@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --blue: #3D73DA;
  --blue-hover: #325EB3;
  --ink: #212121;
  --muted: #424242;
  --page: #F7F7F8;
  --card: #FFFFFF;
  --line: #E3E3E3;
  --soft: #E8EEFB;
  --dark: #171E25;
  --yellow: #FEDC1D;
  --radius: 16px;
  --max: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--page);
  color: var(--ink);
  font-family: Inter, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
a, button, summary { -webkit-tap-highlight-color: transparent; }
.container { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }

.site-header { background: var(--blue); color: var(--card); }
.header-row { min-height: 80px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 16px; flex: 0 0 auto; font-weight: 700; letter-spacing: -.02em; }
.brand img { width: 132px; height: auto; }
.brand span { padding-left: 16px; border-left: 1px solid rgba(255,255,255,.35); }
.header-nav { display: flex; align-items: center; gap: 28px; margin-left: auto; font-size: 14px; font-weight: 500; }
.header-nav a { opacity: .8; transition: opacity .2s ease; }
.header-nav a:hover { opacity: 1; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 10px 22px; border-radius: var(--radius); font-weight: 700; line-height: 1; transition: background .2s ease, color .2s ease, transform .2s ease; }
.button:hover { transform: translateY(-1px); }
.button:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid var(--yellow); outline-offset: 3px; }
.button-light { background: var(--card); color: var(--blue); }
.button-light:hover { color: var(--blue-hover); }
.button-primary { background: var(--blue); color: var(--card); }
.button-primary:hover { background: var(--blue-hover); }

.hero { min-height: calc(100vh - 80px); background: var(--blue); color: var(--card); display: flex; align-items: center; padding: 64px 0 80px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(440px, .82fr); gap: 64px; align-items: center; }
.eyebrow, .kicker { margin: 0 0 16px; font-size: 12px; line-height: 1.3; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow { color: var(--card); opacity: .72; }
h1, h2, h3, p { overflow-wrap: break-word; }
h1 { max-width: 720px; margin: 0; font-size: clamp(64px, 7vw, 104px); line-height: .98; letter-spacing: -.065em; font-weight: 800; }
h1 span { color: var(--yellow); text-decoration: underline; text-decoration-thickness: 5px; text-underline-offset: 8px; }
.hero-lead { max-width: 660px; margin: 32px 0 0; color: var(--card); font-size: 20px; line-height: 1.55; }
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 48px; border: 1px solid rgba(255,255,255,.3); border-radius: var(--radius); overflow: hidden; }
.hero-facts div { padding: 20px; background: rgba(23,30,37,.14); }
.hero-facts strong, .hero-facts span { display: block; }
.hero-facts strong { font-size: 16px; }
.hero-facts span { margin-top: 2px; font-size: 12px; opacity: .72; }

.hero-visual { position: relative; min-height: 520px; }
.chat-panel, .preview-panel { position: absolute; border-radius: var(--radius); overflow: hidden; box-shadow: 0 24px 64px rgba(23,30,37,.22); }
.chat-panel { z-index: 2; width: 74%; left: 0; top: 28px; background: var(--dark); padding: 20px; }
.panel-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-bottom: 18px; font-size: 12px; font-weight: 700; }
.panel-status { color: var(--card); opacity: .54; }
.chat-line { margin-top: 12px; padding: 16px; border-radius: 12px; font-size: 13px; line-height: 1.5; }
.user-line { margin-left: 24px; background: var(--blue); color: var(--card); }
.ai-line { margin-right: 24px; background: var(--card); color: var(--ink); }
.file-strip { display: flex; gap: 8px; margin-top: 18px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.12); }
.file-strip span { padding: 5px 8px; border: 1px solid rgba(255,255,255,.18); border-radius: 6px; color: var(--card); font-size: 10px; }
.preview-panel { z-index: 3; width: 70%; right: 0; bottom: 24px; background: var(--card); color: var(--ink); border: 1px solid var(--line); }
.browser-bar { height: 38px; display: flex; align-items: center; gap: 6px; padding: 0 12px; background: var(--page); border-bottom: 1px solid var(--line); font-size: 10px; color: var(--muted); }
.browser-bar i { width: 6px; height: 6px; border-radius: 50%; background: var(--line); }
.browser-bar span { margin-left: 6px; }
.preview-page { padding: 28px 28px 32px; }
.preview-page small { color: var(--blue); font-weight: 800; font-size: 9px; letter-spacing: .1em; }
.preview-page b { display: block; max-width: 280px; margin-top: 12px; font-size: 25px; line-height: 1.12; letter-spacing: -.04em; }
.preview-page p { margin: 12px 0 0; color: var(--muted); font-size: 11px; }
.preview-rule { width: 48px; height: 3px; margin-top: 20px; background: var(--blue); }
.preview-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 24px; }
.preview-cards span { height: 52px; border: 1px solid var(--line); border-radius: 8px; background: var(--page); }
.type-stamp { position: absolute; z-index: 4; right: 8px; top: 0; padding: 10px 12px; border: 1px solid rgba(255,255,255,.6); color: var(--card); font-size: 10px; line-height: 1.3; font-weight: 800; letter-spacing: .12em; transform: rotate(3deg); }

.trust-row { border-bottom: 1px solid var(--line); background: var(--card); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-grid div { padding: 28px 24px; border-left: 1px solid var(--line); }
.trust-grid div:last-child { border-right: 1px solid var(--line); }
.trust-grid strong, .trust-grid span { display: block; }
.trust-grid strong { font-size: 15px; }
.trust-grid span { margin-top: 2px; color: var(--muted); font-size: 12px; }

.section { padding: 112px 0; }
.section-heading { max-width: 720px; margin-bottom: 48px; }
.kicker { color: var(--blue); }
h2 { margin: 0; font-size: clamp(40px, 5vw, 64px); line-height: 1.05; letter-spacing: -.05em; }
.section-heading > p:last-child, .split-copy > p, .editor-copy > p { color: var(--muted); font-size: 18px; }
.section-heading > p:last-child { max-width: 650px; margin: 24px 0 0; }
.offer-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.offer-card { position: relative; min-height: 300px; padding: 32px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
.card-number { display: block; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.offer-card h3 { max-width: 360px; margin: 56px 0 12px; font-size: 26px; line-height: 1.15; letter-spacing: -.035em; }
.offer-card p { max-width: 480px; margin: 0; color: var(--muted); }

.split-section { background: var(--soft); }
.split-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 96px; align-items: start; }
.split-copy > p { margin: 24px 0 0; }
.capability-list { border-top: 1px solid rgba(61,115,218,.25); }
.capability { display: grid; grid-template-columns: 130px 1fr; gap: 24px; padding: 26px 0; border-bottom: 1px solid rgba(61,115,218,.25); }
.capability span { color: var(--blue); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.capability strong { font-size: 17px; line-height: 1.45; }

.editor-section { padding: 112px 0; background: var(--dark); color: var(--card); }
.editor-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 88px; align-items: center; }
.editor-board { overflow: hidden; border-radius: var(--radius); background: var(--card); color: var(--ink); }
.editor-toolbar { display: flex; flex-wrap: wrap; gap: 6px; padding: 12px; border-bottom: 1px solid var(--line); background: var(--page); }
.editor-toolbar span, .editor-toolbar b, .editor-toolbar em, .editor-toolbar u, .editor-toolbar s { min-width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center; padding: 0 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); font-size: 11px; font-style: normal; }
.editor-content { padding: 48px; }
.editor-content small { color: var(--blue); font-size: 10px; font-weight: 800; letter-spacing: .12em; }
.editor-content h3 { margin: 16px 0 8px; font-size: 32px; letter-spacing: -.04em; }
.editor-content p { color: var(--muted); }
.selection { display: inline-block; margin-top: 24px; padding: 4px 6px; background: var(--soft); border-bottom: 2px solid var(--blue); }
.editor-copy .kicker { color: var(--card); opacity: .62; }
.editor-copy > p { color: var(--card); opacity: .76; }

.plan-heading { margin-bottom: 40px; }
.plans-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.plan-card { min-height: 176px; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
.plan-card.current { background: var(--blue); border-color: var(--blue); color: var(--card); }
.plan-card span { display: inline-block; color: var(--blue); font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.plan-card h3 { margin: 32px 0 4px; font-size: 24px; line-height: 1.2; }
.plan-card.current h3 { margin-top: 51px; }
.plan-card p { margin: 0; color: var(--muted); font-size: 13px; }
.plan-card.current p { color: var(--card); opacity: .76; }

.faq-section { padding-top: 32px; }
.faq-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 88px; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { position: relative; padding: 24px 48px 24px 0; cursor: pointer; list-style: none; font-size: 18px; font-weight: 700; }
summary::-webkit-details-marker { display: none; }
summary:after { content: "+"; position: absolute; right: 4px; top: 22px; color: var(--blue); font-size: 24px; line-height: 1; }
details[open] summary:after { content: "-"; }
details p { max-width: 680px; margin: -8px 48px 24px 0; color: var(--muted); }

.final-cta { padding: 80px 0; background: var(--dark); color: var(--card); }
.final-grid { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: end; }
.final-grid h2 { max-width: 760px; }
.final-grid p:last-child { margin: 20px 0 0; color: var(--card); opacity: .72; font-size: 18px; }
.kicker-light { color: var(--card); opacity: .58; }
.final-grid .button { min-width: 220px; }

.site-footer { padding: 56px 0; background: var(--dark); color: var(--card); border-top: 1px solid rgba(255,255,255,.12); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 64px; }
.footer-brand p { margin: 20px 0 0; color: var(--card); opacity: .58; }
.footer-links { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; font-size: 13px; }
.footer-links strong { margin-bottom: 4px; }
.footer-links a, .footer-links span { color: var(--card); opacity: .6; }
.footer-links a:hover { opacity: 1; }

@media (max-width: 1000px) {
  .header-nav { display: none; }
  .header-row .button { margin-left: auto; }
  .hero-grid { grid-template-columns: 1fr 420px; gap: 32px; }
  .hero-visual { min-height: 480px; }
  .split-grid, .editor-grid { gap: 48px; }
  .plans-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 799px) {
  .container { width: min(calc(100% - 32px), var(--max)); }
  .header-row { min-height: 72px; gap: 12px; flex-wrap: wrap; padding: 12px 0; }
  .brand { gap: 10px; }
  .brand img { width: 108px; }
  .brand span { padding-left: 10px; font-size: 13px; }
  .header-row .button { min-height: 42px; padding: 8px 16px; font-size: 13px; }
  .hero { min-height: calc(100vh - 72px); padding: 56px 0 64px; }
  .hero-grid, .split-grid, .editor-grid, .faq-grid, .final-grid { grid-template-columns: 1fr; }
  .hero-grid { gap: 48px; }
  h1 { font-size: clamp(56px, 16vw, 78px); }
  .hero-lead { font-size: 18px; }
  .hero-visual { width: min(100%, 520px); min-height: 480px; margin-inline: auto; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid div:nth-child(2) { border-right: 1px solid var(--line); }
  .section, .editor-section { padding: 80px 0; }
  .offer-grid { grid-template-columns: 1fr; }
  .offer-card { min-height: 260px; }
  .offer-card h3 { margin-top: 40px; }
  .editor-grid { gap: 48px; }
  .editor-board { order: 2; }
  .plans-grid { grid-template-columns: repeat(2, 1fr); }
  .faq-section { padding-top: 0; }
  .faq-grid { gap: 24px; }
  .final-grid { gap: 32px; align-items: start; }
  .final-grid .button { justify-self: start; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 520px) {
  .container { width: min(calc(100% - 24px), var(--max)); }
  .brand img { width: 96px; }
  .brand span { font-size: 12px; }
  .header-row .button { padding-inline: 13px; }
  h1 { font-size: 52px; }
  h2 { font-size: 38px; }
  .hero-facts { grid-template-columns: 1fr; }
  .hero-facts div { padding: 14px 16px; }
  .hero-visual { min-height: 420px; }
  .chat-panel { width: 88%; padding: 14px; }
  .preview-panel { width: 84%; }
  .type-stamp { right: 0; }
  .preview-page { padding: 22px; }
  .preview-page b { font-size: 21px; }
  .trust-grid { grid-template-columns: 1fr; }
  .trust-grid div, .trust-grid div:nth-child(2), .trust-grid div:last-child { border-right: 1px solid var(--line); }
  .offer-card { padding: 24px; }
  .capability { grid-template-columns: 1fr; gap: 8px; }
  .editor-content { padding: 32px 24px; }
  .plans-grid { grid-template-columns: 1fr; }
  .plan-card { min-height: 152px; }
  .plan-card.current h3 { margin-top: 32px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-brand { grid-column: auto; }
}