/* ============================================================
   OB体育入口 · 共享外壳样式表  /assets/site.css
   深空蓝暗场 + 电光橙节奏 + 荧光绿数据信号
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, figcaption, blockquote, dl, dd { margin: 0; padding: 0; }

ul, ol { list-style: none; }

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

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

a { color: inherit; text-decoration: none; }

table { border-collapse: collapse; width: 100%; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink:        #050E24;
  --ink-2:      #0B1B3C;
  --orange:     #FF6A1A;
  --orange-2:   #FF8F4D;
  --green:      #35F0A6;
  --ice:        #7FB0FF;
  --steel:      #8FA1C0;
  --ivory:      #F6F1E7;
  --cloud:      #E9F0FB;
  --glass:      rgba(255, 255, 255, 0.07);
  --red:        #FF4D5E;

  --line:       rgba(127, 176, 255, 0.16);
  --line-2:     rgba(127, 176, 255, 0.30);

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-rail:    "Barlow Condensed", "Oswald", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body:    "Noto Sans SC", "Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-numeric: "JetBrains Mono", "Roboto Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --rail:       88px;
  --gutter:     clamp(16px, 4vw, 48px);
  --content:    1280px;
  --maxw:       1440px;

  --r-sm:       8px;
  --r-md:       14px;
  --r-lg:       20px;
  --r-pill:     999px;

  --ease:       cubic-bezier(0.22, 0.61, 0.36, 1);
  --head-h:     140px;
}

/* ---------- 3. Base ---------- */
body {
  background: var(--ink);
  color: var(--cloud);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  padding-left: var(--rail);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

main { display: block; padding-top: var(--head-h); }

#main-content { scroll-margin-top: calc(var(--head-h) + 16px); }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; }

::selection { background: var(--orange); color: #0A0F1F; }

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

/* ---------- 4. Skip link ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 300;
  transform: translateY(-180%);
  padding: 10px 20px;
  border-radius: var(--r-sm);
  background: var(--orange);
  color: #0A0F1F;
  font-family: var(--font-rail);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  transition: transform 0.22s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 5. 品牌轨道 ---------- */
.rail {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--rail);
  z-index: 95;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 0 20px;
  background: linear-gradient(180deg, #071432 0%, var(--ink) 100%);
  border-right: 1px solid var(--line);
}

.rail__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-top: 2px;
}

.rail__mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  font-family: var(--font-rail);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #0A0F1F;
  background: linear-gradient(150deg, var(--orange), var(--orange-2));
  clip-path: polygon(14% 0, 100% 0, 86% 100%, 0 100%);
}

.rail__wordmark {
  writing-mode: vertical-rl;
  font-family: var(--font-rail);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--steel);
}

.rail__chapters {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: auto 0;
}

.rail__chapter {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--steel);
  font-family: var(--font-rail);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease),
              background 0.18s var(--ease), transform 0.18s var(--ease);
}
.rail__chapter:hover {
  color: var(--ice);
  border-color: var(--line-2);
  transform: translateX(2px);
}
.rail__chapter[aria-current="page"] {
  background: var(--orange);
  border-color: var(--orange);
  color: #0A0F1F;
}
.rail__chapter-num { line-height: 1; }

.rail__progress {
  position: relative;
  flex: 0 0 auto;
  width: 2px;
  height: clamp(64px, 14vh, 140px);
  margin: 14px 0;
  border-radius: 2px;
  background: var(--line);
  overflow: hidden;
}
.rail__progress-fill {
  position: absolute;
  inset: 0 0 auto 0;
  height: 0%;
  background: linear-gradient(180deg, var(--orange), var(--green));
  transition: height 0.12s linear;
}

.rail__foot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-bottom: 4px;
}
.rail__pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: rail-pulse 2.4s ease-out infinite;
}
@keyframes rail-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(53, 240, 166, 0.55); }
  70%  { box-shadow: 0 0 0 11px rgba(53, 240, 166, 0); }
  100% { box-shadow: 0 0 0 0 rgba(53, 240, 166, 0); }
}
.rail__foot-text {
  writing-mode: vertical-rl;
  font-family: var(--font-rail);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--steel);
}

/* ---------- 6. 固定头部 ---------- */
.site-head {
  position: fixed;
  top: 0;
  left: var(--rail);
  right: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  pointer-events: none;
}
.site-head > * { pointer-events: auto; }

/* 顶部滚动播报条 */
.ticker {
  height: 34px;
  overflow: hidden;
  display: flex;
  align-items: center;
  background: #071432;
  border-bottom: 1px solid var(--line);
}
.ticker__track {
  display: flex;
  align-items: center;
  width: max-content;
  animation: ticker-scroll 46s linear infinite;
  will-change: transform;
}
.ticker__group {
  display: flex;
  align-items: center;
  gap: 44px;
  padding-right: 44px;
}
.ticker__item {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  font-family: var(--font-rail);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
}
.ticker__dot {
  width: 6px;
  height: 6px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--green);
  flex: 0 0 auto;
}
.ticker:hover .ticker__track { animation-play-state: paused; }

@keyframes ticker-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* 悬浮胶囊导航浮岛 */
.nav-island {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
  margin: 16px clamp(12px, 3vw, 44px) 0;
  padding: 10px 12px 10px 18px;
  border-radius: var(--r-pill);
  background: rgba(11, 27, 60, 0.74);
  border: 1px solid var(--line-2);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 20px 50px -26px rgba(0, 0, 0, 0.95);
  transition: margin 0.26s var(--ease), padding 0.26s var(--ease),
              background 0.26s var(--ease), border-radius 0.26s var(--ease);
}
.site-head.is-compact .nav-island {
  margin-top: 8px;
  padding: 6px 10px 6px 16px;
  background: rgba(5, 14, 36, 0.92);
}

.nav-island__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}
.nav-island__brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  font-family: var(--font-rail);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #0A0F1F;
  background: linear-gradient(150deg, var(--orange), var(--orange-2));
  clip-path: polygon(14% 0, 100% 0, 86% 100%, 0 100%);
}
.nav-island__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.nav-island__brand-text b {
  font-size: 15px;
  font-weight: 700;
  color: var(--ivory);
  letter-spacing: 0.01em;
}
.nav-island__brand-text span {
  font-family: var(--font-rail);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--steel);
}

.nav-island__nav { margin-left: auto; }
.nav-island__links {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--steel);
  white-space: nowrap;
  transition: color 0.18s var(--ease), background 0.18s var(--ease);
}
.nav-link:hover { color: var(--cloud); background: var(--glass); }
.nav-link[aria-current="page"] {
  background: var(--orange);
  color: #0A0F1F;
  font-weight: 700;
}

.nav-island__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 12px;
  border: 1px solid var(--line-2);
  background: var(--glass);
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}
.nav-toggle:hover { border-color: var(--ice); }
.nav-toggle__bars { display: grid; gap: 4px; width: 18px; }
.nav-toggle__bar {
  height: 2px;
  border-radius: 2px;
  background: var(--cloud);
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 7. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  font-family: var(--font-rail);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: transform 0.18s var(--ease), background 0.18s var(--ease),
              color 0.18s var(--ease), border-color 0.18s var(--ease),
              box-shadow 0.18s var(--ease);
}
.btn--solid {
  background: var(--orange);
  color: #0A0F1F;
  box-shadow: 0 12px 28px -14px rgba(255, 106, 26, 0.95);
}
.btn--solid:hover { background: var(--orange-2); transform: translateY(-2px); }
.btn--ghost {
  background: var(--glass);
  border-color: var(--line-2);
  color: var(--cloud);
}
.btn--ghost:hover { border-color: var(--ice); color: var(--ice); transform: translateY(-2px); }
.btn--line {
  border-color: rgba(127, 176, 255, 0.42);
  color: var(--ice);
}
.btn--line:hover { background: rgba(127, 176, 255, 0.12); transform: translateY(-2px); }

/* ---------- 8. 布局容器 ---------- */
.container {
  width: 100%;
  max-width: var(--content);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(52px, 8vw, 108px);
}
.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px 24px;
  margin-bottom: clamp(22px, 4vw, 44px);
}
.section__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.08;
  letter-spacing: 0.01em;
  color: var(--ivory);
}
.section__note {
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

.grid { display: grid; gap: clamp(16px, 2vw, 28px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ---------- 9. 排版组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-rail);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  flex: 0 0 auto;
  background: var(--orange);
}

.lede {
  max-width: 60ch;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.7;
  color: #C9D8F2;
}

.prose {
  max-width: 68ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--cloud);
}
.prose p + p { margin-top: 1.05em; }
.prose strong { color: var(--ivory); font-weight: 600; }
.prose h3 {
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  color: var(--ivory);
  margin-top: 1.6em;
  margin-bottom: 0.5em;
}

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

/* ---------- 10. 面板 / 数据块 ---------- */
.panel {
  border-radius: var(--r-lg);
  background: var(--ink-2);
  border: 1px solid var(--line);
  padding: clamp(18px, 2.4vw, 28px);
}
.panel--glass {
  background: var(--glass);
  border-color: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.panel__title {
  font-family: var(--font-rail);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ivory);
}

.stat { display: flex; flex-direction: column; gap: 4px; }
.stat__value {
  font-family: var(--font-numeric);
  font-size: clamp(24px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}
.stat__value--green { color: var(--green); }
.stat__label {
  font-family: var(--font-rail);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  font-family: var(--font-rail);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ice);
  background: rgba(127, 176, 255, 0.12);
  border: 1px solid rgba(127, 176, 255, 0.24);
}
.tag--orange {
  color: var(--orange);
  background: rgba(255, 106, 26, 0.12);
  border-color: rgba(255, 106, 26, 0.32);
}
.tag--green {
  color: var(--green);
  background: rgba(53, 240, 166, 0.10);
  border-color: rgba(53, 240, 166, 0.28);
}

/* ---------- 11. 图片容器（页面阶段放置图片占位） ---------- */
.figure { display: flex; flex-direction: column; gap: 10px; }
.figure__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(127, 176, 255, 0.10), rgba(5, 14, 36, 0.9) 55%),
    var(--ink-2);
}
.figure__frame--wide   { aspect-ratio: 21 / 9; }
.figure__frame--portrait { aspect-ratio: 3 / 4; }
.figure__frame--square { aspect-ratio: 1 / 1; }
.figure__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}
.figure__caption {
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 12. 装饰：刻度框景 / 斜切色带 ---------- */
.ticks { position: relative; }
.ticks::before,
.ticks::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  pointer-events: none;
}
.ticks::before {
  top: -1px;
  left: -1px;
  border-top: 1px solid var(--orange);
  border-left: 1px solid var(--orange);
}
.ticks::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 1px solid var(--orange);
  border-right: 1px solid var(--orange);
}

.diagonal-band {
  position: relative;
  isolation: isolate;
  padding-block: clamp(40px, 6vw, 78px);
}
.diagonal-band::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  transform: skewY(-1.4deg);
  background: linear-gradient(100deg,
              rgba(255, 106, 26, 0.10) 0%,
              rgba(11, 27, 60, 0.60) 52%,
              rgba(53, 240, 166, 0.08) 100%);
  border-block: 1px solid var(--line);
}

/* ---------- 13. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-rail);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--steel);
}
.breadcrumbs__link { color: var(--ice); transition: color 0.18s var(--ease); }
.breadcrumbs__link:hover { color: var(--orange); }
.breadcrumbs__sep { color: rgba(143, 161, 192, 0.5); }
.breadcrumbs__current { color: var(--cloud); }

/* ---------- 14. 复制按钮 ---------- */
.copy-chip {
  display: flex;
  align-items: baseline;
  gap: 10px;
  width: 100%;
  padding: 9px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--glass);
  text-align: left;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}
.copy-chip:hover { border-color: var(--ice); }
.copy-chip + .copy-chip { margin-top: 8px; }
.copy-chip__label {
  flex: 0 0 auto;
  font-family: var(--font-rail);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
}
.copy-chip__value {
  font-size: 13.5px;
  color: var(--cloud);
  overflow-wrap: anywhere;
}
.copy-chip.is-copied { border-color: var(--green); }
.copy-chip.is-copied .copy-chip__value { color: var(--green); }

/* ---------- 15. 入场显现 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.32s var(--ease), transform 0.32s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 16. 返回顶部 ---------- */
.back-to-top {
  position: fixed;
  right: clamp(14px, 3vw, 34px);
  bottom: clamp(14px, 3vw, 34px);
  z-index: 120;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  font-size: 20px;
  line-height: 1;
  color: var(--cloud);
  background: var(--glass);
  border: 1px solid var(--line-2);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease),
              visibility 0.28s var(--ease), background 0.18s var(--ease),
              color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.back-to-top.is-on { opacity: 1; visibility: visible; transform: none; }
.back-to-top:hover {
  background: var(--orange);
  color: #0A0F1F;
  border-color: var(--orange);
}

/* ---------- 17. 页脚 ---------- */
.site-foot {
  position: relative;
  overflow: hidden;
  margin-top: clamp(48px, 8vw, 96px);
  background: var(--ink-2);
  border-top: 1px solid var(--line);
}
.site-foot::before {
  content: "";
  position: absolute;
  left: -12%;
  top: -70%;
  width: 62%;
  height: 240%;
  pointer-events: none;
  background: radial-gradient(circle at 50% 50%, rgba(255, 106, 26, 0.14), transparent 62%);
}

.foot-inner {
  position: relative;
  width: 100%;
  max-width: var(--content);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.foot-top {
  display: grid;
  grid-template-columns: minmax(220px, 0.9fr) minmax(0, 1.6fr) minmax(250px, 1fr);
  gap: clamp(24px, 4vw, 56px);
  padding-block: clamp(40px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}

.foot-brand { display: flex; flex-direction: column; gap: 10px; }
.foot-brand__mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  font-family: var(--font-rail);
  font-size: 20px;
  font-weight: 700;
  color: #0A0F1F;
  background: linear-gradient(150deg, var(--orange), var(--orange-2));
  clip-path: polygon(14% 0, 100% 0, 86% 100%, 0 100%);
}
.foot-brand__name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--ivory);
  line-height: 1.2;
}
.foot-brand__line {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--steel);
  max-width: 26ch;
}

.foot-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}
.foot-col { display: flex; flex-direction: column; gap: 12px; }
.foot-col__title {
  font-family: var(--font-rail);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
}
.foot-col__list { display: flex; flex-direction: column; gap: 8px; }
.foot-col__link {
  font-size: 14.5px;
  color: var(--cloud);
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
  display: inline-block;
}
.foot-col__link:hover { color: var(--ice); transform: translateX(3px); }
.foot-col__link[aria-current="page"] { color: var(--orange); font-weight: 600; }

.foot-contact { display: flex; flex-direction: column; gap: 10px; }
.foot-contact__title {
  font-family: var(--font-rail);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 2px;
}
.foot-contact__addr {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--steel);
}
.foot-contact__note {
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(143, 161, 192, 0.78);
}

.foot-index {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: clamp(16px, 3vw, 44px);
  padding-block: clamp(24px, 3.4vw, 40px);
  border-bottom: 1px solid var(--line);
}
.foot-index__title {
  flex: 0 0 auto;
  font-family: var(--font-rail);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel);
  padding-top: 2px;
}
.foot-index__groups { display: flex; flex-wrap: wrap; gap: clamp(16px, 3vw, 44px); }
.foot-index__group { display: flex; flex-direction: column; gap: 8px; min-width: 200px; }
.foot-index__label {
  font-family: var(--font-numeric);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--green);
}
.foot-index__links { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.foot-index__link {
  font-size: 13.5px;
  color: var(--ice);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.foot-index__link:hover { color: var(--orange); border-bottom-color: var(--orange); }
.foot-index__link[aria-current="page"] { color: var(--orange); }

.foot-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 20px 28px;
}
.foot-legal__copy,
.foot-legal__icp {
  font-family: var(--font-numeric);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--steel);
}
.foot-legal__icp { color: rgba(143, 161, 192, 0.8); }

/* ---------- 18. 响应式 · 平板 ---------- */
@media (max-width: 1180px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-top { grid-template-columns: minmax(200px, 1fr) minmax(0, 1.6fr); }
  .foot-contact { grid-column: 1 / -1; }
}

@media (max-width: 1120px) {
  .nav-link { padding: 8px 10px; font-size: 13px; }
  .nav-island { gap: 10px; }
  .btn { padding: 10px 16px; font-size: 13px; }
}

/* ---------- 19. 响应式 · 移动 ---------- */
@media (max-width: 900px) {
  :root { --rail: 0px; --head-h: 120px; }

  body { padding-left: 0; }
  .rail { display: none; }
  .site-head { left: 0; }

  .nav-island {
    flex-wrap: wrap;
    margin: 12px 14px 0;
    padding: 9px 12px;
    border-radius: 22px;
  }
  .site-head.is-compact .nav-island { border-radius: 18px; padding: 7px 12px; }

  .nav-island__nav {
    flex: 1 0 100%;
    order: 3;
    margin-left: 0;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.3s var(--ease), opacity 0.24s var(--ease);
  }
  .nav-island__nav[data-open="true"] {
    max-height: 70vh;
    opacity: 1;
    overflow-y: auto;
  }
  .nav-island__links {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--line);
  }
  .nav-link {
    padding: 12px 14px;
    border-radius: 12px;
    font-size: 15px;
  }

  .nav-toggle { display: grid; margin-left: auto; }
  .btn--ghost { display: none; }

  .grid--2,
  .grid--3 { grid-template-columns: 1fr; }

  .foot-top { grid-template-columns: 1fr; }
  .foot-index__group { min-width: 100%; }
  .foot-legal { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  body { font-size: 15.5px; }
  .nav-island__brand-text { display: none; }
  .foot-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 20. 降级动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .ticker__track { animation: none; }
  .rail__pulse { animation: none; }
  .reveal { opacity: 1; transform: none; }
}