/* ===== 走兽飞禽 · 共享样式 /assets/site.css ===== */

/* ---------- 1. reset ---------- */
*,*::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,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
img,svg{max-width:100%;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
a{color:inherit;}
table{border-collapse:collapse;}
summary{cursor:pointer;}

/* ---------- 2. tokens ---------- */
:root{
  --ink:#070B18;
  --ink-2:#101A33;
  --ink-3:#0A1022;
  --amber:#F5A623;
  --amber-soft:#FFD98A;
  --peacock:#1FB6C1;
  --peacock-deep:#0E5F6B;
  --magenta:#FF3D8B;
  --mint:#4EE39A;
  --ivory:#E8ECF5;
  --mist:#9AA6C4;
  --line-gold:#8A5A12;
  --line:rgba(154,166,196,.22);
  --line-soft:rgba(154,166,196,.12);
  --shell:1200px;
  --gutter:clamp(16px,4vw,32px);
  --gap:clamp(16px,2.4vw,32px);
  --font-display:"Archivo Black","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC",system-ui,-apple-system,"Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* ---------- 3. 中文排版与底色 ---------- */
body{
  min-height:100vh;
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(154,166,196,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(154,166,196,.045) 1px,transparent 1px);
  background-size:72px 72px;
  color:var(--ivory);
  font-family:var(--font-body);
  font-size:16.5px;
  line-height:1.75;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.14;letter-spacing:-.01em;color:var(--ivory);}
p{max-width:44rem;}
strong{color:var(--amber-soft);font-weight:700;}
::selection{background:var(--amber);color:#0A1022;}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;}

.h-hero{font-size:clamp(36px,6.4vw,72px);}
.h-section{font-size:clamp(26px,3.6vw,40px);}
.h-sub{font-size:clamp(19px,2vw,24px);}
.lede{font-size:clamp(16.5px,1.7vw,20px);line-height:1.72;color:var(--mist);max-width:40rem;}
.prose{max-width:36rem;font-size:16.5px;}
.prose--wide{max-width:54rem;}
.mono{font-family:var(--font-mono);letter-spacing:.08em;font-variant-numeric:tabular-nums;}
.eyebrow{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.26em;
  text-transform:uppercase;color:var(--peacock);margin:0;
}
.rule{height:1px;border:0;background:linear-gradient(90deg,var(--line-gold),rgba(138,90,18,0));margin:clamp(24px,4vw,44px) 0;}

/* ---------- 4. 容器 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter);}
.section{position:relative;padding:clamp(40px,6vw,88px) 0;}
.section--flush{padding-top:0;}
.section--band{background:var(--ink-2);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
.section--beast{background:linear-gradient(135deg,rgba(245,166,35,.16),rgba(7,11,24,0) 62%);}
.section--bird{background:linear-gradient(215deg,rgba(31,182,193,.18),rgba(7,11,24,0) 60%);}
.section--night{background:linear-gradient(120deg,rgba(255,61,139,.13),rgba(78,227,154,.08) 72%,rgba(7,11,24,0));}
.section__head{display:grid;gap:10px;max-width:54rem;margin-bottom:clamp(20px,3vw,36px);}
.section__title{font-size:clamp(26px,3.6vw,40px);}

/* ---------- 5. 栅格 ---------- */
.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gap);}
.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-12{grid-column:span 12;}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.72em 1.3em;border:1px solid var(--amber);background:transparent;color:var(--ivory);
  font-family:var(--font-display);font-size:15px;letter-spacing:.03em;text-decoration:none;
  transition:background-color .12s linear,color .12s linear,border-color .12s linear;
}
.btn:hover{background:var(--amber);color:#150E02;}
.btn--amber{background:var(--amber);color:#150E02;}
.btn--amber:hover{background:var(--amber-soft);border-color:var(--amber-soft);color:#150E02;}
.btn--peacock{border-color:var(--peacock);color:var(--peacock);}
.btn--peacock:hover{background:var(--peacock);color:#04222A;}
.btn--ghost{border-color:rgba(232,236,245,.3);color:var(--ivory);}
.btn--ghost:hover{background:transparent;border-color:var(--amber);color:var(--amber);}
.btn--sm{padding:.5em .9em;font-size:13px;}
.btn--block{display:flex;width:100%;}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:clamp(18px,2.4vw,28px);}

/* ---------- 7. 头部 ---------- */
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--amber);color:#0A1022;padding:10px 16px;
  font-family:var(--font-mono);font-size:13px;text-decoration:none;
}
.skip-link:focus{left:12px;top:12px;}

.site-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg,rgba(7,11,24,.97),rgba(7,11,24,.9));
  border-bottom:1px solid rgba(138,90,18,.5);
  transition:background-color .18s linear,box-shadow .18s linear;
}
.site-header[data-scrolled="true"]{background:#070B18;box-shadow:0 10px 26px rgba(0,0,0,.5);}
.site-header__bar{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;
  padding:14px 0 10px;transition:padding .18s linear;
}
.site-header[data-scrolled="true"] .site-header__bar{padding:7px 0;}
.site-header__side{display:flex;align-items:center;gap:14px;min-width:0;}
.site-header__side--end{justify-content:flex-end;}

.brand-mark{display:grid;justify-items:center;text-align:center;text-decoration:none;padding:0 6px;}
.brand-mark__name{
  font-family:var(--font-display);font-size:clamp(20px,2.4vw,28px);
  letter-spacing:.1em;line-height:1;color:var(--ivory);
  transition:color .12s linear;
}
.brand-mark__meta{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.24em;
  color:var(--amber);margin-top:6px;text-transform:uppercase;
}
.brand-mark:hover .brand-mark__name{color:var(--amber-soft);}
.brand-mark:hover .brand-mark__meta{color:var(--peacock);}

.header-kicker{
  font-size:12px;letter-spacing:.2em;color:var(--mist);
  text-transform:uppercase;margin:0;max-width:none;
}
.status-lamp{
  display:inline-flex;align-items:center;gap:8px;margin:0;max-width:none;
  padding:5px 10px;border:1px solid rgba(78,227,154,.35);color:var(--mint);
  font-size:12px;white-space:nowrap;
}
.status-lamp__dot{
  width:7px;height:7px;background:var(--mint);display:block;
  box-shadow:0 0 10px rgba(78,227,154,.85);
  animation:lamp-pulse 3s ease-in-out infinite;
}
@keyframes lamp-pulse{0%,100%{opacity:.7;}50%{opacity:1;}}
.status-lamp__text{font-size:12px;}

.nav-toggle{display:none;align-items:center;gap:9px;padding:8px 10px;border:1px solid var(--line);color:var(--ivory);}
.nav-toggle:hover{border-color:var(--amber);color:var(--amber);}
.nav-toggle__icon{display:grid;gap:3px;}
.nav-toggle__line{display:block;width:16px;height:1px;background:currentColor;}
.nav-toggle__label{font-size:12px;letter-spacing:.16em;}

.site-nav{border-top:1px solid rgba(138,90,18,.3);}
.site-nav__list{display:flex;flex-wrap:wrap;justify-content:center;gap:clamp(10px,2.6vw,34px);}
.site-nav__link{
  display:block;padding:12px 3px;color:var(--mist);text-decoration:none;
  font-size:15px;letter-spacing:.05em;border-bottom:2px solid transparent;
  transition:color .12s linear,border-color .12s linear,background-color .12s linear;
}
.site-nav__link:hover{color:var(--ivory);border-bottom-color:var(--peacock);}
.site-nav__link[aria-current="page"]{color:var(--amber);border-bottom-color:var(--amber);}

.tabbar{display:none;}
.tabbar__list{display:grid;grid-template-columns:repeat(5,1fr);}
.tabbar__link{
  display:block;padding:10px 2px 12px;text-align:center;text-decoration:none;
  color:var(--mist);font-size:12.5px;letter-spacing:.06em;
  border-top:2px solid transparent;
  transition:color .12s linear,background-color .12s linear,border-color .12s linear;
}
.tabbar__link:hover{color:var(--ivory);background:rgba(31,182,193,.12);}
.tabbar__link[aria-current="page"]{color:var(--amber);border-top-color:var(--amber);}

.scroll-progress{
  position:absolute;left:0;bottom:-1px;height:2px;width:0;display:block;
  background:linear-gradient(90deg,var(--amber),var(--peacock) 58%,var(--magenta));
}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  margin-top:clamp(48px,7vw,96px);
  background:linear-gradient(180deg,var(--ink-3),var(--ink));
  border-top:1px solid rgba(138,90,18,.55);
  color:var(--mist);
  padding-top:clamp(32px,5vw,64px);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr repeat(3,1fr);
  gap:var(--gap);padding-bottom:clamp(24px,4vw,44px);
}
.footer-brand__mark{
  font-family:var(--font-display);font-size:22px;letter-spacing:.08em;
  color:var(--ivory);margin:0 0 12px;
}
.footer-brand__mark .mono{font-size:12px;color:var(--amber);letter-spacing:.2em;}
.footer-brand__note{font-size:14px;line-height:1.75;margin:0 0 10px;max-width:34rem;}
.footer-brand__note--dim{font-family:var(--font-mono);font-size:12.5px;color:rgba(154,166,196,.72);}
.footer-col__title{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--amber);margin:0 0 14px;
}
.footer-list{display:grid;gap:9px;}
.footer-link{
  color:var(--ivory);text-decoration:none;font-size:14.5px;
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:color .12s linear,border-color .12s linear;
}
.footer-link:hover{color:var(--peacock);border-bottom-color:var(--peacock);}
.footer-contact{display:grid;gap:6px;border-top:1px solid var(--line);padding:18px 0;}
.footer-contact__line{font-family:var(--font-mono);font-size:12.5px;color:var(--ivory);margin:0;max-width:none;line-height:1.8;}
.footer-contact__hours{font-size:13.5px;margin:0;max-width:52rem;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
  border-top:1px solid rgba(138,90,18,.35);padding:14px 0 22px;
}
.footer-legal{font-family:var(--font-mono);font-size:12.5px;color:var(--mist);margin:0;max-width:none;}
.footer-legal--dim{color:rgba(154,166,196,.7);}

/* ---------- 9. 面包屑与链接 ---------- */
.breadcrumbs{padding-top:16px;}
.breadcrumbs__list{display:flex;flex-wrap:wrap;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;}
.breadcrumbs__item{color:var(--mist);}
.breadcrumbs__item + .breadcrumbs__item::before{content:"/";margin-right:8px;color:rgba(154,166,196,.5);}
.breadcrumbs__item[aria-current="page"]{color:var(--ivory);}
.breadcrumbs__link{color:var(--peacock);text-decoration:none;transition:color .12s linear;}
.breadcrumbs__link:hover{color:var(--amber);}
.link-arrow{
  display:inline-block;color:var(--peacock);text-decoration:none;font-size:15px;
  border-bottom:1px solid rgba(31,182,193,.5);padding-bottom:2px;
  transition:color .12s linear,border-color .12s linear;
}
.link-arrow::after{content:" →";}
.link-arrow:hover{color:var(--amber);border-bottom-color:var(--amber);}

/* ---------- 10. 面板 / 标签 / 数据 ---------- */
.panel{background:var(--ink-2);border:1px solid var(--line);padding:clamp(18px,2.4vw,28px);}
.panel--beast{
  border-color:rgba(245,166,35,.42);
  background:linear-gradient(160deg,rgba(245,166,35,.12),var(--ink-2) 58%);
}
.panel--bird{
  border-color:rgba(31,182,193,.42);
  background:linear-gradient(200deg,rgba(31,182,193,.14),var(--ink-2) 58%);
}
.tag{
  display:inline-block;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;
  padding:3px 8px;border:1px solid currentColor;text-transform:uppercase;
}
.tag--amber{color:var(--amber);}
.tag--peacock{color:var(--peacock);}
.tag--magenta{color:var(--magenta);}
.tag--mint{color:var(--mint);}
.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);}
.stat{background:var(--ink-2);padding:16px 18px;}
.stat__value{font-family:var(--font-mono);font-size:clamp(22px,3vw,30px);color:var(--amber);margin:0 0 4px;line-height:1.2;}
.stat__label{font-size:13px;color:var(--mist);margin:0;}

/* ---------- 11. 目录型表格 ---------- */
.ledger{width:100%;font-size:15px;}
.ledger th{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--peacock);text-align:left;padding:10px 12px;
  border-bottom:1px solid rgba(31,182,193,.35);
}
.ledger td{padding:12px;border-bottom:1px solid var(--line-soft);color:var(--ivory);vertical-align:top;}
.ledger tbody tr{transition:background-color .12s linear;}
.ledger tbody tr:hover{background:rgba(245,166,35,.1);}
.ledger a{color:var(--peacock);text-decoration:none;}
.ledger a:hover{color:var(--amber);}

/* ---------- 12. 折叠 ---------- */
.fold{border:1px solid var(--line);background:rgba(16,26,51,.72);}
.fold + .fold{margin-top:-1px;}
.fold__summary{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 18px;font-family:var(--font-display);font-size:16px;list-style:none;
  transition:color .12s linear,background-color .12s linear;
}
.fold__summary::-webkit-details-marker{display:none;}
.fold__summary::after{content:"+";font-family:var(--font-mono);color:var(--amber);}
.fold__summary:hover{color:var(--amber-soft);}
.fold[open] .fold__summary{color:var(--amber);border-bottom:1px solid rgba(138,90,18,.45);}
.fold[open] .fold__summary::after{content:"–";}
.fold__body{padding:14px 18px 18px;font-size:15px;color:var(--mist);}
.fold__body p + p{margin-top:10px;}

/* ---------- 13. 横滑卡槽 ---------- */
.rail{position:relative;}
.rail__track{
  display:flex;gap:var(--gap);overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 18px;scrollbar-width:thin;scrollbar-color:var(--amber) transparent;
  -webkit-overflow-scrolling:touch;
}
.rail__item{flex:0 0 min(330px,82%);scroll-snap-align:start;}
.rail__controls{display:flex;align-items:center;justify-content:flex-end;gap:10px;margin-top:10px;}
.rail__btn{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;padding:8px 12px;
  border:1px solid rgba(232,236,245,.3);color:var(--ivory);background:transparent;
  transition:border-color .12s linear,color .12s linear,background-color .12s linear;
}
.rail__btn:hover{border-color:var(--amber);color:var(--amber);}
.rail__hint{font-family:var(--font-mono);font-size:12px;color:var(--mist);margin:0;max-width:none;margin-right:auto;}

/* ---------- 14. 图像容器（页面阶段放置占位） ---------- */
.media-frame{
  position:relative;overflow:hidden;border:1px solid var(--line);
  background:linear-gradient(140deg,var(--ink-2) 0%,var(--ink-3) 55%,rgba(31,182,193,.2) 100%);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(180deg,rgba(232,236,245,.055) 0 1px,transparent 1px 4px);
}
.media-frame__img,.media-frame img{display:block;width:100%;height:100%;object-fit:cover;}
.media-frame__slot{
  display:grid;place-items:center;width:100%;height:100%;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;
  color:rgba(154,166,196,.65);text-align:center;padding:16px;
}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;padding:10px 14px;
  font-family:var(--font-mono);font-size:12px;color:var(--ivory);
  background:linear-gradient(180deg,rgba(7,11,24,0),rgba(7,11,24,.88));
}
.media-frame--16x9{aspect-ratio:16/9;}
.media-frame--4x3{aspect-ratio:4/3;}
.media-frame--1x1{aspect-ratio:1/1;}
.media-frame--3x4{aspect-ratio:3/4;}

/* ---------- 15. 装饰 ---------- */
.scanlines{position:relative;}
.scanlines::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(180deg,rgba(232,236,245,.055) 0 1px,transparent 1px 4px);
}

/* ---------- 16. 显现 ---------- */
[data-js="on"] [data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .45s ease,transform .45s ease;}
[data-js="on"] [data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 17. 响应式 ---------- */
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:880px){
  .nav-toggle{display:inline-flex;}
  .header-kicker{display:none;}
  .status-lamp__text{display:none;}
  .site-nav{
    display:none;position:absolute;top:100%;left:0;right:0;z-index:85;
    background:var(--ink-3);border-top:1px solid rgba(138,90,18,.45);
    border-bottom:1px solid rgba(138,90,18,.45);
    max-height:calc(100vh - 62px);overflow-y:auto;
  }
  .site-header[data-open="true"] .site-nav{display:block;}
  .site-nav__list{flex-direction:column;flex-wrap:nowrap;gap:0;}
  .site-nav__link{
    padding:14px 20px;font-size:17px;border-bottom:1px solid var(--line-soft);
    border-left:3px solid transparent;
  }
  .site-nav__link:hover{border-bottom-color:var(--line-soft);border-left-color:var(--peacock);background:rgba(31,182,193,.1);}
  .site-nav__link[aria-current="page"]{
    border-bottom-color:var(--line-soft);border-left-color:var(--amber);
    background:rgba(245,166,35,.12);
  }
  .tabbar{
    display:block;position:fixed;left:0;right:0;bottom:0;z-index:90;
    background:rgba(7,11,24,.97);border-top:1px solid rgba(138,90,18,.5);
    padding-bottom:env(safe-area-inset-bottom,0px);
  }
  body{padding-bottom:76px;}
  .col-4,.col-5,.col-6,.col-7,.col-8{grid-column:span 12;}
  .rail__item{flex:0 0 min(300px,86%);}
}
@media (max-width:620px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-brand__note{max-width:none;}
  .footer-bottom{justify-content:flex-start;}
  .site-header__bar{gap:8px;}
  .btn--sm{padding:.45em .7em;font-size:12px;}
}

/* ---------- 18. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  .status-lamp__dot{animation:none;opacity:1;}
  [data-js="on"] [data-reveal]{opacity:1;transform:none;}
}