*{box-sizing:border-box}
html{scroll-behavior:smooth}
:root{
  --bg:#0a0d12;
  --bg-soft:#11151b;
  --panel:#121821;
  --panel-2:#151d27;
  --border:rgba(255,255,255,.08);
  --border-2:rgba(255,255,255,.13);
  --text:#edf1f7;
  --muted:#97a3b5;
  --line:#dfe6ef;
  --white:#ffffff;
  --dark:#0f141b;
  --soft:#f5f7fa;
  --soft-2:#eef2f7;
  --soft-line:#dde4ed;
  --accent:#d8e3f0;
  --shadow:0 24px 60px rgba(0,0,0,.20);
  --dark-shadow:0 28px 70px rgba(0,0,0,.38);
  --radius:28px;
  --radius-md:22px;
  --radius-sm:18px;
  --container:1240px;
}
body{
  margin:0;
  font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at 18% 0%, rgba(255,255,255,.08), transparent 22%),
    linear-gradient(180deg,#090c11 0%, #0b1016 100%);
  line-height:1.72;
}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%;height:auto}
button{font:inherit}
.container{width:min(var(--container), calc(100% - 32px));margin:0 auto}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(10,13,18,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  padding:16px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:max-content;
}
.brand-logo{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:15px;
  background:#fff;color:#0b1016;
  font-size:20px;font-weight:900;
}
.brand-copy{display:flex;flex-direction:column;gap:4px}
.brand-copy strong{font-size:18px;line-height:1;color:var(--white)}
.brand-copy em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.08em}
.main-nav{
  display:flex;align-items:center;gap:18px;
  margin-left:auto;
}
.main-nav a{
  font-size:14px;font-weight:700;color:var(--muted);
  transition:color .2s ease;
}
.main-nav a:hover{color:var(--white)}
.header-actions{display:flex;gap:10px}
.nav-toggle{
  display:none;margin-left:auto;
  background:transparent;border:0;padding:0
}
.nav-toggle span{
  display:block;width:24px;height:2px;background:#fff;margin:5px 0
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 18px;border-radius:999px;font-weight:800;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-dark{background:#fff;color:#0b1016}
.btn-solid{background:rgba(255,255,255,.10);border-color:var(--border-2);color:#fff}
.btn-line{background:transparent;border-color:var(--border-2);color:#fff}

.hero{
  position:relative;
  padding:48px 0 34px;
}
.sub-hero{padding-top:42px}
.hero-grid{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:30px;
  align-items:center;
}
.eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:900;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:#d8e3f0;
}
.eyebrow.dark{color:#657487}
.hero-copy h1,
.text-side h2,
.section-head h2,
.entry-detail-card h2{
  margin:16px 0 16px;
  font-size:clamp(38px,5vw,72px);
  line-height:.96;
  letter-spacing:-.05em;
}
.hero-text,
.section-head p,
.text-side p,
.product-info p,
.step-card p,
.insight-card p,
.entry-card p,
.entry-detail-card p,
.faq-list p{
  margin:0;color:var(--muted)
}
.hero-actions-row{
  display:flex;gap:12px;flex-wrap:wrap;
  margin:28px 0 26px;
}
.hero-data{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px
}
.data-card{
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  border-radius:20px;
  padding:18px;
  box-shadow:var(--dark-shadow);
}
.data-card strong{
  display:block;font-size:28px;color:#fff
}
.data-card span{
  display:block;font-size:13px;color:var(--muted)
}
.hero-visual{position:relative}
.hero-image-card{
  overflow:hidden;
  border-radius:34px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.04);
  box-shadow:var(--dark-shadow);
}
.hero-image-card img{
  width:100%;
  min-height:560px;
  object-fit:cover;
}
.floating-card{
  position:absolute;
  padding:14px 16px;
  border-radius:18px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(12px);
  box-shadow:0 16px 38px rgba(0,0,0,.28);
}
.floating-card span{display:block;font-size:12px;color:var(--muted)}
.floating-card strong{display:block;margin-top:4px;font-size:18px;color:#fff}
.left-card{left:22px;bottom:22px}
.right-card{right:22px;top:22px}

.entry-strip,.content-block{padding:28px 0}
.content-block.light{
  background:var(--soft);
  color:var(--dark);
}
.content-block.light .section-head h2,
.content-block.light .text-side h2,
.content-block.light .entry-detail-card h2{
  color:var(--dark)
}
.content-block.light .section-head p,
.content-block.light .text-side p,
.content-block.light .product-info p,
.content-block.light .step-card p,
.content-block.light .insight-card p,
.content-block.light .faq-list p,
.content-block.light .entry-detail-card p{
  color:#5f6d7f
}
.center{text-align:center;margin-inline:auto}
.section-head{
  margin-bottom:22px;
  max-width:860px;
}
.entry-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px
}
.entry-card,.panel,.product-card,.compare-table,.step-card,.insight-card,.entry-detail-card{
  border-radius:var(--radius);
  border:1px solid var(--border);
  background:rgba(255,255,255,.04);
  box-shadow:var(--dark-shadow);
}
.content-block.light .panel,
.content-block.light .product-card,
.content-block.light .compare-table,
.content-block.light .step-card,
.content-block.light .insight-card,
.content-block.light .entry-detail-card,
.content-block.light .entry-card{
  border:1px solid var(--soft-line);
  background:#fff;
  box-shadow:var(--shadow);
}
.entry-card{
  padding:24px;
  text-align:left;
  cursor:pointer;
}
.accent-card{
  background:linear-gradient(180deg, rgba(255,255,255,.09), rgba(255,255,255,.04));
}
.card-no{
  width:42px;height:42px;border-radius:14px;
  display:grid;place-items:center;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.12);
  color:#fff;font-weight:900;
  margin-bottom:16px;
}
.content-block.light .card-no{
  background:#10161e;color:#fff;border-color:#10161e
}
.entry-card h3,.product-info h3,.step-card h3,.insight-card h3{
  margin:0 0 10px;font-size:28px;line-height:1.08;letter-spacing:-.04em
}
.entry-card strong,.entry-detail-card strong{word-break:break-all}

.two-col{
  display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center
}
.two-col.reverse .media-side{order:1}
.two-col.reverse .text-side{order:2}
.panel{overflow:hidden}
.panel img{width:100%;height:100%;object-fit:cover}
.light-panel{background:#fff}
.text-side .btn{margin-top:24px}
.feature-list{
  display:grid;grid-template-columns:repeat(2,1fr);gap:14px;
  margin-top:22px;
}
.feature-list.compact{grid-template-columns:1fr}
.feature-list div{
  border-radius:18px;
  padding:15px 16px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border)
}
.content-block.light .feature-list div{
  background:#f7f9fc;border:1px solid var(--soft-line)
}
.feature-list strong{display:block;font-size:15px}
.feature-list span{display:block;font-size:14px;color:var(--muted)}
.content-block.light .feature-list span{color:#667586}

.product-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:18px
}
.product-card{
  display:grid;grid-template-columns:240px 1fr;gap:18px;padding:20px
}
.product-image{
  border-radius:22px;overflow:hidden;
  background:rgba(255,255,255,.03);
  border:1px solid var(--border);
  padding:18px;
}
.content-block.light .product-image{
  background:#f8fafc;border:1px solid var(--soft-line)
}
.product-image img{width:100%;aspect-ratio:1/1;object-fit:contain}
.product-code{
  display:block;font-size:12px;font-weight:900;letter-spacing:.16em;color:#cfd9e6
}
.content-block.light .product-code{color:#667586}
.tags{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:16px
}
.tags span{
  display:inline-flex;align-items:center;justify-content:center;
  padding:8px 12px;border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--border);font-size:13px;color:#fff
}
.content-block.light .tags span{
  background:#f3f6fa;border:1px solid var(--soft-line);color:#1a2430
}

.compare-table{overflow:hidden}
.compare-row{
  display:grid;
  grid-template-columns:1fr 1.45fr 1.2fr 1fr 1.45fr .62fr;
  gap:14px;align-items:center;
  padding:16px 20px;
  border-bottom:1px solid var(--border)
}
.content-block.light .compare-row{border-color:var(--soft-line)}
.compare-row:last-child{border-bottom:0}
.compare-head{
  font-weight:900;color:#fff;background:rgba(255,255,255,.03)
}
.content-block.light .compare-head{color:#11161d;background:#f7f9fc}
.table-btn{
  padding:10px 12px;border-radius:999px;
  border:1px solid var(--border-2);
  background:transparent;color:#fff;cursor:pointer
}
.content-block.light .table-btn{
  border:1px solid #d7e0ea;color:#10161e
}

.steps-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px
}
.step-card,.insight-card,.entry-detail-card{padding:24px}
.step-card b{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:#fff;color:#0b1016;font-weight:900;margin-bottom:16px
}
.content-block.light .step-card b{background:#10161e;color:#fff}

.security-items{
  display:grid;gap:14px;margin-top:22px
}
.security-item{
  padding:18px;border-radius:20px;
  background:rgba(255,255,255,.04);border:1px solid var(--border)
}
.security-item strong{display:block;margin-bottom:6px;font-size:16px}
.security-item p{margin:0;color:var(--muted)}
.content-block.light .security-item{
  background:#fff;border-color:var(--soft-line)
}

.insight-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px
}

.support-actions{
  display:flex;gap:12px;flex-wrap:wrap;margin-top:20px
}
.faq-wrap{max-width:980px}
.faq-list{display:grid;gap:14px}
.faq-list details{
  border-radius:22px;padding:18px 20px;
  background:#fff;border:1px solid var(--soft-line);box-shadow:var(--shadow)
}
.faq-list summary{font-weight:900;cursor:pointer;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list p{margin-top:12px}

.entry-detail-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px
}

.site-footer{
  border-top:1px solid var(--border);
  background:#0a0d12;
}
.footer-inner{
  display:flex;justify-content:space-between;align-items:flex-start;
  gap:24px;padding:26px 0 34px
}
.footer-brand strong{font-size:22px}
.footer-brand p{margin:8px 0 0;max-width:620px;color:var(--muted)}
.footer-links{
  display:flex;flex-direction:column;align-items:flex-end;gap:8px
}
.footer-contact{
  padding:11px 16px;border-radius:999px;
  border:1px solid var(--border-2);background:transparent;color:#fff;cursor:pointer
}

.contact-modal{
  display:none;position:fixed;inset:0;z-index:100;
  align-items:center;justify-content:center
}
.contact-modal.open{display:flex}
.modal-mask{
  position:absolute;inset:0;background:rgba(0,0,0,.6);backdrop-filter:blur(10px)
}
.modal-panel{
  position:relative;z-index:2;
  width:min(440px, calc(100% - 28px));
  padding:28px;border-radius:28px;
  background:#fff;color:#11161d;box-shadow:0 40px 100px rgba(0,0,0,.45)
}
.modal-close{
  position:absolute;top:10px;right:14px;
  border:0;background:transparent;font-size:34px;cursor:pointer;color:#11161d
}
.modal-panel h2{margin:0 0 18px;font-size:32px}
.modal-image{
  overflow:hidden;border-radius:20px;border:1px solid #e0e6ee
}
.modal-image img{width:100%}
.modal-links{
  display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:16px
}
.modal-links a{
  padding:10px 14px;border-radius:999px;background:#f4f7fb;border:1px solid #d9e2ec
}
.floating-contact{
  position:fixed;right:18px;bottom:18px;z-index:70;
  padding:14px 18px;border-radius:999px;
  background:#fff;color:#0b1016;border:0;font-weight:900;
  box-shadow:0 18px 40px rgba(0,0,0,.25);cursor:pointer
}
body.lock{overflow:hidden}

@media (max-width:1180px){
  .main-nav,.header-actions{display:none}
  .nav-toggle{display:block}
  .header-inner.open .main-nav{
    display:flex;position:absolute;left:12px;right:12px;top:74px;
    flex-direction:column;gap:0;
    background:#0f141b;border:1px solid var(--border);border-radius:20px;
    padding:8px;box-shadow:var(--dark-shadow)
  }
  .header-inner.open .main-nav a{
    padding:12px 14px;border-radius:14px
  }
  .header-inner{position:relative}
  .header-inner.open .header-actions{
    display:flex;position:absolute;left:12px;right:12px;top:calc(74px + 7 * 49px + 8px);
    gap:8px;background:#0f141b;border:1px solid var(--border);border-radius:20px;padding:12px
  }
  .hero-grid,.two-col,.product-grid,.entry-grid,.insight-grid,.entry-detail-grid{
    grid-template-columns:1fr
  }
  .product-card{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .compare-head{display:none}
  .compare-row{grid-template-columns:1fr 1fr}
  .footer-inner{flex-direction:column}
  .footer-links{align-items:flex-start}
}
@media (max-width:760px){
  .container{width:min(var(--container), calc(100% - 24px))}
  .hero-copy h1,.text-side h2,.section-head h2,.entry-detail-card h2{font-size:40px}
  .hero-image-card img{min-height:auto}
  .hero-actions-row,.support-actions{flex-direction:column}
  .hero-data,.steps-grid,.feature-list,.compare-row{grid-template-columns:1fr}
  .btn{width:100%}
  .left-card,.right-card{position:static;margin-top:12px}
  .hero-visual{display:flex;flex-direction:column}
  .floating-contact{right:14px;bottom:14px}
}