/* ===== 9Z看台 · /assets/site.css ===== */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:120px}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,dl,dt,dd,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}

:root{
  --field:#07130F;
  --field-2:#0A1A14;
  --green:#123A2E;
  --blue:#0E1F2B;
  --paper:#F2E9D8;
  --paper-dim:#D9CFB8;
  --ink:#0B1512;
  --cyan:#19E3C8;
  --orange:#FF7A2F;
  --amber:#FFD166;
  --steel:#8FA3AE;
  --red:#D9432F;

  --line:rgba(143,163,174,.24);
  --line-soft:rgba(143,163,174,.14);
  --line-strong:rgba(143,163,174,.46);
  --line-ink:rgba(11,21,18,.14);

  --font-display:"Archivo Black","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-editorial:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --font-body:Inter,"Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;

  --shell:1320px;
  --pad:clamp(16px,4vw,40px);
  --shadow-1:0 1px 0 rgba(242,233,216,.04),0 10px 26px -20px rgba(0,0,0,.95);
  --shadow-2:0 1px 0 rgba(242,233,216,.06),0 20px 46px -28px rgba(0,0,0,.98);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 基础排版 ---------- */
body{
  background:
    radial-gradient(1100px 560px at 84% -8%,rgba(25,227,200,.07),transparent 62%),
    radial-gradient(900px 520px at -8% 18%,rgba(255,122,47,.055),transparent 62%),
    var(--field);
  color:var(--steel);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:800;
  color:var(--paper);
  line-height:1.12;
  letter-spacing:-.02em;
}
h1{font-size:clamp(32px,5vw,64px)}
h2{font-size:clamp(24px,3.2vw,40px)}
h3{font-size:clamp(18px,2.2vw,28px)}
h4{font-size:clamp(16px,1.5vw,20px)}
p{max-width:42em}
strong{color:var(--paper);font-weight:600}
::selection{background:var(--cyan);color:var(--ink)}

:focus{outline:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:3px}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  transform:translateY(-260%);
  background:var(--cyan);color:var(--ink);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;
  padding:10px 18px;border-radius:4px;
  box-shadow:var(--shadow-2);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 通用排版容器 ---------- */
.container{width:100%;max-width:var(--shell);margin:0 auto;padding:0 var(--pad)}
.prose{max-width:38em;color:var(--paper-dim);font-size:16px;line-height:1.85}
.prose p+p{margin-top:1em}
.prose h2,.prose h3{margin:1.6em 0 .6em}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(25,227,200,.45)}
.prose a:hover{border-bottom-color:var(--orange);color:var(--orange)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--orange)}
.section{padding:clamp(40px,6vw,88px) 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px 24px;margin-bottom:clamp(20px,3vw,36px)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:12px 22px;border-radius:4px;border:1px solid transparent;
  font-size:14px;font-weight:600;letter-spacing:.02em;line-height:1.2;
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--orange);border-color:var(--orange);color:#200F04}
.btn-primary:hover{background:var(--amber);border-color:var(--amber)}
.btn-ghost{border-color:var(--line-strong);color:var(--paper)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}

/* ---------- 标签 ---------- */
.tag{
  display:inline-block;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.09em;
  padding:4px 11px;border:1px solid var(--line-strong);border-radius:999px;
  color:var(--steel);
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.tag:hover{border-color:var(--cyan);color:var(--cyan)}
.tag.is-active,.tag[aria-pressed="true"]{background:var(--orange);border-color:var(--orange);color:#200F04}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  padding:22px 0;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--steel);
}
.breadcrumb li{display:flex;align-items:center;gap:9px}
.breadcrumb li+li::before{content:"/";color:rgba(143,163,174,.5)}
.breadcrumb a{color:var(--paper-dim)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb [aria-current="page"]{color:var(--cyan)}

/* ---------- 网格与模块 ---------- */
.grid{display:grid;gap:clamp(14px,2vw,22px)}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}

.card{
  background:var(--green);
  border:1px solid var(--line);
  border-radius:8px;
  padding:clamp(18px,2.4vw,30px);
  box-shadow:var(--shadow-1);
  transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.card:hover{border-color:var(--cyan);box-shadow:var(--shadow-2)}
.card-paper{background:var(--paper);border-color:var(--line-ink);color:var(--ink)}
.card-paper h2,.card-paper h3,.card-paper h4{color:var(--ink)}
.card-paper .eyebrow{color:#0E6B5C}

/* ---------- 图片占位容器（页面阶段放 <img>） ---------- */
.media{
  position:relative;display:block;overflow:hidden;
  border:1px solid var(--line);border-radius:6px;
  background:linear-gradient(135deg,var(--green) 0%,var(--blue) 88%);
}
.media>img{width:100%;height:100%;object-fit:cover}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(242,233,216,.09) 1px,transparent 1px);
  background-size:4px 4px;opacity:.55;
}
.media-16-9{aspect-ratio:16/9}
.media-3-2{aspect-ratio:3/2}
.media-1-1{aspect-ratio:1/1}
.media-2-3{aspect-ratio:2/3}

/* ---------- 看台编号 rail ---------- */
.rail{
  position:sticky;top:120px;
  display:grid;gap:1px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.09em;
}
.rail-item{
  padding:7px 0 7px 13px;
  border-left:1px solid var(--line);
  color:rgba(143,163,174,.62);
  transition:color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease);
}
.rail-item:hover{color:var(--paper);transform:translateX(2px)}
.rail-item[aria-current="true"]{color:var(--cyan);border-left-color:var(--cyan)}

/* ---------- 滚动显现 ---------- */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 头部 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--field);
  border-bottom:1px solid var(--line);
  transition:background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header[data-scrolled]{
  background:var(--field-2);
  box-shadow:0 18px 34px -30px rgba(0,0,0,.98);
}
.header-inner{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  grid-template-areas:"brand toggle" "tags tags";
  align-items:center;
  gap:6px 16px;
  padding:9px var(--pad);
  max-width:var(--shell);
  margin:0 auto;
}
.header-brand{grid-area:brand;display:flex;align-items:baseline;gap:14px;min-width:0}
.brand-mark{
  display:inline-flex;align-items:baseline;gap:1px;
  font-family:var(--font-display);
  font-size:clamp(20px,2.4vw,26px);
  line-height:1;letter-spacing:-.03em;
  transition:opacity .16s var(--ease);
}
.brand-mark:hover{opacity:.82}
.brand-num{color:var(--amber)}
.brand-name{color:var(--paper)}
.brand-line{
  display:none;
  font-size:12px;line-height:1.4;letter-spacing:.05em;
  color:var(--steel);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  transition:opacity .2s var(--ease);
}

.stand-tags{
  grid-area:tags;
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;overscroll-behavior-x:contain;
  padding:2px 0 5px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.stand-tags::-webkit-scrollbar{display:none}
.stand-tag{
  flex:0 0 auto;white-space:nowrap;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  padding:6px 13px;border:1px solid var(--line);border-radius:999px;
  color:var(--steel);
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.stand-tag:hover{color:var(--cyan);border-color:var(--cyan)}
.stand-tag[aria-current="page"]{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}

.nav-toggle{
  grid-area:toggle;justify-self:end;
  width:46px;height:40px;
  display:grid;place-content:center;gap:5px;
  border:1px solid var(--line);border-radius:6px;
  background:rgba(18,58,46,.45);
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan)}
.nav-toggle[aria-expanded="true"]{border-color:var(--orange);background:rgba(255,122,47,.16)}
.nav-toggle-bar{display:block;width:20px;height:1.5px;background:var(--paper);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

.primary-nav{
  grid-area:nav;
  position:fixed;inset:0;z-index:70;
  padding:150px var(--pad) 44px;
  overflow-y:auto;
  opacity:0;visibility:hidden;pointer-events:none;
  transform:translateY(-6px);
  background:
    radial-gradient(120% 74% at 88% 0%,rgba(25,227,200,.12),transparent 62%),
    radial-gradient(110% 66% at 0% 100%,rgba(255,122,47,.12),transparent 62%),
    var(--blue);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
}
.primary-nav[data-open]{opacity:1;visibility:visible;pointer-events:auto;transform:none}
.nav-list{display:grid;gap:0}
.nav-list>li{border-bottom:1px solid var(--line-soft)}
.nav-list a{
  position:relative;display:block;
  padding:14px 2px;
  font-size:19px;font-weight:600;letter-spacing:.01em;
  color:var(--paper-dim);
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.nav-list a:hover{color:var(--cyan);padding-left:6px}
.nav-list a[aria-current="page"]{color:var(--cyan)}
.nav-list a[aria-current="page"]::before{
  content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);
  width:6px;height:6px;background:var(--orange);border-radius:50%;
}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--amber));
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .12s linear;
  pointer-events:none;
}

@media (max-width:999px){
  body.nav-open{overflow:hidden}
}

@media (min-width:1000px){
  .header-inner{
    grid-template-columns:auto minmax(0,1fr) auto;
    grid-template-areas:"brand tags nav";
    gap:0 30px;
    padding:0 var(--pad);
    min-height:88px;
    transition:min-height .2s var(--ease);
  }
  .site-header[data-scrolled] .header-inner{min-height:60px}
  .site-header[data-scrolled] .brand-line{opacity:0}
  .stand-tags{margin:0;padding:0;overflow:visible;justify-content:flex-start}
  .nav-toggle{display:none}
  .primary-nav{
    position:static;inset:auto;z-index:auto;
    opacity:1;visibility:visible;pointer-events:auto;transform:none;
    padding:0;overflow:visible;background:none;
  }
  .nav-list{display:flex;align-items:center;gap:clamp(6px,1.5vw,22px)}
  .nav-list>li{border-bottom:0}
  .nav-list a{
    padding:10px 2px;
    font-size:14px;font-weight:500;letter-spacing:.02em;
    color:var(--steel);
  }
  .nav-list a:hover{padding-left:2px;color:var(--paper)}
  .nav-list a[aria-current="page"]{color:var(--cyan)}
  .nav-list a[aria-current="page"]::before{display:none}
  .nav-list a::after{
    content:"";position:absolute;left:0;right:0;bottom:4px;height:1px;
    background:var(--cyan);
    transform:scaleX(0);transform-origin:0 50%;
    transition:transform .2s var(--ease),background-color .2s var(--ease);
  }
  .nav-list a:hover::after{transform:scaleX(1)}
  .nav-list a[aria-current="page"]::after{transform:scaleX(1);background:var(--orange)}
}

@media (min-width:1180px){
  .brand-line{display:block;max-width:24ch}
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,104px);
  background:var(--blue);
  border-top:1px solid var(--line);
  color:var(--steel);
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(143,163,174,.075) 0 1px,transparent 1px 104px);
}
.site-footer::after{
  content:"";position:absolute;top:0;left:0;width:38%;height:2px;
  background:linear-gradient(90deg,var(--cyan),transparent);
  pointer-events:none;
}
.footer-inner{
  position:relative;
  max-width:var(--shell);margin:0 auto;
  padding:clamp(38px,5vw,68px) var(--pad) clamp(26px,4vw,46px);
  display:grid;gap:clamp(30px,4vw,54px);
  grid-template-columns:1fr;
}
.footer-brand{min-width:0}
.footer-note{
  margin-top:14px;max-width:30ch;
  font-size:13px;line-height:1.8;color:var(--steel);
}
.footer-heading{
  font-family:var(--font-mono);
  font-size:11px;font-weight:400;letter-spacing:.18em;text-transform:uppercase;
  color:var(--steel);
  padding-bottom:12px;margin-bottom:8px;
  border-bottom:1px solid var(--line-soft);
}
.zone-list{display:grid;grid-template-columns:1fr;gap:0}
.zone-list>li{border-bottom:1px solid var(--line-soft)}
.zone-list a{
  display:flex;align-items:center;gap:12px;
  padding:10px 0;
  font-size:14px;color:var(--paper-dim);
  transition:color .16s var(--ease),padding-left .16s var(--ease);
}
.zone-list a:hover{color:var(--cyan);padding-left:2px}
.zone-list a[aria-current="page"]{color:var(--cyan)}
.zone-code{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--orange);
  min-width:22px;
}
.contact-list{display:grid;gap:14px;padding-top:4px}
.contact-list dt{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  color:rgba(143,163,174,.8);
}
.contact-list dd{
  font-size:14px;color:var(--paper);line-height:1.6;
  word-break:break-word;
}
.footer-service{
  margin-top:20px;max-width:34ch;
  font-size:13px;line-height:1.8;color:var(--steel);
  padding-left:14px;border-left:1px solid var(--line-strong);
}
.footer-base{
  position:relative;
  max-width:var(--shell);margin:0 auto;
  padding:16px var(--pad) 26px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;align-items:center;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.05em;
  color:rgba(143,163,174,.86);
}
.footer-icp{color:var(--amber)}
.footer-copy{color:var(--steel)}

@media (min-width:560px){
  .zone-list{grid-template-columns:1fr 1fr;column-gap:26px}
}
@media (min-width:820px){
  .footer-inner{grid-template-columns:minmax(0,1fr) minmax(0,1.15fr)}
}
@media (min-width:1080px){
  .footer-inner{grid-template-columns:minmax(0,.95fr) minmax(0,1.15fr) minmax(0,1fr)}
}

/* ============ 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;
  }
  .reveal{opacity:1;transform:none}
  .scroll-progress{transition:none}
}