/* ===========================================================
   fast-macau-wei.com.cn — /assets/site.css
   共享外壳：变量、重置、中文排版、头部、页脚、通用组件
   =========================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#0B0D12;
  --panel:#171B24;
  --panel-2:#12151D;
  --cream:#F2E7D5;
  --cream-ink:#2A2118;
  --gold:#F5A73B;
  --gold-soft:#FFD79A;
  --ember:#DF5A2C;
  --ice:#78C6DB;
  --mist:#DCEBF0;
  --stone:#8A8F99;

  --rail-line:rgba(242,231,213,.14);
  --rail-line-soft:rgba(242,231,213,.08);
  --rail-x:clamp(12px,2.2vw,30px);
  --shell-max:1400px;
  --content-max:1140px;
  --content-narrow:720px;

  --font-display:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:var(--font-display);
  --font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono",Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --radius-s:8px;
  --radius-m:14px;
  --radius-l:22px;
  --shadow-1:0 12px 30px -24px rgba(0,0,0,.92);
  --shadow-2:0 26px 54px -32px rgba(0,0,0,.96);
  --ease:cubic-bezier(.22,.7,.3,1);
}

/* ---------- 2. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  overflow-x:clip;
}
body{
  margin:0;
  background-color:var(--ink);
  background-image:
    radial-gradient(720px 460px at 6% -10%, rgba(245,167,59,.15), transparent 70%),
    radial-gradient(640px 420px at 98% 4%, rgba(120,198,219,.11), transparent 72%);
  background-repeat:no-repeat;
  color:var(--cream);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.005em;
}
body::before,
body::after{
  content:"";
  position:fixed;
  top:0;
  bottom:0;
  width:1px;
  background:var(--rail-line);
  pointer-events:none;
  z-index:4;
}
body::before{left:var(--rail-x)}
body::after{right:var(--rail-x)}
img,svg,video{max-width:100%;display:block}
h1,h2,h3,h4,p,ul,ol,figure,blockquote,details{margin:0}
ul,ol{padding:0}
a{color:var(--ice);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--gold-soft)}
button{font:inherit;color:inherit}
main [id]{scroll-margin-top:118px}

/* ---------- 3. 排版 ---------- */
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.14;letter-spacing:-.02em;color:var(--cream)}
.display{
  font-family:var(--font-display);
  font-weight:900;
  font-stretch:condensed;
  font-size:clamp(2.6rem,7vw,6.2rem);
  line-height:.95;
  letter-spacing:-.03em;
  color:var(--cream);
}
.section-title{font-size:clamp(1.55rem,3.2vw,2.55rem);font-weight:800;line-height:1.12;letter-spacing:-.025em}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--gold);
}
.lede{font-size:clamp(1rem,1.3vw,1.16rem);line-height:1.85;color:rgba(242,231,213,.8);max-width:40em}
.prose{max-width:42em}
.prose p{max-width:38em;color:rgba(242,231,213,.82)}
.prose p+p{margin-top:1em}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.5em}
.mono{font-family:var(--font-mono);letter-spacing:.04em}

/* ---------- 4. 布局 ---------- */
.container{width:100%;max-width:var(--content-max);margin-inline:auto;padding-inline:clamp(16px,4vw,44px)}
.container--wide{max-width:var(--shell-max)}
.container--narrow{max-width:var(--content-narrow)}
.section{position:relative;padding-block:clamp(48px,7vw,104px)}
.section--cream{background:var(--cream);color:var(--cream-ink)}
.section--cream h1,.section--cream h2,.section--cream h3,.section--cream h4{color:var(--cream-ink)}
.section--cream .lede,.section--cream .prose p{color:rgba(42,33,24,.82)}
.section--panel{background:var(--panel)}
.section--flush{padding-block:0}
.rule{height:1px;border:0;background:var(--rail-line);margin-block:clamp(28px,4vw,56px)}
.rule--slant{
  height:clamp(14px,3vw,34px);
  border:0;
  background:linear-gradient(90deg,var(--gold),var(--ember) 45%,var(--ice));
  clip-path:polygon(0 78%,100% 0,100% 26%,0 100%);
  opacity:.85;
  margin-block:clamp(24px,4vw,52px);
}
.grid{display:grid;gap:clamp(16px,2.4vw,28px);grid-template-columns:minmax(0,1fr)}
@media (min-width:720px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1024px){
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
}
.stack{display:flex;flex-direction:column;gap:clamp(16px,2.4vw,28px)}
.stack--tight{gap:10px}
.visually-hidden{
  position:absolute;width:1px;height:1px;margin:-1px;padding:0;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 5. 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;border-radius:999px;border:1px solid transparent;
  font-size:14px;font-weight:700;letter-spacing:.02em;text-decoration:none;
  cursor:pointer;transition:transform .16s var(--ease),background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.btn--primary{
  background:linear-gradient(120deg,var(--gold),var(--ember));
  color:#1A1206;
  box-shadow:0 12px 26px -18px rgba(245,167,59,.95);
}
.btn--primary:hover{transform:translateY(-2px);color:#1A1206;box-shadow:0 18px 32px -18px rgba(245,167,59,1)}
.btn--mono{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  padding:8px 14px;border-radius:var(--radius-s);
  background:rgba(120,198,219,.10);border-color:rgba(120,198,219,.45);color:var(--mist);
}
.btn--mono:hover{background:rgba(120,198,219,.2);color:#fff;border-color:var(--ice)}
.btn--ghost{background:transparent;border-color:rgba(242,231,213,.28);color:var(--cream)}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold-soft)}
.btn--block{width:100%}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;
  background:rgba(220,235,240,.10);border:1px solid rgba(220,235,240,.24);color:var(--mist);
}
.tag--warm{background:rgba(245,167,59,.14);border-color:rgba(245,167,59,.42);color:var(--gold-soft)}

/* ---------- 6. 连点轨迹 ---------- */
.trail{display:inline-flex;align-items:center;gap:6px;vertical-align:middle}
.trail__dot{
  width:7px;height:7px;border-radius:50%;
  background:rgba(242,231,213,.2);
  transition:background-color .16s var(--ease),box-shadow .16s var(--ease),transform .16s var(--ease);
}
.trail__dot.is-lit{background:var(--gold);box-shadow:0 0 10px rgba(245,167,59,.85);transform:scale(1.18)}
.trail__dot:last-child.is-lit{background:var(--ember);box-shadow:0 0 12px rgba(223,90,44,.9)}

/* ---------- 7. 图片容器 ---------- */
.media{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-l);
  border:1px solid var(--rail-line);
  background:linear-gradient(140deg,var(--panel),var(--ink));
  isolation:isolate;
}
.media__img{width:100%;height:100%;object-fit:cover;display:block}
.media__frame{position:absolute;inset:0;pointer-events:none;box-shadow:inset 0 0 0 1px rgba(242,231,213,.06)}
.media__glyph{position:absolute;left:0;right:0;bottom:0;height:46%;background:linear-gradient(180deg,transparent,rgba(11,13,18,.88));pointer-events:none}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 16px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--gold-soft);
}
.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--21x9{aspect-ratio:21/9}
.media--slant{clip-path:polygon(0 5%,100% 0,100% 95%,0 100%)}
@media (max-width:719px){
  .media--slant{clip-path:none}
}

/* ---------- 8. 卡片、提示、指标 ---------- */
.card{
  position:relative;
  background:var(--panel);
  border:1px solid var(--rail-line);
  border-radius:var(--radius-m);
  padding:clamp(18px,2.4vw,28px);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(245,167,59,.4)}
.card__title{font-size:1.06rem;font-weight:800;line-height:1.4;letter-spacing:-.01em}
.card__meta{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.07em;color:var(--stone)}
.card__body{margin-top:10px;font-size:.95rem;color:rgba(242,231,213,.76);max-width:36em}
.note{
  border-left:3px solid var(--gold);
  background:rgba(245,167,59,.07);
  border-radius:0 var(--radius-s) var(--radius-s) 0;
  padding:14px 18px;
  font-size:.96rem;
  color:rgba(242,231,213,.86);
}
.note--cool{border-left-color:var(--ice);background:rgba(120,198,219,.08)}
.section--cream .note{color:var(--cream-ink);background:rgba(223,90,44,.09);border-left-color:var(--ember)}
.stat{position:relative;display:flex;flex-direction:column;gap:4px}
.stat__value{font-family:var(--font-mono);font-size:clamp(1.5rem,3vw,2.2rem);font-weight:600;letter-spacing:.02em;line-height:1.15;color:var(--gold)}
.stat__unit{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--stone)}
.stat__hint{
  position:absolute;left:0;bottom:calc(100% + 8px);z-index:3;
  white-space:nowrap;pointer-events:none;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;
  background:var(--gold-soft);color:#1A1206;
  padding:3px 8px;border-radius:6px;
  opacity:0;transform:translateY(4px);
  transition:opacity .16s var(--ease),transform .16s var(--ease);
}
.stat:hover .stat__hint,.stat:focus-within .stat__hint{opacity:1;transform:translateY(0)}

/* ---------- 9. 折叠文档 ---------- */
.doc-list{display:grid;gap:10px}
.doc{
  border:1px solid var(--rail-line);
  border-radius:var(--radius-m);
  background:rgba(23,27,36,.72);
  overflow:hidden;
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.doc[open]{border-color:rgba(245,167,59,.38);background:rgba(23,27,36,.96)}
.doc__summary{
  display:flex;align-items:baseline;gap:12px;
  padding:14px 18px;cursor:pointer;
  font-weight:700;font-size:1rem;color:var(--cream);
  list-style:none;
}
.doc__summary::-webkit-details-marker{display:none}
.doc__num{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--gold)}
.doc__body{padding:0 18px 18px;font-size:.96rem;color:rgba(242,231,213,.78)}
.doc__body p{max-width:38em}
.doc__body p+p{margin-top:.8em}

/* ---------- 10. 页内筛选 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.filter-btn{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  padding:7px 14px;border-radius:999px;cursor:pointer;
  background:rgba(220,235,240,.06);
  border:1px solid rgba(220,235,240,.28);
  color:var(--mist);
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.filter-btn:hover{border-color:var(--gold);color:var(--gold-soft)}
.filter-btn[aria-pressed="true"]{background:var(--gold);border-color:var(--gold);color:#1A1206}
.filter-count{margin-left:auto;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--stone)}
[data-filter-item]{transition:opacity .22s var(--ease),transform .22s var(--ease)}
[data-filter-item]:not(.is-filtered-out){animation:itemIn .22s var(--ease) both}
@keyframes itemIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.is-filtered-out{display:none !important}

/* ---------- 11. 面包屑 ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  list-style:none;margin:0;padding:0;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--stone);
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs__item+.breadcrumbs__item::before{content:"/";color:rgba(242,231,213,.28)}
.breadcrumbs a{color:var(--mist);text-decoration:none}
.breadcrumbs a:hover{color:var(--gold-soft)}
.breadcrumbs [aria-current="page"]{color:var(--stone)}

/* ---------- 12. 显现动画 ---------- */
[data-reveal].is-inview{animation:revealIn .55s var(--ease) both}
@keyframes revealIn{from{opacity:0;transform:translateX(24px)}to{opacity:1;transform:none}}

/* ---------- 13. 头部 ---------- */
.skip-link{
  position:absolute;left:var(--rail-x);top:-120px;z-index:200;
  background:var(--gold);color:#1A1206;
  padding:10px 16px;border-radius:0 0 10px 10px;
  font-size:14px;font-weight:700;text-decoration:none;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:0;color:#1A1206}

.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,13,18,.94);
  -webkit-backdrop-filter:saturate(140%) blur(12px);
  backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--rail-line);
  color:var(--cream);
}

.status-strip{
  display:flex;align-items:center;gap:10px;
  height:32px;
  padding-inline:clamp(14px,2.4vw,30px);
  border-bottom:1px solid var(--rail-line-soft);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;
  color:var(--stone);
}
.status-strip__pulse{
  flex:0 0 auto;width:7px;height:7px;border-radius:50%;
  background:var(--gold);
  box-shadow:0 0 0 0 rgba(245,167,59,.55);
  animation:pulseDot 2.4s var(--ease) infinite;
}
@keyframes pulseDot{
  0%{box-shadow:0 0 0 0 rgba(245,167,59,.55)}
  70%{box-shadow:0 0 0 9px rgba(245,167,59,0)}
  100%{box-shadow:0 0 0 0 rgba(245,167,59,0)}
}
.status-strip__rotator{position:relative;flex:1 1 auto;min-width:0;height:32px}
.status-strip__item{
  position:absolute;inset:0;display:flex;align-items:center;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  color:var(--gold-soft);
  opacity:0;transform:translateY(6px);
  transition:opacity .38s var(--ease),transform .38s var(--ease);
}
.status-strip__item.is-active{opacity:1;transform:translateY(0)}

.header-bar{position:relative}
.header-bar__inner{
  display:flex;align-items:center;
  gap:clamp(10px,1.6vw,24px);
  width:100%;max-width:var(--shell-max);
  margin-inline:auto;
  padding:10px clamp(14px,2.4vw,30px);
  min-height:62px;
}

.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;text-decoration:none;color:var(--cream)}
.brand__mark{
  flex:0 0 auto;display:grid;place-items:center;
  width:34px;height:34px;border-radius:10px;
  border:1px solid rgba(245,167,59,.5);
  background:linear-gradient(140deg,rgba(245,167,59,.18),rgba(120,198,219,.08));
  color:var(--gold);
}
.brand__mark svg{width:20px;height:20px}
.brand__text{display:block;min-width:0}
.brand__name{display:block;font-size:17px;font-weight:800;line-height:1.2;letter-spacing:.02em}
.brand__meta{display:block;font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--stone)}

.site-nav{
  position:absolute;left:0;right:0;top:100%;
  background:rgba(11,13,18,.985);
  border-top:1px solid var(--rail-line-soft);
  border-bottom:1px solid var(--rail-line);
  padding:6px clamp(14px,4vw,30px) 16px;
  max-height:min(74vh,540px);
  overflow:auto;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.site-header[data-open] .site-nav{opacity:1;visibility:visible;transform:translateY(0)}
.site-nav__list{list-style:none;display:flex;flex-direction:column}
.site-nav__item{border-bottom:1px solid rgba(242,231,213,.07)}
.site-nav__item:last-child{border-bottom:0}
.site-nav__link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 2px;
  color:var(--cream);text-decoration:none;font-size:16px;font-weight:500;
  transition:color .18s var(--ease);
}
.site-nav__link:hover{color:var(--gold-soft)}
.site-nav__index{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--ice)}
.site-nav__label{flex:1 1 auto}
.site-nav__link[aria-current="page"]{color:var(--gold)}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--gold)}

.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}
.header-actions__cta{display:none}

.nav-toggle{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 10px;border-radius:var(--radius-s);
  background:transparent;border:1px solid rgba(242,231,213,.28);color:var(--cream);
  font-size:12px;cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold-soft)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle__bars span{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.site-header[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars span:nth-child(2){opacity:0;transform:scaleX(.4)}
.site-header[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-toggle__label{font-family:var(--font-mono);letter-spacing:.08em}

.rail{position:relative;height:2px;background:var(--rail-line-soft)}
.rail--progress{overflow:hidden}
.rail__fill{
  position:absolute;left:0;top:0;bottom:0;width:0;
  background:linear-gradient(90deg,var(--gold),var(--ember));
  box-shadow:0 0 12px rgba(245,167,59,.65);
  transition:width .12s linear;
}

@media (min-width:1040px){
  .nav-toggle{display:none}
  .site-nav{
    position:static;flex:1 1 auto;margin-left:auto;
    background:none;border:0;padding:0;
    max-height:none;overflow:visible;
    opacity:1;visibility:visible;transform:none;
    transition:none;
  }
  .site-nav__list{flex-direction:row;flex-wrap:nowrap;align-items:center;gap:clamp(4px,1.1vw,18px)}
  .site-nav__item{border-bottom:0}
  .site-nav__link{
    justify-content:flex-start;
    align-items:baseline;
    gap:6px;
    padding:8px 6px;
    font-size:14.5px;
    border-bottom:2px solid transparent;
  }
  .site-nav__link:hover{border-bottom-color:rgba(245,167,59,.4)}
  .site-nav__link[aria-current="page"]{border-bottom-color:var(--gold)}
  .header-actions{margin-left:clamp(8px,1.4vw,20px)}
}
@media (min-width:1040px) and (max-width:1239px){
  .site-nav__index{display:none}
}
@media (min-width:1240px){
  .header-actions__cta{display:inline-flex}
}

/* ---------- 14. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,110px);
  background:linear-gradient(180deg,var(--ink) 0%,var(--panel-2) 100%);
  border-top:1px solid var(--rail-line);
  color:var(--cream);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--gold),var(--ember) 42%,var(--ice));
  opacity:.78;
}
.footer-frame{
  display:grid;
  gap:clamp(28px,4vw,52px);
  width:100%;max-width:var(--shell-max);
  margin-inline:auto;
  padding:clamp(38px,6vw,74px) clamp(16px,3vw,34px) clamp(24px,4vw,42px);
  grid-template-columns:minmax(0,1fr);
}
.footer-brand__name{font-size:1.18rem;font-weight:800;letter-spacing:.01em}
.footer-brand__meta{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--ice);margin-top:4px}
.footer-brand__line{margin-top:14px;font-size:.95rem;line-height:1.8;color:rgba(242,231,213,.6);max-width:30em}
.footer-nav{display:grid;gap:24px 28px;grid-template-columns:repeat(2,minmax(0,1fr))}
.footer-col__title{
  font-size:12px;font-weight:700;letter-spacing:.14em;
  font-family:var(--font-mono);text-transform:uppercase;
  color:var(--gold);
  padding-bottom:8px;margin-bottom:12px;
  border-bottom:1px solid var(--rail-line-soft);
}
.footer-col__list{list-style:none;display:grid;gap:10px}
.footer-link{color:rgba(242,231,213,.78);text-decoration:none;font-size:.94rem}
.footer-link:hover{color:var(--gold-soft);text-decoration:underline}
.footer-contact{grid-column:1/-1}
.footer-contact__list{list-style:none;display:grid;gap:12px}
.footer-contact__item{display:flex;flex-wrap:wrap;gap:4px 12px;align-items:baseline}
.footer-contact__label{
  flex:0 0 auto;min-width:66px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--stone);
}
.footer-contact__value{font-size:.94rem;color:rgba(242,231,213,.86);word-break:break-word}
.footer-base{
  display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
  width:100%;max-width:var(--shell-max);
  margin-inline:auto;
  padding:16px clamp(16px,3vw,34px) 22px;
  border-top:1px solid var(--rail-line-soft);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--stone);
}
.footer-legal{color:var(--stone)}
.footer-index{color:rgba(242,231,213,.5)}

@media (min-width:640px){
  .footer-nav{grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media (min-width:900px){
  .footer-frame{grid-template-columns:minmax(210px,1fr) minmax(0,2fr)}
}
@media (min-width:1120px){
  .footer-frame{grid-template-columns:minmax(220px,.9fr) minmax(0,2fr) minmax(250px,.95fr)}
  .footer-contact{grid-column:auto}
}

/* ---------- 15. 焦点与降低动效 ---------- */
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal].is-inview{animation:none}
  [data-filter-item]:not(.is-filtered-out){animation:none}
  .card:hover{transform:none}
  .btn--primary:hover{transform:none}
}