/* =========================================================
   m6赛场登录 — 共享样式 /assets/site.css
   深靛蓝仪表台 × 米白画册纸面
   ========================================================= */

/* ---------- 01 Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,h5,h6,p,ul,ol,dl,figure,blockquote,address{margin:0}
ul,ol{list-style:none;padding:0}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
address{font-style:normal}
table{border-collapse:collapse}
main{display:block}
#main-content{scroll-margin-top:140px}

/* ---------- 02 变量 ---------- */
:root{
  --indigo-900:#0B1B33;
  --indigo-700:#13294B;
  --mineral:#F6F1E7;
  --stone:#8C8B84;
  --silver:#D9D5CC;
  --signal:#FF7A2F;
  --cyan:#2FD6C6;
  --moss:#4F6B4A;
  --clay:#B4664A;
  --ink:#12100E;
  --paper:#FFFDF8;
  --rail-w:240px;
  --pad:24px;
  --maxw:1280px;
  --font-head:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono","Courier New",monospace;
  --dur:180ms;
  --ease:cubic-bezier(.2,.8,.2,1);
}
html[data-rail="collapsed"]{--rail-w:64px}

/* ---------- 03 中文排版基座 ---------- */
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--ink);
  background:var(--mineral);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:900;line-height:1.28;letter-spacing:-.01em}
h1{font-size:40px}
h2{font-size:28px}
h3{font-size:20px}
h4{font-size:17px}
p{max-width:68ch}
strong,b{font-weight:700}
.mono{
  font-family:var(--font-mono);
  letter-spacing:.06em;
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
::selection{background:var(--signal);color:var(--ink)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

/* ---------- 04 布局容器与网格 ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}

.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.grid--tight{gap:14px}
.grid--wide{gap:40px}
.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}

.divider{position:relative;height:1px;background:var(--silver);margin:56px 0}
.divider::before{
  content:"";position:absolute;left:0;right:0;top:-8px;height:8px;
  background-image:repeating-linear-gradient(90deg,var(--silver) 0 1px,transparent 1px 80px);
}

/* ---------- 05 章节骨架 ---------- */
.section{padding:72px 0;border-top:1px solid var(--silver)}
.section:first-of-type{border-top:0}
.section__head{display:flex;gap:22px;align-items:stretch;margin-bottom:36px}
.section__index{
  flex:0 0 auto;
  writing-mode:vertical-rl;
  text-orientation:upright;
  font-family:var(--font-mono);
  font-size:13px;font-weight:700;letter-spacing:.22em;
  color:var(--indigo-700);
  border-left:2px solid var(--signal);
  padding:2px 0 2px 10px;
}
.section__titles{flex:1 1 auto;min-width:0}
.section__title{font-size:28px;font-weight:900}
.section__lead{margin-top:10px;font-size:15px;line-height:1.7;color:rgba(18,16,14,.64);max-width:64ch}

/* ---------- 06 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border:1px solid var(--ink);border-radius:0;
  font-size:15px;font-weight:700;letter-spacing:.03em;line-height:1.3;
  background:transparent;color:var(--ink);
  transition:background var(--dur) ease,color var(--dur) ease,border-color var(--dur) ease,transform var(--dur) ease;
}
.btn:hover{transform:translateY(-2px)}
.btn--signal{background:var(--signal);border-color:var(--signal);color:var(--ink)}
.btn--signal:hover{background:#ff8b46;border-color:#ff8b46}
.btn--dark{background:var(--indigo-900);border-color:var(--indigo-900);color:var(--mineral)}
.btn--dark:hover{background:var(--indigo-700);border-color:var(--indigo-700)}
.btn--ghost{border-color:var(--silver);color:var(--indigo-900)}
.btn--ghost:hover{border-color:var(--cyan);background:rgba(47,214,198,.1)}
.btn--block{width:100%}

/* ---------- 07 状态胶囊与信号灯 ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;border:1px solid transparent;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;line-height:1.6;
  background:rgba(140,139,132,.16);color:var(--indigo-700);
}
.pill--moss{background:var(--moss);color:var(--mineral)}
.pill--clay{background:var(--clay);color:var(--mineral)}
.pill--signal{background:var(--signal);color:var(--ink)}
.pill--line{background:transparent;border-color:var(--silver);color:var(--ink)}
.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--moss);flex:0 0 auto}
.status-dot--clay{background:var(--clay)}
.status-dot--signal{background:var(--signal)}

/* ---------- 08 数字锚点 / 卡片 / 表格 ---------- */
.stat__value{font-family:var(--font-mono);font-size:48px;font-weight:600;line-height:1;letter-spacing:-.02em;color:var(--indigo-900)}
.stat__label{margin-top:8px;font-size:13px;letter-spacing:.06em;color:var(--stone)}
.stat--signal .stat__value{color:var(--signal)}

.card{background:var(--paper);border:1px solid var(--silver);padding:24px;transition:border-color var(--dur) ease,transform var(--dur) ease}
.card:hover{border-color:var(--cyan);transform:translateY(-2px)}
.card--dark{background:var(--indigo-700);border-color:rgba(217,213,204,.2);color:var(--mineral)}
.card--dark .card__title{color:var(--mineral)}
.card__title{font-size:20px;font-weight:900;line-height:1.35}
.card__meta{margin-top:8px;font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;color:var(--stone)}
.card--dark .card__meta{color:rgba(246,241,231,.6)}

.table-scroll{width:100%;overflow-x:auto;border:1px solid var(--silver);background:var(--paper)}
.table{width:100%;min-width:560px;font-size:15px}
.table caption{caption-side:top;text-align:left;padding:14px 12px;font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--stone)}
.table th{
  text-align:left;padding:10px 12px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.12em;
  background:var(--indigo-700);color:var(--mineral);
}
.table td{padding:12px;border-bottom:1px solid var(--silver);vertical-align:top}
.table tbody tr:nth-child(even){background:rgba(217,213,204,.24)}
.table tbody tr:last-child td{border-bottom:0}
.table .mono{color:var(--indigo-900);font-weight:600}

/* ---------- 09 面包屑 ---------- */
.breadcrumbs{padding:22px 0 0;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--stone)}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumbs__item{display:flex;align-items:center;gap:8px}
.breadcrumbs__item::after{content:"/";color:var(--silver)}
.breadcrumbs__item:last-child::after{content:""}
.breadcrumbs__link{padding-bottom:2px;border-bottom:1px solid transparent;transition:color var(--dur) ease,border-color var(--dur) ease}
.breadcrumbs__link:hover{color:var(--indigo-900);border-bottom-color:var(--cyan)}
.breadcrumbs__item[aria-current="page"]{color:var(--indigo-900)}

/* ---------- 10 图片容器（可复用占位基座） ---------- */
.media-frame{
  position:relative;overflow:hidden;border:1px solid var(--silver);
  aspect-ratio:16 / 9;
  background-color:var(--indigo-900);
  background-image:
    repeating-linear-gradient(0deg,rgba(47,214,198,.14) 0 1px,transparent 1px 32px),
    repeating-linear-gradient(90deg,rgba(47,214,198,.14) 0 1px,transparent 1px 32px);
}
.media-frame > img,.media-frame > picture > img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:4 / 5}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame__tag{
  position:absolute;left:12px;bottom:12px;
  padding:4px 8px;border-left:2px solid var(--signal);
  background:rgba(11,27,51,.74);color:var(--mineral);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
}

/* ---------- 11 显现（渐进增强） ---------- */
.js-reveal [data-reveal]{opacity:0;transform:translateY(10px);transition:opacity 240ms ease-out,transform 240ms ease-out}
.js-reveal [data-reveal].is-in{opacity:1;transform:none}

/* =========================================================
   12 HEADER
   ========================================================= */
.skip-link{
  position:fixed;top:-100px;left:50%;transform:translateX(-50%);z-index:300;
  padding:10px 18px;background:var(--signal);color:var(--ink);
  font-size:14px;font-weight:700;letter-spacing:.04em;
  transition:top 160ms ease;
}
.skip-link:focus{top:8px}

.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--indigo-900);color:var(--mineral);
}

/* 声明条 */
.masthead{background:var(--indigo-900);border-bottom:1px solid rgba(217,213,204,.16)}
.masthead__inner{
  max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);
  min-height:60px;display:flex;align-items:center;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  width:34px;height:34px;display:grid;place-items:center;flex:0 0 auto;
  border:1px solid rgba(47,214,198,.6);background:rgba(47,214,198,.08);
  font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--cyan);
  transition:border-color var(--dur) ease,background var(--dur) ease;
}
.brand:hover .brand__mark{border-color:var(--cyan);background:rgba(47,214,198,.18)}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-family:var(--font-head);font-size:17px;font-weight:900;letter-spacing:.02em;color:var(--mineral)}
.brand__sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.24em;color:rgba(246,241,231,.55)}
.masthead__slogan{
  margin-left:auto;display:flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.06em;color:rgba(246,241,231,.78);
}
.masthead__slogan::before{content:"";width:22px;height:1px;background:var(--cyan);flex:0 0 auto}

/* 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;gap:8px;margin-left:auto;
  padding:8px 12px;border:1px solid rgba(217,213,204,.35);
  color:var(--mineral);font-size:13px;letter-spacing:.08em;
  transition:border-color var(--dur) ease,background var(--dur) ease;
}
.nav-toggle:hover{border-color:var(--cyan);background:rgba(47,214,198,.1)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:10px;flex:0 0 auto}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;right:0;height:1.5px;background:currentColor;
  transition:transform 180ms ease,top 180ms ease,bottom 180ms ease;
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:4px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{bottom:4px;transform:rotate(-45deg)}
.nav-toggle__label{font-family:var(--font-mono);letter-spacing:.14em}

/* 档位速览条 */
.tierstrip{background:var(--indigo-700);border-bottom:1px solid rgba(217,213,204,.2)}
.tierstrip__inner{
  max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);
  display:flex;align-items:stretch;gap:14px;min-height:52px;
  overflow-x:auto;scrollbar-width:none;
}
.tierstrip__inner::-webkit-scrollbar{display:none}
.tierstrip__label{
  display:flex;align-items:center;flex:0 0 auto;padding-right:14px;
  border-right:1px solid rgba(217,213,204,.2);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:rgba(246,241,231,.5);
}
.tierstrip__list{display:flex;align-items:stretch}
.tier{
  display:flex;align-items:center;gap:9px;padding:8px 16px;
  border-right:1px solid rgba(217,213,204,.14);white-space:nowrap;
  transition:background var(--dur) ease;
}
.tier:last-child{border-right:0}
.tier:hover{background:rgba(47,214,198,.12)}
.tier__code{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--cyan)}
.tier__price{font-family:var(--font-mono);font-size:16px;font-weight:600;letter-spacing:.04em;color:var(--mineral);font-variant-numeric:tabular-nums}
.tier__note{font-size:12px;color:rgba(246,241,231,.6)}

/* 搜索式跳转条 */
.jumpbar{position:relative;background:var(--mineral);border-bottom:1px solid var(--silver)}
.jumpbar__clip{overflow:hidden;max-height:96px;transition:max-height 220ms var(--ease),opacity 180ms ease}
.site-header[data-condensed] .jumpbar__clip{max-height:0;opacity:0}
.site-header[data-condensed] .jumpbar{border-bottom-color:transparent}
.jumpbar__inner{
  max-width:var(--maxw);margin:0 auto;padding:10px var(--pad);
  display:flex;align-items:center;gap:12px;
}
.jumpbar__label{flex:0 0 auto;font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--stone)}
.jumpbar__input{
  flex:1 1 auto;min-width:0;height:36px;padding:0 12px;
  border:1px solid var(--silver);background:var(--paper);
  font-size:14px;color:var(--ink);
  transition:border-color var(--dur) ease,box-shadow var(--dur) ease;
}
.jumpbar__input::placeholder{color:var(--stone)}
.jumpbar__input:focus{border-color:var(--cyan);box-shadow:inset 0 -2px 0 var(--cyan);outline:none}
.jumpbar__input:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.jumpbar__hint{flex:0 0 auto;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--stone)}
.jumpbar__results{
  position:absolute;top:100%;left:50%;transform:translateX(-50%);
  width:min(calc(100% - var(--pad) * 2),calc(var(--maxw) - var(--pad) * 2));
  max-height:320px;overflow:auto;z-index:95;
  background:var(--paper);border:1px solid var(--silver);border-top:2px solid var(--signal);
  box-shadow:0 20px 34px -22px rgba(11,27,51,.55);
}
.jumpbar__results[hidden]{display:none}
.jump-result{
  display:flex;align-items:baseline;gap:12px;padding:10px 14px;
  border-bottom:1px solid var(--silver);
  transition:background var(--dur) ease;
}
.jump-result:last-child{border-bottom:0}
.jump-result:hover{background:rgba(47,214,198,.1)}
.jump-result__code{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--signal)}
.jump-result__label{font-size:14px;font-weight:700;color:var(--indigo-900)}
.jump-result__route{margin-left:auto;font-family:var(--font-mono);font-size:11px;color:var(--stone)}
.jump-result--empty{display:block;padding:12px 14px;font-size:13px;color:var(--stone)}

/* 滚动进度 */
.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:rgba(217,213,204,.22);pointer-events:none}
.scroll-progress__bar{display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:0 50%;background:var(--signal)}

/* 侧边轨道 */
.rail{
  position:fixed;left:0;top:0;bottom:0;z-index:120;
  width:var(--rail-w);display:flex;flex-direction:column;
  padding:18px 0 14px;
  background:var(--indigo-900);color:var(--mineral);
  border-right:1px solid rgba(217,213,204,.16);
  transition:width 220ms var(--ease),transform 220ms var(--ease);
}
.rail__head{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:0 16px 14px;margin-bottom:12px;
  border-bottom:1px solid rgba(217,213,204,.16);
}
.rail__title{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:rgba(246,241,231,.55)}
.rail__toggle{
  display:grid;place-items:center;width:28px;height:28px;flex:0 0 auto;
  border:1px solid rgba(217,213,204,.28);color:var(--mineral);
  transition:border-color var(--dur) ease,background var(--dur) ease;
}
.rail__toggle:hover{border-color:var(--cyan);background:rgba(47,214,198,.12)}
.rail__toggle-icon{display:block;font-family:var(--font-mono);font-size:12px;line-height:1;transition:transform 220ms var(--ease)}
.rail__nav{flex:1 1 auto;overflow-y:auto}
.rail__list{display:flex;flex-direction:column}
.rail__item{border-bottom:1px solid rgba(217,213,204,.08)}
.rail__link{
  position:relative;display:flex;align-items:center;gap:14px;padding:13px 16px;
  transition:background var(--dur) ease,color var(--dur) ease;
}
.rail__link::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:transparent;
  transition:background var(--dur) ease;
}
.rail__link:hover{background:rgba(47,214,198,.1)}
.rail__link:hover::after{background:var(--cyan)}
.rail__link[aria-current="page"]{background:rgba(255,122,47,.14)}
.rail__link[aria-current="page"]::after{background:var(--signal)}
.rail__link[aria-current="page"] .rail__label{color:#fff}
.rail__idx{flex:0 0 auto;width:20px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:rgba(246,241,231,.45)}
.rail__link[aria-current="page"] .rail__idx{color:var(--signal)}
.rail__label{font-size:14px;font-weight:700;letter-spacing:.04em}
.rail__foot{margin-top:12px;padding:12px 16px 0;border-top:1px solid rgba(217,213,204,.16)}
.rail__note{font-family:var(--font-mono);font-size:11px;line-height:1.6;letter-spacing:.08em;color:rgba(246,241,231,.45);max-width:none}

html[data-rail="collapsed"] .rail__title,
html[data-rail="collapsed"] .rail__label,
html[data-rail="collapsed"] .rail__note{display:none}
html[data-rail="collapsed"] .rail__head{justify-content:center;padding-left:0;padding-right:0}
html[data-rail="collapsed"] .rail__link{justify-content:center;padding:14px 0}
html[data-rail="collapsed"] .rail__idx{width:auto;font-size:12px;color:rgba(246,241,231,.8)}
html[data-rail="collapsed"] .rail__link[aria-current="page"] .rail__idx{color:var(--signal)}
html[data-rail="collapsed"] .rail__foot{padding-left:0;text-align:center}
html[data-rail="collapsed"] .rail__toggle-icon{transform:rotate(180deg)}

/* 抽屉遮罩 */
.scrim{
  position:fixed;inset:0;z-index:100;
  background:rgba(11,27,51,.62);
  opacity:0;pointer-events:none;
  transition:opacity 200ms ease;
}
.scrim[data-open]{opacity:1;pointer-events:auto}

/* 桌面端偏移 */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  .nav-toggle{display:none}
  .scrim{display:none}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .masthead__slogan{display:none}
  .rail{
    width:min(84vw,320px);padding-top:16px;
    transform:translateX(-100%);box-shadow:none;
  }
  .rail[data-open]{transform:translateX(0);box-shadow:0 0 60px -12px rgba(11,27,51,.75)}
  .rail__toggle{display:none}
}
@media (max-width:640px){
  .jumpbar__hint{display:none}
  .jumpbar__input{height:34px;font-size:13px}
  .masthead__inner{min-height:56px;gap:12px}
  .brand__sub{display:none}
}

/* =========================================================
   13 FOOTER
   ========================================================= */
.site-footer{
  margin-top:96px;
  background:var(--indigo-900);color:rgba(246,241,231,.82);
  border-top:1px solid rgba(217,213,204,.16);
}
.footer__inner{max-width:var(--maxw);margin:0 auto;padding:56px var(--pad) 28px}
.footer__brand{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  padding-bottom:24px;margin-bottom:32px;
  border-bottom:1px solid rgba(217,213,204,.16);
}
.footer__brand-mark{border-color:rgba(47,214,198,.6);background:rgba(47,214,198,.08)}
.footer__brand-name{font-family:var(--font-head);font-size:20px;font-weight:900;letter-spacing:.02em;color:var(--mineral)}
.footer__tagline{margin-left:auto;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:rgba(246,241,231,.6)}

.footer__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px}
.footer-col__title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.2em;
  color:var(--cyan);
}
.footer-list{display:flex;flex-direction:column;gap:9px}
.footer-link{
  display:inline-block;padding-bottom:2px;
  font-size:14px;color:rgba(246,241,231,.82);
  border-bottom:1px solid transparent;
  transition:color var(--dur) ease,border-color var(--dur) ease;
}
.footer-link:hover{color:#fff;border-bottom-color:var(--cyan)}

.footer__contact{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 32px;
  margin-top:40px;padding-top:28px;
  border-top:1px solid rgba(217,213,204,.16);
}
.footer-contact__item{display:flex;align-items:baseline;gap:12px;font-size:13.5px;max-width:none}
.footer-contact__key{flex:0 0 64px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:rgba(246,241,231,.5)}
.footer-contact__value{color:rgba(246,241,231,.92);min-width:0;word-break:break-word}
.footer-contact__note{grid-column:1 / -1;font-size:12.5px;line-height:1.7;color:rgba(246,241,231,.6);max-width:none}

.footer__legal{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;
  margin-top:32px;padding-top:18px;
  border-top:1px solid rgba(217,213,204,.16);
}
.footer__rev{display:flex;flex-wrap:wrap;gap:8px}
.footer__rev-item{
  padding:3px 9px;
  border:1px solid rgba(47,214,198,.35);background:rgba(47,214,198,.14);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--cyan);
}
.footer__note{margin-left:auto;font-size:12px;color:rgba(246,241,231,.55);max-width:none}

@media (max-width:900px){
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .footer__contact{grid-template-columns:1fr}
  .footer__tagline{margin-left:0;flex-basis:100%}
  .footer__note{margin-left:0}
}
@media (max-width:560px){
  .footer__grid{grid-template-columns:1fr}
  .footer__inner{padding-top:40px}
}

/* =========================================================
   14 响应式收纳
   ========================================================= */
@media (max-width:1023px){
  h1{font-size:32px}
  h2,.section__title{font-size:24px}
  .span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9{grid-column:span 12}
  .grid--wide{gap:24px}
  .section{padding:56px 0}
  .stat__value{font-size:40px}
}
@media (max-width:640px){
  :root{--pad:18px}
  h1{font-size:27px}
  h2,.section__title{font-size:21px}
  .section__head{gap:16px}
  .footer__inner{padding-bottom:24px}
}

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