:root {
  color-scheme: light;
  --paper: #ffffff;
  --ink: #10214f;
  --muted: #5c7298;
  --line: #d5e4f8;
  --blue: #0875ff;
  --yellow: #fff0b8;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 28px; }
body { margin: 0; }
a { color: inherit; text-decoration: none; }
a, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, summary:focus-visible { outline: 3px solid #edaa28; outline-offset: 6px; }
p, h1, h2, h3, figure { margin: 0; }
.wrap { width: min(1240px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: absolute; top: -80px; left: 20px; padding: 12px; background: white; z-index: 5; }
.skip-link:focus { top: 12px; }
.site-header { display: flex; justify-content: space-between; align-items: center; min-height: 108px; border-bottom: 1px solid var(--line); gap: 24px; }
.brand { display: flex; gap: 12px; align-items: center; font-weight: 700; font-size: 18px; }
.brand-icon { display: grid; position: relative; place-items: center; width: 43px; height: 46px; background: var(--blue); color: var(--paper); font: italic 33px Georgia, serif; border-radius: 5px 12px 5px 5px; }
.brand-icon span { position: absolute; color: var(--yellow); right: 3px; bottom: 3px; }
.brand small { display: block; font-size: 9px; letter-spacing: 2px; margin-top: 6px; font-weight: 500; }
nav { display: flex; gap: 32px; font-size: 13px; }
nav a { padding: 12px 0; }
nav a:hover { color: #0063df; }
.hero { display: grid; grid-template-columns: .88fr 1.22fr; align-items: center; gap: 40px; padding-block: 86px 82px; }
.eyebrow { font-size: 11px; letter-spacing: 2px; font-weight: 600; line-height: 1.8; }
.hero .eyebrow { letter-spacing: 2px; font-size: 12px; display: flex; align-items: center; gap: 9px; }
.small-star { font-size: 25px; color: #0875ff; }
h1 { font-family: "Microsoft YaHei UI", "Microsoft YaHei", sans-serif; font-size: clamp(36px, 3.8vw, 56px); font-weight: 500; letter-spacing: -2px; line-height: 1.45; margin: 23px 0; }
.underlined { background: linear-gradient(transparent 80%, var(--yellow) 80%, var(--yellow) 95%, transparent 95%); }
.intro { font-size: 15px; line-height: 2; color: var(--muted); }
.button { display: inline-flex; gap: 36px; align-items: center; padding: 17px 24px; background: var(--blue); color: white; font-size: 14px; border-radius: 4px; margin-top: 30px; transition: background .2s, transform .2s; }
.button:hover { background: #0063df; transform: translateY(-2px); }
.button span { font-size: 20px; }
.hero-note { font-size: 10px; color: var(--muted); margin-top: 19px; line-height: 1.8; }
.hero-note span { padding-inline: 6px; }
.hero-visual { position: relative; padding: 26px 15px 15px; background: #e8f2ff; border-radius: 9px; transform: none; }
.visual-label { font: italic 17px Georgia, serif; text-align: right; padding: 0 6px 20px; }
.visual-label span { color: #0875ff; padding-right: 8px; }
.screenshot-link { display: block; box-shadow: 0 12px 28px #10214f12; border: 1px solid #d5e4f8; border-radius: 5px; overflow: hidden; background: white; }
.screenshot-link img { display: block; width: 100%; height: auto; }
figcaption { display: flex; align-items: center; gap: 6px; font-size: 9px; padding-top: 17px; color: #5c7298; line-height: 1.6; }
.caption-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--blue); flex-shrink: 0; }
.picture-number { margin-left: auto; font-size: 8px; letter-spacing: 1px; }
.principles { border-block: 1px solid var(--line); }
.principles .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 27px; font-size: 14px; }
.principles p { color: var(--muted); }
.principles strong { font-weight: 500; color: var(--ink); }
.principles span::before { content: "✧"; color: #0875ff; margin-right: 12px; }
.reading-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; padding-block: 98px; }
h2 { font-family: "Microsoft YaHei UI", "Microsoft YaHei", sans-serif; font-size: clamp(29px, 3vw, 40px); line-height: 1.5; font-weight: 500; letter-spacing: -1px; margin-top: 17px; }
.section-heading > p:last-child { margin-top: 24px; font-size: 14px; color: var(--muted); line-height: 2; }
.reading-steps article { display: flex; gap: 27px; padding-block: 28px; border-bottom: 1px solid var(--line); }
.reading-steps article:first-child { padding-top: 0; }
.reading-steps article:last-child { border: 0; padding-bottom: 0; }
.step-number { font: italic 25px Georgia, serif; color: #0875ff; padding-top: 2px; }
h3 { font-size: 19px; line-height: 1.6; font-weight: 600; }
.reading-steps p, .feature-grid p { font-size: 14px; line-height: 1.95; color: var(--muted); margin-top: 12px; }
.feature-tag { display: inline-block; font-size: 10px; margin: 15px 8px 0 0; padding: 5px 9px; border: 1px solid var(--line); border-radius: 3px; }
.family-section { background: #edf6ff; padding-block: 73px; }
.family-heading { display: flex; justify-content: space-between; align-items: end; gap: 32px; }
.family-heading > p { font-size: 14px; color: var(--muted); line-height: 2; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 48px; }
.feature-grid article { padding: 0 34px; border-left: 1px solid #d5e4f8; }
.feature-grid article:first-child { padding-left: 0; border: 0; }
.feature-grid article:last-child { padding-right: 0; }
.feature-symbol { display: block; font: italic 30px Georgia, serif; margin-bottom: 23px; color: var(--blue); }
.feature-grid h3 { font-size: 18px; }
.faq-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; padding-block: 92px; }
details { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; padding: 22px 35px 22px 0; position: relative; list-style: none; font-size: 15px; line-height: 1.6; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 4px; font-size: 22px; top: 17px; font-weight: 400; }
details[open] summary::after { content: "−"; }
details p { color: var(--muted); font-size: 13px; line-height: 2; padding-bottom: 22px; padding-right: 25px; }
.closing { background: var(--blue); color: var(--paper); padding: 42px 55px; display: flex; align-items: center; gap: 35px; border-radius: 5px; }
.closing-star { color: var(--yellow); font-size: 69px; line-height: 1; }
.closing p { font-family: "Microsoft YaHei UI", "Microsoft YaHei", sans-serif; font-size: 30px; line-height: 1.5; }
.closing strong { font-weight: 500; }
.closing a { margin-left: auto; font-size: 13px; border-bottom: 1px solid #b7d7ff; padding-block: 14px; }
.closing a:hover { color: var(--yellow); }
.closing a span { margin-left: 23px; }
.site-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; padding-block: 36px 25px; font-size: 12px; }
.footer-name { font-weight: 600; }
.footer-name span { color: var(--muted); font-size: 10px; font-weight: 400; margin-left: 10px; }
.site-footer p { color: var(--muted); }
.site-footer small { flex-basis: 100%; color: var(--muted); font-size: 10px; line-height: 1.8; }
@media (min-width: 1500px) { .hero { padding-block: 105px; } }
@media (max-width: 1000px) {
  .wrap { width: calc(100% - 56px); }
  .hero { gap: 25px; padding-block: 60px; }
  .picture-number { display: none; }
  .reading-section, .faq-section { gap: 40px; }
  .feature-grid article { padding-inline: 23px; }
}
@media (max-width: 720px) {
  .wrap { width: calc(100% - 40px); }
  .site-header { min-height: 92px; flex-wrap: wrap; padding-block: 20px 14px; gap: 16px; }
  .brand { font-size: 16px; }
  .brand small { font-size: 8px; }
  .brand-icon { width: 36px; height: 39px; font-size: 28px; }
  nav { width: 100%; justify-content: space-between; gap: 16px; font-size: 12px; }
  nav a { padding-block: 8px; }
  .hero { grid-template-columns: 1fr; gap: 42px; padding-block: 42px; }
  h1 { font-size: clamp(36px, 8vw, 50px); letter-spacing: -1px; margin-block: 18px; }
  .intro { font-size: 14px; }
  .hero-visual { transform: none; padding: 18px 10px 12px; }
  .visual-label { font-size: 15px; padding-bottom: 14px; }
  .picture-number { display: inline; }
  .principles .wrap { flex-wrap: wrap; justify-content: space-between; gap: 17px 5px; padding-block: 23px; font-size: 12px; }
  .principles p { flex-basis: 100%; font-size: 14px; }
  .principles span::before { margin-right: 6px; }
  .reading-section, .faq-section { grid-template-columns: 1fr; padding-block: 55px; gap: 35px; }
  .section-heading > p:last-child { margin-top: 16px; }
  .reading-steps article { gap: 20px; }
  .family-section { padding-block: 50px; }
  .family-heading { display: block; }
  .family-heading > p { margin-top: 20px; }
  .feature-grid { grid-template-columns: 1fr; gap: 27px; margin-top: 32px; }
  .feature-grid article, .feature-grid article:first-child { padding: 25px 0 0; border: 0; border-top: 1px solid #d5e4f8; }
  .feature-symbol { margin-bottom: 13px; }
  .closing { padding: 30px 24px; flex-wrap: wrap; gap: 20px; }
  .closing-star { font-size: 48px; }
  .closing p { font-size: 26px; }
  .closing a { margin-left: 0; flex-basis: 100%; }
  .site-footer { padding-top: 28px; gap: 13px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
  .button:hover { transform: none; }
}
/* 官网沿用桌面应用的蓝色、浅蓝背景与圆角。 */
body { background: #fff; }
.hero-visual { border: 1px solid var(--line); border-radius: 14px; }
.brand-icon, .button, .closing { border-radius: 11px; }
h1, h2 { font-weight: 600; }
.coverage-section { background: #edf6ff; padding-block: 65px; }
.coverage-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; }
.coverage-heading > p { max-width: 410px; font-size: 14px; line-height: 1.9; color: var(--muted); }
.coverage-grid { display: grid; grid-template-columns: .7fr 1fr 1fr; gap: 20px; margin-top: 32px; }
.stat { padding: 28px; background: white; border: 1px solid var(--line); border-radius: 14px; }
.stat strong { display: block; font-size: 44px; color: var(--blue); line-height: 1.3; }
.stat h3 { font-size: 16px; margin: 12px 0 8px; }
.stat p, .coverage-note { font-size: 12px; line-height: 1.9; color: var(--muted); }
.coverage-note { margin-top: 20px; }
.coverage-detail { margin-top: 12px; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 12px; background: white; }
th, td { padding: 12px 15px; text-align: left; border-bottom: 1px solid var(--line); }
th { color: var(--ink); background: #e8f2ff; }
td { color: var(--muted); }
.showcase { padding-block: 75px; }
.showcase-intro { margin-top: 16px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.showcase-row { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: center; margin-top: 48px; }
.showcase-row.reverse { grid-template-columns: 1fr 1.4fr; }
.showcase-row.reverse figure { order: 2; }
.showcase-row.reverse .showcase-copy { order: 1; }
.showcase figure { padding: 12px; background: #edf6ff; border: 1px solid var(--line); border-radius: 14px; }
.showcase img, .profile-image img { display: block; width: 100%; height: auto; border-radius: 7px; }
.showcase-copy h3 { font-size: 26px; margin: 12px 0; }
.showcase-copy p, .showcase-copy li { font-size: 14px; color: var(--muted); line-height: 1.95; }
.showcase-copy ul { padding-left: 20px; margin-bottom: 0; }
.showcase-copy li + li { margin-top: 8px; }
.showcase figcaption { padding: 12px 4px 0; font-size: 11px; }
.profile-image { max-width: 850px; margin: 38px auto 0; padding: 12px; border: 1px solid var(--line); background: white; border-radius: 14px; }
.profile-image figcaption { font-size: 11px; padding: 12px 4px 0; }
@media (max-width: 900px) {
 .coverage-grid { grid-template-columns: 1fr 1fr; }
 .stat:first-child { grid-column: 1 / -1; }
 .showcase-row, .showcase-row.reverse { gap: 26px; }
}
@media (max-width: 720px) {
 nav { gap: 8px; flex-wrap: wrap; }
 .coverage-section, .showcase { padding-block: 45px; }
 .coverage-heading { display: block; }
 .coverage-heading > p { margin-top: 20px; }
 .coverage-grid { grid-template-columns: 1fr; gap: 14px; }
 .stat { padding: 22px; }
 .stat strong { font-size: 38px; }
 .showcase-row, .showcase-row.reverse { grid-template-columns: 1fr; gap: 22px; margin-top: 36px; }
 .showcase-row.reverse figure, .showcase-row.reverse .showcase-copy { order: initial; }
 .showcase-copy h3 { font-size: 23px; }
 th, td { min-width: 135px; }
 th:first-child, td:first-child { min-width: 205px; }
}
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; margin-top: 30px; }
.hero-actions .button { margin-top: 0; }
.secondary-link { color: var(--blue); font-size: 13px; padding-block: 12px; }
.product-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.product-badges span { padding: 5px 10px; border-radius: 6px; background: #e8f2ff; color: #0063df; font-size: 11px; }
.download-section { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; padding-block: 20px 75px; }
.download-description { font-size: 14px; line-height: 1.9; color: var(--muted); margin-top: 20px; }
.download-options { display: grid; gap: 16px; }
.download-card { padding: 24px; border: 1px solid var(--line); background: #edf6ff; border-radius: 14px; }
.download-card p { font-size: 13px; line-height: 1.8; color: var(--muted); margin-top: 10px; }
.release-link { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 14px 18px; margin-top: 18px; border-radius: 9px; background: var(--blue); color: white; font-size: 14px; }
.release-link.secondary { background: white; color: #0063df; border: 1px solid var(--line); }
.release-link[aria-disabled="true"] { background: #e1eaf7; color: #526889; cursor: not-allowed; }
.release-link[href]:hover { background: #0063df; color: white; }
@media (max-width: 720px) {
 .download-section { grid-template-columns: 1fr; gap: 28px; padding-block: 0 45px; }
 .download-card { padding: 20px; }
}

/* Full catalog within the hero, preserving the complete screenshot. */
.hero-bookshelf { grid-column: 1 / -1; margin-top: 12px; padding: 24px 20px 16px; min-width: 0; }
.bookshelf-heading { display: flex; justify-content: space-between; align-items: end; gap: 16px; padding: 0 4px 22px; }
.bookshelf-heading h2 { font-size: clamp(22px, 2.4vw, 30px); margin-top: 6px; }
.bookshelf-heading > span { color: var(--muted); font-size: 11px; white-space: nowrap; }
@media (max-width: 600px) {
  .hero-bookshelf { padding: 16px 10px 12px; }
  .bookshelf-heading { flex-direction: column; align-items: start; gap: 8px; padding-bottom: 16px; }
  .hero-bookshelf .picture-number { display: none; }
}

.footer-personal { color: var(--muted); font-size: 14px; white-space: nowrap; }
.footer-personal:hover { color: var(--primary, #0875ff); text-decoration: underline; text-underline-offset: 4px; }