:root{
  --bg:#f3f6f5;
  --ink:#14201c;
  --muted:#5b6b66;
  --line:#d7e3de;
  --teal:#00897b;
  --teal-dark:#00695c;
  --teal-soft:#e0f2f1;
  --accent:#ff7043;
  --card:#fff;
  --shadow:0 18px 40px rgba(20,38,31,.08);
  --font:"Manrope","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --display:"Sora","Manrope","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:
  radial-gradient(900px 420px at 12% -10%,rgba(0,137,123,.16),transparent 60%),
  radial-gradient(700px 360px at 100% 0%,rgba(255,112,67,.10),transparent 55%),
  linear-gradient(180deg,#eef6f4 0%,var(--bg) 42%,#eef2f1 100%);
  color:var(--ink);line-height:1.65;font-size:16px;min-height:100vh}
a{color:var(--teal-dark);text-decoration:none}
a:hover{text-decoration:underline}
.shell{width:min(100% - 32px,1080px);margin:0 auto}
.nav-wrap{position:sticky;top:0;z-index:40;backdrop-filter:blur(14px);background:rgba(238,246,244,.86);border-bottom:1px solid rgba(215,227,222,.9)}
.nav{position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.brand-logo{width:36px;height:36px;border-radius:10px;display:block;background:#fff;object-fit:cover;box-shadow:0 0 0 1px rgba(0,0,0,.06)}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:800;font-size:1.15rem;color:var(--ink);text-decoration:none}

.nav-links{display:flex;gap:18px;align-items:center}
.nav-links a{color:var(--muted);font-weight:650;font-size:14px;text-decoration:none}
.nav-links a:hover,.nav-links a.on{color:var(--teal-dark)}
.nav-cta{display:inline-flex;align-items:center;gap:8px;background:var(--teal);color:#fff!important;padding:10px 16px;border-radius:999px;font-weight:750;text-decoration:none!important;box-shadow:0 10px 24px rgba(0,137,123,.28)}
.menu{display:none;border:0;background:transparent;font-size:22px;color:var(--ink)}
.hero{padding:54px 0 28px;display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
.hero-logo{width:72px;height:72px;border-radius:18px;background:#fff;box-shadow:var(--shadow)}
.hero-brand{display:flex;align-items:center;gap:14px;font-family:var(--display);font-size:clamp(2.6rem,6vw,4.4rem);line-height:1;letter-spacing:-.04em;font-weight:800;color:var(--teal-dark);margin-bottom:14px;animation:rise .7s ease both}
.hero h1{font-family:var(--display);font-size:clamp(1.35rem,2.4vw,1.85rem);line-height:1.25;font-weight:700;margin-bottom:12px;animation:rise .7s .08s ease both}
.hero-lead{color:var(--muted);max-width:34rem;margin-bottom:22px;animation:rise .7s .14s ease both}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;animation:rise .7s .2s ease both}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 20px;border-radius:999px;font-weight:750;text-decoration:none!important;border:1px solid transparent}
.btn-primary{background:var(--teal);color:#fff;box-shadow:0 12px 28px rgba(0,137,123,.28)}
.btn-primary:hover{background:var(--teal-dark)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.hero-visual{position:relative;min-height:360px;animation:floatIn .9s .1s ease both}
.phone{width:220px;height:440px;margin:0 auto;border-radius:36px;background:linear-gradient(160deg,#1d2a27,#0f1715);padding:12px;box-shadow:var(--shadow),0 0 0 1px rgba(255,255,255,.08);position:relative}
.phone-screen{height:100%;border-radius:28px;background:linear-gradient(180deg,#0f3d38,#12332f 40%,#0b1c19);padding:18px 14px;color:#e8fffa;display:flex;flex-direction:column;gap:12px}
.phone-bar{height:10px;width:42%;margin:4px auto 8px;border-radius:99px;background:rgba(255,255,255,.18)}
.phone-row{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:12px;display:flex;justify-content:space-between;align-items:center;font-size:13px}
.phone-row.active{background:rgba(0,137,123,.35);border-color:rgba(0,196,170,.45)}
.dot{width:10px;height:10px;border-radius:50%;background:#4ade80;box-shadow:0 0 12px #4ade80}
.phone-fab{margin-top:auto;align-self:center;width:64px;height:64px;border-radius:50%;background:var(--accent);display:grid;place-items:center;font-weight:800;box-shadow:0 12px 30px rgba(255,112,67,.35)}
.glow{position:absolute;inset:18% 8% auto;height:48%;background:radial-gradient(circle,rgba(0,137,123,.28),transparent 70%);filter:blur(8px);z-index:-1}
.section{padding:48px 0}
.section h2{font-family:var(--display);font-size:clamp(1.5rem,3vw,2rem);margin-bottom:10px}
.section .lead{color:var(--muted);margin-bottom:22px;max-width:40rem}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.feature{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:0 8px 24px rgba(20,38,31,.04)}
.feature h3{font-size:1.05rem;margin-bottom:8px}
.feature p{color:var(--muted);font-size:14px}
.strip{background:var(--teal-soft);border:1px solid #c8e6e2;border-radius:18px;padding:18px 20px;display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center}
.strip b{color:var(--teal-dark)}
.page{padding:88px 0 64px}
.page h1{font-family:var(--display);font-size:clamp(1.8rem,4vw,2.6rem);line-height:1.15;margin-bottom:12px}
.crumbs{color:var(--muted);font-size:13px;margin-bottom:18px}
.article{max-width:760px}
.article h2{margin:28px 0 10px;font-size:1.25rem}
.article p,.article li{color:var(--muted);margin:10px 0}
.article ol,.article ul{padding-left:1.2rem}
.article img{max-width:100%;border-radius:14px;margin:12px 0;border:1px solid var(--line)}
.dl-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:var(--shadow);max-width:520px}
.dl-card .meta{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 18px}
.dl-card .meta span{font-size:12px;font-weight:700;color:var(--muted);background:#f3f7f5;border:1px solid var(--line);padding:7px 12px;border-radius:999px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:700}
.faq details p{color:var(--muted);margin-top:8px}
.blog-list{display:grid;gap:12px}
.blog-card{display:block;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 18px;text-decoration:none;color:inherit;transition:.2s ease}
.blog-card:hover{transform:translateY(-2px);border-color:#9fd0c8;text-decoration:none}
.blog-card strong{display:block;margin-bottom:6px}
.blog-card span{color:var(--muted);font-size:14px}
.footer{margin-top:40px;border-top:1px solid var(--line);padding:28px 0 40px;color:var(--muted);font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:20px}
.footer a{color:var(--muted)}
.footer strong{color:var(--ink);display:block;margin-bottom:8px}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@keyframes floatIn{from{opacity:0;transform:translateY(18px) scale(.98)}to{opacity:1;transform:none}}
@media(max-width:900px){
  .hero{grid-template-columns:1fr;padding-top:28px}
  .hero-visual{min-height:280px}
  .phone{width:190px;height:380px}
  .hero-brand{font-size:clamp(2rem,10vw,2.8rem)}
  .hero-actions .btn{width:100%;justify-content:center}
  .features{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .nav-links{display:none;position:absolute;left:0;right:0;top:64px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px;flex-direction:column;align-items:stretch;z-index:50}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 10px}
  .menu{display:block;padding:8px}
  .page{padding:72px 0 48px}
}