/* ============================================================
   乐鱼体育视频 · 共享站点样式 /assets/site.css
   深海蓝底 · 冰蓝数据线 · 荧光橙行动 · 粗野 Bento 砖块
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root {
  --deep: #061A2F;
  --navy: #0B2A4A;
  --arena: #0E4C8A;
  --orange: #FF6A1A;
  --amber: #FFB067;
  --ice: #7FDBFF;
  --white: #F7FBFF;
  --mist: #A9BED2;
  --mint: #39E6C4;
  --alert: #FF3D5A;
  --snow: #E8F4FF;

  --line: rgba(127, 219, 255, 0.22);
  --line-strong: rgba(127, 219, 255, 0.45);
  --line-soft: rgba(127, 219, 255, 0.12);

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

  --shell: min(1240px, calc(100% - 40px));
  --r-pill: 999px;
  --r-lg: 26px;
  --r-md: 18px;
  --r-sm: 12px;

  --hard: 6px 6px 0 rgba(2, 10, 20, 0.9);
  --hard-soft: 4px 4px 0 rgba(2, 10, 20, 0.75);
  --glow-orange: 0 0 22px rgba(255, 106, 26, 0.45);
  --speed: 180ms;
  --ease: cubic-bezier(0.3, 0.7, 0.4, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: clamp(15px, 0.5vw + 14px, 17px);
  line-height: 1.75;
  font-weight: 400;
  background-color: var(--deep);
  background-image:
    radial-gradient(980px 560px at 84% -12%, rgba(14, 76, 138, 0.55), transparent 62%),
    radial-gradient(720px 440px at 2% 8%, rgba(127, 219, 255, 0.10), transparent 62%),
    radial-gradient(900px 600px at 50% 118%, rgba(11, 42, 74, 0.85), transparent 70%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--ice); text-underline-offset: 4px; }
a:hover { color: var(--white); }

ul, ol { padding-left: 1.2em; }

::selection {
  background: var(--orange);
  color: var(--deep);
}

/* ---------- 3. 中文排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.6em;
  font-family: var(--font-sans);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--white);
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 4.4rem);
  transform: skewX(-1.2deg);
  transform-origin: left center;
  padding-right: 0.1em;
}

h2 { font-size: clamp(1.55rem, 2.9vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 1.8vw, 1.55rem); }
h4 { font-size: clamp(1.02rem, 1.2vw, 1.18rem); }

p { margin: 0 0 1.15em; max-width: 70ch; }
p:last-child { margin-bottom: 0; }

strong { color: var(--white); font-weight: 800; }

small { font-size: 0.82em; color: var(--mist); }

hr {
  height: 0;
  margin: 2.4em 0;
  border: 0;
  border-top: 2px solid var(--line);
}

/* ---------- 4. 工具与布局 ---------- */
.shell {
  width: var(--shell);
  margin-inline: auto;
}

.section {
  padding-block: clamp(34px, 5vw, 74px);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px 26px;
  margin-bottom: clamp(16px, 2.2vw, 28px);
}

.section-head__title {
  margin: 0;
  font-size: clamp(1.4rem, 2.4vw, 2.1rem);
}

.section-head__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.visually-hidden {
  position: absolute !important;
  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;
}

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

.glow {
  color: var(--amber);
  text-shadow: 0 0 22px rgba(255, 106, 26, 0.55);
}

#main-content {
  display: block;
  scroll-margin-top: 110px;
}

#main-content:focus-visible {
  outline: 3px solid var(--ice);
  outline-offset: -3px;
}

/* ---------- 5. 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(16px, 2vw, 24px);
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.crumbs a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--speed) var(--ease), color var(--speed) var(--ease);
}

.crumbs a:hover,
.crumbs a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--orange);
}

.crumbs__sep {
  color: rgba(169, 190, 210, 0.45);
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.74em 1.32em;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.01em;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition:
    transform var(--speed) var(--ease),
    box-shadow var(--speed) var(--ease),
    background-color var(--speed) var(--ease),
    border-color var(--speed) var(--ease),
    color var(--speed) var(--ease);
}

.btn--primary {
  color: var(--deep);
  background: linear-gradient(118deg, var(--orange), var(--amber) 92%);
  border-color: rgba(6, 26, 47, 0.45);
  box-shadow: 0 0 18px rgba(255, 106, 26, 0.34);
}

.btn--primary:hover {
  color: var(--deep);
  transform: translate(-1px, -2px);
  box-shadow: 0 0 28px rgba(255, 106, 26, 0.6), 3px 3px 0 rgba(2, 10, 20, 0.85);
}

.btn--ghost {
  color: var(--ice);
  background: transparent;
  border-color: var(--line-strong);
}

.btn--ghost:hover {
  color: var(--white);
  background: rgba(14, 76, 138, 0.5);
  border-color: var(--ice);
  transform: translate(-1px, -1px);
}

.btn--small {
  padding: 0.52em 1em;
  font-size: 0.8rem;
}

.btn:focus-visible {
  outline: 3px solid var(--white);
  outline-offset: 3px;
}

/* ---------- 7. 标签与筛选 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.3em 0.82em;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--ice);
  text-decoration: none;
  background: rgba(14, 76, 138, 0.3);
  border: 1.5px solid var(--line-strong);
  border-radius: var(--r-pill);
}

.tag--live {
  color: var(--deep);
  font-weight: 700;
  background: linear-gradient(120deg, var(--orange), var(--amber));
  border-color: transparent;
  box-shadow: var(--glow-orange);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.46em 1.05em;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--mist);
  background: rgba(11, 42, 74, 0.72);
  border: 2px solid var(--line);
  border-radius: var(--r-pill);
  cursor: pointer;
  transition:
    color var(--speed) var(--ease),
    border-color var(--speed) var(--ease),
    background var(--speed) var(--ease),
    transform var(--speed) var(--ease);
}

.chip:hover {
  color: var(--white);
  border-color: var(--ice);
  transform: translateY(-1px);
}

.chip[aria-pressed="true"] {
  color: var(--deep);
  background: linear-gradient(120deg, var(--orange), var(--amber));
  border-color: transparent;
  box-shadow: var(--glow-orange);
}

.chip:focus-visible {
  outline: 3px solid var(--ice);
  outline-offset: 3px;
}

/* ---------- 8. 面板与网格 ---------- */
.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 30px);
  background: linear-gradient(160deg, rgba(11, 42, 74, 0.95), rgba(6, 26, 47, 0.96));
  border: 2px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--hard);
  transition:
    border-color var(--speed) var(--ease),
    box-shadow var(--speed) var(--ease),
    transform var(--speed) var(--ease);
}

.panel:hover {
  border-color: var(--line-strong);
  box-shadow: -4px 6px 0 rgba(2, 10, 20, 0.9), 0 0 24px rgba(127, 219, 255, 0.14);
  transform: translateY(-2px);
}

.panel--focus {
  border-color: rgba(255, 106, 26, 0.55);
  box-shadow: var(--hard), 0 0 38px rgba(255, 106, 26, 0.18);
}

.panel--focus:hover {
  border-color: var(--orange);
  box-shadow: -4px 6px 0 rgba(2, 10, 20, 0.9), 0 0 42px rgba(255, 106, 26, 0.3);
}

.panel__eyebrow {
  display: block;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ice);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(14px, 1.7vw, 22px);
}

.grid--bento {
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

@media (max-width: 1024px) {
  .span-3, .span-4, .span-5 { grid-column: span 6; }
  .span-7, .span-8, .span-9 { grid-column: span 12; }
}

@media (max-width: 700px) {
  .span-3, .span-4, .span-5, .span-6 { grid-column: span 12; }
}

/* ---------- 9. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background:
    radial-gradient(120% 90% at 78% 8%, rgba(255, 176, 103, 0.24), transparent 58%),
    linear-gradient(152deg, var(--arena), var(--navy) 55%, var(--deep));
  border: 2px solid var(--line-strong);
  border-radius: var(--r-md);
  box-shadow: var(--hard-soft);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.04);
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }

.media-frame__caption {
  position: absolute;
  left: 12px;
  bottom: 12px;
  right: 12px;
  padding: 0.42em 0.9em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--white);
  background: rgba(6, 26, 47, 0.82);
  border: 1.5px solid var(--line-strong);
  border-radius: var(--r-pill);
  backdrop-filter: blur(6px);
}

/* ---------- 10. 页头 · 悬浮胶囊浮岛 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  padding: 16px 0 14px;
  background: linear-gradient(180deg, var(--deep) 0%, rgba(6, 26, 47, 0.92) 60%, rgba(6, 26, 47, 0) 100%);
}

.skip-link {
  position: fixed;
  top: -90px;
  left: 18px;
  z-index: 120;
  padding: 0.7em 1.25em;
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--deep);
  background: var(--white);
  border-radius: var(--r-pill);
  text-decoration: none;
  box-shadow: 0 0 0 3px var(--orange);
  transition: top 160ms var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 14px;
  color: var(--deep);
  outline: none;
}

.scroll-meter {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--ice), var(--orange) 88%);
  box-shadow: 0 0 14px rgba(255, 106, 26, 0.55);
  pointer-events: none;
  z-index: 90;
}

.header-rail {
  position: relative;
  width: var(--shell);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.4vw, 22px);
  padding: 10px 12px 10px 14px;
  background: linear-gradient(118deg, rgba(11, 42, 74, 0.94), rgba(6, 26, 47, 0.9));
  border: 2px solid var(--line);
  border-radius: var(--r-pill);
  box-shadow: 0 12px 32px rgba(2, 10, 20, 0.55), inset 0 1px 0 rgba(232, 244, 255, 0.12);
  backdrop-filter: blur(14px);
  transition:
    padding 220ms var(--ease),
    border-radius 220ms var(--ease),
    box-shadow 220ms var(--ease),
    border-color 220ms var(--ease);
}

.site-header[data-condensed="true"] .header-rail {
  padding: 5px 10px 5px 12px;
  border-radius: 20px;
  border-color: var(--line-strong);
  box-shadow: 0 8px 20px rgba(2, 10, 20, 0.62);
}

/* 品牌标记 */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  padding: 3px;
  color: var(--white);
  text-decoration: none;
  border-radius: var(--r-pill);
}

.brand:hover { color: var(--white); }

.brand:focus-visible {
  outline: 3px solid var(--ice);
  outline-offset: 4px;
}

.brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  border-radius: 14px 5px 14px 5px;
  background: linear-gradient(140deg, var(--orange), var(--amber) 72%);
  box-shadow: 4px 4px 0 rgba(127, 219, 255, 0.32);
  transform: rotate(-6deg);
  transition: transform 220ms var(--ease), width 220ms var(--ease), height 220ms var(--ease);
}

.brand:hover .brand__mark {
  transform: rotate(3deg) scale(1.05);
}

.brand__puck {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--deep);
  box-shadow: inset 0 0 0 3px rgba(232, 244, 255, 0.6);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.16;
}

.brand__name {
  font-size: 1.06rem;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.brand__tagline {
  max-height: 20px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.07em;
  color: var(--mist);
  white-space: nowrap;
  transition: opacity 200ms var(--ease), max-height 200ms var(--ease);
}

.site-header[data-condensed="true"] .brand__tagline {
  opacity: 0;
  max-height: 0;
}

.site-header[data-condensed="true"] .brand__mark {
  width: 34px;
  height: 34px;
  border-radius: 11px 4px 11px 4px;
}

/* 胶囊导航 */
.nav-capsule {
  display: flex;
  align-items: center;
  gap: clamp(6px, 0.8vw, 14px);
  margin-left: auto;
}

.nav-capsule__list {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-capsule__item { margin: 0; }

.nav-capsule__link {
  display: inline-block;
  padding: 0.5em 0.82em;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--mist);
  text-decoration: none;
  border: 1.5px solid transparent;
  border-radius: var(--r-pill);
  transition:
    color var(--speed) var(--ease),
    background-color var(--speed) var(--ease),
    border-color var(--speed) var(--ease);
}

.nav-capsule__link:hover {
  color: var(--white);
  background: rgba(14, 76, 138, 0.62);
  border-color: var(--line-strong);
}

.nav-capsule__link:focus-visible {
  outline: 3px solid var(--ice);
  outline-offset: 2px;
  color: var(--white);
}

.nav-capsule__link[aria-current="page"] {
  color: var(--white);
  font-weight: 800;
  background: rgba(127, 219, 255, 0.14);
  border-color: var(--ice);
  box-shadow: inset 0 -2px 0 var(--orange);
}

.nav-capsule__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-left: 10px;
  border-left: 1.5px solid rgba(127, 219, 255, 0.18);
}

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 0.52em 0.95em;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ice);
  background: rgba(14, 76, 138, 0.4);
  border: 2px solid var(--line-strong);
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: color var(--speed) var(--ease), border-color var(--speed) var(--ease), background var(--speed) var(--ease);
}

.nav-toggle:hover {
  color: var(--white);
  border-color: var(--ice);
  background: rgba(14, 76, 138, 0.68);
}

.nav-toggle:focus-visible {
  outline: 3px solid var(--white);
  outline-offset: 3px;
}

.nav-toggle__bars {
  position: relative;
  display: inline-block;
  width: 18px;
  height: 12px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 180ms var(--ease), top 180ms var(--ease);
}

.nav-toggle__bars::before { top: 2px; }
.nav-toggle__bars::after { top: 8px; }

.site-header[data-open="true"] .nav-toggle {
  color: var(--deep);
  background: linear-gradient(120deg, var(--orange), var(--amber));
  border-color: transparent;
}

.site-header[data-open="true"] .nav-toggle__bars::before {
  top: 5px;
  transform: rotate(45deg);
}

.site-header[data-open="true"] .nav-toggle__bars::after {
  top: 5px;
  transform: rotate(-45deg);
}

/* ---------- 11. 页头响应式 ---------- */
@media (max-width: 1200px) {
  .nav-capsule__link { font-size: 0.84rem; padding: 0.5em 0.66em; }
  .nav-capsule__actions .btn--ghost { display: none; }
}

@media (max-width: 1024px) {
  .site-header { padding: 10px 0 8px; }
  .header-rail { padding: 8px 10px 8px 12px; }
  .nav-toggle { display: inline-flex; }
  .brand__tagline { display: none; }

  .nav-capsule {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    margin-left: 0;
    padding: 14px;
    background: linear-gradient(160deg, rgba(11, 42, 74, 0.99), rgba(6, 26, 47, 0.99));
    border: 2px solid var(--line-strong);
    border-radius: 24px;
    box-shadow: 0 22px 46px rgba(2, 10, 20, 0.68);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity 180ms var(--ease), transform 180ms var(--ease), visibility 180ms linear;
  }

  .site-header[data-open="true"] .nav-capsule {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-capsule__list {
    flex-direction: column;
    align-items: stretch;
    gap: 3px;
  }

  .nav-capsule__link {
    display: block;
    padding: 0.72em 0.9em;
    font-size: 0.95rem;
    border-radius: 14px;
  }

  .nav-capsule__link[aria-current="page"] {
    box-shadow: inset 3px 0 0 var(--orange);
  }

  .nav-capsule__actions {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 12px 0 0;
    border-left: 0;
    border-top: 1.5px solid rgba(127, 219, 255, 0.18);
  }

  .nav-capsule__actions .btn { width: 100%; }
  .nav-capsule__actions .btn--ghost { display: inline-flex; }
}

@media (max-width: 420px) {
  .brand__name { font-size: 0.96rem; }
  .nav-toggle__label { display: none; }
  .nav-toggle { padding: 0.6em 0.8em; }
}

/* ---------- 12. 页脚 · 冰面宽幅 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(56px, 8vw, 110px);
  padding: clamp(40px, 5vw, 74px) 0 30px;
  color: var(--mist);
  background-color: var(--deep);
  background-image: linear-gradient(180deg, rgba(11, 42, 74, 0.72), var(--deep) 48%);
  border-top: 2px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(760px 340px at 88% -6%, rgba(14, 76, 138, 0.72), transparent 72%),
    radial-gradient(520px 320px at 4% 108%, rgba(127, 219, 255, 0.10), transparent 70%),
    repeating-linear-gradient(112deg, rgba(127, 219, 255, 0.075) 0 1px, transparent 1px 30px);
}

.site-footer::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -60px;
  width: 380px;
  height: 380px;
  z-index: 0;
  pointer-events: none;
  opacity: 0.16;
  border-radius: 50%;
  background-image: radial-gradient(rgba(232, 244, 255, 0.9) 1px, transparent 1px);
  background-size: 17px 17px;
}

.footer-grid {
  position: relative;
  z-index: 1;
  width: var(--shell);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(250px, 1.55fr) minmax(140px, 0.72fr) minmax(150px, 0.78fr) minmax(230px, 1.15fr);
  gap: clamp(24px, 3vw, 48px);
  align-items: start;
}

.footer-brand__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  text-decoration: none;
  border-radius: var(--r-sm);
}

.footer-brand__link:focus-visible {
  outline: 3px solid var(--ice);
  outline-offset: 4px;
}

.footer-brand__mark {
  display: inline-block;
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  border-radius: 5px 2px 5px 2px;
  background: linear-gradient(140deg, var(--orange), var(--amber));
  box-shadow: 0 0 16px rgba(255, 106, 26, 0.55);
  transform: rotate(-8deg);
}

.footer-brand__word {
  font-size: clamp(1.3rem, 2vw, 1.6rem);
  font-weight: 900;
  letter-spacing: 0.02em;
}

.footer-brand__summary {
  margin: 16px 0 20px;
  max-width: 32ch;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--mist);
}

.footer-col__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--ice);
  line-height: 1.5;
}

.footer-col__list {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 0.94rem;
  color: var(--mist);
  text-decoration: none;
  transition: color var(--speed) var(--ease);
}

.footer-link::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: 2px;
  background: var(--ice);
  opacity: 0.5;
  transition: background var(--speed) var(--ease), opacity var(--speed) var(--ease), transform var(--speed) var(--ease);
}

.footer-link:hover {
  color: var(--white);
}

.footer-link:hover::before {
  background: var(--orange);
  opacity: 1;
  transform: rotate(45deg);
}

.footer-link:focus-visible {
  outline: 3px solid var(--ice);
  outline-offset: 3px;
  color: var(--white);
}

.footer-contact__list {
  display: grid;
  gap: 14px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.footer-contact__line {
  display: grid;
  gap: 2px;
  padding-left: 12px;
  border-left: 2px solid var(--line-soft);
}

.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: rgba(127, 219, 255, 0.85);
}

.footer-contact__value {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--white);
  word-break: break-word;
}

.footer-contact__note {
  margin: 0;
  max-width: 30ch;
  font-size: 0.78rem;
  line-height: 1.7;
  color: rgba(169, 190, 210, 0.82);
}

.footer-base {
  position: relative;
  z-index: 1;
  width: var(--shell);
  margin: clamp(32px, 4vw, 56px) auto 0;
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 26px;
  border-top: 1.5px solid rgba(127, 219, 255, 0.18);
}

.footer-base__legal,
.footer-base__icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: rgba(169, 190, 210, 0.8);
}

.footer-base__icp {
  color: var(--ice);
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-base { flex-direction: column; align-items: flex-start; }
}

/* ---------- 13. 全局焦点与动效偏好 ---------- */
:focus-visible {
  outline: 3px solid var(--ice);
  outline-offset: 3px;
}

@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;
  }

  .panel:hover,
  .btn:hover,
  .chip:hover,
  .brand:hover .brand__mark {
    transform: none;
  }
}