:root {
  --bg: #eef0f3; --surface: #fff; --hover: #f3f4f7; --ink: #1f2230; --sub: #6b6f7c; --faint: #a2a6b2; --line: #e5e6eb;
  --accent: #6b62f0; --accent-strong: #5a50e6; --accent-soft: #efeefe;
  --shadow-card: 0 1px 2px rgba(20,22,40,.04), 0 8px 24px rgba(20,22,40,.06);
  --radius-card: 20px; --radius-panel: 24px; --radius-ctl: 10px;
  --font: 'Helvetica Neue', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft Yahei', sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 32px; }
body { margin: 0; font-family: var(--font); background: var(--bg); color: var(--ink); font-size: 15px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-strong); }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; border-radius: 4px; }
::selection { background: var(--accent-soft); }
.wrap { max-width: 1328px; margin: auto; padding: 0 48px; }
.skip-link { position: fixed; left: 16px; top: -100px; padding: 10px 20px; background: var(--surface); z-index: 10; }
.skip-link:focus { top: 16px; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 112px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 20px; font-weight: 650; letter-spacing: -.6px; color: var(--ink); white-space: nowrap; }
.brand-mark { width: 34px; height: 34px; flex-shrink: 0; display: block; }
.top nav { display: flex; align-items: center; gap: 28px; font-size: 13px; }
.top nav > a { color: var(--sub); }
.top nav > a:hover, .top nav > a[aria-current=page] { color: var(--ink); }
.language-switch { display: flex; gap: 12px; align-items: center; border-left: 1px solid var(--line); padding-left: 24px; font-size: 12px; }
.language-switch a { color: var(--sub); white-space: nowrap; }
.language-switch a[aria-current=true] { color: var(--ink); text-decoration: underline; text-underline-offset: 5px; text-decoration-color: var(--accent); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 22px; padding: 14px 22px; min-height: 48px; font-size: 14px; font-weight: 550; line-height: 1.3; white-space: nowrap; border-radius: var(--radius-ctl); transition: background .16s, transform .16s; }
.btn:hover { transform: translateY(-2px); }
.btn.primary { background: var(--accent); color: var(--surface); }
.btn.primary:hover { background: var(--accent-strong); }
.btn.nav-login { background: var(--surface); color: var(--ink); min-height: 42px; padding: 11px 18px; border: 1px solid var(--line); }
.eyebrow { display: flex; align-items: center; gap: 9px; margin: 0 0 24px; font-size: 10px; font-weight: 650; letter-spacing: .16em; color: var(--sub); }
.status-dot { display: inline-block; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
.hero { position: relative; min-height: 610px; display: flex; align-items: center; isolation: isolate; }
.hero-copy { width: 54%; position: relative; z-index: 1; padding: 58px 0 80px; }
.hero h1, .pricing-intro h1 { font-size: clamp(44px, 5.2vw, 72px); font-weight: 500; line-height: 1.08; letter-spacing: -.055em; margin: 0; }
.hero h1 span, .pricing-intro h1 span { color: var(--accent); }
.hero-description { max-width: 385px; margin: 26px 0 32px; color: var(--sub); font-size: 17px; line-height: 1.65; }
.actions { display: flex; align-items: center; gap: 24px; }
.text-link { display: inline-flex; align-items: center; gap: 16px; font-size: 13px; color: var(--ink); font-weight: 500; white-space: nowrap; }
.text-link:hover { color: var(--accent); }
.availability { display: flex; align-items: center; gap: 7px; font-size: 11px; color: var(--sub); margin: 18px 0 0; }
.hero-visual { position: absolute; right: -48px; top: 0; bottom: 0; width: 72%; overflow: hidden; z-index: 0;
  mask-image: linear-gradient(to right, transparent 0%, black 26%), linear-gradient(to bottom, transparent 0%, black 12%, black 87%, transparent 100%); mask-composite: intersect; }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; object-position: right center; }
.section { padding: 70px 0; border-top: 1px solid var(--line); }
.section-heading { margin-bottom: 38px; }
.section-heading .eyebrow { margin-bottom: 14px; }
h2 { font-size: 36px; font-weight: 500; line-height: 1.2; letter-spacing: -.04em; margin: 0; }
.horizontal { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; }
.workflow-steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.workflow-steps li + li { border-left: 1px solid var(--line); padding-left: 40px; }
.step-top { display: flex; align-items: center; justify-content: space-between; padding-right: 16px; margin-bottom: 38px; }
.step-number { font-size: 12px; color: var(--sub); font-variant-numeric: tabular-nums; }
.step-top svg { width: 42px; height: 42px; color: var(--accent); stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
h3 { margin: 0 0 10px; font-size: 20px; font-weight: 550; letter-spacing: -.025em; }
.workflow-steps p, .billing-details p { color: var(--sub); font-size: 14px; margin: 0; }
.packs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.pack { min-width: 0; background: var(--surface); padding: 32px 28px 24px; border: 1px solid var(--line); border-radius: var(--radius-card); }
.pack-amount { font-size: 33px; font-weight: 500; line-height: 1.2; letter-spacing: -.035em; font-variant-numeric: tabular-nums; }
.pack-amount span { display: block; color: var(--sub); font-size: 13px; font-weight: 400; margin-top: 8px; letter-spacing: 0; }
.pack-divider { height: 1px; background: var(--line); margin: 30px 0; }
.pack-price { display: flex; align-items: baseline; gap: 8px; font-size: 42px; font-weight: 500; letter-spacing: -.05em; line-height: 1.2; font-variant-numeric: tabular-nums; }
.pack-price > span { font-size: 11px; color: var(--sub); letter-spacing: .03em; font-weight: 400; white-space: nowrap; }
.pack-frequency { color: var(--sub); font-size: 12px; margin: 8px 0 30px; }
.pack-output { border-top: 1px solid var(--line); margin: 0 0 28px; padding-top: 20px; }
.pack-output > p { font-size: 10px; color: var(--sub); margin: 0 0 18px; }
.pack-output ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 17px; }
.pack-output li { display: flex; flex-direction: column; gap: 3px; }
.pack-output li > span { font-size: 11px; color: var(--sub); }
.pack-output strong { font-size: 14px; font-weight: 550; font-variant-numeric: tabular-nums; }
.output-assumptions { color: var(--sub); font-size: 12px; line-height: 1.7; max-width: 900px; margin: 24px 0 0; }
.pack-button { width: 100%; padding: 13px 12px; gap: 12px; background: var(--accent-soft); color: var(--accent-strong); font-size: 12px; }
.pack-button:hover { background: var(--accent); color: var(--surface); }
.compact-pack { color: var(--ink); padding: 26px; transition: border-color .16s, transform .16s; }
.compact-pack:hover { color: var(--ink); border-color: var(--accent); transform: translateY(-3px); }
.compact-pack .pack-amount { font-size: 14px; letter-spacing: 0; font-weight: 500; }
.compact-pack .pack-amount span { display: inline; font-size: 12px; }
.compact-pack .pack-price { margin-top: 26px; font-size: 32px; }
.pack-price .pack-arrow { margin-left: auto; font-size: 20px; color: var(--accent); }
.price-caption { display: flex; justify-content: space-between; color: var(--sub); font-size: 11px; margin-top: 20px; gap: 16px; }
.closing { display: flex; align-items: center; justify-content: space-between; padding: 50px 40px; margin: 12px 0 70px; background: var(--accent-soft); border-radius: var(--radius-panel); gap: 30px; }
.closing h2 { font-size: 29px; }
.bottom { border-top: 1px solid var(--line); padding: 40px 0 24px; color: var(--sub); font-size: 12px; }
.footer-top { display: flex; justify-content: space-between; gap: 40px; }
.footer-brand { font-size: 16px; }
.footer-top p { font-size: 12px; margin: 8px 0 0; }
.bottom .links { display: flex; flex-wrap: wrap; justify-content: flex-end; align-content: flex-start; max-width: 560px; gap: 14px 24px; }
.bottom .links a { color: var(--sub); }
.bottom .links a:hover { color: var(--accent); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); margin-top: 32px; padding-top: 20px; font-size: 10px; }
.pricing-intro { text-align: center; padding: 58px 0 52px; }
.pricing-intro .eyebrow { justify-content: center; }
.pricing-intro h1 { font-size: clamp(40px, 4.6vw, 64px); }
.pricing-intro > p:last-child { color: var(--sub); font-size: 16px; margin: 24px 0 0; }
.pricing-packs { margin: 0 auto 68px; }
.billing { padding: 48px 0 36px; }
.billing h2 { font-size: 28px; }
.billing-details { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.benefit-mark { color: var(--accent); font-size: 22px; display: block; margin-bottom: 14px; }
.billing-details h3 { font-size: 16px; }
.billing-details p { font-size: 13px; max-width: 280px; }
.billing-fineprint { border-top: 1px solid var(--line); margin-top: 36px; padding-top: 24px; display: flex; align-items: flex-start; justify-content: space-between; gap: 40px; }
.billing-fineprint p { color: var(--sub); font-size: 12px; max-width: 710px; margin: 0; }
.billing-fineprint .text-link { font-size: 12px; }
.payment-strip { display: flex; justify-content: space-between; gap: 24px; font-size: 11px; color: var(--sub); margin-bottom: 56px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-panel); padding: 48px; }
.doc { max-width: 860px; margin: 32px auto 80px; }
.doc h1 { margin: 0 0 12px; font-size: 36px; line-height: 1.2; font-weight: 500; letter-spacing: -.035em; }
.doc h2 { font-size: 19px; letter-spacing: -.015em; margin: 32px 0 10px; }
.doc h3 { font-size: 16px; margin: 24px 0 8px; }
.doc .meta { color: var(--sub); font-size: 12px; margin-bottom: 28px; }
.doc p, .doc li { font-size: 14px; }
.doc ul { padding-left: 22px; }
.doc li { margin: 8px 0; }
.doc .lang { color: var(--sub); font-size: 12px; }
dl.contact { display: grid; grid-template-columns: max-content 1fr; gap: 18px 40px; margin: 36px 0; }
dl.contact dt { color: var(--sub); font-size: 13px; }
dl.contact dd { margin: 0; overflow-wrap: anywhere; }
.note { color: var(--sub); font-size: 12px; }
html[lang=zh-CN] .hero h1 { font-size: clamp(40px, 4.6vw, 62px); letter-spacing: -.04em; line-height: 1.25; }
html[lang=zh-CN] .pricing-intro h1 { font-size: clamp(36px, 4.2vw, 56px); line-height: 1.3; }
@media (min-width: 1500px) { .hero-visual { right: -80px; width: 76%; } }
@media (max-width: 1050px) {
  .wrap { padding: 0 32px; } .top { min-height: 96px; } .top nav { gap: 20px; } .brand { font-size: 18px; }
  .hero { min-height: 530px; } .hero-visual { right: -32px; width: 70%; } .hero-copy { width: 58%; }
  .hero-description { max-width: 300px; font-size: 15px; } .actions { gap: 18px; } .actions .text-link { font-size: 12px; }
  .pack { padding: 26px 18px 20px; } .pack-amount { font-size: 29px; } .pack-price { font-size: 36px; }
  .workflow-steps { gap: 28px; } .workflow-steps li + li { padding-left: 28px; }
}
@media (max-width: 760px) {
  .wrap { padding: 0 24px; } .top { position: relative; flex-wrap: wrap; gap: 20px; padding: 22px 0; min-height: auto; }
  .top nav { width: 100%; justify-content: flex-start; gap: 24px; } .language-switch { padding-left: 12px; gap: 10px; margin-left: auto; }
  .top nav > a { font-size: 12px; } .btn.nav-login { position: absolute; right: 0; top: 18px; gap: 12px; font-size: 12px; min-height: 36px; padding: 8px 12px; }
  .hero { min-height: auto; display: block; } .hero-copy { width: 100%; padding: 38px 0 0; }
  .hero h1 { font-size: clamp(42px, 8vw, 60px); } .hero-description { max-width: 380px; font-size: 15px; margin: 22px 0 24px; }
  .eyebrow { font-size: 9px; margin-bottom: 20px; } .hero-visual { position: relative; top: auto; right: auto; width: calc(100% + 48px); height: 360px; margin: -8px -24px -16px; z-index: -1;
    mask-image: linear-gradient(to bottom, transparent 0%, black 17%, black 83%, transparent 100%); }
  .hero-visual img { object-position: right center; } .section { padding: 44px 0; } h2 { font-size: 28px; }
  .actions { flex-wrap: wrap; gap: 16px; } .actions .btn { flex-shrink: 0; white-space: nowrap; padding: 14px 18px; font-size: 13px; }
  .section-heading { margin-bottom: 28px; } .workflow-steps { gap: 24px; grid-template-columns: 1fr; }
  .workflow-steps li { position: relative; padding: 0 0 24px 64px; border-bottom: 1px solid var(--line); }
  .workflow-steps li + li { border-left: 0; padding-left: 64px; } .workflow-steps li:last-child { border-bottom: 0; padding-bottom: 0; }
  .step-top { position: absolute; left: 0; top: 0; margin: 0; padding: 0; } .step-top svg { display: none; }
  .step-number { font-size: 20px; color: var(--accent); } h3 { font-size: 18px; }
  .workflow-steps p { font-size: 13px; } .horizontal { align-items: flex-start; flex-direction: column; gap: 18px; }
  .packs { grid-template-columns: repeat(2, 1fr); gap: 12px; } .pack { padding: 24px 18px 18px; }
  .pack-amount { font-size: 27px; } .pack-amount span { font-size: 12px; } .pack-divider { margin: 24px 0; }
  .pack-price { font-size: 36px; } .pack-frequency { margin-bottom: 22px; } .pack-button { gap: 8px; font-size: 11px; min-height: 44px; padding: 12px 8px; }
  .compact-pack .pack-amount { font-size: 13px; } .compact-pack .pack-price { font-size: 28px; margin-top: 20px; }
  html[lang=zh-CN] .compact-pack .pack-arrow { display: none; }
  .price-caption { font-size: 10px; flex-wrap: wrap; gap: 8px; } .closing { flex-direction: column; align-items: flex-start; padding: 30px 26px; gap: 24px; margin-bottom: 44px; }
  .closing h2 { font-size: 25px; } .footer-top { flex-direction: column; gap: 24px; } .bottom .links { justify-content: flex-start; gap: 12px 20px; }
  .footer-bottom { font-size: 10px; flex-wrap: wrap; } .pricing-intro { padding: 40px 0 36px; } .pricing-intro h1 { font-size: 44px; }
  .pricing-intro > p:last-child { font-size: 14px; } .pricing-packs { margin-bottom: 40px; }
  .billing-details { grid-template-columns: 1fr; gap: 24px; } .billing-details > div { padding-left: 40px; position: relative; }
  .benefit-mark { position: absolute; left: 0; top: -5px; } .billing-details p { max-width: none; } .billing h2 { font-size: 24px; }
  .billing-fineprint { flex-direction: column; gap: 16px; margin-top: 28px; } .payment-strip { flex-direction: column; gap: 8px; margin-bottom: 36px; }
  .card { padding: 28px 24px; } .doc { margin: 24px auto 44px; } .doc h1 { font-size: 28px; } dl.contact { gap: 16px 22px; }
}
@media (max-width: 380px) { .wrap { padding: 0 18px; } .language-switch { border: 0; padding-left: 0; } .top nav { gap: 18px; } .pack { padding: 20px 14px 16px; } .pack-price { font-size: 32px; gap: 5px; } .pack-price > span { font-size: 10px; } .compact-pack .pack-price { font-size: 26px; } .hero h1 { font-size: 39px; } .hero-visual { width: calc(100% + 36px); margin-left: -18px; margin-right: -18px; } }
@media (min-width: 761px) and (max-width: 900px) { .hero-copy { width: 62%; } .hero-visual { width: 60%; mask-image: linear-gradient(to right, transparent 0%, black 50%), linear-gradient(to bottom, transparent, black 12%, black 87%, transparent); } .hero-description { max-width: 265px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .btn, .compact-pack { transition: none; } .btn:hover, .compact-pack:hover { transform: none; } }