/* ===== 变量与重置 ===== */
:root{
  --ink:#071823;
  --moss:#0B2A23;
  --panel:#123B33;
  --panel-blue:#102D44;
  --cyan:#4DF3D4;
  --orange:#FF8A3D;
  --signal:#B8FF5A;
  --coral:#FF6F61;
  --text:#ECFBF5;
  --muted:#9BC0B7;
  --line:#2A5A50;
  --line-soft:rgba(42,90,80,.6);
  --font-sans:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --r-lg:28px;
  --r-md:18px;
  --r-sm:12px;
  --r-pill:999px;
  --gutter:clamp(16px,4vw,48px);
  --maxw:1360px;
  --header-h:96px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,
*::before,
*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:var(--header-h);
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(42,90,80,.16) 1px,transparent 1px),
    linear-gradient(90deg,rgba(42,90,80,.16) 1px,transparent 1px);
  background-size:100% 112px,112px 100%;
  color:var(--text);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{max-width:100%;display:block}
a{color:var(--cyan);text-decoration:none}
a:hover{color:var(--text)}
button{font:inherit;color:inherit}
:where(a,button,[tabindex],summary,input,select,textarea):focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}
::selection{background:var(--cyan);color:var(--ink)}

/* ===== 基础容器与排版 ===== */
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding-left:var(--gutter);
  padding-right:var(--gutter);
}
.container--narrow{max-width:840px}
.section{
  position:relative;
  padding:clamp(48px,7vw,104px) 0;
}
.section--deep{background:var(--moss)}
.section--blue{background:var(--panel-blue)}
.section--board{background:linear-gradient(180deg,var(--ink) 0%,var(--moss) 100%)}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:clamp(24px,4vw,44px);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
  margin:0 0 14px;
}
.eyebrow::before{
  content:"";
  width:26px;
  height:1px;
  background:currentColor;
  opacity:.75;
}
.display{
  font-size:clamp(48px,9vw,128px);
  font-weight:250;
  line-height:1;
  letter-spacing:-.03em;
  margin:0;
}
.h2{
  font-size:clamp(28px,4vw,52px);
  font-weight:700;
  line-height:1.12;
  letter-spacing:-.02em;
  margin:0;
}
.h3{
  font-size:clamp(19px,2.2vw,26px);
  font-weight:650;
  line-height:1.3;
  letter-spacing:-.01em;
  margin:0;
}
.lede{
  font-size:clamp(16.5px,1.4vw,19.5px);
  line-height:1.85;
  color:var(--muted);
  max-width:62ch;
}
.mono{font-family:var(--font-mono);letter-spacing:.08em}
.divider{
  height:1px;
  border:0;
  background:var(--line);
  margin:clamp(24px,4vw,48px) 0;
}

/* ===== 按钮与胶囊 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:var(--r-pill);
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:600;
  line-height:1.1;
  text-decoration:none;
  cursor:pointer;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn--primary{
  background:var(--orange);
  color:var(--ink);
  box-shadow:0 12px 28px -16px rgba(255,138,61,.95);
}
.btn--primary:hover{
  color:var(--ink);
  transform:translateY(-2px);
  box-shadow:0 18px 34px -16px rgba(255,138,61,1);
}
.btn--ghost{
  background:rgba(77,243,212,.06);
  border-color:rgba(77,243,212,.45);
  color:var(--cyan);
}
.btn--ghost:hover{
  background:rgba(77,243,212,.14);
  border-color:var(--cyan);
  color:var(--text);
}
.btn--small{padding:9px 16px;font-size:13.5px}
.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:rgba(18,59,51,.7);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
  white-space:nowrap;
}
.pill--cyan{color:var(--cyan);border-color:rgba(77,243,212,.45);background:rgba(77,243,212,.1)}
.pill--orange{color:var(--orange);border-color:rgba(255,138,61,.45);background:rgba(255,138,61,.1)}
.pill--signal{color:var(--signal);border-color:rgba(184,255,90,.45);background:rgba(184,255,90,.1)}
.pill--coral{color:var(--coral);border-color:rgba(255,111,97,.5);background:rgba(255,111,97,.1)}

/* ===== 跳转链接 ===== */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  padding:12px 20px;
  border-radius:var(--r-pill);
  background:var(--cyan);
  color:var(--ink);
  font-weight:700;
  text-decoration:none;
  transform:translateY(-200%);
  transition:transform .22s var(--ease);
}
.skip-link:focus{
  transform:translateY(0);
  color:var(--ink);
}

/* ===== 框架式页头 ===== */
.frame-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:80;
  padding:0 var(--gutter);
  background:rgba(7,24,35,.94);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  box-shadow:0 22px 48px -34px rgba(0,0,0,.95);
  color:var(--text);
  transition:box-shadow .3s var(--ease);
}
.frame-header::before,
.frame-header::after{
  content:"";
  position:absolute;
  bottom:-24px;
  width:1px;
  height:24px;
  background:var(--cyan);
  opacity:.55;
}
.frame-header::before{left:14px}
.frame-header::after{right:14px}
.frame-header__inner{
  width:100%;
  max-width:calc(var(--maxw) - var(--gutter) * 2);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,32px);
  min-height:72px;
  padding:8px 0;
  transition:min-height .3s var(--ease);
}
.frame-header[data-scrolled="true"] .frame-header__inner{min-height:60px}
.frame-header[data-scrolled="true"]{box-shadow:0 26px 50px -32px rgba(0,0,0,1)}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  color:inherit;
  text-decoration:none;
}
.brand:hover{color:inherit}
.brand__mark{
  position:relative;
  width:36px;
  height:36px;
  border-radius:13px;
  border:1px solid var(--line);
  background:linear-gradient(140deg,var(--panel) 0%,var(--moss) 100%);
  display:grid;
  place-items:center;
}
.brand__mark::before{
  content:"";
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 4px rgba(77,243,212,.16);
}
.brand__mark::after{
  content:"";
  position:absolute;
  inset:5px;
  border-radius:9px;
  border:1px solid rgba(77,243,212,.28);
}
.brand__text{display:flex;flex-direction:column;line-height:1.2}
.brand__name{font-size:15.5px;font-weight:700;letter-spacing:.02em}
.brand__tag{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}
.frame-nav{margin-left:auto}
.frame-nav__list{display:flex;align-items:center;gap:clamp(10px,1.6vw,24px)}
.frame-nav__item{position:relative}
.frame-nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 2px;
  color:var(--muted);
  font-size:14.5px;
  font-weight:500;
  letter-spacing:.02em;
  text-decoration:none;
  transition:color .2s var(--ease);
}
.frame-nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .28s var(--ease),background-color .2s var(--ease);
}
.frame-nav__link:hover{color:var(--text)}
.frame-nav__link:hover::after{transform:scaleX(1)}
.frame-nav__link[aria-current="page"]{color:var(--text)}
.frame-nav__link[aria-current="page"]::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--orange);
}
.frame-nav__link[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--orange);
}
.frame-nav__item--cta{display:none}
.frame-nav__link--cta{
  margin-top:6px;
  padding:13px 16px;
  border-radius:var(--r-pill);
  background:var(--orange);
  color:var(--ink);
  font-weight:700;
  justify-content:center;
}
.frame-nav__link--cta:hover{color:var(--ink)}
.frame-nav__link--cta::after{display:none}
.frame-header__actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.nav-toggle{
  display:none;
  width:46px;
  height:46px;
  padding:0;
  border:1px solid var(--line);
  border-radius:14px;
  background:rgba(18,59,51,.72);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(77,243,212,.6)}
.nav-toggle__bars{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
}
.nav-toggle__bar{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--text);
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.frame-header[data-open="true"] .nav-toggle{
  border-color:var(--cyan);
  background:rgba(77,243,212,.14);
}
.frame-header[data-open="true"] .nav-toggle__bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.frame-header[data-open="true"] .nav-toggle__bar:nth-child(2){opacity:0}
.frame-header[data-open="true"] .nav-toggle__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.frame-header__rail{
  width:100%;
  max-width:calc(var(--maxw) - var(--gutter) * 2);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 0 8px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
}
.frame-header__rail-label{color:rgba(155,192,183,.85)}
.frame-header__rail-meta{white-space:nowrap}
.status-dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--signal);
  box-shadow:0 0 0 4px rgba(184,255,90,.14);
  animation:dot-pulse 2.6s var(--ease) infinite;
  flex:0 0 auto;
}
.progress{
  position:relative;
  display:block;
  margin-left:auto;
  width:min(240px,36vw);
  height:2px;
  border-radius:2px;
  background:rgba(155,192,183,.22);
  overflow:hidden;
}
.progress__bar{
  display:block;
  width:0;
  height:100%;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--signal));
}
@keyframes dot-pulse{
  0%,100%{box-shadow:0 0 0 4px rgba(184,255,90,.14)}
  50%{box-shadow:0 0 0 7px rgba(184,255,90,.05)}
}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;
  overflow:hidden;
  padding:clamp(44px,6vw,84px) 0 28px;
  background:linear-gradient(180deg,var(--moss) 0%,var(--ink) 64%);
  border-top:1px solid var(--line);
  color:var(--text);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--signal) 38%,var(--orange) 72%,var(--coral) 100%);
  opacity:.9;
}
.site-footer::after{
  content:"";
  position:absolute;
  right:-90px;
  bottom:-140px;
  width:360px;
  height:360px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(77,243,212,.16),transparent 68%);
  pointer-events:none;
}
.footer__top{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.25fr);
  gap:clamp(28px,5vw,72px);
  align-items:start;
}
.footer__brand{max-width:46ch}
.footer__eyebrow{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--cyan);
  margin:0 0 16px;
}
.footer__display{
  margin:0 0 18px;
  font-size:clamp(32px,4.4vw,58px);
  font-weight:250;
  line-height:1.08;
  letter-spacing:-.025em;
}
.footer__note{
  margin:0 0 24px;
  color:var(--muted);
  font-size:15.5px;
  line-height:1.8;
}
.footer__tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:20px;
}
.footer__nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(20px,3vw,40px);
}
.footer__col-title{
  margin:0 0 14px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}
.footer__list{display:grid;gap:10px}
.footer__link{
  display:inline-block;
  color:var(--text);
  font-size:15.5px;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer__link[aria-current="page"]{color:var(--cyan);border-bottom-color:rgba(77,243,212,.5)}
.footer__contact{
  position:relative;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:18px;
  margin-top:clamp(32px,5vw,56px);
  padding-top:clamp(20px,3vw,28px);
  border-top:1px solid var(--line);
}
.footer__contact-label{
  display:block;
  margin-bottom:4px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer__contact-value{
  display:block;
  font-size:15px;
  line-height:1.65;
  word-break:break-word;
}
.footer__legal{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 24px;
  margin-top:clamp(24px,4vw,40px);
  padding-top:18px;
  border-top:1px solid var(--line);
}
.footer__legal-text{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--muted);
}

/* ===== 卡片、研究板、网格 ===== */
.grid{display:grid;gap:clamp(16px,2.2vw,28px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid--bento{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{
  position:relative;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(77,243,212,.45);
  box-shadow:0 26px 54px -32px rgba(0,0,0,.95);
}
.card__bar{height:5px;background:var(--cyan)}
.card__bar--orange{background:var(--orange)}
.card__bar--signal{background:var(--signal)}
.card__bar--coral{background:var(--coral)}
.card__body{padding:clamp(18px,2.4vw,28px);display:flex;flex-direction:column;gap:10px}
.card__meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
}
.card__title{
  font-size:clamp(18px,2vw,22px);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.01em;
}
.card__title a{color:var(--text)}
.card__title a:hover{color:var(--cyan)}
.board{
  display:grid;
  gap:1px;
  background:var(--line-soft);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
}
.board__head{
  padding:16px 20px;
  background:var(--panel);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--cyan);
}
.board__row{
  padding:18px 20px;
  background:var(--ink);
  font-size:15.5px;
  line-height:1.8;
  color:var(--muted);
}

/* ===== 分段切换 ===== */
.tabs{display:block}
.tabs__list{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  width:fit-content;
  max-width:100%;
  padding:6px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:rgba(18,59,51,.55);
}
.tabs__tab{
  appearance:none;
  border:0;
  padding:10px 18px;
  border-radius:var(--r-pill);
  background:transparent;
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.tabs__tab:hover{color:var(--text)}
.tabs__tab[aria-selected="true"]{
  background:var(--cyan);
  color:var(--ink);
  font-weight:600;
}
.tabs__panel{padding-top:clamp(20px,3vw,32px)}
.tabs__panel[hidden]{display:none}
.tabs__panel:not([hidden]){animation:panel-in .32s var(--ease) both}
@keyframes panel-in{
  from{opacity:0;transform:translateY(8px)}
  to{opacity:1;transform:none}
}

/* ===== 媒体容器 ===== */
.media{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:linear-gradient(140deg,var(--panel) 0%,var(--panel-blue) 100%);
  aspect-ratio:16/10;
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  background:linear-gradient(180deg,rgba(7,24,35,0) 45%,rgba(7,24,35,.86) 100%);
  pointer-events:none;
}
.media--square{aspect-ratio:1/1}
.media--wide{aspect-ratio:21/9}
.media__img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media__code{
  position:absolute;
  top:12px;
  left:12px;
  z-index:2;
  padding:4px 10px;
  border-radius:var(--r-pill);
  border:1px solid rgba(184,255,90,.35);
  background:rgba(7,24,35,.78);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--signal);
}
.media__caption{
  position:absolute;
  left:16px;
  right:16px;
  bottom:14px;
  z-index:2;
  font-size:13.5px;
  line-height:1.6;
  color:var(--text);
}

/* ===== 面包屑 ===== */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 clamp(18px,3vw,28px);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--muted);
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs__item+ .breadcrumbs__item::before{
  content:"/";
  color:rgba(155,192,183,.5);
}
.breadcrumbs__link{color:var(--muted);text-decoration:none;transition:color .2s var(--ease)}
.breadcrumbs__link:hover{color:var(--cyan)}
.breadcrumbs__item[aria-current="page"]{color:var(--cyan)}

/* ===== 显现动画 ===== */
html[data-reveal="on"] [data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
html[data-reveal="on"] [data-reveal].is-in{
  opacity:1;
  transform:none;
}

/* ===== 桌面富余布局 ===== */
@media (min-width:900px){
  .grid--bento{grid-template-columns:repeat(6,minmax(0,1fr))}
  .grid--bento > *{grid-column:span 2}
  .grid--bento > .is-wide{grid-column:span 4}
}

/* ===== 平板与手机 ===== */
@media (max-width:940px){
  :root{--header-h:84px}
  body{font-size:16.5px;line-height:1.8}
  .frame-header__inner{min-height:58px;gap:10px}
  .frame-header[data-scrolled="true"] .frame-header__inner{min-height:54px}
  .brand__mark{width:32px;height:32px;border-radius:11px}
  .brand__name{font-size:14px}
  .brand__tag{display:none}
  .frame-nav{
    display:none;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    margin:0;
    padding:12px var(--gutter) 20px;
    background:rgba(11,42,35,.98);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    border-radius:0 0 var(--r-lg) var(--r-lg);
    box-shadow:0 30px 50px -30px rgba(0,0,0,1);
  }
  .frame-nav[data-open="true"]{display:block;animation:panel-in .26s var(--ease) both}
  .frame-nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .frame-nav__item{width:100%}
  .frame-nav__link{
    padding:14px 12px;
    font-size:16.5px;
    border-radius:12px;
    justify-content:flex-start;
  }
  .frame-nav__link::after{display:none}
  .frame-nav__link:hover{background:rgba(77,243,212,.08)}
  .frame-nav__link[aria-current="page"]{
    background:rgba(77,243,212,.1);
    color:var(--cyan);
  }
  .frame-nav__link[aria-current="page"]::before{background:var(--cyan)}
  .frame-nav__item--cta{display:block;margin-top:10px}
  .frame-nav__item--cta .frame-nav__link--cta{justify-content:center;color:var(--ink)}
  .frame-header__actions > .btn{display:none}
  .nav-toggle{display:flex}
  .frame-header__rail{font-size:9.5px;letter-spacing:.12em;gap:8px;padding-bottom:7px}
  .progress{width:min(150px,34vw)}
  .footer__top{grid-template-columns:minmax(0,1fr)}
  .footer__brand{max-width:none}
  .footer__display{font-size:clamp(30px,7vw,42px)}
}
@media (max-width:560px){
  .footer__nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 18px}
  .footer__contact{grid-template-columns:minmax(0,1fr)}
  .footer__legal{flex-direction:column}
  .frame-header__rail-label{display:none}
  .display{font-size:clamp(40px,12vw,64px)}
}

/* ===== 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;
  }
  html[data-reveal="on"] [data-reveal]{
    opacity:1 !important;
    transform:none !important;
  }
  .status-dot{animation:none}
}