/* Premium dark UI (same as SEO version) */
:root{--bg:#0b1020;--bg-2:#0e1428;--glass: rgba(255,255,255,.06);--card: rgba(255,255,255,.08);--stroke: rgba(255,255,255,.12);--brand:#8ef6d4;--brand-2:#51dfc2;--accent:#ffd166;--text:#eef2ff;--muted:#9aa4c7;--shadow: 0 20px 60px rgba(0,0,0,.45);--radius-xl:28px;--radius:16px}
*{box-sizing:border-box}html,body{margin:0;padding:0;background:radial-gradient(1200px 800px at 10% 10%, #15213f 0%, #0b1020 55%, #090c19 100%);color:var(--text)}
body{font-family: ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,"PingFang TC","Noto Sans TC","Microsoft JhengHei",sans-serif;line-height:1.7}
img{max-width:100%;display:block}a{color:var(--brand);text-decoration:none}a:hover{opacity:.92}
.container{max-width:1240px;margin:0 auto;padding:0 24px}.section{padding:72px 0}
h1,h2,h3{line-height:1.2;margin:0 0 14px}h1{font-size:clamp(34px,5vw,58px);letter-spacing:.3px}h2{font-size:clamp(26px,3.6vw,38px)}h3{font-size:clamp(18px,2.4vw,22px)}
p{margin:.6em 0;color:#dae0ff}small,.kv{color:var(--muted)}
.glow{box-shadow: 0 0 0 1px var(--stroke), 0 10px 40px rgba(81,223,194,.12), inset 0 0 0 1px rgba(255,255,255,.04)}
.glass{background:var(--glass);backdrop-filter: blur(12px);border:1px solid var(--stroke)}
.card{background:var(--card);border:1px solid var(--stroke);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.card-xl{border-radius:var(--radius-xl);padding:26px}
.grid{display:grid;gap:22px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}
.header{position:sticky;top:0;z-index:50;background:linear-gradient(180deg, rgba(11,16,32,.9), rgba(11,16,32,.5));backdrop-filter:blur(10px);border-bottom:1px solid var(--stroke)}
.nav{display:flex;align-items:center;justify-content:space-between;height:78px}
.brand{display:flex;gap:14px;align-items:center}

.brand-logo{width:38px;height:44px;border-radius:14px;box-shadow:0 8px 24px rgba(142,246,212,.25)}

.brand-name{font-weight:900;letter-spacing:.4px}
.menu{display:flex;gap:8px;align-items:center}.menu a{padding:10px 14px;border-radius:12px;border:1px solid transparent}.menu a.active{border-color:var(--stroke);background:rgba(255,255,255,.04)}.menu a:hover{border-color:var(--stroke)}
.menu-toggle{display:none;border:1px solid var(--stroke);padding:8px 10px;border-radius:12px;background:transparent;color:var(--text)}
.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center}
.badge{display:inline-flex;align-items:center;gap:8px;border:1px dashed var(--stroke);padding:8px 12px;border-radius:999px;font-size:14px;color:var(--brand);background:rgba(142,246,212,.06)}
.cta{display:flex;gap:14px;margin-top:18px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;padding:12px 18px;border-radius:14px;border:1px solid var(--stroke);background:transparent;color:var(--text);font-weight:700;transform:translateZ(0);transition:all .2s ease}
.btn:hover{transform:translateY(-1px)}.btn-primary{background:linear-gradient(135deg,#51dfc2,#8ef6d4);color:#061015;border-color:transparent}.btn-ghost{background:rgba(255,255,255,.05)}
.tag{display:inline-block;border:1px solid var(--stroke);padding:4px 10px;border-radius:999px;font-size:12px;color:var(--muted)}
.prod{display:flex;flex-direction:column;height:100%}.prod .thumb{aspect-ratio:4/3;border-radius:18px;background:linear-gradient(135deg, rgba(81,223,194,.18), rgba(255,209,102,.12));border:1px solid var(--stroke);display:flex;align-items:center;justify-content:center;font-weight:800;color:var(--brand);letter-spacing:.4px}
.prod .meta{margin-top:12px;display:flex;justify-content:space-between;align-items:center}
.feature{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}.feature .img{border-radius:22px;overflow:hidden;border:1px solid var(--stroke)}
.footer{margin-top:50px;border-top:1px solid var(--stroke);background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.02))}
.footer-inner{display:grid;grid-template-columns:1.4fr .6fr;gap:20px;padding:30px 0}
.form{display:grid;gap:14px;max-width:680px}input,textarea,select{width:100%;padding:14px 16px;border-radius:14px;border:1px solid var(--stroke);background:rgba(255,255,255,.04);color:var(--text)}textarea{min-height:120px;resize:vertical}
.alert{border:1px solid var(--stroke);background:rgba(142,246,212,.07);border-left:4px solid var(--brand);padding:12px;border-radius:12px;color:var(--text)}
.fade-up{opacity:0;transform:translateY(10px);animation:fadeUp .6s ease forwards}.fade-up:nth-child(2){animation-delay:.08s}.fade-up:nth-child(3){animation-delay:.16s}@keyframes fadeUp{to{opacity:1;transform:none}}
@media (max-width:1000px){.hero{grid-template-columns:1fr}.feature{grid-template-columns:1fr}.grid-4{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.menu{display:none}.menu.open{display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:10px 0}.menu-toggle{display:inline-flex}.grid-3,.grid-4{grid-template-columns:1fr}}