/* ==========================================================================
   大发体育方 · 共享样式 /assets/site.css
   骨架：极简文字建筑 + 计时牌刊头 + 分栏赛况目录
   ========================================================================== */

/* 1. 变量 */
:root {
  --ink-900: #0B1526;
  --ink-700: #16263F;
  --ink-500: #2C4160;
  --red-500: #E12B32;
  --red-700: #A8121B;
  --cyan-400: #4FE3D0;
  --cyan-deep: #21897C;
  --green-500: #3FA36A;
  --paper-100: #F4F1EC;
  --paper-200: #E6E2DA;
  --ink-text: #101820;
  --muted: #5A6472;

  --font-display: "Saira Condensed", "Oswald", "Arial Narrow", "PingFang SC", "Microsoft YaHei", Impact, sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", Georgia, serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --fs-12: 12px;
  --fs-13: 13px;
  --fs-15: 15px;
  --fs-17: 17px;
  --fs-21: 21px;
  --fs-28: 28px;
  --fs-40: 40px;
  --fs-64: 64px;
  --fs-96: 96px;

  --pad: clamp(16px, 4vw, 40px);
  --wrap: 1240px;
  --measure: 34em;
  --paper-line: rgba(16, 24, 32, 0.14);
  --dark-line: rgba(44, 65, 96, 0.75);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* 2. Reset 与基础 */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 150px;
}

body {
  margin: 0;
  background: var(--paper-100);
  color: var(--ink-text);
  font-family: var(--font-body);
  font-size: var(--fs-17);
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main { display: block; }

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

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

button { font: inherit; color: inherit; }

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }

hr { border: 0; height: 1px; background: var(--paper-line); margin: 0; }

::selection { background: var(--red-500); color: #fff; }

:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 3px;
  border-radius: 2px;
}

#main-content:focus { outline: none; }
#main-content { scroll-margin-top: 150px; }

/* 3. 排版工具 */
.display, .h1, .h2, .h3 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.04;
  font-stretch: condensed;
}

.display { font-size: clamp(40px, 7.4vw, 96px); line-height: 0.94; }
.h1 { font-size: clamp(32px, 5vw, 64px); }
.h2 { font-size: clamp(26px, 3.4vw, 40px); line-height: 1.1; }
.h3 { font-size: var(--fs-21); line-height: 1.28; letter-spacing: 0.01em; font-weight: 700; }

.serif { font-family: var(--font-serif); font-weight: 600; letter-spacing: 0.04em; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.6;
}

.lede {
  font-size: clamp(var(--fs-17), 1.6vw, var(--fs-21));
  line-height: 1.65;
  max-width: var(--measure);
}

.measure { max-width: var(--measure); }
.muted { color: var(--muted); }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.94em;
  letter-spacing: -0.01em;
}

.data {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}

.data--xl {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(40px, 6.4vw, 96px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--cyan-400);
}

/* 4. 版心与分区 */
.wrap {
  width: min(100% - (var(--pad) * 2), var(--wrap));
  margin-inline: auto;
}

.section { padding-block: clamp(40px, 6vw, 88px); }
.section--dark { background: var(--ink-900); color: var(--paper-100); }
.section--ink { background: var(--ink-700); color: var(--paper-100); }
.section--paper { background: var(--paper-100); color: var(--ink-text); }
.section--rule { border-top: 1px solid var(--paper-line); }
.section--dark.section--rule, .section--ink.section--rule { border-top-color: var(--dark-line); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 24px;
  padding-bottom: 14px;
  margin-bottom: clamp(18px, 2.6vw, 34px);
  border-bottom: 1px solid var(--paper-line);
}

.section--dark .section__head,
.section--ink .section__head,
.panel--dark .section__head { border-bottom-color: var(--dark-line); }

.grid { display: grid; gap: clamp(20px, 3vw, 40px); }
.grid--5-7 { grid-template-columns: 5fr 7fr; }
.grid--7-5 { grid-template-columns: 7fr 5fr; }
.grid--4-5-3 { grid-template-columns: 4fr 5fr 3fr; }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.stack { display: grid; gap: 16px; }

.timing-rule { height: 1px; background: var(--paper-line); border: 0; margin: 0; }
.section--dark .timing-rule, .section--ink .timing-rule { background: var(--dark-line); }

.tick-strip {
  height: 10px;
  background-image: repeating-linear-gradient(90deg, var(--ink-500) 0 1px, transparent 1px 12px);
  opacity: 0.7;
}

/* 5. 头部 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ink-900);
  color: var(--paper-100);
  border-bottom: 1px solid var(--ink-500);
}

.skip-link {
  position: fixed;
  left: 50%;
  top: 0;
  z-index: 120;
  transform: translate(-50%, -160%);
  background: var(--cyan-400);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.06em;
  padding: 10px 18px;
  border-radius: 0 0 2px 2px;
  text-decoration: none;
  transition: transform 0.18s var(--ease);
}

.skip-link:focus { transform: translate(-50%, 0); }

.timing-bar {
  height: 3px;
  background: var(--ink-700);
  overflow: hidden;
}

.timing-bar__fill {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--red-700) 0%, var(--red-500) 62%, var(--cyan-400) 100%);
  transition: transform 0.16s linear;
}

.masthead { padding-block: 16px 12px; }

.masthead__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
}

.masthead__status {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-self: start;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: rgba(244, 241, 236, 0.58);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green-500);
  box-shadow: 0 0 0 3px rgba(63, 163, 106, 0.18);
  animation: status-pulse 2.6s var(--ease) infinite;
}

@keyframes status-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(63, 163, 106, 0.18); }
  50% { box-shadow: 0 0 0 6px rgba(63, 163, 106, 0.05); }
}

.masthead__brand {
  justify-self: center;
  text-align: center;
  display: grid;
  gap: 4px;
  justify-items: center;
}

.masthead__brand-link {
  display: grid;
  justify-items: center;
  gap: 3px;
  text-decoration: none;
  color: inherit;
}

.masthead__brand-cn {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(22px, 2.6vw, 32px);
  line-height: 1.2;
  letter-spacing: 0.16em;
  text-indent: 0.16em;
  color: var(--paper-100);
}

.masthead__brand-en {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.44em;
  text-indent: 0.44em;
  color: var(--red-500);
}

.masthead__tagline {
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  color: rgba(244, 241, 236, 0.5);
  transition: opacity 0.18s var(--ease);
}

.masthead__utility {
  justify-self: end;
  position: relative;
  text-align: right;
}

.masthead__copy {
  display: grid;
  justify-items: end;
  gap: 2px;
  background: none;
  border: 1px solid var(--ink-500);
  border-radius: 2px;
  padding: 6px 10px;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.masthead__copy:hover { border-color: var(--red-500); background: rgba(225, 43, 50, 0.1); }

.masthead__copy-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: rgba(244, 241, 236, 0.48);
}

.masthead__copy-value {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--paper-100);
  tab-size: 4;
}

.masthead__copy-status {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  z-index: 3;
  margin: 0;
  padding: 3px 8px;
  background: var(--ink-700);
  border: 1px solid var(--ink-500);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan-400);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s var(--ease);
}

.masthead__copy-status:not(:empty) { opacity: 1; }

.nav-bar {
  position: relative;
  border-top: 1px solid var(--ink-500);
  background: var(--ink-900);
}

.nav-bar__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
}

.primary-nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.primary-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(12px, 2.4vw, 34px);
  list-style: none;
  margin: 0;
  padding: 0;
}

.primary-nav__list a {
  position: relative;
  display: inline-block;
  padding: 14px 2px;
  font-size: var(--fs-15);
  color: rgba(244, 241, 236, 0.68);
  text-decoration: none;
  transition: color 0.16s var(--ease);
}

.primary-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 6px;
  height: 2px;
  background: var(--red-500);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.18s var(--ease);
}

.primary-nav__list a:hover { color: #fff; }
.primary-nav__list a:hover::after { transform: scaleX(1); }

.primary-nav__list a[aria-current="page"] { color: #fff; font-weight: 500; }
.primary-nav__list a[aria-current="page"]::after { transform: scaleX(1); }

.primary-nav__cta {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid rgba(79, 227, 208, 0.42);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--cyan-400);
  text-decoration: none;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.primary-nav__cta::after { content: "→"; font-family: var(--font-body); }
.primary-nav__cta:hover { background: rgba(79, 227, 208, 0.14); border-color: var(--cyan-400); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: none;
  border: 1px solid var(--ink-500);
  border-radius: 2px;
  color: var(--paper-100);
  font-size: var(--fs-13);
  letter-spacing: 0.08em;
  cursor: pointer;
}

.nav-toggle:hover { border-color: var(--cyan-400); }

.nav-toggle__bars { display: grid; gap: 4px; width: 18px; }

.nav-toggle__bar {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}

.site-header[data-open] .nav-toggle__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.site-header[data-compact] .masthead { padding-block: 8px 6px; }
.site-header[data-compact] .masthead__brand-cn { font-size: 20px; letter-spacing: 0.1em; }
.site-header[data-compact] .masthead__tagline { opacity: 0; }
.site-header[data-compact] .masthead__status,
.site-header[data-compact] .masthead__utility {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s var(--ease), visibility 0.18s var(--ease);
}
.site-header[data-compact] .primary-nav__list a { padding-block: 10px; }

/* 6. 页脚 */
.site-footer {
  position: relative;
  background: var(--ink-900);
  color: rgba(244, 241, 236, 0.78);
  border-top: 1px solid var(--ink-500);
}

.site-footer__rule {
  height: 2px;
  background: linear-gradient(90deg, var(--red-500) 0 14%, var(--ink-500) 14% 100%);
}

.site-footer__inner { padding-block: clamp(32px, 4.6vw, 56px) 22px; }

.site-footer__grid {
  display: grid;
  grid-template-columns: 4fr 5fr 3fr;
  gap: clamp(24px, 4vw, 56px);
  padding-bottom: clamp(22px, 3vw, 34px);
  border-bottom: 1px solid var(--dark-line);
}

.site-footer__brand { display: grid; align-content: start; gap: 0; }

.site-footer__mark {
  display: inline-block;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 24px;
  letter-spacing: 0.14em;
  color: var(--paper-100);
  text-decoration: none;
}

.site-footer__mark:hover { color: var(--red-500); }

.site-footer__tagline {
  margin-top: 8px;
  font-size: var(--fs-13);
  letter-spacing: 0.12em;
  color: rgba(244, 241, 236, 0.5);
}

.site-footer__signature {
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--red-500);
}

.site-footer__nav { display: block; }

.site-footer__heading {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(244, 241, 236, 0.42);
}

.footer-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.footer-nav a {
  display: inline-block;
  font-size: var(--fs-15);
  color: rgba(244, 241, 236, 0.78);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.footer-nav a:hover { color: #fff; border-bottom-color: var(--red-500); }

.contact-list { margin: 0; display: grid; gap: 10px; }

.contact-list__row {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.contact-list dt {
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: rgba(244, 241, 236, 0.42);
}

.contact-list dd {
  font-size: var(--fs-13);
  line-height: 1.65;
  color: rgba(244, 241, 236, 0.82);
  overflow-wrap: anywhere;
}

.site-footer__note {
  margin-top: 14px;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: rgba(244, 241, 236, 0.42);
}

.site-footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-top: 20px;
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.05em;
  color: rgba(244, 241, 236, 0.45);
}

.site-footer__legal a {
  text-decoration: none;
  color: rgba(244, 241, 236, 0.74);
  border-bottom: 1px solid rgba(225, 43, 50, 0.45);
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.site-footer__legal a:hover { color: #fff; border-bottom-color: var(--red-500); }

.site-footer__icp {
  padding-left: 10px;
  border-left: 1px solid var(--dark-line);
  letter-spacing: 0.06em;
}

.site-footer__copy {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(244, 241, 236, 0.38);
}

/* 7. 按钮与链接 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: var(--fs-15);
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.btn--primary {
  background: var(--red-500);
  border-color: var(--red-500);
  color: #fff;
}

.btn--primary:hover { background: var(--red-700); border-color: var(--red-700); }

.btn--ghost {
  background: transparent;
  border-color: currentColor;
  color: inherit;
}

.btn--ghost:hover { background: rgba(225, 43, 50, 0.1); border-color: var(--red-500); color: var(--red-500); }

.section--dark .btn--ghost:hover,
.section--ink .btn--ghost:hover { color: var(--cyan-400); border-color: var(--cyan-400); background: rgba(79, 227, 208, 0.1); }

.btn__arrow { font-family: var(--font-mono); font-size: 0.92em; }

/* 8. 状态与数据标记 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  line-height: 1.6;
  text-transform: uppercase;
  color: var(--muted);
}

.tag--live { color: var(--green-500); }
.tag--data { color: var(--cyan-deep); }
.tag--key { color: var(--red-500); }

.section--dark .tag--data,
.section--ink .tag--data,
.panel--dark .tag--data { color: var(--cyan-400); }

/* 9. 面板 */
.panel {
  background: #fff;
  border: 1px solid var(--paper-200);
  border-radius: 2px;
  padding: clamp(18px, 2.4vw, 28px);
}

.panel--dark {
  background: var(--ink-700);
  border-color: var(--ink-500);
  color: var(--paper-100);
}

/* 10. 层叠目录与时间线 */
.index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: idx;
}

.index-list > li {
  counter-increment: idx;
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) auto;
  gap: 8px 16px;
  align-items: baseline;
  padding: 16px 0;
  border-top: 1px solid var(--paper-line);
}

.index-list > li:last-child { border-bottom: 1px solid var(--paper-line); }

.index-list > li::before {
  content: counter(idx, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--red-500);
}

.section--dark .index-list > li,
.section--ink .index-list > li { border-top-color: var(--dark-line); }
.section--dark .index-list > li:last-child,
.section--ink .index-list > li:last-child { border-bottom-color: var(--dark-line); }

.timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 18px;
  border-left: 1px solid var(--ink-500);
}

.timeline__item { position: relative; padding-bottom: 22px; }

.timeline__item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 0.62em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--red-500);
  box-shadow: 0 0 0 3px rgba(225, 43, 50, 0.16);
}

.timeline__time {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--muted);
}

.section--dark .timeline__time,
.section--ink .timeline__time { color: rgba(244, 241, 236, 0.5); }

/* 11. 标签页 */
.tabs { --tabs-line: var(--paper-line); }

.tabs__list {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--tabs-line);
  overflow-x: auto;
  scrollbar-width: thin;
}

.tabs__tab {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 12px 16px;
  font-size: var(--fs-15);
  color: var(--muted);
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.tabs__tab:hover { color: var(--ink-text); }

.tabs__tab[aria-selected="true"] {
  color: var(--ink-text);
  font-weight: 500;
  border-bottom-color: var(--red-500);
}

.tabs__panel { padding-top: 20px; }
.tabs__panel[hidden] { display: none; }

.section--dark .tabs, .section--ink .tabs, .panel--dark .tabs { --tabs-line: var(--dark-line); }
.section--dark .tabs__tab, .section--ink .tabs__tab, .panel--dark .tabs__tab { color: rgba(244, 241, 236, 0.6); }
.section--dark .tabs__tab:hover, .section--ink .tabs__tab:hover, .panel--dark .tabs__tab:hover,
.section--dark .tabs__tab[aria-selected="true"], .section--ink .tabs__tab[aria-selected="true"], .panel--dark .tabs__tab[aria-selected="true"] { color: #fff; }

/* 12. 横向卡片行 */
.snap-row {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(250px, 1fr);
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 12px;
  scrollbar-color: var(--ink-500) transparent;
}

.snap-row > * { scroll-snap-align: start; }

/* 13. 图片容器 */
.figure { display: grid; gap: 10px; margin: 0; }

.figure__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--paper-200);
  border-radius: 2px;
  background-color: var(--ink-700);
  background-image:
    repeating-linear-gradient(90deg, rgba(44, 65, 96, 0.55) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg, rgba(44, 65, 96, 0.45) 0 1px, transparent 1px 48px);
}

.section--dark .figure__frame,
.section--ink .figure__frame,
.panel--dark .figure__frame { border-color: var(--ink-500); }

.figure__frame img,
.figure__frame svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure__caption {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--muted);
}

.section--dark .figure__caption,
.section--ink .figure__caption,
.panel--dark .figure__caption { color: rgba(244, 241, 236, 0.5); }

.figure--wide .figure__frame { aspect-ratio: 21 / 9; }
.figure--tall .figure__frame { aspect-ratio: 4 / 5; }
.figure--square .figure__frame { aspect-ratio: 1 / 1; }

/* 14. 面包屑 */
.breadcrumbs {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--muted);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(44, 65, 96, 0.55);
}

.breadcrumbs a {
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.breadcrumbs a:hover { color: var(--red-500); border-bottom-color: var(--red-500); }

.section--dark .breadcrumbs,
.section--ink .breadcrumbs { color: rgba(244, 241, 236, 0.55); }

/* 15. 显现 */
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease);
}

.has-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* 16. 响应式：平板 */
@media (max-width: 1040px) {
  .primary-nav__cta { display: none; }
  .primary-nav__list { gap: 16px; }
  .primary-nav__list a { padding-block: 12px; font-size: 14px; }
}

@media (max-width: 900px) {
  .grid--5-7,
  .grid--7-5,
  .grid--4-5-3,
  .grid--3 { grid-template-columns: 1fr; }

  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .site-footer__brand { grid-column: 1 / -1; }
}

/* 17. 响应式：手机 / 折叠导航 */
@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }

  .nav-bar__inner { justify-content: flex-start; min-height: 56px; }

  .primary-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 5;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    padding: 0 var(--pad);
    background: var(--ink-900);
    border-top: 1px solid transparent;
    transition: max-height 0.24s var(--ease), visibility 0.24s var(--ease), padding 0.24s var(--ease);
  }

  .site-header[data-open] .primary-nav {
    max-height: min(78vh, 560px);
    overflow-y: auto;
    visibility: visible;
    padding: 10px var(--pad) 22px;
    border-top-color: var(--ink-500);
    box-shadow: 0 18px 30px rgba(3, 8, 16, 0.55);
  }

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  .primary-nav__list a {
    display: block;
    padding: 14px 12px;
    font-size: var(--fs-17);
    border-bottom: 1px solid var(--dark-line);
  }

  .primary-nav__list a::after { display: none; }

  .primary-nav__list a[aria-current="page"] { color: #fff; }

  .primary-nav__list a[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 3px;
    height: 16px;
    background: var(--red-500);
    transform: translateY(-50%);
  }

  .primary-nav__cta {
    position: static;
    display: inline-flex;
    transform: none;
    align-self: flex-start;
    margin-top: 16px;
  }

  .masthead__inner { gap: 10px; }
  .masthead__status-text { display: none; }
  .masthead__tagline { font-size: 11px; letter-spacing: 0.1em; }
  .site-header[data-compact] .masthead__brand-cn { font-size: 20px; }
}

@media (max-width: 640px) {
  .masthead__copy { display: none; }
  .site-footer__grid { grid-template-columns: 1fr; }
  .site-footer__brand { grid-column: auto; }
  .site-footer__base { align-items: flex-start; }
  .index-list > li { grid-template-columns: 40px minmax(0, 1fr); }
  .contact-list__row { grid-template-columns: 56px minmax(0, 1fr); }
}

/* 18. 动效偏好 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .has-js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .timing-bar__fill { transition: none; }
  .status-dot { animation: none; }
}