/* ============================================================
   米奇品牌 · 共享样式 /assets/site.css
   轨道导航 + 框景首屏 + 复古出版色体系
   ============================================================ */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body, h1, h2, h3, h4, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }

ul, ol { padding: 0; list-style: none; }

img, picture, svg, video { display: block; max-width: 100%; }

a { color: inherit; }

button, input, select, textarea { font: inherit; color: inherit; }

[hidden] { display: none !important; }

/* ---------- tokens ---------- */
:root {
  --red: #E4002B;
  --red-deep: #A80020;
  --ink: #17181A;
  --sun: #F7C948;
  --cream: #FFF7EA;
  --cream-2: #F1E6D2;
  --mist: #D7E3E9;
  --slate: #5B6670;
  --deep: #2B3742;
  --green: #1F7A5A;
  --glass: rgba(255, 255, 255, 0.12);

  --font-display: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "Roboto Mono", "DIN Alternate", "Menlo", monospace;

  --rail-w: 96px;
  --bar-h: 60px;
  --shell-max: 1240px;
  --pad-x: 64px;
  --section-gap: 96px;
  --radius-cut: 28px;

  --t: 160ms;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);

  --fs-hero: clamp(40px, 6.6vw, 72px);
  --fs-h2: clamp(28px, 4.2vw, 44px);
  --fs-h3: clamp(21px, 2.4vw, 28px);
  --fs-lead: 20px;
}

/* ---------- base ---------- */
body {
  min-height: 100vh;
  padding-top: var(--bar-h);
  background-color: var(--cream);
  background-image:
    repeating-linear-gradient(0deg, rgba(23, 24, 26, 0.017) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(23, 24, 26, 0.013) 0 1px, transparent 1px 4px);
  color: var(--deep);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.18;
  color: var(--ink);
  text-wrap: balance;
}

p { text-wrap: pretty; }

::selection { background: var(--sun); color: var(--ink); }

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

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 220;
  padding: 10px 18px;
  transform: translateY(-200%);
  background: var(--ink);
  color: var(--cream);
  border: 2px solid var(--sun);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform var(--t) var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible { transform: translateY(0); }

/* ---------- 阅读进度 ---------- */
.read-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  background: rgba(23, 24, 26, 0.1);
  z-index: 120;
  pointer-events: none;
}

.read-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: var(--sun);
  transition: transform 90ms linear;
}

/* ---------- 品牌标记 ---------- */
.brand-mark {
  --bm: 38px;
  position: relative;
  display: block;
  width: var(--bm);
  height: calc(var(--bm) * 0.86);
  color: var(--sun);
  flex: none;
}

.brand-mark__ear {
  position: absolute;
  top: 0;
  width: calc(var(--bm) * 0.4);
  height: calc(var(--bm) * 0.4);
  border-radius: 50%;
  background: currentColor;
}

.brand-mark__ear--l { left: 0; }
.brand-mark__ear--r { right: 0; }

.brand-mark__head {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: calc(var(--bm) * 0.72);
  height: calc(var(--bm) * 0.72);
  border-radius: 50%;
  background: currentColor;
}

.brand-mark--sm { --bm: 26px; }
.brand-mark--light { color: var(--sun); }

/* ---------- 桌面轨道导航 ---------- */
.rail {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--rail-w);
  z-index: 100;
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 22px 0 18px;
  background: var(--ink);
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--cream);
}

.rail__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-bottom: 14px;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  width: 62px;
}

.rail__wordmark {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.2em;
  writing-mode: vertical-rl;
  color: var(--cream);
}

.rail__nav {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  width: 100%;
  padding-block: 4px;
  scrollbar-width: none;
}

.rail__nav::-webkit-scrollbar { display: none; }

.rail__link {
  width: 76px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 9px 0;
  border-radius: 0 16px 16px 0;
  color: var(--mist);
  text-decoration: none;
  transition: background var(--t) var(--ease), color var(--t) var(--ease);
}

.rail__glyph {
  width: 13px;
  height: 13px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
  flex: none;
}

.rail__link:nth-child(2) .rail__glyph { border-radius: 50% 50% 0 50%; }
.rail__link:nth-child(3) .rail__glyph { border-radius: 0; }
.rail__link:nth-child(4) .rail__glyph { border-radius: 50% 0 50% 0; }
.rail__link:nth-child(5) .rail__glyph { border-radius: 6px 6px 0 0; }
.rail__link:nth-child(6) .rail__glyph { border-radius: 50% 0 0 50%; }

.rail__label {
  font-size: 10px;
  line-height: 1.1;
  letter-spacing: 0.08em;
  writing-mode: vertical-rl;
}

.rail__link:hover {
  background: rgba(255, 255, 255, 0.09);
  color: var(--cream);
}

.rail__link[aria-current="page"] {
  background: var(--red);
  color: #fff;
}

.rail__foot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  width: 76px;
}

.rail__cta {
  display: block;
  width: 66px;
  padding: 14px 0;
  background: var(--red);
  color: #fff;
  text-align: center;
  text-decoration: none;
  border-radius: 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  writing-mode: vertical-rl;
  line-height: 1.1;
  transition: background var(--t) var(--ease), transform var(--t) var(--ease);
}

.rail__cta:hover {
  background: var(--red-deep);
  transform: translateY(-2px);
}

.to-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  width: 56px;
  padding: 9px 0;
  background: transparent;
  color: var(--mist);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 12px;
  font-size: 10px;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: background var(--t) var(--ease), color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.to-top:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--cream);
  border-color: var(--sun);
}

.to-top__arrow {
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-bottom: 7px solid currentColor;
}

/* ---------- 移动顶栏 ---------- */
.mobile-bar {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--bar-h);
  z-index: 110;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 18px;
  background: var(--cream);
  border-bottom: 2px solid var(--ink);
}

.mobile-bar__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

.mobile-bar__brand .brand-mark { color: var(--red); }

.mobile-bar__name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  background: var(--ink);
  color: var(--cream);
  border: 2px solid var(--ink);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--t) var(--ease), color var(--t) var(--ease);
}

.nav-toggle:hover { background: var(--deep); }

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 16px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}

.nav-toggle__bars span:last-child { width: 66%; }

/* ---------- 抽屉 ---------- */
.drawer {
  position: fixed;
  inset: 0 0 0 auto;
  z-index: 150;
  width: min(88vw, 340px);
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 22px 22px calc(24px + env(safe-area-inset-bottom));
  background: var(--ink);
  color: var(--cream);
  overflow-y: auto;
  transform: translateX(103%);
  visibility: hidden;
  transition: transform 220ms var(--ease), visibility 220ms var(--ease);
}

.drawer[data-open] {
  transform: translateX(0);
  visibility: visible;
}

.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.drawer__title {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.22em;
  color: var(--sun);
}

.drawer__close {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 50%;
  background: transparent;
  color: var(--cream);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  transition: background var(--t) var(--ease), border-color var(--t) var(--ease);
}

.drawer__close:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--sun);
}

.drawer__nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.drawer__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 12px 12px 10px;
  border-radius: 0 14px 14px 0;
  color: var(--cream-2);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  transition: background var(--t) var(--ease), color var(--t) var(--ease);
}

.drawer__link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.drawer__link[aria-current="page"] {
  background: var(--red);
  color: #fff;
}

.drawer__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--sun);
}

.drawer__link[aria-current="page"] .drawer__num { color: #fff; }

.drawer__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.drawer__cta .btn { flex: 1 1 auto; justify-content: center; }

.drawer__cta .btn--ghost {
  color: var(--cream-2);
  border-color: rgba(255, 255, 255, 0.42);
}

.drawer__cta .btn--ghost:hover {
  background: var(--cream);
  color: var(--ink);
  border-color: var(--cream);
}

.drawer__note {
  margin-top: auto;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.drawer-scrim {
  position: fixed;
  inset: 0;
  z-index: 140;
  background: rgba(23, 24, 26, 0.45);
  opacity: 0;
  visibility: hidden;
  transition: opacity 220ms var(--ease), visibility 220ms var(--ease);
}

.drawer-scrim[data-open] {
  opacity: 1;
  visibility: visible;
}

body.is-nav-open { overflow: hidden; }

/* ---------- 拇指热区条 ---------- */
.thumb-bar {
  position: fixed;
  inset: auto 0 0 0;
  z-index: 115;
  display: none;
  background: var(--ink);
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding-bottom: env(safe-area-inset-bottom);
}

.thumb-bar__item {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 10px 4px;
  color: var(--mist);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 0.1em;
  transition: background var(--t) var(--ease), color var(--t) var(--ease);
}

.thumb-bar__item--primary { color: #fff; background: var(--red); }

.thumb-bar__item:hover { color: #fff; background: rgba(255, 255, 255, 0.1); }

.thumb-bar__item--primary:hover { background: var(--red-deep); }

.thumb-bar__glyph {
  width: 12px;
  height: 12px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
}

.thumb-bar__item:nth-child(2) .thumb-bar__glyph { border-radius: 50% 50% 0 50%; }
.thumb-bar__item--primary .thumb-bar__glyph { border-radius: 0; }

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: var(--section-gap);
  background: var(--ink);
  color: var(--cream-2);
  padding: 64px 0 26px;
  font-size: 15px;
  line-height: 1.75;
}

.site-footer__inner {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: 20px;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.foot-col { min-width: 0; }

.foot-brand {
  margin-top: 16px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--cream);
  letter-spacing: 0.02em;
}

.foot-claim {
  margin-top: 4px;
  font-size: 13px;
  letter-spacing: 0.24em;
  color: var(--sun);
}

.foot-desc {
  margin-top: 14px;
  max-width: 30ch;
  color: var(--mist);
  font-size: 14px;
}

.foot-title {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.22em;
  color: var(--sun);
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.foot-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.foot-list--legal {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.foot-link {
  color: var(--cream-2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.foot-link:hover {
  color: #fff;
  border-bottom-color: var(--sun);
}

.foot-item {
  display: flex;
  gap: 10px;
  align-items: baseline;
  color: var(--cream-2);
  font-size: 14px;
}

.foot-item__key {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

.foot-mail,
.foot-tel {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cream);
  word-break: break-all;
}

.foot-note {
  margin-top: 16px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--slate);
  max-width: 34ch;
}

.foot-rhythm {
  color: var(--mist);
  font-size: 14px;
}

.foot-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  margin-top: 44px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--slate);
}

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 13px 26px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--t) var(--ease), color var(--t) var(--ease), border-color var(--t) var(--ease), transform var(--t) var(--ease);
}

.btn:hover { transform: translateY(-2px); }

.btn--primary {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}

.btn--primary:hover {
  background: var(--red-deep);
  border-color: var(--red-deep);
}

.btn--ghost { background: transparent; color: var(--ink); }

.btn--ghost:hover { background: var(--ink); color: var(--cream); }

.btn--sun {
  background: var(--sun);
  border-color: var(--sun);
  color: var(--ink);
}

.btn--sun:hover { background: #ffd75e; border-color: #ffd75e; }

/* ---------- 版心与章节 ---------- */
.container {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: 20px;
}

.section { padding-block: calc(var(--section-gap) * 0.62); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 20px;
  margin-bottom: 34px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--ink);
}

.eyebrow {
  display: inline-block;
  padding: 3px 10px;
  background: var(--sun);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  border-radius: 3px;
}

.lead {
  font-size: var(--fs-lead);
  line-height: 1.7;
  color: var(--deep);
  max-width: 34em;
}

.tag {
  display: inline-block;
  padding: 2px 9px;
  border: 1px solid var(--slate);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.grid {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
}

/* ---------- 框景 ---------- */
.frame {
  position: relative;
  border: 2px solid var(--ink);
  outline: 1px solid var(--slate);
  outline-offset: -12px;
  border-top-right-radius: 72px;
  background: var(--cream);
  padding: clamp(26px, 4.4vw, 60px);
}

.frame__stamp {
  position: absolute;
  top: -2px;
  right: -2px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px 7px 22px;
  background: var(--sun);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  border-top-right-radius: 70px;
  border-bottom-left-radius: 14px;
}

/* ---------- 卡片 ---------- */
.card {
  position: relative;
  display: block;
  padding: 26px;
  background: var(--cream-2);
  border: 1px solid var(--slate);
  border-radius: 0 0 0 var(--radius-cut);
  color: inherit;
  text-decoration: none;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--ink);
  box-shadow: 0 12px 0 -8px rgba(23, 24, 26, 0.22);
}

.card--offset { margin-top: 0; }

.card--glass {
  background: var(--glass);
  border: 1px solid rgba(255, 255, 255, 0.38);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--cream);
}

.glass-panel {
  background: var(--glass);
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: 0 0 0 var(--radius-cut);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 24px;
}

/* ---------- 数字与状态 ---------- */
.num {
  display: inline-block;
  padding: 2px 10px;
  background: var(--sun);
  color: var(--ink);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 1.6em;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.num--outline {
  background: transparent;
  border: 1px solid var(--ink);
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  margin-right: 8px;
  vertical-align: middle;
}

/* ---------- 时间线 ---------- */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
  border-left: 2px solid var(--cream-2);
}

.timeline__item {
  position: relative;
  padding-bottom: 28px;
}

.timeline__item:last-child { padding-bottom: 0; }

.timeline__item::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 12px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--sun);
  border: 2px solid var(--ink);
}

/* ---------- 图片容器 ---------- */
.media {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--mist);
  border: 2px solid var(--ink);
  border-top-left-radius: 48px;
}

.media img,
.media picture,
.media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--wide { aspect-ratio: 16 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }

.media__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.breadcrumb a {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid var(--mist);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.breadcrumb a:hover {
  color: var(--ink);
  border-bottom-color: var(--red);
}

.breadcrumb__sep { color: var(--mist); }

/* ---------- 显现动画 ---------- */
[data-reveal] {
  transition: opacity 260ms var(--ease), transform 260ms var(--ease);
}

[data-reveal].is-pending {
  opacity: 0;
  transform: translateY(12px);
}

[data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 平板 ---------- */
@media (min-width: 768px) {
  .container { padding-inline: 32px; }
  .site-footer__inner { padding-inline: 32px; }
  .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; }
  .section { padding-block: var(--section-gap); }
  .grid { gap: 32px; }
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  body {
    padding-top: 0;
    padding-left: var(--rail-w);
  }

  .rail { display: flex; }

  .mobile-bar,
  .drawer,
  .drawer-scrim,
  .thumb-bar { display: none !important; }

  .site-footer {
    margin-left: calc(var(--rail-w) * -1);
    padding-left: var(--rail-w);
    padding-top: 76px;
  }

  .container {
    padding-inline: var(--pad-x);
    padding-left: calc(var(--pad-x) + 8px);
  }

  .site-footer__inner { padding-inline: var(--pad-x); }

  .foot-grid {
    grid-template-columns: 1.45fr 0.9fr 1.35fr 1.1fr;
    gap: 48px;
  }

  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .span-5 { grid-column: span 5; }
  .span-7 { grid-column: span 7; }
  .span-4 { grid-column: span 4; }
  .span-8 { grid-column: span 8; }
}

/* ---------- 手机 ---------- */
@media (max-width: 767px) {
  :root { --section-gap: 64px; }

  body { padding-bottom: 74px; }

  .thumb-bar { display: flex; }

  .site-footer { padding-top: 52px; }

  .lead { font-size: 18px; }

  .card { padding: 20px; }

  .frame { outline-offset: -8px; border-top-right-radius: 48px; }

  .frame__stamp {
    font-size: 10px;
    padding: 6px 12px 6px 16px;
    border-top-right-radius: 46px;
  }
}

/* ---------- 低高度桌面收敛轨道 ---------- */
@media (min-width: 1024px) and (max-height: 780px) {
  .rail { gap: 10px; padding: 16px 0 14px; }
  .rail__brand { gap: 6px; padding-bottom: 10px; }
  .rail__link { padding: 6px 0; gap: 4px; }
  .rail__label { font-size: 9px; letter-spacing: 0.04em; }
  .rail__cta { padding: 9px 0; font-size: 11px; }
  .rail__foot { gap: 6px; padding-top: 8px; }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal].is-pending {
    opacity: 1;
    transform: none;
  }

  .read-progress__bar { transition: none; }

  .card:hover,
  .btn:hover,
  .rail__cta:hover { transform: none; }
}