/* wuyoulianjie.lol — 无忧链接官方入口，Tech Portal 设计系统（v4，与homes共享设计语言，强调色不同）。
   深色科技底 + 翠绿/蓝强调色（信任/确认语义），比homes更紧凑、更强调"确认后立即进入"。 */

:root {
  --bg: #0a0d14;
  --bg-alt: #0d1119;
  --bg-panel: #10151f;
  --ink: #f2f5fa;
  --ink-soft: #9aa4b3;
  --ink-dim: #6b7484;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --glass: rgba(255, 255, 255, 0.035);
  --glass-hover: rgba(255, 255, 255, 0.06);
  --accent: #10b981;
  --accent2: #3b82f6;
  --accent3: #22d3ee;
  --accent-rgb: 16, 185, 129;
  --accent2-rgb: 59, 130, 246;
  --accent3-rgb: 34, 211, 238;
  --radius: 16px;
  --radius-sm: 10px;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); line-height: 1.7; overflow-x: hidden; }
a { color: var(--accent3); text-decoration: none; }
a:hover { text-decoration: underline; }

.announce-bar { background: var(--bg-alt); color: var(--ink-soft); text-align: center; font-size: 12.5px; padding: 9px 20px; border-bottom: 1px solid var(--border); }

.site-header { background: rgba(10, 13, 20, 0.75); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 40; }
.header-inner { max-width: 1040px; margin: 0 auto; padding: 15px 20px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 9px; color: var(--ink); font-weight: 700; font-size: 15.5px; }
.brand-mark { width: 30px; height: 30px; border-radius: 9px; background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; flex-shrink: 0; box-shadow: 0 0 16px rgba(var(--accent-rgb), 0.35); }

.nav-toggle { display: none; background: var(--glass); border: 1px solid var(--border); border-radius: 8px; cursor: pointer; width: 34px; height: 34px; flex-direction: column; justify-content: center; align-items: center; gap: 4px; }
.nav-toggle span { display: block; width: 15px; height: 1.5px; background: var(--ink); }

.nav-wrap { display: flex; align-items: center; gap: 16px; }
.site-nav { display: flex; gap: 4px; }
.site-nav a { color: var(--ink-soft); font-size: 13px; padding: 7px 12px; border-radius: 999px; font-weight: 600; }
.site-nav a:hover { text-decoration: none; color: var(--ink); }
.site-nav a[aria-current="page"] { background: var(--glass); color: var(--ink); border: 1px solid var(--border-strong); }

.breadcrumb { max-width: 1040px; margin: 12px auto 0; padding: 0 20px; font-size: 12px; color: var(--ink-dim); }
.breadcrumb a { color: var(--ink-dim); }

.page-wrap { max-width: 720px; margin: 0 auto; padding: 18px 20px 80px; }

h1 { font-size: 30px; font-weight: 800; margin: 8px 0 16px; letter-spacing: -0.3px; }
h2 { font-size: 25px; font-weight: 800; margin: 0 0 12px; letter-spacing: -0.3px; }
h3 { font-size: 15px; font-weight: 700; margin: 14px 0 8px; color: var(--ink); }
p { font-size: 15px; margin: 0 0 14px; color: var(--ink-soft); }
p.lede { font-size: 16.5px; color: var(--ink-soft); font-weight: 500; }
ul, ol { margin: 0 0 16px 20px; color: var(--ink-soft); }
li { margin-bottom: 6px; }
code { font-family: monospace; background: rgba(255, 255, 255, 0.06); padding: 1px 6px; border-radius: 4px; font-size: 13px; color: var(--accent3); }

.btn-cta { display: inline-block; background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%); color: #fff !important; padding: 13px 28px; border-radius: 999px; font-weight: 800; font-size: 15px; text-decoration: none !important; box-shadow: 0 8px 24px rgba(var(--accent-rgb), 0.3); transition: box-shadow 0.2s, transform 0.2s; }
.btn-cta:hover { box-shadow: 0 10px 30px rgba(var(--accent-rgb), 0.42); transform: translateY(-1px); text-decoration: none; }
.btn-cta-sm { padding: 8px 18px; font-size: 12.5px; }
.btn-secondary { display: inline-block; background: var(--glass); color: var(--ink) !important; padding: 12px 26px; border-radius: 999px; font-weight: 700; font-size: 14px; border: 1px solid var(--border-strong); text-decoration: none !important; }
.btn-secondary:hover { background: var(--glass-hover); text-decoration: none; }

.glass-card { background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); }

.trust-badges { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0 20px; }
.trust-badge { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: 999px; background: var(--glass); border: 1px solid var(--border); color: var(--ink-soft); font-size: 12.5px; font-weight: 700; }
.trust-badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px rgba(var(--accent-rgb), 0.8); }

/* Hero */
.hero { position: relative; overflow: hidden; width: 100vw; left: 50%; right: 50%; margin-left: -50vw; margin-right: -50vw; margin-top: -18px; background: var(--bg); border-bottom: 1px solid var(--border); background-image: linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px); background-size: 40px 40px; }
.hero::before { content: ""; position: absolute; top: -160px; left: 50%; transform: translateX(-50%); width: 560px; height: 560px; border-radius: 50%; background: radial-gradient(circle, rgba(var(--accent-rgb), 0.25) 0%, rgba(var(--accent-rgb), 0) 70%); pointer-events: none; }
.hero-inner { position: relative; max-width: 760px; margin: 0 auto; padding: 52px 20px 0; text-align: center; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--accent3); font-weight: 800; margin-bottom: 18px; padding: 6px 14px; border-radius: 999px; background: var(--glass); border: 1px solid var(--border-strong); }
.hero h1 { font-size: 38px; margin: 0 0 16px; background: linear-gradient(135deg, #ffffff 20%, #c8f5e6 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero p.lede { font-size: 17px; max-width: 560px; margin: 0 auto 26px; }
.hero-cta-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-bottom: 22px; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 8px; }
.badge { display: inline-flex; align-items: center; gap: 7px; padding: 7px 14px; border-radius: 999px; background: var(--glass); border: 1px solid var(--border); font-size: 12.5px; font-weight: 600; color: var(--ink-soft); }
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent3); }

.stat-strip { position: relative; display: flex; flex-wrap: wrap; border-top: 1px solid var(--border); }
.stat-strip .stat { flex: 1; min-width: 160px; padding: 20px; border-right: 1px solid var(--border); text-align: center; }
.stat-strip .stat:last-child { border-right: none; }
.stat-strip .stat .num { font-size: 22px; font-weight: 800; display: block; background: linear-gradient(135deg, var(--accent3), var(--accent)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat-strip .stat .label { font-size: 12px; color: var(--ink-dim); }

/* sections */
.section { max-width: 760px; margin: 0 auto; padding: 46px 20px; border-top: 1px solid var(--border); }
.section:first-of-type { border-top: none; }
.section-head { margin: 0 0 26px; }
.eyebrow { display: block; font-size: 11.5px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--accent3); font-weight: 800; margin-bottom: 10px; }
.section-head p { color: var(--ink-soft); margin: 0; font-size: 14.5px; }

.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.feature-card { background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; transition: border-color 0.15s, transform 0.15s; }
.feature-card:hover { border-color: rgba(var(--accent-rgb), 0.4); transform: translateY(-2px); }
.feature-icon { width: 36px; height: 36px; border-radius: 9px; background: linear-gradient(135deg, rgba(var(--accent-rgb),0.22), rgba(var(--accent2-rgb),0.18)); border: 1px solid rgba(var(--accent-rgb), 0.3); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 15px; margin-bottom: 12px; font-weight: 800; }
.feature-card h3 { margin: 0 0 6px; font-size: 15px; }
.feature-card p { font-size: 13px; color: var(--ink-soft); margin: 0; }

.decision-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.decision-card { padding: 18px; border-radius: var(--radius); background: var(--glass); border: 1px solid var(--border); border-top: 3px solid var(--accent); }
.decision-card h3 { margin: 0 0 6px; font-size: 14.5px; }
.decision-card p { font-size: 13px; color: var(--ink-soft); margin: 0; }

.quicklinks-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.quicklink-card { display: block; background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; color: var(--ink); font-weight: 500; }
.quicklink-card:hover { border-color: rgba(var(--accent-rgb), 0.4); text-decoration: none; }
.quicklink-card .ql-title { font-weight: 800; font-size: 14px; display: block; margin-bottom: 4px; }
.quicklink-card .ql-desc { font-size: 12px; color: var(--ink-dim); font-weight: 400; display: block; margin-bottom: 8px; }
.quicklink-card .ql-arrow { color: var(--accent3); font-size: 12.5px; font-weight: 800; }

.cta-banner { position: relative; overflow: hidden; max-width: 760px; margin: 0 auto; padding: 44px 32px; border-radius: 22px; background: linear-gradient(135deg, #0d1f1a 0%, #0d1a2e 100%); border: 1px solid var(--border-strong); text-align: center; }
.cta-banner::before { content: ""; position: absolute; top: -120px; left: 50%; transform: translateX(-50%); width: 460px; height: 460px; border-radius: 50%; background: radial-gradient(circle, rgba(var(--accent-rgb), 0.35) 0%, rgba(var(--accent-rgb), 0) 70%); pointer-events: none; }
.cta-banner h2 { position: relative; color: #fff; margin: 0 0 10px; font-size: 24px; }
.cta-banner p { position: relative; color: var(--ink-soft); margin: 0 0 22px; font-size: 14.5px; }
.cta-banner .btn-cta { position: relative; }

.entry-card { background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin: 16px 0; }
.entry-card h3 { margin-top: 0; }

.identify-list { list-style: none; margin: 0 0 20px; padding: 0; }
.identify-list li { display: flex; gap: 12px; background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 10px; color: var(--ink-soft); }
.identify-list li .mark { color: var(--accent); font-weight: 800; flex-shrink: 0; }
.identify-list li.warn .mark { color: #f87171; }
.identify-list li.warn { border-color: rgba(248, 113, 113, 0.3); }

.faq-list { max-width: 760px; }
.faq-item { background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 18px; margin-bottom: 10px; }
.faq-item summary { cursor: pointer; font-weight: 700; font-size: 15px; color: var(--ink); list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; float: right; color: var(--ink-dim); font-size: 17px; }
.faq-item[open] summary::after { content: "–"; }
.faq-a { margin-top: 10px; color: var(--ink-soft); font-size: 14px; }

.callout { background: var(--glass); border: 1px solid var(--border); border-left: 3px solid var(--accent2); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 14px 18px; margin: 18px 0; font-size: 13.5px; color: var(--ink-soft); }

.inline-cta { margin: 26px 0; padding: 24px; background: var(--glass); border: 1px solid var(--border); border-radius: var(--radius); text-align: center; }
.inline-cta p { margin-bottom: 12px; font-weight: 700; color: var(--ink); }

.site-footer { background: var(--bg-alt); border-top: 1px solid var(--border); margin-top: 0; }
.footer-inner { max-width: 1040px; margin: 0 auto; padding: 30px 20px; display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 20px; }
.footer-col h4 { font-size: 12px; color: var(--ink-dim); margin: 0 0 10px; text-transform: uppercase; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 7px; font-size: 13px; }
.footer-col a { color: var(--ink-soft); font-weight: 500; }
p.tag { font-size: 12px; color: var(--ink-dim); font-weight: 600; margin: 0; }
.footer-bottom { border-top: 1px solid var(--border); padding: 14px 20px 22px; max-width: 1040px; margin: 0 auto; font-size: 11px; color: var(--ink-dim); }
.footer-disclosure { max-width: 820px; }
.footer-friends { font-size: 11px; color: var(--ink-dim); margin: 8px 0; }
.footer-friends a { color: var(--ink-soft); }

@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .nav-wrap { position: absolute; top: 100%; left: 0; right: 0; background: var(--bg); flex-direction: column; align-items: flex-start; padding: 10px 20px 18px; gap: 12px; display: none; border-bottom: 1px solid var(--border); }
  .nav-wrap.is-open { display: flex; }
  .site-nav { flex-direction: column; gap: 8px; width: 100%; }
  .footer-inner { grid-template-columns: 1fr; }
  .feature-grid, .decision-grid, .quicklinks-grid { grid-template-columns: 1fr; }
  h1 { font-size: 25px; }
  .hero h1 { font-size: 27px; }
  .hero-inner { padding: 40px 18px 0; }
  .cta-banner { margin: 0 16px; padding: 32px 22px; }
}