/* =========================================================
   乐虎国游戏站 · 共享外壳样式 /assets/site.css
   刊头 / 悬浮快捷条 / 页脚 / 通用排版与组件
   ========================================================= */

/* ---------- 0. 设计变量 ---------- */
:root{
  --c-ink-900:#0A0F1F;
  --c-ink-800:#141C36;
  --c-tiger:#F59A18;
  --c-tiger-lit:#FFC94D;
  --c-signal:#25E0B0;
  --c-wine:#7A1F3D;
  --c-teal:#0E3B41;
  --c-indigo:#3A2A6E;
  --c-paper:#F2F5FB;
  --c-mist:#9AA6BF;
  --c-line:#26314F;
  --c-amber:#D9822B;
  --c-on-tiger:#141C36;

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

  --shell:1240px;
  --gutter:clamp(16px,4vw,40px);
  --radius:2px;
  --t-fast:160ms;
  --t-base:240ms;
  --glow-tiger:0 0 0 1px rgba(245,154,24,.45), 0 14px 34px -18px rgba(245,154,24,.75);
}

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-ink-900);
  color:var(--c-paper);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
img,svg,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--c-signal);outline-offset:3px;border-radius:var(--radius)}
::selection{background:var(--c-tiger);color:var(--c-on-tiger)}

/* ---------- 2. 布局工具 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.shell--narrow{max-width:840px}
.stack{display:flex;flex-direction:column;gap:var(--stack-gap,16px)}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.rule{height:1px;border:0;background:linear-gradient(90deg,var(--c-tiger),rgba(38,49,79,.9) 32%,rgba(38,49,79,0))}
.skip-link{
  position:fixed;top:8px;left:8px;z-index:200;
  padding:10px 16px;border-radius:var(--radius);
  background:var(--c-tiger);color:var(--c-on-tiger);
  font-size:13px;font-weight:700;letter-spacing:.06em;
  transform:translateY(-200%);
  transition:transform var(--t-fast) ease;
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 3. 网格 ---------- */
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,28px)}
.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-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-9{grid-column:span 9}
.col-10{grid-column:span 10}
.col-12{grid-column:span 12}

/* ---------- 4. 刊头 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:var(--c-ink-900);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t-base) ease;
}
.site-header::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;pointer-events:none;
  background:repeating-linear-gradient(115deg,
    var(--c-tiger) 0 18px,
    var(--c-ink-900) 18px 30px,
    var(--c-tiger-lit) 30px 34px,
    var(--c-ink-900) 34px 54px);
  opacity:.85;
}
.site-header[data-scrolled]{box-shadow:0 18px 40px -30px rgba(0,0,0,.95)}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  transform:scaleX(var(--progress,0));transform-origin:0 50%;
  background:linear-gradient(90deg,var(--c-tiger),var(--c-signal));
  pointer-events:none;
}

/* 工具条 */
.header-utility{
  max-height:48px;overflow:hidden;
  border-bottom:1px solid var(--c-line);
  background:linear-gradient(90deg,rgba(20,28,54,.92),rgba(10,15,31,.5) 55%,rgba(58,42,110,.55));
  transition:max-height var(--t-base) ease,opacity var(--t-fast) ease;
}
.site-header[data-scrolled] .header-utility{max-height:0;opacity:0;border-bottom-color:transparent}
.header-utility__inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:44px;padding-block:0;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--c-mist);
}
.utility-group{display:flex;align-items:center;gap:22px}
.utility-item{white-space:nowrap}
.utility-item--search{color:var(--c-tiger-lit)}
.utility-item--search::before{content:"▍";margin-right:6px;color:var(--c-tiger)}
.utility-item--hours{color:var(--c-signal)}

/* 报头 */
.masthead{background:linear-gradient(90deg,rgba(122,31,61,.16),rgba(10,15,31,0) 38%,rgba(14,59,65,.2))}
.masthead__inner{
  position:relative;display:flex;align-items:center;justify-content:center;
  padding-block:clamp(14px,2.4vw,28px);
  transition:padding var(--t-base) ease;
}
.site-header[data-scrolled] .masthead__inner{padding-block:8px}
.masthead__brand{display:flex;align-items:center;gap:14px}
.brand-mark{
  display:grid;place-items:center;flex:0 0 auto;
  width:clamp(38px,5vw,54px);aspect-ratio:1;
  border-radius:var(--radius);
  background:var(--c-tiger);color:var(--c-on-tiger);
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(20px,2.4vw,27px);line-height:1;
  transform:skewX(-6deg);
  box-shadow:var(--glow-tiger);
  transition:width var(--t-base) ease,font-size var(--t-base) ease;
}
.site-header[data-scrolled] .brand-mark{width:34px;font-size:19px}
.brand-text{display:flex;flex-direction:column;gap:0}
.brand-text__name{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(22px,3.4vw,40px);line-height:1.06;letter-spacing:-.02em;
  transform:skewX(-3deg);
  transition:font-size var(--t-base) ease;
}
.site-header[data-scrolled] .brand-text__name{font-size:clamp(19px,2.2vw,24px)}
.brand-text__line{
  display:block;overflow:hidden;max-height:22px;
  font-family:var(--font-mono);font-size:clamp(11px,1.1vw,12px);
  letter-spacing:.12em;color:var(--c-mist);
  transition:max-height var(--t-base) ease,opacity var(--t-fast) ease;
}
.site-header[data-scrolled] .brand-text__line{max-height:0;opacity:0}

/* 汉堡按钮 */
.nav-toggle{
  position:absolute;right:var(--gutter);top:50%;transform:translateY(-50%);
  display:none;align-items:center;gap:9px;
  padding:9px 13px;border:1px solid var(--c-line);border-radius:var(--radius);
  background:var(--c-ink-800);color:var(--c-paper);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  transition:border-color var(--t-fast) ease,background var(--t-fast) ease;
}
.nav-toggle:hover{border-color:var(--c-tiger);background:#1B2545}
.nav-toggle__bars{position:relative;display:block;width:16px;height:10px}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:100%;height:2px;background:var(--c-tiger);
  transition:transform var(--t-fast) ease,top var(--t-fast) ease,bottom var(--t-fast) ease;
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{bottom:0}
.nav-toggle[data-open]{border-color:var(--c-tiger)}
.nav-toggle[data-open] .nav-toggle__bars::before{top:4px;transform:rotate(45deg)}
.nav-toggle[data-open] .nav-toggle__bars::after{bottom:4px;transform:rotate(-45deg)}
.nav-toggle__label{white-space:nowrap}

/* 栏目行 */
.site-nav{background:var(--c-ink-900);border-top:1px solid var(--c-line)}
.site-nav__inner{
  position:relative;display:flex;align-items:center;justify-content:center;
  min-height:54px;
}
.nav-list{
  display:flex;align-items:center;gap:2px;
  overflow-x:auto;scroll-snap-type:x proximity;
  scrollbar-width:none;-ms-overflow-style:none;
}
.nav-list::-webkit-scrollbar{display:none}
.nav-list__item{flex:0 0 auto;scroll-snap-align:start}
.nav-link{
  display:inline-block;padding:15px 15px;
  font-size:15px;font-weight:500;letter-spacing:.04em;color:var(--c-mist);
  white-space:nowrap;border-bottom:2px solid transparent;
  transition:color var(--t-fast) ease,background var(--t-fast) ease,border-color var(--t-fast) ease;
}
.nav-link:hover{color:var(--c-tiger-lit);background:rgba(245,154,24,.08)}
.nav-link[aria-current="page"]{color:var(--c-tiger-lit);border-bottom-color:var(--c-tiger)}

.nav-cta{
  position:absolute;right:var(--gutter);top:50%;transform:translateY(-50%);
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:var(--radius);
  background:var(--c-tiger);color:var(--c-on-tiger);
  font-size:14px;font-weight:700;letter-spacing:.04em;white-space:nowrap;
  transition:background var(--t-fast) ease,box-shadow var(--t-fast) ease;
}
.nav-cta::after{content:"→";font-family:var(--font-mono)}
.nav-cta:hover{background:var(--c-tiger-lit);box-shadow:var(--glow-tiger)}

/* 悬浮快捷条 */
.quick-bar{
  position:fixed;right:clamp(12px,2vw,24px);bottom:clamp(12px,2vw,24px);z-index:120;
  display:flex;flex-direction:column;gap:1px;
  max-width:min(64vw,220px);
  background:var(--c-line);border:1px solid var(--c-line);border-radius:var(--radius);
  overflow:hidden;
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity var(--t-base) ease,transform var(--t-base) ease;
}
.quick-bar[data-visible]{opacity:1;transform:none;pointer-events:auto}
.quick-bar__btn,.quick-bar__link{
  display:flex;align-items:center;gap:9px;
  padding:11px 13px;text-align:left;
  background:rgba(20,28,54,.95);color:var(--c-paper);
  font-size:13px;font-weight:500;letter-spacing:.03em;
  transition:background var(--t-fast) ease,color var(--t-fast) ease;
}
.quick-bar__key{font-family:var(--font-mono);font-size:12px;color:var(--c-tiger);transition:color var(--t-fast) ease}
.quick-bar__label{white-space:nowrap}
.quick-bar__btn:hover,.quick-bar__link:hover{background:var(--c-tiger);color:var(--c-on-tiger)}
.quick-bar__btn:hover .quick-bar__key,.quick-bar__link:hover .quick-bar__key{color:var(--c-on-tiger)}
.quick-bar__btn[data-state="done"]{background:var(--c-signal);color:#062018}
.quick-bar__btn[data-state="done"] .quick-bar__key{color:#062018}
.quick-bar__btn[data-state="empty"]{background:var(--c-amber);color:#1B0F02}
.quick-bar__btn[data-state="empty"] .quick-bar__key{color:#1B0F02}

/* ---------- 5. 页脚 ---------- */
.site-footer{
  position:relative;
  background:linear-gradient(180deg,var(--c-ink-900),#070B16);
  border-top:1px solid var(--c-line);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:2px;
  background:linear-gradient(90deg,var(--c-wine),var(--c-indigo) 48%,var(--c-teal) 100%);
}
.footer-grid{
  display:grid;gap:clamp(24px,3vw,48px);
  grid-template-columns:minmax(230px,1.5fr) repeat(3,minmax(110px,1fr)) minmax(220px,1.4fr);
  padding-block:clamp(36px,5vw,66px);
}
.footer-brand__mark{
  display:inline-block;
  font-family:var(--font-display);font-weight:800;font-size:24px;
  letter-spacing:-.02em;transform:skewX(-3deg);color:var(--c-paper);
  transition:color var(--t-fast) ease;
}
.footer-brand__mark:hover{color:var(--c-tiger-lit)}
.footer-brand__line{
  margin-top:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--c-tiger);
}
.footer-brand__meta{margin-top:12px;max-width:34ch;font-size:14px;color:var(--c-mist)}
.footer-col__title{
  position:relative;margin-bottom:14px;padding-bottom:10px;
  font-size:13px;font-weight:500;letter-spacing:.16em;color:var(--c-mist);
  border-bottom:1px solid var(--c-line);
}
.footer-col__title::after{content:"";position:absolute;left:0;bottom:-1px;width:28px;height:1px;background:var(--c-tiger)}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-link{
  display:inline-block;font-size:15px;color:var(--c-paper);opacity:.86;
  transition:color var(--t-fast) ease,padding-left var(--t-fast) ease,opacity var(--t-fast) ease;
}
.footer-link:hover{color:var(--c-tiger-lit);opacity:1;padding-left:6px}
.contact-list{display:flex;flex-direction:column;gap:10px}
.contact-list__item{display:flex;gap:10px;font-size:14px;line-height:1.6}
.contact-list__key{
  flex:0 0 40px;padding-top:3px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--c-tiger);
}
.contact-list__val{color:var(--c-paper);word-break:break-word}
.footer-base{border-top:1px solid var(--c-line);background:rgba(6,10,21,.9)}
.footer-base__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 26px;
  padding-block:18px;font-size:12.5px;color:var(--c-mist);
}
.footer-legal,.footer-copy{font-family:var(--font-mono);letter-spacing:.06em;white-space:nowrap}
.footer-note{flex:1 1 300px;min-width:200px}

/* ---------- 6. 通用组件 ---------- */
.section{position:relative;padding-block:clamp(56px,8vw,110px)}
.section--ink{background:var(--c-ink-900)}
.section--panel{background:var(--c-ink-800)}
.section--wine{background:var(--c-wine);background-image:linear-gradient(160deg,rgba(10,15,31,.6),rgba(10,15,31,0) 62%)}
.section--teal{background:var(--c-teal);background-image:linear-gradient(200deg,rgba(10,15,31,.62),rgba(10,15,31,0) 60%)}
.section--indigo{background:var(--c-indigo);background-image:linear-gradient(140deg,rgba(10,15,31,.55),rgba(10,15,31,0) 58%)}
.section--edge{border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section--stripe::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.07;
  background:repeating-linear-gradient(118deg,var(--c-tiger) 0 12px,transparent 12px 46px);
}
.section__head{max-width:820px}
.section__kicker{
  display:inline-flex;align-items:center;gap:10px;margin-bottom:14px;
  font-family:var(--font-mono);font-size:12px;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--c-tiger);
}
.section__kicker::before{content:"";width:24px;height:1px;background:currentColor}
.section__title{
  position:relative;padding-bottom:18px;
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(28px,3.2vw,44px);line-height:1.22;letter-spacing:-.02em;
}
.section__title::after{
  content:"";position:absolute;left:0;bottom:0;
  width:20%;max-width:120px;height:1px;background:var(--c-tiger);
}
.section__lede{margin-top:16px;max-width:62ch;color:var(--c-mist);font-size:clamp(16px,1.4vw,18px)}

.panel{
  position:relative;display:flex;flex-direction:column;gap:12px;
  padding:clamp(20px,2.4vw,30px);
  background:var(--c-ink-800);
  border:1px solid var(--c-line);border-radius:var(--radius);
  transition:border-color var(--t-fast) ease,background var(--t-fast) ease,transform var(--t-base) ease;
}
.panel::before{content:"";position:absolute;left:-1px;top:-1px;width:38px;height:1px;background:var(--c-tiger)}
.panel:hover{border-color:rgba(245,154,24,.55);background:#18213D;transform:translateY(-3px)}
.panel--quiet{background:transparent}
.panel--quiet:hover{background:rgba(20,28,54,.6)}
.panel__label{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--c-signal)}
.panel__title{font-family:var(--font-display);font-weight:700;font-size:clamp(19px,1.8vw,24px);line-height:1.35}
.panel__body{font-size:15px;color:var(--c-mist)}
.panel__foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--c-mist);
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border:1px solid var(--c-line);border-radius:var(--radius);
  background:var(--c-ink-800);color:var(--c-paper);
  font-size:15px;font-weight:700;letter-spacing:.03em;text-align:center;
  transition:background var(--t-fast) ease,color var(--t-fast) ease,border-color var(--t-fast) ease,box-shadow var(--t-fast) ease;
}
.btn:hover{border-color:var(--c-tiger);color:var(--c-tiger-lit)}
.btn--primary{background:var(--c-tiger);border-color:var(--c-tiger);color:var(--c-on-tiger)}
.btn--primary:hover{background:var(--c-tiger-lit);border-color:var(--c-tiger-lit);color:var(--c-on-tiger);box-shadow:var(--glow-tiger)}
.btn--signal{background:transparent;border-color:var(--c-signal);color:var(--c-signal)}
.btn--signal:hover{background:var(--c-signal);color:#062018}
.btn--ghost{background:transparent}
.btn--block{width:100%}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;border:1px solid var(--c-line);border-radius:var(--radius);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--c-mist);
}
.tag--gold{border-color:rgba(245,154,24,.55);background:rgba(245,154,24,.1);color:var(--c-tiger-lit)}
.tag--signal{border-color:rgba(37,224,176,.5);background:rgba(37,224,176,.1);color:var(--c-signal)}
.tag--wine{border-color:rgba(122,31,61,.85);background:rgba(122,31,61,.42);color:#F3C3D3}

.stat__value{
  font-family:var(--font-mono);font-weight:600;
  font-size:clamp(30px,4vw,52px);line-height:1;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;color:var(--c-tiger-lit);
}
.stat__label{margin-top:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--c-mist)}
.stat__note{margin-top:6px;font-size:13.5px;color:var(--c-mist)}

.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-block:14px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--c-mist);
}
.crumbs__item{color:var(--c-mist)}
.crumbs__item a:hover{color:var(--c-tiger-lit)}
.crumbs__item[aria-current="page"]{color:var(--c-paper)}
.crumbs__sep{color:var(--c-line)}

.prose{max-width:68ch;font-size:17px;line-height:1.75;color:#DCE3F2}
.prose>*+*{margin-top:1.1em}
.prose h2{
  margin-top:2em;font-family:var(--font-display);font-weight:700;
  font-size:clamp(22px,2vw,28px);color:var(--c-paper);
}
.prose h3{margin-top:1.6em;font-family:var(--font-display);font-weight:700;font-size:19px;color:var(--c-paper)}
.prose ul{display:flex;flex-direction:column;gap:8px}
.prose ul li{position:relative;padding-left:18px}
.prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:1px;background:var(--c-tiger)}
.prose strong{color:var(--c-paper)}
.prose a{color:var(--c-signal);border-bottom:1px solid rgba(37,224,176,.4)}
.prose a:hover{color:var(--c-tiger-lit);border-bottom-color:var(--c-tiger-lit)}

.lede{max-width:60ch;font-size:clamp(17px,1.6vw,20px);line-height:1.7;color:#CBD4E8}
.caption{font-size:13px;font-weight:500;letter-spacing:.06em;color:var(--c-mist)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

.note-rail{display:flex;flex-direction:column;gap:18px;padding-left:18px;border-left:1px solid var(--c-line)}
.note-rail__item{font-size:13.5px;line-height:1.7;color:var(--c-mist)}
.note-rail__item strong{display:block;margin-bottom:4px;font-size:14px;color:var(--c-paper)}

/* ---------- 7. 图片容器基础规则 ---------- */
.media-frame{
  position:relative;overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--c-line);border-radius:var(--radius);
  background-color:#111834;
  background-image:
    repeating-linear-gradient(118deg,rgba(245,154,24,.14) 0 10px,transparent 10px 40px),
    linear-gradient(160deg,rgba(58,42,110,.65),rgba(14,59,65,.45));
}
.media-frame>img,.media-frame>picture>img{width:100%;height:100%;object-fit:cover}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 14px;
  font-size:13px;letter-spacing:.06em;color:var(--c-paper);
  background:linear-gradient(180deg,rgba(10,15,31,0),rgba(10,15,31,.92));
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--portrait{aspect-ratio:3/4}
.media-frame--slot{
  display:grid;place-items:center;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--c-mist);
}

/* ---------- 8. 滚动显现 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity var(--t-base) ease,transform var(--t-base) cubic-bezier(.2,.7,.3,1);
  transition-delay:var(--reveal-delay,0ms);
}
[data-reveal][data-revealed]{opacity:1;transform:none}

/* ---------- 9. 响应式 ---------- */
@media (max-width:1100px){
  .footer-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-brand{grid-column:1/-1}
  .footer-contact{grid-column:span 3}
}
@media (max-width:1000px){
  .col-3,.col-4,.col-5{grid-column:span 6}
  .col-7,.col-8,.col-9,.col-10{grid-column:span 12}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .masthead__inner{justify-content:flex-start;padding-right:96px}
  .nav-cta{position:static;transform:none;margin:14px var(--gutter) 0;justify-content:center}
  .site-nav{
    max-height:0;overflow:hidden;visibility:hidden;border-top:0;
    transition:max-height var(--t-base) ease,visibility 0s linear var(--t-base);
  }
  .site-nav[data-open]{
    max-height:640px;visibility:visible;border-top:1px solid var(--c-line);
    transition:max-height var(--t-base) ease,visibility 0s;
  }
  .site-nav__inner{flex-direction:column;align-items:stretch;justify-content:flex-start;min-height:0;padding-block:6px 18px}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;overflow:visible;scroll-snap-type:none}
  .nav-list__item{border-bottom:1px solid var(--c-line)}
  .nav-link{
    display:block;padding:14px 12px;font-size:16px;
    border-bottom:0;border-left:2px solid transparent;
  }
  .nav-link[aria-current="page"]{border-bottom:0;border-left-color:var(--c-tiger);background:rgba(245,154,24,.08)}
}
@media (max-width:760px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1/-1}
  .footer-contact{grid-column:1/-1}
  .header-utility__inner{justify-content:flex-start;overflow-x:auto;scrollbar-width:none}
  .header-utility__inner::-webkit-scrollbar{display:none}
}
@media (max-width:640px){
  body{padding-bottom:0}
  .site-footer{padding-bottom:68px}
  .brand-text__name{font-size:20px}
  .brand-text__line{display:none}
  .masthead__inner{padding-right:84px}
  .nav-toggle{padding:8px 11px}
  .col-3,.col-4,.col-5,.col-6{grid-column:span 12}
  .quick-bar{
    left:12px;right:12px;bottom:12px;max-width:none;
    flex-direction:row;overflow-x:auto;scrollbar-width:none;
  }
  .quick-bar::-webkit-scrollbar{display:none}
  .quick-bar__btn,.quick-bar__link{flex:0 0 auto;padding:11px 12px;font-size:12px}
  .quick-bar__key{display:none}
  .footer-base__inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  .footer-grid{grid-template-columns:1fr}
}

/* ---------- 10. 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    transition-delay:0ms!important;
  }
  [data-reveal]{opacity:1!important;transform:none!important}
  .quick-bar{transform:none}
}