/* ==========================================================================
   浩瀚体育 HTSports · 赛场信号站
   assets/site.css — 共享外壳样式：reset / 变量 / 中文排版 / 页头 / 页脚 /
   通用组件 / 图片容器 / 响应式 / 无障碍
   ========================================================================== */

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

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

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

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

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

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

a { color: inherit; }

/* ---------- 2. 设计变量 ---------- */
:root {
  /* 色彩体系 */
  --ink-void: #060A16;
  --ink-deep: #0D1428;
  --ink-layer: #172140;
  --line-rock: #38445F;
  --mist: #A6B0C6;
  --paper: #F3EEE4;
  --signal-orange: #FF6A2B;
  --pulse-green: #9BFF4D;
  --clay: #C0743F;
  --moss: #4E7F63;
  --amber: #FFC24B;

  /* 字体 */
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-head: "HarmonyOS Sans SC", "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Source Han Sans SC", "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-data: "JetBrains Mono", "Roboto Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;

  /* 尺寸 */
  --shell-max: 1320px;
  --shell-pad: 32px;
  --header-h: 66px;
  --radius-card: 16px;
  --radius-pill: 999px;
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink-void);
  background-image:
    radial-gradient(1100px 620px at 10% -12%, rgba(23, 33, 64, 0.95), transparent 68%),
    radial-gradient(760px 460px at 102% -4%, rgba(192, 116, 63, 0.14), transparent 62%),
    radial-gradient(900px 700px at 50% 118%, rgba(78, 127, 99, 0.12), transparent 70%);
  background-repeat: no-repeat;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

strong { font-weight: 700; color: var(--paper); }

::selection {
  background: var(--signal-orange);
  color: #10131f;
}

/* ---------- 4. 焦点与跳转 ---------- */
:focus-visible {
  outline: 2px solid var(--signal-orange);
  outline-offset: 3px;
  border-radius: 3px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 50%;
  z-index: 200;
  padding: 11px 20px;
  border-radius: var(--radius-pill);
  background: var(--signal-orange);
  color: #12162a;
  font: 700 14px/1 var(--font-head);
  text-decoration: none;
  transform: translate(-50%, -190%);
  transition: transform 0.2s ease;
}

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

#main-content { scroll-margin-top: 96px; }

/* ---------- 5. 页头 · 悬浮胶囊导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 70;
  padding: 12px 0 10px;
  transition: background-color 0.2s ease, backdrop-filter 0.2s ease, box-shadow 0.2s ease;
}

.site-header[data-scrolled] {
  background: linear-gradient(180deg, rgba(6, 10, 22, 0.96) 0%, rgba(6, 10, 22, 0.74) 64%, rgba(6, 10, 22, 0) 100%);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(56, 68, 95, 0.55);
}

.header-shell {
  position: relative;
  width: min(100% - var(--shell-pad), var(--shell-max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 品牌浮岛 */
.brand-island {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 18px 6px 6px;
  border: 1px solid var(--line-rock);
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--ink-layer), var(--ink-deep));
  text-decoration: none;
  transition: border-color 0.16s ease;
}

.brand-island:hover { border-color: var(--signal-orange); }

.brand-island__mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(140deg, var(--signal-orange), var(--clay));
  color: #0b0f1c;
  font: 800 14px/1 var(--font-data);
  letter-spacing: 0.04em;
  clip-path: polygon(9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%, 0 9px);
}

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

.brand-island__name {
  font: 700 15px/1.2 var(--font-head);
  color: var(--paper);
  white-space: nowrap;
}

.brand-island__latin {
  margin-left: 5px;
  font: 600 11px/1.2 var(--font-data);
  color: var(--mist);
  letter-spacing: 0.04em;
}

.brand-island__note {
  font: 500 11px/1.2 var(--font-data);
  color: var(--mist);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* 栏目胶囊 */
.nav-capsule {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px;
  border: 1px solid var(--line-rock);
  border-radius: var(--radius-pill);
  background: rgba(13, 20, 40, 0.86);
  backdrop-filter: blur(12px);
}

.nav-capsule__list {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0 auto;
}

.nav-capsule__item { display: block; }

.nav-link {
  display: block;
  padding: 9px 15px;
  border-radius: var(--radius-pill);
  font: 500 14px/1 var(--font-head);
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.16s ease, background-color 0.16s ease, box-shadow 0.16s ease;
}

.nav-link:hover {
  color: var(--paper);
  background: rgba(56, 68, 95, 0.45);
}

.nav-link[aria-current="page"] {
  color: var(--paper);
  background: linear-gradient(180deg, rgba(255, 106, 43, 0.22), rgba(255, 106, 43, 0.08));
  box-shadow: inset 0 0 0 1px rgba(255, 106, 43, 0.6);
}

.nav-cta {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: var(--signal-orange);
  color: #14182a;
  font: 700 13px/1 var(--font-head);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.16s ease, color 0.16s ease;
}

.nav-cta:hover {
  background: var(--pulse-green);
  color: #0b1020;
}

/* 今日信号状态点 */
.signal-pod {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border: 1px solid var(--line-rock);
  border-radius: var(--radius-pill);
  background: rgba(13, 20, 40, 0.86);
  font: 600 12px/1.2 var(--font-data);
  color: var(--paper);
  white-space: nowrap;
}

.signal-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pulse-green);
  box-shadow: 0 0 12px rgba(155, 255, 77, 0.6);
  animation: signal-pulse 2s ease-out infinite;
}

.signal-pod__note {
  color: var(--mist);
  font-weight: 500;
}

@keyframes signal-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(155, 255, 77, 0.55); }
  70%  { box-shadow: 0 0 0 9px rgba(155, 255, 77, 0); }
  100% { box-shadow: 0 0 0 0 rgba(155, 255, 77, 0); }
}

/* 移动信号键 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 10px 15px 10px 13px;
  border: 1px solid var(--line-rock);
  border-radius: var(--radius-pill);
  background: rgba(13, 20, 40, 0.92);
  color: var(--paper);
  font: 600 12px/1 var(--font-head);
  cursor: pointer;
  transition: border-color 0.16s ease, background-color 0.16s ease;
}

.nav-toggle:hover { border-color: var(--signal-orange); }

.nav-toggle__bars {
  display: grid;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transform-origin: center;
  transition: transform 0.16s ease, opacity 0.16s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5px) rotate(40deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5px) rotate(-40deg); }

/* 滚动进度条 */
.scroll-progress {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  height: 3px;
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--clay), var(--signal-orange) 52%, var(--pulse-green));
}

/* ---------- 6. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 120px);
  border-top: 1px solid var(--line-rock);
  background-color: var(--ink-void);
  background-image:
    linear-gradient(180deg, rgba(13, 20, 40, 0.94), rgba(6, 10, 22, 0.99)),
    repeating-linear-gradient(90deg, rgba(56, 68, 95, 0.28) 0 1px, transparent 1px 88px);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--signal-orange) 18%, var(--pulse-green) 66%, transparent);
  opacity: 0.8;
}

.footer-shell {
  width: min(100% - var(--shell-pad), var(--shell-max));
  margin-inline: auto;
  padding: 60px 0 28px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) 2.4fr;
  gap: 48px;
}

.footer-intro { display: grid; gap: 8px; align-content: start; }

.footer-brand {
  display: inline-block;
  font: 700 22px/1.3 var(--font-display);
  color: var(--paper);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.footer-brand:hover { color: var(--signal-orange); }

.footer-brand__latin {
  margin-left: 8px;
  font: 600 13px/1 var(--font-data);
  color: var(--mist);
  letter-spacing: 0.06em;
}

.footer-intro__note {
  font: 600 12px/1.5 var(--font-data);
  color: var(--signal-orange);
  letter-spacing: 0.06em;
}

.footer-intro__meta {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px;
}

.footer-col { display: grid; gap: 14px; align-content: start; }

.footer-col__title {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 700 13px/1 var(--font-head);
  letter-spacing: 0.14em;
  color: var(--mist);
}

.footer-col__title::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--clay);
}

.footer-col__list { display: grid; gap: 10px; }

.footer-col__list a {
  display: inline-block;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(243, 238, 228, 0.84);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.footer-col__list a:hover {
  color: var(--paper);
  border-bottom-color: var(--signal-orange);
}

.footer-bottom {
  margin-top: 48px;
  padding-top: 26px;
  border-top: 1px solid rgba(56, 68, 95, 0.7);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}

.footer-contact { display: grid; gap: 8px; }

.footer-contact p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(243, 238, 228, 0.9);
}

.footer-contact__key {
  display: inline-block;
  min-width: 76px;
  margin-right: 10px;
  font: 500 12px/1 var(--font-data);
  color: var(--mist);
  letter-spacing: 0.06em;
}

.footer-contact__note {
  font-size: 13px !important;
  color: var(--mist) !important;
}

.footer-legal {
  display: grid;
  gap: 12px;
  justify-items: end;
  text-align: right;
}

.footer-legal__line {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px 18px;
  font: 500 12px/1.6 var(--font-data);
  color: var(--mist);
  letter-spacing: 0.03em;
}

.footer-legal__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 18px;
}

.footer-legal__links a {
  font-size: 13px;
  color: rgba(243, 238, 228, 0.78);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 68, 95, 0.9);
  transition: color 0.16s ease, border-color 0.16s ease;
}

.footer-legal__links a:hover {
  color: var(--pulse-green);
  border-bottom-color: var(--pulse-green);
}

/* ---------- 7. 布局工具 ---------- */
.shell {
  width: min(100% - var(--shell-pad), 1240px);
  margin-inline: auto;
}

.section { padding: clamp(48px, 7vw, 88px) 0; }

.section-head {
  display: grid;
  gap: 12px;
  margin-bottom: 32px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font: 600 12px/1 var(--font-data);
  letter-spacing: 0.16em;
  color: var(--mist);
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 20px;
  height: 2px;
  background: var(--signal-orange);
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(24px, 3vw, 40px);
  font-weight: 700;
  line-height: 1.24;
}

.lede {
  max-width: 64ch;
  font-size: 16px;
  color: var(--mist);
}

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

.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 8. 通用组件 ---------- */
.card {
  padding: 22px;
  border: 1px solid var(--line-rock);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, rgba(23, 33, 64, 0.9), rgba(13, 20, 40, 0.94));
}

.card--cut {
  border-radius: 0;
  clip-path: polygon(22px 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%, 0 22px);
}

.card__label {
  display: block;
  margin-bottom: 10px;
  font: 600 12px/1 var(--font-data);
  letter-spacing: 0.12em;
  color: var(--mist);
  text-transform: uppercase;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: 1px solid var(--line-rock);
  border-radius: var(--radius-pill);
  font: 600 12px/1 var(--font-data);
  color: var(--mist);
  letter-spacing: 0.03em;
}

.tag--signal { border-color: rgba(255, 106, 43, 0.6); color: #FFB48C; }
.tag--clay { border-color: rgba(192, 116, 63, 0.65); color: #E9B183; }
.tag--amber { border-color: rgba(255, 194, 75, 0.6); color: #FFD98F; }

.data-num {
  font-family: var(--font-data);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  border: 1px solid var(--line-rock);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--paper);
  font: 600 14px/1 var(--font-head);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.btn--signal {
  background: var(--signal-orange);
  border-color: var(--signal-orange);
  color: #14182a;
}

.btn--signal:hover {
  background: var(--pulse-green);
  border-color: var(--pulse-green);
  color: #0b1020;
}

.btn--ghost:hover {
  border-color: var(--signal-orange);
  color: var(--signal-orange);
}

.crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font: 500 12px/1.5 var(--font-data);
  color: var(--mist);
  letter-spacing: 0.03em;
}

.crumb li { display: flex; align-items: center; gap: 8px; }

.crumb li + li::before {
  content: "/";
  color: var(--line-rock);
}

.crumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line-rock);
}

.crumb a:hover {
  color: var(--paper);
  border-bottom-color: var(--signal-orange);
}

.crumb [aria-current="page"] { color: var(--paper); }

.prose {
  max-width: 72ch;
  font-size: 17px;
  line-height: 1.8;
  color: #DCE2EF;
}

.prose h2 {
  margin: 2.2em 0 0.7em;
  font-size: clamp(22px, 2.4vw, 30px);
  color: var(--paper);
}

.prose h3 {
  margin: 1.8em 0 0.6em;
  font-size: 20px;
  color: var(--paper);
}

.prose p { margin-bottom: 1.2em; }

.prose a {
  color: var(--signal-orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose ul, .prose ol {
  margin: 0 0 1.2em;
  padding-left: 1.3em;
  list-style: disc;
}

.prose ol { list-style: decimal; }
.prose li { margin-bottom: 0.5em; }

/* 横向轨道 */
.rail {
  position: relative;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--line-rock), rgba(56, 68, 95, 0.12));
}

.rail__cursor {
  position: absolute;
  top: 50%;
  left: 0;
  width: 10px;
  height: 10px;
  margin-top: -5px;
  border-radius: 50%;
  background: var(--signal-orange);
  box-shadow: 0 0 0 4px rgba(255, 106, 43, 0.18);
  transform: translateX(-50%);
}

/* ---------- 9. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--line-rock);
  border-radius: 14px;
  background: linear-gradient(160deg, var(--ink-layer), var(--ink-void));
  clip-path: polygon(22px 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%, 0 22px);
}

.media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 10;
}

.media-frame--wide .media-frame__img { aspect-ratio: 21 / 9; }
.media-frame--tall .media-frame__img { aspect-ratio: 3 / 4; }
.media-frame--square .media-frame__img { aspect-ratio: 1 / 1; }

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(243, 238, 228, 0.055) 0 1px, transparent 1px 4px);
}

.media-frame__scrim {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 1;
  height: 58%;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(6, 10, 22, 0.94));
}

.media-frame__caption {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 14px;
  z-index: 3;
  font: 500 13px/1.55 var(--font-body);
  color: var(--paper);
}

.media-frame__badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 3;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  background: rgba(6, 10, 22, 0.82);
  border: 1px solid rgba(255, 106, 43, 0.55);
  font: 600 11px/1 var(--font-data);
  color: #FFB48C;
  letter-spacing: 0.08em;
}

/* ---------- 10. 滚动显现 ---------- */
.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.js-ready [data-reveal="in"] {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 11. 响应式 ---------- */
@media (max-width: 1279px) {
  .signal-pod__note { display: none; }
}

@media (max-width: 1180px) {
  .brand-island__note { display: none; }
  .nav-link { padding: 9px 12px; font-size: 13px; }
}

@media (max-width: 1020px) {
  .footer-top { grid-template-columns: 1fr; gap: 36px; }
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  :root { --shell-pad: 24px; }

  .nav-toggle { display: inline-flex; }

  .brand-island__latin { display: none; }

  .nav-capsule {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 14px;
    border-radius: 24px;
    background: rgba(9, 14, 29, 0.99);
    box-shadow: 0 30px 70px -34px #000, 0 0 0 1px rgba(56, 68, 95, 0.6);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
  }

  .nav-capsule[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-capsule__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    margin: 0;
  }

  .nav-capsule__item { display: block; }

  .nav-link {
    padding: 13px 16px;
    border-radius: 14px;
    font-size: 15px;
    white-space: normal;
  }

  .nav-cta {
    justify-content: center;
    padding: 14px 16px;
    border-radius: 14px;
    font-size: 14px;
  }

  .signal-pod { padding: 9px 13px; }

  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .footer-bottom {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .footer-legal {
    justify-items: start;
    text-align: left;
  }

  .footer-legal__line,
  .footer-legal__links { justify-content: flex-start; }
}

@media (max-width: 640px) {
  :root { --shell-pad: 20px; }

  body { font-size: 15.5px; }

  .nav-toggle__label { display: none; }
  .nav-toggle { padding: 11px 13px; }

  .signal-pod__label { display: none; }
  .signal-pod { padding: 11px 12px; }

  .footer-nav { grid-template-columns: 1fr; gap: 28px; }
  .footer-shell { padding: 46px 0 22px; }

  .grid,
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: minmax(0, 1fr); }

  .footer-contact__key { min-width: 0; display: block; margin: 0 0 2px; }
}

/* ---------- 12. 动效降级 ---------- */
@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;
  }

  .js-ready [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .signal-dot {
    animation: none;
    box-shadow: 0 0 0 3px rgba(155, 255, 77, 0.22);
  }

  .scroll-progress__bar { transition: none; }
}