/* ============================================================
   6686主页 · 共享样式  /assets/site.css
   深海蓝 + 银灰 · 电光青 / 暖橙点色 · 奶油底出版质感
   ============================================================ */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,table{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}

:root{
  --ink:#0A1F3C;
  --ink-deep:#06152B;
  --ink-soft:#0F2E52;
  --silver:#C7D0DB;
  --cyan:#00E5FF;
  --cyan-ink:#00849B;
  --amber:#FF8A3D;
  --cream:#F4EFE6;
  --brown:#1E1A16;
  --red:#E14B2A;
  --mist:#EAF2FA;
  --slate:#5A6B7B;

  --wrap:1240px;
  --gutter:clamp(16px,4vw,40px);

  --font-head:"Noto Sans SC","HarmonyOS Sans SC","Source Han Sans SC","PingFang SC",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Consolas,monospace;

  --line:2px solid var(--brown);
  --line-ink:2px solid var(--ink);
  --rule:1px solid rgba(30,26,22,.16);
  --shadow-brut:6px 6px 0 rgba(30,26,22,.92);
  --shadow-blue:6px 6px 0 rgba(10,31,60,.9);
  --shadow-soft:0 18px 42px -24px rgba(6,21,43,.7);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 中文排版基线 ---------- */
body{
  background:var(--cream);
  color:var(--brown);
  font-family:var(--font-body);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
p,li{text-wrap:pretty}
h1,h2,h3,h4,h5{
  font-family:var(--font-head);
  font-weight:900;
  line-height:1.14;
  letter-spacing:-.012em;
  color:var(--ink);
}
h1{font-size:clamp(40px,7vw,92px)}
h2{font-size:clamp(28px,4.4vw,54px)}
h3{font-size:clamp(20px,2.4vw,32px)}
h4{font-size:clamp(17px,1.6vw,21px)}
strong{font-weight:800}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}

/* ---------- 容器与通用结构 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.skip-link{
  position:absolute;
  left:14px;
  top:-70px;
  z-index:200;
  background:var(--cyan);
  color:var(--ink-deep);
  font-weight:800;
  font-size:14px;
  padding:10px 18px;
  border:2px solid var(--brown);
  transition:top .18s var(--ease);
}
.skip-link:focus{top:14px}

.rule{height:2px;border:0;background:var(--brown);margin:0}
.section{padding-block:clamp(48px,7vw,104px)}
.section--tight{padding-block:clamp(28px,4vw,56px)}
.section--mist{background:var(--mist)}
.section--ink{background:var(--ink);color:var(--silver)}
.section--ink h1,.section--ink h2,.section--ink h3,.section--ink h4{color:var(--cream)}
.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  padding-bottom:16px;
  margin-bottom:clamp(22px,3vw,42px);
  border-bottom:var(--line);
}
.section--ink .section__head{border-bottom-color:rgba(199,208,219,.35)}
.section__eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--slate);
  margin-bottom:8px;
}
.section--ink .section__eyebrow{color:var(--cyan)}
.section__title{font-size:clamp(28px,4.4vw,52px)}
.section__lead{max-width:58ch;font-size:17px;color:var(--slate)}
.section--ink .section__lead{color:rgba(199,208,219,.85)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 22px;
  font-family:var(--font-head);
  font-weight:800;
  font-size:15px;
  letter-spacing:.02em;
  line-height:1.2;
  background:var(--cream);
  color:var(--brown);
  border:2px solid var(--brown);
  box-shadow:4px 4px 0 var(--brown);
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),
             background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--brown)}
.btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--brown)}
.btn--primary{background:var(--amber);color:var(--brown)}
.btn--primary:hover{background:#FFA05F}
.btn--dark{background:var(--ink);color:var(--cream);border-color:var(--ink-deep);box-shadow:4px 4px 0 var(--cyan)}
.btn--dark:hover{box-shadow:7px 7px 0 var(--cyan)}
.btn--ghost{
  background:transparent;
  color:var(--cream);
  border-color:var(--silver);
  box-shadow:4px 4px 0 rgba(0,229,255,.35);
}
.btn--ghost:hover{
  background:rgba(0,229,255,.14);
  border-color:var(--cyan);
  color:var(--cream);
  box-shadow:7px 7px 0 rgba(0,229,255,.45);
}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  text-transform:uppercase;
  padding:4px 11px;
  border:1px solid currentColor;
  border-radius:999px;
  color:var(--slate);
  white-space:nowrap;
}
.tag--cyan{color:var(--cyan-ink);background:rgba(0,229,255,.15);border-color:rgba(0,132,155,.5)}
.tag--amber{color:#95460F;background:rgba(255,138,61,.18);border-color:rgba(255,138,61,.6)}
.tag--red{color:var(--red);background:rgba(225,75,42,.12);border-color:rgba(225,75,42,.45)}
.tag--dark{color:var(--silver);background:rgba(199,208,219,.08);border-color:rgba(199,208,219,.4)}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.2vw,28px)}
.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(0,1.6fr) minmax(0,1fr)}
.grid--rail{grid-template-columns:minmax(0,244px) minmax(0,1fr);align-items:start}
@media (max-width:1080px){
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--asym{grid-template-columns:minmax(0,1fr)}
  .grid--rail{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:760px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 卡片 ---------- */
.card{
  position:relative;
  background:#fff;
  border:var(--line);
  box-shadow:var(--shadow-brut);
  padding:clamp(18px,2vw,26px);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:8px 12px 0 rgba(10,31,60,.88)}
.card--ink{background:var(--ink);color:var(--silver);border-color:var(--ink-deep);box-shadow:var(--shadow-blue)}
.card--ink .card__title,.card--ink h3,.card--ink h4{color:var(--cream)}
.card--ink .card__body{color:rgba(199,208,219,.82)}
.card--ink .card__meta{color:rgba(199,208,219,.6)}
.card--cream{background:var(--cream)}
.card__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:12px;
}
.card__num{font-family:var(--font-mono);font-size:13px;letter-spacing:.12em;color:var(--slate)}
.card--ink .card__num{color:var(--cyan)}
.card__title{font-size:clamp(19px,2vw,24px);margin-bottom:8px}
.card__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--slate)}
.card__body{font-size:16px;color:var(--slate)}
.card__foot{
  margin-top:16px;
  padding-top:14px;
  border-top:var(--rule);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
}
.card--ink .card__foot{border-top-color:rgba(199,208,219,.24)}

/* ---------- 索引列表 ---------- */
.index-list{border-top:var(--line)}
.index-list__item{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  gap:16px;
  align-items:baseline;
  padding:16px 4px;
  border-bottom:1px solid rgba(30,26,22,.18);
  color:inherit;
  transition:background-color .18s var(--ease),padding-left .18s var(--ease);
}
.index-list__item:hover{background:rgba(0,229,255,.11);padding-left:14px}
.index-list__num{font-family:var(--font-mono);font-size:13px;color:var(--cyan-ink);min-width:2.8em}
.index-list__title{font-family:var(--font-head);font-weight:800;font-size:clamp(16px,1.5vw,19px);color:var(--ink)}
.index-list__meta{font-family:var(--font-mono);font-size:12px;color:var(--slate);white-space:nowrap}

/* ---------- 折叠面板 ---------- */
.accordion{border-top:var(--line)}
.accordion__item{border-bottom:var(--line)}
.accordion__btn{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 4px;
  background:transparent;
  border:0;
  text-align:left;
  font-family:var(--font-head);
  font-weight:800;
  font-size:clamp(17px,1.6vw,20px);
  color:var(--ink);
  cursor:pointer;
  transition:background-color .18s var(--ease),padding-left .18s var(--ease);
}
.accordion__btn:hover{background:rgba(0,229,255,.1);padding-left:14px}
.accordion__icon{position:relative;flex:none;width:22px;height:22px}
.accordion__icon::before,.accordion__icon::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  background:var(--amber);
  transform:translate(-50%,-50%);
  transition:transform .2s var(--ease);
}
.accordion__icon::before{width:16px;height:2px}
.accordion__icon::after{width:2px;height:16px}
.accordion__btn[aria-expanded="true"] .accordion__icon::after{transform:translate(-50%,-50%) scaleY(0)}
.accordion__panel{
  overflow:hidden;
  max-height:0;
  visibility:hidden;
  transition:max-height .3s var(--ease),visibility .3s linear;
}
.accordion__panel.is-open{visibility:visible}
.accordion__inner{padding:0 4px 22px;color:var(--slate);max-width:76ch;font-size:16px}

/* ---------- 侧边流程导航（技能树式路径） ---------- */
.rail{
  position:sticky;
  top:112px;
  align-self:start;
  background:#fff;
  border:var(--line-ink);
  box-shadow:6px 6px 0 rgba(10,31,60,.14);
  padding:18px 16px 22px;
}
.rail__title{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--slate);
  padding-bottom:12px;
  border-bottom:1px dashed rgba(10,31,60,.28);
}
.rail__list{display:grid;gap:2px;margin-top:14px;counter-reset:rail}
.rail__link{
  counter-increment:rail;
  display:grid;
  grid-template-columns:28px minmax(0,1fr);
  gap:10px;
  align-items:center;
  padding:10px 8px;
  font-size:14.5px;
  font-weight:600;
  color:var(--ink);
  border-left:3px solid transparent;
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.rail__link::before{
  content:counter(rail,decimal-leading-zero);
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--cyan-ink);
}
.rail__link:hover{background:rgba(0,229,255,.13)}
.rail__link[aria-current="true"]{
  border-left-color:var(--amber);
  background:rgba(0,229,255,.18);
  color:var(--ink-deep);
}
@media (max-width:1080px){
  .rail{position:static;top:auto;box-shadow:4px 4px 0 rgba(10,31,60,.14)}
  .rail__list{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:9px;
  padding-block:14px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--slate);
}
.breadcrumb a{border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.breadcrumb a:hover{color:var(--ink);border-bottom-color:var(--cyan)}
.breadcrumb__sep{color:rgba(90,107,123,.55)}
.breadcrumb__current{color:var(--ink);font-weight:700}

/* ---------- 长文容器 ---------- */
.prose{max-width:72ch;font-size:17px;line-height:1.85;color:#2B2620}
.prose>*+*{margin-top:1.05em}
.prose h2{margin-top:1.9em;font-size:clamp(24px,3vw,34px)}
.prose h3{margin-top:1.5em}
.prose ul,.prose ol{padding-left:1.4em;list-style:revert}
.prose li+li{margin-top:.45em}
.prose a{color:var(--cyan-ink);border-bottom:2px solid rgba(0,132,155,.4)}
.prose a:hover{border-bottom-color:var(--cyan-ink)}
.prose blockquote{border-left:4px solid var(--amber);padding:6px 0 6px 18px;color:var(--slate)}
.prose code{font-family:var(--font-mono);font-size:.92em;background:rgba(10,31,60,.07);padding:2px 6px}

/* ---------- 图框（响应式图片容器基础规则） ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  border:var(--line);
  background-color:var(--ink);
  background-image:linear-gradient(135deg,var(--ink) 0%,var(--ink-deep) 58%,#0A2A4A 100%);
  aspect-ratio:16/10;
}
.media__img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.media:hover .media__img{transform:scale(1.045)}
.media__badge{
  position:absolute;
  left:0;
  bottom:0;
  padding:6px 12px;
  background:var(--ink-deep);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  border-top:2px solid var(--cyan);
  border-right:2px solid var(--cyan);
}
.media__caption{margin-top:10px;font-size:14px;color:var(--slate)}
.media--wide{aspect-ratio:21/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:4/5}
.media--tilt{transform:rotate(-1.2deg)}
.media-grid{
  display:grid;
  gap:clamp(14px,2vw,24px);
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
}

/* ---------- 数据桩 ---------- */
.stat{border-left:3px solid var(--cyan);padding-left:14px}
.stat__num{
  font-family:var(--font-mono);
  font-size:clamp(28px,4vw,44px);
  font-weight:700;
  line-height:1;
  color:var(--ink);
}
.stat__label{margin-top:8px;font-size:14px;color:var(--slate)}
.section--ink .stat__num{color:var(--cyan)}
.section--ink .stat__label{color:rgba(199,208,219,.78)}

/* ---------- 首次显现 ---------- */
html.is-js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
html.is-js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 滚动进度条（脚本注入） ---------- */
.progress{
  position:fixed;
  left:0;
  right:0;
  top:0;
  height:3px;
  z-index:90;
  pointer-events:none;
  background:transparent;
}
.progress__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--cyan),var(--amber));
  box-shadow:0 0 12px rgba(0,229,255,.7);
}

/* ---------- 返回顶部（脚本注入） ---------- */
.to-top{
  position:fixed;
  right:20px;
  bottom:22px;
  z-index:70;
  width:48px;
  height:48px;
  display:grid;
  place-items:center;
  background:var(--ink);
  color:var(--cyan);
  border:2px solid var(--cyan);
  font-family:var(--font-mono);
  font-size:16px;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s linear,background-color .18s var(--ease),color .18s var(--ease);
}
.to-top.is-on{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--cyan);color:var(--ink-deep)}

/* ============================================================
   页头
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--cream);
  border-bottom:3px solid var(--brown);
}
.site-header__ticker{
  background:var(--ink-deep);
  border-bottom:1px solid rgba(199,208,219,.24);
  color:var(--silver);
}
.ticker__inner{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:36px;
  padding-block:6px;
  flex-wrap:wrap;
}
.ticker__item{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.09em;
  color:rgba(199,208,219,.9);
}
.ticker__dot{
  width:8px;
  height:8px;
  flex:none;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 10px rgba(0,229,255,.9);
}
.ticker__spacer{flex:1 1 20px}

.site-header__bar{background:var(--cream)}
.bar__inner{
  display:flex;
  align-items:center;
  gap:clamp(14px,2.6vw,36px);
  min-height:80px;
  padding-block:10px;
}

.brand{
  display:flex;
  align-items:center;
  gap:14px;
  color:var(--brown);
  flex:none;
}
.brand__mark{
  position:relative;
  display:grid;
  place-items:center;
  width:58px;
  height:58px;
  flex:none;
  overflow:hidden;
  background:var(--ink);
  color:var(--cyan);
  border:2px solid var(--brown);
  box-shadow:4px 4px 0 var(--amber);
  font-family:var(--font-mono);
  font-weight:700;
  font-size:17px;
  letter-spacing:.03em;
  transition:box-shadow .18s var(--ease),transform .18s var(--ease),color .18s var(--ease);
}
.brand__mark::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:4px;
  background:linear-gradient(90deg,var(--cyan),var(--amber));
}
.brand:hover .brand__mark{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--amber);color:var(--cream)}
.brand__text{display:flex;flex-direction:column;line-height:1.24}
.brand__name{font-family:var(--font-head);font-weight:900;font-size:22px;color:var(--ink);letter-spacing:.01em}
.brand__tagline{font-family:var(--font-mono);font-size:12px;color:var(--slate);letter-spacing:.04em}

.site-nav{
  display:flex;
  align-items:center;
  gap:clamp(8px,1.8vw,24px);
  margin-left:auto;
}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:2px;
}
.site-nav__link{
  position:relative;
  display:block;
  padding:10px 12px;
  font-family:var(--font-head);
  font-weight:700;
  font-size:15px;
  color:var(--brown);
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:4px;
  height:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease),background-color .22s var(--ease);
}
.site-nav__link:hover{color:var(--ink)}
.site-nav__link:hover::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{
  color:var(--ink);
  background-image:linear-gradient(180deg,transparent 62%,rgba(0,229,255,.28) 62%);
}
.site-nav__link[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--amber);
}
.site-nav__cta{white-space:nowrap;padding:12px 18px;font-size:14.5px}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  background:var(--ink);
  color:var(--cream);
  border:2px solid var(--brown);
  box-shadow:4px 4px 0 var(--brown);
  font-family:var(--font-head);
  font-weight:800;
  font-size:14px;
  cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-toggle__bars{display:grid;gap:4px}
.nav-toggle__bars i{display:block;width:18px;height:2px;background:var(--cyan);transition:background-color .18s var(--ease)}
.nav-toggle[aria-expanded="true"]{background:var(--amber);color:var(--brown);box-shadow:4px 4px 0 var(--ink)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i{background:var(--brown)}

@media (max-width:1120px){
  .site-nav__link{padding:10px 9px;font-size:14.5px}
  .site-nav__link::after{left:9px;right:9px}
}

@media (max-width:959px){
  .bar__inner{justify-content:space-between}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .brand__mark{width:50px;height:50px;font-size:15px}
  .brand__name{font-size:19px}
  .site-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    margin:0;
    padding:10px var(--gutter) 24px;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:var(--ink-deep);
    border-bottom:3px solid var(--cyan);
    box-shadow:0 26px 44px -22px rgba(6,21,43,.85);
    max-height:calc(100vh - 120px);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s linear;
  }
  .site-nav[data-open]{
    opacity:1;
    visibility:visible;
    transform:none;
    pointer-events:auto;
  }
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__link{
    color:var(--silver);
    font-size:16.5px;
    padding:15px 6px;
    border-bottom:1px solid rgba(199,208,219,.18);
  }
  .site-nav__link::after{display:none}
  .site-nav__link:hover{color:var(--cyan);background-color:rgba(0,229,255,.08)}
  .site-nav__link[aria-current="page"]{
    color:var(--cream);
    background-image:none;
    box-shadow:inset 4px 0 0 var(--amber);
    padding-left:18px;
  }
  .site-nav__cta{margin-top:18px;width:100%}
}

@media (max-width:640px){
  .brand__tagline{font-size:11px}
  .ticker__item--opt{display:none}
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  background:var(--ink);
  color:var(--silver);
  border-top:3px solid var(--brown);
}
.site-footer__marquee{
  overflow:hidden;
  background:var(--ink-deep);
  border-bottom:1px solid rgba(199,208,219,.2);
  padding-block:18px;
}
.marquee__track{
  display:flex;
  align-items:center;
  gap:clamp(20px,4vw,52px);
  padding-inline:var(--gutter);
  white-space:nowrap;
}
.marquee__word{
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(28px,6vw,72px);
  line-height:1;
  letter-spacing:.02em;
  color:transparent;
  -webkit-text-stroke:1.5px rgba(0,229,255,.6);
}
.marquee__word--solid{color:var(--cream);-webkit-text-stroke:0}

.site-footer__grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:clamp(24px,3vw,48px);
  padding-block:clamp(36px,5vw,66px);
}
.site-footer__logo{
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(20px,2.3vw,27px);
  line-height:1.3;
  color:var(--cream);
  margin-bottom:12px;
}
.site-footer__desc{
  font-size:15.5px;
  line-height:1.75;
  color:rgba(199,208,219,.8);
  max-width:40ch;
}
.site-footer__legal{
  margin-top:16px;
  display:inline-block;
  padding:5px 11px;
  border:1px solid rgba(199,208,219,.35);
  color:var(--silver);
  font-size:12px;
}
.site-footer__title{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:16px;
}
.site-footer__list{display:grid;gap:11px}
.site-footer__list a{
  font-size:15.5px;
  color:var(--silver);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease),padding-left .18s var(--ease);
}
.site-footer__list a:hover{
  color:var(--cyan);
  border-bottom-color:var(--cyan);
  padding-left:5px;
}
.site-footer__contact{
  display:grid;
  gap:9px;
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--cream);
  word-break:break-word;
}
.site-footer__plain{font-family:var(--font-body);font-size:15px;color:var(--silver)}
.site-footer__note{
  margin-top:16px;
  padding-left:12px;
  border-left:2px solid var(--amber);
  font-size:13.5px;
  line-height:1.7;
  color:rgba(199,208,219,.7);
  max-width:34ch;
}
.site-footer__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-block:20px;
  border-top:1px solid rgba(199,208,219,.2);
  font-size:13px;
  color:rgba(199,208,219,.66);
}

@media (max-width:1080px){
  .site-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .site-footer__grid{grid-template-columns:minmax(0,1fr)}
  .site-footer__base{flex-direction:column;align-items:flex-start}
  .to-top{right:14px;bottom:14px;width:44px;height:44px}
}

/* ============================================================
   动效偏好
   ============================================================ */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html.is-js [data-reveal]{opacity:1;transform:none}
  .card:hover,.btn:hover,.media:hover .media__img{transform:none}
}