/* ===== RESET & BASE ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --primary:#2DAAED;
  --primary-dark:#1A8FD0;
  --primary-light:#5CC4F7;
  --accent-orange:#F59E42;
  --accent-pink:#E84393;
  --accent-purple:#6C5CE7;
  --accent-green:#00B894;
  --bg:#050B18;
  --bg-card:rgba(255,255,255,.04);
  --bg-card-hover:rgba(255,255,255,.08);
  --text:#F0F4F8;
  --text-secondary:rgba(240,244,248,.6);
  --border:rgba(255,255,255,.08);
  --radius:16px;
  --radius-lg:24px;
  --radius-xl:32px;
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --transition:0.3s cubic-bezier(.4,0,.2,1);
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== HEADER ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:100;padding:16px 0;transition:background var(--transition),box-shadow var(--transition)}
.header.scrolled{background:rgba(5,11,24,.85);backdrop-filter:blur(20px) saturate(1.4);-webkit-backdrop-filter:blur(20px) saturate(1.4);box-shadow:0 1px 0 var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px}
.logo-icon{width:36px;height:36px;border-radius:8px}
.logo-text{font-weight:700;font-size:1.2rem;letter-spacing:-.02em}
.nav{display:flex;gap:32px}
.nav-link{font-size:.875rem;font-weight:500;color:var(--text-secondary);transition:color var(--transition);padding:8px 4px;min-height:44px;display:inline-flex;align-items:center}
.nav-link:hover{color:var(--text)}

/* ===== HERO ===== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:120px 0 80px;overflow:hidden}
.hero-bg-shapes{position:absolute;top:0;left:0;right:0;bottom:0;pointer-events:none}
.shape{position:absolute;border-radius:50%;filter:blur(100px);opacity:.25}
.shape-1{width:600px;height:600px;background:var(--primary);top:-200px;right:-100px}
.shape-2{width:400px;height:400px;background:var(--accent-purple);bottom:0;left:-100px}
.shape-3{width:300px;height:300px;background:var(--accent-pink);top:50%;left:50%;transform:translate(-50%,-50%)}
.hero-inner{display:flex;align-items:center;gap:80px;position:relative;z-index:1}
.hero-content{flex:1;min-width:0}
.hero-title{font-size:2.8rem;font-size:clamp(2.4rem,5vw,3.8rem);font-weight:800;line-height:1.1;letter-spacing:-.03em;margin-bottom:24px}
.gradient-text{background:linear-gradient(135deg,var(--primary-light),var(--accent-purple),var(--accent-pink));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{font-size:1.125rem;color:var(--text-secondary);max-width:500px;margin-bottom:36px;line-height:1.7}
.hero-actions{display:flex;gap:16px;margin-bottom:32px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 28px;border-radius:12px;font-size:.95rem;font-weight:600;transition:all var(--transition);cursor:pointer;border:none;font-family:var(--font)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 4px 24px rgba(45,170,237,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(45,170,237,.4)}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--border);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.btn-outline:hover{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.16)}
.hero-badge{display:inline-flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:.85rem}
.hero-badge svg{opacity:.6}

/* Hero Phone Mockup */
.hero-visual{position:relative;width:340px;flex-shrink:0}
.phone-mockup{position:relative;z-index:2}
.phone-back{position:absolute;top:40px;left:-60px;z-index:1;opacity:.7;transform:scale(.88) rotate(-6deg)}
.phone-frame{width:260px;height:520px;background:linear-gradient(145deg,#1a1a2e,#16213e);border-radius:40px;padding:12px;box-shadow:0 20px 60px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.1)}
.phone-notch{width:100px;height:24px;background:#0a0a14;border-radius:0 0 16px 16px;margin:0 auto 8px}
.phone-screen{flex:1;background:linear-gradient(180deg,#0f1923,#142338);border-radius:28px;height:calc(100% - 32px);overflow:hidden;display:flex;flex-direction:column}
.mock-gallery{flex:1;display:grid;grid-template-columns:repeat(3,1fr);gap:3px;padding:8px}
.mock-img{border-radius:4px;background:linear-gradient(135deg,hsl(var(--hue),45%,35%),hsl(var(--hue),55%,50%));min-height:0;height:var(--h,40%)}
.mock-img.selected{outline:2px solid var(--primary);outline-offset:-2px;position:relative}
.mock-img.selected::after{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(45,170,237,.2)}
.mock-toolbar{display:flex;justify-content:center;gap:12px;padding:10px;background:rgba(0,0,0,.4);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.mock-btn-t{font-size:10px;color:rgba(255,255,255,.5);padding:4px 12px;border-radius:6px}
.mock-btn-t.active{color:#fff;background:var(--primary);font-weight:600}
.mock-btn-icon{font-size:14px;color:var(--accent-green);font-weight:700}
.mock-long-img{flex:1;display:flex;flex-direction:column;gap:1px;padding:8px}
.mock-strip{flex:1;border-radius:4px;background:linear-gradient(180deg,hsl(var(--hue),40%,35%),hsl(var(--hue),50%,45%))}

/* ===== SECTIONS COMMON ===== */
.section-header{text-align:center;max-width:640px;margin:0 auto 64px}
.section-tag{display:inline-block;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--primary);background:rgba(45,170,237,.1);padding:6px 16px;border-radius:20px;margin-bottom:16px}
.section-title{font-size:2.2rem;font-size:clamp(1.8rem,3.5vw,2.8rem);font-weight:800;line-height:1.15;letter-spacing:-.02em;margin-bottom:16px}
.section-desc{color:var(--text-secondary);font-size:1.05rem;line-height:1.7}

/* ===== FEATURES ===== */
.features{padding:120px 0;position:relative}
.features::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 28px;transition:all var(--transition)}
.feature-card:hover{background:var(--bg-card-hover);border-color:rgba(255,255,255,.12);transform:translateY(-4px);box-shadow:0 16px 48px rgba(0,0,0,.2)}
.feature-icon{width:56px;height:56px;border-radius:14px;background:rgba(45,170,237,.1);display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:var(--accent,var(--primary))}
.feature-icon svg{width:28px;height:28px}
.feature-card h3{font-size:1.15rem;font-weight:700;margin-bottom:10px;letter-spacing:-.01em}
.feature-card p{color:var(--text-secondary);font-size:.9rem;line-height:1.65}

/* ===== WORKFLOW ===== */
.workflow{padding:120px 0;position:relative}
.workflow::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent)}
.steps{display:flex;align-items:flex-start;justify-content:center;gap:0}
.step{text-align:center;flex:1;max-width:300px;padding:0 16px}
.step-num{font-size:3.5rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--primary-dark));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin-bottom:20px}
.step-visual{width:140px;height:140px;margin:0 auto 24px;border-radius:var(--radius-xl);background:var(--bg-card);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.step h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.step p{color:var(--text-secondary);font-size:.88rem;line-height:1.6}
.step-connector{display:flex;align-items:center;padding-top:100px;width:60px;flex-shrink:0}
.connector-line{width:100%;height:2px;background:linear-gradient(90deg,var(--primary),rgba(45,170,237,.2));border-radius:1px}

/* Step illustrations */
.step-illustration{width:100%;height:100%;display:flex;align-items:center;justify-content:center;position:relative}
.step-ill-1{gap:6px;padding:20px}
.ill-photo{width:30px;height:40px;border-radius:4px;background:linear-gradient(135deg,hsl(200,40%,45%),hsl(200,50%,55%));box-shadow:0 2px 8px rgba(0,0,0,.2)}
.ill-photo:nth-child(2){background:linear-gradient(135deg,hsl(30,50%,50%),hsl(30,60%,60%));transform:translateY(-4px)}
.ill-photo:nth-child(3){background:linear-gradient(135deg,hsl(340,40%,45%),hsl(340,50%,55%));transform:translateY(4px)}
.ill-check{position:absolute;bottom:16px;right:16px;width:24px;height:24px;border-radius:50%;background:var(--primary);color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:700}
.step-ill-2{flex-direction:column;gap:4px;padding:24px 30px}
.ill-bar{width:100%;height:20px;border-radius:4px;background:linear-gradient(90deg,hsl(200,40%,40%),hsl(200,50%,50%));opacity:.8}
.ill-bar:nth-child(2){background:linear-gradient(90deg,hsl(160,40%,40%),hsl(160,50%,50%))}
.ill-bar:nth-child(3){background:linear-gradient(90deg,hsl(220,40%,40%),hsl(220,50%,50%))}
.ill-merge-arrow{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:24px;color:var(--primary);font-weight:700;animation:bounce 2s infinite}
@keyframes bounce{0%,100%{transform:translateY(-50%)}50%{transform:translateY(-40%)}}
.step-ill-3{padding:16px}
.ill-result{width:50px;height:90px;border-radius:6px;background:linear-gradient(180deg,hsl(200,40%,40%),hsl(160,40%,35%),hsl(220,40%,40%));box-shadow:0 4px 16px rgba(0,0,0,.3)}
.ill-share-icon{position:absolute;bottom:14px;right:14px;width:28px;height:28px;color:var(--primary)}
.ill-share-icon svg{width:100%;height:100%}

/* ===== SCENARIOS ===== */
.scenarios{padding:120px 0;position:relative}
.scenarios::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent)}
.scenarios-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.scenario-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 24px;text-align:center;transition:all var(--transition)}
.scenario-card:hover{background:var(--bg-card-hover);transform:translateY(-4px);border-color:rgba(255,255,255,.12)}
.scenario-icon{font-size:2.4rem;margin-bottom:16px;display:block}
.scenario-card h3{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.scenario-card p{color:var(--text-secondary);font-size:.85rem;line-height:1.6}

/* ===== CTA ===== */
.cta-section{padding:80px 0 120px}
.cta-card{position:relative;text-align:center;padding:80px 40px;border-radius:var(--radius-xl);background:linear-gradient(135deg,rgba(45,170,237,.12),rgba(108,92,231,.12));border:1px solid rgba(45,170,237,.15);overflow:hidden}
.cta-card::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 50%,rgba(45,170,237,.08),transparent 60%);pointer-events:none}
.cta-card h2{font-size:1.8rem;font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;line-height:1.2;margin-bottom:16px;position:relative}
.cta-card p{color:var(--text-secondary);font-size:1.05rem;max-width:500px;margin:0 auto 32px;position:relative;line-height:1.7}
.cta-badge{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;background:rgba(255,255,255,.06);border:1px solid var(--border);border-radius:12px;font-size:.9rem;font-weight:600;position:relative}
.cta-badge svg{opacity:.7}

/* ===== FOOTER ===== */
.footer{padding:40px 0;border-top:1px solid var(--border)}
.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.footer-brand{display:flex;align-items:center;gap:8px;font-weight:600;font-size:.95rem}
.footer-icon{width:24px;height:24px;border-radius:6px}
.footer-links{display:flex;gap:24px}
.footer-links a{font-size:.85rem;color:var(--text-secondary);transition:color var(--transition)}
.footer-links a:hover{color:var(--text)}
.footer-copy{font-size:.8rem;color:var(--text-secondary);opacity:.5}

/* ===== REVEAL ANIMATION ===== */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s cubic-bezier(.4,0,.2,1),transform .7s cubic-bezier(.4,0,.2,1)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .scenarios-grid{grid-template-columns:repeat(2,1fr)}
  .hero-inner{gap:48px}
  .hero-visual{width:280px}
  .phone-frame{width:220px;height:440px;border-radius:32px}
  .phone-back{left:-40px;top:30px}
}
@media(max-width:768px){
  .nav{display:none}
  .hero-inner{flex-direction:column;text-align:center}
  .hero-subtitle{margin:0 auto 36px}
  .hero-actions{justify-content:center}
  .hero-badge{justify-content:center}
  .hero-visual{width:260px;margin:0 auto}
  .phone-back{display:none}
  .features-grid{grid-template-columns:1fr}
  .steps{flex-direction:column;align-items:center}
  .step-connector{width:2px;height:40px;padding:0}
  .step-connector .connector-line{width:2px;height:100%}
  .scenarios-grid{grid-template-columns:1fr 1fr}
  .footer-inner{flex-direction:column;text-align:center}
}
@media(max-width:480px){
  .scenarios-grid{grid-template-columns:1fr}
  .hero-title{font-size:2rem}
  .cta-card{padding:48px 24px}
}

/* ===== iOS Safe Area ===== */
@supports(padding:env(safe-area-inset-top)){
  .header{padding-top:calc(16px + env(safe-area-inset-top))}
  .hero{padding-top:calc(120px + env(safe-area-inset-top))}
  .footer{padding-bottom:calc(40px + env(safe-area-inset-bottom))}
  .container{padding-left:calc(24px + env(safe-area-inset-left));padding-right:calc(24px + env(safe-area-inset-right))}
}

/* ===== Touch device optimizations ===== */
@media(hover:none){
  .feature-card:hover,.scenario-card:hover,.btn-primary:hover{transform:none}
  .feature-card:active{background:var(--bg-card-hover)}
  .scenario-card:active{background:var(--bg-card-hover)}
  .btn-primary:active{transform:translateY(-1px)}
}