:root {
  color-scheme: light;
  --canvas: #f4f7f4;
  --surface: #ffffff;
  --surface-soft: #edf3ee;
  --ink: #12211d;
  --muted: #64736e;
  --line: #d7e1db;
  --accent: #c7f36b;
  --accent-deep: #80b34f;
  --blue: #277a89;
  --warm: #e9a95f;
  --danger: #b34e43;
  --shadow: 0 18px 50px rgba(32, 60, 48, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { min-width: 320px; min-height: 100vh; margin: 0; background: var(--canvas); color: var(--ink); font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
button, input { font: inherit; }
button { border: 0; }
a { color: inherit; }

.site-header { position: sticky; z-index: 10; top: 0; display: flex; width: min(1180px, calc(100% - 48px)); min-height: 80px; margin: 0 auto; align-items: center; justify-content: space-between; gap: 30px; background: rgba(244, 247, 244, .94); border-bottom: 1px solid rgba(215, 225, 219, .8); backdrop-filter: blur(14px); }
.brand, .footer-brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark { display: grid; width: 38px; height: 38px; place-items: center; border-radius: 50%; background: var(--ink); color: var(--accent); font-size: 20px; font-weight: 800; }
.brand-name { display: grid; font-size: 18px; font-weight: 800; line-height: 1.05; }
.brand-name small { margin-top: 3px; color: var(--muted); font-size: 10px; font-weight: 600; text-transform: uppercase; }
.site-nav { display: flex; align-items: center; gap: 26px; margin-left: auto; }
.site-nav a, .footer-links a { color: var(--muted); font-size: 14px; font-weight: 650; text-decoration: none; }
.site-nav a:hover, .footer-links a:hover { color: var(--ink); }
.button { display: inline-flex; min-height: 48px; padding: 0 20px; align-items: center; justify-content: center; gap: 12px; border-radius: 7px; cursor: pointer; font-size: 14px; font-weight: 750; transition: transform .18s ease, background .18s ease, box-shadow .18s ease; }
.button:hover { transform: translateY(-1px); }
.button:focus-visible, .round-arrow:focus-visible, .service-card:focus-visible, .method-switch button:focus-visible, summary:focus-visible, a:focus-visible { outline: 3px solid rgba(39, 122, 137, .35); outline-offset: 3px; }
.button-dark { background: var(--ink); color: #fff; box-shadow: 0 8px 20px rgba(18, 33, 29, .13); }
.button-dark:hover { background: #253b34; }
.button-accent { background: var(--accent); color: var(--ink); box-shadow: 0 8px 20px rgba(128, 179, 79, .2); }
.button-accent:hover { background: #d6f78b; }
.header-action { min-height: 42px; padding-inline: 16px; }
.full-width { width: 100%; }

main { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.workspace { display: grid; min-height: 570px; padding: 82px 0 74px; grid-template-columns: minmax(0, 1.04fr) minmax(350px, .76fr); align-items: center; gap: clamp(52px, 8vw, 120px); }
.eyebrow { margin: 0 0 16px; color: var(--blue); font-size: 11px; font-weight: 800; line-height: 1.2; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 24px; font-size: clamp(48px, 6vw, 72px); font-weight: 760; letter-spacing: -1.5px; line-height: .98; }
h1 em { color: var(--blue); font-style: normal; }
.intro-text { max-width: 510px; margin-bottom: 30px; color: var(--muted); font-size: 18px; line-height: 1.55; }
.intro-actions { display: flex; align-items: center; gap: 22px; }
.text-link { color: var(--ink); font-size: 14px; font-weight: 750; text-decoration: none; }
.text-link:hover { color: var(--blue); }
.trust-row { display: flex; flex-wrap: wrap; margin-top: 46px; gap: 18px; color: var(--muted); font-size: 12px; font-weight: 650; }
.trust-row span { display: inline-flex; align-items: center; gap: 8px; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-deep); box-shadow: 0 0 0 4px rgba(128, 179, 79, .13); }

.calculator { padding: 28px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); box-shadow: var(--shadow); }
.calculator-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.calculator-head .eyebrow { margin-bottom: 8px; }
.calculator h2 { margin-bottom: 0; font-size: 29px; letter-spacing: -.4px; line-height: 1.1; }
.live-label { display: inline-flex; padding: 7px 9px; align-items: center; gap: 6px; border-radius: 999px; background: var(--surface-soft); color: var(--blue); font-size: 11px; font-weight: 750; white-space: nowrap; }
.live-label i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-deep); }
.amount-field { margin-top: 34px; }
.amount-field label { display: block; margin-bottom: 8px; color: var(--muted); font-size: 12px; font-weight: 700; }
.amount-control { display: flex; min-height: 62px; align-items: center; border-bottom: 1px solid var(--ink); }
.amount-control input { width: 100%; padding: 0; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: 34px; font-weight: 760; }
.amount-control input::-webkit-outer-spin-button, .amount-control input::-webkit-inner-spin-button { margin: 0; appearance: none; }
.amount-control input { appearance: textfield; }
.amount-control span { color: var(--muted); font-size: 14px; font-weight: 750; }
.method-switch { display: grid; margin-top: 25px; padding: 4px; grid-template-columns: 1fr 1fr; border-radius: 7px; background: var(--surface-soft); }
.method-switch button { min-height: 37px; border-radius: 5px; background: transparent; color: var(--muted); cursor: pointer; font-size: 13px; font-weight: 750; }
.method-switch button.active { background: var(--surface); color: var(--ink); box-shadow: 0 2px 8px rgba(18, 33, 29, .09); }
.calculation-result { display: flex; margin-top: 30px; padding-top: 22px; flex-direction: column; border-top: 1px solid var(--line); }
.calculation-result span, .calculation-result small { color: var(--muted); font-size: 12px; }
.calculation-result strong { margin: 4px 0 3px; font-size: 36px; letter-spacing: -.8px; line-height: 1; }
.calculation-result small { font-weight: 650; }
.calc-note { min-height: 35px; margin: 17px 0 22px; color: var(--muted); font-size: 12px; line-height: 1.45; }

.numbers { display: grid; margin: 0; padding: 28px 0; grid-template-columns: repeat(4, 1fr); gap: 22px; background: var(--ink); color: #fff; }
.numbers div { display: grid; gap: 7px; }
.numbers strong { color: var(--accent); font-size: 22px; font-weight: 780; }
.numbers span { max-width: 190px; color: #b6c6c0; font-size: 12px; line-height: 1.35; }

.section { padding: 100px 0 0; }
.section-heading { display: flex; margin-bottom: 30px; align-items: flex-end; justify-content: space-between; gap: 24px; }
.section-heading .eyebrow { margin-bottom: 10px; }
.section-heading h2 { margin-bottom: 0; font-size: 38px; letter-spacing: -.8px; line-height: 1.08; }
.round-arrow { display: grid; width: 46px; height: 46px; flex: 0 0 auto; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: var(--surface); color: var(--ink); cursor: pointer; font-size: 20px; }
.round-arrow:hover { border-color: var(--ink); background: var(--ink); color: var(--accent); }
.service-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.service-card { display: grid; min-height: 94px; padding: 20px; grid-template-columns: 46px 1fr auto; align-items: center; gap: 16px; border: 1px solid var(--line); border-radius: 7px; background: var(--surface); color: var(--ink); cursor: pointer; text-align: left; transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease; }
.service-card:hover { border-color: var(--blue); box-shadow: 0 8px 25px rgba(39, 122, 137, .1); transform: translateY(-2px); }
.service-card.service-main { border-color: var(--accent-deep); background: #f4fbe6; }
.service-icon { display: grid; width: 44px; height: 44px; place-items: center; border-radius: 50%; background: var(--surface-soft); color: var(--blue); font-size: 22px; font-weight: 800; }
.service-main .service-icon { background: var(--accent); color: var(--ink); }
.icon-tron { background: #f8e8e7; color: var(--danger); font-size: 17px; }
.icon-transfer { background: #e4f1f3; }
.icon-qr { background: #f6efd9; color: #9a6e1d; }
.icon-phone { background: #e8edf8; color: #536ca8; }
.service-card b, .service-card small { display: block; }
.service-card b { font-size: 15px; line-height: 1.25; }
.service-card small { margin-top: 5px; color: var(--muted); font-size: 12px; line-height: 1.35; }
.service-card > i { color: var(--muted); font-size: 19px; font-style: normal; }

.process-section { padding-bottom: 90px; }
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.process-grid article { min-height: 220px; padding: 24px; border-top: 2px solid var(--ink); background: var(--surface); }
.process-grid article > span { color: var(--blue); font-size: 12px; font-weight: 800; }
.process-grid h3 { margin: 46px 0 10px; font-size: 19px; }
.process-grid p { margin-bottom: 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.security-note { display: flex; margin-top: 36px; padding: 20px 24px; align-items: center; gap: 16px; border: 1px solid var(--line); border-radius: 7px; background: var(--surface-soft); }
.security-mark { display: grid; width: 34px; height: 34px; flex: 0 0 auto; place-items: center; border-radius: 50%; background: var(--accent); font-weight: 800; }
.security-note b { font-size: 14px; }
.security-note p { margin: 4px 0 0; color: var(--muted); font-size: 12px; line-height: 1.45; }

.faq-section { padding-bottom: 100px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; min-height: 68px; padding: 18px 0; align-items: center; justify-content: space-between; cursor: pointer; font-size: 15px; font-weight: 720; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; color: var(--blue); font-size: 22px; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list p { max-width: 720px; margin: -4px 40px 20px 0; color: var(--muted); font-size: 13px; line-height: 1.55; }

.site-footer { display: grid; width: min(1180px, calc(100% - 48px)); margin: 0 auto; padding: 30px 0 36px; grid-template-columns: 1fr auto; align-items: center; gap: 24px; border-top: 1px solid var(--line); }
.footer-brand .brand-mark { width: 31px; height: 31px; font-size: 16px; }
.footer-brand div { display: grid; gap: 3px; }
.footer-brand b { font-size: 14px; }
.footer-brand small { color: var(--muted); font-size: 11px; }
.footer-links { display: flex; gap: 22px; }
.footer-legal { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: 11px; }

@media (max-width: 860px) {
  .site-header, main, .site-footer { width: min(100% - 32px, 680px); }
  .site-nav { display: none; }
  .workspace { grid-template-columns: 1fr; gap: 46px; padding-top: 56px; }
  .intro { max-width: 620px; }
  h1 { font-size: clamp(46px, 12vw, 64px); }
  .numbers { margin-inline: -16px; padding-inline: 16px; grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .site-header { min-height: 68px; }
  .brand-mark { width: 34px; height: 34px; font-size: 18px; }
  .brand-name { font-size: 16px; }
  .header-action { min-height: 38px; padding-inline: 11px; font-size: 12px; }
  .workspace { padding: 42px 0 50px; }
  h1 { margin-bottom: 20px; font-size: 47px; }
  .intro-text { font-size: 16px; }
  .intro-actions { align-items: flex-start; flex-direction: column; gap: 18px; }
  .trust-row { margin-top: 34px; flex-direction: column; gap: 12px; }
  .calculator { padding: 21px; }
  .calculator-head h2 { font-size: 25px; }
  .calculation-result strong { font-size: 32px; }
  .numbers { gap: 20px 12px; }
  .numbers strong { font-size: 19px; }
  .section { padding-top: 68px; }
  .section-heading h2 { font-size: 30px; }
  .service-grid, .process-grid { grid-template-columns: 1fr; }
  .process-grid article { min-height: 175px; }
  .process-grid h3 { margin-top: 32px; }
  .security-note { align-items: flex-start; padding: 18px; }
  .site-footer { grid-template-columns: 1fr; }
  .footer-links { gap: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button, .service-card { transition: none; }
}