/* ASTON777 — 车灯掠过 headlight-sweep hero + 卡片流. 午夜碳 #050B18 × 银蓝 #C0CAFF */
:root{
  --bg:#050B18;--panel:#0B1526;--panel2:#0E1B30;--text:#E8EEFF;--muted:#8FA3D9;
  --neon:#C0CAFF;--glow:0 0 12px rgba(192,202,255,.35),0 0 26px rgba(192,202,255,.18);
  --grad-panel:linear-gradient(150deg,#0E1B30 0%,#050B18 100%);
  --font-h:'Racing Sans One',sans-serif;--font-b:'Saira',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--font-b);line-height:1.7;font-size:16px}
img,svg{max-width:100%;vertical-align:middle}
a{color:var(--neon);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 16px}
.container.narrow{max-width:840px}
.center{text-align:center}
.site-header{position:sticky;top:0;z-index:50;background:rgba(5,11,24,.92);backdrop-filter:blur(10px);border-bottom:1px solid rgba(192,202,255,.3)}
.header-in{display:flex;align-items:center;gap:14px;min-height:60px}
.brand{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-h);font-weight:400;font-size:1.2rem;color:var(--text);white-space:nowrap;letter-spacing:.02em}
.brand:hover{text-decoration:none}
.nav-desktop{display:none;margin-left:auto;gap:18px}
.nav-desktop a{color:var(--muted);font-weight:500;font-size:.95rem}
.nav-desktop a:hover{color:var(--neon);text-decoration:none}
.header-cta{display:flex;gap:8px;margin-left:auto}
.nav-desktop+.header-cta{margin-left:0}
.btn{display:inline-block;padding:10px 20px;border-radius:10px;font-family:var(--font-b);font-weight:700;font-size:.9rem;cursor:pointer;border:1px solid transparent;transition:transform .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,#C0CAFF,#94A8F0);color:#050B18;box-shadow:var(--glow)}
.btn-secondary{background:transparent;color:var(--neon);border-color:rgba(192,202,255,.55)}
.btn-block{display:block;width:100%;text-align:center}
.pulse{animation:pulse-glow 2s infinite}
@keyframes pulse-glow{0%,100%{box-shadow:0 0 8px rgba(192,202,255,.35)}50%{box-shadow:0 0 22px rgba(192,202,255,.75)}}
.nav-toggle{display:none}
.burger{display:flex;flex-direction:column;gap:4px;cursor:pointer;padding:6px;margin-left:4px}
.burger span{width:22px;height:2px;background:var(--neon);border-radius:2px}
.m-nav{display:none;background:var(--panel);border-bottom:1px solid rgba(192,202,255,.28)}
.m-nav-group{padding:10px 16px}
.m-nav-group h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--neon);margin-bottom:6px;font-weight:700}
.m-nav-group a{display:block;padding:6px 0;color:var(--text)}
.nav-toggle:checked~.m-nav{display:block}
/* headlight-sweep hero */
.sweep-hero{position:relative;overflow:hidden;padding:64px 0 52px;background:linear-gradient(180deg,#0B1526 0%,#050B18 100%)}
.sweep-beams{position:absolute;inset:0;pointer-events:none}
.sweep-beams i{position:absolute;top:-30%;height:160%;width:120px;background:linear-gradient(100deg,transparent 0%,rgba(192,202,255,.16) 45%,rgba(232,238,255,.5) 50%,rgba(192,202,255,.16) 55%,transparent 100%);transform:rotate(16deg);filter:blur(6px)}
.sweep-beams i:first-child{left:-140px;animation:beam-sweep 5s linear infinite}
.sweep-beams i:last-child{left:-320px;width:70px;opacity:.7;animation:beam-sweep 5s linear 1.1s infinite}
@keyframes beam-sweep{0%{left:-160px}100%{left:110%}}
.sweep-hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:linear-gradient(90deg,transparent,rgba(192,202,255,.6),transparent)}
.sweep-in{position:relative;z-index:1}
.sweep-hero h1{font-family:var(--font-h);font-size:clamp(2.4rem,8vw,4rem);letter-spacing:.04em;color:var(--text);text-shadow:0 0 22px rgba(192,202,255,.45)}
.hero-sub{max-width:620px;margin:12px 0 18px;color:var(--muted)}
.hero-chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.chip{border:1px solid rgba(192,202,255,.5);color:var(--neon);border-radius:999px;padding:3px 14px;font-size:.82rem;font-weight:600;letter-spacing:.04em}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.section{padding:38px 0}
.section-alt{background:rgba(11,21,38,.6)}
.sec-title{font-family:var(--font-h);font-weight:400;font-size:1.5rem;margin-bottom:18px;text-align:center;letter-spacing:.03em}
.sec-sub{text-align:center;color:var(--muted);margin:-10px 0 18px;font-size:.92rem}
.grid-3,.grid-4{display:grid;gap:16px;grid-template-columns:1fr;margin-bottom:8px}
.glow-card{display:block;background:var(--grad-panel);border:1px solid rgba(192,202,255,.32);border-radius:14px;padding:18px;color:var(--text);transition:border-color .15s,box-shadow .15s}
.glow-card:hover{border-color:var(--neon);box-shadow:var(--glow);text-decoration:none}
.glow-card h3{font-size:1.05rem;margin-bottom:6px;color:var(--neon)}
.glow-card p{color:var(--muted);font-size:.92rem}
.nc-icon{font-size:1.5rem;display:block;margin-bottom:8px}
/* UI checklist cards */
.check-grid{display:grid;gap:12px;grid-template-columns:1fr;margin:14px 0}
.check-card{display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:start;background:var(--grad-panel);border:1px solid rgba(192,202,255,.3);border-radius:12px;padding:14px}
.check-box{grid-row:span 2;display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border:1px solid var(--neon);border-radius:8px;color:var(--neon);font-weight:700;box-shadow:0 0 10px rgba(192,202,255,.3)}
.check-card h3{font-size:.98rem;color:var(--neon)}
.check-card p{grid-column:2;color:var(--muted);font-size:.9rem}
/* flow */
.flow{margin:16px 0;padding:20px;display:block}
.flow>*{border-radius:10px;padding:11px 14px;margin-bottom:9px;font-size:.95rem;background:rgba(5,11,24,.55);border:1px solid rgba(192,202,255,.32)}
.flow-step strong{color:var(--neon)}
.flow-end{border:1px dashed rgba(192,202,255,.5);color:var(--muted)}
.prose .note{color:var(--muted);font-size:.9rem}
.page-head{padding-top:22px}
.page-head h1,.prose h1{font-family:var(--font-h);font-weight:400;font-size:clamp(1.6rem,4.5vw,2.2rem)}
.prose h2{font-size:1.35rem;margin:26px 0 10px}
.prose h3{font-size:1.08rem;font-weight:700;margin:20px 0 8px;color:var(--neon)}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 14px 22px}
.prose li{margin-bottom:6px}
.steps li{margin-bottom:10px}
.steps li strong{color:var(--neon)}
.quick-form{display:grid;gap:8px;max-width:360px;margin:12px 0}
.quick-form label{font-size:.85rem;color:var(--muted)}
.quick-form input{background:#050B18;border:1px solid rgba(192,202,255,.4);border-radius:8px;padding:10px 12px;color:var(--text);font-family:var(--font-b)}
.quick-form input:focus{outline:none;border-color:var(--neon)}
.kamus-grid{display:grid;gap:10px;margin:14px 0}
.kamus-item{background:var(--grad-panel);border:1px solid rgba(192,202,255,.3);border-radius:10px;overflow:hidden}
.kamus-item summary{cursor:pointer;padding:13px 16px;font-weight:700;list-style:none;position:relative}
.kamus-item summary::-webkit-details-marker{display:none}
.kamus-item summary::after{content:"+";position:absolute;right:16px;color:var(--neon)}
.kamus-item[open] summary::after{content:"−"}
.kamus-item p{padding:0 16px 14px;color:var(--muted);font-size:.95rem}
.err-wrap{padding:70px 16px}
.err-code{font-family:var(--font-h);font-size:5rem;color:var(--neon);text-shadow:var(--glow)}
.err-wrap .btn{margin:18px 0}
.crumbs{padding:12px 0 0;font-size:.82rem;color:var(--muted)}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"›";margin-right:6px;color:var(--neon)}
.site-footer{background:var(--panel);border-top:1px solid rgba(192,202,255,.32);padding:36px 0 92px;margin-top:30px}
.foot-grid{display:grid;gap:24px;grid-template-columns:1fr}
.foot-brand p{color:var(--muted);font-size:.9rem;margin:10px 0}
.foot-col h3{font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--neon);margin-bottom:8px;font-weight:700}
.foot-col a{display:block;color:var(--muted);padding:3px 0;font-size:.92rem}
.foot-col a:hover{color:var(--neon);text-decoration:none}
.pill-18{display:inline-block;border:1px solid var(--neon);color:var(--neon);border-radius:999px;padding:2px 12px;font-weight:700;font-size:.85rem}
.foot-bottom{margin-top:24px;padding-top:16px;border-top:1px solid rgba(192,202,255,.22);color:var(--muted);font-size:.85rem}
.float-cta{position:fixed;left:50%;bottom:0;transform:translateX(-50%);z-index:60;display:flex;align-items:center;gap:12px;width:100%;max-width:calc(100vw - 24px);padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:rgba(5,11,24,.92);backdrop-filter:blur(8px);border:1px solid rgba(192,202,255,.45);border-bottom:0;border-radius:14px 14px 0 0}
.float-tag{font-weight:700;color:var(--neon);white-space:nowrap;font-size:.9rem;letter-spacing:.02em;text-shadow:0 0 12px rgba(192,202,255,.5)}
.float-cta .btn{flex:1;min-width:0;text-align:center;white-space:nowrap;animation:cta-blink 1.6s infinite}
@keyframes cta-blink{0%,100%{box-shadow:0 0 8px rgba(192,202,255,.4),0 0 18px rgba(192,202,255,.15);transform:scale(1)}50%{box-shadow:0 0 22px rgba(192,202,255,.9),0 0 44px rgba(192,202,255,.4);transform:scale(1.04)}}
@media (min-width:768px){
  .grid-3{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .check-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:2fr 1fr 1fr 1fr}
  .nav-desktop{display:flex}
  .header-cta{margin-left:0}
  .burger{display:none}
  .m-nav{display:none!important}
}
@media (min-width:1024px){.grid-4{grid-template-columns:repeat(4,1fr)}}
@media (prefers-reduced-motion:reduce){.pulse{animation:none}.sweep-beams i{animation:none;left:12%}.float-cta .btn{animation:none}}