/* 雄安超互联 OPC联盟 · 共享样式表 */

@font-face {
  font-family: 'Fraunces Display';
  src: url('../fonts/Fraunces-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'JB Mono';
  src: url('../fonts/JetBrainsMono-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root{
  --bg: #FFF6F4;
  --bg-raised: #FFE7EC;
  --bg-raised-2: #FFD5E1;
  --ink: #33161F;
  --ink-soft: #7A4B58;
  --jade: #E6396C;
  --jade-strong: #B0234E;
  --amber: #FF7A59;
  --amber-ink: #3A0E0A;
  --mesh: #FF8FAE;
  --line: rgba(51,22,31,0.12);
  --line-strong: rgba(51,22,31,0.24);
  --seal: #E23744;
  --shadow: 0 18px 40px -20px rgba(178,35,78,0.35);
  --radius-s: 3px;
  --radius-m: 6px;
  --gradient-primary: linear-gradient(135deg, #FF5C93 0%, #FF7A59 100%);
  --gradient-cta: linear-gradient(135deg, #FF2E77 0%, #FF8A5B 100%);
  color-scheme: light;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg: #1A0E13;
    --bg-raised: #2A1620;
    --bg-raised-2: #3A1E2B;
    --ink: #FCEEF2;
    --ink-soft: #D9A9BB;
    --jade: #FF80AB;
    --jade-strong: #FF4FA0;
    --amber: #FF8F73;
    --amber-ink: #2A0D08;
    --mesh: #FFA6C9;
    --line: rgba(252,238,242,0.14);
    --line-strong: rgba(252,238,242,0.26);
    --seal: #FF5C6C;
    --shadow: 0 18px 44px -18px rgba(0,0,0,0.6);
    --gradient-primary: linear-gradient(135deg, #FF80AB 0%, #FF8F73 100%);
    --gradient-cta: linear-gradient(135deg, #FF4FA0 0%, #FF8F73 100%);
    color-scheme: dark;
  }
}
:root[data-theme="dark"]{
  --bg: #1A0E13;
  --bg-raised: #2A1620;
  --bg-raised-2: #3A1E2B;
  --ink: #FCEEF2;
  --ink-soft: #D9A9BB;
  --jade: #FF80AB;
  --jade-strong: #FF4FA0;
  --amber: #FF8F73;
  --amber-ink: #2A0D08;
  --mesh: #FFA6C9;
  --line: rgba(252,238,242,0.14);
  --line-strong: rgba(252,238,242,0.26);
  --seal: #FF5C6C;
  --shadow: 0 18px 44px -18px rgba(0,0,0,0.6);
  --gradient-primary: linear-gradient(135deg, #FF80AB 0%, #FF8F73 100%);
  --gradient-cta: linear-gradient(135deg, #FF4FA0 0%, #FF8F73 100%);
  color-scheme: dark;
}
:root[data-theme="light"]{
  --bg: #FFF6F4;
  --bg-raised: #FFE7EC;
  --bg-raised-2: #FFD5E1;
  --ink: #33161F;
  --ink-soft: #7A4B58;
  --jade: #E6396C;
  --jade-strong: #B0234E;
  --amber: #FF7A59;
  --amber-ink: #3A0E0A;
  --mesh: #FF8FAE;
  --line: rgba(51,22,31,0.12);
  --line-strong: rgba(51,22,31,0.24);
  --seal: #E23744;
  --shadow: 0 18px 40px -20px rgba(178,35,78,0.35);
  --gradient-primary: linear-gradient(135deg, #FF5C93 0%, #FF7A59 100%);
  --gradient-cta: linear-gradient(135deg, #FF2E77 0%, #FF8A5B 100%);
  color-scheme: light;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,sans-serif;
  line-height:1.6;
  overflow-x:hidden;
  transition:background .3s ease,color .3s ease;
}
::selection{ background:var(--amber); color:var(--amber-ink); }

.lat{ font-family:'Fraunces Display', Georgia, 'Times New Roman', serif; }
.mono{ font-family:'JB Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-variant-numeric: tabular-nums; }

a{ color:inherit; }
img,svg,canvas{ display:block; max-width:100%; }

.wrap{ max-width:1180px; margin:0 auto; padding:0 28px; }

.blueprint-grid{
  background-image:
    repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px calc(100%/12)),
    repeating-linear-gradient(0deg, var(--line) 0 1px, transparent 1px 64px);
  background-position: center top;
}

/* ---------- nav ---------- */
header.site{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 0;
}
.brand{ display:flex; align-items:center; gap:10px; text-decoration:none; }
.brand-mark{
  width:34px; height:34px; border-radius:50%;
  background: conic-gradient(from 210deg, var(--jade), var(--mesh), var(--amber), var(--jade));
  display:flex; align-items:center; justify-content:center;
  flex:none;
}
.brand-mark span{
  width:24px; height:24px; border-radius:50%; background:var(--bg);
  display:flex; align-items:center; justify-content:center;
  font-size:10px; letter-spacing:.02em; color:var(--ink); font-weight:700;
}
.brand-name{ font-size:17px; font-weight:700; letter-spacing:.02em; }
.brand-sub{ font-size:11px; color:var(--ink-soft); letter-spacing:.12em; text-transform:uppercase; }

nav.links{ display:flex; align-items:center; gap:26px; }
nav.links a{
  font-size:14.5px; text-decoration:none; color:var(--ink-soft);
  position:relative; padding:4px 0;
}
nav.links a:hover, nav.links a[aria-current="page"]{ color:var(--ink); }
nav.links a.cta{
  color:#fff; background:var(--gradient-primary); padding:9px 18px;
  border-radius:999px; font-weight:600; font-size:13.5px;
}
nav.links a.cta:hover{ filter:brightness(1.06); }
.navToggle{ display:none; background:none; border:1px solid var(--line-strong); border-radius:8px; width:38px; height:38px; align-items:center; justify-content:center; color:var(--ink); }

/* ---------- hero ---------- */
.hero{ position:relative; overflow:hidden; border-bottom:1px solid var(--line); }
.hero-canvas-wrap{ position:absolute; inset:0; opacity:.9; }
.hero-canvas-wrap canvas{ width:100%; height:100%; }
.hero-inner{ position:relative; padding:88px 0 76px; }
.page-hero-inner{ position:relative; padding:72px 0 56px; }
.eyebrow{
  display:inline-flex; align-items:center; gap:10px;
  font-size:12.5px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--jade); margin-bottom:22px;
}
.eyebrow::before{ content:""; width:22px; height:1px; background:var(--jade); }
h1.hero-title{
  font-size:clamp(34px,5.4vw,60px); line-height:1.16; font-weight:800;
  letter-spacing:-.01em; margin:0 0 22px; max-width:15ch;
  text-wrap: balance;
}
h1.page-title{
  font-size:clamp(30px,4.6vw,48px); line-height:1.18; font-weight:800;
  letter-spacing:-.01em; margin:0 0 18px; max-width:18ch; text-wrap:balance;
}
h1.hero-title em{ font-style:normal; color:var(--jade); }
.hero-sub{
  font-size:17px; color:var(--ink-soft); max-width:620px; margin:0 0 36px;
}
.page-sub{ font-size:16px; color:var(--ink-soft); max-width:640px; margin:0; }
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom:56px; }
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:13px 24px; border-radius:999px; font-size:14.5px; font-weight:600;
  text-decoration:none; border:1px solid transparent; cursor:pointer;
  font-family:inherit;
}
.btn-primary{ background:var(--gradient-primary); color:#fff; }
.btn-primary:hover{ filter:brightness(1.06); }
.btn-ghost{ border-color:var(--line-strong); color:var(--ink); background:transparent; }
.btn-ghost:hover{ border-color:var(--ink); }

.stat-strip{
  display:grid; grid-template-columns:repeat(4,1fr); gap:0;
  border-top:1px solid var(--line); padding-top:28px;
}
.stat{ padding-right:20px; border-right:1px solid var(--line); }
.stat:last-child{ border-right:none; }
.stat b{ display:block; font-size:clamp(22px,2.6vw,32px); font-weight:700; margin-bottom:6px; }
.stat span{ font-size:12.5px; color:var(--ink-soft); line-height:1.5; display:block; }
.stat-note{ font-size:11.5px; color:var(--ink-soft); margin-top:18px; opacity:.75; }

/* ---------- section shell ---------- */
section{ padding:88px 0; border-bottom:1px solid var(--line); position:relative; }
section.tight{ padding:64px 0; }
.section-head{ max-width:640px; margin-bottom:52px; }
.section-head h2{ font-size:clamp(24px,3vw,34px); margin:10px 0 14px; font-weight:800; text-wrap:balance; }
.section-head p{ color:var(--ink-soft); font-size:15.5px; margin:0; }
.kicker{
  font-size:12px; letter-spacing:.16em; text-transform:uppercase; color:var(--ink-soft);
  display:flex; align-items:center; gap:10px;
}
.kicker::before{ content:""; width:8px; height:8px; border-radius:50%; background:var(--amber); flex:none; }

/* why-now / body copy */
.why-copy{ max-width:760px; font-size:15.5px; color:var(--ink-soft); margin-bottom:44px; }
.why-copy strong{ color:var(--ink); font-weight:700; }
.prose{ max-width:74ch; font-size:15.5px; color:var(--ink-soft); }
.prose h3{ color:var(--ink); font-size:20px; margin:36px 0 12px; font-weight:700; }
.prose p{ margin:0 0 16px; }
.prose strong{ color:var(--ink); }
.prose ul{ padding-left:20px; margin:0 0 16px; }
.prose li{ margin-bottom:8px; }

/* pillars w/ seal marks */
.pillars{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); }
.pillar{ background:var(--bg); padding:36px 32px; }
.seal{
  width:52px; height:52px; border:2px solid var(--seal); border-radius:10px;
  display:flex; align-items:center; justify-content:center; transform:rotate(-3deg);
  margin-bottom:22px; position:relative;
}
.seal::after{
  content:""; position:absolute; inset:5px; border:1px solid var(--seal); border-radius:6px; opacity:.55;
}
.seal span{ font-size:20px; font-weight:700; color:var(--seal); }
.pillar h3{ font-size:19px; margin:0 0 6px; font-weight:700; }
.pillar .tag{ font-size:11.5px; color:var(--jade); letter-spacing:.1em; margin-bottom:14px; display:block; }
.pillar p{ font-size:14.5px; color:var(--ink-soft); margin:0; }

/* benefits grid */
.benefits{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.benefit{
  background:var(--bg-raised); border:1px solid var(--line); border-radius:var(--radius-m);
  padding:26px 24px; display:flex; gap:16px; align-items:flex-start;
}
.glyph{ flex:none; width:38px; height:38px; }
.benefit h4{ font-size:15.5px; margin:2px 0 6px; font-weight:700; }
.benefit p{ font-size:13.5px; color:var(--ink-soft); margin:0; }

/* policy blueprint cards */
.policy-list{ display:flex; flex-direction:column; }
.policy-row{
  display:grid; grid-template-columns:120px 1fr; gap:26px;
  padding:26px 0; border-top:1px solid var(--line);
  align-items:baseline;
}
.policy-row:last-child{ border-bottom:1px solid var(--line); }
.policy-tag{ font-size:12px; color:var(--jade); letter-spacing:.08em; }
.policy-row h4{ font-size:16.5px; margin:0 0 8px; font-weight:700; }
.policy-row p{ font-size:14px; color:var(--ink-soft); margin:0; max-width:60ch; }
.policy-disclaimer{ font-size:12px; color:var(--ink-soft); margin-top:22px; opacity:.75; }

/* ecosystem recruiting */
.eco-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.eco-slot{
  border:1.5px dashed var(--line-strong); border-radius:var(--radius-m);
  padding:26px 20px; text-align:center; color:var(--ink-soft);
}
.eco-slot .plus{
  width:30px; height:30px; margin:0 auto 14px; border-radius:50%;
  border:1px solid var(--line-strong); display:flex; align-items:center; justify-content:center;
  font-size:15px; color:var(--jade);
}
.eco-slot b{ display:block; color:var(--ink); font-size:14.5px; margin-bottom:4px; font-weight:700; }
.eco-slot span{ font-size:12px; }

/* news */
.news-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.news-card{
  border:1px solid var(--line); border-radius:var(--radius-m); overflow:hidden; background:var(--bg-raised);
  display:flex; flex-direction:column;
}
.news-thumb{
  height:120px; position:relative; overflow:hidden;
  background: linear-gradient(135deg, var(--jade), var(--bg-raised-2));
}
.news-thumb canvas{ position:absolute; inset:0; width:100%; height:100%; opacity:.7; }
.news-body{ padding:20px; }
.news-date{ font-size:11.5px; color:var(--ink-soft); margin-bottom:8px; }
.news-card h4{ font-size:15px; margin:0 0 8px; font-weight:700; line-height:1.4; }
.news-card p{ font-size:13px; color:var(--ink-soft); margin:0; }
.draft-badge{
  display:inline-block; font-size:10.5px; padding:2px 8px; border-radius:999px;
  border:1px solid var(--line-strong); color:var(--ink-soft); margin-left:8px; letter-spacing:.04em;
}

/* cta */
.cta-section{ border-bottom:none; }
.cta-box{
  background:var(--gradient-cta); color:#FFF3F0;
  border-radius:14px; padding:64px 56px; position:relative; overflow:hidden;
}
.cta-box h2{ font-size:clamp(26px,3.6vw,40px); margin:0 0 16px; font-weight:800; max-width:16ch; text-wrap:balance; }
.cta-box p{ font-size:15.5px; opacity:.85; max-width:52ch; margin:0 0 32px; }
.cta-actions{ display:flex; gap:14px; flex-wrap:wrap; }
.btn-on-jade{ background:#fff; color:var(--jade-strong); }
.btn-on-jade-ghost{ border:1px solid rgba(255,255,255,0.5); color:inherit; }
.cta-mesh{ position:absolute; inset:0; opacity:.25; pointer-events:none; }

/* forms */
.form-card{
  background:var(--bg-raised); border:1px solid var(--line); border-radius:var(--radius-m);
  padding:40px; max-width:640px;
}
.field{ margin-bottom:20px; }
.field label{ display:block; font-size:13.5px; font-weight:600; margin-bottom:8px; }
.field .req{ color:var(--seal); }
.field input, .field select, .field textarea{
  width:100%; padding:12px 14px; border-radius:var(--radius-s); border:1px solid var(--line-strong);
  background:var(--bg); color:var(--ink); font-size:14.5px; font-family:inherit;
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline:2px solid var(--jade); outline-offset:1px; border-color:var(--jade);
}
.field-hint{ font-size:12px; color:var(--ink-soft); margin-top:6px; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-note{ font-size:12.5px; color:var(--ink-soft); margin-top:18px; line-height:1.6; }
.checklist{ display:flex; flex-direction:column; gap:14px; }
.checklist .step{ display:flex; gap:14px; align-items:flex-start; }
.checklist .num{
  flex:none; width:30px; height:30px; border-radius:50%; border:1px solid var(--line-strong);
  display:flex; align-items:center; justify-content:center; font-size:12.5px;
}
.checklist h4{ margin:0 0 4px; font-size:15px; font-weight:700; }
.checklist p{ margin:0; font-size:13.5px; color:var(--ink-soft); }
.join-grid{ display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:start; }

/* org chart / about */
.org-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.org-card{
  border:1px solid var(--line); border-radius:var(--radius-m); padding:20px; background:var(--bg-raised);
  text-align:center;
}
.org-card b{ display:block; font-size:14px; margin-bottom:4px; }
.org-card span{ font-size:12px; color:var(--ink-soft); }
.timeline{ border-left:2px solid var(--line-strong); padding-left:26px; display:flex; flex-direction:column; gap:28px; margin-left:6px; }
.timeline .item{ position:relative; }
.timeline .item::before{ content:""; position:absolute; left:-32px; top:4px; width:10px; height:10px; border-radius:50%; background:var(--amber); }
.timeline .date{ font-size:12px; color:var(--jade); margin-bottom:4px; }
.timeline h4{ margin:0 0 6px; font-size:15.5px; font-weight:700; }
.timeline p{ margin:0; font-size:13.5px; color:var(--ink-soft); max-width:60ch; }

/* footer */
footer{ padding:60px 0 32px; }
.foot-top{ display:grid; grid-template-columns:1.4fr repeat(3,1fr); gap:40px; margin-bottom:48px; }
.foot-brand p{ font-size:13.5px; color:var(--ink-soft); max-width:32ch; margin:14px 0 0; }
.foot-col h5{ font-size:12px; letter-spacing:.08em; text-transform:uppercase; color:var(--ink-soft); margin:0 0 16px; }
.foot-col a{ display:block; font-size:14px; text-decoration:none; color:var(--ink); margin-bottom:11px; }
.foot-col a:hover{ color:var(--jade); }
.foot-bottom{
  border-top:1px solid var(--line); padding-top:22px;
  display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap;
  font-size:12px; color:var(--ink-soft);
}
.disclaimer{
  font-size:11.5px; color:var(--ink-soft); opacity:.7; max-width:900px; margin-top:14px; line-height:1.6;
}
.proposal-badge{
  position:fixed;bottom:16px;right:16px;z-index:60;background:var(--ink);color:var(--bg);
  font-size:11px;letter-spacing:.06em;padding:8px 14px;border-radius:999px;opacity:.82;
  font-family:'JB Mono',monospace; text-decoration:none;
}

@media (max-width: 880px){
  nav.links{ display:none; }
  .navToggle{ display:flex; }
  .stat-strip{ grid-template-columns:repeat(2,1fr); row-gap:24px; }
  .stat:nth-child(2n){ border-right:none; }
  .pillars{ grid-template-columns:1fr; }
  .benefits{ grid-template-columns:1fr 1fr; }
  .policy-row{ grid-template-columns:1fr; gap:8px; }
  .eco-grid{ grid-template-columns:1fr 1fr; }
  .news-grid{ grid-template-columns:1fr; }
  .foot-top{ grid-template-columns:1fr 1fr; }
  .cta-box{ padding:44px 28px; }
  .org-grid{ grid-template-columns:1fr 1fr; }
  .join-grid{ grid-template-columns:1fr; }
  .field-row{ grid-template-columns:1fr; }
}
@media (max-width: 560px){
  .benefits{ grid-template-columns:1fr; }
  .eco-grid{ grid-template-columns:1fr; }
  .foot-top{ grid-template-columns:1fr; }
  .stat-strip{ grid-template-columns:1fr 1fr; }
  .org-grid{ grid-template-columns:1fr; }
  .form-card{ padding:26px; }
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important; }
}