/* =========================================================
   必赢亚州赛事 · /assets/site.css
   共享层：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ========================================================= */

*, *::before, *::after { box-sizing: border-box; }
html, 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; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 148px; }

:root {
  /* 品牌色 */
  --c-void: #071322;
  --c-navy: #0B1F3A;
  --c-navy-2: #132B4D;
  --c-navy-3: #1B3A63;
  --c-signal: #FF6B35;
  --c-signal-hi: #FF8A5C;
  --c-mint: #2EC4B6;
  --c-mint-deep: #1F8F85;
  --c-sand: #F4E1C1;
  --c-paper: #F7F4EC;
  --c-mist: #A9B4C2;

  /* 语义色 */
  --c-text: #F7F4EC;
  --c-text-dim: #A9B4C2;
  --c-ink: #071322;
  --c-ink-soft: rgba(7, 19, 34, .72);
  --c-line: rgba(169, 180, 194, .26);
  --c-line-strong: rgba(169, 180, 194, .5);

  /* 字体 */
  --font-display: "Archivo Black", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* 字号 */
  --fs-display: clamp(2.5rem, 7vw, 5.6rem);
  --fs-h1: clamp(2rem, 4.6vw, 3.4rem);
  --fs-h2: clamp(1.55rem, 3vw, 2.2rem);
  --fs-h3: clamp(1.1rem, 1.8vw, 1.4rem);
  --fs-body: clamp(.95rem, 1vw, 1.02rem);
  --fs-small: .84rem;
  --fs-micro: .72rem;

  /* 尺度 */
  --gutter: clamp(1rem, 4vw, 3.5rem);
  --maxw: 1240px;
  --radius-s: 6px;
  --radius-m: 14px;
  --radius-l: 26px;
  --shadow-card: 0 18px 40px -24px rgba(7, 19, 34, .9);
}

body {
  background-color: var(--c-navy);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 蓝图底纹：全域极淡坐标网格 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(169, 180, 194, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(169, 180, 194, .05) 1px, transparent 1px);
  background-size: 80px 80px;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -.01em;
}

p { max-width: 68ch; }
strong { font-weight: 700; }

::selection {
  background: var(--c-signal);
  color: var(--c-void);
}

:focus-visible {
  outline: 2px solid var(--c-mint);
  outline-offset: 3px;
}

#main-content:focus { outline: none; }
#main-content { scroll-margin-top: 148px; }

/* ---------------- 跳转链接 ---------------- */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 300;
  display: inline-block;
  padding: .65rem 1.1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .12em;
  color: var(--c-void);
  background: var(--c-signal);
  border-radius: var(--radius-s);
  transform: translateY(-180%);
  transition: transform .22s ease;
}
.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid var(--c-paper);
  outline-offset: 2px;
}

/* ---------------- 滚动进度 ---------------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--c-signal), var(--c-mint));
  z-index: 250;
  pointer-events: none;
}

/* =========================================================
   头部
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  color: var(--c-text);
  background: linear-gradient(180deg, rgba(11, 31, 58, .98), rgba(11, 31, 58, .94));
  border-bottom: 1px solid var(--c-line);
  box-shadow: 0 1px 0 rgba(46, 196, 182, .14);
  transition: box-shadow .3s ease;
}
.site-header.is-condensed {
  box-shadow: 0 18px 34px -26px rgba(0, 0, 0, .95), 0 1px 0 rgba(255, 107, 53, .35);
}

/* 顶部坐标轨 */
.site-header__rail {
  background-color: var(--c-void);
  border-bottom: 1px solid var(--c-line);
  background-image: repeating-linear-gradient(90deg, rgba(169, 180, 194, .14) 0 1px, transparent 1px 112px);
}
.site-header__inner {
  width: min(100% - 2 * var(--gutter), var(--maxw));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: .45rem;
}
.coordinate-tag {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .14em;
  color: var(--c-mist);
  white-space: nowrap;
}
.coordinate-tag__dot {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--c-mint);
  box-shadow: 0 0 0 3px rgba(46, 196, 182, .18);
  animation: cb-pulse 2.4s ease-in-out infinite;
}
@keyframes cb-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .45; transform: scale(.78); }
}

/* 刊头 */
.masthead { position: relative; }
.masthead__inner {
  width: min(100% - 2 * var(--gutter), var(--maxw));
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding-block: clamp(.85rem, 1.7vw, 1.35rem);
  transition: padding-block .3s ease;
}
.site-header.is-condensed .masthead__inner { padding-block: .55rem; }

.masthead__note {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--c-mist);
  white-space: nowrap;
}
.masthead__note::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--c-signal);
  flex: 0 0 auto;
}
.masthead__note-sep { color: var(--c-signal); }

.masthead__brand {
  justify-self: center;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: .2rem;
  padding: .1rem .5rem;
  border-radius: var(--radius-s);
  transition: color .2s ease;
}
.masthead__brand-cn {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.3rem, 2.6vw, 2rem);
  line-height: 1;
  letter-spacing: .02em;
  color: var(--c-paper);
  transition: color .2s ease;
}
.masthead__brand-en {
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .42em;
  text-transform: uppercase;
  color: var(--c-signal);
  padding-left: .42em;
  transition: opacity .25s ease, color .2s ease;
}
.masthead__brand:hover .masthead__brand-cn { color: var(--c-signal-hi); }
.masthead__brand:hover .masthead__brand-en { color: var(--c-mint); }

.masthead__actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: .75rem;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 44px;
  padding: .85rem 1.4rem;
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: 700;
  letter-spacing: .06em;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
}
.btn--signal {
  background: var(--c-signal);
  color: var(--c-void);
  box-shadow: 0 10px 24px -14px rgba(255, 107, 53, .95);
}
.btn--signal:hover { background: var(--c-signal-hi); transform: translateY(-1px); }
.btn--ghost {
  border-color: var(--c-line-strong);
  color: var(--c-paper);
  background: rgba(247, 244, 236, .02);
}
.btn--ghost:hover { border-color: var(--c-mint); color: var(--c-mint); }
.btn--compact {
  min-height: 38px;
  padding: .6rem 1.1rem;
  font-size: .78rem;
  letter-spacing: .05em;
}
.btn--block { width: 100%; }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: .55rem;
  min-height: 38px;
  padding: .5rem .85rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--c-paper);
  border: 1px solid var(--c-line-strong);
  border-radius: 999px;
  transition: border-color .2s ease, color .2s ease;
}
.nav-toggle:hover { border-color: var(--c-mint); color: var(--c-mint); }
.nav-toggle__glyph {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  width: 16px;
  height: 12px;
}
.nav-toggle__glyph span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform .25s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__glyph span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__glyph span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__glyph span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle__text { line-height: 1; }

/* 主导航：细线路径 */
.primary-nav {
  border-top: 1px solid var(--c-line);
  background: linear-gradient(90deg, rgba(19, 43, 77, .92), rgba(11, 31, 58, .92));
}
.primary-nav__inner {
  width: min(100% - 2 * var(--gutter), var(--maxw));
  margin-inline: auto;
}
.primary-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: stretch;
  counter-reset: nav-index;
}
.primary-nav__item {
  display: flex;
  counter-increment: nav-index;
  border-left: 1px solid var(--c-line);
}
.primary-nav__item:first-child { border-left: 0; }
.primary-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: .5rem;
  padding: .72rem clamp(.75rem, 1.7vw, 1.4rem);
  font-size: .92rem;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--c-text-dim);
  transition: color .2s ease, background-color .2s ease;
}
.primary-nav__link::before {
  content: "0" counter(nav-index);
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .06em;
  color: rgba(169, 180, 194, .55);
  transition: color .2s ease;
}
.primary-nav__link:hover {
  color: var(--c-paper);
  background: rgba(46, 196, 182, .08);
}
.primary-nav__link:hover::before { color: var(--c-mint); }
.primary-nav__link[aria-current="page"] {
  color: var(--c-paper);
  background: linear-gradient(180deg, rgba(255, 107, 53, .18), rgba(255, 107, 53, .04));
}
.primary-nav__link[aria-current="page"]::before { color: var(--c-signal); }
.primary-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -4px;
  width: 8px;
  height: 8px;
  margin-left: -4px;
  border-radius: 50%;
  background: var(--c-signal);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, .16);
}
@keyframes cb-navdrop {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 6vw, 6rem);
  background-color: var(--c-void);
  color: var(--c-text);
  border-top: 1px solid var(--c-line);
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(169, 180, 194, .07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(169, 180, 194, .07) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: .8;
}
.site-footer::after {
  content: "";
  position: absolute;
  top: -34%;
  right: -8%;
  width: 44vmin;
  height: 44vmin;
  pointer-events: none;
  border-radius: 42% 58% 63% 37% / 45% 41% 59% 55%;
  background: radial-gradient(circle at 32% 32%, rgba(255, 107, 53, .22), transparent 70%);
}
.site-footer__grid {
  position: relative;
  z-index: 1;
  width: min(100% - 2 * var(--gutter), var(--maxw));
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.25fr 1fr 1.35fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  padding-block: clamp(2.5rem, 5vw, 4.5rem);
}

.footer-brand__brand {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--c-paper);
  transition: color .2s ease;
}
.footer-brand__brand:hover { color: var(--c-signal); }
.footer-brand__line {
  margin-top: .6rem;
  font-size: .9rem;
  color: var(--c-mist);
}
.footer-brand__coord {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  color: rgba(46, 196, 182, .9);
}
.footer-brand__icp {
  margin-top: .35rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--c-mist);
}

.footer-nav__title,
.footer-contact__title {
  margin-bottom: 1rem;
  padding-bottom: .6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--c-mint);
  border-bottom: 1px solid var(--c-line);
}
.footer-nav__list { display: grid; grid-template-columns: 1fr; }
.footer-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .55rem 0;
  font-size: .92rem;
  color: var(--c-text-dim);
  border-bottom: 1px dashed rgba(169, 180, 194, .16);
  transition: color .2s ease, padding-left .2s ease;
}
.footer-nav__link::after {
  content: "↗";
  font-family: var(--font-mono);
  font-size: .78rem;
  opacity: .35;
}
.footer-nav__link:hover {
  color: var(--c-signal);
  padding-left: .35rem;
}
.footer-nav__link[aria-current="page"] {
  color: var(--c-signal);
}

.footer-contact__list { display: block; }
.footer-contact__item {
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  gap: .6rem;
  padding-block: .35rem;
  font-size: .88rem;
  color: var(--c-text-dim);
}
.footer-contact__label {
  padding-top: .2rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  color: rgba(169, 180, 194, .7);
}
.footer-contact__value {
  color: var(--c-paper);
  word-break: break-word;
}
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.1rem;
  margin-top: 1.1rem;
}
.footer-legal__link {
  font-size: .82rem;
  color: var(--c-mist);
  padding-bottom: 1px;
  border-bottom: 1px solid var(--c-line-strong);
  transition: color .2s ease, border-color .2s ease;
}
.footer-legal__link:hover {
  color: var(--c-mint);
  border-color: var(--c-mint);
}

.site-footer__base {
  position: relative;
  z-index: 1;
  width: min(100% - 2 * var(--gutter), var(--maxw));
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .4rem 1.5rem;
  padding-block: 1.1rem 1.6rem;
  border-top: 1px solid var(--c-line);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--c-mist);
}
.site-footer__copy,
.site-footer__meta,
.site-footer__icp { max-width: none; }
.site-footer__meta { color: rgba(169, 180, 194, .75); }

/* =========================================================
   通用布局与组件
   ========================================================= */
.page-shell {
  width: min(100% - 2 * var(--gutter), var(--maxw));
  margin-inline: auto;
}
.section {
  position: relative;
  padding-block: clamp(2.5rem, 5vw, 5rem);
}
.section--paper { background-color: var(--c-paper); color: var(--c-ink); }
.section--sand { background-color: var(--c-sand); color: var(--c-ink); }
.section--deep { background-color: var(--c-navy-2); }

.grid {
  display: grid;
  gap: clamp(1rem, 2vw, 1.6rem);
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: end;
  gap: .5rem 1.25rem;
  margin-bottom: clamp(1.25rem, 2.5vw, 2rem);
}
.section-head__index {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .24em;
  color: var(--c-signal);
}
.section-head__title {
  grid-column: 1 / -1;
  font-size: var(--fs-h2);
  color: var(--c-paper);
}
.section-head__desc {
  grid-column: 1 / -1;
  max-width: 62ch;
  color: var(--c-text-dim);
}
.section--paper .section-head__title,
.section--sand .section-head__title { color: var(--c-ink); }
.section--paper .section-head__desc,
.section--sand .section-head__desc { color: var(--c-ink-soft); }

/* 面包屑 */
.breadcrumb {
  width: min(100% - 2 * var(--gutter), var(--maxw));
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  padding-block: .9rem;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .08em;
  color: var(--c-mist);
}
.breadcrumb__link {
  color: var(--c-mist);
  transition: color .2s ease;
}
.breadcrumb__link:hover { color: var(--c-mint); }
.breadcrumb__sep { color: rgba(169, 180, 194, .5); }
.breadcrumb__current { color: var(--c-paper); }

/* 卡片 */
.card {
  position: relative;
  padding: clamp(1rem, 2vw, 1.6rem);
  background: linear-gradient(160deg, rgba(19, 43, 77, .95), rgba(11, 31, 58, .96));
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.card--sand { background: var(--c-sand); color: var(--c-ink); border-color: rgba(7, 19, 34, .12); }
.card--paper { background: var(--c-paper); color: var(--c-ink); border-color: rgba(7, 19, 34, .12); }
.card__index {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .2em;
  color: var(--c-mint);
}
.card__title {
  margin-top: .5rem;
  font-size: var(--fs-h3);
  color: inherit;
}
.card__text {
  margin-top: .5rem;
  font-size: .94rem;
  color: var(--c-text-dim);
}
.card--sand .card__text,
.card--paper .card__text { color: var(--c-ink-soft); }
.card--sand .card__index,
.card--paper .card__index { color: var(--c-mint-deep); }

/* 实时数据标签 */
.data-tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .25rem .65rem;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .08em;
  color: var(--c-mint);
  background: rgba(46, 196, 182, .1);
  border: 1px solid rgba(46, 196, 182, .4);
  border-radius: 999px;
}

/* 图片容器基础规则 */
.media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background:
    linear-gradient(135deg, var(--c-navy-3), var(--c-void) 70%);
}
.media > img,
.media > svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: .75rem 1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: .08em;
  color: var(--c-paper);
  background: linear-gradient(0deg, rgba(7, 19, 34, .92), transparent);
}

/* 滚动显现 */
html.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .65s ease, transform .65s cubic-bezier(.2, .7, .3, 1);
  transition-delay: var(--reveal-delay, 0ms);
}
html.js-reveal [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* =========================================================
   平板 900px
   ========================================================= */
@media (max-width: 900px) {
  html { scroll-padding-top: 96px; }
  #main-content { scroll-margin-top: 96px; }

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

  .masthead__inner {
    grid-template-columns: 1fr auto;
    gap: .75rem;
    padding-block: .75rem;
  }
  .masthead__note { display: none; }
  .masthead__brand { justify-self: start; align-items: flex-start; }
  .masthead__actions { justify-self: end; }
  .masthead__actions .btn--compact { display: none; }

  .primary-nav {
    display: none;
    background: var(--c-navy-2);
  }
  .primary-nav[data-open] {
    display: block;
    animation: cb-navdrop .25s ease both;
  }
  .primary-nav__inner { width: 100%; }
  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    counter-reset: nav-index;
  }
  .primary-nav__item {
    border-left: 0;
    border-bottom: 1px solid var(--c-line);
  }
  .primary-nav__item:last-child { border-bottom: 0; }
  .primary-nav__link {
    width: 100%;
    justify-content: space-between;
    padding: .9rem var(--gutter);
    font-size: .96rem;
  }
  .primary-nav__link[aria-current="page"]::after {
    left: auto;
    right: calc(var(--gutter) - 14px);
    bottom: 50%;
    margin: 0 0 -4px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .footer-brand { grid-column: 1 / -1; }

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

/* =========================================================
   手机 620px
   ========================================================= */
@media (max-width: 620px) {
  .coordinate-tag--right { display: none; }
  .coordinate-tag { letter-spacing: .1em; font-size: .66rem; }
  .site-header__inner { justify-content: flex-start; }

  .masthead__brand-en { letter-spacing: .26em; padding-left: .26em; }
  .masthead__brand-cn { font-size: 1.28rem; }

  .site-footer__grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .site-footer__base {
    flex-direction: column;
    align-items: flex-start;
    gap: .35rem;
  }

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

  .footer-contact__item { grid-template-columns: 3rem 1fr; }
}

/* =========================================================
   减少动态
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  html.js-reveal [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .scroll-progress { display: none; }
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}