:root {
  --paper: #fffdf8;
  --warm: #fff8ed;
  --ink: #4a2d20;
  --muted: #755c50;
  --terracotta: #d77a54;
  --blue: #6e9ca8;
  --line: #ead8c8;
  --shadow: 0 18px 50px rgba(93, 59, 40, .11);
  --serif: Georgia, "Songti SC", "STSong", "SimSun", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; background: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.8; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, summary { font: inherit; }
h1, h2, h3, p, figure, blockquote { margin-top: 0; }

.site-shell { position: relative; width: min(100%, 1120px); margin: 0 auto; padding: 0 28px 136px; }
.topbar { display: flex; align-items: center; justify-content: space-between; min-height: 96px; border-bottom: 1px solid var(--line); }
.brand-mark { display: inline-flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark img { width: 68px; height: 68px; flex: 0 0 auto; border-radius: 50%; object-fit: cover; }
.brand-copy { min-width: 0; }
.brand-copy strong { display: block; font-family: var(--serif); font-size: 22px; line-height: 1.2; letter-spacing: .04em; }
.brand-copy small { display: block; margin-top: 4px; color: var(--muted); font-size: 12px; letter-spacing: .08em; }
.site-menu { position: relative; }
.site-menu summary { min-height: 44px; padding: 8px 13px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); cursor: pointer; list-style: none; }
.site-menu summary::-webkit-details-marker { display: none; }
.site-menu nav { position: absolute; z-index: 20; top: 52px; right: 0; display: grid; min-width: 180px; padding: 8px; border: 1px solid var(--line); border-radius: 16px; background: var(--paper); box-shadow: var(--shadow); }
.site-menu nav a { min-height: 44px; padding: 8px 12px; border-radius: 10px; font-size: 14px; }
.site-menu nav a:hover, .site-menu nav a:focus-visible { background: var(--warm); }

.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(380px, .95fr); gap: 56px; align-items: center; padding: 68px 0 56px; }
.eyebrow, .section-kicker { margin-bottom: 13px; color: var(--terracotta); font-size: 12px; font-weight: 700; letter-spacing: .14em; }
h1 { max-width: 670px; margin-bottom: 22px; font-family: var(--serif); font-size: clamp(48px, 6.5vw, 78px); line-height: 1.08; letter-spacing: -.05em; }
h1 em { color: var(--terracotta); font-style: normal; }
.hero-intro { max-width: 580px; margin-bottom: 24px; color: var(--muted); font-size: 17px; line-height: 2; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-meta span { padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 12px; }
.hero-visual { position: relative; margin: 0; }
.hero-visual img { width: 100%; aspect-ratio: 4 / 3; border: 1px solid var(--line); border-radius: 2px 24px 2px 24px; object-fit: cover; box-shadow: var(--shadow); }
.hero-visual figcaption { width: calc(100% - 40px); margin: -18px auto 0; padding: 12px 16px; position: relative; background: var(--paper); border: 1px solid var(--line); color: var(--muted); font-family: var(--serif); font-size: 14px; text-align: center; }

.feature-section, .letters-section, .question-section, .doctor-section { margin-top: 52px; }
.section-heading { display: flex; justify-content: space-between; gap: 18px; align-items: end; margin-bottom: 22px; }
.section-heading.compact { margin-bottom: 12px; }
h2 { margin-bottom: 0; font-family: var(--serif); font-size: clamp(31px, 4vw, 46px); line-height: 1.18; letter-spacing: -.04em; }
.text-link { min-height: 44px; display: inline-flex; align-items: center; color: var(--terracotta); font-size: 13px; font-weight: 700; }
.section-count { color: var(--muted); font-family: var(--serif); font-size: 15px; }

.feature-card { display: grid; grid-template-columns: minmax(300px, .92fr) minmax(0, 1.08fr); overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: var(--warm); box-shadow: var(--shadow); transition: transform .24s ease, box-shadow .24s ease; }
.feature-card:hover, .feature-card:focus-visible { transform: translateY(-4px); box-shadow: 0 24px 58px rgba(93, 59, 40, .16); }
.feature-art { width: 100%; height: 100%; min-height: 390px; object-fit: cover; }
.feature-content { display: flex; flex-direction: column; justify-content: center; padding: clamp(30px, 5vw, 62px); }
.tag-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 11px; }
.tag { display: inline-flex; align-items: center; min-height: 28px; padding: 2px 10px; border: 1px solid var(--line); border-radius: 999px; white-space: nowrap; }
.tag-warm { border-color: rgba(215, 122, 84, .48); color: #b85838; background: var(--paper); }
.feature-content h3 { max-width: 520px; margin: 20px 0 15px; font-family: var(--serif); font-size: clamp(31px, 4vw, 50px); line-height: 1.14; letter-spacing: -.04em; }
.feature-content p { max-width: 520px; margin-bottom: 24px; color: var(--muted); font-size: 16px; line-height: 1.9; }
.read-cta { align-self: flex-start; display: inline-flex; align-items: center; min-height: 46px; padding: 9px 18px; border-radius: 12px; background: var(--terracotta); color: #fff; font-size: 14px; font-weight: 800; }

.letter-list { border-top: 1px solid var(--line); }
.letters-more { margin: 24px 0 0; text-align: right; }
.letter-card { display: grid; grid-template-columns: 184px minmax(0, 1fr); gap: 22px; align-items: center; min-height: 166px; padding: 18px 0; border-bottom: 1px solid var(--line); transition: background .2s ease, padding .2s ease; }
.letter-card:hover, .letter-card:focus-visible { padding-right: 10px; padding-left: 10px; background: var(--warm); }
.letter-card > img { width: 184px; height: 124px; border-radius: 14px; object-fit: cover; }
.letter-body { min-width: 0; }
.letter-body .tag-row { justify-content: flex-start; }
.date { margin-left: auto; }
.letter-body h3 { margin: 12px 0 7px; font-family: var(--serif); font-size: clamp(23px, 3vw, 31px); line-height: 1.28; }
.letter-body p { max-width: 690px; margin-bottom: 0; color: var(--muted); font-size: 14px; }

.question-section { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: center; padding: 46px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.question-copy p:last-child { max-width: 340px; margin: 14px 0 0; color: var(--muted); }
.question-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.question-grid a { min-height: 98px; padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--warm); transition: transform .2s ease, border-color .2s ease; }
.question-grid a:hover, .question-grid a:focus-visible { transform: translateY(-2px); border-color: var(--terracotta); }
.question-grid span { display: block; color: var(--muted); font-size: 13px; }
.question-grid strong { display: block; margin-top: 4px; font-family: var(--serif); font-size: 20px; }

.doctor-section { display: grid; grid-template-columns: 164px minmax(0, 1fr); gap: 34px; align-items: center; padding: 30px; border: 1px solid var(--line); border-radius: 18px; background: var(--warm); }
.doctor-portrait { width: 164px; height: 164px; border-radius: 50%; border: 6px solid var(--paper); object-fit: cover; object-position: center 18%; box-shadow: 0 12px 34px rgba(93, 59, 40, .13); }
.doctor-copy h2 { font-size: 38px; }
.doctor-title { margin: 8px 0; color: var(--muted); font-size: 14px; }
.doctor-bio { max-width: 720px; margin: 14px 0 0; font-size: 15px; }
.site-footer { display: flex; justify-content: space-between; gap: 18px; padding-top: 42px; color: var(--muted); font-size: 12px; }

.inner-nav { display: flex; align-items: center; gap: 4px; }
.inner-nav a { min-height: 44px; padding: 8px 12px; border-radius: 999px; color: var(--muted); font-size: 13px; }
.inner-nav a:hover, .inner-nav a:focus-visible, .inner-nav a.is-current { color: var(--ink); background: var(--warm); }
.inner-hero { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr); gap: 56px; align-items: end; padding: 76px 0 54px; border-bottom: 1px solid var(--line); }
.inner-hero h1 { margin-bottom: 0; font-size: clamp(46px, 6.5vw, 74px); }
.inner-hero > p { max-width: 440px; margin-bottom: 8px; color: var(--muted); font-size: 16px; line-height: 2; }
.archive-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 26px 0 20px; }
.filter-row { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-row button { min-height: 42px; padding: 7px 14px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--muted); cursor: pointer; }
.filter-row button:hover, .filter-row button:focus-visible, .filter-row button.is-active { border-color: var(--terracotta); background: var(--warm); color: var(--ink); }
.archive-toolbar > span { flex: 0 0 auto; color: var(--muted); font-family: var(--serif); font-size: 14px; }
.archive-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.archive-card { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(300px, .9fr) minmax(0, 1.1fr); overflow: hidden; padding: 28px 0; border-bottom: 1px solid var(--line); }
.archive-card > img { width: 100%; height: 100%; min-height: 330px; max-height: 430px; object-fit: cover; border-radius: 2px 18px 2px 18px; }
.archive-card-body { display: flex; flex-direction: column; justify-content: center; padding: clamp(24px, 5vw, 58px); }
.archive-card h2 { margin: 18px 0 12px; font-size: clamp(31px, 4.5vw, 52px); }
.archive-card p { margin-bottom: 24px; color: var(--muted); line-height: 1.9; }
.archive-card-meta { display: flex; align-items: center; justify-content: space-between; gap: 16px; color: var(--muted); font-size: 12px; }
.archive-card-meta strong { color: var(--terracotta); font-size: 13px; }
.archive-card-compact { grid-column: auto; display: block; min-width: 0; }
.archive-card-compact:nth-child(even) { padding-right: 22px; border-right: 1px solid var(--line); }
.archive-card-compact:nth-child(odd) { padding-left: 22px; }
.archive-card-compact > img { height: 238px; min-height: 0; border-radius: 14px; }
.archive-card-compact .archive-card-body { padding: 22px 2px 4px; }
.archive-card-compact h2 { font-size: 29px; }
.archive-card-compact p { font-size: 14px; }
.archive-card:hover img, .archive-card:focus-visible img { filter: saturate(1.04); }
.archive-card:hover h2, .archive-card:focus-visible h2 { color: var(--terracotta); }
.archive-note { margin-top: 56px; padding: 38px clamp(24px, 5vw, 56px); border: 1px solid var(--line); border-radius: 2px 20px 2px 20px; background: var(--warm); }
.archive-note h2 { font-size: clamp(30px, 4vw, 42px); }
.archive-note > p:not(.section-kicker) { max-width: 720px; margin: 14px 0 10px; color: var(--muted); }

.profile-hero { display: grid; grid-template-columns: minmax(280px, .72fr) minmax(0, 1.28fr); gap: clamp(40px, 7vw, 86px); align-items: center; padding: 72px 0 66px; border-bottom: 1px solid var(--line); }
.profile-portrait { position: relative; margin: 0; }
.profile-portrait img { width: 100%; aspect-ratio: 4 / 5; border-radius: 2px 24px 2px 24px; object-fit: cover; object-position: center 15%; box-shadow: var(--shadow); }
.profile-portrait figcaption { position: absolute; right: -18px; bottom: 26px; padding: 11px 17px; border: 1px solid var(--line); background: var(--paper); color: var(--muted); font-family: var(--serif); }
.profile-intro h1 { font-size: clamp(48px, 6.5vw, 74px); }
.profile-intro > p:not(.eyebrow):not(.profile-role) { max-width: 650px; color: var(--muted); font-size: 17px; line-height: 2; }
.profile-role { margin-bottom: 18px; color: var(--ink); font-weight: 700; }
.primary-link { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; margin-top: 12px; padding: 10px 20px; border-radius: 12px; background: var(--terracotta); color: #fff; font-size: 14px; font-weight: 800; }
.primary-link:hover, .primary-link:focus-visible { background: #bf6542; }
.profile-values { padding: 66px 0; border-bottom: 1px solid var(--line); }
.value-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 30px; border-top: 1px solid var(--line); }
.value-list article { min-height: 260px; padding: 28px 28px 20px 0; border-right: 1px solid var(--line); }
.value-list article + article { padding-left: 28px; }
.value-list article:last-child { border-right: 0; }
.value-list span { color: var(--terracotta); font-family: var(--serif); font-size: 14px; }
.value-list h3 { margin: 46px 0 10px; font-family: var(--serif); font-size: 26px; line-height: 1.3; }
.value-list p { color: var(--muted); font-size: 14px; }
.expertise-section { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; padding: 66px 0; border-bottom: 1px solid var(--line); }
.expertise-section > div > p:last-child { max-width: 520px; margin-top: 16px; color: var(--muted); }
.expertise-section ul { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.expertise-section li { min-height: 58px; padding: 14px 2px; border-bottom: 1px solid var(--line); font-family: var(--serif); font-size: 19px; }
.contact-guide { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; padding: 66px 0; }
.contact-guide ol { margin: 0; padding: 0; list-style: none; }
.contact-guide li { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.contact-guide li:first-child { border-top: 1px solid var(--line); }
.contact-guide li > span { color: var(--terracotta); font-family: var(--serif); font-size: 14px; }
.contact-guide strong { font-family: var(--serif); font-size: 20px; }
.contact-guide p { margin: 3px 0 0; color: var(--muted); font-size: 14px; }
.profile-letter { position: relative; display: grid; grid-template-columns: 1.08fr .92fr; overflow: hidden; border: 1px solid var(--line); border-radius: 2px 24px 2px 24px; background: var(--warm); }
.profile-letter img { width: 100%; height: 100%; min-height: 340px; object-fit: cover; }
.profile-letter > div { display: flex; flex-direction: column; justify-content: center; padding: clamp(28px, 5vw, 56px); }
.profile-letter blockquote { margin: 12px 0 24px; font-family: var(--serif); font-size: clamp(25px, 3vw, 36px); line-height: 1.55; }
.profile-letter > div > span { color: var(--muted); text-align: right; }

.contact-dock { position: fixed; z-index: 30; left: 50%; bottom: max(16px, env(safe-area-inset-bottom)); display: grid; grid-template-columns: auto 1fr 1fr; gap: 6px; width: min(calc(100% - 32px), 390px); padding: 8px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255, 253, 248, .96); box-shadow: 0 16px 35px rgba(74, 45, 32, .16); transform: translateX(-50%); transition: opacity .2s ease, transform .2s ease; }
.contact-dock a, .dock-collapse { display: grid; place-items: center; min-height: 44px; border: 0; border-radius: 999px; color: var(--ink); background: transparent; font-size: 13px; cursor: pointer; }
.contact-dock a { border: 1px solid var(--line); }
.contact-dock a:hover, .contact-dock a:focus-visible { border-color: var(--terracotta); background: var(--warm); }
.dock-collapse { padding: 0 12px; color: var(--muted); }
.dock-restore { display: none; position: fixed; z-index: 29; right: 16px; bottom: max(16px, env(safe-area-inset-bottom)); min-height: 44px; padding: 0 16px; border: 1px solid var(--line); border-radius: 999px; background: var(--paper); color: var(--terracotta); box-shadow: var(--shadow); cursor: pointer; }
.dock-collapsed .contact-dock { opacity: 0; pointer-events: none; transform: translate(-50%, 18px); }
.dock-collapsed .dock-restore { display: block; }

.wechat-dialog { width: min(420px, calc(100% - 32px)); padding: 0; border: 0; border-radius: 22px; background: transparent; color: var(--ink); box-shadow: 0 24px 80px rgba(31, 37, 34, .25); }
.wechat-dialog::backdrop { background: rgba(31, 37, 34, .48); backdrop-filter: blur(3px); }
.wechat-dialog-card { position: relative; padding: 30px 30px 24px; border: 1px solid rgba(180, 102, 71, .25); border-radius: 22px; background: var(--paper); text-align: center; }
.wechat-dialog-close { position: absolute; top: 12px; right: 14px; width: 34px; height: 34px; border: 0; border-radius: 50%; background: transparent; color: var(--muted); font-size: 28px; line-height: 1; cursor: pointer; }
.wechat-dialog-close:hover, .wechat-dialog-close:focus-visible { background: var(--warm); color: var(--terracotta); }
.wechat-dialog h2 { margin: 6px 0 8px; font-family: var(--serif); font-size: 30px; }
.wechat-dialog-intro { max-width: 280px; margin: 0 auto 18px; color: var(--muted); font-size: 14px; line-height: 1.75; }
.wechat-qr { display: block; width: min(100%, 300px); aspect-ratio: 1110 / 1620; margin: 0 auto; border-radius: 12px; object-fit: cover; box-shadow: 0 10px 28px rgba(31, 37, 34, .12); }
.wechat-dialog-tip { margin: 14px 0 0; color: var(--muted); font-size: 12px; }

.article-brand-mark img { width: 56px; height: 56px; }
.article-topbar { min-height: 82px; }
.back-link { display: inline-flex; align-items: center; min-height: 44px; color: var(--terracotta); font-size: 13px; font-weight: 700; }
.reading-progress { position: fixed; z-index: 50; top: 0; left: 0; width: 100%; height: 3px; background: transparent; }
.reading-progress span { display: block; width: 0; height: 100%; background: var(--terracotta); }
.article-root { max-width: 760px; margin: 0 auto; padding: 34px 0 72px; }
.breadcrumb { display: flex; gap: 8px; margin-bottom: 46px; color: var(--muted); font-size: 12px; }
.breadcrumb a:hover, .breadcrumb a:focus-visible { color: var(--terracotta); }
.article-header .section-kicker { margin-bottom: 17px; }
.article-header h1 { max-width: none; margin-bottom: 20px; font-size: clamp(40px, 6vw, 66px); }
.article-meta { display: flex; flex-wrap: wrap; gap: 14px; color: var(--muted); font-size: 12px; }
.article-cover-wrap { position: relative; margin: 34px 0 50px; }
.article-cover { width: 100%; min-height: 320px; max-height: 500px; border: 1px solid var(--line); border-radius: 2px 20px 2px 20px; object-fit: cover; }
.article-cover-wrap figcaption { width: calc(100% - 44px); margin: -18px auto 0; padding: 10px 14px; position: relative; border: 1px solid var(--line); background: var(--paper); color: var(--muted); font-family: var(--serif); font-size: 13px; text-align: center; }
.article-body { font-size: 17px; line-height: 2; }
.article-body p { margin-bottom: 24px; }
.article-body .lead { font-family: var(--serif); font-size: 22px; line-height: 1.75; }
.article-note { margin: 28px 0 36px; padding: 14px 16px; border: 1px dashed var(--line); color: var(--muted); font-size: 13px; line-height: 1.8; }
.article-outline { margin: 0 0 44px; padding: 22px 24px; border: 1px solid var(--line); border-radius: 2px 16px 2px 16px; background: var(--warm); }
.article-outline > p { margin: 0 0 12px; color: var(--ink); font-family: var(--serif); font-size: 18px; font-weight: 700; }
.article-outline ol { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 24px; margin: 0; padding: 0; list-style: none; }
.article-outline li { border-top: 1px dashed var(--line); }
.article-outline a { display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 8px; align-items: start; padding: 9px 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.article-outline a span { color: var(--terracotta); font-family: var(--serif); }
.article-outline a:hover, .article-outline a:focus-visible { color: var(--terracotta); }
.article-section + .article-section { margin-top: 42px; }
.article-section { scroll-margin-top: 28px; }
.article-body h2 { margin: 44px 0 16px; font-size: 32px; }
.article-body .article-section h2 { margin: 0 0 16px; font-size: 32px; }
.article-checklist { margin: 50px 0 38px; padding: 32px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.article-checklist h2 { margin-top: 0; }
.article-checklist ol { margin: 24px 0 0; padding: 0; list-style: none; }
.article-checklist li { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 14px; padding: 13px 0; border-top: 1px dashed var(--line); }
.article-checklist li > span { color: var(--terracotta); font-family: var(--serif); }
.callout { margin: 32px 0; padding: 22px 24px; border-left: 4px solid var(--terracotta); background: var(--warm); }
.callout strong { display: block; margin-bottom: 5px; font-family: var(--serif); font-size: 19px; }
.callout p { margin-bottom: 0; }
.article-references { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); }
.article-body .article-references h2 { margin: 0 0 14px; font-size: 22px; }
.article-references > p { margin-bottom: 12px; color: var(--muted); font-size: 13px; line-height: 1.75; }
.article-references ul { margin: 0; padding-left: 20px; color: var(--muted); font-size: 13px; line-height: 1.8; }
.article-references li + li { margin-top: 6px; }
.article-references a { text-decoration: underline; text-decoration-color: var(--line); text-underline-offset: 3px; }
.article-references a:hover, .article-references a:focus-visible { color: var(--terracotta); text-decoration-color: var(--terracotta); }
.article-signature { display: grid; grid-template-columns: 58px minmax(0, 1fr); gap: 16px; align-items: center; margin-top: 52px; padding: 20px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.article-signature img { width: 58px; height: 58px; border-radius: 50%; }
.article-signature p { margin-bottom: 2px; font-family: var(--serif); font-size: 17px; }
.article-signature span { color: var(--muted); font-size: 12px; }
.related { margin-top: 60px; padding-top: 30px; border-top: 1px solid var(--line); }
.related h2 { margin-bottom: 18px; font-size: 28px; }
.related-list { display: grid; }
.related-list a { display: grid; gap: 3px; min-height: 66px; padding: 13px 0; border-bottom: 1px dashed var(--line); }
.related-list a > span { color: var(--muted); font-size: 11px; }
.related-list a > strong { font-family: var(--serif); font-size: 18px; }
.related-list a:hover strong, .related-list a:focus-visible strong { color: var(--terracotta); }
.empty-state { padding: 70px 0 120px; text-align: center; }
.empty-state h1 { margin: 0 auto 18px; font-size: 48px; }
.empty-state p { color: var(--muted); }

.reveal { animation: rise .65s both; }
.reveal:nth-child(2) { animation-delay: .07s; }
.reveal:nth-child(3) { animation-delay: .14s; }
.reveal:nth-child(4) { animation-delay: .21s; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }
:focus-visible { outline: 3px solid rgba(215, 122, 84, .62); outline-offset: 3px; }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 34px; }
  .hero-visual { max-width: 680px; }
  .inner-hero { grid-template-columns: 1fr; gap: 20px; }
  .profile-hero { grid-template-columns: minmax(240px, .72fr) minmax(0, 1.28fr); gap: 38px; }
  .expertise-section { gap: 36px; }
}

@media (max-width: 720px) {
  .site-shell { padding: 0 18px 132px; }
  .topbar { min-height: 82px; }
  .brand-mark { gap: 9px; }
  .brand-mark img { width: 56px; height: 56px; }
  .brand-copy strong { font-size: 18px; }
  .brand-copy small { font-size: 10px; }
  .site-menu summary { padding: 7px 11px; font-size: 12px; }
  .inner-shell .brand-mark img { width: 48px; height: 48px; }
  .inner-shell .brand-copy { display: none; }
  .inner-nav { gap: 0; }
  .inner-nav a { padding: 7px 9px; font-size: 12px; }
  .inner-hero { padding: 46px 0 34px; }
  .inner-hero h1 { font-size: 42px; }
  .inner-hero > p { font-size: 14px; }
  .archive-toolbar { align-items: flex-start; padding: 20px 0 16px; }
  .filter-row { flex-wrap: nowrap; width: calc(100% + 18px); margin-right: -18px; overflow-x: auto; padding-right: 18px; scrollbar-width: none; }
  .filter-row::-webkit-scrollbar { display: none; }
  .filter-row button { flex: 0 0 auto; min-height: 40px; padding: 6px 12px; font-size: 12px; }
  .archive-toolbar > span { padding-top: 9px; font-size: 12px; }
  .archive-grid { display: block; }
  .archive-card, .archive-card-compact { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 16px; padding: 18px 0; border-right: 0; }
  .archive-card-compact:nth-child(even), .archive-card-compact:nth-child(odd) { padding-right: 0; padding-left: 0; border-right: 0; }
  .archive-card > img, .archive-card-compact > img { width: 112px; height: 142px; min-height: 0; border-radius: 2px 14px 2px 14px; }
  .archive-card-body, .archive-card-compact .archive-card-body { justify-content: flex-start; padding: 0; }
  .archive-card .tag-row span:last-child { display: none; }
  .archive-card h2, .archive-card-compact h2 { margin: 10px 0 6px; font-size: 22px; }
  .archive-card p, .archive-card-compact p { display: -webkit-box; overflow: hidden; margin-bottom: 8px; font-size: 12px; line-height: 1.6; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
  .archive-card-meta strong { display: none; }
  .archive-note { margin-top: 36px; padding: 28px 22px; }
  .archive-note h2 { font-size: 29px; }
  .profile-hero { display: block; padding: 42px 0 38px; }
  .profile-portrait { width: 142px; margin-bottom: 28px; }
  .profile-portrait img { min-height: 178px; aspect-ratio: 3 / 4; border-radius: 2px 16px 2px 16px; }
  .profile-portrait figcaption { right: -8px; bottom: 12px; padding: 6px 9px; font-size: 11px; }
  .profile-intro h1 { margin-bottom: 12px; font-size: 34px; }
  .profile-role { font-size: 12px; line-height: 1.6; }
  .profile-intro > p:not(.eyebrow):not(.profile-role) { font-size: 14px; line-height: 1.85; }
  .profile-intro .primary-link { min-height: 44px; padding: 8px 14px; font-size: 12px; }
  .profile-values { padding: 42px 0; }
  .value-list { display: block; margin-top: 20px; }
  .value-list article, .value-list article + article { min-height: 0; padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .value-list h3 { margin: 15px 0 6px; font-size: 23px; }
  .expertise-section { display: block; padding: 42px 0; }
  .expertise-section ul { margin-top: 24px; }
  .contact-guide { display: block; padding: 42px 0; }
  .contact-guide ol { margin-top: 24px; }
  .profile-letter { display: block; }
  .profile-letter img { min-height: 0; height: 230px; }
  .profile-letter > div { padding: 26px 22px 30px; }
  .profile-letter blockquote { font-size: 26px; }
  .hero { display: block; padding: 42px 0 34px; }
  h1 { margin-bottom: 18px; font-size: clamp(42px, 13vw, 58px); }
  .hero-intro { font-size: 15px; line-height: 1.9; }
  .hero-meta { margin-bottom: 26px; }
  .hero-visual img { aspect-ratio: 16 / 9; border-radius: 2px 18px 2px 18px; }
  .hero-visual figcaption { width: calc(100% - 24px); margin-top: -13px; padding: 9px 12px; font-size: 12px; }
  .feature-section, .letters-section, .question-section, .doctor-section { margin-top: 42px; }
  .section-heading { align-items: center; }
  .section-heading .text-link { display: none; }
  .feature-card { display: block; border-radius: 16px; }
  .feature-art { height: 224px; min-height: 0; }
  .feature-content { padding: 26px 23px 30px; }
  .feature-content h3 { font-size: 33px; }
  .feature-content p { font-size: 14px; }
  .letter-card { grid-template-columns: 104px minmax(0, 1fr); gap: 15px; min-height: 142px; }
  .letter-card > img { width: 104px; height: 112px; border-radius: 12px; }
  .letter-body h3 { margin: 9px 0 5px; font-size: 21px; }
  .letter-body p { display: -webkit-box; overflow: hidden; font-size: 13px; line-height: 1.65; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
  .date { display: none; }
  .question-section { display: block; padding: 36px 0; }
  .question-grid { margin-top: 22px; }
  .question-grid a { min-height: 91px; padding: 15px; }
  .question-grid strong { font-size: 18px; }
  .doctor-section { grid-template-columns: 88px minmax(0, 1fr); gap: 18px; padding: 22px 18px; }
  .doctor-portrait { width: 88px; height: 88px; border-width: 4px; }
  .doctor-copy h2 { font-size: 30px; }
  .doctor-title { font-size: 12px; line-height: 1.6; }
  .doctor-bio { grid-column: 1 / -1; margin-top: 8px; font-size: 14px; }
  .site-footer { display: block; padding-top: 32px; }
  .site-footer p { margin-bottom: 5px; }
  .wechat-dialog-card { padding: 26px 20px 20px; }
  .wechat-dialog h2 { font-size: 27px; }
  .wechat-dialog-intro { font-size: 13px; }
  .article-brand-mark .brand-copy { display: none; }
  .article-root { padding: 24px 0 52px; }
  .breadcrumb { margin-bottom: 34px; }
  .article-header h1 { font-size: 39px; }
  .article-cover-wrap { margin: 28px 0 38px; }
  .article-cover { min-height: 230px; }
  .article-cover-wrap figcaption { width: calc(100% - 24px); font-size: 11px; }
  .article-body { font-size: 16px; }
  .article-body .lead { font-size: 20px; }
  .article-note { margin: 22px 0 30px; font-size: 12px; }
  .article-outline { margin-bottom: 34px; padding: 18px; }
  .article-outline ol { grid-template-columns: 1fr; }
  .article-outline a { font-size: 12px; }
  .article-section + .article-section { margin-top: 30px; }
  .article-body .article-section h2 { font-size: 28px; }
  .article-checklist { margin: 38px 0 30px; padding: 26px 0; }
  .article-checklist h2 { font-size: 28px; }
}

@media (max-width: 380px) {
  .site-shell { padding-right: 15px; padding-left: 15px; }
  .brand-copy small { display: none; }
  .inner-nav a { padding-right: 7px; padding-left: 7px; font-size: 11px; }
  .hero { padding-top: 34px; }
  h1 { font-size: 41px; }
  .hero-meta span { font-size: 11px; }
  .feature-art { height: 198px; }
  .feature-content h3 { font-size: 29px; }
  .question-grid { grid-template-columns: 1fr; }
  .doctor-section { display: block; }
  .doctor-portrait { margin-bottom: 16px; }
  .profile-portrait { width: 126px; }
  .profile-intro h1 { font-size: 31px; }
  .archive-card, .archive-card-compact { grid-template-columns: 96px minmax(0, 1fr); gap: 13px; }
  .archive-card > img, .archive-card-compact > img { width: 96px; height: 132px; }
  .archive-card h2, .archive-card-compact h2 { font-size: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}