/* =========================================================
   UED赛场 · 共享样式 /assets/site.css
   侧轨导航 + 档案卡 + 比分牌 + 夜墨绿/荧光青/比分橙红体系
   ========================================================= */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#04140F;
  --ink-2:#0A2A20;
  --archive:#123A2C;
  --archive-hi:#14402F;
  --cyan:#3BE8C4;
  --cyan-soft:#7CF5DC;
  --score:#FF5A2B;
  --score-soft:#FF7C55;
  --amber:#FFB020;
  --ivory:#F2FFF9;
  --mist:#9DC6B8;
  --line:#1F6E5A;
  --oil:#1A0B04;

  --rail-w:88px;
  --rail-open:240px;
  --rail-pad:16px;
  --rail-icon:44px;

  --gutter:18px;
  --maxw:1200px;

  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --grad-key:linear-gradient(155deg,rgba(18,58,44,.88) 0%,rgba(4,20,15,.94) 72%);
  --t-fast:140ms cubic-bezier(.2,.7,.3,1);
  --t-mid:200ms cubic-bezier(.2,.7,.3,1);
}
@media (min-width:901px){ :root{ --gutter:26px; } }

/* ---------- 2. reset 与基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:16px}
html.has-nav-open,html.has-nav-open body{overflow:hidden}
body{
  margin:0;min-height:100vh;
  background-color:var(--ink);color:var(--ivory);
  font-family:var(--font-sans);font-size:17px;line-height:1.75;font-weight:400;
  background-image:
    radial-gradient(120% 70% at 4% -12%,rgba(59,232,196,.12),transparent 58%),
    radial-gradient(80% 55% at 104% 4%,rgba(255,90,43,.10),transparent 55%);
  background-repeat:no-repeat;background-attachment:fixed;
}
img,svg,video{display:block;max-width:100%;height:auto}
a{color:var(--cyan-soft);text-decoration:none;transition:color var(--t-fast)}
a:hover{color:var(--cyan)}
p{margin:0 0 1.2em;max-width:68ch}
h1,h2,h3,h4{margin:0 0 .5em;font-weight:800;line-height:1.15;letter-spacing:-.01em}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--cyan-soft);outline-offset:3px}
::selection{background:var(--score);color:var(--oil)}

/* ---------- 3. 布局容器 ---------- */
#main-content{display:block}
@media (min-width:901px){ #main-content{padding-left:var(--rail-w)} }
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{position:relative;padding-block:clamp(44px,6vw,88px)}
.section--tight{padding-block:clamp(26px,4vw,52px)}
.grid{display:grid;gap:clamp(14px,2.2vw,26px)}
.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))}
.grid--asym{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr)}
.grid--asym-rev{grid-template-columns:minmax(0,1fr) minmax(0,1.5fr)}
.stack{display:grid;gap:12px}
.row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
@media (max-width:1024px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:760px){
  .grid--2,.grid--3,.grid--4,.grid--asym,.grid--asym-rev{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 4. 文字层级 ---------- */
.display{font-size:clamp(40px,7vw,96px);line-height:.95;letter-spacing:-.02em;font-weight:900;margin:0}
.display--md{font-size:clamp(30px,4.6vw,58px);line-height:1.02}
.display--sm{font-size:clamp(23px,3vw,38px);line-height:1.1}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:600;letter-spacing:.01em}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--cyan);border:1px solid var(--line);background:rgba(18,58,44,.55);
  padding:5px 11px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;background:var(--cyan);box-shadow:0 0 0 3px rgba(59,232,196,.18)}
.lede{font-size:clamp(16px,1.5vw,19px);line-height:1.75;color:var(--mist);max-width:62ch}
.muted{color:var(--mist)}
.accent{color:var(--cyan)}
.accent-score{color:var(--score)}
.label{font-size:12px;font-weight:700;letter-spacing:.08em}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 20px;border:1px solid var(--cyan);
  background:rgba(59,232,196,.08);color:var(--ivory);
  font-size:14px;font-weight:700;letter-spacing:.03em;line-height:1.2;
  transition:background var(--t-fast),color var(--t-fast),border-color var(--t-fast),transform var(--t-fast);
}
.btn:hover{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.btn:active{transform:translateY(1px)}
.btn--score{background:var(--score);border-color:var(--score);color:var(--oil)}
.btn--score:hover{background:var(--score-soft);border-color:var(--score-soft);color:var(--oil)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--mist)}
.btn--ghost:hover{background:rgba(59,232,196,.08);border-color:var(--cyan);color:var(--cyan)}
.btn--block{display:flex;width:100%;justify-content:space-between}

/* ---------- 6. 框景与刻度 ---------- */
.frame{
  position:relative;padding:clamp(18px,3.4vw,40px);
  border:1px solid var(--line);
  background:var(--grad-key);
}
.frame::before,.frame::after{content:"";position:absolute;width:22px;height:22px;pointer-events:none}
.frame::before{top:-1px;left:-1px;border-top:2px solid var(--cyan);border-left:2px solid var(--cyan)}
.frame::after{bottom:-1px;right:-1px;border-bottom:2px solid var(--score);border-right:2px solid var(--score)}
.frame__scale{
  position:absolute;top:-1px;left:22px;right:22px;height:7px;
  background-image:repeating-linear-gradient(to right,var(--line) 0 1px,transparent 1px 14px);
  opacity:.85;pointer-events:none;
}
.scale-rule{height:7px;background-image:repeating-linear-gradient(to right,var(--line) 0 1px,transparent 1px 12px)}

/* ---------- 7. 档案卡与比分牌 ---------- */
.card{
  position:relative;padding:clamp(16px,2vw,24px);
  background:var(--archive);border:1px solid var(--line);
  transition:transform var(--t-fast),border-color var(--t-fast),background var(--t-fast);
}
.card::after{
  content:"";position:absolute;top:-1px;right:-1px;border-style:solid;
  border-width:0 16px 16px 0;border-color:transparent var(--ink) transparent transparent;
  transition:border-right-color var(--t-fast);
}
.card:hover{transform:translateY(-2px);border-color:var(--cyan);background:var(--archive-hi)}
.card:hover::after{border-right-color:var(--cyan)}
.card--flat{background:var(--ink-2)}
.card__head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:10px}
.card__title{font-size:18px;font-weight:800;margin:0}
.card__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--mist)}

.scoreboard{
  display:inline-flex;align-items:baseline;gap:10px;
  padding:8px 14px;border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(4,20,15,.92),rgba(18,58,44,.78));
}
.scoreboard__num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-weight:700;font-size:clamp(26px,3.4vw,40px);line-height:1;color:var(--score);letter-spacing:-.02em;
}
.scoreboard__sep{font-family:var(--font-mono);color:var(--line)}
.scoreboard__team{font-size:13px;letter-spacing:.04em;color:var(--mist)}

/* ---------- 8. 标签与切换 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border:1px solid var(--line);background:rgba(10,42,32,.72);
  color:var(--mist);font-size:12px;font-weight:600;letter-spacing:.08em;white-space:nowrap;
  transition:background var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
a.tag:hover,.tag:hover{border-color:var(--cyan);color:var(--cyan)}
.tag--on{background:var(--score);border-color:var(--score);color:var(--oil)}
.tag--new{background:var(--amber);border-color:var(--amber);color:#241503}
.tag--cyan{border-color:var(--cyan);color:var(--cyan)}
.tag-strip{display:flex;gap:8px;overflow-x:auto;padding-bottom:8px;-webkit-overflow-scrolling:touch;scrollbar-width:thin}
.tag-strip::-webkit-scrollbar{height:4px}
.tag-strip::-webkit-scrollbar-thumb{background:var(--line)}

.seg__list{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
.seg__btn{
  padding:8px 14px;border:1px solid var(--line);background:var(--ink-2);color:var(--mist);
  font-size:13px;font-weight:700;letter-spacing:.06em;white-space:nowrap;
  transition:background var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
.seg__btn:hover{border-color:var(--cyan);color:var(--cyan)}
.seg__btn[aria-selected="true"]{background:var(--score);border-color:var(--score);color:var(--oil)}
.seg__panel{padding-top:18px}
.seg__panel[hidden]{display:none}

/* ---------- 9. 手风琴 / 面包屑 / 图像位 ---------- */
.faq{display:grid;gap:10px}
.faq details{border:1px solid var(--line);background:var(--ink-2);transition:border-color var(--t-fast),background var(--t-fast)}
.faq details[open]{border-color:var(--cyan);background:var(--archive)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;cursor:pointer;font-size:16px;font-weight:700;list-style:none;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--font-mono);font-size:18px;line-height:1;color:var(--cyan)}
.faq details[open] summary::after{content:"—";color:var(--score)}
.faq__body{padding:0 18px 18px;color:var(--mist)}

.crumbs{display:flex;flex-wrap:wrap;gap:8px;padding-block:14px;font-size:12.5px;letter-spacing:.06em;color:var(--mist)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--line)}
.crumbs a{color:var(--mist)}
.crumbs a:hover{color:var(--cyan)}
.crumbs [aria-current="page"]{color:var(--ivory)}

.media{
  position:relative;display:block;width:100%;overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(150deg,#0A2A20,#123A2C 50%,#0E3B2E);
}
.media::before{
  content:"";position:absolute;inset:0;opacity:.7;
  background-image:
    linear-gradient(90deg,rgba(59,232,196,.10) 1px,transparent 1px),
    linear-gradient(0deg,rgba(59,232,196,.10) 1px,transparent 1px);
  background-size:34px 34px;
}
.media::after{content:"";position:absolute;left:0;right:0;bottom:0;height:42%;background:linear-gradient(180deg,transparent,rgba(4,20,15,.85))}
.media img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.media__cap{
  position:absolute;z-index:2;left:12px;bottom:10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--cyan-soft);
}
.media--21x9{aspect-ratio:21/9}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--3x4{aspect-ratio:3/4}
@media (max-width:600px){ .media--21x9{aspect-ratio:16/9} }

/* ---------- 10. 显现 ---------- */
[data-reveal]{opacity:0;transform:translateY(8px);transition:opacity 420ms ease-out,transform 420ms ease-out}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 11. 跳转链接 ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:10px 16px;border:1px solid var(--cyan);background:var(--cyan);color:var(--ink);
  font-size:14px;font-weight:700;
  transform:translateY(-200%);transition:transform var(--t-fast);
}
.skip-link:focus{transform:none;color:var(--ink)}

/* ---------- 12. 侧轨头部 ---------- */
.pulse-line{position:fixed;left:0;top:0;bottom:0;width:3px;z-index:96;pointer-events:none;background:rgba(31,110,90,.35)}
.pulse-line__bar{
  position:absolute;inset:0;transform:scaleY(var(--progress,0));transform-origin:top center;
  background:linear-gradient(180deg,var(--cyan),var(--score));
}

.site-rail{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);z-index:80;
  border-right:1px solid var(--line);
  background:linear-gradient(180deg,#061A13 0%,#0A2A20 45%,#04140F 100%);
  transition:width var(--t-mid),box-shadow var(--t-mid);
}
.site-rail::after{
  content:"";position:absolute;top:0;bottom:0;right:-1px;width:5px;opacity:.55;pointer-events:none;
  background-image:repeating-linear-gradient(to bottom,var(--line) 0 1px,transparent 1px 18px);
}
.site-rail:hover,.site-rail:focus-within,.site-rail[data-open="true"]{
  width:var(--rail-open);box-shadow:30px 0 70px -40px rgba(0,0,0,.95);
}
.rail-panel{
  display:flex;flex-direction:column;height:100%;
  padding:18px 0;overflow-y:auto;overflow-x:hidden;
}

/* 品牌 */
.rail-head{display:flex;flex-direction:column;gap:12px;padding:0 var(--rail-pad) 16px;border-bottom:1px solid var(--line)}
.rail-brand{display:flex;align-items:center;gap:12px;color:inherit}
.rail-brand__mark{
  flex:0 0 var(--rail-icon);width:var(--rail-icon);height:var(--rail-icon);
  display:grid;place-items:center;
  border:1px solid var(--cyan);background:linear-gradient(150deg,rgba(59,232,196,.22),rgba(4,20,15,.4));
  color:var(--cyan);font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.06em;
}
.rail-brand__text{
  display:flex;flex-direction:column;white-space:nowrap;
  max-width:0;opacity:0;overflow:hidden;
  transition:max-width var(--t-mid),opacity 160ms ease;
}
.rail-brand__name{font-size:16px;font-weight:800;letter-spacing:.02em;color:var(--ivory)}
.rail-brand__tag{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;color:var(--mist)}
.site-rail:hover .rail-brand__text,.site-rail:focus-within .rail-brand__text{max-width:180px;opacity:1}

.rail-badge{
  align-self:flex-start;margin-left:16px;padding:6px 4px;white-space:nowrap;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;color:var(--amber);
  border:1px solid rgba(255,176,32,.45);background:rgba(255,176,32,.10);
  writing-mode:vertical-rl;text-orientation:upright;
}
.site-rail:hover .rail-badge,.site-rail:focus-within .rail-badge{
  writing-mode:horizontal-tb;text-orientation:mixed;margin-left:0;padding:4px 9px;
}

/* 主导航 */
.rail-nav{padding:14px var(--rail-pad) 0}
.rail-nav__list{display:grid;gap:4px}
.rail-link{position:relative;display:flex;align-items:center;gap:12px;padding:9px 0;color:var(--mist)}
.rail-link::before{
  content:"";position:absolute;left:calc(-1 * var(--rail-pad));top:6px;bottom:6px;width:3px;
  background:transparent;transition:background var(--t-fast);
}
.rail-link__icon{
  flex:0 0 var(--rail-icon);width:var(--rail-icon);height:32px;
  display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(18,58,44,.5);color:var(--mist);
  font-family:var(--font-mono);font-size:11.5px;font-weight:700;letter-spacing:.08em;
  transition:background var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
.rail-link__label{
  max-width:0;overflow:hidden;opacity:0;white-space:nowrap;
  font-size:14px;font-weight:700;letter-spacing:.04em;
  transition:max-width var(--t-mid),opacity 160ms ease;
}
.site-rail:hover .rail-link__label,.site-rail:focus-within .rail-link__label{max-width:150px;opacity:1}
.rail-link:hover{color:var(--ivory)}
.rail-link:hover .rail-link__icon{border-color:var(--cyan);background:var(--cyan);color:var(--ink)}
.rail-link:hover::before{background:var(--score)}
.rail-link[aria-current="page"]{color:var(--ivory)}
.rail-link[aria-current="page"]::before{background:var(--score)}
.rail-link[aria-current="page"] .rail-link__icon{border-color:var(--cyan);background:rgba(59,232,196,.16);color:var(--cyan-soft)}

/* 轨道底部 */
.rail-foot{
  margin-top:auto;padding:16px var(--rail-pad) 0;border-top:1px solid var(--line);
  display:grid;gap:8px;
}
.rail-utils{display:grid;gap:2px}
.rail-util{display:flex;align-items:center;gap:12px;padding:7px 0;color:var(--mist);font-size:13px}
.rail-util__mark{
  flex:0 0 var(--rail-icon);width:var(--rail-icon);height:26px;
  display:grid;place-items:center;
  border:1px dashed var(--line);color:var(--line);font-size:12px;
  transition:border-color var(--t-fast),color var(--t-fast);
}
.rail-util__label{
  max-width:0;overflow:hidden;opacity:0;white-space:nowrap;
  transition:max-width var(--t-mid),opacity 160ms ease;
}
.site-rail:hover .rail-util__label,.site-rail:focus-within .rail-util__label{max-width:150px;opacity:1}
.rail-util:hover{color:var(--ivory)}
.rail-util:hover .rail-util__mark{border-style:solid;border-color:var(--cyan);color:var(--cyan)}

.rail-cta{
  display:flex;align-items:center;justify-content:center;gap:10px;margin-top:8px;padding:10px;
  border:1px solid var(--score);background:var(--score);color:var(--oil);
  font-size:13.5px;font-weight:800;letter-spacing:.05em;
  transition:background var(--t-fast),color var(--t-fast),padding var(--t-mid);
}
.rail-cta__icon{font-family:var(--font-mono);font-size:16px;line-height:1}
.rail-cta__text{
  max-width:0;overflow:hidden;opacity:0;white-space:nowrap;
  transition:max-width var(--t-mid),opacity 160ms ease;
}
.site-rail:hover .rail-cta,.site-rail:focus-within .rail-cta{justify-content:space-between;padding:10px 12px}
.site-rail:hover .rail-cta__text,.site-rail:focus-within .rail-cta__text{max-width:150px;opacity:1}
.rail-cta:hover{background:var(--score-soft);color:var(--oil)}

/* 移动端抽屉按钮 */
.rail-toggle{
  display:none;align-items:center;gap:10px;padding:12px 16px;
  border:1px solid var(--cyan);color:var(--ivory);
  background:linear-gradient(150deg,rgba(4,20,15,.96),rgba(18,58,44,.96));
  font-size:13px;font-weight:800;letter-spacing:.08em;
}
.rail-toggle__bars{display:grid;gap:4px}
.rail-toggle__bars i{display:block;width:18px;height:2px;background:var(--cyan);transition:transform var(--t-fast)}
.rail-toggle__words{display:inline-flex;align-items:center;white-space:nowrap}
.rail-toggle__word--open{display:none}
.rail-toggle[aria-expanded="true"] .rail-toggle__bars i:first-child{transform:translateY(3px) rotate(45deg)}
.rail-toggle[aria-expanded="true"] .rail-toggle__bars i:last-child{transform:translateY(-3px) rotate(-45deg)}
.rail-toggle[aria-expanded="true"] .rail-toggle__word{display:none}
.rail-toggle[aria-expanded="true"] .rail-toggle__word--open{display:inline}

/* ---------- 13. 移动端 / 平板 侧轨变抽屉 ---------- */
@media (max-width:900px){
  .site-rail{
    inset:auto;width:auto;border-right:0;background:transparent;
    pointer-events:none;box-shadow:none;
  }
  .site-rail::after{display:none}
  .site-rail:hover,.site-rail:focus-within{width:auto;box-shadow:none}

  .rail-toggle{
    display:flex;position:fixed;right:14px;bottom:14px;z-index:120;pointer-events:auto;
    box-shadow:0 12px 34px -14px rgba(0,0,0,.95);
  }

  .rail-panel{
    position:fixed;inset:0;z-index:100;height:auto;
    padding:26px 20px 96px;overflow-y:auto;
    background:linear-gradient(170deg,#061A13 0%,#0A2A20 45%,#04140F 100%);
    border-right:1px solid var(--line);
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity 180ms ease,visibility 180ms ease;
  }
  .site-rail[data-open="true"] .rail-panel{opacity:1;visibility:visible;pointer-events:auto}

  .rail-head{gap:14px;padding-bottom:18px}
  .rail-brand__text,.rail-link__label,.rail-util__label,.rail-cta__text{max-width:none;opacity:1}
  .rail-brand__name{font-size:18px}
  .rail-brand__tag{font-size:11.5px}
  .rail-badge{writing-mode:horizontal-tb;text-orientation:mixed;margin-left:0;padding:4px 9px}

  .rail-nav{padding-top:18px}
  .rail-link{padding:12px 0}
  .rail-link__icon{height:38px}
  .rail-link__label{font-size:16px}
  .rail-link::before{left:-20px}

  .rail-foot{padding-top:20px;gap:10px}
  .rail-util{padding:9px 0;font-size:14px}
  .rail-util__mark{height:30px}
  .rail-cta{justify-content:space-between;padding:14px 16px;font-size:15px}

  .pulse-line{left:0;right:0;top:0;bottom:auto;width:auto;height:3px}
  .pulse-line__bar{transform:scaleX(var(--progress,0));transform-origin:left center;background:linear-gradient(90deg,var(--cyan),var(--score))}
}

/* ---------- 14. 页脚 ---------- */
.site-foot{
  position:relative;overflow:hidden;
  margin-top:clamp(40px,6vw,90px);
  padding:clamp(40px,6vw,72px) 0 26px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,#0A2A20 0%,#04140F 72%);
}
@media (min-width:901px){ .site-foot{margin-left:var(--rail-w)} }

.foot-rule{position:absolute;top:0;left:0;right:0;height:8px;pointer-events:none;
  background-image:repeating-linear-gradient(to right,var(--line) 0 1px,transparent 1px 28px);opacity:.65}
.foot-rule::after{content:"";position:absolute;left:0;top:0;height:100%;width:22%;background:var(--score);opacity:.85}

.foot-watermark{
  position:absolute;right:-1%;bottom:-2%;margin:0;pointer-events:none;user-select:none;white-space:nowrap;
  font-size:clamp(90px,17vw,240px);font-weight:900;line-height:.78;letter-spacing:-.05em;
  color:rgba(59,232,196,.045);
}

.foot-grid{position:relative;display:grid;grid-template-columns:minmax(240px,1fr) minmax(0,1.9fr);gap:clamp(28px,4vw,64px)}

.foot-brand__link{display:inline-flex;align-items:center;gap:12px;color:var(--ivory)}
.foot-brand__mark{
  display:grid;place-items:center;width:46px;height:46px;
  border:1px solid var(--cyan);color:var(--cyan);
  font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.06em;
  background:linear-gradient(150deg,rgba(59,232,196,.2),transparent);
}
.foot-brand__name{font-size:20px;font-weight:900;letter-spacing:.02em}
.foot-brand__tag{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--mist);margin:14px 0 10px}
.foot-brand__text{color:var(--mist);font-size:14.5px;line-height:1.75;max-width:34ch;margin-bottom:20px}

.foot-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.foot-col__title{
  margin:0 0 14px;padding-bottom:8px;border-bottom:1px solid var(--line);
  font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--cyan);
}
.foot-list{display:grid;gap:9px;font-size:14.5px}
.foot-list a{color:var(--mist)}
.foot-list a:hover{color:var(--cyan-soft)}
.foot-list a::before{content:"›";margin-right:8px;font-family:var(--font-mono);color:var(--line)}
.foot-list a:hover::before{color:var(--score)}

.foot-contact{position:relative;margin-top:clamp(28px,4vw,48px);padding-top:24px;border-top:1px dashed var(--line)}
.contact-list{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.contact-list li{display:flex;align-items:baseline;gap:10px;font-size:14.5px}
.contact-list__key{
  flex:0 0 auto;padding:3px 8px;border:1px solid var(--line);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;color:var(--cyan);
}
.contact-list__val{color:var(--ivory)}
a.contact-list__val:hover{color:var(--cyan-soft)}
.foot-note{margin:18px 0 0;max-width:70ch;font-size:13.5px;color:var(--mist)}

.foot-base{
  position:relative;margin-top:clamp(26px,4vw,44px);padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:space-between;
  font-size:12.5px;letter-spacing:.04em;color:var(--mist);
}
.foot-base p{margin:0;max-width:none;font-family:var(--font-mono)}
.foot-base__legal{color:var(--mist)}
.foot-base__meta{color:var(--cyan)}

@media (max-width:900px){
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .foot-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
}
@media (max-width:560px){
  .foot-cols{grid-template-columns:minmax(0,1fr)}
  .foot-watermark{font-size:clamp(72px,26vw,140px)}
}

/* ---------- 15. 无障碍与减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  html{scroll-behavior:auto}
  [data-reveal]{opacity:1;transform:none}
  .card:hover{transform:none}
}