/* Duck Do 官网样式：无框架、无外部字体 / CDN。亮色为默认，跟随系统切换暗色。 */

:root {
  --orange: #f97316;
  --orange-strong: #ea580c;
  --orange-soft: #fff1e6;
  --yellow: #f2b73c;
  --bg: #fffcf8;
  --bg-alt: #fff6ec;
  --surface: #ffffff;
  --ink: #1c1917;
  --ink-2: #44403c;
  --muted: #78716c;
  --line: #ede4da;
  --line-strong: #dccfc1;
  --ok: #16a34a;
  --warn: #d97706;
  --shadow: 0 1px 2px rgba(28, 25, 23, 0.05), 0 12px 32px -12px rgba(28, 25, 23, 0.16);
  --shadow-lg: 0 2px 6px rgba(28, 25, 23, 0.06), 0 40px 80px -24px rgba(124, 45, 18, 0.28);
  --radius: 16px;
  --radius-sm: 10px;
  --wrap: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans SC", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --orange: #fb8a3c;
    --orange-strong: #fdba74;
    --orange-soft: #2a1a0f;
    --bg: #12100e;
    --bg-alt: #181512;
    --surface: #1d1916;
    --ink: #f5f0eb;
    --ink-2: #d6cfc7;
    --muted: #a8a29e;
    --line: #2e2823;
    --line-strong: #3d352e;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 32px -12px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 2px 6px rgba(0, 0, 0, 0.4), 0 40px 80px -24px rgba(0, 0, 0, 0.7);
    color-scheme: dark;
  }
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--orange-strong); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
@media (prefers-color-scheme: light) { a { color: #c2410c; } }
code { font-family: var(--mono); font-size: 0.9em; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.2; letter-spacing: -0.02em; margin: 0; }
p { margin: 0 0 1em; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.ic { width: 1em; height: 1em; flex: none; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; z-index: 100; background: var(--surface); padding: 8px 12px; border-radius: 8px; }

:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; border-radius: 4px; }

/* ---------------------------------------------------------------- 按钮 */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; padding: 0 22px; border-radius: 999px;
  font-weight: 600; font-size: 16px; line-height: 1; white-space: nowrap;
  border: 1px solid transparent; transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--orange); color: #fff !important; box-shadow: 0 6px 18px -6px rgba(249, 115, 22, 0.6); }
.btn-primary:hover { background: #ea6a0c; transform: translateY(-1px); }
.btn-ghost { background: var(--surface); color: var(--ink) !important; border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--ink-2); }
.btn-sm { height: 38px; padding: 0 16px; font-size: 14px; }
.btn.is-disabled { cursor: default; color: var(--muted) !important; }
.btn .ic { width: 18px; height: 18px; }

/* ---------------------------------------------------------------- 头部 */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.6) blur(14px); -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink) !important; font-weight: 700; font-size: 18px; letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.brand img { border-radius: 8px; }
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a:not(.btn) { color: var(--ink-2); padding: 8px 12px; border-radius: 8px; font-size: 15px; font-weight: 500; }
.site-nav a:not(.btn):hover { color: var(--ink); background: var(--bg-alt); text-decoration: none; }
.site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav .lang { color: var(--muted) !important; }
.site-nav .btn { margin-left: 8px; }
.nav-toggle, .nav-toggle-label { display: none; }

@media (max-width: 820px) {
  .nav-toggle-label { display: flex; width: 40px; height: 40px; align-items: center; justify-content: center; cursor: pointer; border-radius: 8px; }
  .nav-toggle-label span, .nav-toggle-label span::before, .nav-toggle-label span::after {
    display: block; width: 20px; height: 2px; background: var(--ink); border-radius: 2px; position: relative; transition: transform 0.2s;
  }
  .nav-toggle-label span::before, .nav-toggle-label span::after { content: ""; position: absolute; left: 0; }
  .nav-toggle-label span::before { top: -6px; }
  .nav-toggle-label span::after { top: 6px; }
  .nav-toggle { display: block; position: absolute; opacity: 0; width: 40px; height: 40px; right: 24px; margin: 0; cursor: pointer; z-index: 2; }
  .site-nav {
    display: none; position: absolute; left: 0; right: 0; top: 64px; flex-direction: column; align-items: stretch;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: 8px 16px 20px; gap: 2px; box-shadow: var(--shadow);
  }
  .site-nav a:not(.btn) { padding: 12px; font-size: 16px; }
  .site-nav .btn { margin: 10px 0 0; }
  .nav-toggle:checked ~ .site-nav { display: flex; }
  .nav-toggle:checked + .nav-toggle-label span { background: transparent; }
  .nav-toggle:checked + .nav-toggle-label span::before { transform: translateY(6px) rotate(45deg); }
  .nav-toggle:checked + .nav-toggle-label span::after { transform: translateY(-6px) rotate(-45deg); }
}

/* ---------------------------------------------------------------- 通用版块 */

section { padding: 88px 0; }
section#why { padding-top: 56px; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--orange-strong); margin-bottom: 14px; }
@media (prefers-color-scheme: light) { .eyebrow { color: #c2410c; } }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: clamp(30px, 4vw, 42px); margin-bottom: 14px; }
.section-head p { font-size: 18px; color: var(--ink-2); margin: 0; }

/* ---------------------------------------------------------------- 首页：英雄区 */

.hero { padding: 64px 0 88px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -20% -10% auto auto; width: 780px; height: 780px; border-radius: 50%;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--orange) 20%, transparent), transparent 72%);
  pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.02fr 1fr; gap: 56px; align-items: center; position: relative; }
.hero-copy { max-width: 820px; }
.hero .shot { margin-top: 56px; }
.hero h1 { font-size: clamp(42px, 6.2vw, 72px); letter-spacing: -0.035em; margin-bottom: 20px; }
.hero h1 .accent { color: var(--orange); }
.hero .lede { font-size: clamp(18px, 2vw, 21px); color: var(--ink-2); max-width: 560px; margin-bottom: 32px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.hero-facts { display: flex; flex-wrap: wrap; gap: 8px 20px; padding: 0; margin: 0; list-style: none; color: var(--muted); font-size: 14px; }
.hero-facts li { display: inline-flex; align-items: center; gap: 6px; }
.hero-facts .ic { color: var(--ok); width: 16px; height: 16px; }

/* 界面示意图（纯 CSS，非截图） */
.mock { position: relative; }
.mock-window {
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: 14px; box-shadow: var(--shadow-lg);
  overflow: hidden; font-size: 13px; line-height: 1.45;
}
.mock-bar { display: flex; align-items: center; gap: 7px; height: 36px; padding: 0 14px; border-bottom: 1px solid var(--line); background: var(--bg-alt); }
.mock-bar i { width: 11px; height: 11px; border-radius: 50%; background: var(--line-strong); }
.mock-bar i:nth-child(1) { background: #ff5f57; } .mock-bar i:nth-child(2) { background: #febc2e; } .mock-bar i:nth-child(3) { background: #28c840; }
.mock-bar b { margin-left: 10px; font-weight: 600; color: var(--muted); font-size: 12px; }
.mock-body { display: grid; grid-template-columns: 188px 1fr; min-height: 340px; }
.mock-side { border-right: 1px solid var(--line); padding: 12px 8px; background: color-mix(in srgb, var(--bg-alt) 55%, var(--surface)); }
.mock-side small { display: block; padding: 4px 8px 8px; color: var(--muted); font-size: 11px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
.mock-sess { display: flex; gap: 8px; align-items: flex-start; padding: 8px; border-radius: 8px; color: var(--ink-2); }
.mock-sess.on { background: var(--surface); box-shadow: 0 0 0 1px var(--line); color: var(--ink); }
.mock-sess span { display: block; font-size: 11px; color: var(--muted); }
.dot { flex: none; width: 8px; height: 8px; border-radius: 50%; margin-top: 5px; background: var(--muted); }
.dot.run { background: var(--orange); box-shadow: 0 0 0 3px color-mix(in srgb, var(--orange) 22%, transparent); }
.dot.wait { background: var(--warn); }
.dot.done { background: var(--ok); }
.mock-main { padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.msg-user { align-self: flex-end; max-width: 82%; background: var(--orange); color: #fff; padding: 9px 12px; border-radius: 12px 12px 4px 12px; }
.msg-agent { max-width: 92%; color: var(--ink-2); }
.tool { display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; font-family: var(--mono); font-size: 11.5px; color: var(--ink-2); background: var(--bg-alt); }
.tool .ic { color: var(--ok); width: 14px; height: 14px; }
.approve { border: 1px solid color-mix(in srgb, var(--warn) 45%, var(--line)); background: color-mix(in srgb, var(--warn) 8%, var(--surface)); border-radius: 10px; padding: 10px 12px; }
.approve p { margin: 0 0 8px; color: var(--ink); font-weight: 600; }
.approve div { display: flex; gap: 6px; }
.approve span { font-size: 12px; padding: 4px 12px; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink-2); }
.approve span:first-child { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.mock-window { margin-right: 84px; }
.mock-phone {
  position: absolute; right: 0; bottom: -64px; width: 168px; padding: 10px; border-radius: 28px;
  background: #1c1917; box-shadow: var(--shadow-lg); border: 1px solid #000;
}
.mock-phone .screen { background: var(--bg); border-radius: 20px; padding: 26px 10px 14px; min-height: 230px; font-size: 11.5px; }
.mock-phone .notch { position: absolute; top: 16px; left: 50%; transform: translateX(-50%); width: 46px; height: 12px; border-radius: 10px; background: #1c1917; }
.mock-phone .card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 9px 10px; margin-bottom: 8px; box-shadow: var(--shadow); }
.mock-phone .card b { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--muted); font-weight: 600; margin-bottom: 4px; }
.mock-phone .card b img { width: 16px; height: 16px; border-radius: 4px; }
.mock-caption { margin-top: 84px; text-align: center; font-size: 12px; color: var(--muted); }

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .mock { max-width: 620px; }
}
@media (max-width: 560px) {
  .hero { padding-top: 48px; }
  .mock-body { grid-template-columns: 1fr; }
  .mock-side { display: none; }
  .mock-window { margin-right: 0; }
  .mock-phone { display: none; }
  .mock-caption { margin-top: 12px; }
}


/* ---------------------------------------------------------------- 真实截图（助理总览） */

.shot { margin: 0; }
.shot-window {
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: 14px; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.shot-bar { display: flex; align-items: center; gap: 7px; height: 34px; padding: 0 14px; border-bottom: 1px solid var(--line); background: var(--bg-alt); }
.shot-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); }
.shot-bar i:nth-child(1) { background: #ff5f57; } .shot-bar i:nth-child(2) { background: #febc2e; } .shot-bar i:nth-child(3) { background: #28c840; }
.shot-bar b { margin-left: 10px; font-weight: 600; color: var(--muted); font-size: 12px; }
.shot img { width: 100%; height: auto; display: block; }
.shot figcaption { margin-top: 12px; font-size: 13px; color: var(--muted); line-height: 1.55; }

/* chatbot 对比 */
.contrast { display: grid; gap: 14px; }
.contrast-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contrast-row > div { border-radius: var(--radius); padding: 22px 24px; border: 1px solid var(--line); }
.contrast .was { background: color-mix(in srgb, var(--bg-alt) 60%, var(--surface)); color: var(--muted); }
.contrast .was p { color: var(--muted); }
.contrast .now { background: var(--surface); border-color: color-mix(in srgb, var(--orange) 35%, var(--line)); box-shadow: var(--shadow); }
.contrast p { margin: 8px 0 0; font-size: 15.5px; }
.contrast .now strong { color: var(--ink); }
.tag { display: inline-block; font-size: 11.5px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; padding: 3px 9px; border-radius: 999px; }
.tag-was { background: var(--line); color: var(--muted); }
.tag-now { background: var(--orange-soft); color: var(--orange-strong); }
@media (prefers-color-scheme: light) { .tag-now { color: #c2410c; } }
@media (max-width: 760px) { .contrast-row { grid-template-columns: 1fr; } }

/* ---------------------------------------------------------------- 功能卡片 */

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.feature .fi {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 18px;
  background: var(--orange-soft); color: var(--orange);
}
.feature .fi svg { width: 22px; height: 22px; }
.feature h3 { font-size: 19px; margin-bottom: 8px; letter-spacing: -0.01em; }
.feature p { margin: 0; color: var(--ink-2); font-size: 15.5px; }
@media (max-width: 900px) { .features { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .features { grid-template-columns: 1fr; } }

/* 分栏讲解 */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split + .split { margin-top: 88px; }
.split h3 { font-size: clamp(24px, 3vw, 32px); margin-bottom: 14px; }
.split p { color: var(--ink-2); font-size: 17px; }
.checks { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 10px; }
.checks li { display: flex; gap: 10px; align-items: flex-start; color: var(--ink-2); }
.checks .ic { color: var(--orange); margin-top: 5px; width: 18px; height: 18px; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; gap: 32px; } .split.rev > :first-child { order: 2; } }

.devices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.device { border: 1px solid var(--line); border-radius: 12px; padding: 16px; text-align: center; background: var(--bg); }
.device strong { display: block; font-size: 15px; }
.device span { font-size: 12.5px; color: var(--muted); }
.device svg { width: 30px; height: 30px; margin: 0 auto 8px; color: var(--ink-2); }

/* 步骤 */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: step; padding: 0; margin: 0; list-style: none; }
.steps li { position: relative; padding: 28px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); }
.steps li::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  display: block; font-family: var(--mono); font-size: 13px; font-weight: 700; color: var(--orange); margin-bottom: 12px;
}
.steps h3 { font-size: 18px; margin-bottom: 6px; }
.steps p { margin: 0; color: var(--ink-2); font-size: 15px; }
@media (max-width: 800px) { .steps { grid-template-columns: 1fr; } }

/* FAQ */
.faq { max-width: 820px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary {
  list-style: none; cursor: pointer; padding: 18px 36px 18px 0; font-weight: 600; font-size: 17px; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 6px; top: 50%; width: 10px; height: 10px; margin-top: -7px;
  border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: rotate(45deg); transition: transform 0.2s;
}
.faq details[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.faq details p { color: var(--ink-2); padding-right: 36px; }

/* 号召区 */
.cta-band { text-align: center; padding: 88px 0; }
.cta-band .duck { width: 132px; margin: 0 auto 20px; }
.cta-band h2 { font-size: clamp(30px, 4vw, 44px); margin-bottom: 12px; }
.cta-band p { color: var(--ink-2); font-size: 18px; margin-bottom: 28px; }
.cta-band .hero-cta { justify-content: center; margin: 0; }

/* ---------------------------------------------------------------- 页面头（定价 / 下载 / 支持 / 法务） */

.page-head { padding: 72px 0 40px; }
.page-head h1 { font-size: clamp(36px, 5vw, 56px); margin-bottom: 14px; letter-spacing: -0.03em; }
.page-head p { font-size: 19px; color: var(--ink-2); max-width: 680px; margin: 0; }
.page-head.center { text-align: center; }
.page-head.center p { margin: 0 auto; }
.page-body { padding: 24px 0 96px; }

/* 定价 */
.packs { list-style: none; padding: 0; margin: 0 0 20px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.pack { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 18px; text-align: center; display: flex; flex-direction: column; gap: 4px; }
.pack-price { font-family: var(--font-display); font-size: 36px; font-weight: 700; letter-spacing: -0.03em; }
.pack-credits { font-weight: 600; color: var(--orange-strong); }
@media (prefers-color-scheme: light) { .pack-credits { color: #c2410c; } }
.pack-note { font-size: 12.5px; color: var(--muted); }
@media (max-width: 900px) { .packs { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 520px) { .packs { grid-template-columns: 1fr 1fr; } }

.pack { position: relative; }
.pack.is-highlight { border-color: var(--orange); box-shadow: 0 0 0 1px var(--orange), var(--shadow); }
.pack-badge {
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  background: var(--orange); color: #fff; font-size: 11.5px; font-weight: 700; letter-spacing: 0.02em;
  padding: 2px 12px; border-radius: 999px; white-space: nowrap;
}

.tiers { list-style: none; padding: 0; margin: 0 0 12px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tier { display: flex; flex-direction: column; gap: 4px; padding: 24px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); }
.tier-kicker { font-size: 13px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; color: var(--orange-strong); }
@media (prefers-color-scheme: light) { .tier-kicker { color: #c2410c; } }
.tier-price { font-family: var(--font-display); font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }
.tier-credits { font-size: 14px; font-weight: 600; color: var(--ink-2); }
.tier-desc { font-size: 14.5px; color: var(--ink-2); margin-top: 4px; }
.tier-est { font-size: 13px; color: var(--muted); margin-top: auto; padding-top: 10px; border-top: 1px dashed var(--line); }
@media (max-width: 900px) { .tiers { grid-template-columns: 1fr; } }

.price-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 0 0 56px; }
.price-summary div { padding: 22px; border-radius: var(--radius); background: var(--bg-alt); border: 1px solid var(--line); }
.price-summary strong { display: block; font-size: 17px; margin-bottom: 4px; }
.price-summary span { color: var(--ink-2); font-size: 15px; }
@media (max-width: 800px) { .price-summary { grid-template-columns: 1fr; } }

.block { margin-top: 64px; }
.block > h2 { font-size: 28px; margin-bottom: 8px; }
.block > p.sub { color: var(--ink-2); margin-bottom: 20px; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table.rates { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 560px; }
table.rates caption { caption-side: top; text-align: left; padding: 14px 18px 0; color: var(--muted); font-size: 13px; }
table.rates th, table.rates td { padding: 12px 18px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
table.rates thead th { font-size: 13px; color: var(--muted); font-weight: 600; background: var(--surface); }
table.rates tbody tr:last-child > * { border-bottom: 0; }
table.rates tbody th { font-weight: 500; }
table.rates .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.rates .usd { display: block; font-size: 12px; color: var(--muted); }
table.rates-services { min-width: 0; }
.meta-line { font-size: 13px; color: var(--muted); margin-top: 12px; }
.notes { margin: 0; padding-left: 20px; color: var(--ink-2); }
.notes li { margin-bottom: 8px; }

/* 下载 */
.platforms { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.platform { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; display: flex; flex-direction: column; }
.platform svg.pi { width: 40px; height: 40px; color: var(--ink); margin-bottom: 18px; }
.platform h2 { font-size: 22px; margin-bottom: 6px; }
.platform .ver { font-family: var(--mono); font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.platform ul { padding-left: 18px; color: var(--ink-2); font-size: 15px; margin: 0 0 22px; flex: 1; }
.platform .actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
@media (max-width: 900px) { .platforms { grid-template-columns: 1fr; } }

/* 支持 */
.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.contact-cards > div { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.contact-cards h2 { font-size: 19px; margin-bottom: 8px; }
.contact-cards p { color: var(--ink-2); font-size: 15px; margin-bottom: 10px; }
@media (max-width: 900px) { .contact-cards { grid-template-columns: 1fr; } }

/* ---------------------------------------------------------------- 法务正文 */

.legal { display: grid; grid-template-columns: 240px 1fr; gap: 56px; align-items: start; }
.legal-toc { position: sticky; top: 96px; font-size: 14px; }
.legal-toc strong { display: block; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 10px; }
.legal-toc ol { list-style: none; padding: 0; margin: 0; display: grid; gap: 2px; }
.legal-toc a { display: block; color: var(--ink-2); padding: 5px 10px; border-radius: 6px; border-left: 2px solid transparent; }
.legal-toc a:hover { background: var(--bg-alt); text-decoration: none; color: var(--ink); }
.prose { max-width: 740px; color: var(--ink-2); }
.prose h2 { font-size: 22px; color: var(--ink); margin: 44px 0 12px; scroll-margin-top: 90px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 17px; color: var(--ink); margin: 24px 0 8px; }
.prose ul, .prose ol { padding-left: 22px; margin: 0 0 1em; }
.prose li { margin-bottom: 6px; }
.prose strong { color: var(--ink); }
.prose table { width: 100%; border-collapse: collapse; font-size: 14.5px; margin: 8px 0 20px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
.prose th { background: var(--bg-alt); color: var(--ink); font-weight: 600; }
.legal-meta { display: flex; flex-wrap: wrap; gap: 6px 24px; font-size: 14px; color: var(--muted); margin-top: 18px; }
.callout { border: 1px solid var(--line); background: var(--bg-alt); border-radius: var(--radius-sm); padding: 16px 18px; margin: 0 0 28px; color: var(--ink-2); }
.callout strong { color: var(--ink); }
@media (max-width: 900px) {
  .legal { grid-template-columns: 1fr; gap: 24px; }
  .legal-toc { position: static; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px; }
}

/* ---------------------------------------------------------------- 待确认标记（上线前必须清零） */

mark.tbc {
  background: #fde68a; color: #78350f; border: 1px dashed #d97706; border-radius: 4px; padding: 0 4px;
  font-size: 0.92em; font-weight: 600; white-space: normal;
}

/* ---------------------------------------------------------------- 页脚 */

.site-footer { border-top: 1px solid var(--line); background: var(--bg-alt); padding: 56px 0 32px; font-size: 14.5px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 32px; }
.footer-brand p { color: var(--muted); margin-top: 10px; }
.site-footer h2 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin-bottom: 12px; font-weight: 600; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.site-footer ul a { color: var(--ink-2); }
.footer-legal { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-legal p { margin: 0 0 6px; }
.footer-legal a { color: var(--ink-2); text-decoration: underline; text-underline-offset: 2px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }