/* ============================================================
   易倍看台 · 全站共享样式
   文件：/assets/site.css
   包含：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ============================================================ */

:root{
  --bg:#070C16;
  --panel:#0E1726;
  --lift:#16233A;
  --green:#2BFF88;
  --amber:#FFB020;
  --ice:#EEF3FA;
  --mist:#8FA0B8;
  --line:#24334C;
  --cyan:#4FD1FF;
  --green-ink:#0B3A26;

  --shadow-1:0 1px 0 rgba(255,255,255,.03), 0 14px 30px -24px rgba(0,0,0,.95);
  --shadow-2:0 28px 64px -36px rgba(0,0,0,.95);

  --radius:6px;
  --radius-sm:3px;
  --wrap:1240px;
  --pad:clamp(16px,4vw,40px);

  --font-display:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --font-body:Inter,"Noto Sans SC",system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-padding-top:130px;
  background:var(--bg);
}

body{
  margin:0;
  background:var(--bg);
  color:var(--ice);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

img,picture,svg,video{max-width:100%;display:block}
img{height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,h5{
  margin:0;
  font-family:var(--font-display);
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.25;
}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
hr{border:0;border-top:1px solid var(--line);margin:0}

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

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

/* ---------- 中文排版基础 ---------- */
.prose{
  font-size:16px;
  line-height:1.8;
  color:var(--ice);
}
.prose p,
.prose li,
.prose blockquote{
  max-width:62ch;
  margin:0 0 1.05em;
  rgba:0;
}
.prose h2,.prose h3{margin:1.6em 0 .6em}
.prose strong{color:var(--green);font-weight:600}
.prose a{
  color:var(--green);
  border-bottom:1px solid rgba(43,255,136,.35);
}
.prose a:hover{border-bottom-color:var(--green)}

.lead{
  font-size:clamp(15px,1.5vw,17px);
  line-height:1.75;
  color:var(--mist);
  max-width:58ch;
}

.mono,.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
}

.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 布局壳 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--pad);
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;
  left:-9999px;
  top:0;
  z-index:200;
  font-size:14px;
  font-weight:600;
}
.skip-link:focus{
  left:16px;
  top:10px;
  padding:10px 18px;
  background:var(--green);
  color:#04140C;
  border-radius:var(--radius-sm);
  outline-offset:3px;
}

/* ============================================================
   头部
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:linear-gradient(180deg,rgba(14,23,38,.98) 0%,rgba(7,12,22,.95) 100%);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg,var(--green) 0%,rgba(43,255,136,.15) 34%,transparent 62%);
}

/* 上层窄带 */
.header-top{
  border-bottom:1px solid rgba(36,51,76,.72);
}
.header-top__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:46px;
  padding-block:7px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  min-width:0;
}
.brand__mark{
  position:relative;
  flex:none;
  width:26px;
  height:26px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--panel);
}
.brand__mark::before{
  content:"";
  position:absolute;
  inset:5px;
  border:1px solid var(--green);
  transform:rotate(45deg);
}
.brand__mark::after{
  content:"";
  position:absolute;
  inset:11px;
  background:var(--green);
  border-radius:1px;
}
.brand__text{
  display:flex;
  flex-direction:column;
  gap:2px;
  min-width:0;
}
.brand__name{
  font-family:var(--font-display);
  font-size:17px;
  font-weight:700;
  line-height:1.15;
  letter-spacing:-.01em;
  color:var(--ice);
}
.brand__tagline{
  font-size:11px;
  line-height:1.2;
  letter-spacing:.1em;
  color:var(--mist);
  display:none;
}
.brand--footer .brand__name{font-size:19px}

.header-meta{
  display:flex;
  align-items:center;
  gap:14px;
  margin:0;
  flex:none;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist);
}
.header-meta__lang{
  padding:3px 8px;
  border:1px solid var(--line);
  border-radius:2px;
  white-space:nowrap;
}
.header-meta__phase{
  display:inline-flex;
  align-items:center;
  gap:7px;
  white-space:nowrap;
}
.header-meta__dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--green);
  box-shadow:0 0 0 3px rgba(43,255,136,.14);
  animation:pulse-dot 2.4s ease-in-out infinite;
}
@keyframes pulse-dot{
  0%,100%{opacity:1}
  50%{opacity:.35}
}

/* 下层栏目带 */
.header-main__inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:16px;
  min-height:60px;
}

.primary-nav{margin-right:auto}
.primary-nav__list{
  display:flex;
  align-items:center;
  gap:2px;
}
.primary-nav__link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:7px;
  padding:8px 12px;
  border-radius:var(--radius-sm);
  font-size:15px;
  color:var(--mist);
  white-space:nowrap;
  transition:color .18s ease,background-color .18s ease;
}
.primary-nav__link:hover{
  color:var(--ice);
  background:rgba(22,35,58,.7);
}
.primary-nav__idx{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.06em;
  opacity:.5;
  transition:opacity .18s ease,color .18s ease;
}
.primary-nav__link[aria-current="page"]{
  color:var(--ice);
}
.primary-nav__link[aria-current="page"] .primary-nav__idx{
  color:var(--green);
  opacity:1;
}
.primary-nav__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--green);
}

.header-cta{flex:none}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:8px 13px;
  background:var(--lift);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  color:var(--ice);
  font-size:13px;
  letter-spacing:.08em;
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--green);color:var(--green)}
.nav-toggle__bars{
  display:grid;
  gap:3px;
  width:16px;
}
.nav-toggle__bars i{
  display:block;
  height:1px;
  background:currentColor;
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle[data-open] .nav-toggle__bars i:nth-child(1){transform:translateY(4px) rotate(45deg)}
.nav-toggle[data-open] .nav-toggle__bars i:nth-child(2){opacity:0}
.nav-toggle[data-open] .nav-toggle__bars i:nth-child(3){transform:translateY(-4px) rotate(-45deg)}

/* 移动端底部快捷坞（桌面隐藏） */
.dock-nav{display:none}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  background:var(--panel);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  width:min(220px,32vw);
  height:1px;
  background:var(--green);
}

.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 2.1fr 1.15fr 1.25fr;
  gap:clamp(24px,4vw,52px);
  padding-block:clamp(38px,5.5vw,68px) clamp(26px,3.6vw,44px);
}

.footer-col{min-width:0}
.footer-col--groups{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}

.footer-col__title,
.footer-group__title{
  margin:0 0 14px;
  padding-bottom:8px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.16em;
  color:var(--mist);
}

.footer-list a{
  display:inline-block;
  padding:5px 0;
  font-size:14.5px;
  color:rgba(238,243,250,.86);
  transition:color .18s ease,padding-left .18s ease;
}
.footer-list a:hover{
  color:var(--green);
  padding-left:4px;
}

.footer-note{
  margin:14px 0 0;
  font-size:13.5px;
  line-height:1.75;
  color:var(--mist);
  max-width:36ch;
}
.footer-note--mono{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.05em;
  color:rgba(143,160,184,.82);
}

.footer-cadence{
  display:grid;
  gap:8px;
}
.footer-cadence li{
  display:grid;
  grid-template-columns:44px 1fr;
  gap:10px;
  align-items:baseline;
  font-size:13.5px;
  line-height:1.6;
}
.footer-cadence__k{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--green);
}
.footer-cadence__v{color:rgba(238,243,250,.82)}

.footer-cta{margin-top:16px}

.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding-block:18px 22px;
  border-top:1px solid var(--line);
}
.footer-base__copy{
  margin:0;
  font-size:13px;
  color:var(--mist);
}
.footer-base__copy [data-year]{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
}
.footer-base__note{
  margin:0;
  font-size:12px;
  letter-spacing:.04em;
  color:rgba(143,160,184,.78);
}

.season-bar{
  height:2px;
  background:rgba(36,51,76,.55);
  overflow:hidden;
}
.season-bar__fill{
  display:block;
  height:100%;
  width:var(--season-progress,60%);
  background:linear-gradient(90deg,var(--green),var(--cyan));
}

/* ============================================================
   通用组件
   ============================================================ */

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border:1px solid transparent;
  border-radius:var(--radius-sm);
  background:none;
  color:var(--ice);
  font-family:var(--font-body);
  font-size:15px;
  font-weight:600;
  line-height:1;
  text-align:center;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn--primary{
  background:var(--green);
  border-color:var(--green);
  color:#04140C;
}
.btn--primary:hover{background:#5BFFA6;border-color:#5BFFA6}
.btn--primary:active{background:var(--green-ink);border-color:var(--green);color:var(--green)}

.btn--ghost{
  background:rgba(22,35,58,.45);
  border-color:var(--line);
  color:var(--ice);
}
.btn--ghost:hover{border-color:var(--green);color:var(--green);background:rgba(43,255,136,.07)}
.btn--ghost:active{background:rgba(43,255,136,.14)}

.btn--amber{
  background:var(--amber);
  border-color:var(--amber);
  color:#1B1000;
}
.btn--amber:hover{background:#FFC24F;border-color:#FFC24F}

.btn--sm{padding:8px 14px;font-size:13px}

/* 面包屑 */
.crumbs{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--mist);
  padding-block:14px 0;
}
.crumbs__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.crumbs__list a{color:var(--mist);transition:color .18s ease}
.crumbs__list a:hover{color:var(--green)}
.crumbs__sep{color:var(--line)}

/* 章节 */
.section{padding-block:clamp(36px,5.5vw,76px)}
.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:clamp(20px,3vw,34px);
}
.section__title{
  font-size:clamp(24px,3.2vw,38px);
  color:var(--ice);
}
.section__meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--mist);
}

.chapter{
  position:relative;
  padding-block:clamp(44px,7vw,104px);
  border-top:1px solid var(--line);
}
.chapter__num{
  display:block;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(44px,8vw,92px);
  line-height:.9;
  letter-spacing:-.04em;
  color:var(--line);
  margin-bottom:10px;
}
.chapter__title{
  font-size:clamp(22px,3vw,36px);
  margin-bottom:14px;
}
.chapter__body{color:var(--mist)}

/* 网格 */
.grid{display:grid;gap:20px}
.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))}

/* 堆叠面板 */
.panel{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-1);
}
.panel--lift{
  background:var(--lift);
  border-color:#1E2E49;
}
.panel__head{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  padding:14px 18px;
  border-bottom:1px solid var(--line);
  font-size:15px;
  font-weight:600;
}
.panel__body{padding:18px}
.panel__body > p{color:var(--mist)}
.panel__foot{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:14px 18px;
  border-top:1px solid var(--line);
}

/* 展签式标签 */
.tag{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:4px 10px 4px 7px;
  border:1px solid var(--line);
  border-radius:2px;
  background:rgba(22,35,58,.7);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist);
  white-space:nowrap;
}
.tag__num{color:var(--green);font-weight:700}
.tag__cat{color:var(--ice)}
.tag__state{color:var(--mist)}
.tag--live .tag__state{color:var(--green)}
.tag--soon .tag__state{color:var(--amber)}

/* 数字与统计 */
.stat{
  display:flex;
  flex-direction:column;
  gap:2px;
}
.stat__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(26px,3.4vw,40px);
  line-height:1;
  letter-spacing:-.03em;
  color:var(--ice);
}
.stat__label{
  font-size:12px;
  letter-spacing:.1em;
  color:var(--mist);
}

/* 栏目切换 chips */
.chips{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.chip{
  padding:7px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
  color:var(--mist);
  font-family:var(--font-body);
  font-size:13px;
  line-height:1.2;
  cursor:pointer;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.chip:hover{color:var(--ice);border-color:#31435F}
.chip[aria-pressed="true"]{
  color:var(--green);
  border-color:rgba(43,255,136,.55);
  background:rgba(43,255,136,.09);
}

/* 折叠卡片 */
.fold{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--panel);
  overflow:hidden;
}
.fold + .fold{margin-top:10px}
.fold__summary{
  display:flex;
  align-items:center;
  gap:12px;
  padding:15px 18px;
  cursor:pointer;
  list-style:none;
  font-size:15px;
  font-weight:600;
  color:var(--ice);
}
.fold__summary::-webkit-details-marker{display:none}
.fold__summary::after{
  content:"";
  flex:none;
  width:8px;
  height:8px;
  margin-left:auto;
  border-right:1px solid var(--green);
  border-bottom:1px solid var(--green);
  transform:rotate(45deg);
  transition:transform .2s ease;
}
.fold[open] .fold__summary{border-bottom:1px solid var(--line)}
.fold[open] .fold__summary::after{transform:rotate(-135deg)}
.fold__body{
  padding:14px 18px 18px;
  font-size:15px;
  color:var(--mist);
}
.fold__body p{max-width:62ch}

/* 收藏栏 */
.favbar{
  padding:16px;
  background:var(--lift);
  border:1px solid #1E2E49;
  border-radius:var(--radius);
  box-shadow:var(--shadow-2);
}
.favbar__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:12px;
  margin-bottom:12px;
  border-bottom:1px solid var(--line);
  font-size:14px;
  font-weight:600;
}
.favbar__list{display:grid;gap:8px}
.favbar__item{
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 11px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:rgba(7,12,22,.55);
  font-size:14px;
  color:rgba(238,243,250,.9);
  transition:border-color .18s ease,background-color .18s ease;
}
.favbar__item:hover{border-color:rgba(43,255,136,.45);background:rgba(43,255,136,.06)}

/* 图片容器基础规则（页面阶段放置图片占位） */
.media{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:
    linear-gradient(135deg,rgba(43,255,136,.10),transparent 46%),
    linear-gradient(315deg,rgba(79,209,255,.13),transparent 52%),
    var(--panel);
}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--21x9{aspect-ratio:21/9}
.media__inner{position:absolute;inset:0}
.media__inner img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.82) contrast(1.06) brightness(.86);
}
.media__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:12px 14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--mist);
  background:linear-gradient(180deg,transparent,rgba(7,12,22,.92));
}
.media--grain::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:3px 3px;
  opacity:.55;
}

/* 滚动显现 */
.js [data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .24s ease,transform .24s ease;
}
.js [data-reveal].is-in{
  opacity:1;
  transform:none;
}

/* 回到顶部 */
.to-top{
  position:fixed;
  right:20px;
  bottom:26px;
  z-index:80;
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  padding:0;
  border:1px solid var(--line);
  border-radius:50%;
  background:var(--panel);
  color:var(--ice);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease,border-color .18s ease;
}
.to-top:hover{border-color:var(--green);color:var(--green)}
.to-top[data-visible]{
  opacity:1;
  visibility:visible;
  transform:none;
}
.to-top span{
  width:9px;
  height:9px;
  border-top:1px solid currentColor;
  border-left:1px solid currentColor;
  transform:rotate(45deg) translate(1px,1px);
}

/* ============================================================
   响应式
   ============================================================ */
@media (min-width:720px){
  .brand__tagline{display:block}
}

@media (max-width:1080px){
  .footer-grid{
    grid-template-columns:1.3fr 1.6fr 1fr;
    row-gap:36px;
  }
  .footer-col--legal{grid-column:1 / -1}
  .footer-col--legal .footer-list{
    display:flex;
    flex-wrap:wrap;
    gap:0 20px;
  }
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:900px){
  html{scroll-padding-top:110px}

  .header-main__inner{min-height:56px;gap:12px}

  .nav-toggle{display:inline-flex}
  .header-cta{margin-left:auto}

  .primary-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    margin-right:0;
    padding:10px 0 16px;
    background:var(--panel);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    box-shadow:0 26px 52px -28px rgba(0,0,0,.95);
    max-height:calc(100vh - 150px);
    overflow-y:auto;
  }
  .primary-nav[data-open]{display:block}
  .primary-nav__list{
    display:block;
    padding-inline:var(--pad);
  }
  .primary-nav__link{
    padding:13px 2px;
    border-bottom:1px solid rgba(36,51,76,.6);
    border-radius:0;
    font-size:16px;
  }
  .primary-nav__link::after{display:none}
  .primary-nav__link[aria-current="page"]{
    color:var(--ice);
    padding-left:14px;
    border-left:2px solid var(--green);
    background:rgba(43,255,136,.05);
  }
  .primary-nav__link[aria-current="page"] .primary-nav__idx{color:var(--green);opacity:1}

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

  .dock-nav{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    z-index:95;
    background:rgba(14,23,38,.97);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom,0px);
  }
  .dock-nav__item{
    position:relative;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:3px;
    padding:9px 4px 11px;
    color:var(--mist);
    font-size:12px;
    letter-spacing:.1em;
    transition:color .18s ease;
  }
  .dock-nav__item::before{
    content:"";
    position:absolute;
    top:0;
    left:50%;
    width:28px;
    height:2px;
    background:var(--green);
    transform:translateX(-50%) scaleX(0);
    transform-origin:center;
    transition:transform .22s ease;
  }
  .dock-nav__item[aria-current="page"]{color:var(--ice)}
  .dock-nav__item[aria-current="page"]::before{transform:translateX(-50%) scaleX(1)}
  .dock-nav__idx{
    font-family:var(--font-mono);
    font-size:10px;
    letter-spacing:0;
    opacity:.65;
  }

  body{padding-bottom:58px}
  .to-top{right:14px;bottom:74px}
}

@media (max-width:820px){
  .footer-grid{
    grid-template-columns:1fr 1fr;
    row-gap:32px;
  }
  .footer-col--brand{grid-column:1 / -1}
}

@media (max-width:640px){
  :root{--pad:16px}
  .section{padding-block:clamp(30px,7vw,54px)}
  .grid{gap:14px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr);row-gap:28px}
  .footer-col--groups{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-base{flex-direction:column;align-items:flex-start;gap:6px}
  .footer-note{max-width:none}
  .header-meta__lang{display:none}
}

@media (max-width:420px){
  .brand__mark{width:24px;height:24px}
  .brand__name{font-size:16px}
  .primary-nav__link{font-size:15px}
  .footer-col--groups{grid-template-columns:minmax(0,1fr)}
}

/* ============================================================
   动效降级
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  html{scroll-behavior:auto}
  .js [data-reveal]{
    opacity:1 !important;
    transform:none !important;
  }
  .header-meta__dot{animation:none}
  .season-bar__fill{transition:none}
}