:root {
  --color-ink: #232923;
  --color-charcoal: #232923;
  --color-paper: #f6f2ea;
  --color-paper-deep: #ece6da;
  --color-line: #d8d1c5;
  --editorial-muted: #62675e;
  --font-display: 'Noto Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --space-page: 64px;
  --ease-editorial: cubic-bezier(.2,.7,.2,1);
}
body { background: var(--color-paper); font-family: var(--font-body); -webkit-font-smoothing: antialiased; }
body::before { display: none; }
::selection { background: #a6423530; color: var(--color-ink); }
h1,h2,h3,p { text-wrap: pretty; }
a,button,input,select,textarea { -webkit-tap-highlight-color: transparent; }
button,input,select,textarea { font-family: inherit; }
button,a,input,select,textarea { touch-action: manipulation; }
.section-pad { max-width: 1440px; padding: 100px var(--space-page); }
.eyebrow,.section-label { color: var(--editorial-muted); font-size: 10px; font-weight: 600; letter-spacing: .13em; }
.text-link { font-size: 12px; font-weight: 600; color: var(--color-ink); text-underline-offset: 6px; }
.text-link:hover { color: var(--color-red); }
.button { min-height: 48px; border-radius: 0; font-size: 12px; letter-spacing: .02em; padding: 16px 24px; }
.button:active,button:active { transform: translateY(1px); }

/* 标志与悬停导航 */
.site-header { height: 86px; padding: 16px var(--space-page); gap: 24px; }
.site-header.header-light,.site-header.is-scrolled { background: rgba(246,242,234,.96); backdrop-filter: blur(18px); border-bottom: 1px solid var(--color-stone); }
.site-header.is-scrolled { height: 76px; padding: 11px var(--space-page); }
.brand { gap: 10px; letter-spacing: 0; flex-shrink: 0; }
.brand img { width: 39px; height: 44px; }
.brand-copy { display: grid; gap: 5px; }
.brand-name { font-size: 13px; font-weight: 700; letter-spacing: .035em; }
.brand-descriptor { font-size: 9px; font-weight: 400; text-transform: none; letter-spacing: .01em; opacity: .7; }
.site-nav { gap: 24px; font-size: 11px; letter-spacing: 0; }
.nav-dropdown-toggle { position: relative; gap: 8px; min-height: 48px; font-weight: 500; }
.nav-dropdown-toggle::after { content: ''; position: absolute; bottom: 4px; left: 0; right: 0; height: 1px; background: var(--color-red); transform: scaleX(0); transform-origin: left; transition: transform 220ms var(--ease-editorial); }
.is-expanded > .nav-dropdown-toggle::after,[data-active] > .nav-dropdown-toggle::after { transform: scaleX(1); }
[data-active] > .nav-dropdown-toggle { color: var(--color-red); }
.nav-contact-toggle { padding: 10px 0; border: 0; border-radius: 0; }
.lang-toggle { min-height: 36px; min-width: 38px; padding: 7px; margin-left: 2px; border: 1px solid var(--color-stone); border-radius: 50%; background: transparent; font-size: 10px; color: inherit; }
.lang-toggle::after { display: none; }
.lang-toggle:hover { background: var(--color-paper-deep); color: var(--color-ink); }
.nav-dropdown-menu { width: 300px; left: -24px; padding: 10px 24px 18px; border-top: 2px solid var(--color-ink); box-shadow: 0 14px 30px #2329230c; }
.nav-dropdown.is-expanded > .nav-dropdown-menu { animation: menu-arrive 200ms var(--ease-editorial); }
.nav-menu-caption { padding: 15px 0 18px; font-size: 10px; font-weight: 400; color: var(--editorial-muted); }
.nav-dropdown-menu a { font-size: 12px; padding: 15px 0; transition: color 180ms; }
.nav-link-arrow { font-size: 15px; }
@keyframes menu-arrive { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }

/* 首页像一期刊物的开篇 */
.science-hero { padding-top: 126px; padding-bottom: 28px; }
.science-masthead { padding-bottom: 18px; font-size: 9px; color: var(--editorial-muted); border-bottom: 1px solid var(--color-stone); letter-spacing: .09em; }
.science-hero-grid { grid-template-columns: minmax(0,1.2fr) minmax(0,.9fr); gap: 56px; align-items: center; padding: 40px 0; }
.science-hero h1 { margin: 26px 0; font-family: var(--font-display); font-size: clamp(62px,6.9vw,108px); line-height: .95; font-weight: 600; }
.science-hero h1 span,.science-hero h1 em { display: block; }
.science-hero h1 em { color: var(--color-red); font-weight: 600; margin-top: 10px; }
.science-hero .eyebrow { color: var(--editorial-muted); font-size: 10px; }
.science-deck { font-size: 15px; line-height: 1.8; max-width: 440px; margin: 30px 0; color: var(--editorial-muted); font-weight: 500; }
.science-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 30px; }
.science-actions .science-button,.science-actions .text-link { margin: 0; }
.science-button { background: var(--color-ink); border: 1px solid var(--color-ink); color: var(--color-paper); }
.science-button::after { content: '↗'; margin-left: 26px; font-size: 16px; }
.science-button:hover { background: var(--color-red); border-color: var(--color-red); }
.science-cover { position: relative; margin: 0; align-self: stretch; min-height: 485px; }
.science-cover > img { width: 100%; height: 100%; max-height: 620px; object-fit: cover; object-position: center 42%; }
.science-cover::after { content: ''; pointer-events: none; position: absolute; inset: 45% 0 33px; background: linear-gradient(transparent,#151915a8); }
.science-cover-label { position: absolute; z-index: 1; bottom: 70px; left: 28px; color: var(--color-paper); }
.science-cover-label span { display: block; font-size: 9px; letter-spacing: .14em; margin-bottom: 10px; }
.science-cover-label strong { font: 500 italic 48px/1 var(--font-display); }
.science-cover figcaption { position: absolute; bottom: 0; width: 100%; display: flex; justify-content: space-between; gap: 10px; padding: 12px 0 0; background: var(--color-paper); font-size: 8px; color: var(--editorial-muted); }
.science-cover figcaption a { text-decoration: none; }
.science-bottomline { display: flex; justify-content: space-between; gap: 24px; padding: 23px 0 0; border-top: 1px solid var(--color-stone); color: var(--editorial-muted); font-size: 8px; letter-spacing: .07em; }
.science-bottomline a { text-decoration: none; white-space: nowrap; }
.knowledge { padding-top: 95px; border-top: 0; }
.knowledge h2 { font: 600 64px/1 var(--font-display); max-width: 700px; margin: 28px 0 48px; }
.knowledge-grid { gap: 0; border: 0; border-top: 1px solid var(--color-ink); }
.knowledge-grid article { min-height: 240px; padding: 28px 28px 20px 0; background: transparent; border: 0; border-bottom: 1px solid var(--color-stone); }
.knowledge-grid article + article { padding-left: 28px; border-left: 1px solid var(--color-stone); }
.knowledge-grid span { font-size: 9px; font-weight: 500; letter-spacing: .08em; color: var(--color-red); }
.knowledge-grid h3 { font: 600 32px/1.05 var(--font-display); margin: 30px 0 18px; }
.knowledge-grid p { font-size: 14px; line-height: 1.75; color: var(--editorial-muted); font-weight: 500; }
.source-note { font-size: 10px; line-height: 1.8; }
.reading-room { max-width: none; padding-top: 84px; padding-bottom: 84px; background: var(--color-paper-deep); border: 0; }
.reading-room > * { max-width: calc(1440px - 2 * var(--space-page)); margin-left: auto; margin-right: auto; }
.reading-room h2 { font: 600 64px/1 var(--font-display); max-width: 800px; margin: 30px 0 48px; }
.library-grid { border: 0; gap: 36px; }
.library-card { border: 0; padding: 0 0 24px; background: transparent; border-bottom: 1px solid var(--color-stone); }
.library-card:hover { background: transparent; }
.library-card-image { width: 100%; max-width: 100%; margin: 0 0 20px; aspect-ratio: 1.4; transition: filter 220ms; }
.library-card:hover .library-card-image { filter: brightness(1.06); }
.library-number { font-size: 9px; letter-spacing: .08em; }
.library-card h3 { font: 600 34px/1.1 var(--font-display); margin: 15px 0; }
.library-card p { font-size: 14px; line-height: 1.7; font-weight: 500; }
.library-card .text-link { font-size: 11px; }
.library-card:not(:has(img)) { padding-top: 24px; border-top: 1px solid var(--color-stone); }
.contact-section { padding-top: 85px; padding-bottom: 85px; border-top: 1px solid var(--color-stone); }
.contact-section h2 { font: 500 48px/1.1 var(--font-display); }
.contact-section .join-panel { border: 0; padding: 0; background: transparent; }
.contact-email { font: 500 26px/1.4 var(--font-body); }

/* 新闻室：保留新闻网站的节奏，但让每条信息都有呼吸感。 */
.library-main.news-main { padding-top: 108px; }
.news-intro { padding-top: 46px; padding-bottom: 44px; }
.news-publication-line { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 20px; border-bottom: 1px solid var(--color-stone); font-size: 9px; color: var(--editorial-muted); letter-spacing: .1em; }
.news-publication-line a { color: inherit; text-decoration: none; }
.news-masthead { display: grid; grid-template-columns: minmax(0,1fr) minmax(260px,.45fr); gap: 64px; align-items: end; padding-top: 38px; }
.news-masthead h1 { margin: 0; font: 600 clamp(72px,9vw,132px)/.83 var(--font-display); }
.news-masthead h1 span,.news-masthead h1 em { display: block; }
.news-masthead h1 em { margin-top: 9px; color: var(--color-red); font-weight: 600; }
.news-deck { max-width: 360px; margin: 0 0 8px; color: var(--editorial-muted); font-size: 14px; font-weight: 500; line-height: 1.85; }
.news-feature { padding-top: 24px; padding-bottom: 92px; }
.news-lead { display: grid; grid-template-columns: minmax(0,1.18fr) minmax(300px,.82fr); gap: 52px; margin-top: 25px; padding-top: 25px; border-top: 1px solid var(--color-ink); }
.news-lead-image { min-height: 420px; margin: 0; overflow: hidden; background: var(--color-paper-deep); }
.news-lead-image img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.news-lead-content { display: flex; flex-direction: column; align-items: flex-start; justify-content: center; padding: 16px 0 16px 4px; }
.news-lead-content time,.news-story-date time { font-size: 10px; color: var(--editorial-muted); letter-spacing: .08em; }
.news-kicker { margin: 21px 0 0; color: var(--color-red); font-size: 10px; font-weight: 600; letter-spacing: .1em; }
.news-lead h2 { max-width: 580px; margin: 19px 0; font: 600 47px/1.05 var(--font-display); }
.news-summary { max-width: 500px; margin: 0 0 28px; color: var(--editorial-muted); font-size: 14px; font-weight: 500; line-height: 1.85; }
.news-archive { max-width: none; padding-top: 82px; padding-bottom: 105px; background: var(--color-paper-deep); }
.news-archive > * { max-width: calc(1440px - 2 * var(--space-page)); margin-left: auto; margin-right: auto; }
.news-archive-head { padding-bottom: 42px; border-bottom: 1px solid var(--color-ink); }
.news-archive-head h2 { max-width: 760px; margin: 26px 0 0; font: 600 60px/1 var(--font-display); }
.news-archive-list { display: grid; }
.news-story { display: grid; grid-template-columns: 145px minmax(0,1fr) 280px; gap: 38px; align-items: start; padding: 43px 0; border-bottom: 1px solid var(--color-stone); }
.news-story-copy h3 { max-width: 690px; margin: 12px 0 16px; font: 600 34px/1.08 var(--font-display); }
.news-story-copy > p:last-child { max-width: 680px; margin: 0; color: var(--editorial-muted); font-size: 14px; font-weight: 500; line-height: 1.8; }
.news-story .news-kicker { margin: 0; }
.news-story-image { aspect-ratio: 1.45; margin: 0; overflow: hidden; background: var(--color-paper); }
.news-story-image img { width: 100%; height: 100%; object-fit: cover; }
@media (max-width:900px) { .news-masthead,.news-lead { grid-template-columns: 1fr; gap: 28px; } .news-lead-content { padding-left: 0; } .news-story { grid-template-columns: 110px minmax(0,1fr); } .news-story-image { grid-column: 2; width: min(100%,360px); } }
@media (max-width:640px) { .news-intro,.news-feature { padding-top: 36px; padding-bottom: 60px; } .news-masthead h1 { font-size: 64px; } .news-lead-image { min-height: 270px; } .news-lead h2 { font-size: 38px; } .news-archive { padding-top: 60px; padding-bottom: 70px; } .news-archive-head h2 { font-size: 45px; } .news-story { grid-template-columns: 1fr; gap: 16px; padding: 32px 0; } .news-story-image { grid-column: auto; width: 100%; margin-top: 7px; } }

/* 科普大全：刊头、检索、头条与文章目录 */
.library-main { padding-top: 86px; }
.journal-intro { padding-top: 45px; padding-bottom: 0; }
.journal-publication-line { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 22px; border-bottom: 1px solid var(--color-stone); font-size: 9px; letter-spacing: .08em; color: var(--editorial-muted); }
.journal-publication-line a { text-decoration: none; }
.journal-masthead { display: grid; grid-template-columns: minmax(0,1.45fr) minmax(0,.7fr); gap: 60px; align-items: end; padding: 38px 0 48px; }
.journal-masthead h1 { font: 500 clamp(70px,8vw,120px)/.82 var(--font-display); margin: 0; }
.journal-masthead h1 span,.journal-masthead h1 em { display: block; }
.journal-masthead h1 em { color: var(--color-red); font-weight: 500; margin-top: 8px; }
.journal-intro-note { max-width: 300px; padding-bottom: 6px; }
.journal-note-title { font: 500 28px/1.1 var(--font-display); margin: 0 0 16px; }
.journal-intro-note .library-deck { font-size: 12px; line-height: 1.8; margin: 0; color: var(--editorial-muted); }
.journal-tools { grid-template-columns: minmax(200px,1fr) 235px 190px; margin-top: 0; gap: 0; border-top: 1px solid var(--color-ink); border-bottom: 1px solid var(--color-ink); }
.journal-tools label { padding: 16px 20px; gap: 5px; font-size: 9px; text-transform: uppercase; letter-spacing: .06em; border-left: 1px solid var(--color-stone); }
.journal-tools label:first-child { padding-left: 0; border-left: 0; }
.journal-tools input,.journal-tools select { border: 0; border-radius: 0; background: transparent; font-family: var(--font-body); font-size: 12px; color: var(--color-ink); min-height: 32px; padding: 3px 0; }
.journal-tools input::placeholder { color: var(--editorial-muted); }
.journal-tools input:focus-visible,.journal-tools select:focus-visible { outline-offset: 1px; }
.journal-section { padding-top: 32px; padding-bottom: 100px; }
.journal-section-head { border: 0; padding-bottom: 25px; gap: 22px; }
.journal-section-head h2 { font: 500 19px/1.2 var(--font-display); }
.archive-label { font-size: 9px; letter-spacing: .13em; color: var(--editorial-muted); }
#article-count { margin-left: auto; font-size: 10px; }
#article-feed { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 0 40px; }
.journal-row { position: relative; grid-template-columns: 160px minmax(0,1fr); gap: 23px; padding: 30px 0; border-bottom: 1px solid var(--color-stone); }
.journal-thumbnail { aspect-ratio: 1.2; align-self: start; background: var(--color-paper-deep); }
.journal-thumbnail img { transition: transform 500ms var(--ease-editorial); }
.journal-thumbnail:hover img { transform: scale(1.02); }
.journal-row h3 { font: 500 31px/1 var(--font-display); margin: 15px 0; }
.journal-row h3 a:hover { color: var(--color-red); }
.journal-row p { color: var(--editorial-muted); font-size: 12px; line-height: 1.75; }
.journal-meta { gap: 12px; flex-wrap: wrap; font-size: 9px; letter-spacing: .03em; color: var(--editorial-muted); }
.journal-meta time { white-space: nowrap; }
.journal-meta span { color: var(--color-red); }
.journal-row .text-link { font-size: 10px; margin-top: 15px; }
.journal-index { display: block; margin-bottom: 14px; font-size: 9px; color: var(--editorial-muted); letter-spacing: .1em; }
.journal-row.journal-lead { grid-column: 1/-1; grid-template-columns: minmax(0,1fr) minmax(0,1.15fr); gap: 64px; padding: 0 0 48px; }
.journal-lead .journal-thumbnail { grid-column: 2; grid-row: 1; aspect-ratio: 1.7; }
.journal-lead .journal-row-content { grid-column: 1; grid-row: 1; align-self: center; max-width: 490px; }
.journal-lead h3 { font-size: clamp(40px,4.3vw,62px); margin: 24px 0 20px; line-height: .97; }
.journal-lead p { font-size: 14px; max-width: 380px; }
.journal-lead .journal-index { color: var(--color-red); margin-bottom: 24px; }
.journal-lead .text-link { font-size: 11px; margin-top: 24px; }
.journal-lead .journal-no-image { min-height: 250px; }
.journal-no-image { background: var(--color-paper-deep); position: relative; }
.journal-no-image::before { content: 'Aa'; position: absolute; font: 500 italic 72px var(--font-display); color: #2329231f; }
.journal-no-image span { z-index: 1; font-size: 9px; align-self: end; padding-bottom: 20px; letter-spacing: .1em; }
#article-empty { border-top: 1px solid var(--color-stone); padding: 60px 0; }
#article-empty h3 { font: 500 40px var(--font-display); }
#article-empty p { color: var(--editorial-muted); font-size: 14px; }
#clear-filters { background: var(--color-ink); color: var(--color-paper); font-size: 12px; margin-top: 15px; }
.journal-loading { grid-column: 1/-1; min-height: 230px; display: flex; gap: 12px; align-items: center; justify-content: center; }
.journal-loading span { width: 6px; height: 6px; border-radius: 50%; background: var(--color-red); animation: loading-breath 1s ease-in-out infinite alternate; }
.journal-loading span:nth-child(2) { animation-delay: .2s; }.journal-loading span:nth-child(3) { animation-delay: .4s; }
@keyframes loading-breath { from { opacity: .25; } to { opacity: 1; } }
#journal-error { color: var(--color-red); font-size: 14px; }

/* 阅读页：长正文与边栏 */
#article-detail { padding-top: 50px; }
.article-breadcrumb { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--color-stone); padding-bottom: 24px; margin-bottom: 50px; font-size: 9px; letter-spacing: .06em; color: var(--editorial-muted); }
.article-breadcrumb .text-link { margin: 0; font-size: 10px; }
.article-title-block { max-width: 1000px; margin: auto; text-align: center; }
.article-title-block .journal-meta { justify-content: center; }
.article-title-block h1 { font: 500 clamp(54px,7vw,96px)/1 var(--font-display); margin: 25px 0; }
.article-title-block .library-deck { font: 400 16px/1.8 var(--font-body); max-width: 650px; margin: auto; color: var(--editorial-muted); }
.article-byline { display: block; font-size: 9px; letter-spacing: .07em; margin-top: 30px; color: var(--editorial-muted); }
#article-detail .article-cover { margin: 50px 0 0; max-width: none; }
.article-cover img { aspect-ratio: 2.35; max-height: 560px; object-fit: cover; }
.article-cover figcaption { font-size: 9px; padding-top: 8px; }
.article-reading-layout { display: grid; grid-template-columns: minmax(160px,.6fr) minmax(0,2fr) minmax(0,.3fr); gap: 55px; margin-top: 70px; }
.reading-sidebar { align-self: start; position: sticky; top: 110px; font-size: 11px; color: var(--editorial-muted); }
.reading-sidebar > p { text-transform: uppercase; font-size: 9px; letter-spacing: .1em; margin: 0 0 22px; }
.reading-sidebar nav { display: grid; gap: 16px; }
.reading-sidebar a { text-decoration: none; line-height: 1.5; }
.reading-sidebar a:hover { color: var(--color-red); }
.journal-body { margin: 0; max-width: 700px; }
.journal-body > h2 { font: 500 40px/1.1 var(--font-display); margin: 50px 0 22px; }
.journal-body > h2:first-child { margin-top: 0; }
.journal-body > p { font: 400 16px/1.95 var(--font-body); color: #454c43; margin: 0 0 24px; }
.journal-body > h2:first-child + p::first-letter { font: 500 62px/.88 var(--font-display); float: left; margin: 6px 8px 0 0; color: var(--color-red); }
.journal-body ul { border-top: 1px solid var(--color-stone); padding: 20px 0 0 18px; font-size: 12px; line-height: 1.8; }
.article-ending { margin-top: 60px; padding-top: 24px; border-top: 1px solid var(--color-ink); display: flex; justify-content: space-between; gap: 20px; font-size: 11px; }
.reading-progress { position: fixed; top: 0; left: 0; z-index: 30; height: 2px; background: var(--color-red); width: 100%; transform: scaleX(0); transform-origin: left; pointer-events: none; }

/* 校园与社团介绍 */
.campus-hero { min-height: 100svh; padding-bottom: 100px; }
.campus-hero-content { max-width: 900px; }
.campus-hero h1 { font: 500 clamp(92px,11vw,164px)/.82 var(--font-display); margin: 32px 0; }
.campus-hero h1 span,.campus-hero h1 em { display: block; }.campus-hero h1 em { font-weight: 500; }
.campus-hero .eyebrow { color: #f6f2eac7; font-size: 9px; }
.campus-hero-content > p:not(.eyebrow) { font-size: 16px; line-height: 1.7; max-width: 440px; }
.campus-hero-content a { font-size: 11px; margin-top: 24px; }
.campus-page .site-header:not(.is-scrolled):not(.menu-active) { background: linear-gradient(#23292380,transparent); border-bottom-color: #ffffff30; backdrop-filter: none; }
.campus-page .site-header:not(.is-scrolled):not(.menu-active) [data-active] > .nav-dropdown-toggle { color: white; }
.campus-location { font-size: 9px; }
.about-hero-grid { gap: 100px; }
.about-logo { width: 170px; }
.about-hero-copy { font-size: 14px; line-height: 1.85; }
.identity-line { font-size: 19px; line-height: 1.65; }
.about-stats { border-top: 1px solid var(--color-stone); background: transparent; gap: 30px; }
.about-stats div { background: transparent; padding: 25px 0; }
.about-stats strong { color: var(--color-ink); font-family: var(--font-display); }
.about-stats span { font-size: 9px; }
.tb-hut { background: var(--color-paper-deep); }
.tb-hut h2,.members h2,.programs h2,.glimmer h2,.story h2,.about-cta h2,.evidence h2 { font-family: var(--font-display); font-weight: 500; }
.tb-hut p,.story p,.glimmer-copy p,.evidence p { font-size: 15px; line-height: 1.8; }
.archive-note { background: transparent; border: 0; padding: 0; }
.tb-list h3 { font: 500 30px var(--font-display); }
.tb-list p { font-size: 13px; }
.tb-list span { font-size: 9px; }
.glimmer { background: var(--color-ink); }
.glimmer-layout { border: 0; padding: 0; background: transparent; }
.member-grid { background: transparent; gap: 32px; }
.member-card { padding: 0 0 30px; background: transparent; border-bottom: 1px solid var(--color-stone); }
.member-photo { border: 0; border-radius: 0; }
.member-card h3 { font-weight: 500; }
.member-card p { font-size: 13px; line-height: 1.7; }
.program-card { background: transparent; }.program-card h3 { font-weight: 500; }
.program-card p { font-size: 13px; line-height: 1.8; }

/* 页脚与后台延续同一字体和用色 */
.site-footer { position: relative; display: grid; grid-template-columns: 1fr 1fr auto; padding: 65px var(--space-page) 35px; gap: 35px; background: var(--color-ink); color: var(--color-paper); }
.footer-masthead { grid-column: 1/-1; padding-bottom: 55px; border-bottom: 1px solid #f6f2ea35; font: 500 clamp(56px,8vw,120px)/.95 var(--font-display); }
.footer-masthead em { margin-left: 16px; color: #bfbba8; font-weight: 500; }
.site-footer strong { font-size: 11px; letter-spacing: .07em; }
.site-footer p { font-size: 11px; line-height: 1.9; max-width: 350px; }
.site-footer > p { align-self: end; }.editor-link { font-size: 10px; }
.admin-page { font-family: var(--font-body); }
.admin-page h1 { font-family: var(--font-display); font-weight: 500; font-size: 58px; }
.editor-header { padding: 26px var(--space-page); font-size: 11px; }
.admin-page fieldset { background: #ffffff30; border-radius: 0; }
.admin-page legend { font-size: 12px; color: var(--editorial-muted); padding: 0 12px; }
.admin-page label { font-size: 12px; }.admin-page input,.admin-page textarea,.admin-page select { font-size: 14px; }
.admin-page button { font-size: 12px; border-radius: 0; }
.admin-page button:hover { background: var(--color-red); border-color: var(--color-red); }
#login-panel { border-top: 1px solid var(--color-ink); padding-top: 32px; }
#login-help { font-size: 14px; line-height: 1.7; color: var(--editorial-muted); }
#admin-articles button:hover { background: var(--color-paper-deep); color: var(--color-ink); border-color: var(--color-stone); }

/* 中文排版不依赖英文斜体字形 */
body[data-language='zh'] h1,body[data-language='zh'] h2,body[data-language='zh'] h3 { font-family: var(--font-body); }
body[data-language='zh'] .science-hero h1 { font-size: clamp(48px,5vw,72px); line-height: 1.25; }
body[data-language='zh'] .science-hero h1 em,body[data-language='zh'] .journal-masthead h1 em,body[data-language='zh'] .campus-hero h1 em { font-style: normal; }
body[data-language='zh'] .journal-masthead h1 { font-size: 86px; line-height: 1.05; }
body[data-language='zh'] .journal-masthead h1 span,body[data-language='zh'] .journal-masthead h1 em { display: inline; }
body[data-language='zh'] .journal-masthead h1 em { margin-left: 12px; }
body[data-language='zh'] .journal-lead h3 { font-size: 44px; line-height: 1.25; }
body[data-language='zh'] .journal-row:not(.journal-lead) h3 { font-size: 26px; line-height: 1.3; }
body[data-language='zh'] .journal-body h2 { font-size: 32px; }
body[data-language='zh'] .journal-body > h2:first-child + p::first-letter { float: none; font: inherit; color: inherit; margin: 0; }
body[data-language='zh'] .footer-masthead { font-family: var(--font-body); font-size: clamp(40px,5vw,70px); line-height: 1.3; }
body[data-language='zh'] .footer-masthead em { font-style: normal; }

@media(min-width:1600px) { .site-header { padding-left: max(64px,calc((100vw - 1312px) / 2)); padding-right: max(64px,calc((100vw - 1312px) / 2)); } }
@media(max-width:1200px) {
 :root { --space-page: 40px; }
 .site-nav { gap: 20px; }.brand-descriptor { display: none; }
 .science-hero-grid { gap: 35px; }.science-cover { min-height: 430px; }
 .journal-row { grid-template-columns: 130px minmax(0,1fr); gap: 20px; }
 .journal-row.journal-lead { gap: 40px; }
 .journal-masthead { gap: 35px; }
}
@media(max-width:1100px) {
 .site-header { height: 76px; padding-top: 12px; padding-bottom: 12px; }
 .brand-descriptor { display: block; }
 .menu-toggle { display: block; flex: 0 0 auto; }
 .site-nav { position: fixed; top: 76px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; max-height: calc(100dvh - 76px); overflow-y: auto; padding: 24px var(--space-page) 30px; border-bottom: 1px solid var(--color-stone); background: var(--color-paper); color: var(--color-ink); }
 .site-nav.is-open { display: flex; }
 .site-nav .nav-dropdown { border-bottom: 1px solid var(--color-stone); }
 .nav-dropdown-toggle { width: 100%; justify-content: space-between; padding: 16px 0; min-height: 54px; font-size: 14px; }
 .nav-dropdown-toggle::after { display: none; }
 .nav-dropdown-menu { position: static; width: 100%; margin: 0 0 16px; padding: 0 16px; border: 0; border-left: 1px solid var(--color-stone); box-shadow: none; max-height: none; overflow: visible; }
 .nav-dropdown-menu a { border-bottom: 0; }
 .lang-toggle { align-self: start; margin: 20px 0 0; width: 44px; height: 44px; }
 .science-cover { min-height: 410px; }
 .science-hero h1 { font-size: 66px; }
 .journal-masthead h1 { font-size: 88px; }
 .journal-tools { grid-template-columns: minmax(180px,1fr) 190px 160px; }
 .journal-row { grid-template-columns: 110px minmax(0,1fr); gap: 18px; }
 .journal-row h3 { font-size: 28px; }
 .article-reading-layout { grid-template-columns: 170px minmax(0,1fr); gap: 40px; }
 .site-footer { grid-template-columns: 1fr 1fr; }.editor-link { grid-column: 1/-1; }
}
@media(max-width:760px) {
 :root { --space-page: 20px; }
 .section-pad { padding-top: 64px; padding-bottom: 64px; }
 .site-header,.site-header.is-scrolled { padding-left: 20px; padding-right: 20px; }
 .brand img { width: 34px; }.brand span { max-width: none; }
 .brand-descriptor { font-size: 8px; }.brand-name { font-size: 12px; }
 .science-hero { padding-top: 103px; padding-bottom: 24px; }
 .science-masthead { font-size: 8px; }.science-masthead span:last-child { display: none; }
 .science-hero-grid { grid-template-columns: 1fr; gap: 35px; padding: 32px 0 20px; }
 .science-hero h1 { font-size: clamp(54px,11vw,78px); margin: 25px 0; }
 .science-hero .eyebrow { font-size: 8px; }
 .science-deck { font-size: 13px; margin: 24px 0; }
 .science-actions { gap: 20px; }.science-button { padding: 15px 18px; font-size: 11px; }
 .science-cover { min-height: 0; height: 400px; }
 .science-cover-label strong { font-size: 40px; }
 .science-bottomline { font-size: 7px; line-height: 1.8; }.science-bottomline span { max-width: 230px; }
 .science-bottomline a { display: none; }
 .knowledge h2,.reading-room h2 { font-size: 44px; line-height: 1.05; margin: 25px 0 36px; }
 .knowledge-grid { grid-template-columns: 1fr; }
 .knowledge-grid article,.knowledge-grid article + article { padding: 25px 0; min-height: 0; border-left: 0; }
 .knowledge-grid h3 { margin-top: 16px; font-size: 30px; }
 .library-grid { grid-template-columns: 1fr; gap: 35px; }
 .library-card h3 { font-size: 32px; }.library-card-image { aspect-ratio: 1.5; }
 .contact-section h2 { font-size: 38px; }.contact-email { font-size: 21px; }
 .library-main { padding-top: 76px; }
 .journal-intro { padding-top: 25px; padding-bottom: 0; }
 .journal-publication-line { font-size: 7px; padding-bottom: 18px; }.journal-publication-line a { white-space: nowrap; }
 .journal-masthead { grid-template-columns: 1fr; gap: 28px; padding: 32px 0; }
 .journal-masthead h1 { font-size: clamp(64px,14vw,100px); }
 .journal-intro-note { display: none; }
 .journal-tools { grid-template-columns: 1fr 1fr; }
 .journal-tools label { padding: 12px 0; }
 .journal-tools label:first-child { grid-column: 1/-1; border-bottom: 1px solid var(--color-stone); }
 .journal-tools label:nth-child(2) { border-left: 0; }.journal-tools label:last-child { padding-left: 18px; }
 .journal-tools input,.journal-tools select { font-size: 12px; min-height: 36px; }
 .journal-tools input { font-size: 16px; }
 .journal-section { padding-top: 25px; }.journal-section-head { padding-bottom: 22px; }
 .archive-label { display: none; }.journal-section-head h2 { font-size: 22px; }
 #article-feed { grid-template-columns: 1fr; }
 .journal-row.journal-lead { grid-template-columns: 1fr; gap: 22px; padding-bottom: 30px; }
 .journal-lead .journal-thumbnail { grid-column: 1; grid-row: 1; aspect-ratio: 1.6; }
 .journal-lead .journal-row-content { grid-column: 1; grid-row: 2; max-width: none; }
 .journal-lead .journal-index { margin-bottom: 15px; }
 .journal-lead h3 { font-size: 46px; margin: 20px 0 14px; }.journal-lead p { font-size: 13px; }
 .journal-row:not(.journal-lead) { grid-template-columns: 115px minmax(0,1fr); gap: 20px; }
 .journal-row:not(.journal-lead) h3 { font-size: 28px; margin: 12px 0; }
 .journal-row:not(.journal-lead) p { font-size: 11px; line-height: 1.75; }
 .journal-row .text-link { margin-top: 10px; }.journal-index { font-size: 8px; }
 #article-detail { padding-top: 28px; }.article-breadcrumb { margin-bottom: 36px; }
 .article-title-block h1 { font-size: 56px; }.article-title-block .library-deck { font-size: 14px; }
 #article-detail .article-cover { margin-top: 30px; }.article-cover img { aspect-ratio: 1.4; }
 .article-reading-layout { grid-template-columns: 1fr; gap: 30px; margin-top: 38px; }
 .reading-sidebar { position: static; border-bottom: 1px solid var(--color-stone); padding-bottom: 24px; }
 .reading-sidebar nav { display: flex; flex-wrap: wrap; gap: 14px 22px; font-size: 10px; }
 .reading-sidebar > p { margin-bottom: 16px; }
 .journal-body > h2 { font-size: 34px; }.journal-body > p { font-size: 15px; line-height: 1.95; }
 .campus-hero { padding-top: 160px; padding-bottom: 100px; }.campus-hero h1 { font-size: 110px; }
 .campus-hero-content > p:not(.eyebrow) { font-size: 14px; }.campus-hero .eyebrow { font-size: 8px; }
 .about-hero-grid { gap: 30px; }.campus-page #society-introduction { padding-top: 64px; }
 .site-footer { padding: 50px 20px 30px; grid-template-columns: 1fr; gap: 25px; }
 .footer-masthead { font-size: 62px; padding-bottom: 36px; }.footer-masthead em { margin-left: 10px; }
 .site-footer p { font-size: 10px; }.editor-link { justify-self: start; }
 .editor-header { padding: 22px 20px; }.admin-page h1 { font-size: 42px; }
 body[data-language='zh'] .journal-masthead h1 { font-size: 62px; }
 body[data-language='zh'] .journal-lead h3 { font-size: 36px; }
 body[data-language='zh'] .science-hero h1 { font-size: 44px; }
 body[data-language='zh'] .footer-masthead { font-size: 34px; }
}
@media(prefers-reduced-motion:reduce) {
 *,*::before,*::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
.article-reading-layout.without-sidebar { display: block; max-width: 740px; margin-left: auto; margin-right: auto; }
@media(min-width:761px) and (max-width:1100px) {
 .knowledge-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
 .knowledge-grid article:nth-child(3) { padding-left: 0; border-left: 0; }
 .library-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}

/* 保证正文在精细排版下仍易于阅读 */
.science-deck { font-size: 16px; }
.knowledge-grid p,.library-card p { font-size: 15px; }
.journal-intro-note .library-deck { font-size: 14px; }
.journal-row p { font-size: 14px; }
.journal-lead p { font-size: 16px; }
.article-reading-layout { align-items: start; }
@media(max-width:760px) {
 .science-deck,.knowledge-grid p,.library-card p,.journal-lead p { font-size: 15px; }
 .journal-row:not(.journal-lead) p { font-size: 13px; }
}
 .related-reading ul { list-style: none; padding: 0; }
 .related-reading li { display: grid; grid-template-columns: 7rem minmax(0, 1fr); gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--color-line); }
 .related-reading time { font-size: .8rem; opacity: .65; }
 .related-reading a { overflow-wrap: anywhere; }
 @media (max-width: 600px) { .related-reading li { grid-template-columns: 1fr; gap: .4rem; } }
 .knowledge-visual { margin: 2rem 0 3rem; padding: 1.8rem; background: #e8eee7; color: var(--color-ink); }
 .knowledge-visual .visual-eyebrow { font-size: .7rem; letter-spacing: 0; margin: 0 0 .8rem; }
 .knowledge-visual h3 { font-family: var(--font-body); font-size: 1.3rem; margin: 0 0 1.5rem; line-height: 1.5; }
 .knowledge-visual .visual-items { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1.2rem; padding: 0; margin: 0; list-style: none; }
 .knowledge-visual .visual-items li { padding: 1rem 0 0; border-top: 2px solid #526c54; min-width: 0; }
 .visual-number { display: block; font-size: .75rem; color: var(--editorial-muted); margin-bottom: .6rem; }
 .knowledge-visual strong { display: block; font-size: 1.1rem; line-height: 1.5; overflow-wrap: anywhere; }
 .knowledge-visual .visual-items p { font-size: .9rem; line-height: 1.7; margin: .5rem 0 0; white-space: pre-line; }
 .knowledge-visual figcaption { margin-top: 1.4rem; font-size: .8rem; line-height: 1.7; }
 .knowledge-visual-contrast { background: #f0e8e1; }
 .knowledge-visual-contrast .visual-items { grid-template-columns: repeat(2,minmax(0,1fr)); }
 .knowledge-visual-contrast .visual-items li:last-child { border-color: #b15340; }
 .knowledge-visual-formula { background: #232923; color: #fff; }
 .knowledge-visual-formula .visual-number { color: #cbd6c8; }
 .knowledge-visual-formula strong { font-size: 1.6rem; }
 .knowledge-visual-formula figcaption { color: #d6e0d2; }
 .knowledge-visual-checklist .visual-items { grid-template-columns: 1fr; gap: 1rem; }
 .knowledge-visual-checklist .visual-items li { display: grid; grid-template-columns: 2rem minmax(0,1fr); gap: .4rem .8rem; }
 .knowledge-visual-checklist .visual-items p { grid-column: 2; margin: 0; }
 .knowledge-visual-meal { background: #f4e9d7; }
 .knowledge-visual-schedule .visual-items li { border-color: #b15340; }
 @media(max-width:600px) { .knowledge-visual { padding: 1.2rem; } .knowledge-visual .visual-items, .knowledge-visual-contrast .visual-items { grid-template-columns: 1fr; } }
 .journal-row-content .journal-image-credit { font-size: .7rem; line-height: 1.5; margin: 1rem 0 0; color: var(--editorial-muted); }
 .journal-thumbnail img[src$="/tb-contact-screening.jpg"] { object-position: center 20%; }

/* 科普目录以图片和标题为主，详细信息放在阅读页。 */
.library-main .journal-intro { padding-top: 48px; }
.journal-publication-line,.journal-intro-note,.journal-section-head .archive-label { display: none; }
.library-main .journal-masthead { display: block; padding: 0 0 32px; }
#top .journal-masthead h1 { font-family: var(--font-body); font-size: 36px; line-height: 1.25; font-weight: 600; }
.journal-tools { grid-template-columns: minmax(220px,1fr) 220px 150px; border-top: 0; border-bottom: 1px solid var(--color-line); gap: 24px; }
.journal-tools label { padding: 0 0 20px; border: 0; font-size: 11px; text-transform: none; letter-spacing: 0; }
.journal-tools label > span { display: none; }
.journal-tools input,.journal-tools select { font-size: 14px; min-height: 40px; }
.journal-section { padding-top: 36px; }
.journal-section-head { display: flex; align-items: baseline; margin-bottom: 24px; padding-bottom: 0; }
.journal-section-head h2 { font-family: var(--font-body); font-size: 18px; line-height: 1.4; font-weight: 500; }
#article-count { font-size: 13px; color: var(--editorial-muted); }
#article-feed { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 48px 32px; align-items: start; }
#article-feed .journal-row { display: block; padding: 0; border: 0; min-width: 0; }
.journal-card-link { display: block; color: inherit; text-decoration: none; }
.journal-card-link:focus-visible { outline: 2px solid var(--color-red); outline-offset: 6px; }
#article-feed .journal-thumbnail { display: block; width: 100%; aspect-ratio: 3 / 2; overflow: hidden; }
#article-feed .journal-thumbnail img { display: block; width: 100%; height: 100%; object-fit: cover; }
#article-feed .journal-row-content { padding-top: 18px; }
#article-feed .journal-meta { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; min-height: 22px; font-size: 13px; letter-spacing: 0; }
#article-feed .journal-meta span { color: var(--editorial-muted); }
#article-feed .journal-row h3 { font-family: var(--font-body); font-size: 23px; font-weight: 500; line-height: 1.45; margin: 8px 0 0; overflow-wrap: anywhere; }
.journal-card-link:hover h3 { color: var(--color-red); }
#article-feed .journal-topic { grid-column: 1/-1; padding: 14px 0; border-top: 1px solid var(--color-line); border-bottom: 1px solid var(--color-line); }
.journal-topic-link { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; color: inherit; text-decoration: none; }
.journal-topic-link strong { font-size: 16px; font-weight: 500; }
.journal-topic-link span { font-size: 13px; white-space: nowrap; color: var(--editorial-muted); }
.journal-topic-link:hover { color: var(--color-red); }
.journal-pagination { display: flex; align-items: center; justify-content: center; gap: 24px; margin-top: 56px; }
.journal-pagination[hidden] { display: none; }
.journal-pagination button { display: grid; place-items: center; width: 42px; height: 42px; padding: 0; border: 1px solid var(--color-line); border-radius: 0; background: transparent; color: var(--color-ink); font-size: 20px; }
.journal-pagination button:hover:not(:disabled) { background: var(--color-paper-deep); }
.journal-pagination button:disabled { opacity: .3; cursor: default; }
.journal-pagination span { min-width: 52px; text-align: center; font-size: 14px; }
.journal-page-form { display: flex; align-items: center; gap: 8px; }
.journal-page-form input { width: 65px; height: 42px; padding: 0 6px; border: 1px solid var(--color-line); border-radius: 0; background: transparent; color: var(--color-ink); font: inherit; text-align: center; }
.journal-pagination .journal-page-go { width: auto; min-width: 48px; padding: 0 10px; font-size: 14px; }
@media (max-width: 380px) { .journal-pagination { gap: 10px; } }
.library-main .article-title-block { max-width: 900px; text-align: left; margin: 0 auto; }
.library-main .article-title-block .journal-meta { justify-content: flex-start; font-size: 13px; }
.library-main .article-title-block h1 { font-family: var(--font-body); font-size: 44px; font-weight: 600; line-height: 1.35; overflow-wrap: anywhere; }
.library-main .article-title-block .library-deck { margin: 0; max-width: 740px; }
#article-detail .journal-body h2 { font-family: var(--font-body); font-size: 26px; font-weight: 600; line-height: 1.5; }
.journal-body > h2:first-child + p::first-letter { float: none; font: inherit; margin: 0; color: inherit; }
.article-media-credit { margin: 36px 0 0; padding-top: 16px; border-top: 1px solid var(--color-line); font-size: 12px; color: var(--editorial-muted); }
.article-media-credit summary { cursor: pointer; }
.article-media-credit p { font-size: 12px; line-height: 1.8; }
.science-hero h1 em,.footer-masthead em,.campus-hero h1 em { font-style: normal; }
@media(max-width:760px) {
 .library-main .journal-intro { padding-top: 32px; }
 .library-main .journal-masthead { padding-bottom: 26px; }
 #top .journal-masthead h1 { font-size: 30px; }
 .journal-tools { grid-template-columns: 1fr 1fr; gap: 12px 20px; }
 .journal-tools label { padding: 0 0 12px; border: 0; }
 .journal-tools label:first-child { border-bottom: 0; }
 .journal-tools label:last-child { padding-left: 0; }
 .journal-tools input { font-size: 16px; }
 #article-feed { grid-template-columns: 1fr; gap: 36px; }
 #article-feed .journal-row h3 { font-size: 21px; }
 #article-feed .journal-row-content { padding-top: 14px; }
 .journal-topic-link { gap: 14px; }
 .journal-topic-link strong { font-size: 14px; }
 .journal-topic-link span { font-size: 12px; }
 .library-main .article-title-block h1 { font-size: 30px; }
 #article-detail .journal-body h2 { font-size: 23px; }
}
.news-document-links{display:flex;flex-wrap:wrap;gap:12px 20px;font-size:13px;}
.news-document-links a{text-decoration:underline;text-underline-offset:4px;}
.news-story-image.news-document-image img{object-fit:contain;background:#fff;}

.tb-hub { border-top: 1px solid var(--color-stone); }
.tb-hub-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(180px, 290px); gap: 48px; align-items: start; margin-top: 30px; }
.tb-hub-copy h2 { max-width: 760px; margin: 0 0 24px; font: 600 38px/1.2 var(--font-display); }
.tb-hub-copy > p:not(.tb-hub-date) { max-width: 720px; font-size: 16px; line-height: 1.8; color: var(--editorial-muted); }
.tb-hub-date { margin: 24px 0 12px; font-size: 12px; color: var(--editorial-muted); }
.tb-hub-links { display: flex; flex-wrap: wrap; gap: 12px 20px; font-size: 13px; }
.tb-hub-links a { text-underline-offset: 4px; }
.tb-hub-articles { display: inline-block; margin-top: 28px; }
.tb-hub-document { margin: 0; }
.tb-hub-document img { display: block; width: 100%; height: auto; border: 1px solid var(--color-stone); }
.tb-hub-document figcaption { margin-top: 10px; color: var(--editorial-muted); font-size: 12px; line-height: 1.5; }
@media (max-width: 700px) {
  .tb-hub-layout { grid-template-columns: 1fr; gap: 28px; }
  .tb-hub-copy h2 { font-size: 28px; }
  .tb-hub-document { max-width: 290px; }
}