:root {
  --paper: #f6f3ec;
  --paper-2: #efeade;
  --card: #fffdf8;
  --ink: #2b2620;
  --ink-2: #5c5548;
  --muted: #8d8375;
  --line: #e0d8c7;
  --line-soft: #e9e2d4;
  --cinnabar: #c04f33;
  --cinnabar-dark: #9e3f2a;
  --cinnabar-soft: #f2e3dc;
  --success: #5a7d5a;
  --serif: "Songti SC", "STSong", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --shadow: 0 22px 70px rgba(60, 47, 35, .13), 0 2px 10px rgba(60, 47, 35, .06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 14%, rgba(192, 79, 51, .045), transparent 26rem),
    var(--paper);
  font-family: var(--sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button, input { font: inherit; }
.shell { width: min(1160px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 100; padding: 10px 16px; color: white; background: var(--ink); }
.skip-link:focus { top: 16px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(224, 216, 199, .72);
  background: rgba(246, 243, 236, .88);
  backdrop-filter: blur(18px);
}
.nav-shell { min-height: 68px; display: flex; align-items: center; gap: 30px; }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; text-decoration: none; }
.brand-seal, .final-seal {
  display: grid;
  place-items: center;
  color: #fffaf2;
  background: var(--cinnabar);
  font-family: var(--serif);
  font-weight: 700;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.25);
}
.brand-seal { width: 36px; height: 36px; border-radius: 9px; font-size: 21px; }
.brand-name { font-family: var(--serif); font-size: 20px; font-weight: 700; letter-spacing: .14em; }
.brand-latin { margin-left: -3px; color: var(--muted); font-size: 11px; letter-spacing: .08em; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a, .nav-cta { font-size: 13px; text-decoration: none; }
.nav-links a { color: var(--ink-2); }
.nav-links a:hover { color: var(--cinnabar); }
.nav-cta { padding: 8px 16px; color: var(--cinnabar); border: 1px solid currentColor; border-radius: 999px; }

.hero { min-height: 690px; display: grid; grid-template-columns: .82fr 1.18fr; gap: 68px; align-items: center; padding-block: 94px 84px; }
.eyebrow, .section-index { margin: 0 0 18px; color: var(--cinnabar); font-size: 12px; font-weight: 650; letter-spacing: .2em; text-transform: uppercase; }
.eyebrow { display: flex; align-items: center; gap: 10px; }
.eyebrow span { width: 24px; height: 1px; background: var(--cinnabar); }
.hero h1, .section-heading h2, .purchase-copy h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: .035em;
}
.hero h1 { font-size: clamp(46px, 5.4vw, 78px); }
.hero h1 em { color: var(--cinnabar); font-style: normal; }
.hero-lead { max-width: 540px; margin: 26px 0 32px; color: var(--ink-2); font-size: 17px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 11px 24px;
  border: 1px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
  transition: transform .16s ease, background .16s ease, border-color .16s ease;
}
.button:hover { transform: translateY(-1px); }
.button-primary { color: #fffaf2; background: var(--cinnabar); border-color: var(--cinnabar); box-shadow: 0 8px 24px rgba(192, 79, 51, .16); }
.button-primary:hover { background: var(--cinnabar-dark); border-color: var(--cinnabar-dark); }
.button-secondary { color: var(--ink); background: rgba(255, 253, 248, .58); border-color: var(--line); }
.button-secondary:hover { border-color: #cfc3ae; background: var(--card); }
.button-wide { width: 100%; }
.hero-note { margin: 15px 0 0; color: var(--muted); font-size: 12px; }

.product-frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid #d9cfbd;
  border-radius: 20px;
  background: #f0ece3;
  box-shadow: var(--shadow);
  transform: rotate(.35deg);
}
.product-frame::before { position: absolute; inset: 42px auto 0 42px; z-index: -1; width: 100%; height: 100%; border: 1px solid rgba(192, 79, 51, .18); border-radius: inherit; content: ""; }
.frame-bar { height: 40px; display: flex; align-items: center; gap: 7px; padding: 0 15px; color: var(--muted); border-bottom: 1px solid var(--line); background: rgba(255,253,248,.92); }
.frame-bar span { width: 8px; height: 8px; border: 1px solid #c8bca7; border-radius: 50%; }
.frame-bar b { margin-left: 7px; font-family: var(--serif); font-size: 12px; letter-spacing: .12em; }
.product-frame img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; object-position: top left; background: var(--paper-2); }
.product-frame figcaption { position: absolute; right: 14px; bottom: 14px; padding: 7px 11px; color: var(--ink-2); border: 1px solid rgba(224,216,199,.85); border-radius: 8px; background: rgba(255,253,248,.9); font-size: 11px; backdrop-filter: blur(10px); }
kbd { min-width: 20px; display: inline-grid; place-items: center; margin-inline: 1px; padding: 1px 4px; border: 1px solid #d8cebc; border-bottom-width: 2px; border-radius: 4px; background: white; font-family: inherit; font-size: 10px; }

.proof-strip { border-block: 1px solid var(--line); background: rgba(239,234,222,.66); }
.proof-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.proof-grid > div { min-height: 108px; display: grid; grid-template-columns: 34px 1fr; align-content: center; column-gap: 12px; padding: 20px 34px; border-left: 1px solid var(--line); }
.proof-grid > div:last-child { border-right: 1px solid var(--line); }
.proof-grid span { grid-row: 1 / 3; color: var(--cinnabar); font-family: var(--serif); font-size: 14px; }
.proof-grid strong { font-family: var(--serif); font-size: 16px; }
.proof-grid small { color: var(--muted); font-size: 12px; }

.section { padding-block: 112px; scroll-margin-top: 72px; }
.section-heading h2, .purchase-copy h2 { font-size: clamp(34px, 4vw, 52px); }
.section-heading > p:not(.section-index) { max-width: 610px; margin: 20px 0 0; color: var(--ink-2); }
.editorial-heading { display: grid; grid-template-columns: .65fr 1.3fr 1fr; column-gap: 44px; align-items: start; }
.editorial-heading .section-index { padding-top: 11px; }
.editorial-heading > p:last-child { margin-top: 8px; }
.editorial-heading.compact { grid-template-columns: .65fr 2.3fr; }
.centered { max-width: 690px; margin: 0 auto 52px; text-align: center; }
.centered > p:not(.section-index) { margin-inline: auto; }

.experience-layout { display: grid; grid-template-columns: 1.2fr .8fr; gap: 82px; margin-top: 74px; }
.workflow { margin: 0; padding: 0; list-style: none; }
.workflow li { display: grid; grid-template-columns: 58px 1fr; gap: 20px; padding: 28px 0; border-top: 1px solid var(--line); }
.workflow li:last-child { border-bottom: 1px solid var(--line); }
.workflow-no { color: var(--cinnabar); font-family: var(--serif); font-size: 14px; }
.workflow h3 { margin: -3px 0 7px; font-family: var(--serif); font-size: 23px; }
.workflow p { margin: 0; color: var(--ink-2); font-size: 14px; }
.feature-ledger { padding: 28px 30px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,253,248,.72); box-shadow: 0 12px 40px rgba(70,55,38,.06); }
.ledger-title { margin: 0 0 18px; color: var(--cinnabar); font-family: var(--serif); font-size: 18px; }
.feature-ledger ul { margin: 0; padding: 0; list-style: none; }
.feature-ledger li { display: flex; justify-content: space-between; gap: 20px; padding: 13px 0; border-top: 1px solid var(--line-soft); color: var(--ink-2); font-size: 13px; }
.feature-ledger b { color: var(--success); font-weight: 650; }

.editions { border-block: 1px solid var(--line); background: var(--paper-2); }
.edition-compare { display: grid; grid-template-columns: 1fr 120px 1fr; align-items: center; max-width: 900px; margin: 0 auto; }
.edition-card { min-height: 440px; padding: 36px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,253,248,.7); }
.pro-card { position: relative; border-color: rgba(192,79,51,.5); background: var(--card); box-shadow: var(--shadow); }
.pro-card::after { position: absolute; top: -12px; right: 22px; padding: 3px 10px; color: white; border-radius: 99px; background: var(--cinnabar); content: "终身买断"; font-size: 11px; }
.edition-topline { display: flex; justify-content: space-between; align-items: baseline; }
.edition-topline span { font-family: var(--serif); font-size: 27px; font-weight: 700; }
.edition-topline small { color: var(--muted); font-size: 11px; }
.price { display: flex; align-items: flex-start; margin: 30px 0 16px; font-variant-numeric: tabular-nums; }
.price sup { padding-top: 11px; font-size: 18px; }
.price strong { font-family: var(--serif); font-size: 58px; line-height: 1; }
.edition-card > p { min-height: 54px; margin: 0 0 26px; color: var(--ink-2); font-size: 13px; }
.retention { display: flex; justify-content: space-between; align-items: center; margin-bottom: 28px; padding: 18px 0; border-block: 1px solid var(--line-soft); font-size: 13px; }
.retention b { color: var(--cinnabar); font-family: var(--serif); font-size: 21px; }
.only-difference { display: grid; place-items: center; gap: 12px; color: var(--muted); font-size: 11px; letter-spacing: .1em; }
.only-difference i { display: block; width: 100%; height: 1px; background: var(--line); }
.same-features { max-width: 900px; display: grid; grid-template-columns: 42px 1fr; gap: 16px; align-items: center; margin: 34px auto 0; padding: 19px 24px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,253,248,.5); }
.seal-mini { width: 36px; height: 36px; display: grid; place-items: center; color: var(--cinnabar); border: 1px solid var(--cinnabar); border-radius: 8px; font-family: var(--serif); }
.same-features p { margin: 0; color: var(--ink-2); font-size: 13px; }
.same-features strong { color: var(--ink); }

.downloads { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 68px; }
.download-card { min-width: 0; display: grid; grid-template-columns: 64px 1fr auto; gap: 18px; align-items: center; padding: 26px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.platform-mark { width: 64px; height: 64px; display: grid; place-items: center; color: var(--cinnabar); border-radius: 14px; background: var(--cinnabar-soft); font-family: var(--serif); font-size: 16px; }
.windows-mark { color: var(--ink-2); background: var(--paper-2); }
.download-copy h3 { margin: 0; font-family: var(--serif); font-size: 22px; }
.download-copy > p { margin: 2px 0 7px; color: var(--muted); font-size: 11px; }
.release-meta { display: flex; flex-wrap: wrap; gap: 8px; color: var(--ink-2); font-size: 11px; }
.release-meta span + span::before { margin-right: 8px; color: var(--line); content: "·"; }
.download-action { white-space: nowrap; padding: 9px 14px; color: var(--cinnabar); border: 1px solid currentColor; border-radius: 8px; font-size: 12px; font-weight: 650; text-decoration: none; }
.download-action.is-disabled { color: var(--muted); cursor: not-allowed; }
.unsigned-note { display: grid; grid-template-columns: 150px 1fr; gap: 30px; margin-top: 24px; padding: 18px 24px; border-top: 1px solid var(--line); color: var(--ink-2); font-size: 12px; }
.unsigned-note strong { color: var(--ink); }
.unsigned-note p { margin: 0; }
.unsigned-note a { color: var(--cinnabar); }

.purchase { color: #f8f1e5; background: #302923; }
.purchase-layout { display: grid; grid-template-columns: 1fr .86fr; gap: 110px; align-items: center; }
.purchase .section-index { color: #de856e; }
.purchase-copy > p:not(.section-index) { max-width: 570px; margin: 24px 0 32px; color: #c9bdad; }
.purchase-facts { display: grid; grid-template-columns: 1fr 1fr; margin: 0; border-top: 1px solid rgba(255,255,255,.16); }
.purchase-facts div { display: flex; justify-content: space-between; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.16); }
.purchase-facts div:nth-child(odd) { padding-right: 26px; }
.purchase-facts div:nth-child(even) { padding-left: 26px; border-left: 1px solid rgba(255,255,255,.16); }
.purchase-facts dt { color: #95897c; font-size: 11px; }
.purchase-facts dd { margin: 0; color: #f8f1e5; font-size: 13px; }
.checkout { padding: 32px; color: var(--ink); border-radius: 16px; background: var(--card); box-shadow: 0 26px 80px rgba(0,0,0,.24); }
.checkout-heading { display: flex; justify-content: space-between; align-items: center; margin-bottom: 27px; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.checkout-heading div { display: flex; flex-direction: column; }
.checkout-heading span { font-family: var(--serif); font-size: 22px; font-weight: 700; }
.checkout-heading small { color: var(--muted); font-size: 11px; }
.checkout-heading > strong { color: var(--cinnabar); font-family: var(--serif); font-size: 34px; font-variant-numeric: tabular-nums; }
.checkout-heading sup { margin-right: 2px; font-size: 14px; }
.checkout > label:not(.consent-row) { display: block; margin-bottom: 7px; font-size: 12px; font-weight: 650; }
.checkout input[type="email"] { width: 100%; padding: 12px 14px; color: var(--ink); border: 1px solid var(--line); border-radius: 8px; outline: none; background: white; }
.checkout input[type="email"]:focus { border-color: var(--cinnabar); box-shadow: 0 0 0 3px rgba(192,79,51,.1); }
.field-help { margin: 6px 0 22px; color: var(--muted); font-size: 10px; }
.consent-row { display: grid; grid-template-columns: 16px 1fr; gap: 9px; align-items: start; margin-bottom: 18px; color: var(--ink-2); font-size: 11px; }
.consent-row input { margin: 3px 0 0; accent-color: var(--cinnabar); }
.consent-row a { color: var(--cinnabar); }
.checkout-button:disabled { cursor: not-allowed; filter: grayscale(.42); opacity: .62; transform: none; }
.checkout-status { margin: 12px 0 0; color: var(--muted); font-size: 10.5px; text-align: center; }
.checkout-status.is-error { color: var(--cinnabar); }
.order-reference { margin: 22px 0 0; padding-top: 18px; color: var(--ink-2); border-top: 1px solid var(--line-soft); font-size: 11px; text-align: center; }

.notes-section { padding-bottom: 128px; }
.notes-grid { margin-top: 60px; border-top: 1px solid var(--line); }
.notes-grid details { border-bottom: 1px solid var(--line); }
.notes-grid summary { display: flex; justify-content: space-between; padding: 22px 0; cursor: pointer; list-style: none; font-family: var(--serif); font-size: 18px; }
.notes-grid summary::-webkit-details-marker { display: none; }
.notes-grid summary b { color: var(--cinnabar); font-family: var(--sans); font-size: 11px; font-weight: 500; }
.notes-grid details[open] summary b { font-size: 0; }
.notes-grid details[open] summary b::after { content: "收起"; font-size: 11px; }
.notes-grid details > div { max-width: 720px; padding: 0 0 24px 58px; color: var(--ink-2); font-size: 13px; }
.notes-grid p { margin: 0; }

.final-cta { padding-block: 42px; color: white; background: var(--cinnabar); }
.final-cta-inner { display: grid; grid-template-columns: 58px 1fr auto; gap: 20px; align-items: center; }
.final-seal { width: 58px; height: 58px; border: 1px solid rgba(255,255,255,.5); border-radius: 13px; font-size: 34px; }
.final-cta p { margin: 0; font-family: var(--serif); font-size: 22px; }
.final-cta small { color: rgba(255,255,255,.76); }
.final-cta .button { color: var(--cinnabar); border-color: white; background: white; box-shadow: none; }

.site-footer { padding-block: 44px; background: #27221e; color: #d7cbbb; }
.footer-layout { display: grid; grid-template-columns: 1fr auto auto; gap: 48px; align-items: center; }
.site-footer strong { color: #f6efe3; font-family: var(--serif); letter-spacing: .08em; }
.site-footer p { margin: 3px 0 0; color: #91867a; font-size: 11px; }
.footer-links { display: flex; gap: 22px; }
.footer-links a { color: #c9bdad; font-size: 11px; text-decoration: none; }
.copyright { white-space: nowrap; }

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; gap: 54px; padding-top: 72px; }
  .hero-copy { max-width: 690px; }
  .editorial-heading { grid-template-columns: 1fr; }
  .editorial-heading .section-index { padding-top: 0; }
  .experience-layout { gap: 42px; }
  .downloads { grid-template-columns: 1fr; }
  .purchase-layout { gap: 54px; }
}

@media (max-width: 760px) {
  .shell { width: min(100% - 32px, 1160px); }
  .nav-links { display: none; }
  .brand-latin { display: none; }
  .hero { min-height: 0; padding-block: 62px; }
  .hero h1 { font-size: 48px; }
  .proof-grid { grid-template-columns: 1fr; }
  .proof-grid > div, .proof-grid > div:last-child { min-height: 86px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .proof-grid > div:last-child { border-bottom: 0; }
  .section { padding-block: 82px; }
  .experience-layout, .purchase-layout { grid-template-columns: 1fr; }
  .edition-compare { grid-template-columns: 1fr; gap: 22px; }
  .only-difference { grid-template-columns: 1fr auto 1fr; }
  .only-difference i { height: 1px; }
  .only-difference::before { width: 100%; height: 1px; background: var(--line); content: ""; }
  .edition-card { min-height: 0; }
  .download-card { grid-template-columns: 54px 1fr; }
  .platform-mark { width: 54px; height: 54px; }
  .download-action { grid-column: 1 / -1; text-align: center; }
  .unsigned-note { grid-template-columns: 1fr; gap: 5px; }
  .footer-layout { grid-template-columns: 1fr; gap: 24px; }
  .footer-links { flex-wrap: wrap; }
  .copyright { white-space: normal; }
}

@media (max-width: 520px) {
  .nav-shell { min-height: 60px; }
  .nav-cta { padding: 6px 12px; }
  .hero h1 { font-size: 41px; }
  .hero-lead { font-size: 15px; }
  .hero-actions .button { width: 100%; }
  .product-frame figcaption { display: none; }
  .section-heading h2, .purchase-copy h2 { font-size: 34px; }
  .experience-layout { margin-top: 48px; }
  .workflow li { grid-template-columns: 42px 1fr; gap: 10px; }
  .feature-ledger, .edition-card, .checkout { padding: 24px 20px; }
  .same-features { grid-template-columns: 1fr; }
  .downloads { margin-top: 48px; }
  .download-card { padding: 20px; }
  .purchase-facts { grid-template-columns: 1fr; }
  .purchase-facts div:nth-child(odd), .purchase-facts div:nth-child(even) { padding-inline: 0; border-left: 0; }
  .notes-grid details > div { padding-left: 0; }
  .final-cta-inner { grid-template-columns: 48px 1fr; }
  .final-seal { width: 48px; height: 48px; }
  .final-cta .button { grid-column: 1 / -1; }
}

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