:root {
  --ink: #112b29;
  --muted: #5d706d;
  --brand: #087f6f;
  --brand-dark: #075f55;
  --mint: #dff5ee;
  --cream: #f8f7f2;
  --white: #fff;
  --line: #dce5e1;
  --shadow: 0 24px 70px rgba(22, 68, 60, .14);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif; line-height: 1.65; }
a { color: inherit; }
.shell { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: fixed; left: 12px; top: -60px; z-index: 100; padding: 10px 16px; background: var(--ink); color: #fff; border-radius: 8px; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.92); border-bottom: 1px solid rgba(220,229,225,.85); backdrop-filter: blur(12px); }
.nav-wrap { height: 72px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 800; text-decoration: none; white-space: nowrap; }
.brand-mark { width: 36px; height: 36px; display: grid; place-items: center; color: #fff; background: var(--brand); border-radius: 11px 11px 11px 3px; }
.nav-links { margin-left: auto; display: flex; gap: 28px; }
.nav-links a { color: var(--muted); font-size: 14px; font-weight: 700; text-decoration: none; }
.nav-links a:hover { color: var(--brand); }
.language-switch { display: flex; padding: 3px; background: #edf3f1; border-radius: 999px; }
.language-switch button { border: 0; padding: 7px 11px; color: var(--muted); background: transparent; border-radius: 999px; cursor: pointer; }
.language-switch button[aria-pressed="true"] { color: var(--brand-dark); background: #fff; box-shadow: 0 2px 10px rgba(17,43,41,.1); }
.hero { overflow: hidden; padding: 98px 0 92px; background: radial-gradient(circle at 82% 8%, #b7eadc 0, transparent 30%), linear-gradient(145deg, #f8fbf8, #f3f8f5); }
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 72px; }
.eyebrow { margin: 0 0 14px; color: var(--brand); font-size: 13px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
h1 { margin: 0; max-width: 720px; font-size: clamp(44px, 5.6vw, 72px); line-height: 1.08; letter-spacing: -.055em; }
.hero-lead { max-width: 640px; margin: 26px 0 30px; color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0 22px; border: 1px solid transparent; border-radius: 12px; font-size: 15px; font-weight: 800; text-decoration: none; cursor: pointer; }
.button.primary { color: #fff; background: var(--brand); box-shadow: 0 12px 28px rgba(8,127,111,.22); }
.button.primary:hover { background: var(--brand-dark); transform: translateY(-1px); }
.button.secondary { border-color: var(--line); background: rgba(255,255,255,.7); }
.button.full { width: 100%; }
.button:disabled { cursor: not-allowed; opacity: .68; box-shadow: none; }
.microcopy, .fineprint { color: var(--muted); font-size: 13px; }
.microcopy { margin: 14px 0 0; }
.hero-card { padding: 0 28px 30px; border: 1px solid rgba(255,255,255,.9); background: rgba(255,255,255,.9); border-radius: 24px; box-shadow: var(--shadow); transform: rotate(1.2deg); }
.window-bar { height: 52px; display: flex; align-items: center; gap: 7px; border-bottom: 1px solid var(--line); }
.window-bar span { width: 9px; height: 9px; background: #d6e1dd; border-radius: 50%; }
.file-row { display: flex; align-items: center; gap: 14px; padding: 28px 0 22px; }
.file-row div:last-child { display: grid; }
.file-row small { color: var(--muted); }
.file-icon { width: 46px; height: 50px; display: grid; place-items: center; color: #fff; background: #168f50; border-radius: 8px; font-weight: 900; }
.progress-track { height: 9px; overflow: hidden; background: #e7eeeb; border-radius: 999px; }
.progress-track span { display: block; width: 100%; height: 100%; background: linear-gradient(90deg, var(--brand), #31b895); border-radius: inherit; }
.result-row { display: grid; grid-template-columns: 1fr auto 1fr; align-items: end; gap: 18px; padding: 26px 0 20px; }
.result-row div { display: grid; }
.result-row small { color: var(--muted); }
.result-row strong { font-size: 23px; }
.arrow { color: var(--brand); font-size: 24px; }
.success { margin: 0; padding: 11px 14px; color: var(--brand-dark); background: var(--mint); border-radius: 10px; font-size: 13px; font-weight: 700; text-align: center; }
.trust-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-grid div { display: grid; padding: 25px 30px; border-right: 1px solid var(--line); }
.trust-grid div:first-child { padding-left: 0; }
.trust-grid div:last-child { border-right: 0; }
.trust-grid strong { font-size: 15px; }
.trust-grid span { color: var(--muted); font-size: 13px; }
.section { padding: 100px 0; }
.section.soft { background: var(--cream); }
.section-heading { max-width: 760px; margin-bottom: 46px; }
.section-heading.compact { max-width: 670px; }
h2 { margin: 0 0 16px; font-size: clamp(34px, 4.4vw, 52px); line-height: 1.16; letter-spacing: -.04em; }
.section-heading > p:last-child { color: var(--muted); font-size: 17px; }
.feature-grid, .result-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-grid article { padding: 34px; border: 1px solid var(--line); border-radius: 18px; }
.feature-grid article > span { color: var(--brand); font-size: 13px; font-weight: 900; }
h3 { margin: 14px 0 9px; font-size: 19px; }
.feature-grid p, .steps p { margin: 0; color: var(--muted); }
.result-card { padding: 30px; background: #fff; border-radius: 18px; box-shadow: 0 12px 40px rgba(31,64,57,.07); }
.result-card p { margin: 0 0 11px; color: var(--muted); }
.result-card strong { display: block; font-size: 25px; letter-spacing: -.025em; }
.result-card span { color: var(--brand); font-size: 13px; font-weight: 800; }
.fineprint { margin: 22px 0 0; }
.steps { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; padding: 0; list-style: none; }
.steps li { display: flex; gap: 18px; padding: 26px 0; border-top: 1px solid var(--line); }
.steps li > span { flex: 0 0 34px; height: 34px; display: grid; place-items: center; color: #fff; background: var(--brand); border-radius: 50%; font-weight: 800; }
.steps h3 { margin: 1px 0 6px; }
.pricing-section { background: #0c2d2a; color: #fff; }
.pricing-grid { display: grid; grid-template-columns: 1fr 420px; align-items: center; gap: 90px; }
.pricing-section .section-heading > p:last-child { color: #b8cbc7; }
.price-card { padding: 38px; color: var(--ink); background: #fff; border-radius: 24px; box-shadow: var(--shadow); }
.price-badge { display: inline-block; padding: 6px 10px; color: var(--brand-dark); background: var(--mint); border-radius: 999px; font-size: 12px; font-weight: 800; }
.price { display: flex; align-items: flex-start; margin: 17px 0 0; }
.price small { margin-top: 12px; font-size: 22px; }
.price strong { font-size: 68px; line-height: 1; letter-spacing: -.06em; }
.price-card > p { margin: 9px 0 22px; color: var(--muted); }
.price-card ul { display: grid; gap: 11px; margin: 0 0 28px; padding: 0; list-style: none; }
.price-card li::before { content: "✓"; margin-right: 9px; color: var(--brand); font-weight: 900; }
.narrow { width: min(820px, calc(100% - 40px)); }
details { border-top: 1px solid var(--line); }
details:last-child { border-bottom: 1px solid var(--line); }
summary { padding: 21px 2px; font-weight: 800; cursor: pointer; }
details p { margin: -7px 0 22px; color: var(--muted); }
footer { padding: 42px 0; background: #071d1b; color: #fff; }
.footer-grid { display: flex; justify-content: space-between; gap: 30px; }
.footer-grid p, .footer-grid span, .footer-grid small { color: #9eb4b0; }
.footer-grid p { margin: 5px 0 0; }
.footer-grid div:last-child { display: grid; justify-items: end; gap: 6px; text-align: right; }
.footer-links { display: flex; gap: 18px; }
.footer-links a { color: #d7e6e2; font-size: 14px; font-weight: 700; text-decoration: none; }
.page-hero { padding: 74px 0 58px; background: linear-gradient(145deg, #f8fbf8, #eef7f3); border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: clamp(38px, 5vw, 58px); }
.page-hero p:last-child { max-width: 700px; color: var(--muted); font-size: 17px; }
.page-main { padding: 70px 0 100px; }
.page-grid { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 56px; }
.page-nav { position: sticky; top: 100px; align-self: start; display: grid; gap: 8px; }
.page-nav a { padding: 9px 12px; color: var(--muted); border-radius: 8px; font-size: 14px; font-weight: 700; text-decoration: none; }
.page-nav a:hover { color: var(--brand-dark); background: var(--mint); }
.content-stack { display: grid; gap: 22px; }
.content-card { padding: 32px; border: 1px solid var(--line); border-radius: 18px; }
.content-card h2 { margin-bottom: 12px; font-size: 28px; letter-spacing: -.025em; }
.content-card h3 { margin-top: 24px; }
.content-card p, .content-card li { color: var(--muted); }
.content-card ol, .content-card ul { margin: 12px 0 0; padding-left: 22px; }
.content-card .notice { padding: 13px 15px; color: #755500; background: #fff4ce; border-radius: 10px; }
.doc-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.doc-links a { padding: 8px 11px; color: var(--brand-dark); background: var(--mint); border-radius: 8px; font-size: 13px; font-weight: 800; text-decoration: none; }
.payment-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin: 24px 0 30px; }
.payment-card { margin: 0; padding: 16px; background: var(--cream); border: 1px solid var(--line); border-radius: 16px; }
.payment-card img { display: block; width: 100%; max-height: 520px; object-fit: contain; background: #fff; border-radius: 10px; }
.payment-card figcaption { display: grid; gap: 3px; padding: 12px 4px 2px; }
.payment-card figcaption strong { font-size: 17px; }
.payment-card figcaption span { color: var(--muted); font-size: 13px; }
[data-lang-panel] { display: none; }
html[data-language="zh-CN"] [data-lang-panel="zh-CN"], html[data-language="zh-TW"] [data-lang-panel="zh-TW"] { display: block; }
@media (max-width: 860px) {
  .nav-links { display: none; }
  .language-switch { margin-left: auto; }
  .hero { padding: 70px 0; }
  .hero-grid, .pricing-grid { grid-template-columns: 1fr; gap: 46px; }
  .hero-card { max-width: 560px; transform: none; }
  .trust-grid { grid-template-columns: repeat(2,1fr); }
  .trust-grid div { padding: 20px; border-bottom: 1px solid var(--line); }
  .trust-grid div:first-child { padding-left: 20px; }
  .feature-grid, .result-grid, .steps { grid-template-columns: 1fr; }
  .section { padding: 76px 0; }
  .pricing-grid { align-items: start; }
}
@media (max-width: 540px) {
  .shell, .narrow { width: min(100% - 28px, 1120px); }
  .nav-wrap { height: 64px; }
  .brand { font-size: 16px; }
  .brand-mark { width: 32px; height: 32px; }
  .language-switch button { padding: 6px 8px; font-size: 12px; }
  h1 { font-size: 42px; }
  .hero-lead { font-size: 16px; }
  .hero-actions, .hero-actions .button { width: 100%; }
  .hero-card { padding: 0 19px 22px; }
  .result-row { gap: 8px; }
  .result-row strong { font-size: 18px; }
  .trust-grid { grid-template-columns: 1fr 1fr; }
  .trust-grid div { padding: 16px 10px; }
  .trust-grid div:first-child { padding-left: 10px; }
  .feature-grid article, .result-card { padding: 24px; }
  .price-card { padding: 28px 24px; }
  .footer-grid { display: grid; }
  .footer-grid div:last-child { justify-items: start; text-align: left; }
  .page-grid { grid-template-columns: 1fr; gap: 28px; }
  .page-nav { position: static; display: flex; flex-wrap: wrap; }
  .payment-grid { grid-template-columns: 1fr; }
}