }
@keyframes wiggle { 0%, 100% { transform: none; } 15% { transform: rotate(-9deg); } 35% { transform: rotate(8deg); } 55% { transform: rotate(-6deg); } 75% { transform: rotate(4deg); } }
.final-bot.dizzy .bot-body { animation: wobble 1.6s ease-in-out; }
@keyframes wobble { 0%, 100% { transform: none; } 20% { transform: rotate(-12deg) translateX(-6px); } 40% { transform: rotate(10deg) translateX(5px); } 60% { transform: rotate(-7deg) translateX(-3px); } 80% { transform: rotate(4deg); } }
.final-bot.squish .bot-body { animation: squish 420ms var(--ease); }
@keyframes squish { 30% { transform: scale(1.14, 0.84); } 60% { transform: scale(0.95, 1.06); } }
.final-bot.peek .bot-body { animation: peek 1.6s ease-in-out; }
@keyframes peek { 0%, 100% { transform: none; } 25%, 45% { transform: translateX(-8px) rotate(-6deg); } 60%, 85% { transform: translateX(8px) rotate(6deg); } }

/* 对话气泡 */
.bot-say { position: absolute; left: 50%; bottom: calc(100% + 34px); z-index: 2; padding: 8px 14px; border-radius: 16px; background: #fff; color: var(--ink); font-size: 14px; font-weight: 600; line-height: 1.3; white-space: nowrap; box-shadow: 0 1px 0 var(--line), 0 10px 26px oklch(0.3 0.08 280 / 0.14); opacity: 0; translate: -50% 6px; scale: 0.8; transform-origin: 50% 100%; transition: opacity 200ms, translate 320ms var(--ease), scale 320ms var(--ease); pointer-events: none; }
.bot-say::after { content: ""; position: absolute; left: 50%; top: 100%; margin-left: -7px; border: 7px solid transparent; border-top-color: #fff; border-bottom: 0; }
.bot-say.show { opacity: 1; translate: -50% 0; scale: 1; }
/* 头顶被导航栏挡住时，气泡改到右侧 */
.bot-say.side { left: calc(100% + 8px); bottom: 64%; width: max-content; max-width: min(220px, calc(50vw - 86px)); white-space: normal; translate: -6px 0; transform-origin: 0 100%; }
.bot-say.side.show { translate: 0 0; }
.bot-say.side::after { left: -6px; top: auto; bottom: 10px; margin: 0; border: 7px solid transparent; border-right-color: #fff; border-left: 0; }

/* 点击时冒出的爱心和星星 */
.bot-pop { position: absolute; left: 50%; top: 40%; z-index: 1; font-size: var(--fs, 18px); line-height: 1; color: var(--c, var(--violet)); pointer-events: none; animation: pop 1100ms cubic-bezier(0.2, 0.7, 0.3, 1) forwards; }
@keyframes pop {
  0% { opacity: 0; transform: translate(-50%, 0) scale(0.3); }
  15% { opacity: 1; }
  100% { opacity: 0; transform: translate(calc(-50% + var(--dx)), var(--dy)) scale(1) rotate(var(--r)); }
}
.final h2 { margin-top: 40px; font-size: clamp(36px, 5.4vw, 64px); line-height: 1.06; letter-spacing: -0.03em; font-weight: 800; }
.final p { margin: 16px auto 0; max-width: 28em; color: var(--ink-2); font-size: 18px; }
.final .cta-row { justify-content: center; }
.req { margin-top: 18px; font-size: 13px; color: var(--ink-3); }

footer { border-top: 1px solid var(--line); padding: 28px 0 calc(28px + env(safe-area-inset-bottom)); font-size: 13px; color: var(--ink-3); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
footer a { text-decoration: none; } footer a:hover { color: var(--ink); }
footer .foot-legal { margin-top: 10px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 4px 20px; }
.foot-links a { color: var(--ink-2); }

/* 对比表 */
.compare { margin: 40px 0 0; }
.compare-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-l); background: var(--paper); }
.compare table { width: 100%; min-width: 560px; border-collapse: collapse; font-size: 16px; }
.compare caption { text-align: left; padding: 18px 22px 6px; font-weight: 700; font-size: 15px; color: var(--ink-2); }
.compare th, .compare td { text-align: left; padding: 14px 22px; border-top: 1px solid var(--line); vertical-align: top; }
.compare thead th { font: 500 12px var(--mono); letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-3); border-top: 0; }
.compare tbody th { font-weight: 600; }
.compare td { color: var(--ink-2); }
.compare td:last-child { color: var(--violet-deep); font-weight: 600; }
.compare figcaption { margin-top: 12px; font-size: 14px; color: var(--ink-3); }
.compare figcaption a, .faq .ans a { color: var(--violet-deep); }

/* 关于、隐私、条款 */
.doc { max-width: 760px; padding: 48px 0 96px; }
.doc .crumbs { display: flex; flex-wrap: wrap; gap: 8px; font-size: 14px; color: var(--ink-3); }
.doc .crumbs a { text-decoration: none; color: var(--ink-2); }
.doc h1 { margin-top: 20px; font-size: clamp(34px, 5vw, 52px); line-height: 1.1; letter-spacing: -0.025em; font-weight: 800; }
.doc .doc-meta { margin-top: 12px; font-size: 14px; color: var(--ink-3); }
.doc .lead { margin-top: 28px; font-size: 20px; color: var(--ink); }
.doc h2 { margin-top: 44px; font-size: 24px; letter-spacing: -0.015em; font-weight: 800; }
.doc h3 { margin-top: 28px; font-size: 19px; font-weight: 700; }
.doc p, .doc ul, .doc ol { margin-top: 14px; color: var(--ink-2); }
.doc ul, .doc ol { padding-left: 1.2em; }
.doc li + li { margin-top: 8px; }
.doc a { color: var(--violet-deep); }
.doc .doc-back { margin-top: 56px; }

/* 移动端底部常驻下载 */
.dock { display: none; }

/* 滚动显现 */
.reveal { opacity: 0; transform: translateY(14px); filter: blur(4px); transition: opacity 700ms var(--ease), transform 700ms var(--ease), filter 700ms var(--ease); transition-delay: var(--d, 0ms); }
.reveal.in { opacity: 1; transform: none; filter: none; }
/* 首屏不依赖 JS：纯 CSS 入场 */
.hero .reveal { opacity: 1; transform: none; filter: none; transition: none; animation: rise 700ms var(--ease) var(--d, 0ms) both; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); filter: blur(4px); } }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero { padding-top: 48px; }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .feat { grid-template-columns: 1fr; gap: 18px; }
  .feat-no { padding-top: 0; }
  .honest { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .window { grid-template-columns: 1fr; min-height: 0; }
  .win-side { display: none; }
  .win-main { padding: 14px; }
  .win-top { flex-wrap: wrap; }
  .win-search { flex-basis: 100%; }
  .regions { flex: 1; justify-content: space-between; }
  .regions button { flex: 1; min-width: 0; }
  .app { grid-template-columns: 36px 1fr auto; }
  .app .ver { display: none; }
  .icon { width: 36px; height: 36px; }
  .sticker { right: 8px; bottom: -20px; font-size: 13px; }
  .versus { grid-template-columns: 1fr; }
  .vs-col { padding: 24px; }
  .how { grid-template-columns: 1fr; }
  .how li, .how li + li { padding: 22px 0 24px; border-left: 0; }
  .block { padding-top: 88px; }
  .honest { margin-top: 88px; border-radius: 24px; }
  .final { margin-top: 96px; padding-bottom: 120px; }
  .cta-row .btn-primary { flex: 1 1 100%; justify-content: center; }
  .cta-row .btn-ghost { flex: 1 1 100%; justify-content: center; }
  .dock {
    display: flex; position: fixed; z-index: 60; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom));
    transform: translateY(140%); transition: transform 360ms var(--ease);
  }
  .dock.show { transform: none; }
  .dock .btn { flex: 1; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: 1ms !important; }
  .reveal { opacity: 1; transform: none; filter: none; }
}

/* 语言提示条 */
.lang-hint {
  position: fixed; z-index: 55; top: 76px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 12px; max-width: calc(100% - 24px);
  padding: 8px 8px 8px 16px; border-radius: var(--r-pill);
  background: var(--night); color: oklch(0.95 0.01 282); font-size: 14px;
  box-shadow: 0 12px 30px -12px oklch(0.24 0.06 282 / 0.5);
}
.lang-hint[hidden] { display: none; }
.lang-hint span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lang-hint a { color: var(--eye); font-weight: 700; text-decoration: none; white-space: nowrap; }
.lang-hint button { flex: none; width: 32px; height: 32px; border: 0; border-radius: 50%; background: oklch(1 0 0 / 0.08); color: inherit; font-size: 18px; cursor: pointer; }

.doc-page .lang { margin-left: auto; }