/* 智剪课官网样式。

   版式与气质参照 Claude Code 官网：暖调的纸白 / 炭黑两套底色（跟随系统），宋体大标题配无衬线正文，
   大留白、细线、圆角卡片，少框、不做彩色渐变。全站唯一的彩色是 brand/ 里的朱红（和软件录制键同族）。
   产品图不用截图，是 templates/partials/art/ 里照软件界面重画的简化示意，颜色取自这里的「舞台」变量。
   纯本地资源：标题字体是思源宋体 Medium 的子集（tools/make_site_font.py 生成），正文走系统字体栈。 */

@font-face {
  font-family: "TeachCut Serif";
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  src: url("../fonts/tc-serif-core.9d56159f8c80.woff2") format("woff2");
}
/* 兜底：标题里出现了 core 之外的常用字（比如后台改了方案名）时，浏览器才会去取这一份 */
@font-face {
  font-family: "TeachCut Serif Rest";
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  src: url("../fonts/tc-serif-rest.66b3e32b9cf2.woff2") format("woff2");
}

:root {
  color-scheme: light dark;

  --ground: #faf9f5;
  --ground-2: #f0eee6;
  --surface: #ffffff;
  --surface-2: #f5f4ed;
  --line: #e8e6dc;
  --line-2: #d1cfc5;
  --ink: #141413;
  --ink-2: #5e5d59;
  --ink-3: #87867f;
  --ink-4: #b0aea5;

  --primary: #141413;
  --primary-hover: #30302e;
  --on-primary: #faf9f5;
  --quiet: #e8e6dc;
  --quiet-hover: #dedcd1;

  --accent: #de4640;
  --accent-2: #c23b36;
  --accent-soft: #f8e6e1;

  --good: #2f7a57;
  --good-soft: #e3efe6;
  --warn: #8a5f14;
  --warn-soft: #f5ecd8;
  --bad: #bf4d43;
  --bad-soft: #f8e6e1;

  /* 舞台：产品示意图与深色卡片，浅色与深色主题下都是深的 */
  --stage: #141413;
  --stage-2: #1f1e1d;
  --stage-3: #2a2a28;
  --stage-line: #30302e;
  --stage-ink: #faf9f5;
  --stage-ink-2: #c2c0b6;
  --stage-ink-3: #87867f;
  --stage-ink-4: #5e5d59;

  --r-sm: 6px;
  --r: 8px;
  --r-lg: 16px;
  --r-xl: 24px;
  --shadow-1: 0 1px 2px rgba(20, 20, 19, .06);
  --shadow-2: 0 1px 2px rgba(20, 20, 19, .04), 0 16px 40px -20px rgba(20, 20, 19, .16);
  --shadow-window: 0 0 0 1px rgba(20, 20, 19, .04), 0 8px 24px rgba(20, 20, 19, .05), 0 32px 64px -32px rgba(20, 20, 19, .28);
  --ring: 0 0 0 3px rgba(20, 20, 19, .12);

  --maxw: 1200px;
  --maxw-app: 1320px;
  --gutter: 40px;

  --font: "Segoe UI Variable Text", "Segoe UI", -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC",
          "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  --serif: "TeachCut Serif", "TeachCut Serif Rest", "Source Han Serif SC", "Source Han Serif CN", "Noto Serif CJK SC", "Noto Serif SC",
          "Songti SC", "STSong", Georgia, serif;
  --mono: "Cascadia Mono", "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground: #141413;
    --ground-2: #1a1918;
    --surface: #1f1e1d;
    --surface-2: #262624;
    --line: #30302e;
    --line-2: #3d3d3a;
    --ink: #faf9f5;
    --ink-2: #c2c0b6;
    --ink-3: #9c9a92;
    --ink-4: #5e5d59;

    --primary: #faf9f5;
    --primary-hover: #ffffff;
    --on-primary: #141413;
    --quiet: #30302e;
    --quiet-hover: #3d3d3a;

    --accent: #e5564f;
    --accent-2: #f07a74;
    --accent-soft: rgba(229, 86, 79, .14);

    --good: #6fbf98;
    --good-soft: rgba(111, 191, 152, .12);
    --warn: #dcab5c;
    --warn-soft: rgba(220, 171, 92, .12);
    --bad: #ee7a72;
    --bad-soft: rgba(238, 122, 114, .12);

    --stage: #0f0f0e;
    --stage-2: #1a1918;
    --stage-3: #262624;
    --stage-line: #30302e;

    --shadow-1: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow-2: 0 1px 2px rgba(0, 0, 0, .3), 0 16px 40px -20px rgba(0, 0, 0, .6);
    --shadow-window: 0 32px 64px -32px rgba(0, 0, 0, .7);
    --ring: 0 0 0 3px rgba(250, 249, 245, .16);
  }
}

/* ------------------------------------------------------------------ 基础 */

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--ground);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
p a, li a, dd a, .note a, .link {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--line-2);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
p a:hover, li a:hover, dd a:hover, .note a:hover, .link:hover { text-decoration-color: currentColor; }
p a, .note a { white-space: nowrap; }

h1, h2, h3, h4 { margin: 0 0 .5em; font-weight: 600; line-height: 1.3; color: var(--ink); }
h1, h2 { font-family: var(--serif); font-weight: 500; }
h1 { font-size: 48px; line-height: 1.2; }
h2 { font-size: 40px; line-height: 1.25; }
h3 { font-size: 20px; line-height: 1.4; }
h4 { font-size: 16px; line-height: 1.5; }

p { margin: 0 0 1em; }
p, li, dd, .answer { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; }
ul, ol { margin: 0 0 1em; padding-left: 1.25em; }
li + li { margin-top: .3em; }
strong { font-weight: 600; }
code, kbd, pre, .mono { font-family: var(--mono); font-size: .88em; }
code { padding: .1em .4em; border-radius: 5px; background: var(--surface-2); border: 1px solid var(--line); }
hr { border: 0; border-top: 1px solid var(--line); margin: 28px 0; }
img, svg { max-width: 100%; }

.wrap { width: 100%; max-width: calc(var(--maxw) + var(--gutter) * 2); margin: 0 auto; padding: 0 var(--gutter); }
.wrap.app-wrap { max-width: calc(var(--maxw-app) + var(--gutter) * 2); }
.wrap.narrow { max-width: calc(760px + var(--gutter) * 2); }

.muted { color: var(--ink-2); }
.dim { color: var(--ink-3); }
.small { font-size: 14px; }
.tiny { font-size: 12.5px; }
.center { text-align: center; }
.right { text-align: right; }
.nowrap { white-space: nowrap; }
.num { font-variant-numeric: tabular-nums; }
.stack > * + * { margin-top: 20px; }
.hide { display: none !important; }
.m0 { margin: 0 !important; }
.mt-s { margin-top: 12px !important; }
.mt { margin-top: 24px !important; }
.mt-l { margin-top: 48px !important; }

/* ------------------------------------------------------------------ 顶栏 */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--ground) 86%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner { display: flex; align-items: center; gap: 32px; height: 68px; }
.brand { display: flex; align-items: center; flex: none; }
.brand img { display: block; height: 30px; width: auto; }

.nav { display: flex; align-items: center; gap: 32px; margin-left: auto; }
.nav a { font-size: 15px; color: var(--ink-2); transition: color .15s ease; }
.nav a:hover, .nav a.on { color: var(--ink); }

.topbar-right { display: flex; align-items: center; gap: 8px; }
.topbar-right .text-link { font-size: 15px; color: var(--ink-2); padding: 0 12px; background: none; border: 0; cursor: pointer; font-family: inherit; }
.topbar-right .text-link:hover { color: var(--ink); }
.topbar-right form { margin: 0; }
.me { display: flex; align-items: center; gap: 10px; max-width: 220px; font-size: 15px; color: var(--ink-2); }
.me:hover { color: var(--ink); text-decoration: none; }
.me .avatar { display: grid; place-items: center; flex: none; width: 32px; height: 32px; border-radius: 50%; background: var(--quiet); color: var(--ink); font-size: 14px; font-weight: 500; }
.me .name { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }

.messages { padding-top: 20px; }
.messages .note { margin: 0; }
.messages .note + .note { margin-top: 10px; }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 18px;
  border: 0;
  border-radius: var(--r);
  background: var(--primary);
  color: var(--on-primary);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .15s ease, box-shadow .15s ease, color .15s ease;
}
.btn:hover { background: var(--primary-hover); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: none; box-shadow: var(--ring); }
.btn.quiet { background: var(--quiet); color: var(--ink); }
.btn.quiet:hover { background: var(--quiet-hover); }
.btn.ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1px var(--line-2); }
.btn.ghost:hover { background: var(--surface-2); }
.btn.accent { background: var(--accent); color: #fff; }
.btn.accent:hover { background: var(--accent-2); }
.btn.danger { background: var(--bad-soft); color: var(--bad); }
.btn.lg { height: 48px; padding: 0 24px; font-size: 16px; border-radius: 10px; }
.btn.sm { height: 34px; padding: 0 14px; font-size: 14px; }
.btn.block { display: flex; width: 100%; }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .45; cursor: not-allowed; }
.btn-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.btn .arrow { transition: transform .15s ease; }
.btn:hover .arrow { transform: translateX(2px); }

/* ------------------------------------------------------------------ 区块与标题 */

.section { padding: 128px 0; }
.section.tight { padding: 96px 0 128px; }
.section.alt { background: var(--ground-2); }
.section.flush { padding-top: 0; }

.section-head { max-width: 680px; margin-bottom: 64px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h1, .section-head h2 { margin-bottom: 16px; }
.section-head h1:last-child, .section-head h2:last-child { margin-bottom: 0; }
.section-head p { font-size: 19px; color: var(--ink-3); margin: 0; }

/* 区块标题上方的小线描图标 */
.glyph { display: block; width: 44px; height: 44px; margin: 0 auto 24px; color: var(--ink); }
.glyph svg { display: block; width: 100%; height: 100%; }

.eyebrow { margin-bottom: 14px; font-size: 14px; color: var(--ink-3); }

.lede { font-size: 20px; line-height: 1.7; color: var(--ink-3); }

.grid { display: grid; gap: 24px; }
.grid.c2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.c3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.c4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.golden { grid-template-columns: minmax(0, 61.8fr) minmax(0, 38.2fr); }
.grid.golden-rev { grid-template-columns: minmax(0, 38.2fr) minmax(0, 61.8fr); }
.grid.top { align-items: start; }

/* ------------------------------------------------------------------ 首屏 */

.hero { padding: 96px 0 128px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 8fr); gap: 64px; align-items: center; }
.hero h1 { font-size: 64px; line-height: 1.18; margin-bottom: 24px; }
.hero .lede { margin: 0 0 40px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero .art { box-shadow: var(--shadow-window); }

/* ------------------------------------------------------------------ 产品示意图（照软件界面重画的简化图，不是截图）
   整张图按容器宽度等比缩放：.art-in 的字号跟着容器宽度走，里面的尺寸全部用 em。 */

.art {
  container-type: inline-size;
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--stage-line);
  background: var(--stage);
  color: var(--stage-ink-2);
  font-family: var(--font);
  line-height: 1.5;
  user-select: none;
  -webkit-user-select: none;
}
.art-in { font-size: 1.7cqw; }
.art svg { display: block; width: 100%; height: auto; max-width: none; }
.art pre { margin: 0; font-family: var(--mono); font-size: 1em; line-height: 1.9; color: var(--stage-ink-3); white-space: pre; }
.art pre b { font-weight: 400; color: var(--stage-ink); }
.art pre i { font-style: normal; color: var(--stage-ink-4); }
.art pre u { text-decoration: none; color: var(--accent); }

/* 分段切换 */
.a-seg { display: inline-flex; padding: .16em; border-radius: .5em; background: var(--stage-2); }
.a-seg i { padding: .22em .9em; border-radius: .4em; font-style: normal; color: var(--stage-ink-3); }
.a-seg i.on { background: var(--stage-3); color: var(--stage-ink); }

/* 时间线（单独用在功能页，也嵌在编辑器图里） */
.a-tl .ruler { stroke: var(--stage-line); }
.a-tl .track { fill: var(--stage-2); }
.a-tl .wave { fill: var(--stage-ink-4); }
.a-tl .wave.kept { fill: var(--stage-ink-3); }
.a-tl .cut { fill: var(--accent); opacity: .16; }
.a-tl .cut-wave { fill: var(--accent); opacity: .85; }
.a-tl .chip { fill: none; stroke: var(--stage-line); }
.a-tl .chip-line { fill: var(--stage-ink-4); opacity: .6; }
.a-tl .head { fill: var(--stage-ink); }

/* 编辑器 */
.ae-bar { display: flex; align-items: center; gap: 1.2em; height: 3.6em; padding: 0 1.3em; border-bottom: 1px solid var(--stage-line); }
.ae-crumb { color: var(--stage-ink-3); }
.ae-crumb b { font-weight: 500; color: var(--stage-ink); }
.ae-bar .a-seg { margin: 0 auto; }
.ae-export { padding: .32em 1em; border-radius: .5em; background: var(--accent); color: #fff; font-weight: 500; }
.ae-main { display: grid; grid-template-columns: 36% minmax(0, 1fr); border-bottom: 1px solid var(--stage-line); }
.ae-list { border-right: 1px solid var(--stage-line); }
.ae-item { display: grid; grid-template-columns: 1.9em minmax(0, 1fr) auto; column-gap: .5em; padding: .9em 1.3em; border-bottom: 1px solid var(--stage-line); }
.ae-item:last-child { border-bottom: 0; }
.ae-item .n { color: var(--stage-ink-4); font-variant-numeric: tabular-nums; }
.ae-item .t { color: var(--stage-ink); font-variant-numeric: tabular-nums; }
.ae-item .k { color: var(--stage-ink-3); }
.ae-item p { grid-column: 2 / -1; margin: .15em 0 0; color: var(--stage-ink-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ae-item.on { background: var(--stage-2); box-shadow: inset .2em 0 0 var(--accent); }
.ae-item.on p { color: var(--stage-ink-2); }
.ae-item em { grid-column: 2; justify-self: start; margin-top: .6em; padding: .2em .8em; border-radius: .4em; background: var(--stage-3); color: var(--stage-ink); font-style: normal; }
.ae-view { display: flex; flex-direction: column; min-width: 0; }
.ae-screen { flex: 1; padding: 1.5em 1.8em; }
.ae-transport { display: flex; align-items: center; justify-content: space-between; padding: .8em 1.3em; border-top: 1px solid var(--stage-line); font-variant-numeric: tabular-nums; color: var(--stage-ink-3); }
.ae-play { display: grid; place-items: center; width: 2.5em; height: 2.5em; border-radius: 50%; background: var(--stage-ink); }
.ae-play::before { content: ""; margin-left: .2em; border: solid transparent; border-width: .45em 0 .45em .72em; border-left-color: var(--stage); }
.ae-tl { padding: 1em 1.3em 1.2em; }

/* 功能卡片里的四张小图：同一个画幅 */
.art-card { aspect-ratio: 16 / 10; }
.art-card .art-in { position: relative; height: 100%; padding: 2em; font-size: 2.3cqw; }
.a-screen { position: relative; overflow: hidden; border-radius: .7em; background: var(--stage-2); }

/* 四路同录 */
.as { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 1.6em; height: 100%; }
.as .a-screen { padding: 1.4em 1.5em; }
.as-pip { position: absolute; right: 1.2em; bottom: 1.2em; width: 5em; height: 5em; border-radius: 50%; background: var(--stage-3); box-shadow: 0 0 0 .14em var(--stage-ink-4); }
.as-pip::before { content: ""; position: absolute; left: 50%; top: 24%; width: 30%; height: 30%; border-radius: 50%; background: var(--stage-ink-4); transform: translateX(-50%); }
.as-pip::after { content: ""; position: absolute; left: 50%; bottom: 14%; width: 56%; height: 26%; border-radius: 1.4em 1.4em .5em .5em; background: var(--stage-ink-4); transform: translateX(-50%); }
.as-rows { display: flex; flex-direction: column; }
.as-row { display: flex; align-items: center; gap: .8em; flex: 1; border-bottom: 1px solid var(--stage-line); color: var(--stage-ink); }
.as-row b { flex: none; width: 4.2em; font-weight: 400; }
.as-meter { flex: 1; height: .32em; border-radius: 1em; background: var(--stage-3); overflow: hidden; }
.as-meter::before { content: ""; display: block; width: var(--v, 0%); height: 100%; border-radius: 1em; background: var(--stage-ink-3); }
.a-sw { flex: none; width: 2.1em; height: 1.2em; margin-left: auto; border-radius: 1em; background: var(--stage-ink-3); position: relative; }
.a-sw::before { content: ""; position: absolute; right: .17em; top: .17em; width: .86em; height: .86em; border-radius: 50%; background: var(--stage); }
.as-rec { display: flex; align-items: center; gap: .8em; padding-top: 1.2em; color: var(--stage-ink-3); font-variant-numeric: tabular-nums; }
.as-rec i { width: 2.4em; height: 2.4em; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 .3em color-mix(in srgb, var(--accent) 22%, transparent); }

/* AI 预剪 */
.ap { display: flex; flex-direction: column; height: 100%; }
.ap-text { flex: 1; font-size: 1.24em; line-height: 2.2; color: var(--stage-ink); }
.ap-text p { margin: 0; }
.ap-text s { color: var(--stage-ink-3); text-decoration-color: var(--accent); text-decoration-thickness: .07em; }
.ap-sum { display: flex; justify-content: space-between; padding-top: 1.1em; border-top: 1px solid var(--stage-line); color: var(--stage-ink-3); font-variant-numeric: tabular-nums; }
.ap-sum b { font-weight: 500; color: var(--stage-ink); }

/* 画面强调 */
.af { height: 100%; }
.af .a-screen { height: 100%; padding: 1.8em 2.2em; background: var(--stage-3); }
.af pre { font-size: 1.22em; }
.af-focus { position: relative; z-index: 1; margin: 0 -.7em; padding: .4em .7em; border-radius: .45em; outline: .13em solid var(--stage-ink); box-shadow: 0 0 0 60em rgba(10, 10, 9, .46); }
.af-arrow { position: absolute; z-index: 2; left: 11.6em; top: 7em; width: 9em !important; color: var(--accent); }
.af-blur { color: var(--stage-ink); filter: blur(.26em); }
.af-keys { position: absolute; z-index: 2; right: 1.6em; bottom: 1.5em; display: flex; gap: .4em; }
.af-keys kbd { padding: .25em .7em; border-radius: .45em; background: var(--stage-ink); color: var(--stage); font-family: var(--font); font-size: 1em; font-weight: 500; }

/* AI 字幕 */
.ac { display: flex; flex-direction: column; gap: 1.3em; height: 100%; }
.ac .a-screen { flex: 1; padding: 1.4em 1.7em; }
.ac-cap { position: absolute; left: 50%; bottom: 1.2em; padding: .3em 1em; border-radius: .4em; background: rgba(10, 10, 9, .78); color: #fff; font-size: 1.15em; white-space: nowrap; transform: translateX(-50%); }
.ac-styles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .8em; }
.ac-styles i { display: grid; place-items: center; height: 2.9em; border-radius: .6em; background: var(--stage-2); color: var(--stage-ink); font-style: normal; font-size: 1.05em; }
.ac-styles i.on { box-shadow: inset 0 0 0 .1em var(--stage-ink); }
.ac-styles .s2 { color: #f2d35e; }
.ac-styles .s3 span { padding: .05em .6em; border-radius: .3em; background: var(--stage-ink); color: var(--stage); }
.ac-styles .s4 { font-family: var(--serif); }

/* ------------------------------------------------------------------ 标签切换（价格的月付 / 年付） */

.tabs {
  display: flex;
  width: max-content;
  gap: 4px;
  margin: 0 auto 48px;
  padding: 4px;
  border-radius: 10px;
  background: var(--quiet);
}
.tab {
  height: 36px;
  padding: 0 18px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--ink-2);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color .15s ease, color .15s ease;
}
.tab:hover { color: var(--ink); }
.tab.on { background: var(--surface); color: var(--ink); box-shadow: var(--shadow-1); }
.tab:focus-visible { outline: none; box-shadow: var(--ring); }

.ticks { list-style: none; margin: 24px 0 0; padding: 0; }
.ticks li { position: relative; margin: 0; padding: 7px 0 7px 26px; font-size: 15px; line-height: 1.6; color: var(--ink-2); }
.ticks li + li { border-top: 1px solid var(--line); }
.ticks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 14px;
  width: 11px;
  height: 6px;
  border-left: 1.6px solid var(--ink-3);
  border-bottom: 1.6px solid var(--ink-3);
  transform: rotate(-45deg);
}

/* ------------------------------------------------------------------ 首页功能卡片 */

.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.feature-card { padding: 16px 16px 32px; border-radius: var(--r-xl); background: var(--surface); border: 1px solid var(--line); }
.feature-card h3 { margin: 28px 16px 6px; font-family: var(--serif); font-size: 26px; font-weight: 500; line-height: 1.3; }
.feature-card p { margin: 0 16px; font-size: 16px; color: var(--ink-3); }

/* ------------------------------------------------------------------ 价格 */

.plans { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; max-width: 880px; margin: 0 auto; }
.plans.single { grid-template-columns: minmax(0, 1fr); max-width: 440px; }
.plan {
  display: flex;
  flex-direction: column;
  padding: 32px;
  border-radius: var(--r-xl);
  background: var(--surface);
  border: 1px solid var(--line);
}
.plan-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.plan h3 { margin: 0; font-family: var(--serif); font-size: 28px; font-weight: 500; }
.plan-sub { margin: 6px 0 0; font-size: 15px; color: var(--ink-3); }
.plan-badge {
  flex: none;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
}
.price { display: flex; align-items: baseline; gap: 8px; margin: 32px 0 6px; }
.price .amount { font-family: var(--serif); font-size: 52px; font-weight: 500; line-height: 1; font-variant-numeric: tabular-nums; }
.price .unit { font-size: 16px; color: var(--ink-3); }
.plan-note { margin: 0; font-size: 15px; color: var(--ink-3); }
.plan-note s { margin-right: 10px; }
.plan-note .save { color: var(--accent-2); font-weight: 600; }
.plan-fine { margin: 4px 0 0; font-size: 14px; line-height: 1.6; color: var(--ink-3); }
.plan .ticks { margin: 24px 0 0; }
.plan-cta { margin-top: auto; }
.plan > :nth-last-child(2) { margin-bottom: 32px; }

.plan.featured { background: var(--stage); border-color: var(--stage); color: var(--stage-ink); }
.plan.featured h3, .plan.featured .amount { color: var(--stage-ink); }
.plan.featured .plan-sub, .plan.featured .unit, .plan.featured .plan-note, .plan.featured .plan-fine { color: var(--stage-ink-3); }
.plan.featured .plan-note .save { color: #f07a74; }
.plan.featured .btn { background: var(--stage-ink); color: #141413; }
.plan.featured .btn:hover { background: #fff; }
.plan.featured .ticks li { color: var(--stage-ink-2); border-color: var(--stage-line); }
.plan.featured .ticks li::before { border-color: var(--stage-ink-3); }
@media (prefers-color-scheme: dark) {
  .plan.featured { background: var(--surface-2); border-color: var(--line-2); }
}

.plan-group + .plan-group { margin-top: 48px; }
.plan-group-title { margin: 0 0 20px; font-size: 18px; text-align: center; color: var(--ink-2); }
.plan-tabs[hidden] { display: none; }
.js-plans .plan-group:not(.on) { display: none; }
.js-plans .plan-group-title { display: none; }
.js-plans .plan-group + .plan-group { margin-top: 0; }

/* ------------------------------------------------------------------ 常见问题 */

.faq-list { max-width: 760px; margin: 0 auto; border-top: 1px solid var(--line); }
details.faq { border-bottom: 1px solid var(--line); }
details.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
  font-size: 18px;
  font-weight: 500;
  list-style: none;
  cursor: pointer;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  margin-right: 4px;
  border-right: 1.6px solid var(--ink-3);
  border-bottom: 1.6px solid var(--ink-3);
  transform: translateY(-3px) rotate(45deg);
  transition: transform .2s ease;
}
details.faq[open] summary::after { transform: translateY(2px) rotate(-135deg); }
details.faq .answer { padding: 0 48px 24px 0; font-size: 16px; color: var(--ink-2); }


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

.footer { padding: 64px 0 40px; border-top: 1px solid var(--line); font-size: 14px; }
.footer-grid { display: flex; justify-content: space-between; align-items: flex-start; gap: 72px; }
.footer-brand img { display: block; height: 30px; width: auto; margin-bottom: 16px; }
.footer-brand p { max-width: 24em; margin: 0; color: var(--ink-3); line-height: 1.7; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 28px; }
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { margin: 0; padding: 4px 0; }
.footer li a { color: var(--ink-2); text-decoration: none; }
.footer li a:hover { color: var(--ink); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--ink-3);
  font-size: 13px;
}
.footer.compact { padding: 28px 0; }
.footer.compact .footer-bottom { margin: 0; padding: 0; border: 0; }

/* ------------------------------------------------------------------ 下载 */

.dl-head { text-align: center; margin-bottom: 64px; }
.dl-head h2 { margin-bottom: 12px; }
.dl-head p { margin: 0; font-size: 17px; color: var(--ink-3); }
.dl-head .note { max-width: 680px; margin: 28px auto 0; text-align: left; }

.dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; max-width: 880px; margin: 0 auto; }
.dl-card { display: flex; flex-direction: column; padding: 32px; border-radius: var(--r-xl); background: var(--surface); border: 1px solid var(--line); }
.dl-os { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 6px; }
.dl-os h2 { margin: 0; font-size: 28px; }
.dl-req { margin: 0 0 28px; font-size: 14px; color: var(--ink-3); }
.dl-asset + .dl-asset { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line); }
.dl-asset .meta { margin-top: 10px; font-size: 13px; color: var(--ink-3); text-align: center; }
.dl-empty { margin: auto 0 0; padding: 14px; border-radius: var(--r); background: var(--surface-2); font-size: 14px; color: var(--ink-3); text-align: center; }
.dl-none { max-width: 640px; margin: 0 auto; }
.hash { font-family: var(--mono); font-size: 12px; line-height: 1.6; color: var(--ink-3); word-break: break-all; }

.release-notes { max-width: 880px; margin: 24px auto 0; padding: 28px 32px; border-radius: var(--r-xl); background: var(--surface); border: 1px solid var(--line); }
.release-notes h3 { font-size: 17px; margin-bottom: 12px; }
.release-notes ul { margin: 0; color: var(--ink-2); font-size: 15px; }

/* ------------------------------------------------------------------ 条款正文 */

.doc { max-width: 720px; margin: 0 auto; }
.doc-head { margin-bottom: 40px; padding-bottom: 32px; border-bottom: 1px solid var(--line); }
.doc-head h1 { margin-bottom: 12px; }
.doc-head .meta { margin: 0; font-size: 14px; color: var(--ink-3); }
.doc h2 { margin: 48px 0 14px; font-size: 24px; }
.doc p, .doc li { color: var(--ink-2); }
.doc strong { color: var(--ink); }

/* ------------------------------------------------------------------ 卡片、徽标、提示 */

.card { padding: 28px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--line); }
.card.flat { background: var(--surface-2); border-color: transparent; }
.card > h2, .card > h3 { margin-top: 0; }
.card h2, .card h3 { font-family: var(--font); font-weight: 600; }
.card h2 { font-size: 18px; line-height: 1.4; }
.card h3 { font-size: 17px; margin-bottom: 12px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.card-head h2, .card-head h3 { margin: 0; }
.card-head a { font-size: 14px; color: var(--ink-3); }
.card-head a:hover { color: var(--ink); }
.card-foot { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--line); }
p.card-foot, dl.card-foot { margin-bottom: 0; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 22px;
  padding: 0 9px;
  border-radius: 999px;
  background: var(--quiet);
  color: var(--ink-2);
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  vertical-align: middle;
}
.tag.good { background: var(--good-soft); color: var(--good); }
.tag.warn { background: var(--warn-soft); color: var(--warn); }
.tag.bad { background: var(--bad-soft); color: var(--bad); }
.tag.accent { background: var(--primary); color: var(--on-primary); }
.tag.good::before, .tag.warn::before, .tag.bad::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.note {
  margin: 0 0 20px;
  padding: 14px 18px;
  border-radius: 12px;
  background: var(--surface-2);
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.7;
}
.note strong { color: var(--ink); }
.note.good { background: var(--good-soft); }
.note.warn { background: var(--warn-soft); }
.note.bad { background: var(--bad-soft); }
.note.good strong { color: var(--good); }
.note.warn strong { color: var(--warn); }
.note.bad strong { color: var(--bad); }
.note p:last-child { margin-bottom: 0; }
.note.small { font-size: 14px; }

.empty { padding: 56px 24px; text-align: center; color: var(--ink-3); }
.empty p { margin: 0 0 16px; }
.empty p:last-child { margin: 0; }

/* ------------------------------------------------------------------ 表格 */

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--surface); }
.card .table-wrap { margin: 0 -28px; border: 0; border-top: 1px solid var(--line); border-radius: 0; background: transparent; }
.card .table-wrap:last-child { margin-bottom: -28px; }
table.data { width: 100%; border-collapse: collapse; font-size: 14px; }
table.data th, table.data td { padding: 10px 12px; text-align: left; vertical-align: middle; border-bottom: 1px solid var(--line); }
table.data th:first-child, table.data td:first-child { padding-left: 28px; }
table.data th:last-child, table.data td:last-child { padding-right: 28px; }
table.data th { font-size: 12.5px; font-weight: 500; color: var(--ink-3); white-space: nowrap; background: var(--surface); }
table.data tbody tr:last-child td { border-bottom: 0; }
table.data tbody tr:hover td { background: var(--surface-2); }
table.data td.num, table.data th.num { text-align: right; font-variant-numeric: tabular-nums; }
table.data td.nowrap { white-space: nowrap; }
table.data td.clip { max-width: 0; width: 38%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
table.data a { text-decoration: none; }
table.data a:hover { text-decoration: underline; text-underline-offset: 3px; }
table.data td .btn + .btn, table.data td form + form, table.data td .btn + form, table.data td form + .btn { margin-left: 6px; }
table.data td form { display: inline; margin: 0; }
table.plain { width: 100%; border-collapse: collapse; font-size: 14px; }
table.plain td { padding: 10px 0; border-bottom: 1px solid var(--line); }
table.plain tr:last-child td { border-bottom: 0; }

/* ------------------------------------------------------------------ 表单 */

.field { margin-bottom: 18px; }
.field > label { display: block; margin-bottom: 6px; font-size: 14px; font-weight: 500; color: var(--ink); }
.field .help { margin-top: 6px; font-size: 13px; line-height: 1.6; color: var(--ink-3); }
.field .errors { margin-top: 6px; font-size: 13px; color: var(--bad); }
.field ul { margin: 0; padding: 0; list-style: none; }
.field ul li { margin: 0; }
.errors { color: var(--bad); }

input[type=text], input[type=email], input[type=password], input[type=number], input[type=url],
input[type=datetime-local], input[type=date], input[type=month], input[type=search], select, textarea {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line-2);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font);
  font-size: 15px;
  transition: border-color .15s ease;
}
textarea { height: auto; min-height: 96px; padding: 10px 12px; line-height: 1.6; resize: vertical; }
select { padding-right: 32px; }
input:hover, select:hover, textarea:hover { border-color: var(--ink-4); }
/* 输入状态只显示光标，不加聚焦高亮 */
input:focus, select:focus, textarea:focus { outline: none; }
input::placeholder, textarea::placeholder { color: var(--ink-4); }
input[readonly] { background: var(--surface-2); }
input[type=checkbox], input[type=radio] { width: 16px; height: 16px; margin: 0; accent-color: var(--ink); }
input[type=file] { font-family: var(--font); font-size: 14px; color: var(--ink-2); }

.check { display: flex; align-items: flex-start; gap: 10px; font-size: 15px; line-height: 1.6; cursor: pointer; }
.check input { margin-top: 4px; flex: none; }
.checkboxes { display: grid; gap: 8px; }
.checkboxes label { display: flex; align-items: flex-start; gap: 10px; font-size: 15px; font-weight: 400; }
.checkboxes input { margin-top: 5px; flex: none; }

.input-row { display: flex; gap: 10px; }
.input-row input { flex: 1 1 auto; min-width: 0; }
.input-row .btn { flex: none; min-width: 116px; }
.implicit-submit { position: absolute; width: 0; height: 0; padding: 0; border: 0; opacity: 0; pointer-events: none; }
.inline-form { display: flex; align-items: flex-start; gap: 10px; }
.inline-form input { flex: 1 1 auto; }
.inline-form .btn { flex: none; }

fieldset { margin: 0 0 20px; padding: 16px 20px; border: 1px solid var(--line); border-radius: 12px; }
legend { padding: 0 6px; font-size: 14px; font-weight: 600; color: var(--ink-2); }

/* ------------------------------------------------------------------ 登录注册 */

.auth { padding: 96px 0 128px; }
.auth-box { width: 100%; max-width: 420px; margin: 0 auto; padding: 0 20px; }
.auth-mark { display: block; width: 52px; height: 52px; margin: 0 auto 28px; }
.auth-box h1 { margin-bottom: 8px; font-size: 36px; text-align: center; }
.auth-intro { margin: 0 0 32px; font-size: 15px; color: var(--ink-3); text-align: center; }
.auth-card { padding: 32px; border-radius: var(--r-xl); background: var(--surface); border: 1px solid var(--line); }
.auth-card .note { margin-bottom: 20px; }
.auth-links { display: flex; justify-content: space-between; gap: 16px; margin-top: 24px; font-size: 14px; color: var(--ink-3); }
.auth-links.center { justify-content: center; }
.auth-links a { color: var(--ink-2); }
.auth-links a:hover { color: var(--ink); }

/* ------------------------------------------------------------------ 用户中心 / 管理后台 */

.shell { display: grid; grid-template-columns: 184px minmax(0, 1fr); gap: 56px; align-items: start; padding-top: 48px; padding-bottom: 96px; }
.side { position: sticky; top: 116px; }
.side-title { margin: 0 0 16px 12px; font-size: 13px; color: var(--ink-3); }
.side-group { margin: 24px 0 6px 12px; font-size: 12.5px; font-weight: 500; color: var(--ink-4); }
.side nav { display: flex; flex-direction: column; gap: 2px; }
.side nav a { display: block; padding: 7px 12px; border-radius: 8px; font-size: 15px; line-height: 1.6; color: var(--ink-2); }
.side nav a:hover { background: var(--quiet); color: var(--ink); }
.side nav a.on { background: var(--quiet); color: var(--ink); font-weight: 500; }
.side .side-end { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line); }
.side-end form { margin: 0; }
.side-end button { display: block; width: 100%; padding: 7px 12px; border: 0; border-radius: 8px; background: none; font: inherit; font-size: 15px; line-height: 1.6; text-align: left; color: var(--ink-2); cursor: pointer; }
.side-end button:hover { background: var(--quiet); color: var(--ink); }

.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 32px; }
.page-head h1 { margin: 0; font-size: 36px; line-height: 1.25; }
.page-head .sub { margin: 8px 0 0; font-size: 15px; color: var(--ink-3); }
.page-head .btn-row { flex: none; }

/* 页内页签：一个入口下的几个子页 */
.subnav { display: flex; gap: 28px; margin: -8px 0 32px; border-bottom: 1px solid var(--line); }
.subnav a { margin-bottom: -1px; padding: 10px 0; border-bottom: 2px solid transparent; font-size: 15px; color: var(--ink-3); }
.subnav a:hover { color: var(--ink); }
.subnav a.on { border-bottom-color: var(--ink); color: var(--ink); font-weight: 500; }

/* 分组表单：左边组名，右边字段 */
.form-section { display: grid; grid-template-columns: 184px minmax(0, 1fr); gap: 32px; padding: 28px 0; border-top: 1px solid var(--line); }
.form-section:first-of-type { padding-top: 0; border-top: 0; }
.form-section > h3 { margin: 0; font-size: 15px; font-weight: 600; line-height: 1.6; }
.form-section .field:last-child { margin-bottom: 0; }
.form-actions { display: flex; gap: 10px; padding-top: 24px; border-top: 1px solid var(--line); }

/* 可折叠卡片：次要区块默认收起 */
details.fold { padding: 0; }
details.fold > summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 28px; font-size: 16px; font-weight: 600; list-style: none; cursor: pointer; }
details.fold > summary::-webkit-details-marker { display: none; }
details.fold > summary::after { content: ""; flex: none; width: 8px; height: 8px; border-right: 1.6px solid var(--ink-3); border-bottom: 1.6px solid var(--ink-3); transform: translateY(-2px) rotate(45deg); transition: transform .2s ease; }
details.fold[open] > summary::after { transform: translateY(2px) rotate(-135deg); }
details.fold > summary .dim { margin-left: 12px; font-size: 14px; font-weight: 400; }
details.fold > .fold-body { padding: 4px 28px 28px; }
details.fold + details.fold, .card + details.fold, details.fold + .card { margin-top: 16px; }
.stack > * + details.fold, .stack > details.fold + * { margin-top: 20px; }

.filters { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; }
.filters select { width: 180px; }
.filters input[type=text] { width: 300px; }

.pager { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 24px; font-size: 14px; color: var(--ink-3); }

.kpis { display: flex; flex-wrap: wrap; gap: 16px; }
.kpi { flex: 1 1 190px; padding: 22px 24px; border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--line); }
.kpi .label { font-size: 13px; color: var(--ink-3); }
.kpi .value {
  margin: 8px 0 2px;
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 500;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.kpi .value small { margin-left: 3px; font-family: var(--font); font-size: 14px; color: var(--ink-3); }
.kpi .sub { font-size: 13px; color: var(--ink-3); }
.kpi .sub a { color: var(--ink-2); text-decoration: underline; text-decoration-color: var(--line-2); text-underline-offset: 3px; }

.sub-status { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }
.sub-status .plan-name { font-family: var(--serif); font-size: 30px; font-weight: 500; line-height: 1.3; }
.sub-status .days { font-size: 15px; color: var(--ink-3); }
.bar { height: 6px; overflow: hidden; border-radius: 999px; background: var(--quiet); }
.bar > span { display: block; height: 100%; border-radius: 999px; background: var(--ink); }
.bar.accent > span { background: var(--accent); }

.kv { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 10px 24px; margin: 0; font-size: 15px; }
.kv dt { color: var(--ink-3); }
.kv dd { margin: 0; color: var(--ink); }
.kv.small { font-size: 14px; gap: 8px 20px; }

.copy-field { font-family: var(--mono); font-size: 13px; }

.messages-inline { margin-bottom: 24px; }
.messages-inline .note { margin: 0; }
.messages-inline .note + .note { margin-top: 10px; }
.section-title { margin: 48px 0 16px; font-family: var(--font); font-size: 18px; font-weight: 600; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 28px; }
.form-grid .field.wide { grid-column: 1 / -1; }
.key-item { padding: 20px 0; border-top: 1px solid var(--line); }
.key-item:last-child { padding-bottom: 0; }
pre.hash { margin: 8px 0 0; white-space: pre-wrap; }
.code-block { padding: 12px 14px; border-radius: var(--r); background: var(--surface-2); }

/* ------------------------------------------------------------------ 结账与订单 */

.checkout-wrap { max-width: calc(1040px + var(--gutter) * 2); }
.checkout { display: grid; grid-template-columns: minmax(0, 61.8fr) minmax(0, 38.2fr); gap: 32px; align-items: start; }
.checkout .summary { position: sticky; top: 104px; }
.channel {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 10px;
  padding: 16px 18px;
  border: 1px solid var(--line-2);
  border-radius: 12px;
  background: var(--surface);
  cursor: pointer;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.channel:hover { border-color: var(--ink-4); }
.channel:has(input:checked) { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.channel input { margin-top: 4px; flex: none; }
.channel .name { display: block; font-weight: 600; }
.channel .desc { display: block; margin-top: 2px; font-size: 14px; color: var(--ink-3); }

.sum-row { display: flex; justify-content: space-between; gap: 16px; padding: 8px 0; font-size: 15px; }
.sum-row span:last-child { font-variant-numeric: tabular-nums; white-space: nowrap; }
.sum-row.total { margin-top: 8px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 17px; font-weight: 600; }
.sum-row.total span:last-child { font-family: var(--serif); font-size: 28px; font-weight: 500; line-height: 1.2; }

.order-box { max-width: 640px; margin: 0 auto; }
.order-status { text-align: center; margin-bottom: 36px; }
.order-status .icon { display: grid; place-items: center; width: 56px; height: 56px; margin: 0 auto 20px; border-radius: 50%; background: var(--quiet); color: var(--ink); }
.order-status .icon svg { width: 26px; height: 26px; }
.order-status .icon.good { background: var(--good-soft); color: var(--good); }
.order-status h1 { margin-bottom: 8px; font-size: 36px; }
.order-status p { margin: 0; color: var(--ink-3); }
.qr { width: max-content; margin: 8px auto 0; padding: 16px; border-radius: var(--r-lg); background: #fff; border: 1px solid var(--line); }
.qr img, .qr svg { display: block; width: 220px; height: 220px; }

/* ------------------------------------------------------------------ 错误页 */

.error-page { padding: 160px 0; text-align: center; }
.error-page .code { font-family: var(--mono); font-size: 14px; color: var(--ink-4); margin-bottom: 16px; }
.error-page h1 { margin-bottom: 12px; }
.error-page p { color: var(--ink-3); }
.error-page .btn-row { justify-content: center; margin-top: 32px; }

/* ------------------------------------------------------------------ 窄窗口 */

@media (max-width: 1180px) {
  :root { --gutter: 32px; }
  .hero h1 { font-size: 52px; }
  .hero-grid { gap: 48px; }
  .shell { gap: 40px; }
}

@media (max-width: 960px) {
  h1 { font-size: 40px; }
  h2 { font-size: 32px; }
  .section { padding: 88px 0; }
  .section.tight { padding: 64px 0 88px; }
  .section.flush { padding-top: 0; }
  .hero { padding: 64px 0 88px; }
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
  .shell { grid-template-columns: minmax(0, 1fr); }
  .side { position: static; }
  .side nav { flex-direction: row; flex-wrap: wrap; }
  .form-section { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .checkout { grid-template-columns: minmax(0, 1fr); }
  .checkout .summary { position: static; }
}

@media (max-width: 720px) {
  :root { --gutter: 20px; }
  .nav { display: none; }
  .topbar-right { margin-left: auto; }
  .hero h1 { font-size: 40px; }
  .lede { font-size: 18px; }
  .feature-grid, .plans, .dl, .form-grid { grid-template-columns: minmax(0, 1fr); }
  .feature-card h3 { font-size: 24px; }
  .footer-grid { flex-direction: column; gap: 24px; }
  .footer-links { justify-content: flex-start; }
  .footer-bottom { flex-direction: column; gap: 4px; }
  .page-head { flex-direction: column; align-items: flex-start; }
}