*{box-sizing:border-box}
html{scroll-behavior:smooth}
:root{
  --bg:#f4f7fb;
  --surface:#ffffff;
  --surface-2:#f8fbff;
  --surface-3:#eef5ff;
  --ink:#10203a;
  --muted:#64748d;
  --muted-2:#8190a7;
  --line:#d9e5f2;
  --primary:#0a67f6;
  --primary-2:#5d99ff;
  --primary-soft:#edf4ff;
  --deep:#0d1830;
  --shadow:0 28px 60px rgba(18,40,77,.08);
  --radius:32px;
  --container:1280px;
}
html,body{margin:0;padding:0}
body{
  font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(circle at 0% 0%, rgba(10,103,246,.12), transparent 26%),
    radial-gradient(circle at 100% 0%, rgba(93,153,255,.10), transparent 22%),
    linear-gradient(180deg,#f8fbff 0%,#f4f7fb 38%,#eef3fa 100%);
  line-height:1.75;
}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%;height:auto}
button{font:inherit}
.container{width:min(var(--container),calc(100% - 34px));margin:0 auto}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  font-weight:900;
  letter-spacing:.15em;
  text-transform:uppercase;
  color:var(--primary);
}
.eyebrow::before{
  content:"";
  width:26px;height:2px;border-radius:999px;
  background:linear-gradient(90deg,var(--primary),transparent);
}
.lead,p{margin:0;color:var(--muted)}
h1,h2,h3{margin:0;color:var(--ink)}
.section-head{max-width:860px;margin:0 0 26px}
.section-head.center{text-align:center;margin-inline:auto}
.section-head h2,.story-aside h2,.hero-copy h1,.sub-hero-copy h1,.download-ribbon-shell h2{
  margin:14px 0 12px;
  font-size:clamp(40px,5.6vw,80px);
  line-height:.95;
  letter-spacing:-.05em;
}
.section-head p,.story-content p,.feature-copy p,.insight-card p,.note-card p,.portal-card p,.site-card p,.faq-item p,.model-body p,.decision-card p,.workflow-card p,.matrix-preview-copy p,.download-ribbon-shell p{
  color:var(--muted);
}

/* header */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(248,251,255,.88);
  backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(13,24,48,.06);
}
.nav-wrap{
  display:flex;align-items:center;gap:18px;
  min-height:82px;position:relative;
}
.brand{display:flex;align-items:center;gap:14px;min-width:max-content}
.brand-badge{
  width:48px;height:48px;border-radius:18px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),#88b5ff);
  color:#fff;font-size:24px;font-weight:900;
  box-shadow:0 18px 34px rgba(10,103,246,.18);
}
.brand-copy{display:flex;flex-direction:column;gap:1px}
.brand-copy strong{font-size:18px;line-height:1.1}
.brand-copy em{font-style:normal;font-size:12px;color:var(--muted-2);letter-spacing:.14em}
.main-nav{display:flex;align-items:center;gap:18px;margin-left:auto}
.main-nav a,.nav-link{
  border:0;background:transparent;padding:0;
  color:var(--ink);font-size:14px;font-weight:800;cursor:pointer;
}
.main-nav a:hover,.nav-link:hover{color:var(--primary)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;border:0;background:transparent;padding:0;margin-left:auto;cursor:pointer}
.nav-toggle span{display:block;width:25px;height:2px;background:var(--ink);margin:5px 0;border-radius:999px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:8px;padding:14px 20px;border-radius:999px;
  font-weight:900;border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease, box-shadow .22s ease, background .22s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#5d9aff);
  color:#fff;
  box-shadow:0 16px 36px rgba(10,103,246,.22);
}
.btn-light{
  background:#fff;
  border-color:var(--line);
  color:var(--ink);
  box-shadow:var(--shadow);
}
.btn-ghost{
  background:var(--primary-soft);
  border-color:rgba(10,103,246,.12);
  color:var(--primary);
}

/* hero */
.hero-atelier{padding:42px 0 26px}
.hero-atelier-grid{
  display:grid;
  grid-template-columns:.95fr 1.05fr;
  gap:22px;
  align-items:stretch;
}
.hero-copy,.sub-hero-copy{
  padding:42px 0;
}
.hero-copy h1,.sub-hero-copy h1{margin:18px 0 18px}
.hero-actions{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:28px;
}
.hero-stat-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;
  margin-top:32px;
}
.hero-stat-row article{
  padding:18px 18px 20px;
  border-radius:26px;
  background:rgba(255,255,255,.76);
  border:1px solid rgba(13,24,48,.06);
  box-shadow:var(--shadow);
}
.hero-stat-row strong{display:block;font-size:32px;line-height:1;letter-spacing:-.05em}
.hero-stat-row span{display:block;margin-top:8px;color:var(--muted)}
.hero-showcase{
  display:grid;
  grid-template-columns:1.05fr .8fr;
  gap:16px;
  align-items:stretch;
}
.hero-main-card{
  position:relative;
  overflow:hidden;
  border-radius:38px;
  background:
    linear-gradient(145deg,#0d1830 0%, #184eaa 55%, #eaf1ff 170%);
  padding:30px;
  min-height:520px;
  box-shadow:0 38px 80px rgba(20,44,86,.18);
  display:flex;
  flex-direction:column;
  justify-content:space-between;
}
.hero-main-card::after{
  content:"";
  position:absolute;right:-90px;top:-70px;
  width:280px;height:280px;border-radius:50%;
  background:rgba(255,255,255,.15);
  filter:blur(8px);
}
.hero-main-copy{position:relative;z-index:2;max-width:360px}
.hero-main-copy span{display:block;color:rgba(255,255,255,.70);font-weight:900;letter-spacing:.12em;text-transform:uppercase;font-size:12px}
.hero-main-copy h2{margin:12px 0 12px;font-size:44px;line-height:.95;letter-spacing:-.05em;color:#fff}
.hero-main-copy p{color:rgba(255,255,255,.84)}
.hero-main-image{
  position:relative;z-index:2;
  align-self:flex-end;
  width:min(400px,92%);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.12);
  border-radius:32px;
  padding:22px;
  backdrop-filter:blur(10px);
}
.hero-main-image img{max-height:320px;object-fit:contain;filter:drop-shadow(0 24px 30px rgba(0,0,0,.32))}
.hero-mini-stack{display:grid;gap:16px}
.hero-mini-stack article{
  border-radius:30px;background:#fff;padding:22px;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  display:flex;justify-content:space-between;align-items:center;gap:12px;
}
.hero-mini-stack small,.matrix-preview-panel small,.sub-hero-panels small,.hub-hero-art small,.portal-card span,.model-body span,.feature-kicker{
  display:block;
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  font-weight:900;
  color:var(--primary);
}
.hero-mini-stack strong{display:block;margin-top:6px;font-size:20px;line-height:1.1}
.hero-mini-stack a{
  min-width:max-content;
  padding:10px 14px;border-radius:999px;
  background:var(--primary-soft);
  color:var(--primary);font-weight:900;
}

/* shared sections */
.quick-nav-band,.story-block,.featured-products,.matrix-preview,.download-ribbon,.insight-columns,.faq-strip,.model-card-deck,.decision-lane,.compare-stage,.notes-stage,.portal-grid-stage,.official-pages-stage,.service-flow-stage{
  padding:30px 0;
}
.quick-nav-grid,.workflow-grid,.dual-feature-grid,.insight-grid,.deck-grid,.decision-grid,.portal-grid,.service-flow-grid{
  display:grid;gap:16px;
}
.quick-nav-grid{grid-template-columns:repeat(4,1fr)}
.quick-nav-card{
  text-align:left;border:0;cursor:pointer;
  padding:28px;border-radius:30px;background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.quick-nav-card span{
  display:inline-flex;width:44px;height:44px;border-radius:14px;
  align-items:center;justify-content:center;
  background:var(--primary-soft);color:var(--primary);font-weight:900;
}
.quick-nav-card h3{margin:18px 0 10px;font-size:28px;letter-spacing:-.04em;line-height:1.02}
.quick-nav-card p{color:var(--muted)}

.story-grid{
  display:grid;grid-template-columns:.75fr 1.25fr;gap:20px;align-items:start;
  margin-bottom:18px;
}
.story-aside,.story-content{
  padding:30px;border-radius:32px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
}
.workflow-grid{grid-template-columns:repeat(4,1fr)}
.workflow-card{
  padding:26px;border-radius:30px;background:var(--surface-2);
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.workflow-card b,.decision-card b,.flow-box b{
  display:block;
  font-size:44px;line-height:1;
  letter-spacing:-.06em;
  color:rgba(10,103,246,.32);
}
.workflow-card h3,.decision-card h3,.flow-box h3,.site-card h2,.insight-card h3,.note-card h3{margin:10px 0 10px;font-size:26px;letter-spacing:-.04em;line-height:1.06}

.light-panel{
  background:
    linear-gradient(180deg,#ffffff,#f4f8ff);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.feature-row{
  display:grid;grid-template-columns:1.02fr .98fr;gap:18px;align-items:center;
  margin-top:16px;
}
.feature-row.reverse{grid-template-columns:.98fr 1.02fr}
.feature-row.reverse .feature-image{order:2}
.feature-row.reverse .feature-copy{order:1}
.feature-image{
  padding:34px;border-radius:36px;display:flex;align-items:center;justify-content:center;
  min-height:380px;
}
.feature-image img{max-height:300px;object-fit:contain;filter:drop-shadow(0 24px 34px rgba(26,51,92,.18))}
.feature-copy{
  padding:24px 12px 24px 10px;
}
.feature-copy h3{margin:12px 0;font-size:52px;letter-spacing:-.05em;line-height:.95}
.pill-list{
  display:flex;flex-wrap:wrap;gap:10px;list-style:none;padding:0;margin:24px 0 0;
}
.pill-list li,.mini-pill,.support-chip{
  padding:9px 12px;border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  font-size:13px;
  font-weight:800;
}
.dual-feature-grid{grid-template-columns:repeat(2,1fr);margin-top:18px}
.dual-feature-card{
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
  border-radius:34px;overflow:hidden;
}
.feature-image.small{min-height:260px;border-radius:0;border-bottom:1px solid var(--line);box-shadow:none;background:linear-gradient(180deg,#fafcff,#edf4ff)}
.feature-copy.compact{padding:24px}
.feature-copy.compact h3{font-size:38px}

.matrix-preview-grid,.sub-hero-grid,.split-page-grid{
  display:grid;grid-template-columns:.95fr 1.05fr;gap:18px;align-items:stretch;
}
.matrix-preview-copy{
  padding:30px;border-radius:34px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
}
.matrix-preview-panel{
  display:grid;grid-template-columns:repeat(2,1fr);gap:14px;
}
.matrix-preview-panel article,.sub-hero-panels article,.hub-hero-art article{
  padding:22px;border-radius:28px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
}
.matrix-preview-panel strong,.sub-hero-panels strong,.hub-hero-art strong{display:block;margin:10px 0 8px;font-size:24px;line-height:1.02}
.matrix-preview-panel span,.sub-hero-panels span,.hub-hero-art span{color:var(--muted)}

.download-ribbon-shell{
  display:flex;justify-content:space-between;align-items:center;gap:24px;
  padding:34px;border-radius:36px;
  background:linear-gradient(135deg,#0c1a32 0%,#0d3d84 55%,#165fd3 100%);
  box-shadow:0 36px 90px rgba(15,60,130,.18);
}
.download-ribbon-shell h2{color:#fff;font-size:clamp(36px,4.5vw,66px)}
.download-ribbon-shell p{max-width:740px;color:rgba(255,255,255,.84)}
.download-ribbon-actions{display:flex;gap:12px;flex-wrap:wrap}
.download-ribbon-shell .btn-light{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.22);color:#fff;box-shadow:none}
.download-ribbon-shell .btn-primary{background:#fff;color:var(--primary);box-shadow:none}

.insight-grid{grid-template-columns:repeat(3,1fr)}
.insight-card,.note-card,.site-card,.portal-card{
  padding:28px;border-radius:32px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.faq-item{
  padding:22px 24px;border-radius:28px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
}
.faq-item summary{
  list-style:none;cursor:pointer;font-weight:900;
  font-size:18px;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item p{margin-top:10px}

.sub-hero{padding:34px 0 20px}
.breadcrumb{
  display:flex;align-items:center;gap:10px;
  margin-bottom:22px;
  color:var(--muted);
  font-size:14px;
}
.breadcrumb strong{color:var(--ink)}
.sub-hero-panels,.hub-hero-art{
  display:grid;grid-template-columns:repeat(2,1fr);gap:14px;
}
.hub-hero-art article:last-child{grid-column:span 2}

.deck-grid{grid-template-columns:repeat(2,1fr)}
.model-card{
  display:grid;grid-template-columns:.92fr 1.08fr;
  gap:0;overflow:hidden;border-radius:34px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
}
.model-image{
  min-height:280px;background:linear-gradient(180deg,#fbfdff,#eef4ff);
  display:flex;align-items:center;justify-content:center;padding:24px;border-right:1px solid var(--line);
}
.model-image img{max-height:220px;object-fit:contain;filter:drop-shadow(0 24px 32px rgba(26,51,92,.16))}
.model-body{padding:26px}
.model-body h2{margin:12px 0 12px;font-size:40px;letter-spacing:-.05em;line-height:.96}

.decision-grid{grid-template-columns:repeat(4,1fr)}
.decision-card,.flow-box{
  padding:26px;border-radius:30px;background:var(--surface-2);border:1px solid var(--line);box-shadow:var(--shadow);
}

.compare-stage-table{
  overflow:hidden;border-radius:30px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
}
.compare-head,.compare-line{
  display:grid;grid-template-columns:1.2fr 1fr 1.2fr 1fr 1.2fr .7fr;
  gap:14px;align-items:center;padding:18px 20px;
}
.compare-head{
  background:var(--primary-soft);font-weight:900;color:var(--ink);
}
.compare-line{border-top:1px solid var(--line)}
.compare-line strong{font-size:18px}
.mini-pill{
  border:0;cursor:pointer;background:var(--primary-soft);color:var(--primary);
}

.note-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}

.portal-grid{grid-template-columns:repeat(4,1fr)}
.portal-card{
  display:flex;flex-direction:column;justify-content:space-between;
  min-height:270px;
  text-align:left;border:0;cursor:pointer;
}
.portal-card h3{margin:16px 0 10px;font-size:34px;line-height:1.02;letter-spacing:-.04em}
.portal-card b{margin-top:18px;color:var(--ink);word-break:break-all}

.site-card.soft{background:linear-gradient(180deg,#ffffff,#f6faff)}
.site-card-actions,.download-ribbon-actions,.modal-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}

.service-flow-grid{grid-template-columns:repeat(4,1fr)}
.flow-box{background:#fff}

.site-footer{
  padding:12px 0 0;
}
.footer-shell{
  display:flex;justify-content:space-between;gap:28px;
  padding:34px 0 46px;border-top:1px solid rgba(13,24,48,.08);
}
.footer-brand strong{font-size:30px}
.footer-brand p{max-width:690px;margin-top:10px}
.footer-links{
  display:flex;flex-direction:column;gap:10px;align-items:flex-end;
}
.footer-links a{color:var(--ink)}
.footer-contact{
  padding:13px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;cursor:pointer;font-weight:900
}

/* modal */
.contact-modal{
  display:none;position:fixed;inset:0;z-index:140;align-items:center;justify-content:center;
}
.contact-modal.open{display:flex}
.modal-backdrop{
  position:absolute;inset:0;background:rgba(6,14,27,.62);backdrop-filter:blur(10px);
}
.modal-card{
  position:relative;z-index:2;width:min(440px,calc(100% - 24px));
  padding:28px;border-radius:34px;background:#fff;border:1px solid var(--line);
  box-shadow:0 40px 100px rgba(15,30,57,.18);text-align:center;
}
.modal-close{
  position:absolute;right:14px;top:10px;
  border:0;background:transparent;font-size:30px;cursor:pointer;color:var(--ink);
}
.modal-card h2{margin:12px 0 20px;font-size:44px;letter-spacing:-.05em;line-height:1}
.modal-image{
  width:min(300px,100%);margin:0 auto;padding:14px;
  border-radius:24px;background:var(--surface-2);border:1px solid var(--line);
}
.modal-actions a{
  padding:11px 14px;border-radius:999px;background:var(--primary-soft);font-weight:900;color:var(--primary);
}
.floating-service{
  position:fixed;right:18px;bottom:18px;z-index:100;
  padding:14px 18px;border-radius:999px;border:0;cursor:pointer;
  background:linear-gradient(135deg,var(--primary),#6fa6ff);color:#fff;font-weight:900;
  box-shadow:0 20px 44px rgba(10,103,246,.22);
}
body.lock{overflow:hidden}

/* animation */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease, transform .7s ease}
.reveal.visible{opacity:1;transform:none}

/* responsive */
@media (max-width:1180px){
  .main-nav,.nav-actions{display:none}
  .nav-toggle{display:block}
  .nav-wrap.open .main-nav{
    display:flex;position:absolute;left:0;right:0;top:76px;flex-direction:column;
    gap:0;padding:10px;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);
  }
  .nav-wrap.open .main-nav a,.nav-wrap.open .nav-link{padding:12px 14px;text-align:left}
  .nav-wrap.open .nav-actions{
    display:flex;position:absolute;left:0;right:0;top:330px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow)
  }

  .hero-atelier-grid,.story-grid,.feature-row,.matrix-preview-grid,.sub-hero-grid,.split-page-grid{grid-template-columns:1fr}
  .feature-row.reverse .feature-image,.feature-row.reverse .feature-copy{order:initial}
  .quick-nav-grid,.workflow-grid,.decision-grid,.portal-grid,.service-flow-grid{grid-template-columns:repeat(2,1fr)}
  .insight-grid,.faq-grid,.deck-grid,.note-grid{grid-template-columns:1fr 1fr}
  .hero-showcase{grid-template-columns:1fr}
  .hero-main-card{min-height:440px}
  .download-ribbon-shell,.footer-shell{flex-direction:column;align-items:flex-start}
  .footer-links{align-items:flex-start}
}
@media (max-width:760px){
  .container{width:min(var(--container),calc(100% - 24px))}
  .hero-copy,.sub-hero-copy{padding:20px 0}
  .hero-actions,.site-card-actions,.download-ribbon-actions,.modal-actions,.nav-wrap.open .nav-actions{flex-direction:column}
  .hero-stat-row,.quick-nav-grid,.workflow-grid,.dual-feature-grid,.matrix-preview-panel,.insight-grid,.faq-grid,.sub-hero-panels,.hub-hero-art,.deck-grid,.decision-grid,.note-grid,.portal-grid,.service-flow-grid,.compare-line{grid-template-columns:1fr}
  .hero-main-card{padding:24px;min-height:auto}
  .hero-main-copy h2{font-size:38px}
  .feature-image{min-height:300px;padding:24px}
  .feature-copy h3,.model-body h2,.portal-card h3{font-size:36px}
  .compare-head{display:none}
  .compare-stage-table{background:transparent;border:0;box-shadow:none}
  .compare-line{
    background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);
    padding:18px;margin-bottom:12px
  }
  .btn{width:100%}
  .footer-links{width:100%}
  .footer-links a,.footer-contact{width:100%;text-align:center}
}