/* ============================================================
   UDID Station · iOS Liquid Glass UI
   单色基底 + 细腻几何装饰，不用彩色光效；主题色由后台配置注入。
   ============================================================ */
:root{
  --accent:#3B6EF6;
  --accent-2:#7B9BFF;
  --ink:#18213a;
  --ink-2:#465272;
  --muted:#8590a8;
  --line:rgba(35,55,100,.09);
  --glass:rgba(255,255,255,.66);
  --glass-strong:rgba(255,255,255,.82);
  --shadow:0 22px 56px rgba(25,44,88,.09), 0 2px 8px rgba(25,44,88,.04);
  --shadow-soft:0 10px 26px rgba(25,44,88,.07);
  --radius:28px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body.ud-body{
  margin:0;min-height:100vh;color:var(--ink);
  font:15px/1.65 -apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","PingFang SC","Helvetica Neue","Microsoft YaHei",sans-serif;
  background:#eef2f9;
  background-image:
    linear-gradient(180deg,rgba(255,255,255,.55),rgba(255,255,255,0) 42%),
    radial-gradient(circle at 1px 1px,rgba(58,84,140,.075) 1px,transparent 0);
  background-size:auto,24px 24px;
  -webkit-font-smoothing:antialiased;
}
/* 背景装饰：单色线条 / 圆环，无彩色光斑 */
.bg-decor{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:0}
.bg-grid{position:absolute;inset:0;
  background-image:linear-gradient(rgba(60,85,140,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(60,85,140,.035) 1px,transparent 1px);
  background-size:72px 72px;mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 80%);-webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 80%)}
.bg-ring{position:absolute;border:1px solid rgba(70,95,155,.10);border-radius:50%}
.bg-ring-1{width:520px;height:520px;top:-210px;right:-140px}
.bg-ring-2{width:760px;height:760px;bottom:-430px;left:-260px}
.bg-line{position:absolute;height:1px;background:linear-gradient(90deg,transparent,rgba(70,95,155,.14),transparent);transform:rotate(-14deg)}
.bg-line-1{width:70%;top:26%;left:-8%}
.bg-line-2{width:60%;bottom:22%;right:-10%}

.site-shell{position:relative;z-index:1;max-width:960px;margin:0 auto;padding:26px 20px 40px;
  animation:rise .6s cubic-bezier(.22,.8,.3,1) both}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.glass{
  background:var(--glass);border:1px solid rgba(255,255,255,.9);border-radius:var(--radius);
  box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(28px) saturate(185%);backdrop-filter:blur(28px) saturate(185%);
}
.ud-icon{flex:none;vertical-align:middle}

/* ---------- 顶栏 ---------- */
.topbar{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 18px;margin-bottom:18px;border-radius:22px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit;min-width:0}
.brand-logo{width:42px;height:42px;flex:none;display:grid;place-items:center;border-radius:14px;
  background:linear-gradient(145deg,var(--accent),var(--accent-2));color:#fff;font-weight:700;font-size:15px;letter-spacing:-.5px;
  box-shadow:0 10px 22px rgba(var(--accent-rgb),0.3)}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:15px;letter-spacing:-.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text small{font-size:11.5px;color:var(--muted)}
.topbar-right{display:flex;align-items:center;gap:10px}
.top-chip{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:999px;font-size:12px;color:var(--ink-2);
  background:rgba(255,255,255,.6);border:1px solid rgba(255,255,255,.9)}
.top-link{font-size:13px;color:var(--muted);text-decoration:none;padding:6px 8px;border-radius:10px;transition:.2s}
.top-link:hover{color:var(--accent);background:rgba(255,255,255,.7)}
.top-link .ud-icon{margin-right:3px}

.announce{display:flex;align-items:center;gap:10px;padding:14px 20px;margin-bottom:18px;border-radius:20px;font-size:13.5px;color:var(--ink-2)}
.announce .ud-icon{color:var(--accent)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:52px 54px 48px;margin-bottom:20px;text-align:center}
.hero::after{content:"";position:absolute;top:-120px;left:50%;width:420px;height:220px;transform:translateX(-50%);
  border:1px solid rgba(255,255,255,.75);border-radius:50%;pointer-events:none}
.hero-badge{display:inline-flex;align-items:center;gap:7px;padding:7px 15px;border-radius:999px;font-size:12.5px;font-weight:600;
  color:var(--accent);background:rgba(var(--accent-rgb),0.09);border:1px solid rgba(var(--accent-rgb),0.14)}
.hero h1{margin:20px 0 12px;font-size:clamp(34px,6vw,50px);line-height:1.14;letter-spacing:-1.8px;font-weight:700}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-desc{margin:0 auto;max-width:540px;color:var(--ink-2);font-size:15.5px;line-height:1.8}
.hero-actions{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;margin:30px 0 22px}
.primary-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:15px 28px;border:0;border-radius:18px;
  color:#fff;font-size:15.5px;font-weight:650;letter-spacing:.2px;cursor:pointer;text-decoration:none;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:0 16px 32px rgba(var(--accent-rgb),0.3), inset 0 1px 0 rgba(255,255,255,.35);
  transition:transform .2s cubic-bezier(.22,.8,.3,1),box-shadow .2s}
.primary-btn:hover{transform:translateY(-3px);box-shadow:0 22px 40px rgba(var(--accent-rgb),0.36)}
.primary-btn:active{transform:translateY(0) scale(.985)}
.primary-btn.small{padding:12px 22px;font-size:14px}
.ghost-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 22px;border-radius:18px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);text-decoration:none;cursor:pointer;
  background:rgba(255,255,255,.6);border:1px solid rgba(255,255,255,.95);box-shadow:var(--shadow-soft);transition:.2s}
.ghost-btn:hover{color:var(--accent);transform:translateY(-2px)}
.hero-meta{display:flex;align-items:center;justify-content:center;gap:22px;flex-wrap:wrap;color:var(--muted);font-size:12.5px}
.hero-meta span{display:inline-flex;align-items:center;gap:6px}
.hero-meta .ud-icon{color:var(--accent)}

.device-warn{display:flex;gap:14px;text-align:left;margin-top:32px;padding:20px 22px;border-radius:20px;
  background:rgba(255,255,255,.55);border:1px solid rgba(255,255,255,.9)}
.warn-icon{width:38px;height:38px;flex:none;display:grid;place-items:center;border-radius:13px;color:var(--accent);
  background:rgba(var(--accent-rgb),0.1)}
.warn-body{flex:1;min-width:0}
.warn-body strong{font-size:14.5px}
.warn-body p{margin:5px 0 12px;color:var(--ink-2);font-size:13px;line-height:1.7}
.url-copy{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.url-copy code{padding:8px 12px;border-radius:11px;background:rgba(30,50,90,.05);font-size:12px;color:var(--ink-2);word-break:break-all}
.mini-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:11px;border:1px solid rgba(255,255,255,.95);
  background:rgba(255,255,255,.85);color:var(--accent);font-size:12.5px;font-weight:600;text-decoration:none;cursor:pointer;transition:.2s}
.mini-btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-soft)}
.qr-wrap{display:flex;flex-direction:column;align-items:center;gap:4px;margin-top:16px;width:max-content;color:var(--muted);font-size:11.5px}
.qr{width:112px;height:112px;padding:6px;border-radius:14px;background:#fff;border:1px solid var(--line);object-fit:contain}
.https-warn{margin-top:20px;padding:12px 16px;border-radius:14px;display:flex;align-items:center;gap:8px;justify-content:center;
  font-size:12.5px;color:#a06a1a;background:rgba(240,180,70,.10);border:1px solid rgba(230,175,70,.22)}

.is-hidden{display:none!important}
.flow-card{display:flex;align-items:center;gap:16px;padding:20px 24px;margin-bottom:20px}
.flow-spinner{width:36px;height:36px;flex:none;border-radius:50%;display:grid;place-items:center;
  background:rgba(var(--accent-rgb),0.1)}
.flow-spinner span{width:18px;height:18px;border:2px solid rgba(var(--accent-rgb),0.22);
  border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}
.flow-spinner.big{width:64px;height:64px;margin:0 auto 18px}
.flow-spinner.big span{width:30px;height:30px;border-width:3px}
@keyframes spin{to{transform:rotate(360deg)}}
.flow-text{flex:1;min-width:0}
.flow-text strong{font-size:14.5px}
.flow-text p{margin:3px 0 0;color:var(--muted);font-size:12.5px;line-height:1.6}

/* ---------- 通用区块 ---------- */
.steps-section,.group-section,.privacy,.info-section{padding:32px 34px;margin-bottom:20px}
.section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:24px}
.eyebrow{display:block;font-size:11px;font-weight:700;letter-spacing:2px;color:var(--accent);opacity:.85;margin-bottom:7px}
.section-head h2{margin:0;font-size:21px;letter-spacing:-.6px;font-weight:680}
.section-head p{margin:6px 0 0;color:var(--muted);font-size:13px}
.head-icon{width:42px;height:42px;flex:none;display:grid;place-items:center;border-radius:14px;color:var(--accent);
  background:rgba(var(--accent-rgb),0.09);border:1px solid rgba(255,255,255,.9)}
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.step-card{position:relative;padding:22px 20px 20px;border-radius:20px;background:rgba(255,255,255,.55);
  border:1px solid rgba(255,255,255,.9);transition:transform .22s}
.step-card:hover{transform:translateY(-4px)}
.step-no{position:absolute;right:16px;top:14px;font-size:12px;font-weight:700;letter-spacing:1px;color:var(--muted);opacity:.55}
.step-ico{width:40px;height:40px;display:grid;place-items:center;border-radius:14px;color:#fff;margin-bottom:16px;
  background:linear-gradient(140deg,var(--accent),var(--accent-2));box-shadow:0 10px 20px rgba(var(--accent-rgb),0.24)}
.step-card h3{margin:0 0 8px;font-size:15px;letter-spacing:-.2px}
.step-card p{margin:0;color:var(--ink-2);font-size:12.8px;line-height:1.75}
.steps-foot{display:flex;align-items:flex-start;gap:8px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line);
  color:var(--muted);font-size:12.5px;line-height:1.7}
.steps-foot .ud-icon{color:var(--accent);margin-top:2px}
.privacy p{margin:0;color:var(--ink-2);font-size:13.5px;line-height:1.9}

/* ---------- 交流群按钮 ---------- */
.group-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.group-btn{--btn-accent:var(--accent);display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:19px;
  text-decoration:none;color:var(--ink);background:rgba(255,255,255,.58);border:1px solid rgba(255,255,255,.92);
  transition:transform .2s,box-shadow .2s,border-color .2s}
.group-btn:hover{transform:translateY(-3px);box-shadow:var(--shadow-soft);border-color:rgba(var(--accent-rgb),0.25)}
.group-icon{width:42px;height:42px;flex:none;display:grid;place-items:center;border-radius:14px;color:var(--btn-accent);
  background:rgba(var(--accent-rgb),0.1)}
.group-text{display:flex;flex-direction:column;min-width:0;line-height:1.4}
.group-text strong{font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.group-text small{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.group-arrow{margin-left:auto;color:var(--muted);flex:none}

/* ---------- 广告位 ---------- */
.ad-slot{position:relative;display:flex;align-items:center;gap:16px;overflow:hidden;text-decoration:none;color:inherit;
  padding:16px 20px;margin-bottom:18px;border-radius:22px;background:var(--glass-strong);border:1px solid rgba(255,255,255,.92);
  box-shadow:var(--shadow-soft);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);transition:transform .2s}
a.ad-slot:hover{transform:translateY(-2px)}
.ad-slot img{width:84px;height:84px;flex:none;border-radius:16px;object-fit:cover;background:rgba(30,50,90,.05)}
.ad-copy{min-width:0;flex:1}
.ad-badge{display:inline-block;padding:3px 9px;border-radius:8px;font-size:10.5px;font-weight:700;color:var(--accent);
  background:rgba(var(--accent-rgb),0.1);margin-bottom:6px}
.ad-title{font-size:15px;font-weight:650;letter-spacing:-.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ad-desc{margin-top:3px;font-size:12.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ad-mark{position:absolute;right:12px;top:10px;font-size:10px;color:var(--muted);opacity:.7}
.ad-result_top,.ad-result_bottom{margin-left:0;margin-right:0}
.ad-float{position:fixed;right:18px;bottom:18px;z-index:20;width:210px;flex-direction:column;align-items:flex-start;
  padding:12px;margin:0;border-radius:20px;box-shadow:0 18px 40px rgba(25,44,88,.18)}
.ad-float img{width:100%;height:96px;margin-bottom:8px}
.ad-float .ad-copy{padding:0 4px 4px}

/* ---------- 结果页 ---------- */
.result-hero{padding:44px 40px 40px;margin-bottom:20px;text-align:center}
.result-success{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;font-size:12.5px;font-weight:650;
  color:var(--accent);background:rgba(var(--accent-rgb),0.09);border:1px solid rgba(var(--accent-rgb),0.15)}
.result-hero h1,.state-hero h1{margin:20px 0 8px;font-size:29px;letter-spacing:-1px}
.result-sub{margin:0 auto;max-width:520px;color:var(--ink-2);font-size:14px;line-height:1.75}
.udid-card{margin:28px auto 24px;max-width:620px;padding:22px;border-radius:22px;
  background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.95);box-shadow:inset 0 1px 0 #fff,var(--shadow-soft)}
.udid-card code{display:block;font:600 clamp(14px,2.6vw,21px)/1.6 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  letter-spacing:.6px;color:var(--ink);word-break:break-all;user-select:all;-webkit-user-select:all}
.copy-btn{display:inline-flex;align-items:center;gap:8px;margin-top:18px;padding:11px 22px;border:0;border-radius:14px;
  color:#fff;font-size:13.5px;font-weight:650;cursor:pointer;background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:0 12px 24px rgba(var(--accent-rgb),0.26);transition:transform .2s}
.copy-btn:hover{transform:translateY(-2px)}
.result-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:18px}
.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.info-item{display:flex;flex-direction:column;gap:5px;padding:15px 17px;border-radius:16px;background:rgba(255,255,255,.55);
  border:1px solid rgba(255,255,255,.9)}
.info-item span{font-size:11.5px;color:var(--muted)}
.info-item strong{font-size:14px;font-weight:620;word-break:break-all}
.extra-info{margin-top:16px}
.extra-info summary{cursor:pointer;font-size:13px;color:var(--accent);font-weight:600;padding:8px 0}
.extra-info .info-grid{margin-top:10px}
.state-hero{padding:52px 40px;text-align:center;margin-bottom:20px}
.state-illust{width:66px;height:66px;margin:0 auto 18px;display:grid;place-items:center;border-radius:22px;
  color:var(--accent);background:rgba(var(--accent-rgb),0.1)}
.mini-steps{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin:24px 0}
.mini-steps span{padding:8px 14px;border-radius:12px;font-size:12px;color:var(--ink-2);background:rgba(255,255,255,.6);
  border:1px solid rgba(255,255,255,.9)}

/* ---------- 页脚 / 提示 ---------- */
.ud-footer{padding:26px 8px 8px;text-align:center;color:var(--muted);font-size:12px;line-height:1.9}
.footer-meta{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-top:6px;opacity:.85}
.toast{position:fixed;left:50%;bottom:32px;transform:translate(-50%,16px);z-index:99;padding:12px 22px;border-radius:16px;
  font-size:13.5px;color:#fff;background:rgba(28,38,64,.9);box-shadow:0 16px 36px rgba(20,32,60,.28);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);opacity:0;transition:.25s;pointer-events:none}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- 响应式 ---------- */
@media(max-width:760px){
  .site-shell{padding:16px 12px 30px}
  .hero{padding:38px 22px 32px}
  .steps-section,.group-section,.privacy,.info-section,.result-hero,.state-hero{padding:26px 20px}
  .step-grid{grid-template-columns:1fr}
  .group-grid,.info-grid{grid-template-columns:1fr}
  .hero-meta{gap:12px}
  .topbar{padding:12px 14px}
  .top-chip{display:none}
  .ad-float{width:150px;right:10px;bottom:10px}
  .ad-float img{height:70px}
  .ad-slot img{width:66px;height:66px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}