:root{
  --bg:#0a0e1a;
  --bg-2:#0f1424;
  --panel:#141a2e;
  --panel-2:#1a2138;
  --border:rgba(255,255,255,.08);
  --text:#e8ecf5;
  --text-2:#9aa3b8;
  --text-3:#5e6783;
  --brand:#ff7a18;
  --brand-2:#ffb347;
  --brand-grad:linear-gradient(135deg,#ff7a18 0%,#ffb347 100%);
  --ai:#4f8cff;
  --ai-2:#7aa8ff;
  --ai-grad:linear-gradient(135deg,#4f8cff 0%,#7aa8ff 100%);
  --success:#22c55e;
  --warn:#fbbf24;
  --radius:14px;
  --shadow:0 8px 32px rgba(0,0,0,.4);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,Inter,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}

/* ===== 导航 ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(10,14,26,.75);backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);
}
.nav-inner{max-width:1200px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px}
.logo-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand-grad);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:18px;
  box-shadow:0 4px 12px rgba(255,122,24,.35);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text small{font-size:11px;color:var(--text-3);font-weight:400;letter-spacing:.5px}
.nav-links{display:flex;gap:28px;font-size:14px;color:var(--text-2)}
.nav-links a:hover{color:var(--brand-2)}
.nav-cta{padding:8px 18px;border-radius:8px;background:var(--brand-grad);color:#fff;font-size:14px;font-weight:600;transition:transform .2s}
.nav-cta:hover{transform:translateY(-1px)}

/* ===== Hero ===== */
.hero{min-height:100vh;padding:120px 24px 80px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(800px circle at 20% 30%,rgba(255,122,24,.15),transparent 50%),radial-gradient(600px circle at 80% 70%,rgba(79,140,255,.12),transparent 50%);
}
.hero-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%);
}
.hero-content{max-width:920px;text-align:center;position:relative;z-index:1}
.badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:99px;
  background:rgba(255,122,24,.12);border:1px solid rgba(255,122,24,.3);color:var(--brand-2);font-size:13px;font-weight:500;margin-bottom:28px;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand)}
.hero h1{font-size:clamp(36px,6vw,64px);font-weight:800;line-height:1.15;letter-spacing:-.02em;margin-bottom:24px}
.hero h1 .grad{background:var(--brand-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero h1 .ai-grad{background:var(--ai-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:clamp(16px,2vw,20px);color:var(--text-2);max-width:680px;margin:0 auto 24px;white-space:pre-line}
.hero-tagline{
  font-size:clamp(18px,2.5vw,26px);font-weight:700;margin:0 auto 36px;max-width:680px;
  background:linear-gradient(135deg,#ff7a18,#4f8cff);-webkit-background-clip:text;background-clip:text;color:transparent;
  letter-spacing:.02em
}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{padding:14px 28px;border-radius:10px;font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:8px;transition:all .25s;cursor:pointer;border:none}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 8px 24px rgba(255,122,24,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(255,122,24,.5)}
.btn-ghost{background:rgba(255,255,255,.05);color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2)}
.brand-link{
  margin-top:48px;padding:16px 24px;background:rgba(255,255,255,.03);border:1px solid var(--border);
  border-radius:12px;font-size:13px;color:var(--text-3);display:inline-flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:center;
}
.brand-link b{color:var(--text-2)}
.brand-link .arrow{color:var(--brand-2)}
.brand-link .disclaimer{margin-left:16px;font-size:12px;color:var(--text-3)}

/* ===== 通用 section ===== */
section{padding:80px 24px;position:relative}
.container{max-width:1200px;margin:0 auto}
.sec-head{text-align:center;margin-bottom:56px}
.sec-tag{display:inline-block;padding:4px 14px;border-radius:6px;background:rgba(79,140,255,.12);color:var(--ai-2);font-size:13px;font-weight:600;letter-spacing:1px;margin-bottom:16px}
.sec-head h2{font-size:clamp(28px,4vw,40px);font-weight:800;letter-spacing:-.01em;margin-bottom:14px}
.sec-head p{color:var(--text-2);font-size:16px;max-width:640px;margin:0 auto}

/* ===== 流水线 ===== */
.pipeline{background:var(--bg-2);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:48px;position:relative}
.flow-step{padding:32px 24px;text-align:center;position:relative;border-right:1px dashed var(--border)}
.flow-step:last-child{border-right:none}
.flow-num{width:48px;height:48px;border-radius:50%;background:var(--panel);border:2px solid var(--brand);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-weight:800;color:var(--brand-2);position:relative;z-index:2}
.flow-step.active .flow-num{background:var(--brand-grad);color:#fff;border-color:transparent;box-shadow:0 0 0 6px rgba(255,122,24,.15)}
.flow-step h4{font-size:16px;margin-bottom:6px}
.flow-step p{font-size:13px;color:var(--text-3);line-height:1.6;white-space:pre-line}
.flow-arrow{position:absolute;top:64px;right:-8px;color:var(--brand);font-size:18px;z-index:3}
.flow-step:last-child .flow-arrow{display:none}

/* ===== 工具卡片 ===== */
.tools-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.tool-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:32px;position:relative;overflow:hidden;transition:all .3s}
.tool-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--brand-grad);opacity:0;transition:opacity .3s}
.tool-card:hover{transform:translateY(-4px);border-color:rgba(255,122,24,.3);box-shadow:var(--shadow)}
.tool-card:hover::before{opacity:1}
.tool-head{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:20px}
.tool-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800;color:#fff}
.tool-icon.gd{background:linear-gradient(135deg,#ff7a18,#ffb347)}
.tool-icon.ggh{background:linear-gradient(135deg,#4f8cff,#7aa8ff)}
.tool-icon.tp{background:linear-gradient(135deg,#a855f7,#d8b4fe)}
.tool-icon.sz{background:linear-gradient(135deg,#22c55e,#86efac)}
.tool-status{padding:4px 10px;border-radius:6px;font-size:11px;font-weight:600}
.status-done{background:rgba(34,197,94,.15);color:#86efac;border:1px solid rgba(34,197,94,.3)}
.status-dev{background:rgba(251,191,36,.15);color:#fde68a;border:1px solid rgba(251,191,36,.3)}
.status-plan{background:rgba(94,103,131,.15);color:var(--text-3);border:1px solid var(--border)}
.tool-domain{font-size:13px;color:var(--brand-2);font-weight:600;font-family:"SF Mono",Consolas,monospace;margin-bottom:8px}
.tool-card h3{font-size:22px;font-weight:700;margin-bottom:10px}
.tool-card .desc{color:var(--text-2);font-size:14px;margin-bottom:18px;line-height:1.7}
.tool-features{list-style:none;margin-bottom:24px}
.tool-features li{font-size:13px;color:var(--text-2);padding:6px 0;padding-left:22px;position:relative}
.tool-features li::before{content:"\2713";position:absolute;left:0;color:var(--success);font-weight:700}
.tool-footer{display:flex;align-items:center;justify-content:space-between;padding-top:18px;border-top:1px solid var(--border)}
.tool-link{color:var(--brand-2);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.tool-link:hover{gap:10px;transition:gap .2s}
.tool-platform{font-size:12px;color:var(--text-3)}

/* ===== 品牌矩阵 ===== */
.matrix{background:var(--bg-2);border-top:1px solid var(--border)}
.matrix-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:48px}
.matrix-card{padding:32px;border-radius:var(--radius);border:1px solid var(--border);background:var(--panel)}
.matrix-card.primary{background:linear-gradient(135deg,rgba(255,122,24,.08),rgba(255,179,71,.04));border-color:rgba(255,122,24,.2)}
.matrix-card.secondary{background:linear-gradient(135deg,rgba(79,140,255,.08),rgba(122,168,255,.04));border-color:rgba(79,140,255,.2)}
.matrix-label{font-size:12px;font-weight:600;letter-spacing:1px;text-transform:uppercase;margin-bottom:12px}
.matrix-card.primary .matrix-label{color:var(--brand-2)}
.matrix-card.secondary .matrix-label{color:var(--ai-2)}
.matrix-card h3{font-size:24px;margin-bottom:8px}
.matrix-card .domain{font-family:monospace;font-size:13px;color:var(--text-3);margin-bottom:16px}
.matrix-card p{color:var(--text-2);font-size:14px;margin-bottom:20px}
.matrix-children{display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:5px 12px;border-radius:6px;font-size:12px;background:rgba(255,255,255,.06);color:var(--text-2);border:1px solid var(--border)}

/* ===== 开发路径 ===== */
.phases{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:48px}
.phase{padding:24px;border-radius:12px;background:var(--panel);border:1px solid var(--border);position:relative}
.phase-num{font-size:36px;font-weight:800;color:var(--brand);line-height:1;margin-bottom:8px;opacity:.4}
.phase.active .phase-num{opacity:1}
.phase h4{font-size:15px;margin-bottom:8px}
.phase p{font-size:12px;color:var(--text-3);line-height:1.6}
.phase .time{margin-top:12px;font-size:11px;color:var(--brand-2);font-weight:600}

/* ===== 关注我们 ===== */
.connect{background:var(--bg-2);border-top:1px solid var(--border)}
.connect-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px;margin-top:48px}
.connect-card{padding:32px;border-radius:var(--radius);border:1px solid var(--border);background:var(--panel);text-align:center;transition:all .3s}
.connect-card:hover{transform:translateY(-4px);border-color:rgba(255,122,24,.3);box-shadow:var(--shadow)}
.connect-card h4{font-size:16px;margin-bottom:8px}
.connect-card p{font-size:13px;color:var(--text-3);margin-bottom:20px}
.qrcode-box{width:160px;height:160px;margin:0 auto 16px;border-radius:12px;background:rgba(255,255,255,.05);border:2px dashed var(--border);display:flex;align-items:center;justify-content:center;color:var(--text-3);font-size:13px;overflow:hidden}
.qrcode-box img{width:100%;height:100%;object-fit:cover}
.connect-btn{display:inline-block;padding:10px 24px;border-radius:8px;background:rgba(255,122,24,.12);border:1px solid rgba(255,122,24,.3);color:var(--brand-2);font-size:14px;font-weight:600;transition:all .2s}
.connect-btn:hover{background:var(--brand-grad);color:#fff;border-color:transparent}

/* 友情链接 */
.friend-links{margin-top:32px;text-align:center}
.friend-links h4{font-size:14px;color:var(--text-3);margin-bottom:16px;letter-spacing:1px}
.friend-links-list{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.friend-links-list a{padding:6px 16px;border-radius:6px;background:rgba(255,255,255,.04);border:1px solid var(--border);font-size:13px;color:var(--text-2);transition:all .2s}
.friend-links-list a:hover{background:rgba(255,122,24,.1);border-color:rgba(255,122,24,.3);color:var(--brand-2)}

/* ===== 备案信息 ===== */
.filing{background:var(--bg-2);border-top:1px solid var(--border);padding:48px 24px}
.filing-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.filing-block h5{font-size:13px;color:var(--text-3);font-weight:600;margin-bottom:10px;letter-spacing:.5px}
.filing-block p{font-size:14px;color:var(--text-2)}
.filing-block .pending{color:var(--warn);font-size:12px;padding:4px 10px;background:rgba(251,191,36,.1);border-radius:6px;display:inline-block}

/* ===== Footer ===== */
footer{background:var(--bg);padding:32px 24px;border-top:1px solid var(--border);text-align:center;color:var(--text-3);font-size:13px}
footer a{color:var(--text-2)}
footer a:hover{color:var(--brand-2)}

/* ===== 响应式 ===== */
@media(max-width:900px){
  .nav-links{display:none}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow-step{border-right:none;border-bottom:1px dashed var(--border)}
  .flow-arrow{display:none}
  .tools-grid{grid-template-columns:1fr}
  .matrix-grid{grid-template-columns:1fr}
  .phases{grid-template-columns:repeat(2,1fr)}
  .connect-grid{grid-template-columns:1fr}
  .filing-inner{grid-template-columns:1fr}
}