:root {
  --background: #f8f8f7;
  --surface: #fff;
  --ink: #151515;
  --muted: #616161;
  --line: #deded9;
  --accent: #3057f3;
  --ticket: #d58552;
  color-scheme: light;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--ink);
  background: var(--background);
  font-size: 15px;
  line-height: 1.65;
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: inherit; text-underline-offset: 4px; }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(32px, 4vw, 52px); line-height: 1.25; letter-spacing: -.035em; }
h2 { font-size: 22px; line-height: 1.4; }
p { max-width: 65ch; }
.muted, dt, small { color: var(--muted); }
.skip-link { position: absolute; top: -100px; left: 16px; padding: 10px 16px; background: white; z-index: 10; }
.skip-link:focus { top: 12px; }
.notice { padding: 8px 16px; text-align: center; background: var(--accent); color: white; font-size: 13px; }
.site-header, main, .site-footer { width: min(100%, 1200px); margin-inline: auto; padding-inline: 32px; }
.site-header { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 8px; font-size: 26px; font-weight: 800; text-decoration: none; letter-spacing: -.05em; }
.brand-mark { color: var(--accent); font-size: 30px; }
.brand small { font-size: 12px; font-weight: 500; margin-left: 5px; letter-spacing: 0; }
.site-header nav { display: flex; gap: 28px; }
.site-header nav a { text-decoration: none; padding-block: 12px; }
.site-header nav a:hover, .site-header nav a[aria-current] { color: var(--accent); }
.catalog-intro { display: flex; align-items: end; justify-content: space-between; gap: 32px; padding-block: 48px 36px; }
.catalog-intro h1 { margin-bottom: 18px; }
.catalog-intro p { color: var(--muted); margin-bottom: 0; }
.purchase-flow { display: flex; gap: 26px; list-style: none; padding: 0 0 4px; margin: 0; flex-shrink: 0; }
.purchase-flow li { display: grid; gap: 6px; font-size: 13px; }
.purchase-flow span { color: var(--accent); font-size: 20px; font-variant-numeric: tabular-nums; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.card { min-width: 0; padding: 14px; border: 1px solid #e8e8e3; border-radius: 20px; background: var(--surface); display: flex; flex-direction: column; }
.ticket { border-radius: 12px; overflow: hidden; background: #f0efec; }
.ticket-main { background: var(--ticket); padding: 16px 16px 28px; position: relative; min-height: 142px; border-bottom: 5px dotted #f0efec; isolation: isolate; }
.paused .ticket-main { background: #b89c8b; }
.ticket-main span { position: relative; z-index: 1; font-size: 13px; background: #f7f2e7; padding: 3px 7px; }
.ticket-main strong { position: relative; z-index: 1; display: block; font-size: 28px; margin-top: 10px; }
.ticket-main i { position: absolute; right: 12px; bottom: -12px; font: normal 80px Georgia, serif; color: #f7f2e7; }
.ticket-foot { display: flex; align-items: center; gap: 12px; padding: 11px 14px; font-size: 11px; color: #555; }
.ticket-foot b { width: 46px; height: 13px; margin-left: auto; background: repeating-linear-gradient(90deg, #666 0 1px, transparent 1px 3px); }
.product { padding: 20px 5px 5px; flex: 1; display: flex; flex-direction: column; }
.availability { color: #28623f; font-size: 12px; font-weight: 600; display: inline-block; margin-bottom: 9px; }
.availability.is-paused { color: var(--muted); }
.product h2 { font-size: 20px; margin-bottom: 8px; }
.product-summary { font-size: 13px; margin-bottom: 20px; }
.price { font-size: 29px; line-height: 1.35; font-weight: 750; font-variant-numeric: tabular-nums; }
.price small { font-size: 13px; font-weight: 400; }
.price-label { display: block; color: var(--muted); font-size: 11px; font-weight: 400; margin-bottom: 5px; }
.product .price { margin: auto 0 20px; padding-top: 8px; }
.button { display: flex; align-items: center; justify-content: space-between; gap: 14px; min-height: 46px; padding: 10px 18px; border: 1px solid var(--accent); color: var(--accent); background: white; border-radius: 24px; text-decoration: none; font-weight: 600; }
.button:hover { background: #edf1ff; }
.home-bottom { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; padding-block: 64px; align-items: start; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; padding-block: 16px; font-weight: 600; }
.faq details p { font-size: 14px; color: var(--muted); }
.contact-panel { min-width: 0; padding: 26px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; scroll-margin-top: 24px; }
.contact-panel h2 { margin-bottom: 10px; }
.contact-panel > p { font-size: 14px; color: var(--muted); }
.contact-row { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 12px; padding-block: 17px; border-bottom: 1px solid var(--line); }
.contact-row > strong { font-size: 13px; flex: 0 0 100%; }
.contact-row > .muted { font-size: 14px; }
.contact-value { overflow-wrap: anywhere; min-width: 0; color: var(--accent); font-size: 15px; }
.copy-button { border: 1px solid var(--line); border-radius: 6px; padding: 7px 12px; background: white; cursor: pointer; margin-left: auto; font-size: 12px; }
.copy-button:hover { border-color: var(--accent); color: var(--accent); }
.contact-panel .contact-note { font-size: 12px; margin-top: 18px; margin-bottom: 0; }
.copy-status:empty { display: none; }
.contact-panel .copy-status { color: var(--ink); margin-top: 12px; margin-bottom: 0; font-size: 12px; }
.breadcrumb { display: flex; gap: 10px; flex-wrap: wrap; padding-block: 28px; color: var(--muted); font-size: 13px; }
.breadcrumb a { color: var(--ink); }
.detail-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 64px; padding-block: 16px 64px; align-items: start; }
.detail-layout > .contact-panel { position: sticky; top: 24px; }
.detail-heading h1 { font-size: clamp(30px, 4vw, 44px); overflow-wrap: anywhere; margin-bottom: 14px; }
.detail-heading > p:not(.price) { color: var(--muted); }
.detail-heading .price { margin-block: 24px; font-size: 38px; }
.detail-contact-link { width: fit-content; min-width: 156px; margin-top: 20px; }
.stock-note { border-left: 3px solid var(--accent); padding-left: 12px; color: var(--muted); font-size: 13px; }
.specs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-block: 30px; padding-block: 22px; border-block: 1px solid var(--line); }
.specs dt { font-size: 12px; }
.specs dd { margin: 6px 0 0; font-weight: 600; font-size: 14px; }
.detail-section { margin-top: 32px; scroll-margin-top: 24px; }
.detail-section h2 { font-size: 20px; }
.detail-section p, .detail-section li { color: #505050; font-size: 14px; }
.detail-section li { padding-block: 5px; }
.detail-steps { padding-left: 24px; }
.detail-steps li { padding-left: 8px; }
.detail-steps strong { color: var(--ink); }
.detail-steps p { margin-top: 6px; }
.text-link { color: var(--accent); font-size: 14px; }
.guide-heading { padding-top: 36px; }
.guide-heading h1 { margin-top: 24px; margin-bottom: 14px; }
.guide-heading p { color: var(--muted); }
.guide-content .detail-section:first-child { margin-top: 0; }
.site-footer { border-top: 1px solid var(--line); padding-block: 24px; display: flex; gap: 20px; align-items: center; font-size: 12px; color: var(--muted); }
.footer-brand { font-size: 18px; font-weight: 750; text-decoration: none; color: var(--ink); }
.site-footer > a:last-child { margin-left: auto; }

/* Product details: a printed account ticket beside the purchase information. */
.product-hero { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr); align-items: start; gap: 56px; padding-block: 10px 48px; }
.product-visual { margin: 0; min-width: 0; --poster-paper: #eaa06d; --poster-ink: #372315; --poster-petal: #fff2dc; --poster-back: #b7633a; --poster-stage: #f0ece5; }
.theme-pro { --poster-paper: #b6cddc; --poster-ink: #18394a; --poster-petal: #eef7fc; --poster-back: #7096ac; --poster-stage: #edf0f2; }
.theme-bulk { --poster-paper: #9eafbc; --poster-ink: #203342; --poster-petal: #eaf0f5; --poster-back: #5a758b; --poster-stage: #e9edef; }
.theme-ultra { --poster-paper: #a8a0c9; --poster-ink: #30264f; --poster-petal: #efebff; --poster-back: #786492; --poster-stage: #efedf3; }
.theme-warranty { --poster-paper: #acbeb0; --poster-ink: #213e33; --poster-petal: #edf5e6; --poster-back: #647f70; --poster-stage: #edf0eb; }
.poster-stage { aspect-ratio: .97; position: relative; overflow: hidden; border-radius: 18px; background: var(--poster-stage); container-type: inline-size; display: grid; place-items: center; }
.poster-backing { position: absolute; inset: 12% 11% 10%; background: var(--poster-back); transform: rotate(5deg); border-radius: 9px; opacity: .7; }
.product-poster { width: 80%; height: 82%; transform: rotate(-4deg); position: relative; color: var(--poster-ink); border-radius: 10px; box-shadow: 6px 18px 28px -15px #30271b55; }
.poster-face { height: 78%; position: relative; overflow: hidden; padding: 6%; border-radius: 10px 10px 0 0; background-color: var(--poster-paper); background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='grain'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' opacity='.12' filter='url(%23grain)'/%3E%3C/svg%3E"); }
.poster-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; position: relative; z-index: 1; font-size: clamp(10px, 2.4cqw, 14px); }
.poster-brand { font-weight: 750; font-size: 1.15em; letter-spacing: -.03em; }
.poster-title { margin-top: 11%; position: relative; z-index: 1; width: fit-content; }
.poster-title > span:first-child { display: block; font: 400 7.5cqw/1.1 Georgia, "Times New Roman", serif; letter-spacing: -.045em; }
.poster-title strong { display: block; font: 500 17cqw/.95 Georgia, "Times New Roman", serif; letter-spacing: -.065em; margin-top: 3%; }
.poster-bulk { position: absolute; left: calc(100% + 10px); bottom: 5%; white-space: nowrap; font-size: 4.5cqw; letter-spacing: -.05em; }
.poster-bloom { position: absolute; width: 46%; height: auto; right: 1%; bottom: 0; transform: rotate(10deg); fill: var(--poster-petal); }
.poster-bloom circle { fill: var(--poster-paper); }
.poster-caption { position: absolute; bottom: 6%; left: 6%; z-index: 1; display: flex; gap: 8px; align-items: center; font-size: clamp(10px, 2.2cqw, 13px); }
.poster-caption > span:first-child { padding: 3px 8px; border: 1px solid currentColor; border-radius: 3px; font-weight: 650; }
.poster-stub { height: 22%; display: flex; align-items: center; gap: 5%; padding: 4% 6%; background: #faf7ef; border-radius: 0 0 10px 10px; border-top: 1.5px dashed color-mix(in srgb, var(--poster-ink) 35%, transparent); font-size: clamp(10px, 2.2cqw, 13px); position: relative; }
.poster-stub::before, .poster-stub::after { content: ""; width: 16px; height: 16px; position: absolute; top: -9px; border-radius: 50%; background: var(--poster-stage); }
.poster-stub::before { left: -8px; }
.poster-stub::after { right: -8px; }
.poster-stub b { font-weight: 600; }
.poster-barcode { display: block; width: 25%; height: 42%; margin-left: auto; opacity: .8; background: repeating-linear-gradient(90deg, currentColor 0 1px, transparent 1px 3px, currentColor 3px 6px, transparent 6px 8px, currentColor 8px 9px, transparent 9px 12px); }
.poster-stub-name { writing-mode: vertical-rl; font-size: 10px; }
.product-visual figcaption { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 14px; padding-top: 14px; font-size: 11px; color: var(--muted); }
.product-purchase { min-width: 0; padding-top: 5px; }
.product-purchase .availability { display: inline-flex; align-items: center; gap: 7px; margin-bottom: 12px; }
.availability-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.product-purchase .detail-heading h1 { font-size: clamp(28px, 3vw, 38px); margin-bottom: 10px; letter-spacing: -.04em; }
.product-purchase .detail-heading > p:not(.price) { font-size: 14px; margin-bottom: 0; }
.product-purchase .detail-heading .price { font-size: 40px; margin-block: 22px; }
.product-purchase .specs { margin-block: 0 18px; padding-block: 16px; gap: 12px; }
.product-purchase .stock-note { border-left: 0; border-radius: 6px; padding: 10px 12px; background: #eeeee9; font-size: 12px; margin-bottom: 22px; }
.product-purchase .contact-panel { padding: 0; border: 0; background: transparent; border-radius: 0; }
.product-purchase .contact-panel h2 { font-size: 18px; margin-bottom: 4px; }
.product-purchase .contact-panel > p { font-size: 12px; margin-bottom: 12px; }
.product-purchase .contact-list { border: 1px solid var(--line); border-radius: 12px; background: white; overflow: hidden; }
.product-purchase .contact-row { padding: 13px 15px; flex-wrap: nowrap; gap: 12px; min-height: 56px; }
.product-purchase .contact-row:last-child { border-bottom: 0; }
.product-purchase .contact-row > strong { flex: 0 0 65px; font-size: 12px; }
.product-purchase .contact-value { font-size: 14px; }
.product-purchase .copy-button { flex-shrink: 0; padding: 5px 10px; }
.product-purchase .contact-panel .contact-note { margin-top: 12px; font-size: 11px; }
.product-information { display: grid; grid-template-columns: 1.08fr 1fr; gap: 56px; padding-block: 34px 48px; border-top: 1px solid var(--line); }
.product-information h2 { font-size: 20px; margin-bottom: 16px; }
.product-information p { font-size: 14px; color: var(--muted); line-height: 1.8; }
.after-sales { padding-top: 18px; margin-top: 24px; border-top: 1px solid var(--line); }
.after-sales summary { font-size: 14px; cursor: pointer; }
.after-sales p { margin-top: 14px; }
.delivery-steps { display: flex; flex-direction: column; gap: 18px; list-style: none; padding: 0; margin: 0; }
.delivery-steps li { display: flex; gap: 14px; position: relative; }
.delivery-steps li > span { display: grid; place-items: center; flex: 0 0 28px; height: 28px; border: 1px solid var(--line); border-radius: 50%; background: white; font-size: 12px; color: var(--accent); }
.delivery-steps li:not(:last-child)::after { content: ""; position: absolute; top: 34px; bottom: -12px; left: 14px; width: 1px; background: var(--line); }
.delivery-steps strong { font-size: 14px; font-weight: 600; }
.delivery-steps p { font-size: 12px; margin: 2px 0 0; }
/* Reading pages retain the shop's paper, blue ink and generous whitespace. */
.site-header nav { flex-wrap: wrap; }
.eyebrow, .doc-category { color: var(--accent); font-size: 12px; letter-spacing: .06em; }
.docs-heading { padding-block: 56px 36px; }
.docs-heading h1 { margin-block: 18px; }
.docs-heading > p { color: var(--muted); }
.docs-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.doc-card { padding: 30px; border: 1px solid var(--line); border-radius: 12px; background: white; }
.doc-card h2 { margin-block: 16px 12px; }
.doc-card h2 a { text-decoration: none; }
.doc-card h2 a:hover { color: var(--accent); }
.doc-card p { font-size: 14px; color: var(--muted); }
.doc-date, .article-meta { font-size: 12px; color: var(--muted); }
.article-layout { display: grid; grid-template-columns: minmax(0, 760px) minmax(0, 240px); gap: 64px; align-items: start; padding-block: 12px 32px; }
.editorial { min-width: 0; }
.editorial h1 { font-size: clamp(28px, 3.5vw, 42px); margin-block: 14px 20px; line-height: 1.35; }
.editorial h2 { font-size: 24px; margin-bottom: 20px; }
.editorial section { margin-top: 40px; scroll-margin-top: 24px; }
.editorial p, .editorial li { line-height: 1.95; color: #414141; }
.editorial p { max-width: none; }
.editorial li { margin-bottom: 12px; }
.editorial a { color: var(--accent); }
.editorial blockquote { margin: 24px 0; padding: 20px 24px; border-left: 3px solid var(--accent); background: #f0f2f8; line-height: 1.95; }
.answer-summary { padding: 24px; border: 1px solid #d8dff6; background: #eef2ff; border-radius: 10px; margin-top: 28px; }
.answer-summary strong { font-size: 13px; color: var(--accent); }
.answer-summary p { margin: 8px 0 0; }
.article-toc { position: sticky; top: 32px; padding-left: 24px; border-left: 1px solid var(--line); }
.article-toc h2 { font-size: 14px; }
.article-toc ol { padding-left: 20px; font-size: 13px; }
.article-toc li { padding-block: 7px; }
.article-toc a:not(.button) { text-decoration: none; color: var(--muted); }
.article-toc a:hover { color: var(--accent); }
.article-toc .button { margin-top: 28px; font-size: 13px; padding-inline: 12px; }
.article-toc p { font-size: 12px; color: var(--muted); margin-top: 12px; }
.article-sources { border-top: 1px solid var(--line); padding-top: 24px; font-size: 13px; }
.article-contact { max-width: 760px; margin-bottom: 56px; }
.reading-strip { padding-block: 28px 40px; border-top: 1px solid var(--line); }
.reading-strip h2 { font-size: 20px; }
.reading-strip p { color: var(--muted); font-size: 14px; }
.reading-links { display: grid; gap: 14px; }
.reading-links a { color: var(--accent); font-size: 14px; }
.table-scroll { max-width: 100%; overflow-x: auto; }
.editorial table { width: 100%; border-collapse: collapse; font-size: 14px; }
.editorial caption { text-align: left; color: var(--muted); margin-bottom: 12px; }
.editorial th, .editorial td { padding: 14px; text-align: left; vertical-align: top; border: 1px solid var(--line); }
.editorial thead { background: #eeeee9; }
.editorial tbody th { width: 35%; font-weight: 500; }
@media (max-width: 960px) {
  .article-layout { grid-template-columns: minmax(0, 1fr) 200px; gap: 28px; }
  .site-header nav { gap: 18px; }
}
@media (max-width: 720px) {
  .docs-grid, .article-layout { grid-template-columns: minmax(0, 1fr); }
  .docs-heading { padding-top: 32px; }
  .doc-card { padding: 24px; }
  .article-toc { position: static; grid-row: 1; border-left: 0; border-bottom: 1px solid var(--line); padding: 0 0 20px; }
  .article-toc ol { margin-bottom: 0; }
  .article-toc .button, .article-toc > p { display: none; }
  .article-toc li { padding-block: 3px; }
  .answer-summary { padding: 20px; }
  .editorial h2 { font-size: 22px; }
}
@media (max-width: 960px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog-intro { align-items: start; flex-direction: column; }
  .purchase-flow { gap: 40px; }
  .detail-layout { gap: 28px; grid-template-columns: minmax(0, 1fr) 300px; }
  .home-bottom { gap: 28px; }
  .product-hero, .product-information { gap: 32px; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .product-purchase .contact-row { gap: 8px; padding-inline: 12px; }
  .product-purchase .contact-row > strong { flex-basis: 58px; }
}
@media (max-width: 720px) {
  .site-header, main, .site-footer { padding-inline: 20px; }
  .site-header { flex-wrap: wrap; gap: 8px; padding-block: 16px; }
  .site-header nav { gap: 20px; font-size: 14px; }
  .detail-layout, .home-bottom { grid-template-columns: 1fr; gap: 32px; }
  .detail-layout > .contact-panel { position: static; }
  .home-bottom { padding-block: 40px; }
  .product-hero, .product-information { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .product-hero { padding-top: 0; padding-bottom: 32px; }
  .product-visual { max-width: 520px; width: 100%; margin-inline: auto; }
  .poster-stage { aspect-ratio: 1.15; }
  .poster-title { margin-top: 7%; }
  .poster-title strong { font-size: 15cqw; }
  .poster-title > span:first-child { font-size: 6cqw; }
  .poster-caption { font-size: 10px; }
  .poster-bloom { width: 39%; }
  .product-information { padding-block: 28px 36px; }
}
@media (max-width: 480px) {
  .site-header { align-items: start; flex-direction: column; }
  .catalog-intro { padding-top: 32px; }
  .grid { grid-template-columns: 1fr; }
  .ticket-main { min-height: 128px; }
  .specs { gap: 12px; }
  .contact-panel { padding: 22px; }
  .site-footer { flex-wrap: wrap; gap: 10px 20px; }
}