/* ============================================================
   1号站游艺 · 共享站点样式 /assets/site.css
   结构：变量 → 重置 → 排版 → 布局 → 组件 → 头部 → 页脚 → 动效 → 响应式
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#0B1B2B;
  --ink-deep:#06121C;
  --panel:#16242F;
  --line:#2E3E4A;
  --amber:#E2A13C;
  --amber-soft:#F2C879;
  --cinnabar:#C8462F;
  --cinnabar-deep:#A83A26;
  --paper:#F4EFE6;
  --mist:#8FA3B0;
  --archive:#3F5B57;

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

  --sp-1:.25rem;
  --sp-2:.5rem;
  --sp-3:.75rem;
  --sp-4:1rem;
  --sp-5:1.5rem;
  --sp-6:2rem;
  --sp-7:3rem;
  --sp-8:4rem;
  --sp-9:6rem;

  --shell:1320px;
  --gutter:clamp(1rem,4vw,2.5rem);
  --ease:cubic-bezier(.22,.61,.36,1);
  --radius:2px;
}

/* ---------- 2. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:1.0625rem;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
strong{font-weight:700;color:var(--paper);}
hr{border:0;margin:0;}
:focus-visible{outline:2px solid var(--amber-soft);outline-offset:3px;border-radius:var(--radius);}
::selection{background:rgba(226,161,60,.32);color:var(--paper);}
#main-content{scroll-margin-top:104px;}
main [id]{scroll-margin-top:104px;}

/* ---------- 3. 中文排版 ---------- */
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.14;
  letter-spacing:.06em;
  text-wrap:balance;
}
p{text-wrap:pretty;}
.title-xl{font-size:clamp(2.5rem,6.4vw,5.5rem);line-height:1.06;}
.title-lg{font-size:clamp(1.875rem,4.2vw,3.25rem);}
.title-md{font-size:clamp(1.375rem,2.4vw,2rem);letter-spacing:.04em;}
.lede{
  font-size:clamp(1.0625rem,1.6vw,1.25rem);
  line-height:1.75;
  color:var(--mist);
  max-width:60ch;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  font-family:var(--font-mono);
  font-size:.75rem;
  font-weight:400;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--amber);
}
.index-num{
  font-family:var(--font-mono);
  font-size:.8125rem;
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  color:var(--amber);
}
.muted{color:var(--mist);}
.rule{display:block;height:1px;background:var(--line);border:0;}

/* ---------- 4. 布局 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(2.75rem,6.5vw,5.5rem);}
.section--tight{padding-block:clamp(1.75rem,3.5vw,2.75rem);}
.stack{display:grid;gap:var(--sp-4);align-content:start;}
.grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--sp-5);
}
.grid > *{min-width:0;}
.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-12{grid-column:span 12;}

/* ---------- 5. 组件 ---------- */
.panel{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(1.25rem,3vw,2.5rem);
  box-shadow:0 4px 0 -2px rgba(6,18,28,.85);
}
.panel--flat{background:transparent;box-shadow:none;}
.panel--deep{background:var(--ink-deep);}
.panel--offset{margin-left:clamp(0px,2.5vw,48px);}
.panel__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:var(--sp-3);
  margin-bottom:var(--sp-5);
  padding-bottom:var(--sp-3);
  border-bottom:1px solid var(--line);
}

.card-band{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:var(--sp-4);
  min-height:96px;
  padding:var(--sp-4) var(--sp-5);
  background:linear-gradient(90deg,rgba(63,91,87,.30),rgba(22,36,47,.92) 46%);
  border:1px solid var(--line);
  border-left:3px solid var(--amber);
  border-radius:var(--radius);
  transition:transform .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
a.card-band:hover{
  transform:translateX(3px);
  border-left-color:var(--cinnabar);
  background:linear-gradient(90deg,rgba(63,91,87,.44),rgba(22,36,47,.96) 46%);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.2rem .6rem;
  border:1px solid var(--line);
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.1em;
  color:var(--mist);
  text-transform:uppercase;
  white-space:nowrap;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.7rem 1.25rem;
  font-family:var(--font-body);
  font-size:.9375rem;
  font-weight:700;
  letter-spacing:.06em;
  border:1px solid transparent;
  border-radius:var(--radius);
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .12s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn--primary{background:var(--cinnabar);border-color:var(--cinnabar);color:var(--paper);}
.btn--primary:hover{background:var(--cinnabar-deep);border-color:var(--cinnabar-deep);}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--paper);}
.btn--ghost:hover{border-color:var(--amber);color:var(--amber-soft);}
.btn--quiet{background:rgba(226,161,60,.12);border-color:rgba(226,161,60,.38);color:var(--amber-soft);}
.btn--quiet:hover{background:rgba(226,161,60,.2);border-color:var(--amber);}

.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5rem;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.08em;
  color:var(--mist);
}
.breadcrumbs li{display:flex;align-items:center;gap:.5rem;}
.breadcrumbs li + li::before{content:"/";color:var(--line);}
.breadcrumbs a{color:var(--mist);transition:color .16s var(--ease);}
.breadcrumbs a:hover{color:var(--amber-soft);}
.breadcrumbs [aria-current="page"]{color:var(--paper);}

.prose{max-width:68ch;}
.prose > * + *{margin-top:1.2em;}
.prose h2{font-size:clamp(1.375rem,2.4vw,1.75rem);letter-spacing:.04em;}
.prose h3{font-size:1.125rem;letter-spacing:.03em;color:var(--amber-soft);}
.prose ul{display:grid;gap:.5rem;}
.prose ul > li{position:relative;padding-left:1.15rem;}
.prose ul > li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:6px;
  height:1px;
  background:var(--amber);
}
.prose a{color:var(--amber-soft);border-bottom:1px solid rgba(226,161,60,.35);}
.prose a:hover{border-bottom-color:var(--amber);}

.archive-table{
  width:100%;
  border-collapse:collapse;
  font-size:.9375rem;
  line-height:1.6;
}
.archive-table thead th{
  background:var(--archive);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:.75rem;
  font-weight:400;
  letter-spacing:.1em;
  text-align:left;
}
.archive-table th,
.archive-table td{
  padding:.7rem 1rem;
  border-bottom:1px solid var(--line);
  text-align:left;
  vertical-align:top;
}
.archive-table tbody tr:hover{background:rgba(46,62,74,.24);}
.archive-table .num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  color:var(--mist);
  white-space:nowrap;
}

.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 9;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:
    radial-gradient(120% 90% at 10% 0%,rgba(226,161,60,.18),transparent 62%),
    radial-gradient(90% 80% at 100% 100%,rgba(63,91,87,.55),transparent 68%),
    var(--panel);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(90deg,rgba(244,239,230,.045) 0 1px,transparent 1px 24px);
  pointer-events:none;
}
.media-frame > img{width:100%;height:100%;object-fit:cover;}
.media-frame--wide{aspect-ratio:21 / 9;}
.media-frame--tall{aspect-ratio:4 / 5;}
.media-frame--square{aspect-ratio:1 / 1;}

/* ---------- 6. 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  padding-block:1rem;
  background:linear-gradient(180deg,rgba(6,18,28,.97),rgba(6,18,28,.80));
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:padding-block .24s var(--ease),background .24s var(--ease);
}
.site-header[data-shrunk]{padding-block:.5rem;background:rgba(6,18,28,.95);}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-5);
}

.skip-link{
  position:absolute;
  left:50%;
  top:.5rem;
  z-index:120;
  padding:.6rem 1rem;
  background:var(--amber);
  color:var(--ink-deep);
  font-size:.875rem;
  font-weight:700;
  letter-spacing:.06em;
  border-radius:var(--radius);
  transform:translate(-50%,-160%);
  transition:transform .18s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translate(-50%,0);}

.brand{
  display:inline-flex;
  align-items:center;
  gap:.75rem;
  flex:0 0 auto;
  min-width:0;
}
.brand__mark{
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  flex:0 0 auto;
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.0625rem;
  color:var(--ink-deep);
  background:var(--amber);
  border-radius:var(--radius);
  box-shadow:0 0 0 1px rgba(242,200,121,.45),0 0 18px rgba(226,161,60,.28);
}
.brand__text{display:flex;flex-direction:column;line-height:1.18;min-width:0;}
.brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.0625rem;
  letter-spacing:.08em;
  color:var(--paper);
  white-space:nowrap;
}
.brand__domain{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.08em;
  color:var(--mist);
  white-space:nowrap;
}
.brand:hover .brand__domain{color:var(--amber-soft);}

.nav-dock{
  display:flex;
  align-items:center;
  gap:.125rem;
  padding:.25rem;
  background:rgba(22,36,47,.94);
  border:1px solid var(--line);
  border-radius:999px;
  box-shadow:0 2px 0 rgba(6,18,28,.7),inset 0 1px 0 rgba(244,239,230,.045);
}
.nav-dock__list{display:flex;align-items:center;gap:.125rem;}
.nav-link{
  display:inline-block;
  padding:.5rem .875rem;
  font-size:.9375rem;
  letter-spacing:.04em;
  color:var(--mist);
  border-radius:999px;
  white-space:nowrap;
  transition:color .16s var(--ease),background .16s var(--ease),box-shadow .16s var(--ease);
}
.nav-link:hover{
  color:var(--paper);
  background:linear-gradient(90deg,var(--amber) 0 2px,rgba(244,239,230,.05) 2px);
}
.nav-link[aria-current="page"]{
  color:var(--amber-soft);
  background:rgba(226,161,60,.14);
  box-shadow:inset 0 0 0 1px rgba(226,161,60,.32);
}

.header-actions{display:flex;align-items:center;gap:.5rem;flex:0 0 auto;}
.header-cta{padding:.55rem 1rem;font-size:.875rem;}

.nav-toggle{
  display:none;
  align-items:center;
  gap:.5rem;
  padding:.5rem .8rem;
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--paper);
  font-size:.875rem;
  letter-spacing:.06em;
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.nav-toggle:hover{border-color:var(--amber);color:var(--amber-soft);}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;
  height:2px;
  background:var(--amber);
  transition:background .16s var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:2px;
  background:var(--amber);
  transition:transform .2s var(--ease);
}
.nav-toggle__bars::before{top:-5px;}
.nav-toggle__bars::after{top:5px;}
.site-header[data-open] .nav-toggle{border-color:var(--amber);color:var(--amber-soft);}
.site-header[data-open] .nav-toggle__bars{background:transparent;}
.site-header[data-open] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg);}
.site-header[data-open] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg);}

.scroll-meter{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  pointer-events:none;
}
.scroll-meter__bar{
  display:block;
  height:100%;
  width:100%;
  background:linear-gradient(90deg,var(--amber),var(--cinnabar));
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .1s linear;
}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  background:var(--ink-deep);
  border-top:1px solid var(--line);
  padding-block:clamp(2.5rem,6vw,4.5rem) 0;
}
.footer-inner{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:var(--sp-6);
  align-items:start;
}
.footer-brand__name{
  display:inline-block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.375rem;
  letter-spacing:.1em;
  color:var(--paper);
  transition:color .16s var(--ease);
}
.footer-brand__name:hover{color:var(--amber-soft);}
.footer-brand__domain{
  margin-top:.25rem;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.1em;
  color:var(--mist);
}
.footer-brand__note{
  margin-top:var(--sp-4);
  max-width:30ch;
  font-size:.9375rem;
  line-height:1.75;
  color:var(--mist);
}
.footer-col__title{
  margin-bottom:var(--sp-4);
  font-family:var(--font-mono);
  font-size:.75rem;
  font-weight:400;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--amber);
}
.footer-list{display:grid;gap:.45rem;}
.footer-list__item{display:flex;}
.footer-link{
  display:inline-flex;
  align-items:baseline;
  gap:.6rem;
  padding-left:.5rem;
  margin-left:-.5rem;
  border-left:2px solid transparent;
  font-size:.9375rem;
  color:var(--mist);
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-link:hover{color:var(--paper);border-left-color:var(--amber);}
.footer-index-num{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.06em;
  color:var(--archive);
  transition:color .16s var(--ease);
}
.footer-link:hover .footer-index-num{color:var(--amber);}
.footer-contact{display:grid;gap:.7rem;font-size:.9375rem;}
.footer-contact__row{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:.75rem;
  align-items:baseline;
}
.footer-contact__key{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.1em;
  color:var(--mist);
  white-space:nowrap;
}
.footer-contact__val{color:var(--paper);word-break:break-word;}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-3);
  margin-top:var(--sp-8);
  padding-block:var(--sp-5);
  border-top:1px solid var(--line);
}
.footer-base__copy{
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.06em;
  color:var(--mist);
}
.footer-back{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.4rem .8rem;
  font-size:.875rem;
  letter-spacing:.06em;
  color:var(--amber-soft);
  border:1px solid rgba(226,161,60,.32);
  border-radius:999px;
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.footer-back:hover{background:rgba(226,161,60,.14);border-color:var(--amber);}

/* ---------- 8. 动效 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:
    opacity .42s var(--ease) var(--reveal-delay,0ms),
    transform .42s var(--ease) var(--reveal-delay,0ms);
}
[data-reveal].is-revealed{opacity:1;transform:none;}

/* ---------- 9. 响应式 ---------- */
@media (max-width:1024px){
  .col-3,.col-4,.col-5{grid-column:span 6;}
  .col-7,.col-8,.col-9{grid-column:span 12;}
  .footer-inner{grid-template-columns:1fr 1fr;}
}

@media (max-width:980px){
  .nav-toggle{display:inline-flex;}
  .header-cta{display:none;}
  .nav-dock{
    position:fixed;
    top:76px;
    left:var(--gutter);
    right:var(--gutter);
    z-index:90;
    display:block;
    max-height:calc(100vh - 110px);
    overflow:auto;
    padding:.75rem;
    border-radius:14px;
    background:rgba(11,27,43,.99);
    box-shadow:0 18px 44px -18px rgba(0,0,0,.92),inset 0 1px 0 rgba(244,239,230,.05);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s linear;
    -webkit-overflow-scrolling:touch;
  }
  .site-header[data-open] .nav-dock{opacity:1;visibility:visible;transform:none;}
  .nav-dock__list{display:block;}
  .nav-link{
    display:block;
    padding:.75rem .875rem;
    font-size:1rem;
    color:var(--paper);
    border-radius:6px;
  }
  .nav-link:hover{background:linear-gradient(90deg,var(--amber) 0 2px,rgba(244,239,230,.06) 2px);}
  .nav-link[aria-current="page"]{box-shadow:none;color:var(--amber-soft);}
  .breadcrumbs{font-size:.6875rem;}
}

@media (max-width:700px){
  body{font-size:1rem;}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9,.col-12{grid-column:span 12;}
  .grid{gap:var(--sp-4);}
  .panel--offset{margin-left:0;}
  .card-band{grid-template-columns:auto minmax(0,1fr);row-gap:.35rem;min-height:84px;padding:var(--sp-4);}
  .card-band > .tag{grid-column:2;justify-self:start;}
  .footer-inner{grid-template-columns:1fr;gap:var(--sp-5);}
  .footer-base{margin-top:var(--sp-6);}
  .brand__domain{display:none;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  [data-reveal]{
    opacity:1;
    transform:none;
    transition:opacity .12s linear;
  }
  .scroll-meter__bar{transition:none;}
  .site-header,
  .nav-dock,
  .nav-link,
  .skip-link,
  .btn,
  .card-band,
  .footer-link,
  .footer-back,
  .brand__mark{
    transition-duration:.12s;
  }
  .nav-link:hover,
  a.card-band:hover{transform:none;}
}