/* ============================================================
   前台落地页 · 精品级视觉 (home.css)
   仅作用于前台公开页，不影响用户中心 / 后台
   ============================================================ */

:root{
  --lp-primary:#6366f1;
  --lp-primary-2:#8b5cf6;
  --lp-cyan:#22d3ee;
  --lp-ink:#0b1120;
  --lp-ink-2:#111a2e;
  --lp-line:rgba(148,163,184,.16);
  --lp-text:#e2e8f0;
  --lp-dim:#94a3b8;
  --lp-glow:0 0 60px rgba(99,102,241,.35);
}

/* ---------- 前台整体基调：深色 ---------- */
body.lp-body{
  background:#0b1120;
  color:var(--lp-text);
}

/* 顶部导航 ---------- */
.lp-nav{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 40px;
  background:rgba(11,17,32,.72);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--lp-line);
  transition:padding .25s ease,background .25s ease;
}
.lp-nav.scrolled{padding:10px 40px;background:rgba(11,17,32,.92)}
.lp-brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:17px;color:#fff;letter-spacing:-.01em}
.lp-brand .mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--lp-primary),var(--lp-primary-2));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 20px rgba(99,102,241,.45);
}
.lp-brand .mark svg{width:20px;height:20px;stroke:#fff}
.lp-links{display:flex;align-items:center;gap:4px}
.lp-links a{
  color:var(--lp-dim);padding:8px 14px;border-radius:9px;font-size:14px;font-weight:500;
  transition:color .18s,background .18s;
}
.lp-links a:hover{color:#fff;background:rgba(255,255,255,.06)}
.lp-nav-cta{display:flex;align-items:center;gap:10px;margin-left:8px}
.lp-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;
  border:1px solid transparent;transition:transform .18s cubic-bezier(.4,0,.2,1),box-shadow .18s,background .18s;
  white-space:nowrap;
}
.lp-btn-primary{
  background:linear-gradient(135deg,var(--lp-primary),var(--lp-primary-2));
  color:#fff;box-shadow:0 8px 24px rgba(99,102,241,.38);
}
.lp-btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(99,102,241,.5)}
.lp-btn-ghost{
  background:rgba(255,255,255,.05);color:#fff;border-color:rgba(255,255,255,.16);
  backdrop-filter:blur(8px);
}
.lp-btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.28);transform:translateY(-2px)}
.lp-btn-lg{padding:15px 32px;font-size:15.5px;border-radius:12px}

/* ---------- Hero ---------- */
.lp-hero{
  position:relative;overflow:hidden;
  padding:104px 40px 96px;text-align:center;color:#fff;
  background:
    radial-gradient(900px 480px at 50% -8%,rgba(99,102,241,.28),transparent 62%),
    radial-gradient(680px 420px at 88% 12%,rgba(34,211,238,.14),transparent 60%),
    radial-gradient(620px 400px at 6% 30%,rgba(139,92,246,.16),transparent 58%),
    linear-gradient(180deg,#0b1120 0%,#0d1526 100%);
}
/* 网格底纹 */
.lp-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(148,163,184,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(148,163,184,.07) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 78% 62% at 50% 34%,#000 34%,transparent 76%);
  -webkit-mask-image:radial-gradient(ellipse 78% 62% at 50% 34%,#000 34%,transparent 76%);
}
.lp-hero::after{
  content:"";position:absolute;left:50%;top:-160px;transform:translateX(-50%);
  width:760px;height:420px;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(99,102,241,.34),transparent 66%);
  filter:blur(38px);
}
.lp-hero-inner{position:relative;z-index:2;max-width:900px;margin:0 auto}

.lp-pill{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 16px 7px 12px;border-radius:999px;margin-bottom:26px;
  background:rgba(99,102,241,.12);border:1px solid rgba(99,102,241,.32);
  font-size:13px;font-weight:600;color:#c7d2fe;
  backdrop-filter:blur(8px);
}
.lp-pill .dot{
  width:7px;height:7px;border-radius:50%;background:#34d399;flex:0 0 auto;
  box-shadow:0 0 0 3px rgba(52,211,153,.2);
  animation:lp-pulse 2.2s ease-in-out infinite;
}
@keyframes lp-pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.82)}}

.lp-hero h1{
  font-size:58px;line-height:1.1;font-weight:800;letter-spacing:-.035em;
  margin-bottom:22px;
}
.lp-grad{
  background:linear-gradient(105deg,#818cf8 0%,#c4b5fd 42%,#67e8f9 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.lp-hero .sub{
  font-size:18.5px;line-height:1.75;color:#a9b6cc;max-width:660px;margin:0 auto 34px;
}
.lp-hero .sub b{color:#e2e8f0;font-weight:600}
.lp-actions{display:flex;gap:13px;justify-content:center;flex-wrap:wrap}
.lp-trust{
  display:flex;gap:26px;justify-content:center;flex-wrap:wrap;
  margin-top:34px;font-size:13px;color:var(--lp-dim);
}
.lp-trust span{display:inline-flex;align-items:center;gap:7px}
.lp-trust svg{width:15px;height:15px;stroke:#34d399}

/* ---------- 数据条 ---------- */
.lp-metrics{
  position:relative;z-index:3;max-width:1000px;margin:-46px auto 0;padding:0 40px;
}
.lp-metrics-inner{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:linear-gradient(180deg,rgba(30,41,59,.92),rgba(23,32,50,.92));
  border:1px solid var(--lp-line);border-radius:18px;
  backdrop-filter:blur(14px);
  box-shadow:0 24px 60px rgba(2,6,23,.5);
  overflow:hidden;
}
.lp-metric{padding:26px 20px;text-align:center;position:relative}
.lp-metric+.lp-metric::before{
  content:"";position:absolute;left:0;top:22%;height:56%;width:1px;
  background:linear-gradient(180deg,transparent,var(--lp-line),transparent);
}
.lp-metric .num{
  font-size:32px;font-weight:800;letter-spacing:-.03em;
  background:linear-gradient(135deg,#e2e8f0,#94a3b8);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  font-variant-numeric:tabular-nums;
}
.lp-metric .k{font-size:12.5px;color:var(--lp-dim);margin-top:5px;letter-spacing:.01em}
.lp-metric.accent .num{
  background:linear-gradient(135deg,#818cf8,#67e8f9);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}

/* ---------- 通用区块 ---------- */
.lp-sec{position:relative;padding:96px 40px;max-width:1160px;margin:0 auto}
.lp-sec.dark{max-width:none;background:#0b1120;border-top:1px solid var(--lp-line);border-bottom:1px solid var(--lp-line)}
.lp-sec.dark .lp-sec-in{max-width:1160px;margin:0 auto}
.lp-head{text-align:center;max-width:680px;margin:0 auto 54px}
.lp-eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;
  color:#818cf8;margin-bottom:14px;
}
.lp-head h2{
  font-size:38px;font-weight:800;letter-spacing:-.03em;line-height:1.2;margin-bottom:14px;color:#fff;
}
.lp-head p{font-size:16px;color:var(--lp-dim);line-height:1.7}

/* ---------- 能力卡片 ---------- */
.lp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.lp-card{
  position:relative;padding:30px 26px;border-radius:18px;overflow:hidden;
  background:linear-gradient(180deg,rgba(30,41,59,.55),rgba(20,28,45,.55));
  border:1px solid var(--lp-line);
  transition:transform .3s cubic-bezier(.4,0,.2,1),border-color .3s,box-shadow .3s;
}
.lp-card::before{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .35s;pointer-events:none;
  background:radial-gradient(340px 200px at 50% 0%,rgba(99,102,241,.2),transparent 70%);
}
.lp-card:hover{transform:translateY(-5px);border-color:rgba(99,102,241,.42);box-shadow:0 22px 48px rgba(2,6,23,.55)}
.lp-card:hover::before{opacity:1}
.lp-card .ico{
  width:48px;height:48px;border-radius:13px;margin-bottom:19px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(99,102,241,.2),rgba(139,92,246,.14));
  border:1px solid rgba(99,102,241,.26);
}
.lp-card .ico svg{width:23px;height:23px;stroke:#a5b4fc;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.lp-card h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:9px;letter-spacing:-.01em}
.lp-card p{font-size:14px;color:var(--lp-dim);line-height:1.7}
.lp-card .tag{
  display:inline-block;margin-top:14px;font-size:11.5px;font-weight:700;letter-spacing:.05em;
  padding:4px 10px;border-radius:6px;color:#818cf8;background:rgba(99,102,241,.13);
  border:1px solid rgba(99,102,241,.24);
}

/* ---------- 三步流程 ---------- */
.lp-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.lp-step{position:relative;padding:32px 26px 30px;border-radius:18px;
  background:linear-gradient(180deg,rgba(30,41,59,.5),rgba(20,28,45,.5));
  border:1px solid var(--lp-line);
}
.lp-step .no{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;color:#fff;margin-bottom:18px;
  background:linear-gradient(135deg,var(--lp-primary),var(--lp-primary-2));
  box-shadow:0 8px 20px rgba(99,102,241,.36);
}
.lp-step h3{font-size:16.5px;font-weight:700;color:#fff;margin-bottom:8px}
.lp-step p{font-size:13.8px;color:var(--lp-dim);line-height:1.7}
.lp-step .conn{
  position:absolute;right:-13px;top:52px;width:26px;height:2px;
  background:linear-gradient(90deg,rgba(99,102,241,.6),transparent);
}
.lp-step:last-child .conn{display:none}

/* ---------- 信任/安全 ---------- */
.lp-trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.lp-trustcard{
  padding:26px 22px;border-radius:16px;text-align:center;
  background:linear-gradient(180deg,rgba(30,41,59,.5),rgba(20,28,45,.5));
  border:1px solid var(--lp-line);transition:border-color .28s,transform .28s;
}
.lp-trustcard:hover{border-color:rgba(34,211,238,.35);transform:translateY(-4px)}
.lp-trustcard svg{width:26px;height:26px;stroke:#67e8f9;fill:none;stroke-width:1.8;margin-bottom:14px}
.lp-trustcard b{display:block;font-size:15px;color:#fff;margin-bottom:6px}
.lp-trustcard span{font-size:13px;color:var(--lp-dim);line-height:1.6}

/* ---------- 常见问题 ---------- */
.lp-faq{max-width:820px;margin:0 auto}
.lp-faq details{
  border:1px solid var(--lp-line);border-radius:14px;margin-bottom:12px;
  background:linear-gradient(180deg,rgba(30,41,59,.45),rgba(20,28,45,.45));
  overflow:hidden;transition:border-color .25s;
}
.lp-faq details[open]{border-color:rgba(99,102,241,.4)}
.lp-faq summary{
  padding:18px 22px;cursor:pointer;font-weight:600;font-size:15px;color:#e2e8f0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;list-style:none;
}
.lp-faq summary::-webkit-details-marker{display:none}
.lp-faq summary::after{
  content:"";flex:0 0 auto;width:9px;height:9px;margin-right:4px;
  border-right:2px solid #818cf8;border-bottom:2px solid #818cf8;
  transform:rotate(45deg);transition:transform .25s;
}
.lp-faq details[open] summary::after{transform:rotate(-135deg)}
.lp-faq .ans{padding:0 22px 20px;color:var(--lp-dim);font-size:14px;line-height:1.75}

/* ---------- 结尾 CTA ---------- */
.lp-cta{
  position:relative;overflow:hidden;margin:0 40px 0;
  padding:74px 40px;border-radius:26px;text-align:center;
  background:
    radial-gradient(620px 300px at 50% 0%,rgba(99,102,241,.34),transparent 68%),
    linear-gradient(140deg,#151d33,#0e1526);
  border:1px solid rgba(99,102,241,.3);
  box-shadow:0 30px 80px rgba(2,6,23,.55);
  max-width:1080px;margin-left:auto;margin-right:auto;
}
.lp-cta h2{font-size:36px;font-weight:800;color:#fff;letter-spacing:-.03em;margin-bottom:14px}
.lp-cta p{font-size:16.5px;color:#a9b6cc;max-width:560px;margin:0 auto 30px;line-height:1.7}
.lp-cta .lp-actions{position:relative;z-index:2}

/* ---------- 页脚 ---------- */
.lp-foot{
  margin-top:88px;padding:40px;text-align:center;color:#64748b;font-size:13.5px;
  border-top:1px solid var(--lp-line);background:#0b1120;
}
.lp-foot .links{display:flex;gap:20px;justify-content:center;margin-bottom:16px;flex-wrap:wrap}
.lp-foot .links a{color:#94a3b8;transition:color .18s}
.lp-foot .links a:hover{color:#e2e8f0}
.lp-foot .cp{color:#475569;font-size:12.5px}

/* 入场动画：默认可见（无 JS 也能正常浏览），仅在 JS 接管后启用隐藏→浮现 */
html.lp-anim .lp-reveal{opacity:0;transform:translateY(22px)}
html.lp-anim .lp-reveal.in{opacity:1;transform:none}
.lp-reveal{transition:opacity .7s cubic-bezier(.4,0,.2,1),transform .7s cubic-bezier(.4,0,.2,1)}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .lp-grid,.lp-steps{grid-template-columns:repeat(2,1fr)}
  .lp-trust-grid{grid-template-columns:repeat(2,1fr)}
  .lp-step .conn{display:none}
}
@media(max-width:860px){
  .lp-nav{padding:12px 20px}
  .lp-nav.scrolled{padding:10px 20px}
  .lp-links{display:none}
  .lp-hero{padding:70px 22px 76px}
  .lp-hero h1{font-size:37px}
  .lp-hero .sub{font-size:16px}
  .lp-sec{padding:64px 22px}
  .lp-head h2{font-size:28px}
  .lp-metrics{padding:0 22px;margin-top:-34px}
  .lp-metrics-inner{grid-template-columns:repeat(2,1fr)}
  .lp-metric+.lp-metric::before{display:none}
  .lp-metric{border-bottom:1px solid var(--lp-line)}
  .lp-grid,.lp-steps,.lp-trust-grid{grid-template-columns:1fr}
  .lp-cta{margin:0 22px;padding:52px 24px}
  .lp-cta h2{font-size:27px}
  .lp-foot{padding:32px 22px}
  .lp-btn-lg{padding:14px 26px;font-size:15px;width:100%}
  .lp-actions{flex-direction:column;align-items:stretch}
  .lp-actions .lp-btn{width:100%}
}