/* ============================================================
   Easel-dsh · 站点设计系统 v2
   纸面 / 墨绿 / 朱砂 / 钴蓝 · 编辑型生产板
   ============================================================ */

@font-face {
  font-family: "Bricolage Grotesque";
  src: url("../assets/fonts/bricolage-grotesque-latin.woff2") format("woff2");
  font-weight: 400 800;
  font-style: normal;
  font-display: swap;
}

:root {
  --canvas: #F1EEE4;
  --paper: #FBF9F2;
  --paper-2: #F6F2E7;
  --ink: #16241E;
  --ink-2: #3A4941;
  --ink-3: #6C776F;
  --line: #D5CFBF;
  --line-2: #E5DFD1;
  --sage: #E3E9DD;
  --sage-2: #D4DECB;
  --signal: #E7502C;
  --signal-2: #C83F1D;
  --signal-wash: #F7DDD2;
  --cobalt: #2743E0;
  --night: #0E1B16;
  --night-2: #14241D;
  --night-line: #2B3D33;
  --night-ink: #EDF0E8;
  --night-dim: #9EAA9F;
  --ok: #2F7D57;

  --radius: 6px;
  --radius-s: 3px;
  --shadow: 0 1px 0 rgba(22, 36, 30, .03), 0 18px 44px rgba(22, 36, 30, .08);

  --font-display: "Bricolage Grotesque", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", monospace;
  --font-serif: "Songti SC", "STSong", "Noto Serif CJK SC", "SimSun", serif;
}

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

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

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

img, svg { display: block; max-width: 100%; }
a { color: inherit; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
code, kbd { font-family: var(--font-mono); font-size: .92em; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  margin: 0;
  line-height: 1.14;
  letter-spacing: -.035em;
  font-weight: 750;
}

h1 { font-size: clamp(2.7rem, 6vw, 4.8rem); }
h2 { font-size: clamp(1.9rem, 3.6vw, 3rem); }
h3 { font-size: 1.15rem; letter-spacing: -.02em; }

::selection { background: var(--signal-wash); color: var(--ink); }
:focus-visible { outline: 2px solid var(--cobalt); outline-offset: 3px; border-radius: 2px; }
[hidden] { display: none !important; }

.skip-link {
  position: absolute;
  left: 16px;
  top: -70px;
  z-index: 100;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  text-decoration: none;
  border-radius: 2px;
}
.skip-link:focus { top: 12px; }

/* ---------- 布局与通用部件 ---------- */

.wrap {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: clamp(20px, 4.5vw, 52px);
}

.section { padding: clamp(64px, 9vw, 112px) 0; }
.section--flush { padding-top: 0; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: .6;
}

.lead {
  max-width: 56ch;
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--ink-2);
}

.mono { font-family: var(--font-mono); }
.serif-accent { font-family: var(--font-serif); font-weight: 500; letter-spacing: -.01em; }

.section-head { max-width: 780px; margin-bottom: clamp(32px, 5vw, 56px); }
.section-head h2 { margin-bottom: 16px; }
.section-head .lead { max-width: 54ch; }

.tag {
  display: inline-block;
  padding: 3px 7px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: .56rem;
  line-height: 1.4;
  letter-spacing: .08em;
  color: var(--ink-3);
  white-space: nowrap;
}
.tag--signal { color: var(--signal); border-color: rgba(231, 80, 44, .4); }
.tag--night { color: var(--night-dim); border-color: var(--night-line); }

/* ---------- 顶部导航 ---------- */

.site-head {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(241, 238, 228, .9);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-2);
}

.head-inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 70px;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
  text-decoration: none;
}
.wordmark img {
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
}
.wordmark-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  letter-spacing: -.02em;
}
.wordmark-sub {
  padding-left: 10px;
  border-left: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .08em;
  color: var(--ink-3);
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
}
.site-nav a {
  position: relative;
  text-decoration: none;
  font-size: .9rem;
  color: var(--ink-2);
  transition: color .15s ease;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }
.site-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  background: var(--signal);
}
.site-nav a.nav-cta {
  padding: 8px 16px;
  border-radius: 2px;
  background: var(--ink);
  color: var(--paper);
  font-weight: 600;
  transition: background .15s ease, transform .15s ease;
}
.site-nav a.nav-cta:hover { background: var(--signal); transform: translateY(-1px); }

.nav-mobile { display: none; margin-left: auto; position: relative; }
.nav-mobile summary {
  list-style: none;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
}
.nav-mobile summary::-webkit-details-marker { display: none; }
.nav-mobile summary::after { content: " +"; color: var(--signal); }
.nav-mobile[open] summary::after { content: " −"; }
.nav-mobile nav {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  z-index: 70;
  display: grid;
  min-width: 190px;
  padding: 8px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.nav-mobile nav a {
  padding: 10px 12px;
  border-radius: 2px;
  text-decoration: none;
  font-size: .92rem;
}
.nav-mobile nav a:hover { background: var(--paper-2); }
.nav-mobile nav a[aria-current="page"] { color: var(--signal); font-weight: 600; }

/* GitHub 图标链接:桌面在导航里(下载左侧),移动端在菜单按钮左侧 */
.gh-link {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--ink-2);
  transition: color .15s ease, border-color .15s ease, transform .15s ease, background .15s ease;
}
.gh-link:hover { color: var(--paper); background: var(--ink); border-color: var(--ink); transform: translateY(-1px); }
.gh-link--m { display: none; }

/* ---------- 按钮与文字链 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 20px;
  border: 1px solid transparent;
  border-radius: 3px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .96rem;
  line-height: 1.2;
  letter-spacing: -.01em;
  transition: transform .16s ease, background .16s ease, color .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--ink);
  color: var(--paper);
  box-shadow: 0 10px 24px rgba(22, 36, 30, .16);
}
.btn-primary:hover { background: var(--signal); box-shadow: 0 12px 28px rgba(231, 80, 44, .24); }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-signal { background: var(--signal); color: #fff; }
.btn-signal:hover { background: var(--signal-2); }
.btn .btn-sub {
  font-family: var(--font-mono);
  font-size: .62rem;
  font-weight: 400;
  letter-spacing: .04em;
  opacity: .72;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--ink);
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .04em;
  text-decoration: none;
  color: var(--ink);
  transition: color .15s ease, border-color .15s ease;
}
.text-link::after { content: "→"; transition: transform .15s ease; }
.text-link:hover { color: var(--signal); border-color: var(--signal); }
.text-link:hover::after { transform: translateX(3px); }

/* ============================================================
   首页首屏
   ============================================================ */

.hero { padding: clamp(48px, 7vw, 92px) 0 clamp(56px, 8vw, 104px); overflow: hidden; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}

.hero-copy { position: relative; z-index: 2; }
.hero h1 { margin: 0 0 24px; line-height: 1.04; letter-spacing: -.05em; }
.h1-line { display: block; }
.h1-accent { position: relative; display: inline-block; }
.h1-accent .accent-stroke {
  position: absolute;
  left: -2%;
  bottom: -.09em;
  width: 104%;
  height: .16em;
  color: var(--signal);
  overflow: visible;
}
.h1-accent .accent-stroke path {
  fill: none;
  stroke: currentColor;
  stroke-width: 4;
  stroke-linecap: round;
}

.hero-sub {
  max-width: 46ch;
  margin-bottom: 30px;
  font-size: 1.06rem;
  line-height: 1.85;
  color: var(--ink-2);
}

.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.hero-facts li { display: grid; gap: 3px; }
.hero-facts b { font-family: var(--font-display); font-size: .9rem; font-weight: 700; }
.hero-facts span { font-size: .76rem; line-height: 1.5; color: var(--ink-3); }

/* ---------- 问题段 ---------- */

.problem-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: clamp(32px, 6vw, 80px);
  align-items: start;
  padding-top: clamp(12px, 2vw, 24px);
}
.problem-grid h2 { margin: 0; }
.problem-copy { display: grid; gap: 18px; max-width: 58ch; font-size: .96rem; line-height: 1.85; color: var(--ink-2); }
.problem-list { display: grid; gap: 8px; padding-top: 14px; border-top: 1px solid var(--line); }
.problem-list li { display: flex; gap: 10px; font-size: .84rem; line-height: 1.6; }
.problem-list li::before {
  content: "✕";
  flex-shrink: 0;
  color: var(--signal);
  font-family: var(--font-mono);
  font-size: .62rem;
  line-height: 1.9;
}

/* ---------- 首屏工作台演示 ---------- */

.demo { position: relative; }
.demo::before {
  content: "";
  position: absolute;
  inset: 18px -18px -18px 18px;
  background: var(--sage);
  border-radius: 8px;
  transform: rotate(-1.2deg);
  z-index: 0;
}
.demo-shell {
  position: relative;
  z-index: 1;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 7px;
  box-shadow: var(--shadow);
}

.demo-top {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 38px;
  padding: 0 14px;
  background: var(--paper-2);
  border-bottom: 1px solid var(--line-2);
}
.demo-dots { display: flex; gap: 5px; }
.demo-dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--line); }
.demo-title {
  margin-inline: auto;
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .04em;
  color: var(--ink-3);
}
.demo-badge {
  padding: 2px 6px;
  border: 1px solid rgba(231, 80, 44, .35);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: .56rem;
  color: var(--signal);
  white-space: nowrap;
}

.demo-stages {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-bottom: 1px solid var(--line-2);
}
.demo-tab {
  appearance: none;
  min-width: 0;
  padding: 10px 6px 9px;
  border: 0;
  border-right: 1px solid var(--line-2);
  border-bottom: 2px solid transparent;
  background: transparent;
  text-align: left;
  color: var(--ink-3);
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.demo-tab:last-child { border-right: 0; }
.demo-tab span {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-mono);
  font-size: .54rem;
  letter-spacing: .08em;
  opacity: .7;
}
.demo-tab b {
  font-family: var(--font-display);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: -.02em;
}
.demo-tab:hover { background: var(--paper-2); color: var(--ink); }
.demo-tab[aria-selected="true"] {
  background: var(--paper);
  border-bottom-color: var(--signal);
  color: var(--ink);
}

.demo-viewport {
  position: relative;
  min-height: 352px;
  padding: 16px;
  background: repeating-linear-gradient(0deg, transparent 0 31px, rgba(22, 36, 30, .035) 31px 32px);
}
.demo-progress { height: 2px; margin-bottom: 14px; background: var(--line-2); overflow: hidden; }
.demo-progress i {
  display: block;
  height: 100%;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
}
.demo-shell.is-playing .demo-progress i { animation: demo-progress 4.6s linear forwards; }
.demo-shell.is-paused .demo-progress i { animation-play-state: paused; }
@keyframes demo-progress { to { transform: scaleX(1); } }

.demo-panel { display: none; }
.demo-panel.is-active { display: block; animation: panel-in .32s ease both; }
@keyframes panel-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.demo-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.demo-kicker {
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--signal);
}
.demo-meta { font-family: var(--font-mono); font-size: .6rem; color: var(--ink-3); }
.demo-panel h4 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  letter-spacing: -.02em;
}
.demo-sub { margin-bottom: 12px; font-size: .74rem; line-height: 1.6; color: var(--ink-3); }

.hot-list li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line-2);
  font-size: .78rem;
}
.hot-list li:last-child { border-bottom: 0; }
.hot-rank { font-family: var(--font-mono); font-size: .6rem; color: var(--signal); }
.hot-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hot-delta { font-family: var(--font-mono); font-size: .58rem; color: var(--ink-3); }
.hot-delta.up { color: var(--ok); }

.demo-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line-2);
  font-family: var(--font-mono);
  font-size: .6rem;
  color: var(--ink-3);
}
.demo-action { color: var(--cobalt); white-space: nowrap; }

.week-strip { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; margin: 8px 0 12px; }
.week-day {
  padding: 5px 0;
  border: 1px solid var(--line-2);
  border-radius: 2px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: .52rem;
  color: var(--ink-3);
}
.week-day b { display: block; margin-top: 2px; font-size: .68rem; color: var(--ink); }
.week-day.is-active { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.week-day.is-active b { color: var(--paper); }

.schedule-card {
  display: grid;
  gap: 4px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--paper);
}
.schedule-card b { font-size: .78rem; }
.schedule-card span { font-family: var(--font-mono); font-size: .58rem; color: var(--ink-3); }

.draft-card {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--paper);
}
.draft-title { margin-bottom: 8px; font-family: var(--font-display); font-size: .9rem; font-weight: 700; }
.bar { height: 7px; margin: 6px 0; border-radius: 2px; background: var(--line-2); }
.bar.w90 { width: 90%; } .bar.w76 { width: 76%; } .bar.w60 { width: 60%; }
.bar.w40 { width: 40%; }
.chip-row { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 10px; }
.chip {
  padding: 3px 6px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: .54rem;
  color: var(--ink-2);
}
.chip.is-hot { border-color: rgba(231, 80, 44, .4); color: var(--signal); }

.account-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--line-2);
  font-size: .74rem;
}
.account-list li:last-child { border-bottom: 0; }
.account-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); }
.account-dot.off { background: var(--line); }
.account-state { margin-left: auto; font-family: var(--font-mono); font-size: .56rem; color: var(--ink-3); }
.publish-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 12px;
  padding: 9px 10px;
  border-radius: 3px;
  background: var(--ink);
  color: var(--paper);
  font-size: .72rem;
}
.publish-bar span { font-family: var(--font-mono); font-size: .56rem; opacity: .7; }

.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin: 8px 0 10px; }
.metric { padding: 8px; border: 1px solid var(--line-2); border-radius: 2px; }
.metric b { display: block; font-family: var(--font-display); font-size: 1.1rem; letter-spacing: -.03em; }
.metric span { font-family: var(--font-mono); font-size: .54rem; color: var(--ink-3); }
.spark { width: 100%; height: 42px; margin: 2px 0 8px; }
.spark path { fill: none; stroke: var(--signal); stroke-width: 2.4; stroke-linecap: round; }
.insight {
  padding: 6px 10px;
  border-left: 2px solid var(--signal);
  background: var(--signal-wash);
  font-size: .7rem;
  line-height: 1.55;
}

.demo-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 14px;
  border-top: 1px solid var(--line-2);
  background: var(--paper-2);
}
.demo-note { font-family: var(--font-mono); font-size: .56rem; color: var(--ink-3); }
.demo-toggle {
  appearance: none;
  padding: 2px;
  border: 0;
  background: transparent;
  font-family: var(--font-mono);
  font-size: .58rem;
  color: var(--ink-2);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.demo-toggle:hover { color: var(--signal); }
.demo-counter { font-family: var(--font-mono); font-size: .58rem; color: var(--ink-3); }

/* ============================================================
   工作流 · 想法线
   ============================================================ */

.workflow {
  background: var(--sage);
  border-top: 1px solid var(--sage-2);
  border-bottom: 1px solid var(--sage-2);
}

.route { position: relative; }
.route-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  padding-top: 40px;
}
.route-line {
  position: absolute;
  top: 40px;
  left: 7%;
  right: 7%;
  height: 1px;
  background: var(--ink);
  opacity: .28;
}
.station { position: relative; }
.station-node {
  position: absolute;
  top: -16px;
  left: 50%;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  background: var(--sage);
  font-family: var(--font-mono);
  font-size: .6rem;
  transform: translateX(-50%);
}
.station-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 296px;
  margin-top: 22px;
  padding: 16px 15px 14px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--ink);
  border-radius: 3px;
  background: var(--paper);
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.station-card:hover {
  transform: translateY(-4px);
  border-top-color: var(--signal);
  box-shadow: var(--shadow);
}
.station-kicker {
  font-family: var(--font-mono);
  font-size: .54rem;
  letter-spacing: .12em;
  color: var(--signal);
}
.station-card h3 { font-size: 1.25rem; }
.station-copy { font-size: .8rem; line-height: 1.65; color: var(--ink-2); }
.station-points { display: grid; gap: 4px; margin-top: 2px; }
.station-points li {
  position: relative;
  padding-left: 11px;
  font-size: .71rem;
  line-height: 1.5;
  color: var(--ink-3);
}
.station-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--signal);
}
.station-visual { margin-top: auto; padding-top: 10px; border-top: 1px dashed var(--line); }

.mini-hot li {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  padding: 3px 0;
  font-family: var(--font-mono);
  font-size: .54rem;
  color: var(--ink-3);
}
.mini-hot b {
  overflow: hidden;
  color: var(--ink);
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.mini-week { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; }
.mini-week i { height: 18px; border: 1px solid var(--line-2); border-radius: 1px; }
.mini-week i.on { background: var(--signal); border-color: var(--signal); }
.mini-draft .bar { height: 5px; margin: 4px 0; }
.mini-accounts { display: flex; align-items: center; gap: 5px; }
.mini-accounts i { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); }
.mini-accounts i.off { background: var(--line); }
.mini-spark { width: 100%; height: 30px; }
.mini-spark path { fill: none; stroke: var(--signal); stroke-width: 2; }

.route-return { position: relative; height: 58px; margin-top: 16px; }
.route-return svg { width: 100%; height: 100%; }
.route-return path { fill: none; stroke: var(--ink-3); stroke-width: 1.2; stroke-dasharray: 4 6; }
.route-return path.route-arrow { stroke-width: 1.6; stroke-dasharray: none; }
.route-return-label {
  position: absolute;
  left: 50%;
  top: 50%;
  padding: 0 14px;
  background: var(--sage);
  font-family: var(--font-mono);
  font-size: .6rem;
  color: var(--ink-3);
  white-space: nowrap;
  transform: translate(-50%, -50%);
}

/* ============================================================
   能力账本
   ============================================================ */

.ledger { border-top: 1px solid var(--line); }
.ledger-row {
  position: relative;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) 280px;
  gap: 24px;
  align-items: start;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.ledger-row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: transparent;
  transition: background .15s ease;
}
.ledger-row:hover::before { background: var(--signal); }
.ledger-no { padding-top: 5px; font-family: var(--font-mono); font-size: .64rem; color: var(--signal); }
.ledger-main h3 { margin-bottom: 5px; font-size: 1.2rem; }
.ledger-main p { max-width: 60ch; font-size: .88rem; line-height: 1.7; color: var(--ink-2); }
.ledger-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: .6rem;
  color: var(--ink-3);
}

/* ============================================================
   私人 · 夜墨区块
   ============================================================ */

.privacy {
  position: relative;
  overflow: hidden;
  background: var(--night);
  color: var(--night-ink);
}
.privacy::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: .5;
  pointer-events: none;
}
.privacy .wrap {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: center;
}
.privacy .eyebrow { color: var(--night-dim); }
.privacy h2 { margin-bottom: 18px; color: var(--night-ink); }
.privacy .lead { color: var(--night-dim); }
.privacy .text-link { color: var(--night-ink); border-color: var(--night-dim); }
.privacy .text-link:hover { color: var(--signal); border-color: var(--signal); }

.receipt {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .25);
  transform: rotate(-.7deg);
  transition: transform .2s ease;
}
.receipt:hover { transform: rotate(0); }
.receipt-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--ink);
  font-family: var(--font-mono);
  font-size: .58rem;
  letter-spacing: .1em;
  color: var(--ink-3);
}
.receipt-head b { color: var(--signal); }
.receipt dl { display: grid; margin: 0; }
.receipt-row {
  display: grid;
  grid-template-columns: 82px 1fr;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line);
}
.receipt-row dt { font-family: var(--font-mono); font-size: .58rem; letter-spacing: .04em; color: var(--ink-3); }
.receipt-row dd { margin: 0; font-size: .82rem; line-height: 1.5; text-align: right; }
.receipt-note { margin-top: 14px; font-size: .7rem; line-height: 1.6; color: var(--ink-3); }
.receipt-stamp {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 8px;
  border: 2px solid var(--signal);
  color: var(--signal);
  font-family: var(--font-mono);
  font-size: .58rem;
  letter-spacing: .12em;
  transform: rotate(-2deg);
}

/* ============================================================
   真实界面
   ============================================================ */

.proof {
  background: var(--sage);
  border-top: 1px solid var(--sage-2);
  border-bottom: 1px solid var(--sage-2);
}
.proof-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}
.proof-head .lead { max-width: 46ch; }

.app-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  box-shadow: 0 26px 60px rgba(22, 36, 30, .16);
}
.app-frame-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 36px;
  padding: 0 14px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: .58rem;
}
.app-frame-bar .dots { display: flex; gap: 5px; }
.app-frame-bar .dots i { width: 6px; height: 6px; border-radius: 50%; background: rgba(255, 255, 255, .28); }
.app-frame-bar span:last-child { margin-left: auto; opacity: .6; }
.app-frame img { width: 100%; height: auto; }
.app-frame figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-top: 1px solid var(--line-2);
  font-family: var(--font-mono);
  font-size: .58rem;
  color: var(--ink-3);
}
.app-frame figcaption a { color: var(--cobalt); text-decoration: none; }
.app-frame figcaption a:hover { text-decoration: underline; }

.proof-notes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.proof-notes li { display: grid; gap: 4px; }
.proof-notes b { font-family: var(--font-display); font-size: .92rem; }
.proof-notes span { font-size: .74rem; line-height: 1.6; color: var(--ink-3); }

/* ============================================================
   更新预告
   ============================================================ */

.updates-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: clamp(36px, 6vw, 80px);
  align-items: start;
}
.updates-head h2 { margin-bottom: 16px; }
.release-teaser { display: grid; gap: 12px; }

.update-card {
  display: grid;
  gap: 8px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--signal);
  border-radius: 2px;
  background: var(--paper);
  text-decoration: none;
  transition: transform .16s ease, box-shadow .16s ease;
}
.update-card:hover { transform: translateX(3px); box-shadow: var(--shadow); }
.update-meta { display: flex; gap: 12px; font-family: var(--font-mono); font-size: .58rem; color: var(--ink-3); }
.update-meta b { color: var(--signal); font-weight: 600; }
.update-card h3 { font-size: .98rem; line-height: 1.5; letter-spacing: -.01em; }
.update-card ul { display: grid; gap: 3px; }
.update-card li { position: relative; padding-left: 10px; font-size: .74rem; color: var(--ink-2); }
.update-card li::before { content: "·"; position: absolute; left: 0; color: var(--signal); }
.update-more { margin-top: 2px; font-family: var(--font-mono); font-size: .6rem; color: var(--cobalt); }

.teaser-placeholder {
  display: grid;
  gap: 10px;
  padding: 20px;
  border: 1px dashed var(--line);
  border-radius: 2px;
  background: var(--paper);
}
.teaser-placeholder .bar { height: 8px; margin: 0; }
.teaser-error {
  padding: 16px;
  border: 1px dashed var(--line);
  border-radius: 2px;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--ink-2);
}

/* ============================================================
   收束 CTA
   ============================================================ */

.cta {
  position: relative;
  overflow: hidden;
  padding: clamp(64px, 9vw, 110px) 0;
  background: var(--signal);
  color: #fff;
}
.cta .wrap {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 36px;
}
.cta h2 { max-width: 14em; margin-bottom: 12px; color: #fff; }
.cta p { max-width: 44ch; font-size: .98rem; color: rgba(255, 255, 255, .82); }
.cta .btn { flex-shrink: 0; background: var(--ink); color: #fff; }
.cta .btn:hover { background: #000; }
.cta-meta {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: .58rem;
  color: rgba(255, 255, 255, .7);
  text-align: right;
}

/* ============================================================
   页脚
   ============================================================ */

.site-foot {
  padding: clamp(44px, 6vw, 72px) 0 36px;
  border-top: 1px solid var(--night-line);
  background: var(--night);
  color: var(--night-dim);
}
.foot-grid { display: grid; grid-template-columns: 1.2fr 2fr; gap: 48px; }
.foot-brand .wordmark { margin-bottom: 14px; color: var(--night-ink); }
.foot-brand .wordmark img { border-color: var(--night-line); }
.foot-brand .wordmark-sub { border-color: var(--night-line); color: var(--night-dim); }
.foot-tagline { max-width: 32ch; font-size: .9rem; line-height: 1.7; color: var(--night-dim); }
.foot-meta {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: .56rem;
  letter-spacing: .12em;
  color: var(--night-dim);
  opacity: .7;
}
.foot-nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.foot-nav h3 {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: .58rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--night-ink);
}
.foot-nav a {
  display: block;
  padding: 4px 0;
  color: var(--night-dim);
  text-decoration: none;
  font-size: .82rem;
  transition: color .15s ease;
}
.foot-nav a:hover { color: var(--night-ink); }
.foot-legal {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 44px;
  padding-top: 18px;
  border-top: 1px solid var(--night-line);
  font-size: .72rem;
  line-height: 1.8;
}
.foot-legal p:first-child { max-width: 86ch; }
.foot-legal p:last-child {
  font-family: var(--font-mono);
  font-size: .58rem;
  white-space: nowrap;
  opacity: .7;
}

/* ============================================================
   下载页
   ============================================================ */

.dl-hero { padding: clamp(48px, 7vw, 88px) 0 30px; }
.dl-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: end;
}
.dl-hero h1 { margin: 0 0 16px; font-size: clamp(2.5rem, 5vw, 4.2rem); }
.dl-stamp {
  min-width: 190px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--paper);
  transform: rotate(-1deg);
}
.dl-stamp span {
  display: block;
  font-family: var(--font-mono);
  font-size: .54rem;
  letter-spacing: .12em;
  color: var(--ink-3);
}
.dl-stamp b {
  display: block;
  margin: 3px 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: -.03em;
}
.dl-stamp small { display: block; font-family: var(--font-mono); font-size: .56rem; color: var(--ink-3); }

.dl-status {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: .62rem;
  color: var(--ink-3);
}
.dl-source-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 5px;
  border-radius: 50%;
  background: var(--ok);
}
.dl-source-dot.is-error { background: var(--signal); }

.dl-primary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  min-height: 190px;
  margin-top: 8px;
  padding: clamp(22px, 4vw, 36px);
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--paper);
  box-shadow: var(--shadow);
}
.dl-primary-os { display: flex; align-items: center; gap: 14px; }
.dl-os-badge {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--ink);
  border-radius: 3px;
  background: var(--canvas);
  font-family: var(--font-mono);
  font-size: .58rem;
  letter-spacing: .08em;
}
.dl-primary h2 { margin-bottom: 2px; font-size: 1.5rem; }
.dl-primary-sub { font-family: var(--font-mono); font-size: .64rem; line-height: 1.6; color: var(--ink-3); }
.dl-file { margin-top: 12px; font-family: var(--font-mono); font-size: .68rem; color: var(--ink-2); overflow-wrap: anywhere; }
.dl-file b { color: var(--signal); font-weight: 600; }
.dl-primary-actions { display: grid; gap: 8px; justify-items: end; }
.dl-primary-actions .btn { white-space: nowrap; }
.dl-primary-actions small { max-width: 26ch; font-family: var(--font-mono); font-size: .54rem; line-height: 1.5; color: var(--ink-3); text-align: right; }

.dl-skeleton {
  height: 12px;
  margin: 8px 0;
  border-radius: 2px;
  background: var(--line-2);
  animation: pulse 1.2s ease-in-out infinite;
}
.dl-skeleton.w80 { width: 80%; } .dl-skeleton.w60 { width: 60%; } .dl-skeleton.w40 { width: 40%; }
@keyframes pulse { 50% { opacity: .45; } }

.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 14px; }
.platform-card { padding: 16px; border: 1px solid var(--line); border-radius: 3px; background: var(--paper); }
.platform-card header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-2);
}
.platform-code {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .52rem;
}
.platform-card h2 { margin: 0; font-size: 1rem; }
.platform-count { margin-left: auto; font-family: var(--font-mono); font-size: .54rem; color: var(--ink-3); }
.platform-files { display: grid; gap: 6px; }
.platform-files li { display: grid; gap: 1px; font-size: .74rem; }
.platform-files a {
  font-family: var(--font-mono);
  font-size: .64rem;
  color: var(--ink);
  text-decoration: none;
  overflow-wrap: anywhere;
}
.platform-files a:hover { color: var(--signal); }
.platform-files span { font-family: var(--font-mono); font-size: .54rem; color: var(--ink-3); }
.platform-empty { padding: 6px 0; font-size: .72rem; color: var(--ink-3); }

.dl-empty {
  margin-top: 18px;
  padding: clamp(28px, 5vw, 52px);
  border: 1.5px dashed var(--line);
  border-radius: 5px;
  background: var(--paper);
  text-align: center;
}
.dl-empty .eyebrow { justify-content: center; }
.dl-empty h2 { margin-bottom: 10px; font-size: 1.5rem; }
.dl-empty p { max-width: 56ch; margin-inline: auto; font-size: .9rem; line-height: 1.8; color: var(--ink-2); }
.dl-empty-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 20px; }

.dl-files { margin-top: 34px; }
.dl-section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin-bottom: 14px; }
.dl-section-head h2 { font-size: 1.3rem; }
.dl-section-head span { font-family: var(--font-mono); font-size: .58rem; color: var(--ink-3); }

.file-list { border-top: 1px solid var(--line); }
.file-row {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(120px, .7fr) minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-2);
  font-size: .78rem;
}
.file-name { font-family: var(--font-mono); font-size: .64rem; overflow-wrap: anywhere; }
.file-meta { font-family: var(--font-mono); font-size: .56rem; color: var(--ink-3); }
.file-hash { display: flex; align-items: center; gap: 6px; min-width: 0; }
.file-hash code {
  display: block;
  max-width: 100%;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: .54rem;
  color: var(--ink-3);
  text-overflow: ellipsis;
  white-space: nowrap;
}
.copy-btn {
  flex-shrink: 0;
  padding: 2px 5px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--paper);
  font-family: var(--font-mono);
  font-size: .52rem;
  color: var(--ink-2);
}
.copy-btn:hover { border-color: var(--ink); }
.file-dl {
  font-family: var(--font-mono);
  font-size: .6rem;
  color: var(--cobalt);
  text-decoration: none;
  white-space: nowrap;
}
.file-dl:hover { text-decoration: underline; }

.dl-history { margin-top: 34px; }
.history-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-2);
  text-decoration: none;
}
.history-row:hover .history-v { color: var(--signal); }
.history-v { font-family: var(--font-mono); font-size: .7rem; font-weight: 600; }
.history-d { font-family: var(--font-mono); font-size: .58rem; color: var(--ink-3); }
.history-arrow { margin-left: auto; color: var(--signal); }

.dl-guide { background: var(--sage); border-top: 1px solid var(--sage-2); border-bottom: 1px solid var(--sage-2); }
.dl-guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 28px; }
.dl-guide-col { padding-top: 14px; border-top: 2px solid var(--ink); }
.dl-guide-col h3 { margin-bottom: 8px; }
.dl-guide-col ol { display: grid; gap: 6px; counter-reset: step; }
.dl-guide-col li {
  position: relative;
  padding-left: 20px;
  font-size: .8rem;
  line-height: 1.6;
  color: var(--ink-2);
}
.dl-guide-col li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: .05em;
  font-family: var(--font-mono);
  font-size: .58rem;
  color: var(--signal);
}
.dl-guide-note {
  grid-column: 1 / -1;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: .76rem;
  line-height: 1.7;
  color: var(--ink-2);
}

/* ============================================================
   更新日志页
   ============================================================ */

.cl-hero { padding: clamp(48px, 7vw, 88px) 0 30px; }
.cl-hero h1 { margin-bottom: 16px; font-size: clamp(2.5rem, 5vw, 4.2rem); }

.cl-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}
.cl-side { position: sticky; top: 92px; display: grid; gap: 16px; }
.cl-search label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: .56rem;
  letter-spacing: .08em;
  color: var(--ink-3);
}
.cl-search input {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--paper);
  font-size: .8rem;
  outline: none;
}
.cl-search input:focus { border-color: var(--cobalt); }
.cl-count { font-family: var(--font-mono); font-size: .58rem; color: var(--ink-3); }
.cl-toc { display: grid; gap: 2px; border-left: 1px solid var(--line); }
.cl-toc a {
  display: grid;
  gap: 1px;
  margin-left: -1px;
  padding: 7px 0 7px 12px;
  border-left: 2px solid transparent;
  text-decoration: none;
  transition: border-color .15s ease;
}
.cl-toc a:hover { border-left-color: var(--line); }
.cl-toc a[aria-current="true"] { border-left-color: var(--signal); }
.cl-toc b { font-family: var(--font-mono); font-size: .66rem; font-weight: 600; color: var(--ink); }
.cl-toc span { font-family: var(--font-mono); font-size: .54rem; color: var(--ink-3); }

.cl-entries { display: grid; gap: 28px; min-width: 0; }
.release { padding-top: 18px; border-top: 2px solid var(--ink); scroll-margin-top: 92px; }
.release-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 10px; }
.release-head time { display: block; margin-bottom: 3px; font-family: var(--font-mono); font-size: .6rem; color: var(--signal); }
.release-head h2 { font-size: 1.45rem; letter-spacing: -.03em; }
.release-anchor {
  padding: 4px 6px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: .68rem;
  color: var(--ink-3);
  text-decoration: none;
}
.release-anchor:hover { color: var(--signal); border-color: var(--signal); }
.release-focus {
  margin-bottom: 16px;
  padding: 10px 12px;
  border-left: 3px solid var(--signal);
  background: var(--paper);
  font-size: .86rem;
  line-height: 1.7;
  color: var(--ink-2);
}
.release-focus b {
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .06em;
  color: var(--signal);
}
.release-groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 18px 26px; }
.release-group h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: .58rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.release-group h3::after { content: ""; flex: 1; height: 1px; background: var(--line-2); }
.release-group li {
  position: relative;
  padding: 5px 0 5px 12px;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--ink-2);
}
.release-group li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .95em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--line);
}
.release-group li strong { color: var(--ink); font-weight: 600; }
.release-group li code {
  padding: 1px 4px;
  border: 1px solid var(--line-2);
  border-radius: 2px;
  background: var(--paper);
  font-size: .88em;
}
.release-note {
  margin: 16px 0 0;
  padding: 10px 12px;
  border-left: 2px solid var(--line);
  background: var(--paper);
  font-size: .74rem;
  line-height: 1.7;
  color: var(--ink-3);
}
.known { padding: 18px; border: 1px dashed var(--line); border-radius: 3px; background: var(--paper); }
.known h2 { margin-bottom: 8px; font-size: 1.1rem; }
.known li { position: relative; padding-left: 12px; font-size: .78rem; line-height: 1.7; color: var(--ink-2); }
.known li::before { content: "—"; position: absolute; left: 0; color: var(--signal); }

.cl-error {
  padding: 28px;
  border: 1.5px dashed var(--line);
  border-radius: 4px;
  background: var(--paper);
  text-align: center;
}
.cl-error h2 { margin-bottom: 8px; font-size: 1.3rem; }
.cl-error p { max-width: 56ch; margin: 0 auto 8px; font-size: .84rem; line-height: 1.8; color: var(--ink-2); }
.cl-error code { padding: 2px 5px; border: 1px solid var(--line-2); border-radius: 2px; background: var(--canvas); }
.cl-no-results {
  padding: 28px;
  border: 1px dashed var(--line);
  border-radius: 3px;
  text-align: center;
  font-size: .84rem;
  color: var(--ink-3);
}

/* ============================================================
   关于页
   ============================================================ */

.about-hero { padding: clamp(48px, 7vw, 92px) 0 clamp(40px, 6vw, 72px); }
.about-hero-grid {
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  gap: clamp(32px, 6vw, 80px);
  align-items: center;
}
.about-hero h1 { margin-bottom: 20px; font-size: clamp(2.1rem, 4.3vw, 4rem); }
.about-hero h1 .serif-accent {
  display: block;
  color: var(--signal);
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -.02em;
  white-space: nowrap;
}
.about-easel {
  position: relative;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--paper);
  box-shadow: var(--shadow);
}
.about-easel svg { width: 100%; height: auto; }
.about-easel .easel-tag {
  position: absolute;
  right: 20px;
  top: 20px;
  padding: 3px 6px;
  border: 1px solid var(--line);
  background: var(--canvas);
  font-family: var(--font-mono);
  font-size: .54rem;
  letter-spacing: .1em;
  color: var(--ink-3);
}
.about-easel .easel-caption {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: 8px;
  padding-top: 10px;
  border-top: 1px solid var(--line-2);
  font-family: var(--font-mono);
  font-size: .54rem;
  color: var(--ink-3);
}

.about-section { margin-top: clamp(32px, 5vw, 52px); padding-top: clamp(32px, 5vw, 52px); border-top: 1px solid var(--line); }
.about-two { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(28px, 5vw, 72px); align-items: start; }
.pullquote {
  margin: 0;
  padding-left: 18px;
  border-left: 2px solid var(--signal);
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  line-height: 1.5;
  letter-spacing: -.02em;
  color: var(--ink);
}
.about-copy { display: grid; gap: 14px; max-width: 62ch; font-size: .94rem; line-height: 1.85; color: var(--ink-2); }

.principles { display: grid; border-top: 1px solid var(--line); }
.principle {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 20px;
  align-items: start;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.principle-no { padding-top: 4px; font-family: var(--font-mono); font-size: .64rem; color: var(--signal); }
.principle h3 { font-size: 1.3rem; }
.principle p { max-width: 52ch; font-size: .84rem; line-height: 1.8; color: var(--ink-2); }

.timeline { display: grid; margin-left: 6px; border-left: 1px solid var(--line); }
.timeline li { position: relative; padding: 0 0 24px 26px; }
.timeline li::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--signal);
  border-radius: 50%;
  background: var(--canvas);
}
.timeline time { display: block; margin-bottom: 3px; font-family: var(--font-mono); font-size: .58rem; color: var(--signal); }
.timeline b { display: block; margin-bottom: 3px; font-family: var(--font-display); font-size: 1.02rem; }
.timeline span { font-size: .8rem; line-height: 1.7; color: var(--ink-2); }

.stack { display: grid; gap: 6px; margin-top: 20px; }
.stack-layer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--paper);
}
.stack-layer:nth-child(2) { margin-inline: 14px; background: var(--paper-2); }
.stack-layer:nth-child(3) { margin-inline: 28px; }
.stack-layer b { font-family: var(--font-display); font-size: 1rem; }
.stack-layer span { font-family: var(--font-mono); font-size: .56rem; text-align: right; color: var(--ink-3); }

.legal-box {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--paper);
  font-size: .78rem;
  line-height: 1.85;
  color: var(--ink-2);
}
.legal-box strong { color: var(--ink); }
.about-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

/* ============================================================
   响应式
   ============================================================ */

@media (max-width: 1080px) {
  .site-nav { gap: 18px; }
  .hero-grid { gap: 36px; }
  .station-card { padding: 14px 12px 12px; }
  .station-points li { font-size: .68rem; }
}

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .problem-grid { grid-template-columns: 1fr; }
  .hero-copy { max-width: 640px; }
  .demo { max-width: 640px; }
  .route-track { grid-template-columns: 1fr; gap: 14px; padding-top: 0; }
  .route-line { display: none; }
  .station { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 12px; align-items: start; }
  .station-node { position: static; transform: none; margin-top: 2px; }
  .station-card { min-height: 0; margin-top: 0; }
  .route-return { display: none; }
  .privacy .wrap { grid-template-columns: 1fr; }
  .receipt { max-width: 520px; }
  .updates-grid { grid-template-columns: 1fr; }
  .cl-layout { grid-template-columns: 1fr; }
  .cl-side { position: static; }
  .cl-toc {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 4px;
    border-left: 0;
  }
  .cl-toc a {
    flex-shrink: 0;
    margin-left: 0;
    padding: 6px 10px;
    border: 1px solid var(--line);
    border-left: 1px solid var(--line);
    background: var(--paper);
  }
  .cl-toc a[aria-current="true"] { border-color: var(--signal); }
  .about-hero-grid { grid-template-columns: 1fr; }
  .about-easel { max-width: 560px; }
  .about-two { grid-template-columns: 1fr; }
  .dl-primary { grid-template-columns: 1fr; }
  .dl-primary-actions { justify-items: start; }
  .dl-primary-actions small { text-align: left; }
  .proof-head { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 860px) {
  .site-nav { display: none; }
  .site-nav .gh-link { display: none; }
  .gh-link--m { display: grid; margin-left: auto; }
  .nav-mobile { display: block; margin-left: 0; }
  .wordmark-sub { display: none; }
  .head-inner { min-height: 64px; }
  .dl-hero-grid { grid-template-columns: 1fr; }
  .dl-stamp { justify-self: start; }
}

@media (max-width: 760px) {
  .hero-facts { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .hero-facts b { font-size: .82rem; }
  .hero-facts span { font-size: .7rem; }
  .ledger-row { grid-template-columns: 36px minmax(0, 1fr); gap: 12px; }
  .ledger-meta { grid-column: 2; align-items: flex-start; text-align: left; flex-direction: row; flex-wrap: wrap; }
  .proof-notes { grid-template-columns: repeat(2, 1fr); }
  .dl-grid { grid-template-columns: 1fr; }
  .dl-guide-grid { grid-template-columns: 1fr; gap: 22px; }
  .cta .wrap { align-items: flex-start; flex-direction: column; }
  .cta-meta { text-align: left; }
  .foot-grid { grid-template-columns: 1fr; gap: 32px; }
  .foot-legal { flex-direction: column; gap: 10px; }
  .foot-legal p:last-child { white-space: normal; }
  .file-row { grid-template-columns: minmax(0, 1fr) auto; gap: 4px 12px; }
  .file-meta { grid-column: 1; }
  .file-hash { grid-column: 1 / -1; }
  .file-dl { grid-column: 2; grid-row: 1; }
  .principle { grid-template-columns: 40px minmax(0, 1fr); gap: 12px; }
  .principle p { grid-column: 2; }
}

@media (max-width: 640px) {
  .wrap { padding-inline: 20px; }
  h1 { font-size: clamp(2.35rem, 10.5vw, 3rem); }
  h2 { font-size: clamp(1.7rem, 7.4vw, 2.2rem); }
  .hero { padding-top: 36px; }
  .hero h1 { margin-bottom: 18px; }
  .hero-sub { font-size: .98rem; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-facts { grid-template-columns: 1fr; gap: 0; margin-top: 28px; }
  .hero-facts li { display: flex; align-items: baseline; gap: 10px; padding: 7px 0; border-bottom: 1px dashed var(--line); }
  .hero-facts li:last-child { border-bottom: 0; }
  .hero-facts span { font-size: .72rem; }
  .demo::before { inset: 12px -10px -12px 12px; }
  .demo-top { padding: 0 10px; }
  .demo-title { font-size: .56rem; }
  .demo-badge { display: none; }
  .demo-tab { padding: 8px 4px 7px; }
  .demo-tab b { font-size: .72rem; }
  .demo-tab span { font-size: .5rem; }
  .demo-viewport { min-height: 368px; padding: 12px; }
  .demo-controls { padding: 7px 10px; }
  .demo-note { font-size: .5rem; }
  .section { padding: 56px 0; }
  .station { grid-template-columns: 28px minmax(0, 1fr); gap: 10px; }
  .station-node { width: 28px; height: 28px; font-size: .54rem; }
  .station-card { padding: 14px; }
  .proof-notes { grid-template-columns: 1fr; }
  .app-frame figcaption { align-items: flex-start; flex-direction: column; gap: 4px; }
  .dl-primary { padding: 20px; }
  .dl-primary-os { align-items: flex-start; }
  .dl-os-badge { width: 38px; height: 38px; font-size: .5rem; }
  .dl-primary h2 { font-size: 1.3rem; }
  .dl-empty { padding: 26px 18px; }
  .file-row { font-size: .72rem; }
  .cl-hero h1 { font-size: clamp(2.1rem, 9vw, 2.8rem); }
  .release-groups { grid-template-columns: 1fr; gap: 14px; }
  .release-head h2 { font-size: 1.2rem; }
  .about-hero h1 { font-size: clamp(2.2rem, 9.5vw, 3rem); }
  .receipt { transform: none; }
  .receipt-row { grid-template-columns: 72px 1fr; gap: 8px; }
  .stack-layer { align-items: flex-start; flex-direction: column; gap: 6px; }
  .stack-layer:nth-child(2) { margin-inline: 0; }
  .stack-layer:nth-child(3) { margin-inline: 0; }
  .stack-layer span { text-align: left; }
  .foot-nav { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   减少动效
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .demo-shell.is-playing .demo-progress i { animation: none; transform: scaleX(1); opacity: .35; }
  .demo-panel.is-active { animation: none; }
}