:root {
  color-scheme: light;
  --ink: #171716;
  --muted: #696965;
  --soft: #f6f6f3;
  --line: #e9e8e3;
  --gold: #c59120;
  --gold-light: #f3bf42;
  --page-width: 1240px;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

* { box-sizing: border-box; }
body { margin: 0; background: #fff; color: var(--ink); }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.section-shell { width: min(var(--page-width), calc(100% - 96px)); margin-inline: auto; }

.site-header {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between;
  width: 100%; height: 78px; padding: 0 max(48px, calc((100vw - var(--page-width)) / 2));
  border-bottom: 1px solid rgba(23, 23, 22, .08); background: rgba(255, 255, 255, .94); backdrop-filter: blur(14px);
}
.brand { display: inline-flex; align-items: center; gap: 13px; min-width: 186px; font-size: 15px; font-weight: 700; letter-spacing: .04em; }
.brand img { width: 72px; height: 34px; object-fit: contain; }
.main-nav { display: flex; align-items: center; gap: clamp(24px, 3.1vw, 48px); color: #5d5d58; font-size: 14px; }
.main-nav a { transition: color .2s ease; }
.main-nav a:hover, .closing-link:hover { color: var(--gold); }
.header-controls { display: flex; align-items: center; gap: 22px; }
.primary-link .arrow, .closing-link .arrow { color: var(--gold); font-size: 18px; }
.language-switch { display: inline-flex; align-items: center; gap: 8px; color: #aaa8a1; font-size: 12px; }
.language-option { padding: 5px 0; border: 0; border-bottom: 1px solid transparent; background: transparent; color: #77766f; cursor: pointer; font: inherit; }
.language-option.is-active { border-bottom-color: var(--gold); color: var(--ink); font-weight: 700; }
.language-option:focus-visible, a:focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; }

.hero { position: relative; display: grid; grid-template-columns: 1.03fr .97fr; min-height: 660px; align-items: center; padding-top: 46px; padding-bottom: 52px; }
.hero-copy { position: relative; z-index: 2; padding: 15px 0 30px; }
.eyebrow { display: flex; align-items: center; gap: 11px; margin: 0 0 28px; color: #6e6d68; font-size: 11px; font-weight: 700; letter-spacing: .19em; }
.eyebrow-rule { display: inline-block; width: 24px; height: 2px; background: var(--gold-light); }
h1, h2, h3, p { margin-top: 0; }
.hero h1 { max-width: 630px; margin-bottom: 23px; font-size: clamp(46px, 5.7vw, 76px); font-weight: 700; line-height: 1.23; letter-spacing: -.055em; }
.hero h1 > span, .section-heading h2 > span, .benefits-intro h2 > span, .merchant-copy h2 > span, .closing-copy h2 > span { display: block; }
.hero h1 .gold-line { color: var(--gold); }
.hero-intro { max-width: 490px; margin-bottom: 31px; color: var(--muted); font-size: 17px; line-height: 1.95; }
.primary-link { display: inline-flex; align-items: center; gap: 25px; padding: 15px 20px; border: 1px solid var(--ink); font-size: 14px; font-weight: 700; transition: background .2s ease, color .2s ease, transform .2s ease; }
.primary-link:hover { transform: translateY(-2px); background: var(--ink); color: #fff; }
.hero-note { display: flex; align-items: center; gap: 12px; margin-top: 58px; color: #74746f; font-size: 12px; letter-spacing: .06em; }
.note-mark { display: grid; width: 28px; height: 28px; place-items: center; border: 1px solid #d5ae53; color: var(--gold); font-weight: 700; }
.hero-visual { position: relative; min-height: 520px; padding: 10px; }
.hero-visual picture { display: block; height: 100%; }
.hero-photo { width: 100%; height: 520px; object-fit: cover; object-position: 70% center; }
.visual-caption { position: absolute; right: 24px; bottom: 28px; display: grid; gap: 8px; min-width: 220px; padding: 17px 19px; border-left: 2px solid var(--gold-light); background: #fff; box-shadow: 0 12px 40px rgba(29, 27, 18, .08); }
.visual-caption span { color: #898780; font-size: 10px; letter-spacing: .16em; }
.visual-caption b { font-size: 14px; }

.model-section { display: grid; grid-template-columns: .8fr 1.2fr; gap: 8%; padding-top: 112px; padding-bottom: 128px; border-top: 1px solid var(--line); }
.section-heading h2, .benefits-intro h2, .closing-copy h2 { margin-bottom: 18px; font-size: clamp(34px, 4vw, 49px); font-weight: 650; line-height: 1.35; letter-spacing: -.045em; }
.section-heading > p:last-child, .benefits-intro > p:last-child { max-width: 420px; margin-bottom: 0; color: var(--muted); font-size: 15px; line-height: 1.9; }
.steps { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 36px; row-gap: 0; align-content: start; }
.step { position: relative; min-height: 155px; padding: 5px 0 27px; border-bottom: 1px solid var(--line); }
.step:nth-child(n+3) { padding-top: 27px; }
.step-number { display: block; margin-bottom: 18px; color: var(--gold); font-size: 12px; font-weight: 700; letter-spacing: .16em; }
.step h3 { margin-bottom: 9px; font-size: 18px; font-weight: 650; }
.step p { max-width: 260px; margin-bottom: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

.benefits-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: 10%; padding-top: 104px; padding-bottom: 116px; background: var(--soft); }
.benefits-intro { padding-left: 34px; }
.benefits-intro .eyebrow { margin-bottom: 25px; }
.benefit-list { padding: 0 34px 0 0; }
.benefit-row { display: grid; grid-template-columns: 36px 1fr 24px; align-items: start; gap: 19px; padding: 23px 0; border-bottom: 1px solid #dfded8; }
.benefit-row:first-child { padding-top: 0; }
.benefit-index { padding-top: 3px; color: var(--gold); font-size: 12px; font-weight: 700; letter-spacing: .12em; }
.benefit-row h3 { margin-bottom: 7px; font-size: 17px; font-weight: 650; }
.benefit-row p { max-width: 470px; margin-bottom: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.benefit-arrow { color: #b5b3ad; font-size: 17px; }

.merchant-section { display: grid; grid-template-columns: .9fr 1.1fr .75fr; align-items: center; gap: 5%; padding: 91px 34px; border-bottom: 1px solid var(--line); }
.merchant-visual { height: 270px; overflow: hidden; background: var(--soft); }
.merchant-visual picture, .closing-visual picture { display: block; width: 100%; height: 100%; }
.merchant-visual img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.merchant-copy .eyebrow { margin-bottom: 20px; }
.merchant-copy h2 { margin-bottom: 13px; font-size: clamp(32px, 3.6vw, 43px); font-weight: 650; line-height: 1.38; letter-spacing: -.045em; }
.merchant-copy > p:last-child { max-width: 450px; margin-bottom: 0; color: var(--muted); font-size: 14px; line-height: 1.9; }
.merchant-statement { display: flex; align-items: start; gap: 15px; }
.statement-line { flex: 0 0 22px; height: 2px; margin-top: 10px; background: var(--gold-light); }
.merchant-statement p { margin-bottom: 0; color: #595954; font-size: 15px; line-height: 1.9; }

.closing-section { position: relative; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 0 8%; min-height: 320px; padding-top: 62px; padding-bottom: 62px; }
.closing-copy { grid-column: 1; grid-row: 1; }
.closing-visual { grid-column: 2; grid-row: 1 / span 2; height: 300px; overflow: hidden; background: var(--soft); }
.closing-visual img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.closing-copy .eyebrow { margin-bottom: 16px; }
.closing-copy h2 { margin-bottom: 11px; font-size: clamp(31px, 3.4vw, 42px); }
.closing-copy > p:last-child { margin-bottom: 0; color: var(--muted); font-size: 14px; }
.closing-link { grid-column: 1; grid-row: 2; display: inline-flex; align-items: center; justify-self: start; gap: 14px; margin-top: 20px; font-size: 13px; font-weight: 650; transition: color .2s ease; }
.site-footer { display: flex; align-items: center; justify-content: space-between; min-height: 86px; border-top: 1px solid var(--line); color: #77766f; font-size: 11px; }
.footer-note, .footer-copyright { display: none; }
.footer-brand { display: none; min-width: auto; color: var(--ink); font-size: 13px; }
.footer-brand img { width: 56px; height: 27px; }

@media (min-width: 901px) {
  .main-nav { transform: translateX(56px); }
}

@media (max-width: 900px) {
  .section-shell { width: min(var(--page-width), calc(100% - 48px)); }
  .site-header { height: 70px; padding: 0 24px; }
  .brand { min-width: auto; }
  .main-nav { gap: 15px; font-size: 12px; }
  .header-controls { gap: 13px; }
  .language-switch { gap: 6px; padding-left: 11px; }
  .hero { min-height: 600px; grid-template-columns: 1fr .9fr; }
  .hero-visual { min-height: 460px; }
  .hero-photo { height: 460px; }
  .visual-caption { right: 18px; bottom: 24px; }
  .model-section, .benefits-section { gap: 6%; }
  .merchant-section { grid-template-columns: .8fr 1.2fr; gap: 5%; padding: 68px 0; }
  .merchant-visual { height: 230px; }
  .merchant-statement { grid-column: 2; }
  .benefits-intro { padding-left: 0; }
  .benefit-list { padding-right: 0; }
}

@media (max-width: 650px) {
  :root { scroll-padding-top: 70px; }
  .section-shell { width: calc(100% - 40px); }
  .site-header { position: sticky; height: auto; min-height: 65px; flex-wrap: wrap; padding: 12px 20px 0; }
  .brand { gap: 9px; font-size: 13px; }
  .brand img { width: 61px; height: 28px; }
  .header-controls { margin-left: auto; gap: 0; }
  .language-switch { padding-left: 0; border-left: 0; }
  .language-option { display: inline-grid; width: 44px; min-height: 44px; place-items: center; padding: 0; }
  .main-nav { display: none; }
  .hero { display: flex; min-height: 0; flex-direction: column; align-items: stretch; padding-top: 45px; padding-bottom: 48px; }
  .hero-copy { padding: 0; }
  .eyebrow { margin-bottom: 20px; font-size: 10px; }
  .hero h1 { margin-bottom: 18px; font-size: clamp(40px, 10.8vw, 54px); line-height: 1.18; }
  .hero-intro { max-width: 440px; margin-bottom: 22px; font-size: 15px; line-height: 1.85; }
  .primary-link { padding: 13px 16px; font-size: 13px; }
  .hero-note { margin-top: 29px; }
  .hero-visual { min-height: 295px; height: 295px; margin-top: 17px; padding: 0; }
  .hero-visual picture { height: 100%; }
  .hero-photo { height: 295px; object-position: 68% center; }
  .visual-caption { right: 12px; bottom: 12px; min-width: 159px; padding: 13px 14px; }
  .visual-caption b { font-size: 12px; }
  .model-section { grid-template-columns: 1fr; gap: 36px; padding-top: 66px; padding-bottom: 74px; }
  .section-heading h2, .benefits-intro h2 { font-size: 34px; }
  .section-heading > p:last-child, .benefits-intro > p:last-child { font-size: 14px; }
  .steps { grid-template-columns: 1fr; column-gap: 0; }
  .step { display: grid; grid-template-columns: 32px minmax(0, 1fr); column-gap: 14px; min-height: 0; padding: 17px 0; }
  .step:nth-child(n+3) { padding-top: 17px; }
  .step-number { grid-row: 1 / span 2; margin-bottom: 0; padding-top: 2px; }
  .step h3 { font-size: 16px; }
  .step p { grid-column: 2; max-width: none; font-size: 14px; line-height: 1.7; }
  .benefits-section { grid-template-columns: minmax(0, 1fr); gap: 34px; padding: 69px 18px 73px; }
  .benefits-intro, .benefit-list { min-width: 0; }
  .benefits-intro h2 { font-size: clamp(30px, 8.7vw, 34px); overflow-wrap: break-word; }
  .benefit-row { grid-template-columns: minmax(0, 1fr) 20px; gap: 12px; padding: 19px 0; }
  .benefit-index { display: none; }
  .benefit-row > div { min-width: 0; overflow-wrap: break-word; }
  .benefit-row h3 { font-size: 16px; }
  .benefit-row p { font-size: 14px; }
  .merchant-section { grid-template-columns: 1fr; gap: 20px; padding: 63px 0; }
  .merchant-visual { height: 220px; }
  .merchant-copy h2 { font-size: 32px; }
  .merchant-statement { grid-column: auto; max-width: 320px; }
  .closing-section { grid-template-columns: 1fr auto; min-height: 0; gap: 0 18px; padding-top: 52px; padding-bottom: 53px; }
  .closing-visual { grid-column: 1 / -1; grid-row: 1; width: 100%; height: 190px; margin-bottom: 22px; }
  .closing-copy { grid-column: 1; grid-row: 2; }
  .closing-copy h2 { font-size: 31px; }
  .closing-copy > p:last-child { max-width: 230px; font-size: 13px; line-height: 1.8; }
  .closing-link { grid-column: 2; grid-row: 2; align-self: end; justify-self: end; margin-top: 0; padding-bottom: 4px; font-size: 12px; white-space: nowrap; }
  .site-footer { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}