/* ============================================================
   万博全站 · 共享样式表 /assets/site.css
   隐喻：墨绿档案底 + 鎏金刻度 + 纸白台账卡
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root{
  --green-900:#0C2A24;
  --green-800:#123A31;
  --green-700:#17483D;
  --gold:#C9A227;
  --gold-soft:#E7CE7C;
  --gold-ink:#8A6D14;
  --red:#7A1F2B;
  --blue:#8FA3B0;
  --paper:#F4F1E8;
  --ink:#06120F;
  --mint:#2FD3B0;
  --text:#DEE5DD;
  --text-dim:#8FA3B0;
  --paper-dim:#5C6B66;
  --line:rgba(201,162,39,.26);
  --line-soft:rgba(143,163,176,.20);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Songti,Georgia,serif;
  --sans:"Noto Sans SC","Source Han Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --shell:min(1240px,92vw);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --dur:280ms;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow:0 22px 48px -28px rgba(0,0,0,.85);
  --shadow-paper:0 1px 0 rgba(6,18,15,.06),0 20px 44px -32px rgba(0,0,0,.9);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:112px;}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd,table{margin:0;}
ul,ol{padding:0;list-style:none;}
img,svg,video{display:block;max-width:100%;height:auto;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--gold-soft);outline-offset:3px;border-radius:4px;}

/* ---------- 3. 页面基色 ---------- */
body{
  min-height:100vh;
  padding-block-start:clamp(88px,9vw,116px);
  background-color:var(--green-900);
  background-image:
    linear-gradient(90deg,rgba(143,163,176,.055) 1px,transparent 1px),
    linear-gradient(0deg,rgba(143,163,176,.04) 1px,transparent 1px);
  background-size:96px 96px;
  color:var(--text);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.75;
  overflow-x:hidden;
}

/* ---------- 4. 标题与正文节奏 ---------- */
h1,h2,h3,h4,h5{font-family:var(--serif);font-weight:600;line-height:1.28;letter-spacing:-.01em;color:var(--paper);}
h1{font-size:clamp(34px,5.2vw,56px);font-weight:700;}
h2{font-size:clamp(24px,3.2vw,30px);}
h3{font-size:18px;}
h4{font-size:16.5px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.03em;}
.text-dim{color:var(--text-dim);}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;}
.link{border-bottom:1px solid rgba(231,206,124,.4);color:var(--gold-soft);}
.link:hover{border-bottom-color:var(--gold-soft);}

.skip-link{
  position:fixed;top:8px;left:50%;z-index:200;
  transform:translate(-50%,-160%);
  padding:10px 20px;border-radius:var(--r-pill);
  background:var(--gold);color:var(--ink);
  font-size:14px;font-weight:600;
  transition:transform 200ms var(--ease);
}
.skip-link:focus{transform:translate(-50%,0);}

/* ---------- 5. 布局骨架 ---------- */
.container{width:var(--shell);margin-inline:auto;}
.container--narrow{width:min(820px,92vw);margin-inline:auto;}
.container--wide{width:min(1440px,94vw);margin-inline:auto;}
.section{padding-block:clamp(40px,6vw,88px);}
.section--tight{padding-block:clamp(22px,3.4vw,48px);}
.section--raised{background:var(--green-800);}
.section--paper{background:var(--paper);color:var(--ink);}
.section--paper .section-title,.section--paper h2,.section--paper h3{color:var(--ink);}
.section--paper .section-note,.section--paper .lede{color:var(--paper-dim);}
.section--paper .eyebrow{color:var(--gold-ink);}
.section--paper .eyebrow::before{background:var(--gold-ink);}
.section--paper .rule{background:rgba(6,18,15,.12);}
.section--paper .card{background:#FBFAF4;border-color:rgba(6,18,15,.14);color:var(--ink);}
.section--paper .card-title{color:var(--ink);}
.section--paper .card-meta{color:var(--paper-dim);}
.section--paper .stat-value{color:var(--gold-ink);}
.section--paper .stat-label{color:var(--paper-dim);}

.grid{display:grid;gap:clamp(16px,2.2vw,28px);}
.grid--5-7{grid-template-columns:5fr 7fr;}
.grid--4-8{grid-template-columns:4fr 8fr;}
.grid--7-5{grid-template-columns:7fr 5fr;}
.grid--halves{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--thirds{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));}
.stack{display:flex;flex-direction:column;gap:14px;}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.rule{height:1px;border:0;background:var(--line-soft);}
.rule--gold{height:1px;border:0;background:linear-gradient(90deg,var(--gold),rgba(201,162,39,0));}

/* ---------- 6. 编辑感文本块 ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:11.5px;letter-spacing:.2em;color:var(--gold);text-transform:uppercase;}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--gold);}
.section-head{display:flex;flex-direction:column;gap:12px;margin-bottom:clamp(20px,3vw,36px);max-width:72ch;}
.section-title{font-family:var(--serif);font-size:clamp(24px,3.2vw,32px);color:var(--paper);}
.section-note{font-size:15px;color:var(--text-dim);}
.lede{font-size:clamp(16px,1.5vw,18px);line-height:1.72;color:#C7D2CB;max-width:64ch;}
.prose{font-size:16.5px;line-height:1.82;color:var(--text);}
.prose p{margin-bottom:1em;max-width:70ch;}
.prose h3{margin:1.6em 0 .5em;}
.prose ul,.prose ol{margin:0 0 1em;padding-left:1.25em;}
.prose ul{list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin-bottom:.45em;}
.prose a{color:var(--gold-soft);border-bottom:1px solid rgba(231,206,124,.35);}
.prose strong{color:var(--paper);}

/* ---------- 7. 徽标 / 按钮 / 胶囊 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line-soft);color:var(--text-dim);
  font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;white-space:nowrap;
}
.badge--version{color:var(--gold-soft);border-color:var(--line);background:rgba(201,162,39,.08);}
.badge--version::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 3px rgba(201,162,39,.18);}
.badge--date{color:var(--text-dim);}
.badge--alert{color:#F2C9D0;border-color:rgba(122,31,43,.9);background:rgba(122,31,43,.35);}
.badge--mint{color:var(--mint);border-color:rgba(47,211,176,.42);background:rgba(47,211,176,.10);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:9px 18px;border-radius:var(--r-pill);
  border:1px solid transparent;font-size:14px;font-weight:600;letter-spacing:.02em;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn--gold{background:linear-gradient(180deg,var(--gold-soft),var(--gold));color:var(--ink);box-shadow:0 10px 24px -14px rgba(201,162,39,.95);}
.btn--gold:hover{transform:translateY(-1px);box-shadow:0 16px 28px -12px rgba(201,162,39,.85);}
.btn--ghost{background:transparent;color:var(--gold-soft);border-color:var(--line);}
.btn--ghost:hover{background:rgba(201,162,39,.12);border-color:var(--gold-soft);}
.btn--mint{background:var(--mint);color:var(--ink);}
.btn--paper{background:var(--paper);color:var(--ink);}
.btn--sm{padding:6px 14px;font-size:13px;}

/* ---------- 8. 悬浮胶囊页头 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  padding:clamp(10px,1.6vw,18px) clamp(12px,3vw,28px) 0;
  pointer-events:none;
}
.header-island{
  position:relative;
  pointer-events:auto;
  width:var(--shell);
  margin-inline:auto;
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:clamp(10px,1.8vw,24px);
  padding:10px clamp(12px,1.8vw,20px);
  background:rgba(12,42,36,.86);
  -webkit-backdrop-filter:blur(14px) saturate(1.25);
  backdrop-filter:blur(14px) saturate(1.25);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--shadow);
  transition:width var(--dur) var(--ease),padding var(--dur) var(--ease),background var(--dur) var(--ease);
}
.brand{display:inline-flex;align-items:center;gap:10px;min-width:0;}
.brand:hover .brand-name{color:var(--gold-soft);}
.brand-mark{
  display:grid;place-items:center;flex:none;
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(150deg,var(--green-700),var(--green-900));
  border:1px solid var(--line);
  color:var(--gold-soft);font-family:var(--serif);font-size:19px;font-weight:700;
  box-shadow:inset 0 0 0 1px rgba(201,162,39,.12);
}
.brand-mark--lg{width:54px;height:54px;border-radius:15px;font-size:25px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0;}
.brand-name{font-family:var(--serif);font-size:16px;font-weight:600;color:var(--paper);letter-spacing:.05em;transition:color var(--dur) var(--ease);}
.brand-note{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:var(--text-dim);}

.capsule-nav{display:flex;align-items:center;justify-content:center;gap:6px;min-width:0;}
.nav-list{display:flex;align-items:center;gap:2px;}
.nav-link{
  display:inline-flex;align-items:center;
  padding:8px 13px;border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:14.5px;color:var(--text);white-space:nowrap;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-link:hover{color:var(--gold-soft);background:rgba(201,162,39,.10);border-color:var(--line);}
.nav-link[aria-current="page"]{
  color:var(--ink);font-weight:600;
  background:linear-gradient(180deg,var(--gold-soft),var(--gold));
  border-color:var(--gold-soft);
  box-shadow:0 6px 18px -10px rgba(201,162,39,.9);
}
.nav-utility{display:flex;align-items:center;gap:2px;padding-left:10px;margin-left:6px;border-left:1px solid var(--line-soft);}
.utility-link{padding:6px 9px;border-radius:var(--r-pill);font-size:13px;color:var(--text-dim);transition:color var(--dur) var(--ease);}
.utility-link:hover{color:var(--gold-soft);}

.header-meta{display:flex;align-items:center;gap:8px;justify-self:end;}
.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--paper);
  background:rgba(244,241,232,.05);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-toggle:hover{color:var(--gold-soft);border-color:var(--gold-soft);}
.nav-toggle-text{font-size:13.5px;letter-spacing:.06em;}
.nav-toggle-bars{position:relative;display:block;flex:none;width:16px;height:10px;}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;right:0;height:1.5px;border-radius:2px;background:currentColor;
  transition:transform var(--dur) var(--ease),top var(--dur) var(--ease);
}
.nav-toggle-bars::before{top:1px;}
.nav-toggle-bars::after{top:8px;}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{top:4.5px;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{top:4.5px;transform:rotate(-45deg);}

.progress-rail{position:fixed;top:0;left:0;right:0;height:2px;z-index:95;pointer-events:none;}
.progress-fill{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--mint),var(--gold));transition:width 120ms linear;}

@keyframes navIn{from{opacity:0;transform:translateY(-10px);}to{opacity:1;transform:translateY(0);}}

/* 收起为版本徽标 */
.site-header.is-condensed{padding-top:clamp(8px,1.2vw,12px);}
.site-header.is-condensed .header-island{width:min(640px,92vw);padding-block:7px;background:rgba(9,32,28,.94);}
.site-header.is-condensed .brand-note,
.site-header.is-condensed .badge--date{display:none;}
.site-header.is-condensed .nav-toggle{display:inline-flex;}

/* ---------- 9. 页脚（抽屉式台账） ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(40px,6vw,96px);
  background:
    radial-gradient(120% 90% at 12% 0%,rgba(23,72,61,.95),rgba(12,42,36,0) 62%),
    var(--green-800);
  border-top:1px solid var(--line);
}
.footer-tick{
  height:12px;
  background-image:repeating-linear-gradient(90deg,rgba(201,162,39,.5) 0 1px,transparent 1px 16px);
  border-bottom:1px solid rgba(201,162,39,.16);
  opacity:.7;
}
.footer-shell{width:var(--shell);margin-inline:auto;padding:clamp(32px,5vw,64px) 0 26px;}
.footer-top{display:grid;grid-template-columns:minmax(220px,1fr) 2.1fr;gap:clamp(28px,4vw,64px);}
.footer-brand{display:flex;flex-direction:column;gap:12px;align-items:flex-start;}
.footer-brand-name{font-family:var(--serif);font-size:22px;letter-spacing:.06em;color:var(--paper);}
.footer-brand-note{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--text-dim);}
.footer-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px);}
.footer-col{display:flex;flex-direction:column;}
.footer-col-title{
  padding-bottom:10px;margin-bottom:14px;
  border-bottom:1px solid var(--line-soft);
  font-family:var(--mono);font-weight:400;
  font-size:11.5px;letter-spacing:.18em;color:var(--gold);
}
.footer-links{display:flex;flex-direction:column;gap:9px;}
.footer-link{width:fit-content;font-size:14.5px;color:var(--text);border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);}
.footer-link:hover{color:var(--gold-soft);border-bottom-color:var(--gold-soft);}
.contact-list{display:flex;flex-direction:column;gap:10px;margin-bottom:16px;}
.contact-item{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px;}
.contact-label{min-width:58px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--text-dim);}
.contact-value{font-family:var(--mono);font-size:14px;color:var(--paper);word-break:break-all;}
.copy-btn{
  padding:2px 10px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--gold-soft);
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.copy-btn:hover{background:rgba(201,162,39,.14);}
.copy-btn[data-copied="true"]{color:var(--mint);border-color:rgba(47,211,176,.5);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
  margin-top:clamp(28px,4vw,48px);padding-top:18px;
  border-top:1px solid var(--line-soft);
}
.footer-legal,.footer-icp{font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--text-dim);}

.to-top{
  position:fixed;right:clamp(14px,3vw,30px);bottom:clamp(14px,3vw,30px);z-index:80;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:var(--r-pill);
  background:rgba(12,42,36,.92);border:1px solid var(--line);color:var(--gold-soft);
  font-size:13px;letter-spacing:.04em;
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none;}

/* ---------- 10. 通用内容组件 ---------- */
.card{
  position:relative;
  padding:clamp(18px,2.2vw,26px);
  background:var(--green-800);
  border:1px solid var(--line-soft);
  border-radius:var(--r-md);
}
.card--paper{background:var(--paper);color:var(--ink);border-color:rgba(6,18,15,.14);box-shadow:var(--shadow-paper);}
.card--paper .card-title{color:var(--ink);}
.card--paper .card-meta{color:var(--paper-dim);}
.card--flat{background:transparent;}
.card-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:10px;}
.card-title{font-family:var(--serif);font-size:18px;color:var(--paper);}
.card-meta{font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:var(--text-dim);}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:var(--r-pill);
  border:1px solid var(--line-soft);background:rgba(244,241,232,.04);
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--text-dim);
}
.tag--gold{color:var(--gold-soft);border-color:var(--line);background:rgba(201,162,39,.10);}
.tag--red{color:#F2C9D0;border-color:rgba(122,31,43,.85);background:rgba(122,31,43,.35);}
.tag--mint{color:var(--mint);border-color:rgba(47,211,176,.45);background:rgba(47,211,176,.10);}
.tag--muted{color:var(--text-dim);}
.tag--ink{color:var(--ink);border-color:rgba(6,18,15,.18);background:rgba(6,18,15,.05);}

.stat{display:flex;flex-direction:column;gap:4px;}
.stat-value{font-family:var(--mono);font-size:clamp(26px,3.4vw,38px);line-height:1.05;letter-spacing:-.02em;color:var(--gold-soft);}
.stat-label{font-size:13px;color:var(--text-dim);}

.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--text-dim);}
.breadcrumb-link{color:var(--text-dim);}
.breadcrumb-link:hover{color:var(--gold-soft);}
.breadcrumb-sep{color:rgba(143,163,176,.5);}
.breadcrumb-current{color:var(--gold-soft);}

.timeline{position:relative;padding-left:28px;}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:1px;background:linear-gradient(180deg,var(--gold),rgba(201,162,39,.06));}
.timeline-item{position:relative;padding-bottom:clamp(20px,3vw,32px);}
.timeline-item::before{
  content:"";position:absolute;left:-28px;top:9px;
  width:11px;height:11px;border-radius:50%;
  background:var(--green-900);border:2px solid var(--gold);
  box-shadow:0 0 0 4px rgba(201,162,39,.12);
}
.timeline-item[data-active="true"]::before{background:var(--mint);border-color:var(--mint);animation:nodePulse 2.6s ease-in-out infinite;}
@keyframes nodePulse{0%,100%{box-shadow:0 0 0 4px rgba(47,211,176,.16);}50%{box-shadow:0 0 0 10px rgba(47,211,176,.04);}}
.timeline-date{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--gold);}
.timeline-title{font-family:var(--serif);font-size:18px;color:var(--paper);margin:4px 0 6px;}

.accordion{background:rgba(18,58,49,.62);border:1px solid var(--line-soft);border-radius:var(--r-md);overflow:hidden;}
.accordion + .accordion{margin-top:10px;}
.accordion summary{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:14px 18px;cursor:pointer;list-style:none;
  font-family:var(--serif);font-size:16.5px;color:var(--paper);
}
.accordion summary::-webkit-details-marker{display:none;}
.accordion summary::after{content:"＋";font-family:var(--mono);font-size:15px;color:var(--gold);}
.accordion[open] summary::after{content:"－";}
.accordion[open] summary{color:var(--gold-soft);border-bottom:1px solid var(--line-soft);}
.accordion-body{padding:14px 18px 18px;font-size:15.5px;line-height:1.78;color:#C6D0C9;}

.tabs{display:flex;flex-wrap:wrap;gap:6px;padding:5px;margin-bottom:18px;background:rgba(6,18,15,.35);border:1px solid var(--line-soft);border-radius:var(--r-pill);}
.tab{padding:7px 15px;border-radius:var(--r-pill);font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;color:var(--text-dim);transition:color var(--dur) var(--ease),background var(--dur) var(--ease);}
.tab:hover{color:var(--gold-soft);}
.tab[aria-selected="true"]{background:var(--paper);color:var(--ink);}
.tabpanel{display:none;}
.tabpanel[data-active="true"]{display:block;}

.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}
.chip{
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line-soft);font-size:13.5px;color:var(--text-dim);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.chip:hover{color:var(--gold-soft);border-color:var(--line);}
.chip[aria-pressed="true"]{background:rgba(201,162,39,.16);border-color:var(--gold);color:var(--gold-soft);}

.section-index{position:sticky;top:112px;display:flex;flex-direction:column;gap:2px;padding-left:14px;border-left:1px solid var(--line-soft);}
.index-link{
  margin-left:-16px;padding:6px 0 6px 14px;
  border-left:2px solid transparent;
  font-size:14px;color:var(--text-dim);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.index-link:hover{color:var(--gold-soft);}
.index-link[aria-current="true"]{color:var(--gold-soft);border-left-color:var(--gold);}

/* ---------- 11. 图像容器基础规则 ---------- */
.media{
  position:relative;overflow:hidden;
  border:1px solid var(--line-soft);border-radius:var(--r-md);
  background:linear-gradient(160deg,var(--green-800),var(--ink));
}
.media img{width:100%;height:100%;object-fit:cover;filter:saturate(.85) contrast(1.06) brightness(.9);}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(6,18,15,0) 42%,rgba(6,18,15,.58));
}
.media[data-label]::before{
  content:attr(data-label);
  position:absolute;inset:0;z-index:1;
  display:grid;place-items:center;
  padding:16px;text-align:center;
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:rgba(143,163,176,.72);
}
.media--16x9{aspect-ratio:16/9;}
.media--4x3{aspect-ratio:4/3;}
.media--1x1{aspect-ratio:1/1;}
.media--21x9{aspect-ratio:21/9;}
.media-frame{padding:10px;border:1px solid var(--line-soft);border-radius:var(--r-lg);background:rgba(244,241,232,.04);}
.media-caption{margin-top:10px;font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--text-dim);}

/* ---------- 12. 入场动效协议 ---------- */
.has-js [data-reveal]{opacity:0;transform:translateY(12px);transition:opacity 320ms var(--ease),transform 320ms var(--ease);}
.has-js [data-reveal].is-in{opacity:1;transform:none;}

/* ---------- 13. 响应式 ---------- */
@media (max-width:1280px){
  .badge--date{display:none;}
}
@media (max-width:1180px){
  .nav-utility{display:none;}
}
@media (max-width:1024px){
  .brand-note{display:none;}
  .footer-top{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1000px){
  .nav-link{padding:8px 10px;font-size:14px;}
}
@media (max-width:900px){
  .header-island{grid-template-columns:auto auto;justify-content:space-between;gap:10px;padding:8px 12px;}
  .nav-toggle{display:inline-flex;}
  .capsule-nav{display:none;}
  .capsule-nav[data-open]{
    display:flex;flex-direction:column;align-items:stretch;gap:2px;
    position:fixed;
    left:clamp(12px,3vw,28px);right:clamp(12px,3vw,28px);
    top:clamp(78px,14vw,100px);
    max-height:calc(100vh - 130px);
    max-height:calc(100dvh - 130px);
    overflow:auto;z-index:92;
    padding:12px;
    background:rgba(12,42,36,.99);
    border:1px solid var(--line);border-radius:var(--r-lg);
    box-shadow:var(--shadow);
    animation:navIn 240ms var(--ease) both;
  }
  .nav-list{counter-reset:nav;flex-direction:column;align-items:stretch;gap:2px;}
  .nav-link{width:100%;justify-content:flex-start;padding:12px 14px;font-size:16px;border-radius:var(--r-md);}
  .nav-link::before{
    counter-increment:nav;content:counter(nav,decimal-leading-zero);
    margin-right:12px;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;color:var(--text-dim);
  }
  .nav-link[aria-current="page"]{color:var(--gold-soft);background:rgba(201,162,39,.14);border-color:var(--line);box-shadow:none;}
  .nav-link[aria-current="page"]::before{color:var(--gold);}
  .nav-utility{display:flex;gap:14px;padding:12px 4px 2px;margin:8px 0 0;border-left:0;border-top:1px solid var(--line-soft);}
  .grid--5-7,.grid--4-8,.grid--7-5,.grid--halves,.grid--thirds{grid-template-columns:minmax(0,1fr);}
  .section-index{position:static;border-left:0;padding-left:0;flex-direction:row;flex-wrap:wrap;gap:8px;}
  .index-link{margin-left:0;padding:6px 12px;border:1px solid var(--line-soft);border-radius:var(--r-pill);}
  .index-link[aria-current="true"]{border-color:var(--gold);}
}
@media (max-width:640px){
  body{font-size:16px;padding-block-start:clamp(80px,18vw,96px);}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .to-top{right:14px;bottom:14px;padding:9px 14px;}
}
@media (min-width:901px){
  .site-header.is-condensed .capsule-nav{display:none;}
  .site-header.is-condensed .capsule-nav[data-open]{
    display:flex;flex-direction:column;align-items:stretch;gap:2px;
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    padding:12px;
    background:rgba(12,42,36,.99);
    border:1px solid var(--line);border-radius:var(--r-lg);
    box-shadow:var(--shadow);
    animation:navIn 240ms var(--ease) both;
  }
  .site-header.is-condensed .nav-list{flex-direction:column;align-items:stretch;gap:2px;}
  .site-header.is-condensed .nav-link{width:100%;justify-content:flex-start;padding:11px 14px;font-size:15px;}
  .site-header.is-condensed .nav-utility{display:flex;gap:14px;padding:10px 4px 2px;margin:8px 0 0;border-left:0;border-top:1px solid var(--line-soft);}
}

/* ---------- 14. 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;
  }
  .has-js [data-reveal]{opacity:1 !important;transform:none !important;}
  .timeline-item[data-active="true"]::before{animation:none;}
}