/* ============================================================
   竞博网页 · Site Kit 共享样式 /assets/site.css
   深空蓝画布 + 竞博橙 / 电光青光晕 + 等宽标签体系
   ============================================================ */

/* ---------- 1. tokens ---------- */
:root{
  --void-navy:#0A1020;
  --space-blue:#111B30;
  --slate-mineral:#1B2436;
  --hairline-blue:#2C3950;
  --bone-white:#F3EFE4;
  --ash-gray:#8D97AA;
  --jbo-terracotta:#E2703A;
  --electric-cyan:#33DCC6;
  --moss-green:#6E8B6A;
  --signal-magenta:#FF3D8B;
  --amber-tick:#FFC24B;

  --bg:var(--void-navy);
  --bg-raised:var(--space-blue);
  --bg-panel:var(--slate-mineral);
  --line:var(--hairline-blue);
  --ink:var(--bone-white);
  --ink-dim:var(--ash-gray);

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

  --t-12:12px; --t-14:14px; --t-18:18px; --t-24:24px;
  --t-34:34px; --t-48:48px; --t-68:68px;
  --h-display:clamp(30px,4.6vw,68px);

  --gutter:clamp(16px,4vw,40px);
  --maxw:1280px;
  --radius:2px;
  --shadow-soft:0 8px 24px rgba(4,8,18,.55);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
img,svg,video{max-width:100%;display:block;}
button{font:inherit;color:inherit;}
a{color:inherit;}
[hidden]{display:none !important;}

body{
  min-height:100%;
  background-color:var(--void-navy);
  background-image:
    radial-gradient(58rem 42rem at 84% -8%, rgba(226,112,58,.22), transparent 62%),
    radial-gradient(50rem 38rem at 4% 10%, rgba(51,220,198,.15), transparent 66%),
    radial-gradient(32rem 28rem at 70% 96%, rgba(255,61,139,.10), transparent 72%);
  background-attachment:fixed;
  color:var(--ink);
  font-family:var(--f-sans);
  font-size:var(--t-18);
  font-weight:400;
  line-height:1.78;
  letter-spacing:.004em;
  overflow-x:hidden;
}

/* 背景网格：控制面板底纹 */
body::before{
  content:"";
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(44,57,80,.30) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(44,57,80,.20) 1px, transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:radial-gradient(120% 88% at 50% 0%, #000 0%, transparent 78%);
  mask-image:radial-gradient(120% 88% at 50% 0%, #000 0%, transparent 78%);
  opacity:.55;
}

main,#main-content{position:relative; z-index:1; scroll-margin-top:96px;}

::selection{background:rgba(51,220,198,.30); color:var(--bone-white);}

/* ---------- 3. 排版与通用工具 ---------- */
h1,h2,h3,h4{
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.08;
  color:var(--ink);
}
h1{font-size:var(--h-display);}
h2{font-size:clamp(24px,3.2vw,40px);}
h3{font-size:var(--t-24);}
h4{font-size:var(--t-18);}
p{max-width:68ch;}
strong{font-weight:900;}

.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums;letter-spacing:.06em;}

.eyebrow{
  display:inline-block;
  font-family:var(--f-mono);
  font-size:var(--t-12);
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--electric-cyan);
}
.section-title{font-size:clamp(24px,3.2vw,40px);font-weight:900;letter-spacing:-.02em;line-height:1.1;}
.lede{font-size:var(--t-18);color:var(--ash-gray);max-width:68ch;line-height:1.78;}
.divider{height:1px;border:0;background:var(--line);margin:0;}

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

.skip-link{
  position:fixed;top:8px;left:8px;z-index:200;
  transform:translateY(-220%);
  background:var(--bone-white);color:var(--void-navy);
  padding:10px 18px;font-size:var(--t-14);font-weight:900;
  text-decoration:none;border-radius:var(--radius);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0);}

:focus-visible{
  outline:2px solid var(--electric-cyan);
  outline-offset:3px;
  border-radius:1px;
}

/* ---------- 4. 布局 ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);width:100%;}

.section{position:relative;padding:clamp(44px,7vw,96px) 0;}
.section--raised{background:var(--bg-raised);}
.section--deep{background:var(--void-navy);}
.section__head{max-width:68ch;margin-bottom:clamp(20px,3vw,36px);}
.section__head .lede{margin-top:14px;}

.grid{display:grid;gap:clamp(16px,2vw,28px);}
.grid--12{grid-template-columns:repeat(12,1fr);}
.col-3{grid-column:span 3;}
.col-4{grid-column:span 4;}
.col-5{grid-column:span 5;}
.col-6{grid-column:span 6;}
.col-8{grid-column:span 8;}
.col-9{grid-column:span 9;}
.col-12{grid-column:span 12;}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;
  font-size:var(--t-14);font-weight:900;letter-spacing:.02em;
  text-decoration:none;
  color:var(--ink);
  background:rgba(27,36,54,.66);
  border:1px solid var(--hairline-blue);
  border-radius:var(--radius);
  box-shadow:0 0 0 rgba(51,220,198,0);
  transition:transform .18s var(--ease),border-color .18s,background .18s,color .18s,box-shadow .18s;
}
.btn:hover{
  transform:translateY(-1px);
  border-color:var(--electric-cyan);
  color:var(--bone-white);
  box-shadow:0 6px 22px rgba(51,220,198,.14);
}
.btn--primary{
  color:var(--void-navy);
  background:linear-gradient(120deg,var(--jbo-terracotta),#F2915E);
  border-color:transparent;
  font-weight:900;
}
.btn--primary:hover{color:var(--void-navy);box-shadow:0 8px 26px rgba(226,112,58,.32);}
.btn--ghost{background:transparent;color:var(--ash-gray);border-color:var(--hairline-blue);}
.btn--ghost:hover{color:var(--bone-white);background:rgba(27,36,54,.6);}
.btn.is-copied{border-color:var(--electric-cyan);color:var(--electric-cyan);}

/* ---------- 6. 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--f-mono);font-size:var(--t-12);
  letter-spacing:.08em;color:var(--ash-gray);
}
.crumbs__item{display:inline-flex;align-items:center;gap:8px;}
.crumbs__item + .crumbs__item::before{content:"/";color:var(--hairline-blue);}
.crumbs a{color:var(--ash-gray);text-decoration:none;transition:color .18s;}
.crumbs a:hover{color:var(--electric-cyan);}
.crumbs [aria-current="page"]{color:var(--bone-white);}

/* ---------- 7. 面板 / 标签 / 数据卡 ---------- */
.panel{
  position:relative;
  padding:clamp(18px,2.4vw,26px);
  background:linear-gradient(160deg,rgba(27,36,54,.94),rgba(17,27,48,.74));
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-soft);
}
.panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,var(--electric-cyan),rgba(51,220,198,0) 62%);
  opacity:.65;
}
.panel--data{
  padding:16px 18px;
  background:rgba(10,16,32,.74);
  border-color:rgba(44,57,80,.9);
}
.panel--data::before{background:linear-gradient(90deg,var(--jbo-terracotta),transparent 70%);}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  padding:4px 10px;border-radius:999px;
  color:var(--ash-gray);
  background:rgba(10,16,32,.66);
  border:1px solid var(--hairline-blue);
  white-space:nowrap;
}
.tag--cyan{color:var(--electric-cyan);border-color:rgba(51,220,198,.45);background:rgba(51,220,198,.10);}
.tag--orange{color:var(--jbo-terracotta);border-color:rgba(226,112,58,.5);background:rgba(226,112,58,.12);}
.tag--magenta{color:var(--signal-magenta);border-color:rgba(255,61,139,.45);background:rgba(255,61,139,.10);}
.tag--amber{color:var(--amber-tick);border-color:rgba(255,194,75,.45);background:rgba(255,194,75,.10);}
.tag--moss{color:var(--moss-green);border-color:rgba(110,139,106,.55);background:rgba(110,139,106,.14);}

.stat{display:flex;flex-direction:column;gap:4px;}
.stat__value{font-family:var(--f-mono);font-size:var(--t-24);font-weight:700;color:var(--bone-white);letter-spacing:-.01em;}
.stat__label{font-family:var(--f-mono);font-size:var(--t-12);letter-spacing:.12em;text-transform:uppercase;color:var(--ash-gray);}

/* ---------- 8. 标签组 ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:clamp(18px,2.4vw,26px);}
.tab{
  appearance:none;cursor:pointer;
  padding:9px 18px;border-radius:999px;
  font-size:var(--t-14);font-weight:700;
  color:var(--ash-gray);
  background:rgba(27,36,54,.6);
  border:1px solid var(--hairline-blue);
  transition:color .18s,background .18s,border-color .18s,transform .18s var(--ease);
}
.tab:hover{color:var(--bone-white);border-color:var(--electric-cyan);transform:translateY(-1px);}
.tab[aria-selected="true"]{
  color:var(--void-navy);
  background:linear-gradient(120deg,var(--electric-cyan),#8FF0E3);
  border-color:transparent;
  font-weight:900;
}
.tabpanel[hidden]{display:none;}

/* ---------- 9. 时间轴 ---------- */
.timeline{position:relative;padding-left:26px;}
.timeline::before{
  content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(51,220,198,.6),var(--line) 30%,var(--line) 80%,transparent);
}
.timeline__item{position:relative;padding-bottom:clamp(22px,2.6vw,32px);}
.timeline__item:last-child{padding-bottom:0;}
.timeline__item::before{
  content:"";position:absolute;left:-25px;top:9px;
  width:7px;height:7px;border-radius:50%;
  background:var(--electric-cyan);
  box-shadow:0 0 12px rgba(51,220,198,.7);
}
.timeline__item[data-state="pending"]::before{background:var(--amber-tick);box-shadow:0 0 12px rgba(255,194,75,.6);}
.timeline__item[data-state="current"]::before{background:var(--signal-magenta);box-shadow:0 0 14px rgba(255,61,139,.7);}
.timeline__stamp{font-family:var(--f-mono);font-size:var(--t-12);letter-spacing:.1em;color:var(--ash-gray);text-transform:uppercase;}
.timeline__title{font-size:var(--t-18);font-weight:700;margin:4px 0 6px;color:var(--bone-white);}
.timeline__meta{font-size:var(--t-14);color:var(--ash-gray);max-width:60ch;}

/* ---------- 10. 图片容器 ---------- */
.media{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(140deg,var(--slate-mineral),var(--space-blue));
  box-shadow:var(--shadow-soft);
}
.media--16x9{aspect-ratio:16/9;}
.media--4x3{aspect-ratio:4/3;}
.media--1x1{aspect-ratio:1/1;}
.media--tall{aspect-ratio:3/4;}
.media__img{width:100%;height:100%;object-fit:cover;display:block;}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(44,57,80,.35) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(44,57,80,.22) 1px,transparent 1px),
    radial-gradient(28rem 18rem at 88% -10%,rgba(226,112,58,.22),transparent 62%),
    radial-gradient(22rem 16rem at 0% 110%,rgba(51,220,198,.18),transparent 66%);
  background-size:48px 48px,48px 48px,auto,auto;
  mix-blend-mode:screen;
  opacity:.7;
}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:12px 14px;
  font-family:var(--f-mono);font-size:var(--t-12);letter-spacing:.08em;
  color:var(--bone-white);
  background:linear-gradient(0deg,rgba(10,16,32,.92),rgba(10,16,32,0));
}

/* ---------- 11. 页头：框架式导轨 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,rgba(10,16,32,.97),rgba(10,16,32,.88) 72%,rgba(17,27,48,.94));
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(51,220,198,.5) 22%,rgba(226,112,58,.5) 62%,transparent);
  pointer-events:none;
}

.progress-rail{
  position:absolute;left:0;right:0;top:0;height:2px;
  background:rgba(44,57,80,.55);overflow:hidden;
}
.progress-rail__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--electric-cyan),var(--jbo-terracotta));
  transition:transform .12s linear;
}

.site-header__inner{
  display:flex;align-items:center;flex-wrap:nowrap;
  gap:clamp(12px,2vw,28px);
  max-width:var(--maxw);margin:0 auto;
  padding:10px var(--gutter);
  min-height:68px;
}

/* 品牌坞 */
.brand{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:10px;
  text-decoration:none;color:var(--ink);
}
.brand__mark{
  position:relative;
  font-family:var(--f-mono);font-size:var(--t-12);font-weight:700;
  letter-spacing:.14em;padding:7px 9px;
  color:var(--electric-cyan);
  background:linear-gradient(140deg,rgba(51,220,198,.16),rgba(226,112,58,.14));
  border:1px solid var(--hairline-blue);
}
.brand__mark::before,.brand__mark::after{
  content:"";position:absolute;width:6px;height:6px;
  border:1px solid var(--jbo-terracotta);
}
.brand__mark::before{left:-2px;top:-2px;border-right:0;border-bottom:0;}
.brand__mark::after{right:-2px;bottom:-2px;border-left:0;border-top:0;}
.brand__text{display:flex;flex-direction:column;gap:1px;}
.brand__name{font-size:var(--t-18);font-weight:900;letter-spacing:-.01em;line-height:1.1;color:var(--bone-white);}
.brand__domain{font-size:11px;letter-spacing:.08em;color:var(--ash-gray);}

/* 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:9px 14px;
  background:rgba(27,36,54,.7);
  border:1px solid var(--hairline-blue);
  border-radius:var(--radius);
  color:var(--ash-gray);font-size:var(--t-14);font-weight:700;
  cursor:pointer;transition:color .18s,border-color .18s;
}
.nav-toggle:hover{color:var(--bone-white);border-color:var(--electric-cyan);}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:3px;width:16px;}
.nav-toggle__bars i{display:block;height:1.5px;width:100%;background:currentColor;border-radius:2px;transition:transform .2s var(--ease),opacity .2s;}
.site-header[data-open] .nav-toggle__bars i:nth-child(1){transform:translateY(4.5px) rotate(45deg);}
.site-header[data-open] .nav-toggle__bars i:nth-child(2){opacity:0;}
.site-header[data-open] .nav-toggle__bars i:nth-child(3){transform:translateY(-4.5px) rotate(-45deg);}
.site-header[data-open] .nav-toggle{color:var(--electric-cyan);border-color:var(--electric-cyan);}

/* 导航带 */
.site-nav{flex:1 1 auto;min-width:0;overflow-x:auto;scrollbar-width:none;}
.site-nav::-webkit-scrollbar{display:none;}
.site-nav__list{
  display:flex;align-items:center;justify-content:center;
  width:max-content;margin:0 auto;
  gap:clamp(2px,1vw,10px);
}
.site-nav__item{display:block;}
.site-nav__link{
  position:relative;display:block;
  padding:10px 12px;
  font-size:var(--t-14);font-weight:500;
  color:var(--ash-gray);text-decoration:none;white-space:nowrap;
  border-bottom:2px solid transparent;
  transition:color .2s,border-color .2s,font-weight .2s;
}
.site-nav__link:hover{color:var(--bone-white);}
.site-nav__link[aria-current="page"]{
  color:var(--bone-white);font-weight:900;
  border-bottom-color:var(--jbo-terracotta);
}
.site-nav__link[aria-current="page"]::after{
  content:"";position:absolute;left:50%;bottom:-4px;
  width:5px;height:5px;margin-left:-2.5px;border-radius:50%;
  background:var(--electric-cyan);
  box-shadow:0 0 10px rgba(51,220,198,.85);
}

/* 检索坞 */
.hub-search{position:relative;flex:0 0 auto;margin-left:auto;}
.hub-search__field{
  display:flex;align-items:center;gap:8px;
  padding:8px 12px;
  background:rgba(27,36,54,.72);
  border:1px solid var(--hairline-blue);
  border-radius:var(--radius);
  cursor:text;
  transition:border-color .18s,box-shadow .18s;
}
.hub-search__field:focus-within{
  border-color:var(--electric-cyan);
  box-shadow:0 0 0 1px rgba(51,220,198,.35),0 0 22px rgba(51,220,198,.18);
}
.hub-search__icon{font-size:var(--t-14);color:var(--electric-cyan);line-height:1;}
.hub-search__input{
  width:min(220px,24vw);
  border:0;background:transparent;outline:none;
  color:var(--ink);font-family:var(--f-sans);font-size:var(--t-14);
  transition:width .22s var(--ease),opacity .22s;
}
.hub-search__input::placeholder{color:var(--ash-gray);}
.hub-search__input::-webkit-search-cancel-button{-webkit-appearance:none;}

.hub-search__panel{
  position:absolute;right:0;top:calc(100% + 10px);
  width:min(380px,86vw);
  padding:12px;
  background:rgba(11,18,34,.98);
  border:1px solid var(--hairline-blue);
  border-radius:var(--radius);
  box-shadow:var(--shadow-soft);
  z-index:80;
}
.hub-search__panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,var(--electric-cyan),transparent 70%);
}
.hub-search__hint{
  font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ash-gray);margin-bottom:8px;
}
.hub-search__results{display:flex;flex-direction:column;gap:2px;max-height:52vh;overflow-y:auto;}
.hub-search__result{display:block;}
.hub-search__link{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;text-decoration:none;
  color:var(--bone-white);font-size:var(--t-14);
  border-left:2px solid transparent;
  transition:background .16s,border-color .16s;
}
.hub-search__link:hover{background:rgba(51,220,198,.10);border-left-color:var(--electric-cyan);}
.hub-search__kind{
  flex:0 0 auto;font-size:10px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ash-gray);border:1px solid var(--hairline-blue);
  padding:2px 6px;border-radius:999px;
}
.hub-search__label{min-width:0;}
.hub-search__hit{background:rgba(51,220,198,.24);color:var(--electric-cyan);padding:0 1px;border-radius:1px;}
.hub-search__empty{font-size:var(--t-14);color:var(--ash-gray);padding:6px 10px;}

/* ---------- 12. 页脚 ---------- */
.site-footer{
  position:relative;z-index:2;
  margin-top:clamp(48px,8vw,110px);
  background:var(--void-navy);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(42rem 22rem at 10% 0%,rgba(226,112,58,.16),transparent 62%),
    radial-gradient(34rem 20rem at 92% 8%,rgba(51,220,198,.12),transparent 66%);
}
.site-footer__inner{
  position:relative;
  max-width:var(--maxw);margin:0 auto;
  padding:clamp(40px,6vw,72px) var(--gutter) 28px;
}
.site-footer__grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.5fr;
  gap:clamp(20px,3vw,44px);
}
.footer-col{display:flex;flex-direction:column;gap:14px;min-width:0;}
.footer-col__title{
  font-family:var(--f-mono);font-size:var(--t-12);font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;color:var(--ash-gray);
}
.footer-col--brand{gap:16px;}
.brand--footer{align-self:flex-start;}
.footer-lede{font-size:var(--t-14);color:var(--ash-gray);line-height:1.7;max-width:26ch;}
.footer-mono{font-size:11px;letter-spacing:.1em;color:rgba(141,151,170,.7);}

.footer-links{display:flex;flex-direction:column;gap:9px;}
.footer-links a{
  position:relative;padding-left:14px;
  font-size:var(--t-14);color:var(--bone-white);text-decoration:none;
  transition:color .18s,padding-left .18s var(--ease);
}
.footer-links a::before{
  content:"";position:absolute;left:0;top:50%;
  width:6px;height:1px;background:var(--hairline-blue);
  transition:width .18s var(--ease),background .18s;
}
.footer-links a:hover{color:var(--electric-cyan);padding-left:18px;}
.footer-links a:hover::before{width:12px;background:var(--electric-cyan);}

.footer-contact{display:flex;flex-direction:column;gap:8px;}
.footer-contact li{font-size:var(--t-14);color:var(--ash-gray);line-height:1.7;}
.footer-contact li.mono{color:var(--bone-white);letter-spacing:.04em;}
.footer-note{font-size:var(--t-12);color:rgba(141,151,170,.85);line-height:1.7;max-width:34ch;}

.site-footer__base{
  margin-top:clamp(28px,4vw,48px);
  padding-top:18px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;
}
.footer-legal{font-size:var(--t-12);color:var(--ash-gray);letter-spacing:.08em;}
.footer-legal-links{display:flex;flex-wrap:wrap;gap:8px 20px;margin-left:auto;}
.footer-legal-links a{
  font-size:var(--t-12);color:var(--ash-gray);text-decoration:none;
  transition:color .18s;
}
.footer-legal-links a:hover{color:var(--electric-cyan);}
.footer-copy{font-size:var(--t-12);color:rgba(141,151,170,.7);}

/* ---------- 13. 滚动显现与章节高亮 ---------- */
[data-reveal]{
  transition:opacity .4s var(--ease),transform .4s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
}
.has-js [data-reveal]:not(.is-visible){opacity:0;transform:translateY(12px);}

[data-spy] .section-title,
[data-spy] .spy-title{
  font-weight:500;color:var(--ash-gray);
  transition:color .3s var(--ease),font-weight .2s var(--ease);
}
[data-spy].is-current .section-title,
[data-spy].is-current .spy-title{
  font-weight:900;color:var(--bone-white);
}
[data-spy].is-current .section-title::after{
  content:"";display:block;width:56px;height:2px;margin-top:14px;
  background:linear-gradient(90deg,var(--electric-cyan),transparent);
}

/* ---------- 14. 响应式 ---------- */
@media (max-width:1080px){
  .hub-search__input{width:min(170px,22vw);}
  .site-nav__link{padding:10px 9px;font-size:13px;}
  .site-footer__grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:34px;}
  .footer-col--contact{grid-column:1 / -1;}
}

@media (max-width:900px){
  body{font-size:var(--t-18);}
  .site-header__inner{flex-wrap:wrap;row-gap:10px;min-height:auto;padding-bottom:10px;}
  .nav-toggle{display:inline-flex;order:2;}
  .hub-search{order:1;margin-left:auto;}
  .site-nav{
    order:3;flex:1 0 100%;
    display:none;
    border-top:1px solid var(--line);
    margin-top:10px;padding-top:10px;
  }
  .site-header[data-open] .site-nav{display:block;}
  .site-nav__list{
    justify-content:flex-start;width:auto;margin:0;
    gap:8px;padding-bottom:6px;
    overflow-x:auto;
    scroll-snap-type:x proximity;
    -webkit-overflow-scrolling:touch;
  }
  .site-nav__item{flex:0 0 auto;scroll-snap-align:center;}
  .site-nav__link{
    padding:9px 16px;border:1px solid var(--hairline-blue);
    border-radius:999px;border-bottom-width:1px;
  }
  .site-nav__link[aria-current="page"]{
    border-color:var(--jbo-terracotta);
    background:rgba(226,112,58,.14);
  }
  .site-nav__link[aria-current="page"]::after{display:none;}
  .grid--12{grid-template-columns:repeat(6,1fr);}
  .col-3,.col-4,.col-5{grid-column:span 3;}
  .col-6,.col-8,.col-9,.col-12{grid-column:span 6;}
  .site-footer__grid{grid-template-columns:1fr 1fr;}
  .footer-col--brand{grid-column:1 / -1;}
  .footer-col--contact{grid-column:1 / -1;}
}

@media (max-width:640px){
  :root{--gutter:16px;}
  .brand__domain{display:none;}
  .brand__name{font-size:var(--t-14);}
  .brand__mark{padding:6px 7px;}
  .hub-search__field{padding:8px 10px;}
  .hub-search__input{width:0;opacity:0;padding:0;}
  .hub-search:focus-within .hub-search__input{width:42vw;opacity:1;}
  .hub-search__panel{width:min(340px,92vw);right:-6px;}
  .grid--12{grid-template-columns:1fr;}
  .col-3,.col-4,.col-5,.col-6,.col-8,.col-9,.col-12{grid-column:1 / -1;}
  .site-footer__grid{grid-template-columns:1fr;}
  .site-footer__base{flex-direction:column;align-items:flex-start;gap:10px;}
  .footer-legal-links{margin-left:0;}
  h1{font-size:clamp(28px,9vw,40px);}
}

/* ---------- 15. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .has-js [data-reveal]:not(.is-visible){opacity:1;transform:none;}
  .progress-rail__bar{transition:none;}
  .btn:hover,.tab:hover{transform:none;}
  .site-footer::before,body::before{opacity:.4;}
}