:root{
  --primary:#F97316;
  --primary-dark:#EA580C;
  --primary-soft:#FFF0E2;
  --accent:#FF6B6B;
  --dark:#2B1F17;
  --bg:#FBF6EF;
  --card:#FFFFFF;
  --border:#F2E4D3;
  --text:#2D2118;
  --text-2:#6B5B4E;
  --ok:#2FBF8F;
  --no:#E05B5B;
  --mid:#F0A23C;
  --radius:16px;
  --radius-lg:22px;
  --shadow:0 8px 24px rgba(249,115,22,.10);
  --shadow-hover:0 16px 36px rgba(249,115,22,.18);
  --header-h:64px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
section[id]{scroll-margin-top:calc(var(--header-h) + 10px)}

.header{position:fixed;top:0;left:0;right:0;height:var(--header-h);background:rgba(255,255,255,.94);border-bottom:1px solid var(--border);z-index:100;transition:box-shadow .3s}
.header.scrolled{box-shadow:0 6px 18px rgba(43,31,23,.06)}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:inline-flex;align-items:center;font-size:20px;font-weight:800;color:var(--text);white-space:nowrap;letter-spacing:.5px;padding:6px 0}
.logo::first-letter{color:var(--primary)}
.menu{display:flex;align-items:center;gap:20px}
.menu a{font-size:14px;color:var(--text-2);transition:color .25s;position:relative;white-space:nowrap}
.menu a:hover,.menu a.active{color:var(--primary)}
.menu a.active::after{content:"";position:absolute;left:50%;bottom:-7px;transform:translateX(-50%);width:18px;height:3px;border-radius:3px;background:var(--primary)}
.btn-dl{flex-shrink:0;font-size:12px;font-weight:600;color:#fff;background:var(--primary);padding:6px 14px;border-radius:999px;white-space:nowrap;transition:background .25s,transform .25s}
.btn-dl:hover{background:var(--primary-dark);transform:translateY(-1px)}

.btn{display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;padding:13px 30px;border-radius:999px;transition:transform .25s,box-shadow .25s,background .25s}
.btn-primary{color:#fff;background:var(--primary);box-shadow:0 10px 24px rgba(249,115,22,.28)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 14px 30px rgba(249,115,22,.34)}
.btn-ghost{color:var(--primary);background:var(--primary-soft);border:1px solid rgba(249,115,22,.25)}
.btn-ghost:hover{background:#FFE6CF;transform:translateY(-2px)}

.hero{padding:calc(var(--header-h) + 64px) 0 72px;background:radial-gradient(560px 420px at 85% 12%,rgba(249,115,22,.12),transparent 70%),radial-gradient(480px 380px at 6% 88%,rgba(255,107,107,.08),transparent 70%),var(--bg)}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero h1{font-size:44px;line-height:1.25;font-weight:800;letter-spacing:.5px}
.ver{display:inline-block;margin-left:10px;font-size:15px;font-weight:700;color:var(--primary);background:var(--primary-soft);border:1px solid rgba(249,115,22,.25);padding:4px 12px;border-radius:999px;vertical-align:middle}
.hero-desc{margin:20px 0 32px;font-size:16px;color:var(--text-2);max-width:520px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-img img{width:100%;aspect-ratio:2/3;object-fit:cover;border-radius:var(--radius-lg);box-shadow:0 24px 48px rgba(43,31,23,.16)}

.section{padding:84px 0}
.section-alt{background:var(--card)}
.section-head{text-align:center;max-width:640px;margin:0 auto 48px}
.section-head h2{font-size:32px;font-weight:800;letter-spacing:.5px}
.section-head p{margin-top:12px;font-size:15px;color:var(--text-2)}

.preview-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.preview-grid figure{background:var(--card);border:1px solid var(--border);border-radius:18px;overflow:hidden;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.preview-grid figure:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.preview-grid img{width:100%;aspect-ratio:2/3;object-fit:cover}

.about-text{max-width:820px;margin:0 auto;font-size:15.5px;color:var(--text-2);text-align:center}
.about-text p+p{margin-top:16px}
.about-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px}
.about-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px;text-align:center;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.about-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.about-card h3{font-size:17px;margin-bottom:6px}
.about-card p{font-size:14px;color:var(--text-2)}

.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:transform .3s,box-shadow .3s}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.feature-ic{width:48px;height:48px;border-radius:12px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feature-ic svg{width:24px;height:24px}
.feature-card h3{font-size:17px;margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--text-2)}

.compare-wrap{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.compare-table{width:100%;table-layout:fixed;border-collapse:collapse;font-size:14.5px}
.compare-table th,.compare-table td{padding:16px 12px;text-align:center;border-bottom:1px solid var(--border)}
.compare-table thead th{background:var(--primary-soft);font-size:15px;font-weight:700}
.compare-table thead th.hot{color:var(--primary)}
.compare-table td:first-child{text-align:left;font-weight:600}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table tbody tr:hover td{background:rgba(249,115,22,.04)}
.ok{color:var(--ok);font-weight:700}
.no{color:var(--no);font-weight:700}
.mid{color:var(--mid);font-weight:700}

.stats{background:linear-gradient(135deg,var(--dark),#8A4A1D);color:#fff}
.stats .section-head h2{color:#fff}
.stats .section-head p{color:rgba(255,255,255,.72)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:30px 18px;text-align:center;transition:transform .3s,background .3s}
.stat-card:hover{transform:translateY(-5px);background:rgba(255,255,255,.10)}
.stat-num{font-size:40px;font-weight:800;line-height:1.2}
.stat-num .unit{color:var(--accent)}
.stat-label{margin-top:8px;font-size:14px;color:rgba(255,255,255,.78)}

.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.review-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-ava{width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:#fff;flex-shrink:0}
.ava-1{background:#F97316}
.ava-2{background:#EA580C}
.ava-3{background:#FF6B6B}
.ava-4{background:#F59E0B}
.ava-5{background:#FB923C}
.ava-6{background:#E8633A}
.review-name{font-size:15px;font-weight:700}
.review-stars{color:var(--accent);font-size:13px;letter-spacing:1px;margin-top:2px}
.review-card p{font-size:14px;color:var(--text-2);line-height:1.8}

.update-card{max-width:760px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:36px}
.update-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-bottom:20px;border-bottom:1px solid var(--border)}
.update-ver{font-size:26px;font-weight:800;color:var(--primary)}
.update-ver small{font-size:13px;color:var(--text-2);font-weight:500;margin-left:10px}
.update-time{font-size:13.5px;color:var(--text-2)}
.update-list{list-style:none;margin-top:20px;display:grid;gap:12px}
.update-list li{position:relative;padding-left:22px;font-size:14.5px}
.update-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--primary)}

.faq-wrap{max-width:760px;margin:0 auto;display:grid;gap:14px}
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:box-shadow .3s}
.faq-item.open{box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 22px;background:none;border:none;cursor:pointer;font-size:15.5px;font-weight:600;color:var(--text);text-align:left}
.faq-q .ic{width:26px;height:26px;flex-shrink:0;border-radius:50%;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;transition:transform .3s}
.faq-item.open .faq-q .ic{transform:rotate(45deg)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .35s ease}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 22px 20px;font-size:14px;color:var(--text-2);line-height:1.8}

.download{position:relative;background:linear-gradient(135deg,var(--primary),#F5A54B);color:#fff;text-align:center;overflow:hidden}
.download::before,.download::after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.08)}
.download::before{width:420px;height:420px;top:-180px;right:-120px}
.download::after{width:360px;height:360px;bottom:-160px;left:-110px}
.download .container{position:relative;z-index:1}
.download h1{font-size:34px;font-weight:800;letter-spacing:.5px}
.ver-light{color:#fff;background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.4)}
.dl-meta{margin:16px 0 32px;font-size:14px;color:rgba(255,255,255,.92)}
.dl-btns{display:flex;justify-content:center;gap:18px;flex-wrap:wrap}
.dl-btn{display:inline-flex;align-items:center;justify-content:center;padding:15px 34px;border-radius:999px;font-size:16px;font-weight:700;color:var(--primary);background:#fff;box-shadow:0 12px 30px rgba(0,0,0,.18);transition:transform .25s,box-shadow .25s}
.dl-btn:hover{transform:translateY(-3px);box-shadow:0 18px 38px rgba(0,0,0,.26)}
.dl-tip{margin-top:28px;font-size:14px;color:rgba(255,255,255,.92)}

.footer{background:var(--dark);color:rgba(255,255,255,.7);text-align:center;padding:34px 0;font-size:13.5px}
.footer a{color:#fff;font-weight:600;transition:color .25s}
.footer a:hover{color:var(--accent)}
.footer-sub{margin-top:6px;font-size:12px;color:rgba(255,255,255,.5)}

.back-top{position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;border:none;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 10px 24px rgba(249,115,22,.35);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .3s,transform .3s,visibility .3s,background .25s;z-index:99}
.back-top svg{width:18px;height:18px}
.back-top.show{opacity:1;visibility:visible;transform:none}
.back-top:hover{background:var(--primary-dark)}

@media (max-width:1024px){
  .menu{gap:14px}
  .menu a{font-size:13px}
  .hero-inner{gap:36px}
  .hero h1{font-size:38px}
  .preview-grid{grid-template-columns:repeat(2,1fr);gap:18px}
  .feature-grid,.review-grid{grid-template-columns:repeat(2,1fr);gap:18px}
  .stats-grid{gap:16px}
  .stat-num{font-size:34px}
}
@media (max-width:900px){
  .menu{display:none}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:34px}
  .section-head h2{font-size:26px}
  .hero{padding:calc(var(--header-h) + 36px) 0 48px}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-text{text-align:center}
  .hero-desc{margin-left:auto;margin-right:auto}
  .hero h1{font-size:30px}
  .hero-btns{flex-direction:column;width:100%;gap:14px}
  .hero-btns .btn{width:100%}
  .preview-grid{grid-template-columns:1fr;gap:20px}
  .about-cards{grid-template-columns:1fr;gap:14px}
  .feature-grid,.review-grid{grid-template-columns:1fr;gap:16px}
  .compare-table{font-size:12.5px}
  .compare-table th,.compare-table td{padding:12px 6px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .stat-num{font-size:30px}
  .update-card{padding:26px 20px}
  .update-ver{font-size:22px}
  .faq-q{padding:16px 16px;font-size:14.5px}
  .faq-a-inner p{padding:0 16px 16px}
  .download h1{font-size:26px}
  .dl-meta{font-size:12px;white-space:nowrap}
  .dl-btns{flex-direction:column;width:100%;gap:14px}
  .dl-btn{width:100%}
  .back-top{right:16px;bottom:20px;width:40px;height:40px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .faq-a{transition:none}
  .preview-grid figure,.feature-card,.about-card,.stat-card,.review-card,.btn,.btn-dl,.dl-btn,.back-top{transition:none}
}