:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #f8f9fd;
  --text: #20232d;
  --muted: #5c6576;
  --line: #e4e8f0;
  --brand: #364179;
  --accent: #4bbcc2;
  --accent-soft: #e6f6f7;
  --violet-soft: #eee8ff;
  --shadow: 0 18px 48px rgba(33, 39, 55, 0.08);
  --radius: 24px;
  --radius-sm: 16px;
  --container: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #fafbfe 0%, #f3f6fb 100%);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
.topbar {
  position: sticky; top: 0; z-index: 30;
  backdrop-filter: blur(18px);
  background: rgba(250, 251, 254, 0.85);
  border-bottom: 1px solid rgba(228, 232, 240, 0.7);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 84px; }
.brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand-mark {
  width: 48px; height: 48px; border-radius: 14px; background: white; display:flex; align-items:center; justify-content:center;
  box-shadow: 0 10px 30px rgba(54,65,121,0.12); padding: 6px;
}
.brand-copy { min-width: 0; }
.brand-title { font-weight: 800; font-size: 1.55rem; letter-spacing: -0.04em; line-height: 1; color: var(--brand); }
.brand-title span { color: var(--accent); }
.brand-tag { color: var(--muted); font-size: .87rem; margin-top: 4px; white-space: nowrap; }
.menu-btn {
  display: none; appearance: none; border: 0; background: white; width: 46px; height: 46px; border-radius: 14px;
  box-shadow: var(--shadow); color: var(--brand); font-size: 1.3rem; font-weight: 700;
}
.nav-links { display: flex; align-items: center; gap: 22px; font-weight: 600; font-size: 0.95rem; }
.nav-links a:not(.cta):not(.lang-switch) { color: #394256; }
.lang-switch { padding: 10px 14px; border: 1px solid var(--line); border-radius: 999px; background: white; }
.cta {
  padding: 14px 22px; border-radius: 999px; background: linear-gradient(135deg, #8158ff 0%, #6a4bff 100%);
  color: white; box-shadow: 0 14px 28px rgba(106, 75, 255, 0.22);
}
.hero { padding: 42px 0 68px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 36px; align-items: center; }
.badge {
  display: inline-flex; align-items: center; gap: 10px; padding: 10px 16px; border-radius: 999px;
  background: var(--violet-soft); color: #6848c8; font-weight: 700; font-size: .92rem;
}
.badge::before { content: ''; width: 10px; height: 10px; border-radius: 999px; background: var(--accent); }
.hero h1 { margin: 18px 0 18px; font-size: clamp(2.7rem, 5.5vw, 4.5rem); line-height: 1.05; letter-spacing: -0.05em; }
.hero p.lead { color: var(--muted); font-size: 1.18rem; line-height: 1.75; margin: 0 0 22px; max-width: 760px; }
.checks { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.checks li {
  display: flex; gap: 12px; align-items: flex-start; color: #3f4858; line-height: 1.6; font-size: 1rem;
}
.checks li::before {
  content: ''; width: 12px; height: 12px; border-radius: 999px; background: linear-gradient(135deg, #8158ff 0%, var(--accent) 100%);
  margin-top: 7px; flex: 0 0 12px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; padding: 15px 24px; border-radius: 999px; font-weight: 700; }
.button.primary { background: linear-gradient(135deg, #8158ff 0%, #6a4bff 100%); color: white; box-shadow: 0 16px 32px rgba(106,75,255,0.24); }
.button.secondary { background: white; border: 1px solid var(--line); color: var(--brand); }
.hero-note { margin-top: 14px; color: var(--muted); font-size: .96rem; }
.hero-visual {
  position: relative; background: radial-gradient(circle at 20% 20%, rgba(129,88,255,0.10), transparent 32%),
  radial-gradient(circle at 80% 10%, rgba(75,188,194,0.18), transparent 28%), white;
  border: 1px solid var(--line); border-radius: 32px; padding: 18px; box-shadow: var(--shadow);
}
.hero-visual .cover-strip { border-radius: 20px; overflow: hidden; margin-bottom: 18px; border: 1px solid var(--line); }
.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-tags span { padding: 10px 14px; border-radius: 999px; font-weight: 700; font-size: .92rem; }
.hero-tags span:nth-child(1) { background: var(--violet-soft); color: #704fe4; }
.hero-tags span:nth-child(2) { background: var(--accent-soft); color: #2f8488; }
.hero-tags span:nth-child(3) { background: #edf1fb; color: var(--brand); }
.section { padding: 86px 0; }
.section.alt { background: rgba(255,255,255,0.72); border-top: 1px solid rgba(228,232,240,.75); border-bottom: 1px solid rgba(228,232,240,.75); }
.section-head { margin-bottom: 30px; }
.kicker { color: #7a57ea; font-size: .88rem; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; }
.section h2 { margin: 10px 0 12px; font-size: clamp(2rem, 3.5vw, 3rem); line-height: 1.08; letter-spacing: -0.04em; }
.section p.subtitle { margin: 0; max-width: 760px; color: var(--muted); font-size: 1.08rem; line-height: 1.75; }
.grid-4, .grid-3, .grid-2 { display: grid; gap: 22px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: white; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow);
}
.iconbox {
  width: 52px; height: 52px; border-radius: 16px; display: inline-flex; align-items:center; justify-content:center;
  background: linear-gradient(135deg, rgba(129,88,255,.16) 0%, rgba(75,188,194,.18) 100%); color: var(--brand);
  font-weight: 800; margin-bottom: 16px;
}
.card h3 { margin: 0 0 10px; font-size: 1.15rem; letter-spacing: -0.03em; }
.card p { margin: 0; color: var(--muted); line-height: 1.7; }
.module-card { position: relative; overflow: hidden; }
.module-card::after {
  content: ''; position:absolute; right:-40px; top:-40px; width:120px; height:120px; border-radius:999px;
  background: linear-gradient(135deg, rgba(129,88,255,.08), rgba(75,188,194,.16));
}
.list-panel { display: grid; gap: 14px; }
.list-item {
  display:flex; gap: 14px; align-items:flex-start; padding: 18px 20px; background:white; border:1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow);
}
.list-item strong { display:block; margin-bottom: 5px; }
.list-item .dot { width: 12px; height:12px; border-radius: 999px; background: linear-gradient(135deg, #8158ff 0%, var(--accent) 100%); margin-top: 8px; }
.output-band {
  display:grid; grid-template-columns: 1.05fr .95fr; gap: 24px; align-items: center;
  background: linear-gradient(135deg, rgba(129,88,255,.08) 0%, rgba(75,188,194,.08) 100%);
  border: 1px solid var(--line); border-radius: 32px; padding: 28px; box-shadow: var(--shadow);
}
.output-band ul { margin: 18px 0 0; padding-left: 18px; color: var(--muted); line-height: 1.85; }
.output-preview { background: white; border:1px solid var(--line); border-radius: 24px; padding: 20px; }
.output-preview .row { display:flex; gap: 14px; margin-bottom: 14px; }
.output-preview .pill { height: 16px; border-radius: 999px; background: #eef1f7; }
.output-preview .pill.w1 { width: 32%; }
.output-preview .pill.w2 { width: 52%; }
.output-preview .pill.w3 { width: 72%; }
.output-preview .panel { height: 98px; border-radius: 18px; background: linear-gradient(135deg, #f7f8fc 0%, #edf2f8 100%); border:1px solid var(--line); margin-bottom: 12px; }
.contact {
  background: linear-gradient(135deg, #2f3b70 0%, #44518d 55%, #4c7ea0 100%);
  color: white; border-radius: 32px; padding: 30px; box-shadow: var(--shadow);
}
.contact-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.contact p { color: rgba(255,255,255,.84); line-height: 1.75; }
.form-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid .full { grid-column: 1 / -1; }
.input, textarea {
  width:100%; border:1px solid rgba(255,255,255,.16); background: rgba(255,255,255,.08); color:white; border-radius: 16px;
  padding: 14px 16px; font: inherit; outline:none;
}
.input::placeholder, textarea::placeholder { color: rgba(255,255,255,.64); }
textarea { min-height: 120px; resize: vertical; }
.submit { border:0; cursor:pointer; }
.footer { padding: 26px 0 44px; color: var(--muted); }
.footer-row { display:flex; align-items:center; justify-content:space-between; gap: 24px; flex-wrap: wrap; }
.footer-contact { display:grid; gap:6px; text-align:right; }
.footer-contact a { color: var(--brand); font-weight: 700; }
.small { font-size: .92rem; }
@media (max-width: 1120px) {
  .hero-grid, .output-band, .contact-grid, .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .nav-links { gap: 16px; font-size: .9rem; }
}
@media (max-width: 860px) {
  .menu-btn { display: inline-flex; align-items:center; justify-content:center; }
  .nav-links {
    display:none; position:absolute; top:84px; left:20px; right:20px; flex-direction:column; align-items:stretch; padding: 18px;
    background:white; border:1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow);
  }
  .nav-links.open { display:flex; }
  .hero-grid, .output-band, .contact-grid, .grid-4, .grid-3, .grid-2, .form-grid { grid-template-columns: 1fr; }
  .brand-tag { display:none; }
  .footer-contact { text-align:left; width:100%; order:3; }
  .hero { padding-top: 28px; }
  .section { padding: 64px 0; }
}
@media (max-width: 560px) {
  .container { width: min(var(--container), calc(100% - 24px)); }
  .hero h1 { font-size: 2.45rem; }
  .brand-title { font-size: 1.35rem; }
}