/* 聚野社区官网 · 手机优先；桌面端在底部 @media(min-width) 里放大 */
:root{
  --ink:#07080c;--ink-2:#0e1016;--ink-3:#161821;
  --paper:#ecebe7;--paper-ink:#16171d;--paper-dim:#5d5f68;--paper-line:#c9c7c6;
  --white:#f4f2ef;--dim:#a3a3ad;--faint:#6f707b;--line:rgba(244,242,239,.12);
  --ice:#9fd4ee;--rose:#efc3b8;--violet:#b3a7f0;
  --accent:var(--rose);
  --radius:18px;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","MiSans","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --gutter:20px;
}
body[data-theme="ice"]{--accent:var(--ice)}
body[data-theme="rose"]{--accent:var(--rose)}
body[data-theme="violet"]{--accent:var(--violet)}

*,*:before,*:after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--ink);color:var(--white);font-family:var(--sans);font-size:16px;line-height:1.7;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;min-width:320px;overflow-x:hidden}
a{color:inherit;text-decoration:none;-webkit-tap-highlight-color:transparent}
button{font:inherit;color:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}
h1,h2,h3,p{margin:0}
h1,h2,h3{font-weight:650;letter-spacing:0;line-height:1.28}
img,svg{display:block}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gutter)}
.en{font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase}

/* ── 顶栏：滚动后加毛玻璃 ── */
.site-head{position:fixed;top:0;left:0;right:0;z-index:50;transition:background .3s,border-color .3s,backdrop-filter .3s;border-bottom:1px solid transparent}
.site-head.is-scrolled{background:rgba(7,8,12,.72);-webkit-backdrop-filter:saturate(1.4) blur(16px);backdrop-filter:saturate(1.4) blur(16px);border-color:var(--line)}
.site-head .shell{height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:.06em;white-space:nowrap}
.brand-mark{width:28px;height:28px;flex:none;border-radius:7px}
.top-links{display:none}
.head-entry{display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 16px;border-radius:99px;font-size:14px;font-weight:600;
  background:rgba(244,242,239,.1);border:1px solid rgba(244,242,239,.22);transition:background .2s,color .2s}
.head-entry:hover{background:var(--white);color:var(--ink)}

/* ── 按钮 ── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:50px;padding:0 26px;border-radius:99px;font-size:15px;font-weight:650;
  transition:transform .2s,box-shadow .2s,background .2s;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,#fbf8f4 0%,#ece4ef 100%);color:#111218;box-shadow:0 10px 30px -10px rgba(214,196,236,.55)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -12px rgba(214,196,236,.7)}
.btn-ghost{background:transparent;border:1px solid rgba(244,242,239,.26);color:var(--white)}
.btn-ghost:hover{background:rgba(244,242,239,.08)}
.btn .arr{font-weight:400;transition:transform .2s}
.btn:hover .arr{transform:translate(2px,-2px)}

/* ── 首屏 ── */
.hero{position:relative;isolation:isolate;min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;
  padding:0 0 28px;background:radial-gradient(120% 70% at 50% 22%,#161626 0%,#0a0a12 52%,var(--ink) 80%);overflow:hidden}
.silk-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:-2;pointer-events:none}
.hero-shade{position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(0deg,var(--ink) 0%,rgba(7,8,12,.94) 26%,rgba(7,8,12,.45) 52%,rgba(7,8,12,0) 74%)}
.hero-inner{position:relative;padding-top:250px;padding-top:44vh;padding-top:clamp(250px,44svh,400px)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.14em}
.eyebrow:before{content:"";width:22px;height:1px;background:currentColor;opacity:.8}
.hero h1{font-size:clamp(32px,9vw,40px);font-weight:700;line-height:1.24;margin:14px 0 14px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,#e9e6fb,var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy{color:#c6c4cc;font-size:15px;line-height:1.8;max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-actions .btn{flex:1 1 140px}
.hero-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:30px;padding-top:16px;border-top:1px solid var(--line);color:var(--faint);font-size:12px}
.hero-foot .hint{display:flex;align-items:center;gap:8px}
.hero-foot .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{50%{opacity:.35}}
.motion{display:flex;align-items:center;gap:8px;background:none;border:0;padding:10px 0;color:var(--dim);font-size:12px;min-height:44px}
.motion i{position:relative;width:26px;height:14px;border:1px solid #8d8b95;border-radius:10px}
.motion i:after{content:"";position:absolute;top:2px;right:2px;width:8px;height:8px;border-radius:50%;background:var(--accent);transition:transform .2s}
.motion[aria-pressed="false"] i:after{transform:translateX(-12px);background:#8d8b95}

/* ── 通用区块 ── */
.section{padding:72px 0}
.section-head{margin-bottom:32px}
.section-no{display:block;color:var(--faint);margin-bottom:14px}
.section h2{font-size:clamp(26px,7vw,30px)}
.section-head p{color:var(--dim);font-size:15px;margin-top:12px;max-width:30em}
.paper{background:var(--paper);color:var(--paper-ink)}
.paper .section-no{color:#7c7d85}
.paper .section-head p{color:var(--paper-dim)}

/* 功能卡片 */
.cards{display:grid;grid-template-columns:1fr;gap:12px}
.card{position:relative;display:flex;flex-direction:column;gap:10px;padding:22px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.015));border:1px solid var(--line);overflow:hidden;
  transition:transform .25s,border-color .25s,background .25s}
.card:before{content:"";position:absolute;width:180px;height:180px;right:-60px;top:-80px;border-radius:50%;background:radial-gradient(circle,var(--c) 0%,transparent 68%);opacity:.18;transition:opacity .25s}
.card:hover{transform:translateY(-3px);border-color:rgba(244,242,239,.24)}
.card:hover:before{opacity:.32}
.card .ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--c)}
.card .ico svg{width:22px;height:22px}
.card h3{font-size:19px;display:flex;align-items:center;justify-content:space-between}
.card h3 .arr{color:var(--faint);font-weight:400;transition:transform .2s,color .2s}
.card:hover h3 .arr{color:var(--c);transform:translate(2px,-2px)}
.card p{color:var(--dim);font-size:14px;line-height:1.75}
.card .tag{color:var(--faint);font-size:10px}

/* 宣言（浅色） */
.manifesto{display:grid;gap:26px}
.manifesto h2{font-size:clamp(28px,7.6vw,34px);line-height:1.35}
.manifesto h2 span{color:#8b8892}
.manifesto p{font-size:15px;line-height:1.95;color:var(--paper-dim)}
.manifesto .rule{height:1px;background:var(--paper-line);margin:22px 0 12px}
.manifesto small{color:#7c7d85;font-size:12px;letter-spacing:.08em}

/* 三步进入 */
.steps{display:grid;gap:12px;counter-reset:s}
.step{display:grid;grid-template-columns:44px 1fr;gap:14px;align-items:start;padding:20px;border-radius:var(--radius);background:var(--ink-2);border:1px solid var(--line)}
.step .n{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-family:var(--mono);font-size:14px;color:var(--ink);background:var(--c,var(--accent))}
.step h3{font-size:17px}
.step p{color:var(--dim);font-size:14px;margin-top:4px}
.step code{font-family:var(--mono);font-size:13px;color:var(--white);background:rgba(255,255,255,.07);padding:2px 6px;border-radius:6px}

/* 收尾 */
.closing{position:relative;overflow:hidden;background:var(--ink-3);padding:80px 0}
.closing:before{content:"";position:absolute;width:520px;height:520px;right:-220px;top:-260px;border-radius:50%;border:1px solid rgba(213,191,225,.14);
  box-shadow:0 0 0 90px rgba(210,190,220,.02),0 0 0 190px rgba(210,190,220,.012);pointer-events:none}
.closing .shell{position:relative}
.closing h2{font-size:clamp(28px,8vw,36px);margin-top:16px}
.closing p{color:var(--dim);margin-top:10px;font-size:15px}
.closing .btn{margin-top:28px}

/* ── 子页 ── */
.detail-list{border-top:1px solid var(--paper-line)}
.detail-row{display:grid;grid-template-columns:36px 1fr;gap:12px;padding:22px 0;border-bottom:1px solid var(--paper-line)}
.detail-row .num{font-family:var(--mono);font-size:12px;color:#85868f;padding-top:6px}
.detail-row h3{font-size:19px}
.detail-row p{font-size:15px;color:var(--paper-dim);margin-top:4px}
.detail-aside h2{font-size:clamp(26px,7vw,32px);line-height:1.35}
.detail-aside p{color:var(--paper-dim);font-size:15px;margin-top:14px}
.detail-aside .btn{margin-top:24px}
.paper .btn-primary{background:var(--paper-ink);color:var(--paper);box-shadow:none}
.detail-grid{display:grid;gap:40px}

.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 0;font-size:16px;font-weight:600;cursor:pointer;min-height:44px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font-weight:300;font-size:22px;color:var(--accent);transition:transform .2s;flex:none}
.faq details[open] summary:after{transform:rotate(45deg)}
.faq details p{color:var(--dim);font-size:15px;padding:0 0 20px}

.next-links{display:flex;flex-wrap:wrap;gap:10px;padding-top:36px;padding-bottom:36px}
.next-links span{flex-basis:100%;color:var(--faint);font-size:12px;margin-bottom:4px}
.next-links a{padding:10px 18px;border-radius:99px;border:1px solid var(--line);font-size:14px;transition:background .2s,border-color .2s}
.next-links a:hover{background:rgba(255,255,255,.06);border-color:rgba(244,242,239,.26)}

/* ── 页脚 ── */
footer{background:#050609;border-top:1px solid var(--line);padding:40px 0 calc(28px + env(safe-area-inset-bottom));color:var(--faint);font-size:13px}
.foot-top{display:grid;gap:22px;padding-bottom:26px;border-bottom:1px solid var(--line)}
.foot-brand p{margin-top:8px;color:var(--faint)}
.foot-links{display:flex;flex-wrap:wrap;gap:10px 22px}
.foot-links a{color:var(--dim)}
.foot-links a:hover{color:var(--white)}
.foot-legal{display:flex;flex-wrap:wrap;gap:6px 18px;padding-top:20px;line-height:1.8}
.foot-legal a:hover{color:var(--white)}
.foot-legal img{display:inline-block;width:14px;height:14px;vertical-align:-2px;margin-right:4px}

/* ── 404 / 跳转页 ── */
.bare{min-height:100vh;min-height:100svh;display:flex;align-items:center;padding:100px 0 60px;background:radial-gradient(90% 60% at 50% 20%,#15151f,var(--ink) 70%)}
.bare h1{font-size:clamp(28px,8vw,40px);margin:14px 0 12px}
.bare p{color:var(--dim)}
.bare .hero-actions{margin-top:28px}
.guide{display:none;margin-top:26px;padding:22px;border-radius:var(--radius);border:1px solid rgba(239,195,184,.35);background:rgba(239,195,184,.06)}
.guide.show{display:block}
.guide h2{font-size:18px}
.guide ol{margin:12px 0 0;padding-left:20px;color:#d6d3da}
.guide li{margin:6px 0}
.guide .copy-ok{color:var(--rose);font-size:13px;margin-top:10px;min-height:1.2em}
.guide-arrow{position:fixed;top:8px;right:18px;z-index:60;display:none;color:var(--rose);font-size:13px;text-align:right;line-height:1.3}
.guide-arrow svg{width:56px;height:56px;margin-left:auto}
.guide-arrow.show{display:block}

/* ── 进场动画 ── */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn,.card,.hero-foot .dot{transition:none;animation:none}
}

/* ── 平板 / 桌面 ── */
@media (min-width:720px){
  :root{--gutter:40px}
  .site-head .shell{height:72px}
  .top-links{display:flex;gap:30px;font-size:14px;color:#c4c3ca}
  .top-links a{position:relative;padding:6px 0}
  .top-links a:hover,.top-links a[aria-current="page"]{color:#fff}
  .top-links a[aria-current="page"]:after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--accent)}
  .hero{justify-content:center;padding:0}
  .hero-shade{background:linear-gradient(90deg,var(--ink) 0%,rgba(7,8,12,.92) 30%,rgba(7,8,12,.35) 58%,rgba(7,8,12,0) 80%),linear-gradient(0deg,var(--ink) 0%,transparent 22%)}
  .hero-inner{position:static;padding:120px var(--gutter) 150px}
  .hero h1{font-size:clamp(44px,5.4vw,72px);max-width:11em}
  .hero-copy{font-size:17px;max-width:30em}
  .hero-actions .btn{flex:0 0 auto}
  .hero-foot{position:absolute;bottom:0;margin:0;padding:0;height:72px;
    left:max(var(--gutter),calc((100% - 1200px)/2 + var(--gutter)));right:max(var(--gutter),calc((100% - 1200px)/2 + var(--gutter)))}
  .section{padding:110px 0}
  .section h2{font-size:clamp(32px,3.6vw,46px)}
  .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:44px}
  .section-head p{margin:0;max-width:22em}
  .cards{grid-template-columns:repeat(2,1fr);gap:16px}
  .card{padding:30px;min-height:220px}
  .card h3{font-size:22px}
  .manifesto{grid-template-columns:1.1fr .9fr;gap:8vw;align-items:end}
  .manifesto h2{font-size:clamp(36px,4vw,54px)}
  .steps{grid-template-columns:repeat(3,1fr);gap:16px}
  .step{grid-template-columns:1fr;padding:28px}
  .closing{padding:110px 0}
  .closing .shell{display:flex;justify-content:space-between;align-items:flex-end;gap:40px}
  .closing h2{font-size:clamp(34px,4vw,52px)}
  .detail-grid{grid-template-columns:.85fr 1.15fr;gap:8vw}
  .detail-aside{position:sticky;top:110px;align-self:start}
  .detail-row{grid-template-columns:56px 1fr;padding:28px 0}
  .detail-row h3{font-size:22px}
  .faq-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:8vw}
  .foot-top{grid-template-columns:1fr auto;align-items:start}
  .guide-arrow{display:none!important}
}
@media (min-width:1080px){
  .cards{grid-template-columns:repeat(4,1fr)}
  .card{min-height:260px}
}