/* Public website. Mobile first; breakpoints at 720px (tablet) and 1024px (desktop). */
@font-face {
  font-family: "Inter";
  src: url("/fonts/InterVariable.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
:root {
  --bg: #ffffff;
  --alt: #f4f5fb;
  --text: #1d2233;
  --muted: #646c82;
  --line: #e2e6f0;
  --brand: #5b5bf0;
  --brand-dark: #4343d6;
  --accent: #ffd34d;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(29, 34, 51, 0.08);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
  -webkit-font-smoothing: antialiased;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; }
img { max-width: 100%; height: auto; }
a { color: var(--brand); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 0.6em; }
h1 { font-size: clamp(1.9rem, 5vw, 3.2rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
.wrap { width: min(1160px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(780px, 100% - 32px); }
.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.lead { font-size: clamp(1.05rem, 2.2vw, 1.25rem); color: var(--muted); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: 10px; border: 1px solid var(--line); background: #fff; color: var(--text);
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; transition: transform .1s, box-shadow .2s, background .2s;
}
.btn:hover { box-shadow: var(--shadow); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-lg { padding: 14px 26px; font-size: 1.05rem; }
.btn.block { display: flex; width: 100%; }
.btn[disabled] { opacity: .6; cursor: progress; }

/* header */
.announce { background: var(--text); color: #fff; text-align: center; padding: 8px 16px; font-size: 0.9rem; }
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.header-row { display: flex; align-items: center; justify-content: space-between; min-height: 64px; position: relative; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--text); text-decoration: none; font-size: 1.1rem; }
.nav-toggle { position: absolute; opacity: 0; pointer-events: none; }
.burger { display: flex; flex-direction: column; gap: 5px; padding: 10px; cursor: pointer; }
.burger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: .2s; }
.site-nav {
  display: none; position: absolute; top: 64px; left: -16px; right: -16px; flex-direction: column; gap: 4px;
  padding: 12px 16px 18px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
}
.site-nav a { padding: 10px 6px; color: var(--text); text-decoration: none; font-weight: 500; }
.site-nav a.btn { margin-top: 6px; padding: 12px; }
.site-nav a.btn-primary { color: #fff; }
.nav-toggle:checked ~ .site-nav { display: flex; }
.nav-toggle:checked + .burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle:checked + .burger span:nth-child(2) { opacity: 0; }
.nav-toggle:checked + .burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav-toggle:focus-visible + .burger { outline: 2px solid var(--brand); border-radius: 8px; }

/* sections */
.section { padding: 56px 0; }
.section.alt { background: var(--alt); }
.hero { padding: 40px 0 56px; background: radial-gradient(1200px 500px at 80% -10%, #e9e9ff 0, transparent 60%), linear-gradient(#fff, #f7f7ff); }
.hero-grid { display: grid; gap: 32px; align-items: center; }
.hero-media { margin: 0; }
.hero-media img { border-radius: 18px; box-shadow: 0 25px 60px rgba(29, 34, 51, 0.18); display: block; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 12px; }
.steps, .features, .uses, .post-grid, .packs { display: grid; gap: 18px; }
.step, .feature, .uses > div, .pack, .card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.step .num { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: var(--brand); color: #fff; font-weight: 700; margin-bottom: 10px; }
.feature .icon { font-size: 1.8rem; margin-bottom: 8px; }
.cta-band { background: linear-gradient(135deg, #5b5bf0, #8c5bf0); color: #fff; }
.cta-band .btn-primary { background: #fff; color: var(--brand); border-color: #fff; }

/* pricing */
.currency-toggle { display: flex; justify-content: center; gap: 0; margin: 20px auto 28px; width: max-content; border: 1px solid var(--line); border-radius: 999px; padding: 4px; background: #fff; }
.currency-toggle button { border: 0; background: transparent; padding: 6px 16px; border-radius: 999px; font: inherit; cursor: pointer; color: var(--muted); }
.currency-toggle button.active { background: var(--brand); color: #fff; }
.plans { display: grid; gap: 18px; }
.plan { position: relative; display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; }
.plan.featured { border: 2px solid var(--brand); box-shadow: var(--shadow); }
.plan .badge { position: absolute; top: -12px; left: 22px; background: var(--brand); color: #fff; font-size: 0.75rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.plan .btn { margin-top: auto; }
.price { font-size: 2rem; font-weight: 800; }
.checks { list-style: none; padding: 0; margin: 0 0 22px; }
.checks li { padding: 5px 0 5px 26px; position: relative; }
.checks li::before { content: "✓"; position: absolute; left: 0; color: #1f9d63; font-weight: 700; }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.cost-table { width: 100%; border-collapse: collapse; min-width: 520px; background: #fff; border-radius: var(--radius); overflow: hidden; }
.cost-table th, .cost-table td { padding: 12px 14px; border-bottom: 1px solid var(--line); text-align: left; }
.cost-table thead th { background: var(--alt); }

/* faq */
.faq { border-bottom: 1px solid var(--line); padding: 14px 0; }
.faq summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::after { content: "+"; font-size: 1.3rem; color: var(--brand); }
.faq[open] summary::after { content: "–"; }
.faq p { margin: 10px 0 0; color: var(--muted); }

/* blog */
.post-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.post-card img { aspect-ratio: 16 / 9; object-fit: cover; width: 100%; }
.post-card .pad { padding: 18px; }
.post-card h3 a { color: var(--text); text-decoration: none; }
.post-card h3 a:hover { color: var(--brand); }
.pager { display: flex; justify-content: space-between; align-items: center; margin-top: 30px; }
.crumbs a { color: var(--muted); }
.cover { border-radius: var(--radius); margin: 10px 0 24px; width: 100%; }
.prose { font-size: 1.06rem; }
.prose h2 { margin-top: 1.6em; }
.prose img { border-radius: 10px; }
.prose blockquote { border-left: 4px solid var(--brand); margin: 1.2em 0; padding: 8px 18px; background: var(--alt); border-radius: 0 10px 10px 0; }
.prose pre { background: #1d2233; color: #e8eaf3; padding: 14px; border-radius: 10px; overflow-x: auto; }
.prose iframe, .prose video { max-width: 100%; border-radius: 10px; }
.prose table { border-collapse: collapse; width: 100%; }
.prose td, .prose th { border: 1px solid var(--line); padding: 8px; }
.tags a { display: inline-block; margin: 0 6px 6px 0; padding: 3px 10px; background: var(--alt); border-radius: 999px; text-decoration: none; font-size: 0.85rem; }
.cta-inline { margin-top: 36px; text-align: center; background: var(--alt); }

/* forms */
.form { display: grid; gap: 14px; }
.form label { display: grid; gap: 6px; font-weight: 600; font-size: 0.95rem; }
.form label.check { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; }
.form input:not([type=checkbox]), .form textarea, .form select {
  width: 100%; padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px; font: inherit; background: #fff;
}
.form input:focus, .form textarea:focus { outline: 2px solid var(--brand); outline-offset: 1px; border-color: transparent; }
.form-msg { min-height: 1.4em; margin: 0; }
.form-msg.error { color: #c0392b; }
.form-msg.ok { color: #1f9d63; }
.notice { background: #fff8e1; border: 1px solid #ffe08a; padding: 10px 12px; border-radius: 10px; }
.auth { background: var(--alt); min-height: calc(100vh - 64px - 240px); }
.auth-card { max-width: 420px; margin: 0 auto; }
.contact-grid { display: grid; gap: 28px; }

/* footer */
.site-footer { background: #151a2b; color: #c9cee0; padding: 44px 0 20px; }
.site-footer a { color: #c9cee0; text-decoration: none; display: block; padding: 3px 0; }
.site-footer a:hover { color: #fff; }
.site-footer .logo { color: #fff; }
.site-footer h3 { color: #fff; font-size: 0.95rem; margin-bottom: 10px; }
.footer-grid { display: grid; gap: 26px; grid-template-columns: 1fr 1fr; }
.footer-grid > div:first-child { grid-column: 1 / -1; }
.footer-bottom { margin-top: 28px; padding-top: 18px; border-top: 1px solid #2a3149; display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; }
.footer-bottom a { display: inline; }

/* tablet */
@media (min-width: 720px) {
  .steps, .uses { grid-template-columns: repeat(2, 1fr); }
  .features, .post-grid, .packs { grid-template-columns: repeat(2, 1fr); }
  .plans { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr 1fr; align-items: start; }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: auto; }
  .section { padding: 72px 0; }
}

/* desktop */
@media (min-width: 1024px) {
  .burger { display: none; }
  .site-nav { display: flex; position: static; flex-direction: row; align-items: center; gap: 6px; padding: 0; background: none; border: 0; box-shadow: none; }
  .site-nav a { padding: 8px 12px; }
  .site-nav a.btn { margin: 0 0 0 6px; padding: 9px 16px; }
  .hero { padding: 72px 0 88px; }
  .hero-grid { grid-template-columns: 1.05fr 1fr; gap: 48px; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .features, .post-grid, .packs { grid-template-columns: repeat(3, 1fr); }
  .uses { grid-template-columns: repeat(4, 1fr); }
  .plans { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
}

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* captcha */
.captcha-math { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.captcha-math .captcha-line { display: flex; align-items: center; gap: 8px; font-weight: 500; }
.captcha-text { white-space: nowrap; }
.captcha-q { font-weight: 700; }
.form .captcha-line input { width: 68px; flex: none; padding: 9px 8px; text-align: center; font-weight: 700; }
.captcha-refresh { flex: none; border: 1px solid var(--line); background: #fff; border-radius: 10px; width: 40px; height: 40px; font-size: 17px; cursor: pointer; color: var(--muted); }
.captcha-refresh:hover { color: var(--brand); border-color: var(--brand); }
.captcha-box { min-height: 65px; }

/* auth pages */
.auth { background: radial-gradient(900px 400px at 50% -10%, #e9e9ff 0, transparent 60%), var(--alt); }
.auth-card { box-shadow: 0 24px 60px -24px rgba(29, 34, 51, 0.25); border-radius: 18px; padding: 30px 28px; }
.auth-card h1 { font-size: 1.6rem; text-align: center; margin-bottom: 18px; }
@media (max-width: 420px) { .auth-card { padding: 26px 20px; } }
@media (max-width: 374px) { .captcha-label { display: none; } }