:root {
  color-scheme: light;
  --paper: #f7f5ef;
  --ink: #252620;
  --muted: #696b61;
  --line: #d8d7ce;
  --red: #b63826;
  --serif: "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --sans: "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 28px; }
body { margin: 0; color: var(--ink); background: var(--paper); font: 14px/1.75 var(--sans); -webkit-font-smoothing: antialiased; }
button, input { font: inherit; }
button, a, input { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
button { color: inherit; }
button:focus-visible, a:focus-visible, input:focus-visible, [tabindex]:focus-visible { outline: 2px solid var(--red); outline-offset: 5px; }
button:disabled { cursor: default; }
[hidden] { display: none !important; }
::selection { background: #ead1b5; color: var(--ink); }
img, svg { display: block; max-width: 100%; }
h1, h2, h3, p { margin: 0; }
.wrap { width: min(1320px, calc(100% - 96px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 10; left: 16px; top: -70px; padding: 10px 18px; color: white; background: var(--ink); }
.skip-link:focus { top: 12px; }
.site-header { height: 86px; border-bottom: 1px solid var(--ink); display: flex; justify-content: space-between; align-items: center; }
.brand { display: inline-flex; gap: 13px; align-items: center; font-size: 18px; font-weight: 600; letter-spacing: 1px; line-height: 1.4; }
.brand small { display: block; margin-top: 6px; font: 9px/1.2 var(--sans); letter-spacing: 2px; }
.brand-mark { display: grid; place-items: center; width: 39px; height: 43px; background: var(--red); color: var(--paper); font: 28px/1 var(--serif); }
.site-header nav { display: flex; gap: 40px; align-items: center; font-size: 13px; }
.site-header nav a { padding: 12px 0; }
.site-header nav a:hover, .site-header nav .active { color: var(--red); }
.site-header nav span { margin-left: 10px; font-size: 18px; }
.eyebrow { font: 10px/1.5 var(--sans); letter-spacing: 2.3px; }
.red-dot { display: inline-block; width: 6px; height: 6px; margin: 0 9px 1px 0; border-radius: 50%; background: var(--red); }
.hero { padding: 34px 0 38px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 7%; align-items: end; }
.hero-copy h1 { font: 600 clamp(32px, 3.1vw, 44px)/1.4 var(--serif); letter-spacing: -1.5px; margin-top: 14px; }
.hero-copy h1 em { color: var(--red); font-style: normal; }
.hero-description { color: var(--muted); font-size: 13px; line-height: 1.9; }
.hero-overview { padding-bottom: 7px; }
.hero-stats { display: flex; align-items: center; gap: 22px; margin-top: 22px; }
.hero-stats > div { display: flex; align-items: center; gap: 9px; }
.hero-stats strong { font: 28px/1 Georgia, serif; letter-spacing: -1px; }
.hero-stats span { font-size: 10px; color: var(--muted); }
.hero-stats > p { font-size: 10px; color: var(--muted); border-left: 1px solid var(--line); padding-left: 20px; }
.case-directory { border-top: 1px solid var(--ink); padding-top: 24px; }
.directory-heading { display: flex; justify-content: space-between; gap: 28px; align-items: center; margin-bottom: 20px; }
.directory-heading h2 { font: 600 clamp(22px, 2vw, 27px)/1.4 var(--serif); }
.directory-heading h2 > span { color: var(--red); }
.directory-heading > p { color: var(--muted); font-size: 9px; letter-spacing: 1.5px; }
.directory-tools { display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); padding-bottom: 16px; }
.category-filters { display: flex; flex-wrap: wrap; column-gap: 21px; row-gap: 8px; }
.category-filters button { position: relative; display: inline-flex; align-items: baseline; gap: 4px; border: 0; padding: 9px 0; background: none; white-space: nowrap; font-size: 12px; color: var(--muted); }
.category-filters button span { font-size: 9px; color: var(--muted); font-variant-numeric: tabular-nums; }
.category-filters button[aria-pressed="true"] { color: var(--red); }
.category-filters button[aria-pressed="true"]::after { content: ""; position: absolute; bottom: 1px; height: 2px; background: var(--red); left: 0; right: 0; }
.search-box { flex: 0 0 239px; min-width: 0; display: flex; align-items: center; gap: 10px; border: 1px solid #c9cac0; padding: 9px 11px; }
.search-box:focus-within { border-color: var(--red); }
.search-box > svg { flex: 0 0 16px; width: 16px; height: 16px; stroke: var(--muted); stroke-width: 1.5; fill: none; }
.search-box input { min-width: 0; width: 100%; font-size: 12px; border: 0; outline: 0; color: var(--ink); background: none; padding: 0; }
.search-box input::placeholder { color: #73756c; }
.search-box input::-webkit-search-cancel-button { display: none; }
.search-box button { padding: 0; width: 20px; height: 22px; line-height: 1; background: transparent; border: 0; font-size: 20px; }
.directory-caption { display: flex; justify-content: space-between; gap: 20px; color: var(--muted); font-size: 10px; margin: 13px 0 23px; letter-spacing: .6px; }
.case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 46px 28px; }
.case-card { min-width: 0; display: flex; flex-direction: column; }
.preview { position: relative; overflow: hidden; aspect-ratio: 1.55; background: var(--case-soft, #eeebe3); }
.preview > img { position: absolute; top: 0; width: 100%; height: 100%; object-fit: cover; object-position: top; opacity: 0; transition: opacity .2s, transform .3s; }
.preview-loaded > img { opacity: 1; }
.preview-loaded .preview-fallback { display: none; }
.preview-link { display: block; position: relative; border: 1px solid #d8d9d2; border-radius: 5px; }
.preview-open { position: absolute; bottom: 14px; right: 14px; border: 1px solid #fff8; border-radius: 3px; padding: 7px 12px; background: var(--ink); color: white; font-size: 11px; opacity: 0; transform: translateY(4px); transition: opacity .2s, transform .2s; }
.preview-link:hover .preview-open, .preview-link:focus-visible .preview-open { opacity: 1; transform: none; }
.preview-link:hover img { transform: scale(1.015); }
.preview-fallback { height: 100%; padding: 26px; display: flex; flex-direction: column; justify-content: center; color: var(--case-accent, var(--red)); }
.preview-eyebrow { font-size: 9px; letter-spacing: 1px; margin-bottom: 16px; }
.preview-title { font: 500 27px/1.5 var(--serif); }
.preview-rule { width: 28px; height: 1px; background: currentColor; margin: 16px 0 12px; flex-shrink: 0; }
.preview-summary { font-size: 10px; line-height: 1.8; max-width: 29em; opacity: .9; }
.card-meta { display: flex; justify-content: space-between; gap: 10px; align-items: center; margin-top: 18px; font-size: 10px; color: var(--muted); }
.card-meta > span:first-child { display: inline-flex; align-items: center; gap: 6px; }
.card-meta i { background: var(--case-accent); display: inline-block; width: 5px; height: 5px; border-radius: 50%; }
.case-state { font-size: 10px; font-weight: normal; letter-spacing: .5px; padding: 1px 6px; color: #4b6252; border: 1px solid #bdc7bc; line-height: 1.5; }
.case-state.planned { color: #726753; border-color: #c9c1ae; }
.case-card h3 { font: 600 21px/1.5 var(--serif); margin-top: 10px; }
.case-card h3 a { display: flex; justify-content: space-between; gap: 12px; }
.case-card h3 span { font: 21px/1.5 var(--sans); color: var(--muted); transition: color .15s, transform .15s; }
.case-card h3 a:hover { color: var(--red); }
.case-card h3 a:hover span { color: var(--red); transform: translate(2px, -2px); }
.case-card > p { color: var(--muted); font-size: 12px; line-height: 1.9; padding: 11px 0 19px; flex: 1; }
.card-bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; font-size: 11px; color: var(--muted); }
.card-bottom > :last-child > span { padding-left: 10px; }
.demo-link { display: inline-flex; align-items: center; justify-content: space-between; flex-shrink: 0; gap: 25px; padding: 9px 13px; border: 1px solid var(--ink); border-radius: 3px; background: var(--ink); color: var(--paper); font-size: 11px; line-height: 1.8; transition: background .2s, border-color .2s; }
.demo-link:hover { background: var(--red); border-color: var(--red); }
.demo-link > span { font-size: 16px; line-height: 1; }
.card-detail-link { padding: 9px 0; }
.card-detail-link:hover { color: var(--red); }
.empty-state { grid-column: 1 / -1; padding: 55px 16px 70px; text-align: center; }
.empty-state > span { font: 50px/1.4 var(--serif); color: var(--red); }
.empty-state h3 { font: 24px/1.8 var(--serif); }
.empty-state p { color: var(--muted); margin: 10px 0 24px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 36px; border: 1px solid var(--ink); border-radius: 3px; padding: 12px 20px; font-size: 12px; line-height: 1.6; transition: color .18s, background-color .18s, border-color .18s; }
.button-dark { color: var(--paper); background: var(--ink); }
.button-dark:hover { background: var(--red); border-color: var(--red); }
.button-outline { color: var(--ink); background: transparent; border-color: var(--line); }
.button-outline:hover { color: var(--red); border-color: var(--red); }
.button > span { font-size: 18px; line-height: 1; }
.site-footer { margin-top: 85px; border-top: 1px solid var(--ink); }
.contact-block { display: grid; grid-template-columns: 1.35fr 1fr; gap: 11%; padding: 55px 0 48px; }
.contact-block .eyebrow { color: var(--red); }
.contact-title { font: 600 31px/1.6 var(--serif); margin-top: 10px; }
.contact-note { font-size: 12px; color: var(--muted); margin-top: 10px; }
.contact-methods { min-width: 0; align-self: center; }
.contact-methods > a, .wechat-contact { display: grid; grid-template-columns: 65px 1fr 38px; gap: 10px; align-items: center; border-bottom: 1px solid var(--line); padding: 13px 0; }
.contact-methods > a > span, .wechat-contact > span { font-size: 11px; color: var(--muted); }
.contact-methods strong { font-weight: 400; font-size: 17px; letter-spacing: .4px; user-select: all; }
.contact-methods b { font-size: 21px; color: var(--red); font-weight: 400; }
.wechat-contact button { border: 0; border-bottom: 1px solid var(--muted); padding: 2px 0; background: none; font-size: 11px; }
.wechat-contact button:hover { color: var(--red); border-color: var(--red); }
.copy-feedback { min-height: 23px; padding-top: 4px; font-size: 10px; color: var(--red); }
.footer-bottom { display: flex; align-items: center; gap: 45px; border-top: 1px solid var(--line); padding: 26px 0 30px; }
.footer-brand { font: 600 15px/1.6 var(--serif); flex: 0 0 150px; }
.footer-brand span { display: block; font: 8px/1.7 var(--sans); letter-spacing: 1.4px; margin-top: 4px; }
.footer-bottom > p { font-size: 10px; line-height: 1.8; color: var(--muted); max-width: 650px; }
.back-top { display: grid; place-items: center; border: 1px solid var(--line); width: 35px; height: 35px; flex: 0 0 35px; margin-left: auto; font-size: 18px; }
.back-top:hover { border-color: var(--red); color: var(--red); }
.loading-note { color: var(--muted); padding: 60px 0; }
.noscript-note { margin: 40px; }
.case-heading { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 45px; padding: 28px 0 30px; }
.case-back { display: inline-block; color: var(--muted); font-size: 11px; margin-bottom: 26px; }
.case-back:hover { color: var(--red); }
.case-kicker { display: flex; align-items: center; gap: 20px; font-size: 10px; letter-spacing: 1px; margin-bottom: 10px; }
.case-kicker > :first-child { color: var(--red); }
.case-kicker > :nth-child(2) { color: var(--muted); }
.case-heading h1 { font: 600 clamp(32px, 3.3vw, 46px)/1.4 var(--serif); letter-spacing: -1px; text-wrap: balance; }
.case-title > p { color: var(--muted); font-size: 14px; line-height: 1.9; max-width: 750px; margin-top: 13px; }
.case-actions { display: flex; flex-direction: column; align-items: center; gap: 15px; padding-bottom: 4px; }
.live-demo { gap: 18px; padding: 15px 23px; font-size: 14px; white-space: nowrap; }
.live-demo small { font-size: 10px; letter-spacing: .5px; }
.case-actions .text-link { font-size: 10px; }
.case-showcase { margin: 0 0 18px; }
.showcase-bar { display: flex; justify-content: space-between; align-items: center; padding: 11px 17px; background: #efeee7; border: 1px solid var(--line); border-bottom: 0; border-radius: 5px 5px 0 0; font-size: 10px; color: var(--muted); }
.showcase-bar > span:first-child { display: flex; align-items: center; gap: 10px; }
.showcase-bar i { width: 6px; height: 6px; border-radius: 50%; background: var(--case-accent); }
.case-showcase .preview { aspect-ratio: 2.15; border: 1px solid var(--line); border-radius: 0 0 5px 5px; }
.case-showcase .preview-fallback { padding: 45px; }
.case-showcase .preview-title { font-size: 36px; }
.case-showcase figcaption { display: flex; justify-content: space-between; align-items: center; gap: 18px; margin-top: 12px; color: var(--muted); font-size: 10px; }
.pending-label { display: inline-block; margin-top: 26px; font-size: 12px; color: var(--muted); border-left: 2px solid var(--line); padding-left: 12px; }
.case-layout { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 55px; border-top: 1px solid var(--ink); margin-top: 36px; }
.case-sections { min-width: 0; }
.case-toc { position: sticky; top: 30px; align-self: start; padding-top: 45px; display: grid; gap: 20px; font-size: 12px; }
.case-toc a { display: flex; gap: 20px; align-items: center; }
.case-toc a:hover { color: var(--red); }
.case-toc a > span { color: var(--muted); font-size: 10px; }
.case-toc .toc-back { border-top: 1px solid var(--line); padding-top: 22px; margin-top: 7px; color: var(--muted); font-size: 10px; }
.case-section { padding: 43px 0 48px; border-bottom: 1px solid var(--line); }
.case-section:last-child { border: 0; padding-bottom: 0; }
.section-no { font-size: 10px; color: var(--red); letter-spacing: 1.3px; }
.section-heading h2 { font: 600 30px/1.5 var(--serif); margin-top: 5px; }
.case-section blockquote { font: 500 25px/1.8 var(--serif); margin: 25px 0; padding-left: 23px; border-left: 2px solid var(--red); }
.needs-list, .delivery-list { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 12px; }
.needs-list li, .delivery-list li { display: flex; gap: 13px; font-size: 13px; line-height: 1.9; }
.needs-list li::before { content: "—"; color: var(--muted); flex-shrink: 0; }
.section-intro { color: var(--muted); margin-top: 19px; font-size: 14px; line-height: 1.9; }
.table-scroll { overflow-x: auto; max-width: 100%; margin-top: 25px; border-top: 1px solid var(--ink); }
table { border-collapse: collapse; width: 100%; font-size: 12px; text-align: left; line-height: 1.8; }
th, td { padding: 14px 17px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 500; background: #eeede5; white-space: nowrap; }
td { min-width: 78px; overflow-wrap: anywhere; }
.data-caption { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: center; margin-top: 15px; font-size: 10px; color: var(--muted); }
.text-link { display: inline-flex; align-items: center; gap: 20px; border-bottom: 1px solid var(--line); padding-bottom: 3px; font-size: 11px; }
.text-link:hover { color: var(--red); border-color: var(--red); }
.text-link span { font-size: 15px; }
.delivery-list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px 26px; margin: 23px 0 28px; }
.delivery-list li::before { content: "↗"; color: var(--red); flex-shrink: 0; }
.delivery-figure { margin: 36px 0 0; }
.screenshot-image-link { display: block; cursor: zoom-in; }
.full-preview { background: #efeee7; border: 1px solid var(--line); }
.full-preview .preview-fallback { min-height: 320px; }
.full-preview > img { width: 100%; height: auto; }
.full-preview:not(.preview-loaded) > img { display: none; }
.delivery-figure figcaption { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 14px; color: var(--muted); font-size: 10px; }
.pending-delivery { display: flex; gap: 22px; padding: 26px; border: 1px solid var(--line); margin-top: 27px; }
.pending-mark { font: 40px/1.3 var(--serif); color: #9b8a66; }
.pending-delivery strong { font-weight: 500; font-size: 17px; }
.pending-delivery p { color: var(--muted); font-size: 12px; margin-top: 7px; }
.page-message { padding: 100px 0; min-height: 440px; }
.page-message h1 { font: 600 38px/1.6 var(--serif); margin-top: 15px; }
.page-message > p { color: var(--muted); margin: 15px 0 25px; }
.quiet { color: var(--muted); margin-top: 20px; }
@media (max-width: 1100px) {
  .wrap { width: calc(100% - 64px); }
  .hero { gap: 6%; }
  .hero-stats { gap: 17px; flex-wrap: wrap; }
  .hero-stats > p { border: 0; padding: 0; }
  .directory-tools { flex-wrap: wrap; }
  .search-box { flex-basis: 270px; }
  .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 37px 28px; }
  .case-card h3 { font-size: 19px; }
  .preview-fallback { padding: 20px; }
  .preview-title { font-size: 23px; }
  .preview-summary { display: none; }
  .contact-block { gap: 7%; grid-template-columns: 1fr 1fr; }
  .contact-title { font-size: 27px; }
  .case-layout { grid-template-columns: 140px minmax(0, 1fr); gap: 35px; }
}
@media (max-width: 760px) {
  .wrap { width: calc(100% - 40px); }
  .site-header { height: 82px; }
  .brand { font-size: 16px; gap: 9px; }
  .brand-mark { width: 32px; height: 36px; font-size: 24px; }
  .brand small { font-size: 7px; letter-spacing: 1.4px; }
  .site-header nav { gap: 21px; font-size: 11px; }
  .site-header nav span { margin-left: 3px; font-size: 15px; }
  .hero { padding: 25px 0 27px; grid-template-columns: 1fr; gap: 15px; }
  .hero-copy h1 { font-size: clamp(31px, 8vw, 48px); letter-spacing: -1.2px; margin-top: 13px; line-height: 1.4; }
  .hero-description { font-size: 12px; }
  .hero-overview { padding: 0; }
  .hero-stats { margin-top: 15px; gap: 19px; }
  .hero-stats strong { font-size: 25px; }
  .hero-stats > p { flex-basis: auto; font-size: 9px; }
  .directory-heading { margin-bottom: 19px; }
  .directory-heading h2 { font-size: 22px; }
  .directory-heading > p { display: none; }
  .directory-tools { gap: 19px; }
  .category-filters { column-gap: 18px; row-gap: 2px; }
  .search-box { flex-basis: 100%; padding: 11px; }
  .search-box input { font-size: 14px; }
  .directory-caption { font-size: 9px; gap: 10px; margin: 15px 0 23px; }
  .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 20px; }
  .case-card h3 { font-size: 18px; }
  .case-card > p { font-size: 11px; }
  .preview-title { font-size: 22px; }
  .preview-eyebrow { margin-bottom: 12px; font-size: 8px; }
  .preview-rule { margin-top: 13px; }
  .card-meta { font-size: 9px; }
  .case-state { font-size: 9px; }
  .site-footer { margin-top: 55px; }
  .contact-block { grid-template-columns: 1fr; gap: 26px; padding: 35px 0 24px; }
  .contact-title { font-size: 26px; }
  .contact-methods strong { font-size: 16px; }
  .footer-bottom { gap: 20px; flex-wrap: wrap; padding: 23px 0; }
  .footer-brand { flex: 1; }
  .footer-bottom > p { flex: 0 0 100%; order: 3; }
  .case-heading { grid-template-columns: 1fr; gap: 23px; padding: 22px 0 25px; }
  .case-heading h1 { font-size: 31px; }
  .case-title > p { font-size: 13px; margin-top: 13px; }
  .case-back { margin-bottom: 20px; }
  .case-actions { flex-direction: row; gap: 24px; padding: 0; }
  .live-demo { padding: 12px 15px; font-size: 12px; gap: 15px; }
  .case-showcase .preview { aspect-ratio: 1.45; }
  .case-showcase .preview-fallback { padding: 25px; }
  .case-showcase .preview-title { font-size: 26px; }
  .case-showcase figcaption { align-items: flex-start; font-size: 9px; }
  .case-showcase figcaption > span { max-width: 53%; }
  .case-showcase .text-link { gap: 8px; flex-shrink: 0; font-size: 10px; }
  .case-kicker { gap: 16px; font-size: 10px; }
  .case-layout { grid-template-columns: 1fr; gap: 0; margin-top: 27px; }
  .case-toc { position: static; display: flex; justify-content: space-between; gap: 15px; padding: 21px 0; border-bottom: 1px solid var(--line); font-size: 11px; }
  .case-toc a { gap: 8px; }
  .case-toc .toc-back { display: none; }
  .case-section { padding: 31px 0 35px; }
  .section-heading h2 { font-size: 27px; }
  .case-section blockquote { font-size: 22px; padding-left: 18px; margin: 22px 0; }
  .needs-list li, .delivery-list li { font-size: 12px; }
  .section-intro { font-size: 13px; }
  .delivery-list { grid-template-columns: 1fr; }
  th, td { padding: 12px; }
  td { min-width: 95px; }
  .delivery-figure { margin-top: 28px; }
  .full-preview .preview-summary { display: block; }
  .pending-delivery { padding: 20px; gap: 15px; }
  .page-message { padding: 65px 0; }
  .page-message h1 { font-size: 28px; }
}
@media (max-width: 480px) {
  .case-grid { grid-template-columns: 1fr; gap: 32px; }
  .preview { aspect-ratio: 1.55; }
  .preview-fallback { padding: 27px; }
  .preview-title { font-size: 28px; }
  .preview-summary { display: block; }
  .case-card h3 { font-size: 21px; }
  .case-card > p { font-size: 12px; }
  .card-meta { margin-top: 15px; }
  .hero-stats { gap: 19px; }
  .hero-stats > p { padding-left: 0; border: 0; font-size: 9px; }
  .directory-caption > span { letter-spacing: 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
  .preview-link:hover img { transform: none; }
}
@media print {
  .site-header nav, .case-toc, .site-footer, .button, .screenshot-view, .delivery-resources > a { display: none; }
  .wrap { width: 100%; }
  .case-layout { display: block; }
  .case-heading { padding: 24px 0; }
  .case-section { break-inside: avoid; }
  .table-scroll { overflow: visible; }
}
.delivery-resources { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; margin-top: 24px; }