/* ===== 微创云授权站 主样式 ===== */
:root{
  --brand:#4f46e5; --brand-light:#6366f1; --accent:#22d3ee;
  --bg:#0a0e1a; --bg2:#0f1629; --bg3:#151d35;
  --surface:#1a2236; --surface2:#212d45;
  --border:rgba(99,102,241,.18); --border2:rgba(255,255,255,.07);
  --text:#e2e8f0; --text2:#94a3b8; --text3:#64748b;
  --green:#22c55e; --red:#ef4444; --yellow:#f59e0b;
  --r:calc(12px * var(--radius-factor,1));
  --r-lg:calc(20px * var(--radius-factor,1));
  --r-btn:calc(10px * var(--radius-factor,1));
  --r-full:calc(100px * var(--radius-factor,1));
}
[data-theme="light"]{
  --bg:#f8fafc; --bg2:#f1f5f9; --bg3:#e2e8f0;
  --surface:#fff; --surface2:#f8fafc;
  --border:rgba(79,70,229,.15); --border2:rgba(0,0,0,.07);
  --text:#0f172a; --text2:#475569; --text3:#94a3b8;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'PingFang SC','Microsoft YaHei','Segoe UI',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;transition:background .3s,color .3s}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:var(--bg);backdrop-filter:blur(20px);border-bottom:1px solid var(--border2);transition:background .3s,box-shadow .3s}
.nav.scrolled{box-shadow:0 2px 16px rgba(0,0,0,.08)}
.nav-inner{display:flex;align-items:center;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:8px;font-size:18px;font-weight:700;flex-shrink:0}
.brand-logo{height:32px;width:auto;border-radius:8px;object-fit:cover}
.nav-links{display:flex;align-items:center;gap:4px;flex:1;justify-content:flex-end}
.nav-links a{padding:6px 14px;border-radius:var(--r-btn);font-size:14px;color:var(--text2);transition:all .2s;white-space:nowrap}
.nav-links a:hover{color:var(--text);background:var(--surface)}
.nav-user{font-size:13px;color:var(--text3);padding:6px 10px}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;color:var(--text);padding:8px}
.nav-toggle span{display:block;width:22px;height:2px;background:currentColor;margin:4px 0;border-radius:2px}

/* btn */
.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 22px;border-radius:var(--r-btn);font-size:14px;font-weight:600;cursor:pointer;border:none;transition:all .2s;white-space:nowrap;text-decoration:none}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-light);transform:translateY(-1px);box-shadow:0 4px 16px rgba(79,70,229,.3)}
.btn-ghost{background:transparent;color:var(--text2);border:1px solid var(--border2)}
.btn-ghost:hover{color:var(--text);border-color:var(--brand)}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{padding:6px 16px;font-size:13px}
.btn-lg{padding:14px 32px;font-size:16px}
.btn-block{width:100%;justify-content:center}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* alert */
.alert{padding:14px 20px;border-radius:var(--r);font-size:14px;margin:16px 0}
.alert-success{background:rgba(34,197,94,.1);border:1px solid rgba(34,197,94,.3);color:#86efac}
.alert-error{background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.3);color:#fca5a5}
.alert-info{background:rgba(79,70,229,.1);border:1px solid rgba(79,70,229,.3);color:#a5b4fc}

/* form */
.form-card{max-width:420px;margin:0 auto;background:var(--surface);border:1px solid var(--border2);border-radius:var(--r-lg);padding:40px 36px;box-shadow:0 8px 48px rgba(0,0,0,.12)}
.form-card h1{font-size:22px;font-weight:800;margin-bottom:6px;text-align:center}
.form-card .sub{font-size:13px;color:var(--text3);text-align:center;margin-bottom:28px}
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:13px;font-weight:600;color:var(--text2);margin-bottom:6px}
.form-label .req{color:var(--red)}
.form-input{width:100%;padding:10px 14px;background:var(--bg3);border:1px solid var(--border2);border-radius:var(--r);font-size:14px;color:var(--text);font-family:inherit;outline:none;transition:border-color .2s}
.form-input:focus{border-color:var(--brand)}
.form-hint{font-size:12px;color:var(--text3);margin-top:4px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.btn-row{display:flex;gap:8px;margin-top:4px}
.code-btn{white-space:nowrap;font-size:13px;padding:10px 14px;flex-shrink:0}

/* section */
section{padding:100px 0}
.section-title{font-size:clamp(28px,4vw,42px);font-weight:800;line-height:1.2;margin-bottom:12px}
.section-title .accent{background:linear-gradient(135deg,var(--brand-light),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-sub{font-size:16px;color:var(--text2);line-height:1.7;max-width:560px}
.head-center{text-align:center;margin-bottom:56px}
.head-center .section-sub{margin:0 auto}

/* hero */
.hero{min-height:90vh;display:flex;flex-direction:column;justify-content:center;padding:120px 0 80px;text-align:center;position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse 60% 50% at 50% 30%,rgba(79,70,229,.15) 0%,transparent 70%);pointer-events:none}
.hero h1{font-size:clamp(34px,6vw,60px);font-weight:800;line-height:1.1;margin-bottom:20px;letter-spacing:-.02em;position:relative}
.hero p{font-size:18px;color:var(--text2);max-width:600px;margin:0 auto 36px;line-height:1.7;position:relative}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;position:relative}

/* pricing */
.pricing-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:48px}
.price-card{background:var(--surface);border:1px solid var(--border2);border-radius:var(--r-lg);padding:32px 24px;transition:all .2s;text-align:center}
.price-card:hover{border-color:var(--brand);transform:translateY(-4px);box-shadow:0 8px 32px rgba(79,70,229,.15)}
.price-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.price-card .price{font-size:42px;font-weight:800;color:var(--brand-light);margin:16px 0}
.price-card .price small{font-size:14px;color:var(--text3);font-weight:400}
.price-card .period{font-size:13px;color:var(--text3);margin-bottom:20px}
.price-card ul{text-align:left;margin-bottom:24px}
.price-card li{font-size:13px;color:var(--text2);padding:6px 0;border-bottom:1px solid var(--border2);display:flex;align-items:center;gap:6px}
.price-card li::before{content:'✓';color:var(--green);font-weight:700}
.price-card li:last-child{border:none}

/* table */
.table-wrap{overflow-x:auto;background:var(--surface);border:1px solid var(--border2);border-radius:var(--r-lg)}
table.data{width:100%;border-collapse:collapse;font-size:13px}
.data th{background:var(--bg3);padding:12px 16px;text-align:left;font-weight:700;color:var(--text2);border-bottom:1px solid var(--border2);white-space:nowrap}
.data td{padding:12px 16px;color:var(--text2);border-bottom:1px solid var(--border2)}
.data tr:last-child td{border-bottom:none}
.data tr:hover td{background:rgba(79,70,229,.04)}
.badge{display:inline-block;padding:2px 10px;border-radius:var(--r-full);font-size:11px;font-weight:700}
.badge.green{background:rgba(34,197,94,.12);color:var(--green)}
.badge.red{background:rgba(239,68,68,.12);color:#fca5a5}
.badge.gray{background:rgba(100,116,139,.1);color:var(--text3)}
.badge.yellow{background:rgba(245,158,11,.12);color:#fcd34d}

/* card */
.card{background:var(--surface);border:1px solid var(--border2);border-radius:var(--r-lg);padding:24px;margin-bottom:20px}
.card h2{font-size:16px;font-weight:700;margin-bottom:16px}

/* footer */
.footer{border-top:1px solid var(--border2);padding:28px 0;text-align:center;font-size:13px;color:var(--text3)}

/* utility */
.mt-0{margin-top:0!important}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mt-4{margin-top:32px}
.mb-0{margin-bottom:0!important}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}
.text-center{text-align:center}
.text-mono{font-family:'SF Mono',Consolas,'Courier New',monospace}
.text-brand{color:var(--brand-light)}
.text-green{color:var(--green)}.text-red{color:#fca5a5}.text-gray{color:var(--text3)}
.flex{display:flex}.gap-2{gap:8px}.gap-3{gap:12px}.items-center{align-items:center}.justify-between{justify-content:space-between}
.copy-btn{cursor:pointer;font-size:12px;color:var(--brand);border:1px solid var(--border);padding:2px 8px;border-radius:6px;background:transparent}
.copy-btn:hover{background:var(--brand);color:#fff}

/* 响应式 */
@media(max-width:768px){
  .nav-links a:not(.btn){display:none}
  .pricing-grid{grid-template-columns:repeat(2,1fr)}
  .form-row{grid-template-columns:1fr}
}
@media(max-width:580px){
  .pricing-grid{grid-template-columns:1fr}
  .form-card{padding:28px 20px}
}