:root{
  --blue:#2563EB;--blue-2:#1D4ED8;--blue-soft:#EFF6FF;--navy:#0F172A;
  --slate:#475569;--muted:#64748B;--bg:#F8FAFC;--surface:#FFFFFF;
  --line:#E5E7EB;--green:#10B981;--orange:#F59E0B;--purple:#7C3AED;
  --shadow:0 18px 50px rgba(15,23,42,.08);--radius:24px;
  color-scheme:light dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--navy);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:none}
.container{width:min(1180px,calc(100% - 36px));margin-inline:auto}

/* Header */
.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.88);backdrop-filter:blur(18px);border-bottom:1px solid rgba(229,231,235,.92)}
.nav{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--navy);font-size:1.28rem;font-weight:800;letter-spacing:-.02em}
.brand-grid{display:grid;grid-template-columns:repeat(2,18px);grid-template-rows:repeat(2,18px);gap:4px}
.brand-grid i{display:block;border-radius:6px}
.brand-grid i:nth-child(1){background:linear-gradient(145deg,#2563EB,#1D4ED8)}
.brand-grid i:nth-child(2){background:linear-gradient(145deg,#2563EB,#60A5FA)}
.brand-grid i:nth-child(3){background:linear-gradient(145deg,#1D4ED8,#2563EB)}
.brand-grid i:nth-child(4){background:linear-gradient(145deg,#2563EB,#10B981)}
.nav-links{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav-links a{padding:10px 13px;border-radius:12px;color:var(--navy);font-weight:650;font-size:.95rem}
.nav-links a:hover,.nav-links a[aria-current="page"]{background:var(--blue-soft);color:var(--blue)}
.support-btn{background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff!important;padding-inline:18px!important;box-shadow:0 10px 26px rgba(37,99,235,.22)}

/* Hero */
.hero{position:relative;overflow:hidden;padding:78px 0 66px;background:linear-gradient(180deg,#fff 0%,#F8FAFC 100%);border-bottom:1px solid var(--line)}
.hero::before{content:"";position:absolute;right:-10%;top:-20%;width:720px;height:720px;border-radius:50%;background:radial-gradient(circle,rgba(96,165,250,.22) 0%,rgba(96,165,250,.07) 38%,transparent 70%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:64px;align-items:center}
.badge{display:inline-flex;align-items:center;gap:8px;padding:8px 13px;border-radius:999px;background:var(--blue-soft);color:var(--blue);font-size:.85rem;font-weight:750}
.dot{width:7px;height:7px;border-radius:50%;background:var(--blue)}
.hero h1{font-size:clamp(3rem,5.35vw,5.3rem);line-height:1.04;letter-spacing:-.052em;margin:18px 0 20px;max-width:720px}
.hero p{max-width:690px;margin:0;color:var(--slate);font-size:clamp(1.04rem,1.5vw,1.18rem)}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:0 20px;border-radius:13px;font-weight:760;border:1px solid var(--line);transition:transform .18s ease,box-shadow .18s ease,background .18s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--blue-2));color:#fff;border-color:transparent;box-shadow:0 12px 28px rgba(37,99,235,.22)}
.btn-secondary{background:#fff;color:var(--navy)}
.platforms{display:flex;gap:22px;flex-wrap:wrap;margin-top:40px;color:var(--slate);font-size:.94rem;font-weight:650}
.platform{display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.platform svg{width:20px;height:20px;display:block;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.platform.apple svg{fill:currentColor;stroke:none;width:19px;height:19px}

.hero-visual{display:flex;align-items:center;justify-content:center;min-height:430px}
.visual-stage{position:relative;width:min(100%,470px);aspect-ratio:1/1;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle,rgba(219,234,254,.92) 0%,rgba(219,234,254,.28) 50%,transparent 72%)}
.visual-stage::before,.visual-stage::after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(37,99,235,.11)}
.visual-stage::before{inset:7%}.visual-stage::after{inset:16%}
.visual-dots{position:absolute;inset:17%;opacity:.7;background-image:radial-gradient(rgba(37,99,235,.34) 1.35px,transparent 1.35px);background-size:16px 16px;border-radius:50%}
.tile-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(2,132px);gap:20px}
.app-tile{width:132px;height:132px;border-radius:30px;display:grid;place-items:center;box-shadow:0 24px 50px rgba(15,23,42,.14);transition:transform .22s ease,box-shadow .22s ease}
.app-tile:hover{transform:translateY(-4px);box-shadow:0 30px 62px rgba(15,23,42,.18)}
.app-tile svg{width:72px;height:72px}
.app-tile.blue{background:linear-gradient(145deg,#3980FF,#1555E8)}
.app-tile.green{background:linear-gradient(145deg,#51DCA5,#10B981)}
.app-tile.purple{background:linear-gradient(145deg,#8B5CF6,#6D28D9)}
.app-tile.orange{background:linear-gradient(145deg,#FFB020,#F59E0B)}

/* Content */
section.content-section{padding:74px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:30px}
.section-head h2{font-size:clamp(2rem,4vw,3.15rem);letter-spacing:-.04em;margin:0}
.section-head p{max-width:650px;color:var(--slate);margin:0}
.app-showcase{display:grid;grid-template-columns:.95fr 1.05fr;gap:24px;align-items:stretch}
.app-card{background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:30px;box-shadow:var(--shadow)}
.app-card-top{display:flex;align-items:center;gap:18px;margin-bottom:18px}
.copy-icon{width:82px;height:82px;border-radius:24px;background:linear-gradient(145deg,#3980FF,#1555E8);display:grid;place-items:center;box-shadow:0 14px 30px rgba(37,99,235,.24);flex:0 0 auto}
.copy-icon svg{width:50px;height:50px}
.app-card h2{margin:0 0 4px;font-size:1.65rem}
.app-card p{margin:0;color:var(--slate)}
.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:22px}
.feature{padding:18px;border-radius:16px;background:#F8FAFC;border:1px solid var(--line)}
.feature b{display:block;margin-bottom:4px}.feature span{color:var(--slate);font-size:.94rem}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.card h3{margin:12px 0 8px;font-size:1.12rem}.card p{margin:0;color:var(--slate)}
.icon{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue)}
.icon svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* Inner pages */
.page-hero{padding:58px 0 38px;background:linear-gradient(180deg,#fff,#F8FAFC);border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(2.4rem,5vw,4.3rem);letter-spacing:-.045em;margin:0 0 8px}.page-hero p{color:var(--slate);margin:0}
main{padding:56px 0 76px}
.prose{background:var(--surface);border:1px solid var(--line);border-radius:26px;padding:clamp(24px,5vw,54px);box-shadow:var(--shadow)}
.prose h2{font-size:1.35rem;margin-top:2.1em}.prose h2:first-child{margin-top:0}.prose p,.prose li{color:var(--slate)}.prose code{background:#F1F5F9;padding:2px 6px;border-radius:6px}.meta{color:var(--slate);font-size:.95rem;margin-bottom:26px}.support-box{padding:24px;border-radius:18px;background:var(--blue-soft);border:1px solid #BFDBFE}

/* Footer */
.site-footer{padding:32px 0 42px;border-top:1px solid var(--line);background:var(--surface)}
.footer-row{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:12px;color:var(--navy);font-weight:750}.footer-brand .brand-grid{transform:scale(.72);transform-origin:left center}.footer-note{color:var(--slate);font-weight:500}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;color:var(--slate)}.footer-links a{color:var(--slate)}

@media(max-width:900px){
  .nav{align-items:flex-start;flex-direction:column;padding:14px 0}.hero-grid,.app-showcase{grid-template-columns:1fr}.hero{padding-top:62px}.hero-visual{min-height:390px}.grid{grid-template-columns:1fr 1fr}.section-head{align-items:flex-start;flex-direction:column}
}
@media(max-width:580px){
  .container{width:min(100% - 24px,1180px)}.nav-links{gap:2px}.nav-links a{padding:8px 9px;font-size:.9rem}.support-btn{display:none}.hero h1{font-size:clamp(2.65rem,14vw,4rem)}.tile-grid{grid-template-columns:repeat(2,102px);gap:14px}.app-tile{width:102px;height:102px;border-radius:24px}.app-tile svg{width:56px;height:56px}.hero-visual{min-height:330px}.grid,.feature-list{grid-template-columns:1fr}.platforms{gap:16px}.footer-row{align-items:flex-start;flex-direction:column}
}

@media(prefers-color-scheme:dark){
  :root{--navy:#F8FAFC;--slate:#CBD5E1;--muted:#94A3B8;--bg:#071321;--surface:#0F1B2D;--line:#233247;--blue-soft:#132A4A;--shadow:0 18px 50px rgba(0,0,0,.25)}
  body{background:var(--bg)}
  .site-header{background:rgba(7,19,33,.9);border-color:#203047}
  .nav-links a:hover,.nav-links a[aria-current="page"]{background:#EAF2FF;color:var(--blue)}
  .hero{background:linear-gradient(135deg,#071321 0%,#0B1830 52%,#102544 100%);border-color:#203047}
  .hero::before{right:-6%;top:-12%;width:640px;height:640px;background:radial-gradient(circle,rgba(96,165,250,.22) 0%,rgba(37,99,235,.08) 45%,transparent 72%)}
  .badge{background:#F8FAFC;color:var(--blue)}
  .btn-secondary{background:transparent;color:#F8FAFC;border-color:#334155}
  .visual-stage{background:radial-gradient(circle,rgba(148,163,184,.25) 0%,rgba(59,130,246,.11) 48%,transparent 72%)}
  .visual-stage::before,.visual-stage::after{border-color:rgba(147,197,253,.13)}
  .visual-dots{background-image:radial-gradient(rgba(147,197,253,.25) 1.25px,transparent 1.25px)}
  .app-card,.card,.prose,.site-footer{background:var(--surface)}
  .feature{background:#111F33}.page-hero{background:linear-gradient(180deg,#0F1B2D,#071321);border-color:#203047}
  .prose code{background:#16243A}.support-box{background:#112B4B;border-color:#244C78}
}