* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
body { margin: 0; color: var(--ink); background: var(--paper); font: 17px/1.7 var(--body-font); -webkit-font-smoothing: antialiased; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; color: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }
button, a { touch-action: manipulation; }
button:focus-visible, a:focus-visible { outline: 3px solid var(--accent-dark); outline-offset: 5px; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-family: var(--display-font); font-weight: 750; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link { position: fixed; top: -100px; left: 20px; z-index: 10; padding: 12px; background: white; }
.skip-link:focus { top: 12px; }
.topbar { background: var(--paper); border-top: 5px solid var(--accent); border-bottom: 1px solid var(--line); }
.header-inner, .site-shell, .footer-inner { max-width: 1240px; margin: 0 auto; padding: 0 40px; }
.header-inner { min-height: 96px; display: flex; align-items: center; gap: 32px; }
.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; flex-shrink: 0; }
.brand-mark { background: var(--accent); color: #fff; width: 48px; height: 48px; display: grid; place-items: center; border-radius: 12px 12px 12px 3px; font-size: 28px; font-weight: 800; }
.brand strong { display: block; font-size: 22px; line-height: 1.3; font-weight: 750; }
.brand small { font-size: 14px; color: var(--muted); letter-spacing: .14em; }
.main-nav { display: flex; align-items: center; gap: 32px; font-weight: 650; }
.main-nav a { padding: 12px 0; }
.main-nav a:hover { color: var(--accent-dark); }
.contact-button { border: 1px solid #a9d3c6; border-radius: 6px; background: transparent; color: var(--accent-dark); padding: 9px 15px; font-size: 15px; font-weight: 650; }
.contact-button:hover { background: var(--accent-soft); }
.board-tabs { display: flex; gap: 25px; overflow-x: auto; border-bottom: 1px solid var(--line); scrollbar-width: thin; scrollbar-color: #a9d3c6 transparent; }
.board-tab { flex-shrink: 0; padding: 12px 0 17px; font-size: 19px; font-weight: 700; background: transparent; border: 0; border-bottom: 3px solid transparent; white-space: nowrap; }
.board-tab.is-active { color: var(--accent-dark); border-bottom-color: var(--accent); }
.board-tab:hover, .story-tab:hover { color: var(--accent-dark); }
.case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 26px; }
.case-card { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; transition: border-color .15s, box-shadow .15s; }
.case-card:hover { border-color: #83bfad; box-shadow: 0 4px 16px #173d370b; }
.card-link { height: 100%; display: flex; flex-direction: column; padding: 24px; }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.platform-tag { color: var(--accent-dark); font-size: 15px; font-weight: 650; }
.card-date { color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; }
.case-card h3 { font-size: 21px; line-height: 1.55; letter-spacing: -.015em; }
.case-summary { font-size: 16px; line-height: 1.85; color: var(--muted); margin: 13px 0 24px; }
.card-bottom { display: flex; gap: 10px; align-items: center; justify-content: space-between; margin-top: auto; }
.card-tags { display: flex; gap: 10px; flex-wrap: wrap; color: var(--muted); font-size: 14px; }
.card-open { color: var(--accent-dark); font-size: 24px; line-height: 1; }
.more-button { display: block; padding: 10px 30px; margin: 28px auto 0; border: 1px solid var(--line); border-radius: 6px; background: transparent; color: var(--accent-dark); font-size: 16px; font-weight: 650; }
.more-button:hover { background: var(--accent-soft); }
.empty-state { padding: 55px 20px; text-align: center; color: var(--muted); }
.shengcai-section { margin: 64px 0 56px; padding-top: 35px; border-top: 2px solid #94cbbb; }
.shengcai-section h2 { font-size: 32px; letter-spacing: -.03em; margin-bottom: 22px; }
.story-tabs { display: flex; gap: 30px; overflow-x: auto; border-bottom: 1px solid var(--line); scrollbar-width: thin; }
.story-tab { background: none; border: 0; border-bottom: 3px solid transparent; padding: 0 0 14px; white-space: nowrap; font-size: 18px; font-weight: 650; }
.story-tab.is-active { color: var(--accent-dark); border-bottom-color: var(--accent); }
.story-panel { padding: 30px 0 0; min-height: 190px; }
.article-link { display: flex; justify-content: space-between; align-items: center; gap: 20px; background: white; border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: 6px; padding: 22px 26px; font-size: 21px; font-weight: 700; max-width: 720px; }
.article-link:hover { border-color: var(--accent); }
.article-link span:last-child { color: var(--accent-dark); }
.story-note { margin-top: 16px; color: var(--muted); font-size: 16px; }
.story-empty { color: var(--muted); padding: 22px 0; }
.trial-box h3 { font-size: 24px; margin-bottom: 8px; }
.trial-box p { color: var(--muted); margin-bottom: 18px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 20px; border: 1px solid var(--accent-dark); background: var(--accent-dark); color: white; border-radius: 6px; padding: 11px 22px; font-size: 17px; font-weight: 650; }
.button:hover { background: #105e4f; }
.button:disabled { background: #dce8e3; color: #61756e; border-color: #dce8e3; cursor: default; }
.footer { background: #e7f3ef; border-top: 1px solid var(--line); }
.footer-inner { padding-top: 30px; padding-bottom: 30px; display: flex; gap: 20px; align-items: center; justify-content: space-between; }
.footer strong { font-size: 19px; }
.footer p { font-size: 15px; color: var(--muted); margin-top: 7px; }
.footer-divider { margin: 0 12px; color: #90aca2; }
.preview-note { font-size: 14px; color: var(--muted); white-space: nowrap; }
dialog { color: var(--ink); border: 1px solid var(--line); border-radius: 12px; padding: 0; background: var(--paper); max-height: calc(100dvh - 40px); }
dialog::backdrop { background: #102e29a6; }
body:has(dialog[open]) { overflow: hidden; }
.detail-dialog { width: min(760px, calc(100% - 32px)); }
.dialog-close { position: sticky; float: right; top: 14px; margin: 12px 14px 0 0; width: 44px; height: 44px; border: 1px solid var(--line); background: var(--paper); border-radius: 50%; font-size: 28px; line-height: 1; z-index: 1; }
.detail-content { padding: 45px 44px 36px; }
.detail-kicker { padding-right: 40px; }
.detail-content h2 { font-size: 32px; line-height: 1.5; margin: 17px 0; }
.detail-lead { font-size: 18px; color: var(--muted); line-height: 1.9; }
.detail-byline { font-size: 15px; color: var(--muted); margin: -4px 0 20px; }
.detail-source { border-top: 1px solid var(--line); margin-top: 28px; padding-top: 20px; color: var(--muted); font-size: 15px; overflow-wrap: anywhere; }
.detail-source a { display: block; color: var(--accent-dark); margin-top: 10px; text-decoration: underline; text-underline-offset: 4px; }
.detail-source .detail-footnote { font-size: 15px; margin-top: 14px; }
.detail-section { margin-top: 28px; }
.detail-section h3 { font-size: 21px; margin-bottom: 12px; }
.detail-section ol { padding-left: 24px; margin: 0; }
.detail-section li { padding-left: 6px; margin: 10px 0; }
.detail-cta { background: var(--accent-soft); border-radius: 8px; margin-top: 30px; padding: 24px; }
.detail-cta h3 { margin-bottom: 8px; font-size: 21px; }
.detail-cta p { color: #3b685a; font-size: 16px; margin-bottom: 18px; }
.detail-footnote { color: var(--muted); font-size: 14px; margin-top: 20px; }
.contact-dialog { width: min(390px, calc(100% - 32px)); padding: 34px 26px; text-align: center; }
.contact-dialog .dialog-close { margin: -22px -14px 0 0; }
.contact-dialog h2 { font-size: 25px; margin: 20px 0; }
.contact-dialog p { color: var(--muted); font-size: 16px; }
.contact-image { display: block; width: 100%; max-width: 240px; margin: 0 auto 16px; }
@media (min-width: 1100px) { .board-tabs { justify-content: space-between; } }
@media (max-width: 1000px) {
  .header-inner, .site-shell, .footer-inner { padding-left: 28px; padding-right: 28px; }
  .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .main-nav { gap: 24px; }
}
@media (max-width: 620px) {
  html { scroll-padding-top: 18px; }
  .header-inner, .site-shell, .footer-inner { padding-left: 20px; padding-right: 20px; }
  .header-inner { display: grid; grid-template-columns: 1fr auto; gap: 6px 16px; padding-top: 16px; padding-bottom: 0; }
  .brand-mark { width: 40px; height: 40px; font-size: 24px; }
  .brand strong { font-size: 20px; }
  .brand small { font-size: 13px; }
  .contact-button { grid-column: 2; grid-row: 1; padding: 8px 11px; font-size: 14px; }
  .main-nav { grid-column: 1 / -1; justify-content: space-between; font-size: 16px; gap: 24px; }
  .main-nav a { padding: 13px 0; }
  .board-tabs { gap: 24px; }
  .board-tab { font-size: 18px; padding-top: 10px; padding-bottom: 13px; }
  .case-grid { grid-template-columns: 1fr; margin-top: 20px; gap: 16px; }
  .card-link { padding: 22px; }
  .case-card h3 { font-size: 22px; }
  .case-summary { margin-bottom: 20px; }
  .shengcai-section { margin-top: 44px; margin-bottom: 35px; padding-top: 26px; }
  .shengcai-section h2 { font-size: 28px; margin-bottom: 20px; }
  .story-tabs { gap: 24px; }
  .story-tab { font-size: 17px; }
  .story-panel { min-height: 200px; padding-top: 22px; }
  .article-link { font-size: 19px; padding: 20px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; padding-top: 25px; padding-bottom: 25px; }
  .footer-divider { display: none; }
  .footer p > span:last-child { display: block; }
  .detail-content { padding: 32px 24px 26px; }
  .detail-content h2 { font-size: 26px; }
  .detail-lead { font-size: 17px; }
  .detail-cta { padding: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Biography and portrait belong to the same opening section. */
.topbar { border-top: 0; background: var(--surface); }
.header-inner, .site-shell, .footer-inner { max-width: 1280px; }
.header-inner { min-height: 94px; }
.brand-mark { background: var(--accent-dark); border-radius: 50%; }
.contact-button { border-radius: 100px; padding: 10px 20px; }
.hero { display: grid; grid-template-columns: .78fr 1.22fr; align-items: center; gap: 58px; padding: 44px 0 56px; }
.hero-portrait { margin: 0; padding: 12px; background: white; border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 14px 38px #173d3709; }
.portrait-frame { aspect-ratio: 4 / 5; background: var(--accent-soft); overflow: hidden; border-radius: 10px; }
.hero-photo { display: block; width: 100%; height: 100%; object-fit: cover; }
.hero-portrait figcaption { color: var(--muted); font-size: 14px; margin: 14px 0 4px; text-align: center; }
.hero-copy { min-width: 0; }
.hero-eyebrow { font-size: 15px; color: var(--accent-dark); font-weight: 700; margin-bottom: 12px; letter-spacing: .08em; }
.hero h1 { font-size: clamp(32px, 3.4vw, 46px); font-weight: 800; line-height: 1.3; letter-spacing: -.04em; }
.hero-name { color: var(--accent-dark); }
.name-period { color: var(--accent); }
.identity-tags { list-style: none; padding: 0; margin: 20px 0 24px; display: flex; flex-wrap: wrap; gap: 9px; }
.identity-tags li { font-size: 14px; font-weight: 550; line-height: 1.7; background: var(--accent-soft); padding: 6px 10px; border-radius: 5px; }
.identity-tags strong { font-weight: 800; color: var(--accent-dark); }
.hero-bio { font-size: 17px; line-height: 1.95; color: #4d645e; }
.hero-bio p + p { margin-top: 12px; }
.hero-bio strong { color: var(--accent-dark); font-weight: 750; }
.button { border-radius: 100px; padding: 13px 26px; }
.card-open { display: inline-block; transition: transform .2s ease; }
.card-link:hover .card-open { transform: translate(3px,-2px); }
.button, .contact-button, .case-card { transition: transform .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease; }
@media (hover: hover) { .button:hover, .contact-button:hover { transform: translateY(-2px); }.case-card:hover { transform: translateY(-3px); box-shadow: 0 10px 24px #173d3709; } }
.board-tabs { border-bottom: 1px solid var(--line); gap: 26px; }
.board-tab { font-size: 18px; padding-bottom: 20px; }
.case-grid { gap: 22px; margin-top: 32px; }
.case-card { --card-tint: #edf6f1; --card-accent: #297967; --card-edge: #bcdccd; border-radius: 12px; background: linear-gradient(155deg,var(--card-tint),white 72%); border-color: var(--card-edge); border-top: 3px solid var(--card-edge); }
.case-card[data-category="xiaohongshu"] { --card-tint: #faeeee; --card-accent: #a34e53; --card-edge: #e8c7ca; }
.case-card[data-category="tips"] { --card-tint: #edf3f8; --card-accent: #426985; --card-edge: #c4d7e5; }
.case-card[data-category="video"], .case-card[data-category="douyin"] { --card-tint: #fbf1e4; --card-accent: #896139; --card-edge: #e7d2b3; }
.case-card:hover { border-color: var(--card-accent); }
.card-link { padding: 26px; }
.case-card .platform-tag { color: var(--card-accent); background: var(--card-tint); }
.platform-tag { background: var(--accent-soft); padding: 4px 9px; border-radius: 4px; font-size: 14px; }
.case-card .card-open { color: var(--card-accent); }
.card-date, .card-tags { font-size: 15px; }
.case-card h3 { font-size: 22px; line-height: 1.6; }
.case-summary { font-size: 17px; line-height: 1.85; }
.more-button { border-radius: 100px; min-height: 46px; }
.shengcai-section { margin: 70px 0 60px; padding-top: 34px; border-top: 1px solid var(--line); }
.shengcai-section h2 { font-size: 36px; margin-bottom: 26px; }
.story-panel { padding-top: 32px; }
.community-articles { border-top: 1px solid var(--line); }
.community-article { border-bottom: 1px solid var(--line); }
.community-article a { display: grid; grid-template-columns: 120px minmax(0,1fr) auto; align-items: center; gap: 28px; padding: 24px 16px; }
.community-article a:hover { background: var(--accent-soft); }
.article-type { font-size: 15px; font-weight: 650; color: var(--accent-dark); }
.article-copy { min-width: 0; }
.community-article h3 { font-size: 21px; line-height: 1.6; overflow-wrap: anywhere; }
.community-article p { font-size: 15px; color: var(--muted); margin-top: 5px; overflow-wrap: anywhere; }
.article-read { display: flex; align-items: center; gap: 12px; color: var(--accent-dark); font-size: 15px; font-weight: 650; white-space: nowrap; }
.timeline-empty { border-left: 2px solid var(--line); padding: 16px 24px; color: var(--muted); }
.community-timeline { list-style: none; padding: 0 0 0 24px; margin: 0 0 0 8px; border-left: 2px solid var(--line); max-width: 920px; }
.community-timeline li { position: relative; display: grid; grid-template-columns: 140px 1fr; gap: 28px; padding: 0 0 34px; }
.community-timeline li::before { content: ""; position: absolute; left: -31px; top: 8px; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); border: 3px solid var(--paper); }
.community-timeline time { font-size: 16px; color: var(--accent-dark); font-variant-numeric: tabular-nums; }
.community-timeline h3 { font-size: 21px; margin-bottom: 8px; }
.community-timeline p { color: var(--muted); }
.community-timeline a { display: inline-block; color: var(--accent-dark); margin-top: 12px; text-decoration: underline; text-underline-offset: 4px; }
.community-trial { display: flex; align-items: center; gap: 48px; }
.trial-poster-button { padding: 0; border: 0; border-radius: 12px; background: var(--accent-soft); max-width: 300px; overflow: hidden; cursor: zoom-in; }
.trial-poster { display: block; width: 100%; height: auto; }
.community-trial-copy { max-width: 390px; }
.community-trial-copy h3 { font-size: 28px; margin-bottom: 16px; }
.community-trial-copy p { color: var(--muted); font-size: 17px; margin-bottom: 24px; line-height: 1.9; }
.trial-dialog { width: min(500px,calc(100% - 24px)); padding: 20px; background: white; }
.trial-dialog-header { display: flex; align-items: center; justify-content: space-between; gap: 14px; position: sticky; top: -20px; padding: 10px 0; background: white; }
.trial-dialog-header h2 { font-size: 23px; }
.trial-close { padding: 9px 14px; min-height: 44px; border: 0; border-radius: 8px; background: var(--accent-soft); color: var(--accent-dark); }
.trial-dialog p { font-size: 16px; color: var(--muted); margin: 10px 0 18px; }
.trial-dialog .trial-poster { user-select: auto; -webkit-touch-callout: default; }
.trial-save { display: block; padding: 12px; margin-top: 16px; text-align: center; background: var(--accent-soft); border-radius: 50px; color: var(--accent-dark); font-weight: 700; }
.footer { background: var(--ink); color: white; border: 0; }
.footer p, .footer .preview-note { color: #c2d7ce; }
@media (max-width: 1000px) {
 .hero { gap: 32px; grid-template-columns: .75fr 1.25fr; padding: 36px 0 48px; }
 .hero h1 { font-size: 34px; }.identity-tags { gap: 7px; }.identity-tags li { font-size: 13px; }
}
@media (max-width: 700px) {
 .hero { display: flex; flex-direction: column; gap: 28px; padding: 28px 0 40px; }
 .hero-portrait { width: min(100%,330px); padding: 9px; border-radius: 14px; }
 .hero-copy { width: 100%; }.hero h1 { font-size: 34px; }.hero-eyebrow { font-size: 14px; }
 .identity-tags { margin: 18px 0 22px; }.identity-tags li { font-size: 14px; }
 .hero-bio { font-size: 17px; line-height: 1.95; }
 .shengcai-section { margin: 48px 0; padding-top: 30px; }.shengcai-section h2 { font-size: 30px; margin-bottom: 24px; }
 .story-panel { padding-top: 26px; }.board-tabs { gap: 24px; }.board-tab { padding-bottom: 16px; }
 .card-link { padding: 24px; }.case-grid { margin-top: 24px; gap: 18px; }
 .community-article a { grid-template-columns: 1fr auto; gap: 12px; padding: 20px 4px; }
 .article-copy { grid-column: 1 / -1; grid-row: 2; }
 .article-read { grid-column: 2; grid-row: 1; font-size: 14px; gap: 6px; }
 .article-type { font-size: 14px; }.community-article h3 { font-size: 20px; }
 .community-trial { flex-direction: column; align-items: flex-start; gap: 26px; }.trial-poster-button { width: 100%; max-width: 300px; align-self: center; }
 .community-trial-copy h3 { font-size: 25px; }.community-timeline li { grid-template-columns: 1fr; gap: 8px; }
}
@media (max-width: 380px) { .hero h1 { font-size: 30px; }.identity-tags li { font-size: 13px; } }

.home-directory { margin: 56px 0; padding: 32px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
.home-directory > p { color: var(--muted); line-height: 1.8; margin: 16px 0 24px; }
.home-directory-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 28px; margin-bottom: 24px; }
.home-directory h3, .home-directory > a { color: var(--accent-dark); }
.home-directory ul { padding-left: 20px; }
.home-directory li { margin: 12px 0; line-height: 1.7; }
.home-directory a:hover { text-decoration: underline; text-underline-offset: 4px; }
@media (max-width:720px) { .home-directory { padding: 24px 18px; } .home-directory-grid { grid-template-columns: 1fr; } }