/* ==========================================================================
   微赢棋牌 CN 中文官方站 · 共享样式表 /assets/site.css
   基调：深墨绿数据室 + 荧光青指标色 + 赛场红黄语义色
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  --ink-900: #0A1512;
  --ink-800: #10201B;
  --ink-700: #17302A;
  --line: #2A4139;
  --line-soft: rgba(42, 65, 57, 0.55);

  --cyan: #3FE8C4;
  --cyan-dim: #12A98F;
  --orange: #FF8A3C;
  --card-red: #E4472F;
  --card-yellow: #F5C029;

  --paper: #EAF4EF;
  --muted: #8FA8A0;

  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo,
    Consolas, "Liberation Mono", monospace;

  --header-h: 76px;
  --wrap: 1400px;
  --gutter: clamp(1.125rem, 4vw, 3.5rem);
  --radius-soft: 20px 6px 20px 6px;
  --radius-tag: 3px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  overflow-x: clip;
}

body {
  margin: 0;
  overflow-x: clip;
  background-color: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.0625rem);
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
[hidden] { display: none !important; }

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

::selection {
  background: var(--cyan);
  color: var(--ink-900);
}

/* ---------- 3. 中文排版级 ---------- */
h1, .h1 {
  font-size: clamp(2rem, 1.35rem + 3.6vw, 4.2rem);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: 0.02em;
}

h2, .h2 {
  font-size: clamp(1.45rem, 1.15rem + 1.6vw, 2.4rem);
  line-height: 1.25;
  font-weight: 900;
  letter-spacing: 0.03em;
}

h3, .h3 {
  font-size: clamp(1.12rem, 1.02rem + 0.6vw, 1.5rem);
  line-height: 1.45;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.005em;
}

.lede {
  max-width: 32em;
  font-size: clamp(1.02rem, 0.96rem + 0.45vw, 1.28rem);
  line-height: 1.75;
  color: rgba(234, 244, 239, 0.9);
}

.prose {
  max-width: 36em;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(234, 244, 239, 0.86);
}
.prose > * + * { margin-top: 1em; }
.prose strong { color: var(--cyan); font-weight: 700; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--cyan);
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--cyan);
  flex: 0 0 auto;
}

.label-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-tag);
  background: rgba(23, 48, 42, 0.5);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  white-space: nowrap;
}
.label-tag--accent {
  border-color: var(--cyan-dim);
  color: var(--cyan);
}

.rule {
  display: block;
  height: 1px;
  width: 100%;
  background: var(--line);
  border: 0;
}

/* ---------- 4. 布局工具 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
  padding-block: clamp(2.75rem, 6vw, 5.5rem);
}

.section__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 1rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.grid {
  display: grid;
  gap: clamp(1.25rem, 2.4vw, 2rem);
}
.grid--12 { 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)); }

.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

/* ---------- 5. 按钮与链接行为 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.75rem 1.4rem;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  background: var(--cyan);
  color: var(--ink-900);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
  transition: background 0.22s var(--ease), border-color 0.22s var(--ease),
    color 0.22s var(--ease), transform 0.22s var(--ease);
}
.btn:hover,
.btn:focus-visible {
  background: var(--orange);
  border-color: var(--orange);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--line);
}
.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: rgba(63, 232, 196, 0.08);
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 6. 数据组件 ---------- */
.metric {
  position: relative;
  display: grid;
  gap: 0.4rem;
  padding: clamp(1rem, 2vw, 1.5rem) clamp(1rem, 2vw, 1.5rem)
    clamp(1rem, 2vw, 1.4rem) calc(clamp(1rem, 2vw, 1.5rem) + 4px);
  border: 1px solid var(--line);
  border-radius: var(--radius-tag);
  background: var(--ink-800);
  overflow: hidden;
}
.metric::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), var(--cyan-dim));
}

.metric__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.9rem, 1.1rem + 3vw, 3.4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}
.metric__unit {
  margin-left: 0.35em;
  font-size: 0.42em;
  font-weight: 400;
  color: var(--muted);
}
.metric__label {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.metric--alert .metric__value { color: var(--orange); }
.metric--alert::before { background: linear-gradient(180deg, var(--orange), #B85C1E); }
.metric--red .metric__value { color: var(--card-red); }
.metric--red::before { background: linear-gradient(180deg, var(--card-red), #8E2A1A); }
.metric--yellow .metric__value { color: var(--card-yellow); }
.metric--yellow::before { background: linear-gradient(180deg, var(--card-yellow), #A9861A); }

.season-strip {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding-block: 0.4rem;
  overflow-x: auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}
.season-strip::-webkit-scrollbar { height: 4px; }
.season-strip::-webkit-scrollbar-track { background: transparent; }
.season-strip::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 2px;
}

.season-chip {
  flex: 0 0 auto;
  padding: 0.42rem 0.85rem;
  border: 1px solid transparent;
  border-radius: var(--radius-tag);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease),
    background 0.2s var(--ease);
}
.season-chip:hover,
.season-chip:focus-visible {
  color: var(--paper);
  border-color: var(--line);
}
.season-chip[data-active],
.season-chip[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
  font-weight: 700;
}

[data-chip-target] { display: none; }
[data-chip-target][data-active] { display: block; }

/* ---------- 7. 媒体容器（页面阶段放图） ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 140px;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid var(--line);
  border-radius: var(--radius-soft);
  background:
    radial-gradient(120% 90% at 18% 8%, rgba(18, 169, 143, 0.24), transparent 62%),
    linear-gradient(160deg, var(--ink-700), var(--ink-800));
}

.media-frame > img,
.media-frame > svg,
.media-frame > video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__tag {
  position: absolute;
  left: 0.85rem;
  bottom: 0.85rem;
  z-index: 2;
  padding: 0.24rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-tag);
  background: rgba(10, 21, 18, 0.78);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

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

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 1.15rem var(--gutter) 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--line);
}
.breadcrumb__link { color: var(--muted); transition: color 0.2s var(--ease); }
.breadcrumb__link:hover,
.breadcrumb__link:focus-visible { color: var(--cyan); }
.breadcrumb__current { color: var(--paper); }

/* ---------- 9. 显现与返回顶部 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 80;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(23, 48, 42, 0.92);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease),
    visibility 0.3s var(--ease), border-color 0.2s var(--ease);
}
.to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.to-top:hover,
.to-top:focus-visible { border-color: var(--cyan); }

/* ---------- 10. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(10, 21, 18, 0.92);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: 200;
  padding: 0.65rem 1.15rem;
  border-radius: 0 0 8px 8px;
  background: var(--cyan);
  color: var(--ink-900);
  font-size: 0.85rem;
  font-weight: 700;
  transition: top 0.2s var(--ease);
}
.skip-link:focus {
  top: 0;
}

.header__inner {
  display: grid;
  grid-template-columns: auto minmax(24px, 1fr) auto auto auto;
  align-items: center;
  gap: clamp(1rem, 2vw, 2.25rem);
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6rem;
  white-space: nowrap;
}
.brand__mark {
  position: relative;
  font-size: clamp(1.12rem, 1.4vw, 1.4rem);
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--paper);
}
.brand__mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -5px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}
.brand__suffix {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.header__rule {
  display: block;
  width: 100%;
  height: 1px;
  min-width: 24px;
  background-image: repeating-linear-gradient(
    to right,
    var(--line) 0 4px,
    transparent 4px 10px
  );
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.6vw, 1.5rem);
}
.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(0.3rem, 1.1vw, 1.1rem);
}
.nav__item { display: block; }
.nav__link {
  position: relative;
  display: inline-block;
  padding: 0.45rem 0.2rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.22s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0.2rem;
  right: 0.2rem;
  bottom: 0.12rem;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.28s var(--ease);
}
.nav__link:hover,
.nav__link:focus-visible { color: var(--paper); }
.nav__link:hover::after,
.nav__link:focus-visible::after { transform: scaleX(1); }
.nav__link[aria-current="page"] {
  color: var(--cyan);
  font-weight: 700;
}
.nav__link[aria-current="page"]::after { transform: scaleX(1); }

.nav__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.32rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  white-space: nowrap;
}
.nav__badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(63, 232, 196, 0.16);
  flex: 0 0 auto;
}

.header__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1.05rem;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  background: var(--cyan);
  color: var(--ink-900);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: background 0.22s var(--ease), border-color 0.22s var(--ease),
    transform 0.22s var(--ease);
}
.header__cta:hover,
.header__cta:focus-visible {
  background: var(--orange);
  border-color: var(--orange);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--ink-800);
}
.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--paper);
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) 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(-7px) rotate(-45deg);
}

.scroll-line {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--cyan), var(--cyan-dim) 62%, var(--orange));
  pointer-events: none;
}

/* ---------- 11. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(4rem, 9vw, 8rem);
  overflow: hidden;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 58%, #0B1A16 100%);
}

.footer__glow {
  position: absolute;
  left: 18%;
  right: -12%;
  bottom: -180px;
  height: 420px;
  pointer-events: none;
  background:
    radial-gradient(58% 100% at 42% 100%, rgba(63, 232, 196, 0.16), transparent 70%),
    radial-gradient(40% 90% at 84% 100%, rgba(255, 138, 60, 0.1), transparent 72%);
}

.footer__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(220px, 1.15fr) minmax(0, 2fr) minmax(210px, 1fr);
  gap: clamp(2rem, 4.5vw, 4.5rem);
  align-items: start;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(2.75rem, 5.5vw, 4.75rem) var(--gutter) clamp(1.75rem, 3.5vw, 3rem);
}

.footer__brand-name {
  font-size: clamp(1.3rem, 1.1rem + 0.7vw, 1.65rem);
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--paper);
}
.footer__suffix {
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}
.footer__meta {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}
.footer__note {
  max-width: 32ch;
  margin-top: 0.9rem;
  font-size: 0.82rem;
  line-height: 1.85;
  color: var(--muted);
}

.footer__columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2.5rem);
}
.footer__col { min-width: 0; }

.footer__col-title {
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.footer__list {
  display: grid;
  gap: 0.6rem;
}
.footer__link {
  display: inline-flex;
  align-items: center;
  font-size: 0.9rem;
  color: rgba(234, 244, 239, 0.78);
  transition: color 0.2s var(--ease);
}
.footer__link::before {
  content: "";
  display: inline-block;
  width: 0;
  height: 1px;
  margin-right: 0;
  background: var(--cyan);
  transition: width 0.22s var(--ease), margin-right 0.22s var(--ease);
}
.footer__link:hover,
.footer__link:focus-visible { color: var(--cyan); }
.footer__link:hover::before,
.footer__link:focus-visible::before {
  width: 10px;
  margin-right: 6px;
}

.footer__contact-list {
  display: grid;
  gap: 0.85rem;
}
.footer__contact-item {
  display: grid;
  gap: 0.15rem;
}
.footer__label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.footer__value {
  font-size: 0.86rem;
  line-height: 1.7;
  color: rgba(234, 244, 239, 0.88);
  word-break: break-word;
}

.footer__base {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 1.15rem var(--gutter) clamp(1.75rem, 3vw, 2.5rem);
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.footer__icp { color: var(--muted); }

/* ---------- 12. 响应式 ---------- */
@media (min-width: 941px) and (max-width: 1180px) {
  .nav__badge { display: none; }
}

@media (max-width: 1080px) {
  .header__cta { display: none; }
  .footer__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr);
  }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 940px) {
  :root { --header-h: 66px; }

  .site-header {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    background: var(--ink-900);
  }

  .header__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.75rem;
  }

  .header__rule { display: none; }

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

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    z-index: 85;
    display: block;
    max-height: 0;
    padding: 0 var(--gutter);
    overflow: hidden;
    visibility: hidden;
    opacity: 0;
    background: var(--ink-700);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 28px 56px rgba(0, 0, 0, 0.6);
    transition: max-height 0.4s var(--ease), opacity 0.28s var(--ease),
      visibility 0.4s var(--ease), padding 0.4s var(--ease);
  }
  .site-nav[data-open] {
    max-height: min(76vh, 620px);
    overflow-y: auto;
    visibility: visible;
    opacity: 1;
    padding: 1rem var(--gutter) 1.75rem;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav__item + .nav__item { border-top: 1px solid var(--line-soft); }
  .nav__link {
    display: block;
    padding: 0.9rem 0.25rem;
    font-size: 1.02rem;
  }
  .nav__link::after { display: none; }

  .nav__badge { margin-top: 1.1rem; }

  .footer__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 2.25rem;
  }
  .footer__brand { grid-column: auto; }
}

@media (max-width: 760px) {
  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-4,
  .col-6,
  .col-8 { grid-column: span 6; }

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

  .section__head {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
  }

  .footer__columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.75rem 1.25rem;
  }
  .footer__col:last-child { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .grid--12 { grid-template-columns: minmax(0, 1fr); }
  .col-4,
  .col-6,
  .col-8,
  .col-12 { grid-column: span 1; }

  .footer__base {
    flex-direction: column;
    align-items: flex-start;
  }

  .media-frame { min-height: 120px; }
}

/* ---------- 13. 减弱动效 ---------- */
@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;
    transition-delay: 0ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
  .scroll-line { transition: none; }
}