:root{
  --bg:#FAFAFB;
  --surface:#FFFFFF;
  --surface-2:#F3F4F6;
  --text:#111827;
  --muted:#6B7280;
  --border:#E6E8EB;
  --brand:#78C257;
  --brand-2:#16A34A;
  --shadow:0 10px 24px rgba(17,24,39,.08);
  --radius:14px;
  --radius-sm:12px;
  --container:1120px;
}

*{box-sizing:border-box}
html,body{height:100%}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  background:var(--bg);
  font-family:"黑体","Heiti SC","STHeiti","SimHei",-apple-system,BlinkMacSystemFont,system-ui,"Helvetica Neue",Arial,sans-serif;
  line-height:1.6;
  font-weight:500;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

a{color:inherit;text-decoration:none}
button{font:inherit}

.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:48px 0;scroll-margin-top:92px}
.section-title{margin:0 0 12px;font-size:26px;line-height:1.2;letter-spacing:-.02em;text-align:left}
.section-desc{margin:0 0 28px;color:var(--muted);font-size:12px;font-weight:600;text-align:left;padding-left:2px}

.topbar{
  position:sticky;top:0;z-index:20;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--border);
}
.topbar-inner{display:flex;align-items:center;justify-content:flex-start;height:72px}

.brand{display:flex;align-items:center;gap:10px;min-width:230px}
.brand-badge{width:22px;height:22px;border-radius:0;background:transparent;display:grid;place-items:center;box-shadow:none}
.brand-badge svg{width:22px;height:22px}
.brand-badge img{width:22px;height:22px}
.brand-name{display:flex;align-items:baseline;gap:10px}
.brand-name strong{font-size:17px}
.brand-name span{font-size:14px;color:var(--muted);font-weight:700}

.nav{display:flex;align-items:center;gap:24px;margin-left:auto}
.nav a{
  font-size:13px;
  color:var(--muted);
  font-weight:700;
  padding:10px 0;
  border-bottom:2px solid transparent;
}
.nav a[aria-current="true"]{color:var(--text);border-bottom-color:var(--brand-2)}

.nav-right{display:flex;align-items:center;gap:10px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:42px;padding:0 18px;border-radius:999px;
  border:1px solid var(--border);
  background:var(--surface);
  font-weight:700;font-size:13px;
  transition:background-color .15s ease,border-color .15s ease,box-shadow .15s ease,transform .15s ease;
}
.btn:hover{background:var(--surface-2)}
.btn:active{transform:translateY(1px)}
.btn:focus-visible{outline:2px solid rgba(22,163,74,.35);outline-offset:2px}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(120,194,87,.28)}
.btn-primary:hover{box-shadow:0 10px 22px rgba(120,194,87,.32)}
.btn-ghost{background:transparent}
.btn-ghost:hover{background:rgba(17,24,39,.04)}

.mobile-toggle{display:none}
.mobile-panel{display:none}

.hero{padding:52px 0 38px}
.hero-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:stretch}
.hero h1{margin:0 0 10px;font-size:28px;line-height:1.18;letter-spacing:-.015em}
.hero p{margin:0;color:var(--muted);font-size:15px;font-weight:600}
.hero-tagline{font-size:18px}
.hero-split{display:grid;grid-template-columns:.66fr 1.34fr;gap:20px;align-items:stretch}
.hero-video{padding:18px;display:flex}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.hero-cta .btn{height:63px;padding:0 22px;font-size:15px}

@media (min-width: 981px){
  .hero-left{display:flex;flex-direction:column;height:100%}
  .hero-left .hero-points{flex:1;display:flex;flex-direction:column;justify-content:center}
}

@media (min-width: 1100px){
  .hero .container{max-width:var(--container)}
}

.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
}
.card.shadow{box-shadow:var(--shadow)}
.card{transition:box-shadow .15s ease,border-color .15s ease}
.card.shadow:hover{box-shadow:0 12px 26px rgba(17,24,39,.10);border-color:rgba(229,231,235,.95)}

.hero-points{margin-top:22px;padding:18px}
.hero-points .point .txt strong{font-size:16px}
.point{display:flex;gap:12px;padding:12px 10px;border-radius:12px}
.point:hover{background:var(--surface-2)}
.point .icon{width:26px;height:26px;display:grid;place-items:center;flex:0 0 auto}
.point .icon svg{width:22px;height:22px}
.point .txt strong{display:block;font-size:14px;letter-spacing:-.01em}
.point .txt span{display:block;margin-top:3px;color:var(--muted);font-size:12px;font-weight:700}

.hero-meta{margin-top:14px;padding:16px 18px}
.meta-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.meta-row strong{font-size:13px}
.meta-row span{font-size:12px;color:var(--muted);font-weight:800}

.mock{padding:18px;display:flex;flex-direction:column;height:100%}
.mock-top{height:28px;border-radius:14px;background:var(--surface-2);border:1px solid var(--border);display:flex;align-items:center;gap:10px;padding:0 12px}
.dot{width:10px;height:10px;border-radius:99px}
.dot.red{background:#EF4444}.dot.yellow{background:#F59E0B}.dot.green{background:#10B981}
.mock-body{margin-top:14px;border-radius:16px;background:#F3F4F6;border:1px solid var(--border);padding:20px;flex:1;display:flex}
.mock-shot{min-height:204px;border-radius:18px;background:var(--surface);border:1px solid var(--border);display:flex;flex:1;gap:10px;padding:20px}
.mock-shot img{width:120px;height:120px;object-fit:contain}
.mock-shot strong{font-size:13px}
.video-slot{width:100%;border-radius:14px;background:#0B1220;border:1px solid var(--border);overflow:hidden;flex:1}
.video-embed{position:relative;width:100%;aspect-ratio:16/9;background:#0B1220}
@supports not (aspect-ratio: 16 / 9){
  .video-embed::before{content:"";display:block;padding-top:56.25%}
}
.video-cover{position:absolute;inset:0;display:block;width:100%;height:100%;padding:0;border:0;background:transparent;cursor:pointer}
.video-cover:focus-visible{outline:2px solid rgba(22,163,74,.35);outline-offset:2px}
.video-cover img{width:100%;height:100%;object-fit:cover;object-position:left center;display:block}
.video-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg, rgba(0,0,0,.08), rgba(0,0,0,.26));opacity:.9;transition:opacity .15s ease}
.video-cover:hover::after{opacity:.75}

.video-cover-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:66px;height:66px;border-radius:999px;background:rgba(0,0,0,.35);border:1px solid rgba(255,255,255,.22);display:grid;place-items:center;color:#fff;transition:transform .15s ease,background-color .15s ease}
.video-cover:hover .video-cover-play{transform:translate(-50%,-50%) scale(1.04);background:rgba(0,0,0,.45)}
.video-cover-play svg{width:28px;height:28px}

.video-mount{position:absolute;inset:0}
.video-mount[hidden]{display:none}
.video-mount iframe{width:100%;height:100%;display:block;border:0}

[data-playing="true"] .video-cover{display:none}
[data-playing="true"] .video-mount{display:block}
.video-play{width:52px;height:52px;border-radius:999px;background:rgba(120,194,87,.10);border:1px solid rgba(120,194,87,.26);display:grid;place-items:center;color:var(--brand-2)}
.video-play svg{width:26px;height:26px}
.video-text{display:grid;gap:4px;justify-items:center}
.video-text strong{font-size:13px}
.video-text span{font-size:12px;color:var(--muted);font-weight:800}
.mock-sub{margin-top:14px;display:grid;gap:12px}
.mock-sub .row{padding:14px;border-radius:14px;background:var(--surface);border:1px solid var(--border)}
.mock-sub .row small{display:block;color:var(--muted);font-weight:900}
.mock-sub .row strong{display:block;margin-top:6px;font-size:12px}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}
.grid-6{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}

.feature-card{padding:18px}
.feature-head{display:flex;align-items:flex-start;gap:12px}
.pill{
  display:inline-flex;align-items:center;justify-content:center;
  height:26px;padding:0 12px;border-radius:999px;
  background:rgba(120,194,87,.08);
  border:1px solid rgba(120,194,87,.20);
  color:#166534;font-size:11px;font-weight:700;
}
.badge{width:40px;height:40px;border-radius:12px;background:#E5F5E9;display:grid;place-items:center;flex:0 0 auto}
.badge svg{width:24px;height:24px}
.feature-title{margin:2px 0 2px;font-size:15px;font-weight:900;letter-spacing:-.01em}
#why .feature-title{font-size:17px;font-weight:900;position:relative;padding-left:14px}
#why .feature-title::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:6px;height:18px;border-radius:3px;background:var(--brand)}
#features .feature-title{position:relative;padding-left:14px}
#features .feature-title::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:6px;height:18px;border-radius:3px;background:var(--brand)}
.feature-desc{margin:0;color:var(--muted);font-size:12px;font-weight:600}
.feature-list{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:8px}
.feature-list li{font-size:12px;font-weight:650}
.feature-list li::before{content:"• ";color:var(--brand-2)}

.scenario-card{padding:18px}
.scenario-title{margin:2px 0 2px;font-size:15px;font-weight:900;letter-spacing:-.01em}
#scenarios .scenario-title{position:relative;padding-left:14px}
#scenarios .scenario-title::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:6px;height:18px;border-radius:3px;background:var(--brand)}
.scenario-desc{margin:0;color:var(--muted);font-size:12px;font-weight:600}
.scenario-list{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:8px}
.scenario-list li{font-size:12px;font-weight:650}
.scenario-list li::before{content:"• ";color:var(--brand-2)}

.shot-wall{padding:18px}
.shot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:14px}
.shot{border-radius:14px;background:#F3F4F6;border:1px solid var(--border);height:200px;display:grid;place-items:center;color:var(--muted);font-weight:900;font-size:12px}
.shot.small{height:86px;background:var(--surface-2)}
.workflow{margin-top:18px;display:grid;grid-template-columns:repeat(3,1fr);gap:7px}
.step{border-radius:14px;background:#F3F4F6;border:1px solid var(--border);padding:16px;min-height:140px;position:relative}
.step strong{display:block;font-size:12px}
.step span{display:block;margin-top:6px;color:var(--muted);font-size:12px;font-weight:800}
.step .step-icon{position:absolute;right:14px;top:12px;width:36px;height:36px}
.step .step-icon svg{width:36px;height:36px}

.download-grid{display:grid;grid-template-columns:1fr;gap:9px}
.download-card{padding:18px}
.download-card h3{margin:0;font-size:16px}
.download-card p{margin:6px 0 0;color:var(--muted);font-size:12px;font-weight:800}
.dl-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}
.kv{margin-top:16px;border-radius:14px;background:var(--surface-2);border:1px solid var(--border);padding:14px}
.kv .row{display:flex;gap:16px;align-items:baseline;padding:6px 0}
.kv .k{width:74px;color:var(--muted);font-size:12px;font-weight:900}
.kv .v{font-size:12px;font-weight:900}
.steps{display:grid;gap:10px;margin-top:18px}
.step-row{border-radius:12px;background:var(--surface-2);border:1px solid var(--border);padding:12px;display:flex;gap:12px;align-items:center}
.step-row .n{width:22px;height:22px;border-radius:99px;background:var(--brand);color:#fff;font-weight:900;display:grid;place-items:center;font-size:12px}
.step-row .t{font-size:12px;font-weight:900}
.verify{margin-top:18px}
.verify .box{border-radius:14px;background:var(--surface-2);border:1px solid var(--border);padding:14px}
.verify .line{display:flex;gap:14px;padding:7px 0}
.verify .label{width:62px;font-size:12px;font-weight:900}
.verify .value{flex:1;color:var(--muted);font-size:12px;font-weight:800;word-break:break-all}

.faq-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:9px}
.faq-card{padding:18px}
.faq-item{border-radius:12px;background:var(--surface-2);border:1px solid var(--border);padding:14px}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer}
.faq-q strong{font-size:12px}
.faq-a{display:none;margin-top:10px;color:var(--muted);font-size:12px;font-weight:800}
.faq-item[data-open="true"]{background:var(--surface)}
.faq-item[data-open="true"] .faq-a{display:block}
.faq-plus{font-weight:900;color:#9CA3AF}
.contact-card{padding:18px}
.contact-card h3{margin:0;font-size:16px}
.contact-card p{margin:6px 0 0;color:var(--muted);font-size:12px;font-weight:800}
.contact-box{margin-top:18px;border-radius:14px;background:var(--surface-2);border:1px solid var(--border);padding:14px}
.contact-box .label{color:var(--muted);font-size:12px;font-weight:900}
.contact-box .value{margin-top:6px;font-size:12px;font-weight:900}
.security-box{margin-top:14px;border-radius:14px;background:var(--surface);border:1px solid var(--border);padding:14px}
.security-box h4{margin:0;font-size:13px}
.security-box ul{margin:10px 0 0;padding:0;list-style:none;display:grid;gap:8px}
.security-box li{font-size:12px;font-weight:800}
.security-box li::before{content:"• ";color:var(--brand-2)}

.roadmap{margin-top:18px;padding:18px}
.timeline{position:relative;margin-top:18px}
.timeline::before{content:"";position:absolute;left:8px;top:0;bottom:0;width:4px;border-radius:4px;background:var(--border)}
.milestone{position:relative;padding-left:32px;margin:0 0 18px}
.milestone:last-child{margin-bottom:0}
.milestone::before{content:"";position:absolute;left:0;top:5px;width:20px;height:20px;border-radius:99px;background:var(--brand);box-shadow:var(--shadow)}
.milestone .date{font-size:12px;font-weight:900}
.milestone .what{margin-top:4px;color:var(--muted);font-size:12px;font-weight:800}

.footer{padding:36px 0;border-top:1px solid var(--border);background:var(--surface)}
.footer-grid{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}
.footer small{color:var(--muted);font-weight:800}
.footer a{color:var(--muted);font-weight:900}

@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr}
  .hero-split{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .grid-6{grid-template-columns:1fr}
  .download-grid{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .shot-grid{grid-template-columns:1fr}
  .workflow{grid-template-columns:1fr}
  .nav{display:none}
  .nav-right{margin-left:auto}
  .mobile-toggle{display:inline-flex}
  .mobile-panel{
    display:none;
    border-top:1px solid var(--border);
    background:rgba(249,250,251,.92);
    backdrop-filter:saturate(180%) blur(18px);
  }
  .mobile-panel[data-open="true"]{display:block}
  .mobile-panel .container{padding:12px 24px 18px}
  .mobile-panel a{display:block;padding:10px 0;font-size:14px;font-weight:900;color:#111827}
}