:root{
  --a:#3275F6;
  --b:#8C5AF4;
  --c:#F06DBE;
  --soft:#F5F8FF;
  --ink:#111D35;
  --muted:#53627A;
  --line:rgba(20,35,65,.08);
  --max:1180px;
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:#fff;
  color:var(--ink);
  font-family:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.75;
}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%;height:auto}
button{font:inherit;border:0;background:none;cursor:pointer}
.wrap{width:min(calc(100% - 40px),var(--max));margin:auto}

header{
  position:sticky;top:0;z-index:30;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  box-shadow:0 1px 0 var(--line);
}
.head{
  min-height:74px;
  display:grid;
  grid-template-columns:auto 1fr auto;
  gap:24px;
  align-items:center;
}
.brand{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800}
.brand img{width:40px;height:40px}
nav{display:flex;justify-content:center;gap:24px;flex-wrap:wrap}
nav a{font-size:14px;font-weight:700;color:var(--muted)}
nav a.active,nav a:hover{color:var(--a)}
.menu-toggle{display:none;width:42px;height:42px;border-radius:12px;background:var(--soft)}
.menu-toggle span{display:block;width:18px;height:2px;margin:4px auto;background:var(--ink)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 26px;border-radius:999px;
  background:linear-gradient(135deg,var(--a),var(--b));
  color:#fff;font-weight:800;box-shadow:0 10px 24px rgba(50,117,246,.22);
  transition:transform .2s ease,box-shadow .2s ease;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 14px 28px rgba(50,117,246,.28)}
.btn.ghost{background:#fff;color:var(--a);border:1px solid rgba(50,117,246,.25);box-shadow:none}
.btn.light{background:#fff;color:var(--a);box-shadow:none}

.hero{
  padding:78px 0 56px;
  background:
    radial-gradient(circle at 15% 20%,rgba(140,90,244,.12),transparent 28%),
    radial-gradient(circle at 85% 10%,rgba(50,117,246,.14),transparent 30%),
    linear-gradient(180deg,#F5F8FF 0%,#fff 70%);
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;background:#fff;
  border:1px solid var(--line);color:var(--a);font-size:13px;font-weight:800;
}
.hero h1{
  margin:18px 0 0;font-size:clamp(42px,5vw,68px);
  line-height:1.08;letter-spacing:-.04em;
}
.hero h1 span{color:var(--a)}
.hero .lead{margin:20px 0 0;color:var(--muted);font-size:17px;max-width:560px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero-note{margin-top:16px;color:var(--muted);font-size:14px}
.hero-visual{
  position:relative;min-height:420px;border-radius:28px;overflow:hidden;
  background:linear-gradient(160deg,#EAF1FF,#F3ECFF);
  box-shadow:0 28px 60px rgba(49,84,180,.16);
}
.hero-visual img{
  width:100%;height:100%;min-height:420px;object-fit:cover;display:block;
}
.hero-visual-inner{position:absolute;inset:auto 18px 18px 18px;padding:0}
.hero-panel{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.hero-card{
  background:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.65);
  backdrop-filter:blur(8px);border-radius:14px;padding:12px;color:var(--ink);
  box-shadow:0 8px 20px rgba(17,29,53,.08);
}
.hero-card strong{display:block;font-size:18px;color:var(--a)}
.hero-card span{font-size:12px;color:var(--muted)}
.cover-media{
  margin-top:28px;border-radius:28px;overflow:hidden;
  border:1px solid var(--line);box-shadow:0 16px 40px rgba(17,29,53,.06);
}
.cover-media img{width:100%;height:clamp(220px,32vw,360px);object-fit:cover}
.inner-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}
.inner-hero-media{
  border-radius:28px;overflow:hidden;border:1px solid var(--line);
  background:#F5F8FF;box-shadow:0 18px 40px rgba(49,84,180,.12);
}
.inner-hero-media img{width:100%;height:100%;min-height:320px;object-fit:cover}

.stats{padding:10px 0 40px}
.stats-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
  padding:22px;border-radius:24px;background:#fff;
  border:1px solid var(--line);box-shadow:0 12px 40px rgba(17,29,53,.05);
}
.stat{text-align:center;padding:10px}
.stat strong{display:block;font-size:34px;color:var(--a)}
.stat span{color:var(--muted);font-size:14px}

.section{padding:78px 0}
.section.alt{background:linear-gradient(180deg,#F8FAFD,#fff)}
.section-head{max-width:760px;margin-bottom:34px}
.section h2{margin:0;font-size:clamp(30px,3.6vw,46px);line-height:1.18;letter-spacing:-.03em}
.section .lead{margin:12px 0 0;color:var(--muted);font-size:16px}

.feature-row{
  display:grid;grid-template-columns:1.1fr .9fr;gap:42px;align-items:center;
  margin-top:28px;padding:34px;border-radius:28px;background:#fff;
  border:1px solid var(--line);
}
.feature-row.reverse{grid-template-columns:.9fr 1.1fr}
.feature-row.reverse .feature-copy{order:2}
.feature-row.reverse .feature-media{order:1}
.feature-copy small{color:var(--c);font-weight:800;font-size:13px}
.feature-copy h3{margin:8px 0 12px;font-size:30px;line-height:1.25}
.feature-copy p{margin:0;color:var(--muted)}
.feature-media{
  min-height:260px;border-radius:22px;overflow:hidden;
  background:#EEF3FF;padding:0;
}
.feature-media img{
  width:100%;height:100%;min-height:260px;object-fit:cover;display:block;
}
.feature-media .big-icon{width:120px;height:120px;margin:auto}

.promo{
  margin-top:28px;padding:36px;border-radius:28px;color:#fff;
  background:linear-gradient(135deg,var(--a),var(--b));
  display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center;
}
.promo h3{margin:0;font-size:32px}
.promo ul{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:10px}
.promo li{position:relative;padding-left:26px;color:rgba(255,255,255,.92)}
.promo li:before{content:"✓";position:absolute;left:0;font-weight:800}
.promo-side{background:rgba(255,255,255,.12);border-radius:20px;padding:24px;border:1px solid rgba(255,255,255,.18)}
.promo-side p{margin:0 0 16px;color:rgba(255,255,255,.9)}

.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}
.why-card{
  padding:24px;border-radius:22px;background:#fff;border:1px solid var(--line);
  transition:transform .2s ease,box-shadow .2s ease;
}
.why-card:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(17,29,53,.06)}
.why-card img{width:56px;height:56px}
.why-card h3{margin:14px 0 8px;font-size:20px}
.why-card p{margin:0;color:var(--muted);font-size:14px}

.pay-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.pay-chip{
  min-width:120px;padding:14px 18px;border-radius:14px;text-align:center;
  background:#fff;border:1px solid var(--line);font-weight:700;color:var(--muted);
}

.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}
.review{
  padding:24px;border-radius:22px;background:#fff;border:1px solid var(--line);
}
.review p{margin:0;color:var(--muted);min-height:110px}
.review-user{display:flex;align-items:center;gap:12px;margin-top:18px}
.avatar{
  width:42px;height:42px;border-radius:50%;display:grid;place-items:center;
  color:#fff;font-weight:800;background:linear-gradient(135deg,var(--a),var(--b));
}
.review-user strong{display:block;font-size:15px}
.review-user span{color:var(--muted);font-size:12px}

.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}
.news-card{
  display:block;padding:24px;border-radius:22px;background:#fff;border:1px solid var(--line);
  transition:transform .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-3px);border-color:rgba(50,117,246,.35)}
.news-card time{color:var(--a);font-size:13px;font-weight:700}
.news-card h3{margin:10px 0;font-size:20px;line-height:1.35}
.news-card p{margin:0;color:var(--muted);font-size:14px}

.enterprise{
  display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center;
  padding:36px;border-radius:28px;background:#08152C;color:#fff;
}
.enterprise h2{margin:0;font-size:34px;color:#fff}
.enterprise p{color:#9DABC1}
.enterprise ul{margin:18px 0 0;padding:0;list-style:none;display:grid;gap:10px}
.enterprise li{padding-left:24px;position:relative;color:#D7E0EF}
.enterprise li:before{content:"✓";position:absolute;left:0;color:#7EB0FF}
.enterprise-panel{
  min-height:220px;border-radius:22px;overflow:hidden;padding:0;
  background:linear-gradient(160deg,rgba(50,117,246,.35),rgba(140,90,244,.4));
  border:1px solid rgba(255,255,255,.12);
}
.enterprise-panel img{width:100%;height:100%;min-height:240px;object-fit:cover;display:block}

.faq-list{display:grid;gap:12px;margin-top:28px}
.faq{
  border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden;
}
.faq button{
  width:100%;text-align:left;padding:18px 22px;font-weight:800;color:var(--ink);
  display:flex;justify-content:space-between;gap:16px;align-items:center;
}
.faq button span{color:var(--a);font-size:22px;line-height:1}
.faq .faq-body{display:none;padding:0 22px 18px;color:var(--muted)}
.faq.open .faq-body{display:block}
.faq.open button span{transform:rotate(45deg)}

.cta-band{
  padding:70px 0;text-align:center;color:#fff;
  background:
    radial-gradient(circle at 20% 30%,rgba(255,255,255,.12),transparent 28%),
    linear-gradient(135deg,var(--a),var(--b));
}
.cta-band h2{margin:0;font-size:clamp(30px,4vw,44px);color:#fff}
.cta-band p{margin:14px auto 0;max-width:640px;color:rgba(255,255,255,.9)}
.cta-band .hero-actions{justify-content:center}

.inner-hero{
  padding:64px 0 36px;
  background:linear-gradient(180deg,#F5F8FF,#fff);
}
.inner-hero h1{margin:14px 0 0;font-size:clamp(34px,4.4vw,54px);line-height:1.12}
.inner-hero .lead{margin:14px 0 0;color:var(--muted);max-width:720px}

.download-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:28px}
.download-card{
  padding:28px;border-radius:22px;background:#fff;border:1px solid var(--line);
  display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center;
}
.download-card img{width:56px;height:56px}
.download-card h3{margin:0 0 6px;font-size:22px}
.download-card p{margin:0;color:var(--muted);font-size:14px}

.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:36px;align-items:start}
.article{padding:28px;border-radius:22px;background:#fff;border:1px solid var(--line)}
.article .meta{color:var(--muted);font-size:14px;margin-bottom:18px}
.article h2{margin:28px 0 10px;font-size:26px}
.article p,.article li{color:var(--muted);font-size:16px;line-height:1.95}
.article ol,.article ul{padding-left:22px}
.side{position:sticky;top:96px;padding:22px;border-radius:22px;background:#fff;border:1px solid var(--line)}
.side h3{margin:0 0 12px;font-size:18px}
.side a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
.side a:hover{color:var(--a)}

.daily-box{
  margin-top:28px;padding:24px;border-radius:22px;
  background:linear-gradient(135deg,#F5F8FF,#F8F1FF);border:1px solid var(--line);
}
.daily-box .tag{color:var(--a);font-size:13px;font-weight:800}
.daily-box h3{margin:8px 0;font-size:24px}
.daily-box p{margin:0;color:var(--muted)}

.sitemap-list{display:grid;gap:10px;margin-top:20px}
.sitemap-list a{
  display:flex;justify-content:space-between;gap:16px;padding:16px 18px;
  border-radius:14px;background:#fff;border:1px solid var(--line);color:var(--muted);
}
.sitemap-list a:hover{border-color:rgba(50,117,246,.35);color:var(--a)}

footer{padding-top:54px;background:#08152C;color:#D7E0EF;margin-top:40px}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px;padding-bottom:34px}
.foot .brand span{color:#fff}
.foot p,.foot a{color:#9DABC1;font-size:13px}
.foot a{display:block;padding:5px 0}
.foot h4{margin:0 0 12px;color:#fff;font-size:15px}
.copyright{text-align:center;padding:18px;color:#7F8DA4;border-top:1px solid rgba(255,255,255,.06)}

@media (max-width:980px){
  .menu-toggle{display:grid;place-content:center}
  nav{
    display:none;position:absolute;left:20px;right:20px;top:74px;
    background:#fff;border:1px solid var(--line);border-radius:18px;
    padding:14px;flex-direction:column;gap:12px;box-shadow:0 18px 40px rgba(17,29,53,.08);
  }
  nav.open{display:flex}
  .head{grid-template-columns:auto auto;justify-content:space-between}
  .head .btn{display:none}
  .hero-grid,.feature-row,.feature-row.reverse,.promo,.enterprise,.article-layout,.download-grid,.inner-hero-grid{grid-template-columns:1fr}
  .hero-visual img,.inner-hero-media img{min-height:280px}
  .feature-row.reverse .feature-copy,.feature-row.reverse .feature-media{order:initial}
  .stats-grid,.why-grid,.reviews,.news-grid,.hero-panel,.foot{grid-template-columns:1fr}
  .hero-visual{min-height:340px}
  .download-card{grid-template-columns:auto 1fr}
  .download-card .btn{grid-column:1/-1}
}