:root{
  --bg: #0b1020;
  --bg-soft:#0f1630;
  --card:#101936;
  --primary:#5b8cff;
  --primary-2:#7aa3ff;
  --accent:#9d7bff;
  --accent-2:#69e0ff;
  --text:#e7ecff;
  --muted:#a6b0d6;
  --success:#2ecc71;
  --danger:#ff5c77;
  --warning:#ffcc66;
  --shadow:0 10px 30px rgba(0,0,0,0.35);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; font-family: Inter, "Noto Sans SC", system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(1200px 700px at 85% -10%, rgba(90,136,255,0.14), transparent 60%),
    radial-gradient(900px 600px at 10% -10%, rgba(157,123,255,0.12), transparent 60%),
    linear-gradient(180deg, #0b1020 0%, #0d1224 60%, #0c1328 100%);
  color:var(--text);
  line-height:1.6;
  position:relative;
  overflow-x:hidden;
  -webkit-tap-highlight-color: transparent;
}
body::after{
  content:"";
  position:fixed; inset:0; pointer-events:none; z-index:0;
  background-image: radial-gradient(rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 3px 3px;
  mix-blend-mode: overlay;
  opacity:0.15;
}
.container{max-width:1100px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
.site-header{position:sticky;top:0;backdrop-filter: blur(10px); background:rgba(10,15,30,0.6); border-bottom:1px solid rgba(255,255,255,0.06); z-index:10}
.brand{display:flex;align-items:center;gap:14px;padding:14px 0}
.logo{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--accent));display:grid;place-items:center;font-weight:800; color:#0b1020; text-shadow:0 1px 0 rgba(255,255,255,0.3)}
.titles h1{margin:0}
.subtitle{color:var(--muted);margin:0}

.hero{padding:56px 0 16px;}
.hero::before{
  content:""; position:absolute; inset:-20% -10% auto -10%; height:56%; z-index:0; filter: blur(32px);
  background: conic-gradient(from 200deg, rgba(123,163,255,0.35), rgba(105,224,255,0.28), rgba(157,123,255,0.32), rgba(123,163,255,0.35));
  mask: radial-gradient(60% 100% at 50% 0%, #000 60%, transparent 100%);
  animation: auroraMove 16s ease-in-out infinite alternate;
}
.hero-inner{display:grid;grid-template-columns:1.2fr 0.8fr;gap:28px;align-items:center;position:relative;z-index:1}
.hero-text h2{font-size:clamp(28px,4vw,44px);margin:0 0 8px;letter-spacing:.3px}
.hero-text p{color:var(--muted);margin:0 0 12px}
.bullets{list-style:none;padding:0;margin:12px 0 0;display:flex;flex-wrap:wrap;gap:10px}
.bullets li{padding:6px 10px;border:1px solid rgba(255,255,255,0.1);border-radius:999px;background:rgba(255,255,255,0.04);backdrop-filter: blur(2px)}
.hero-art{position:relative;height:200px}
.orb{position:absolute;border-radius:50%;filter: blur(24px);opacity:0.65; animation: float 10s ease-in-out infinite}
.orb-1{width:190px;height:190px;left:10%;top:10%;background:radial-gradient(circle at 30% 30%, var(--primary), transparent 60%); animation-duration: 12s}
.orb-2{width:170px;height:170px;right:10%;bottom:0;background:radial-gradient(circle at 30% 30%, var(--accent), transparent 60%); animation-duration: 10s}
.orb-3{width:110px;height:110px;left:55%;top:60%;background:radial-gradient(circle at 30% 30%, var(--accent-2), transparent 60%); animation-duration: 8s}

.section-title{font-size:24px;margin:28px 0;text-align:center}
.features{padding:12px 0 36px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{position:relative; isolation:isolate; background:linear-gradient(180deg, rgba(16,25,54,0.65), rgba(16,25,54,0.28)); border:1px solid transparent; border-radius:16px; padding:18px; box-shadow: var(--shadow); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease, background .25s ease; background-image: linear-gradient(180deg, rgba(16,25,54,0.7), rgba(16,25,54,0.35)), linear-gradient(135deg, rgba(90,140,255,0.55), rgba(157,123,255,0.45)); background-origin: border-box; background-clip: padding-box, border-box; will-change: transform}
.card:hover{transform: translateY(-4px); box-shadow: 0 14px 44px rgba(0,0,0,0.5)}
.card:active{transform: translateY(-1px); filter: brightness(1.02)}
.card h4{margin:8px 0 6px}
.card p{margin:0;color:var(--muted)}
.icon{width:24px;height:24px;color:var(--primary); filter: drop-shadow(0 0 6px rgba(91,140,255,0.45))}
.card::after{content:""; position:absolute; inset:-1px; border-radius:16px; background: radial-gradient(400px 120px at 20% -10%, rgba(122,163,255,0.22), transparent), radial-gradient(300px 100px at 120% 110%, rgba(157,123,255,0.18), transparent); z-index:-1}
.note{margin-top:14px;color:var(--muted); text-align:center}

.reservation{padding:12px 0 72px}
.reservation-card{display:grid;grid-template-columns:1fr 1fr;gap:16px; background:linear-gradient(135deg, rgba(90,140,255,0.12), rgba(157,123,255,0.12)); border:1px solid transparent; border-radius:18px;padding:20px;box-shadow: 0 18px 60px rgba(0,0,0,0.45); backdrop-filter: blur(10px); background-image: linear-gradient(180deg, rgba(16,25,54,0.65), rgba(16,25,54,0.35)), linear-gradient(135deg, rgba(90,140,255,0.55), rgba(157,123,255,0.45)); background-origin: border-box; background-clip: padding-box, border-box}
.reservation-info h3{margin:0 0 8px;font-size:22px}
.price{display:flex;align-items:center;gap:12px;margin:8px 0 12px; flex-wrap:wrap; justify-content:center}
.price .original{font-size:18px;text-decoration:line-through;color:var(--muted)}
.price .mystery{font-size:36px;font-weight:900;color:var(--warning);letter-spacing:1px}
.price .revealed{font-size:32px;font-weight:900;color:#ffd966}
.price .hint{font-size:14px;color:var(--muted)}
.countdown{background:rgba(0,0,0,0.25);border:1px solid rgba(255,255,255,0.12);border-radius:12px;padding:12px}
.timer{font-size:18px;font-variant-numeric:tabular-nums}

/* 表单居中与主次分明 */
.reserve-form{display:grid;gap:10px; align-content:start}
.reserve-form label{font-weight:600}
.reserve-form input{background:#0b1228;color:var(--text);border:1px solid rgba(255,255,255,0.14);border-radius:12px;padding:12px;outline:none; transition: border-color .2s ease, box-shadow .2s ease, transform .06s ease}
.reserve-form input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(91,140,255,0.25)}
.reserve-form input:active{transform: scale(0.995)}
.cta{position:relative; background:linear-gradient(135deg,var(--primary),var(--accent));border:none;color:white;border-radius:14px;padding:12px 18px;font-weight:800;cursor:pointer; box-shadow: 0 10px 24px rgba(91,140,255,0.25); transition: transform .18s ease, box-shadow .18s ease, filter .18s ease; overflow:hidden; text-align:center; touch-action: manipulation}
.cta::before{content:""; position:absolute; inset:0; background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.25), transparent 70%); transform: translateX(-120%); transition: transform .5s ease}
.cta:hover{transform: translateY(-1px); box-shadow: 0 14px 38px rgba(91,140,255,0.35)}
.cta:hover::before{transform: translateX(120%)}
.cta:active{transform: translateY(0); filter: brightness(1.05)}
.cta[disabled]{opacity:0.55;cursor:not-allowed; filter: grayscale(10%)}
.cta.secondary{background:linear-gradient(135deg, rgba(255,255,255,0.12), rgba(255,255,255,0.08)); color:#fff; border:1px solid rgba(255,255,255,0.16)}
.form-msg{min-height:20px}
.success{color:var(--success)}
.error{color:var(--danger)}

/* 售后安装包区块 */
.aftercare{padding:12px 0 80px}
.aftercare-card{background:linear-gradient(180deg, rgba(16,25,54,0.7), rgba(16,25,54,0.35)); border:1px solid rgba(255,255,255,0.12); border-radius:18px; padding:22px; display:grid; gap:14px; box-shadow: var(--shadow); text-align:center}
.aftercare-desc{color:var(--muted); margin:0 auto; max-width:720px}
.aftercare-actions{display:flex; justify-content:center}

/* 滚动 reveal 动画（延迟队列与更柔和阈值） */
.reveal{opacity:0; transform: translateY(12px); transition: opacity .6s ease, transform .6s ease}
.reveal.visible{opacity:1; transform: translateY(0)}
.reveal[data-delay]{transition-delay: var(--delay, 0ms)}

/* Modal */
.modal{position:fixed; inset:0; display:none; align-items:center; justify-content:center; z-index:1000}
.modal.active{display:flex}
.modal-backdrop{position:absolute; inset:0; background:rgba(0,0,0,0.55); backdrop-filter: blur(3px)}
.modal-dialog{position:relative; z-index:1; width:min(520px, 92vw); background:linear-gradient(180deg, rgba(16,25,54,0.8), rgba(16,25,54,0.45)); border:1px solid rgba(255,255,255,0.12); border-radius:16px; box-shadow: 0 20px 60px rgba(0,0,0,0.6); padding:18px}
.modal-close{position:absolute; right:10px; top:8px; background:transparent; color:#fff; border:none; font-size:20px; cursor:pointer}
.modal-text{color:var(--muted)}
.share-row{display:grid; grid-template-columns:1fr auto; gap:8px; margin-top:10px}
.share-row input{background:#0b1228;color:var(--text);border:1px solid rgba(255,255,255,0.14);border-radius:10px;padding:10px}
#copyToast{margin-top:8px; min-height:20px; color:var(--success)}

/* 更细的响应式断点，提高多设备适配 */
@media (max-width: 1200px){
  .container{max-width:1000px}
}
@media (max-width: 992px){
  .container{max-width:860px}
  .hero-inner{grid-template-columns:1fr}
  /* 新增：隐藏右侧视觉，收紧上内边距，减少留白 */
  .hero-art{display:none}
  .hero{padding:40px 0 8px}
}
@media (max-width: 900px){
  .reservation-card{grid-template-columns:1fr}
  .grid{grid-template-columns:1fr 1fr}
  .price{justify-content:center}
}
@media (max-width: 680px){
  .grid{grid-template-columns:1fr}
  .hero{padding:40px 0 8px}
  .hero::before{height:46%; filter: blur(26px)}
  .hero-art{height:150px}
  .orb-1{display:none}
  .orb-2{width:130px;height:130px}
  .orb-3{width:90px;height:90px}
}
@media (max-width: 520px){
  .hero{padding-top:32px}
  .reservation-card{padding:14px}
  .hero-text h2{font-size:clamp(22px,6vw,28px)}
  .hero-text p{font-size:14px}
  .bullets{gap:8px}
  .bullets li{padding:5px 8px}
}

/* 平板横屏优化：字号与留白 */
@media (min-width: 768px) and (max-width: 1024px) and (orientation: landscape){
  .hero{padding:64px 0 24px}
  .hero-text h2{font-size:clamp(24px,3vw,38px)}
  .container{max-width:960px}
  .grid{gap:14px}
  .reservation-card{gap:14px}
}

/* 进一步细化小机型（窄屏） */
@media (max-width: 380px){
  .container{padding:0 14px}
  .price .mystery{font-size:26px}
  .price .revealed{font-size:24px}
  .cta{padding:10px 14px}
}

@keyframes float{0%{transform: translateY(0)}50%{transform: translateY(-8px)}100%{transform: translateY(0)}}
@keyframes auroraMove{0%{transform: translateY(0)}100%{transform: translateY(12px)}}

@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{animation:none !important; transition:none !important}
}