/* ============================================================
   链接体育 · 云上赛场坐标
   /assets/site.css — 共享外壳与基础组件
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body, h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; }
ul[class], ol[class] { list-style: none; }
img, picture, svg, video { max-width: 100%; display: block; }
a { color: inherit; }
button { background: none; border: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }
hr { border: 0; }

/* ---------- 2. Tokens ---------- */
:root {
  /* 色彩 */
  --c-space: #061426;
  --c-night: #0D233D;
  --c-cyan: #37F0CF;
  --c-orange: #FF7A2F;
  --c-violet: #6D6A8E;
  --c-mist: #A9C1C7;
  --c-star: #F3F8F8;
  --c-void: #02070D;

  --bg: var(--c-space);
  --surface: var(--c-night);
  --text: var(--c-star);
  --muted: var(--c-mist);

  --line: rgba(169, 193, 199, 0.22);
  --line-soft: rgba(169, 193, 199, 0.14);
  --line-cyan: rgba(55, 240, 207, 0.34);
  --line-orange: rgba(255, 122, 47, 0.42);

  /* 字体 */
  --font-display: "Barlow Condensed", "DIN Alternate", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-data: "IBM Plex Mono", "Roboto Mono", SFMono-Regular, ui-monospace, Consolas, monospace;

  /* 形状与节奏 */
  --r-xs: 10px;
  --r-sm: 14px;
  --r-md: 18px;
  --r-lg: 28px;
  --r-pill: 999px;

  --w: 1320px;
  --pad: clamp(18px, 4vw, 56px);

  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --t-fast: 140ms;
  --t-mid: 200ms;
}

/* ---------- 3. Base ---------- */
body {
  min-height: 100vh;
  background-color: var(--c-space);
  background-image:
    radial-gradient(1100px 620px at 88% -10%, rgba(55, 240, 207, 0.09), transparent 60%),
    radial-gradient(900px 540px at 2% 4%, rgba(109, 106, 142, 0.16), transparent 62%),
    linear-gradient(to right, rgba(169, 193, 199, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(169, 193, 199, 0.045) 1px, transparent 1px);
  background-size: auto, auto, 96px 96px, 96px 96px;
  background-repeat: no-repeat, no-repeat, repeat, repeat;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.012em;
  text-wrap: balance;
}

h1 { font-size: clamp(34px, 5vw, 68px); }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: clamp(20px, 2.2vw, 26px); line-height: 1.2; }
h4 { font-size: 17px; line-height: 1.35; letter-spacing: 0; }

p { text-wrap: pretty; }

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

::selection { background: rgba(55, 240, 207, 0.28); color: var(--c-star); }

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

a:hover { text-decoration-color: currentColor; }

/* ---------- 4. Utilities ---------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.container {
  width: 100%;
  max-width: var(--w);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.stack > * + * { margin-top: 12px; }

.data,
.num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.num--accent { color: var(--c-orange); }

.rule {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--line-cyan), rgba(169, 193, 199, 0.12) 60%, transparent);
}

/* ---------- 5. Skip link ---------- */
.skip-link {
  position: fixed;
  top: 12px;
  left: 16px;
  z-index: 400;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: var(--r-pill);
  background: var(--c-cyan);
  color: var(--c-space);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform var(--t-mid) var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--c-star);
  outline-offset: 3px;
}

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease);
}

.btn--primary {
  background: rgba(55, 240, 207, 0.1);
  border-color: var(--c-cyan);
  color: var(--c-cyan);
  font-weight: 700;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--c-cyan);
  color: var(--c-space);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  border-color: rgba(169, 193, 199, 0.34);
  color: var(--c-star);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--c-cyan);
  background: rgba(55, 240, 207, 0.08);
  color: var(--c-cyan);
}

/* ---------- 7. Brand ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--c-star);
  text-decoration: none;
}

.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  border: 1px solid var(--line-cyan);
  border-radius: 12px;
  background:
    radial-gradient(circle at 50% 50%, rgba(55, 240, 207, 0.2), transparent 68%),
    rgba(13, 35, 61, 0.6);
}

.brand-mark__cross {
  position: relative;
  display: block;
  width: 14px;
  height: 14px;
}

.brand-mark__cross::before,
.brand-mark__cross::after {
  content: "";
  position: absolute;
  background: var(--c-cyan);
  border-radius: 2px;
}

.brand-mark__cross::before {
  left: 0;
  top: 50%;
  width: 100%;
  height: 1.5px;
  transform: translateY(-50%);
}

.brand-mark__cross::after {
  top: 0;
  left: 50%;
  width: 1.5px;
  height: 100%;
  transform: translateX(-50%);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.brand-text__name {
  display: block;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--c-star);
  transition: color var(--t-fast) var(--ease);
}

.brand-text__tag {
  display: block;
  font-family: var(--font-data);
  font-size: 10.5px;
  line-height: 1.2;
  letter-spacing: 0.18em;
  color: var(--c-mist);
}

.brand:hover .brand-text__name,
.brand:focus-visible .brand-text__name { color: var(--c-cyan); }

.brand--footer { margin-bottom: 6px; }

/* ---------- 8. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: linear-gradient(180deg, rgba(2, 7, 13, 0.88) 0%, rgba(2, 7, 13, 0.34) 62%, rgba(2, 7, 13, 0) 100%);
  transition: background-color var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
}

.site-header.is-scrolled {
  background: rgba(6, 20, 38, 0.96);
  box-shadow:
    inset 0 -1px 0 var(--line-cyan),
    0 18px 44px rgba(2, 7, 13, 0.55);
}

.header-shell {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  width: 100%;
  max-width: var(--w);
  margin-inline: auto;
  padding: 16px var(--pad);
  min-height: 78px;
  transition: min-height var(--t-mid) var(--ease), padding var(--t-mid) var(--ease);
}

.site-header.is-scrolled .header-shell {
  min-height: 62px;
  padding-block: 10px;
}

/* 状态胶囊 */
.header-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: 6px;
  padding: 6px 13px;
  border: 1px solid rgba(55, 240, 207, 0.26);
  border-radius: var(--r-pill);
  background: rgba(55, 240, 207, 0.06);
  font-family: var(--font-data);
  font-size: 11.5px;
  line-height: 1.4;
  letter-spacing: 0.08em;
  color: var(--c-mist);
  white-space: nowrap;
}

.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 0 3px rgba(55, 240, 207, 0.18);
}

.header-status__text { display: inline-block; }

/* 移动按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--r-pill);
  background: rgba(13, 35, 61, 0.72);
  color: var(--c-star);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: border-color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

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

.nav-toggle__label { line-height: 1; }

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

.nav-toggle__bars span {
  display: block;
  height: 1.5px;
  border-radius: 2px;
  background: var(--c-cyan);
  transition: transform var(--t-mid) var(--ease);
}

.site-header[data-open="true"] .nav-toggle__bars span:first-child {
  transform: translateY(2.75px) rotate(45deg);
}

.site-header[data-open="true"] .nav-toggle__bars span:last-child {
  transform: translateY(-2.75px) rotate(-45deg);
}

/* 导航 */
.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 26px);
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(4px, 1.2vw, 18px);
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 44px;
  padding: 6px 10px;
  border-radius: var(--r-xs);
  color: rgba(243, 248, 248, 0.78);
  font-size: 14.5px;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 6px;
  height: 1px;
  background: var(--c-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t-mid) var(--ease);
}

.nav-link:hover,
.nav-link:focus-visible { color: var(--c-star); }

.nav-link:hover::after,
.nav-link:focus-visible::after { transform: scaleX(1); }

.nav-link[aria-current="page"] { color: var(--c-cyan); }

.nav-link[aria-current="page"]::before {
  content: "";
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--c-orange);
  box-shadow: 0 0 0 3px rgba(255, 122, 47, 0.18);
}

.nav-link[aria-current="page"]::after { transform: scaleX(1); }

.nav-cta { flex: 0 0 auto; }

/* 滚动进度条 */
.scroll-meter {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: rgba(55, 240, 207, 0.1);
  overflow: hidden;
  opacity: 0;
  transition: opacity var(--t-mid) var(--ease);
}

.site-header.is-scrolled .scroll-meter { opacity: 1; }

.scroll-meter__fill {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-orange));
  transition: width 120ms linear;
}

/* ---------- 9. Footer ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(56px, 8vw, 120px);
  background: var(--c-void);
  color: var(--c-star);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-cyan) 32%, var(--c-orange) 68%, transparent);
  opacity: 0.55;
}

.site-footer::after {
  content: "";
  position: absolute;
  right: -8%;
  top: 14%;
  width: 520px;
  height: 320px;
  pointer-events: none;
  background: radial-gradient(closest-side, rgba(55, 240, 207, 0.1), transparent 100%);
}

.footer-shell {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--w);
  margin-inline: auto;
  padding: clamp(44px, 6vw, 80px) var(--pad) 28px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(240px, 1.15fr) minmax(0, 1.6fr) minmax(240px, 1fr);
  gap: clamp(28px, 4vw, 64px);
  padding-bottom: clamp(30px, 4vw, 52px);
  border-bottom: 1px solid rgba(169, 193, 199, 0.16);
}

.footer-brand__line {
  margin-top: 18px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.footer-summary {
  margin-top: 10px;
  max-width: 34ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(169, 193, 199, 0.92);
}

.footer-coord {
  margin-top: 18px;
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: rgba(169, 193, 199, 0.52);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}

.footer-col__title {
  margin-bottom: 16px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.22em;
  color: var(--c-cyan);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14.5px;
  line-height: 1.6;
  color: rgba(243, 248, 248, 0.72);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

.footer-link:hover,
.footer-link:focus-visible { color: var(--c-cyan); }

.footer-link--sm {
  min-height: 28px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-contact__row {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.footer-contact__label {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(169, 193, 199, 0.66);
}

.footer-contact__value {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--c-star);
  word-break: break-word;
}

.footer-contact__value--data {
  font-family: var(--font-data);
  letter-spacing: 0.02em;
}

.footer-contact__note {
  margin-top: 2px;
  font-size: 12.5px;
  line-height: 1.85;
  color: rgba(169, 193, 199, 0.7);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px clamp(16px, 3vw, 32px);
  padding-top: clamp(20px, 3vw, 30px);
  font-size: 12.5px;
  color: rgba(169, 193, 199, 0.72);
}

.footer-copy,
.footer-icp {
  font-family: var(--font-data);
  letter-spacing: 0.06em;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  margin-left: auto;
}

/* ---------- 10. Page scaffolding ---------- */
.page-section {
  padding-block: clamp(38px, 5.5vw, 88px);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: clamp(20px, 3vw, 36px);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.section-title { font-size: clamp(24px, 3vw, 36px); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-data);
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  flex: 0 0 auto;
  background: currentColor;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: 1px solid rgba(169, 193, 199, 0.28);
  border-radius: var(--r-pill);
  font-family: var(--font-data);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

.tag--cyan { color: var(--c-cyan); border-color: rgba(55, 240, 207, 0.4); }
.tag--orange { color: var(--c-orange); border-color: var(--line-orange); }

.card {
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(13, 35, 61, 0.92), rgba(6, 20, 38, 0.94));
  transition: border-color var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}

.card:hover,
.card:focus-within {
  border-color: var(--line-cyan);
  transform: translateY(-2px);
}

/* 面包屑 */
.breadcrumb {
  padding-block: 20px 4px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-mist);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: rgba(169, 193, 199, 0.42);
}

.breadcrumb__link {
  color: var(--c-mist);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

.breadcrumb__link:hover,
.breadcrumb__link:focus-visible { color: var(--c-cyan); }

.breadcrumb__current { color: var(--c-star); }

/* 网格 */
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* ---------- 11. Media frames (页面阶段放图占位) ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    linear-gradient(150deg, rgba(109, 106, 142, 0.34), rgba(6, 20, 38, 0.92) 55%, rgba(2, 7, 13, 0.96)),
    var(--c-night);
}

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

.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }
.media-frame--21x9 { aspect-ratio: 21 / 9; }
.media-frame--wide { aspect-ratio: 3 / 1; }

.media-frame--grid::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(243, 248, 248, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(243, 248, 248, 0.07) 1px, transparent 1px);
  background-size: 64px 64px;
}

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 28px 16px 12px;
  font-family: var(--font-data);
  font-size: 11.5px;
  line-height: 1.5;
  letter-spacing: 0.12em;
  color: var(--c-mist);
  background: linear-gradient(0deg, rgba(2, 7, 13, 0.92), transparent);
}

/* ---------- 12. Reveal (JS 增强，降级安全) ---------- */
.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
}

.js-ready [data-reveal].is-visible {
  opacity: 1;
  transform: none;
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-top {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .footer-contact {
    grid-column: 1 / -1;
    padding-top: 8px;
    border-top: 1px dashed var(--line-soft);
  }
}

@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }

  .header-status { margin-left: auto; }

  .site-nav {
    position: absolute;
    top: calc(100% + 2px);
    left: var(--pad);
    right: var(--pad);
    z-index: 5;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    margin-left: 0;
    padding: 18px;
    border: 1px solid var(--line-cyan);
    border-radius: var(--r-lg);
    background: rgba(9, 26, 46, 0.985);
    box-shadow: 0 28px 64px rgba(2, 7, 13, 0.66);
  }

  .site-header[data-open="true"] .site-nav { display: flex; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    width: 100%;
    min-height: 48px;
    padding: 10px 14px;
    border: 1px solid transparent;
    border-radius: var(--r-sm);
    font-size: 15px;
  }

  .nav-link::after { display: none; }

  .nav-link:hover,
  .nav-link:focus-visible {
    border-color: rgba(55, 240, 207, 0.32);
    background: rgba(55, 240, 207, 0.07);
  }

  .nav-link[aria-current="page"] {
    border-color: rgba(55, 240, 207, 0.4);
    background: rgba(55, 240, 207, 0.09);
  }

  .nav-cta { width: 100%; }

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

@media (max-width: 720px) {
  .footer-top { grid-template-columns: minmax(0, 1fr); }

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

  .footer-legal {
    margin-left: 0;
    width: 100%;
  }

  .footer-link { min-height: 44px; }

  .footer-link--sm { min-height: 36px; }
}

@media (max-width: 600px) {
  .header-status { display: none; }

  .brand-text__name { font-size: 17px; }

  .brand-text__tag { letter-spacing: 0.14em; }

  .brand-mark { width: 34px; height: 34px; border-radius: 10px; }

  .footer-nav { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 380px) {
  .nav-toggle__label { display: none; }
}

/* ---------- 14. 无障碍与降级 ---------- */
@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;
    scroll-behavior: auto !important;
  }

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

  .btn:hover,
  .card:hover,
  .card:focus-within { transform: none; }
}

@media print {
  .site-header,
  .site-footer,
  .skip-link,
  .scroll-meter { display: none !important; }

  body { background: #fff; color: #000; }
}