/* ==========================================================================
   333看台 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 通用组件 / 头部 / 页脚 / 响应式
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root{
  --void:#071E1A;
  --cabinet:#0D2B26;
  --cabinet-lift:#10332C;
  --lime:#B6FF3B;
  --lime-soft:#CBFF6B;
  --amber:#FFB648;
  --slate:#8FA6B8;
  --mist:#E8F0EA;
  --moss:#9CB8A8;
  --wine:#6E2233;
  --indigo:#29255C;
  --line:#2A4A42;
  --on-lime:#06231B;
  --container:1180px;
  --gutter:clamp(18px,4vw,44px);
  --header-h:74px;
  --radius-lg:26px;
  --radius-md:18px;
  --radius-sm:10px;
  --radius-pill:999px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SF Mono","JetBrains Mono",Menlo,Consolas,"Courier New",monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,ul,ol,dl,dd{margin:0}
ul,ol{list-style:none;padding:0}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse}
html.is-nav-open,html.is-nav-open body{overflow:hidden}

/* ---------- 3. 基础排版与焦点 ---------- */
body{
  min-height:100vh;
  background-color:var(--void);
  background-image:
    radial-gradient(1100px 520px at 88% -8%, rgba(182,255,59,.07), transparent 62%),
    radial-gradient(900px 480px at 2% -4%, rgba(143,166,184,.09), transparent 60%);
  background-repeat:no-repeat;
  color:var(--mist);
  font-family:var(--font-sans);
  font-size:clamp(15px,.35vw + 14px,17px);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-weight:800;
  line-height:1.12;
  letter-spacing:-.02em;
  font-stretch:87.5%;
  text-wrap:balance;
}
h1{font-size:clamp(2.5rem,5.4vw,4.6rem)}
h2{font-size:clamp(1.7rem,3vw,2.4rem)}
h3{font-size:clamp(1.2rem,1.8vw,1.5rem)}
strong{font-weight:700;color:var(--mist)}
::selection{background:var(--lime);color:var(--on-lime)}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:4px}

.skip-link{
  position:fixed;
  top:12px;left:12px;
  z-index:200;
  padding:.7em 1.15em;
  border-radius:var(--radius-sm);
  background:var(--lime);
  color:var(--on-lime);
  font-size:.9rem;
  font-weight:700;
  transform:translateY(-180%);
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0);outline:2px solid var(--mist);outline-offset:2px}

/* ---------- 4. 布局工具 ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(34px,5vw,78px)}
.section-tight{padding-block:clamp(22px,3vw,42px)}
.rule{height:1px;border:0;background:var(--line);margin-block:clamp(20px,3vw,34px)}
.grid{display:grid;gap:clamp(14px,2vw,26px)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-asym{grid-template-columns:minmax(0,1.4fr) minmax(0,.85fr)}

/* ---------- 5. 通用文本组件 ---------- */
.lede{
  max-width:34em;
  font-size:clamp(17px,1.4vw,20px);
  line-height:1.7;
  color:rgba(232,240,234,.9);
}
.prose{max-width:34em}
.prose p{color:rgba(232,240,234,.86)}
.prose p + p{margin-top:1.05em}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.5em}
.prose a{
  color:var(--lime);
  text-decoration:underline;
  text-underline-offset:.22em;
  text-decoration-thickness:1px;
  text-decoration-color:rgba(182,255,59,.45);
}
.prose a:hover{text-decoration-color:var(--lime)}
.prose ul{display:flex;flex-direction:column;gap:.5em;margin-top:.9em}
.prose ul li{position:relative;padding-left:1.15em;color:rgba(232,240,234,.86)}
.prose ul li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:7px;height:1px;background:var(--lime);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--lime);
}
.eyebrow::before{content:"";width:6px;height:6px;background:var(--lime);border-radius:1px}
.stamp{
  display:inline-block;
  writing-mode:vertical-rl;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.32em;
  text-transform:uppercase;
  color:var(--slate);
}
.data{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  color:var(--amber);
}

/* ---------- 6. 标签与状态 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:.3em .72em;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(143,166,184,.08);
  color:var(--slate);
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.08em;
  line-height:1.4;
  white-space:nowrap;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.tag-lime{color:var(--on-lime);background:var(--lime);border-color:var(--lime);font-weight:700}
.tag-amber{color:var(--amber);border-color:rgba(255,182,72,.45);background:rgba(255,182,72,.1)}
.tag-wine{color:#F2C3CE;border-color:rgba(110,34,51,.95);background:rgba(110,34,51,.5)}
a.tag:hover,button.tag:hover{border-color:rgba(182,255,59,.55);color:var(--lime);background:rgba(182,255,59,.1)}
a.tag-lime:hover,button.tag-lime:hover{color:var(--on-lime);background:var(--lime-soft);border-color:var(--lime-soft)}
.status-dot{
  display:inline-block;flex:none;
  width:7px;height:7px;border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 3px rgba(182,255,59,.18);
}

/* ---------- 7. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.62em 1.15em;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-family:var(--font-sans);
  font-size:.9rem;
  font-weight:700;
  letter-spacing:.01em;
  line-height:1.2;
  white-space:nowrap;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{
  background:var(--lime);
  color:var(--on-lime);
  border-color:var(--lime);
  box-shadow:0 10px 24px -18px var(--lime);
}
.btn-primary:hover{background:var(--lime-soft);border-color:var(--lime-soft);transform:translateY(-1px)}
.btn-ghost{
  background:transparent;
  color:var(--mist);
  border-color:var(--line);
}
.btn-ghost:hover{border-color:rgba(182,255,59,.55);color:var(--lime);background:rgba(182,255,59,.08)}
.btn-quiet{
  background:transparent;color:var(--slate);border-color:transparent;
  padding-inline:.5em;
}
.btn-quiet:hover{color:var(--lime)}
.btn-compact{font-size:.84rem;padding:.55em 1em}
.btn:focus-visible{outline:2px solid var(--lime);outline-offset:3px}

/* ---------- 8. 卡片 / 媒体 / 面包屑 ---------- */
.card{
  position:relative;
  background:var(--cabinet);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:clamp(18px,2.4vw,30px);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease),background-color .25s var(--ease);
}
.card:focus-within{border-color:rgba(182,255,59,.5)}
@media (hover:hover){
  .card:hover{
    transform:translateY(-3px);
    border-color:rgba(182,255,59,.35);
    background:var(--cabinet-lift);
    box-shadow:0 26px 50px -38px rgba(0,0,0,.95);
  }
}
.media{
  position:relative;
  display:block;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(150deg,var(--cabinet-lift),var(--void) 58%,var(--cabinet));
  aspect-ratio:16 / 10;
}
.media img,.media picture>img{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21 / 9}
.media--tall{aspect-ratio:4 / 5}
.media--square{aspect-ratio:1 / 1}
.media::after{
  content:"";
  position:absolute;top:12px;right:12px;
  width:26px;height:26px;
  border-top:1px solid rgba(182,255,59,.55);
  border-right:1px solid rgba(182,255,59,.55);
  border-top-right-radius:6px;
  pointer-events:none;
}
.media-caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.06em;
  line-height:1.6;
  color:var(--slate);
}
.breadcrumb{padding-block:14px 0}
.breadcrumb-list{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.06em;
  color:var(--slate);
}
.breadcrumb-list li{display:inline-flex;align-items:center;gap:6px}
.breadcrumb-list li + li::before{content:"/";color:rgba(143,166,184,.45)}
.breadcrumb-list a{color:var(--slate)}
.breadcrumb-list a:hover{color:var(--lime)}
.breadcrumb-list [aria-current="page"]{color:var(--mist)}

/* ---------- 9. 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:linear-gradient(180deg,rgba(7,30,26,.96) 0%,rgba(7,30,26,.74) 64%,rgba(7,30,26,0) 100%);
  border-bottom:1px solid transparent;
  transition:background-color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header[data-scrolled]{
  background:var(--cabinet);
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px -20px rgba(0,0,0,.95);
}
.header-inner{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:clamp(12px,2vw,30px);
  min-height:var(--header-h);
  padding-block:10px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  font-family:var(--font-mono);
  font-size:1rem;
  font-weight:700;
  letter-spacing:.08em;
  line-height:1;
  color:var(--lime);
  background:rgba(182,255,59,.1);
  border:1px solid rgba(182,255,59,.38);
  border-radius:var(--radius-sm);
  padding:8px 9px 7px;
}
.brand-text{display:flex;flex-direction:column;gap:3px}
.brand-name{font-size:1rem;font-weight:800;letter-spacing:.02em;line-height:1.1;color:var(--mist)}
.brand-sub{
  font-family:var(--font-mono);
  font-size:.62rem;
  letter-spacing:.22em;
  line-height:1;
  color:var(--slate);
}
.site-nav{display:flex;justify-content:center;min-width:0}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{display:inline-flex}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  border-radius:8px;
  font-size:.94rem;
  font-weight:600;
  color:rgba(232,240,234,.76);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;left:12px;right:12px;bottom:5px;
  height:2px;border-radius:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--mist);background:rgba(232,240,234,.05)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--lime)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav-link:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.nav-panel{display:none}
.nav-status{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.14em;
  color:var(--slate);
}
.header-actions{
  position:relative;
  z-index:102;
  display:flex;
  align-items:center;
  gap:10px;
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(13,43,38,.72);
  color:var(--mist);
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(182,255,59,.5);color:var(--lime)}
.nav-toggle-bars{display:flex;flex-direction:column;gap:5px;width:18px}
.nav-toggle-bar{
  display:block;height:2px;width:100%;
  background:currentColor;border-radius:2px;
  transition:transform .22s var(--ease);
}
.site-header[data-open] .nav-toggle{background:var(--lime);color:var(--on-lime);border-color:var(--lime)}
.site-header[data-open] .nav-toggle-bar:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bar:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}
.scroll-meter{
  position:absolute;left:0;right:0;bottom:0;
  height:2px;
  background:rgba(143,166,184,.14);
  overflow:hidden;
}
.scroll-meter-fill{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--lime),var(--amber));
}

/* ---------- 10. 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--cabinet);
  color:var(--mist);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;left:0;right:0;top:0;
  height:3px;
  background:linear-gradient(90deg,
    var(--lime) 0 12%,
    var(--line) 12% 68%,
    var(--amber) 68% 73%,
    var(--wine) 73% 82%,
    var(--indigo) 82% 100%);
}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr .8fr .8fr 1.4fr;
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(44px,6vw,72px) clamp(30px,4vw,46px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.brand-footer{display:inline-flex}
.footer-tagline{
  max-width:14em;
  padding-left:14px;
  border-left:2px solid var(--lime);
  font-size:clamp(1.05rem,1.6vw,1.28rem);
  font-weight:800;
  line-height:1.45;
  letter-spacing:-.01em;
  color:var(--mist);
}
.footer-col{display:flex;flex-direction:column}
.footer-col-title{
  display:flex;align-items:center;gap:8px;
  margin-bottom:16px;
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:500;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--slate);
}
.footer-col-title::before{content:"";width:6px;height:6px;background:var(--lime);border-radius:1px}
.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{
  display:inline-block;
  font-size:.94rem;
  color:rgba(232,240,234,.72);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-links a:hover{color:var(--lime);transform:translateX(3px)}
.footer-col-contact .footer-note{margin-top:16px}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact-row{display:flex;flex-direction:column;gap:2px}
.footer-contact-label{
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.2em;
  color:var(--slate);
}
.footer-contact-value{
  font-size:.9rem;
  line-height:1.6;
  color:rgba(232,240,234,.9);
  overflow-wrap:anywhere;
}
.footer-note{
  max-width:46em;
  font-size:.8rem;
  line-height:1.7;
  color:var(--moss);
}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding-block:20px 28px;
  border-top:1px solid var(--line);
}
.footer-legal{
  font-family:var(--font-mono);
  font-size:.76rem;
  letter-spacing:.04em;
  color:var(--slate);
}
.footer-legal-links{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:.8rem}
.footer-legal-links a{color:var(--slate)}
.footer-legal-links a:hover{color:var(--lime)}

/* ---------- 11. 响应式：栅格与页脚 ---------- */
@media (max-width:1119px){
  .header-actions .btn-ghost{display:none}
}
@media (max-width:1024px){
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
  .footer-col-contact{grid-column:1 / -1}
}
@media (max-width:900px){
  .grid-asym,.grid-3{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:620px){
  .grid-2{grid-template-columns:minmax(0,1fr)}
  .footer-top{grid-template-columns:minmax(0,1fr);gap:30px}
  .footer-brand,.footer-col-contact{grid-column:auto}
  .footer-base{flex-direction:column;align-items:flex-start}
}

/* ---------- 12. 响应式：全屏档案目录 ---------- */
@media (max-width:959px){
  :root{--header-h:64px}
  .header-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
  .site-header[data-open]{
    background:var(--void);
    border-bottom-color:transparent;
    box-shadow:none;
  }
  .site-nav{
    position:fixed;
    inset:0;
    z-index:80;
    display:flex;
    flex-direction:column;
    gap:8px;
    padding:calc(var(--header-h) + 32px) var(--gutter) 40px;
    overflow-y:auto;
    background-color:rgba(7,30,26,.99);
    background-image:repeating-linear-gradient(180deg,rgba(143,166,184,.09) 0 1px,transparent 1px 56px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transform:translateY(-10px);
    transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease);
  }
  .site-nav[data-open]{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:none;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    counter-reset:nav;
  }
  .nav-item{
    display:block;
    counter-increment:nav;
    border-bottom:1px solid var(--line);
  }
  .nav-link{
    display:flex;
    align-items:baseline;
    gap:14px;
    padding:16px 4px;
    border-radius:0;
    font-size:clamp(1.35rem,6vw,1.9rem);
    font-weight:800;
    letter-spacing:-.01em;
    color:var(--mist);
    background:none;
  }
  .nav-link::before{
    content:counter(nav,decimal-leading-zero);
    font-family:var(--font-mono);
    font-size:.72rem;
    font-weight:500;
    letter-spacing:.1em;
    color:var(--slate);
  }
  .nav-link::after{display:none}
  .nav-link:hover{color:var(--mist);background:none}
  .nav-link[aria-current="page"]{color:var(--lime)}
  .nav-link[aria-current="page"]::before{color:var(--lime)}
  .nav-panel{display:flex;flex-direction:column;gap:12px;margin-top:28px}
  .nav-panel .btn{width:100%;padding-block:.85em;font-size:.95rem}
}

/* ---------- 13. 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;
  }
  .card:hover{transform:none}
  .footer-links a:hover{transform:none}
  .btn-primary:hover{transform:none}
}