/* 吃瓜网响应式视觉系统 */
:root{--green:#2F7D5B;--green-dark:#1F2A26;--pink:#D96C8A;--bg:#F7F8F5;--bg-soft:#EEF3EF;--text:#28312D;--muted:#6B756F;--orange:#E58A3A;--line:#DCE5DF;--white:#fff;--shadow:0 14px 38px rgba(31,42,38,.08);--radius:22px;--small-radius:14px;--shell:min(1180px,calc(100% - 40px));}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75}img{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}a:hover{color:var(--green)}button,input{font:inherit}.shell{width:var(--shell);margin-inline:auto}.skip-link{position:absolute;left:-9999px;top:10px;background:var(--green-dark);color:#fff;padding:10px 16px;z-index:100}.skip-link:focus{left:10px}.site-header{position:sticky;top:0;z-index:50;background:rgba(247,248,245,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(47,125,91,.12)}.header-row{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--green-dark)}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:13px;background:var(--green);color:#fff;box-shadow:0 6px 16px rgba(47,125,91,.18)}.primary-nav{display:flex;align-items:center;gap:8px}.primary-nav a{padding:9px 13px;border-radius:11px;color:var(--muted);font-weight:650}.primary-nav a:hover,.primary-nav a.active{background:var(--bg-soft);color:var(--green-dark)}.menu-button{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 12px;color:var(--text)}.site-main{padding-bottom:70px}.lead{display:grid;grid-template-columns:1.15fr .85fr;gap:46px;align-items:center;padding-top:54px;padding-bottom:54px}.eyebrow{margin:0 0 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ease}.story-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.story-card__media{display:block;overflow:hidden;background:var(--bg-soft)}.story-card__media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease}.story-card:hover .story-card__media img{transform:scale(1.025)}.story-card__body{padding:19px}.story-card__meta{display:flex;justify-content:space-between;gap:12px;margin-bottom:10px;color:var(--muted);font-size:13px}.story-card__meta span{color:var(--pink);font-weight:750}.story-card h3{margin:0 0 8px;font-size:20px;line-height:1.35;color:var(--green-dark)}.story-card p{margin:0;color:var(--muted);font-size:14px}.story-card--feature{grid-row:span 2}.story-card--feature h3{font-size:26px}.story-card--feature .story-card__media img{aspect-ratio:16/9}.tag-list{display:flex;flex-wrap:wrap;gap:7px;list-style:none;padding:0;margin:14px 0 0}.tag-list li,.pill{display:inline-flex;align-items:center;padding:5px 9px;border-radius:999px;background:var(--bg-soft);color:var(--green);font-size:12px;font-weight:700}.split-section{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(250px,.6fr);gap:40px;padding-block:48px}.compact-list{border-top:1px solid var(--line)}.compact-list article{padding:20px 0;border-bottom:1px solid var(--line)}.compact-list article>div{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:13px}.compact-list h3{margin:8px 0 5px;font-size:22px;line-height:1.35}.compact-list p{margin:0;color:var(--muted)}.side-panel{align-self:start;padding:24px;border-radius:var(--radius);background:var(--bg-soft);border:1px solid var(--line)}.side-panel h2{font-size:20px}.topic-index{display:grid;gap:10px}.topic-index__item{display:block;padding:13px;border-radius:12px;background:rgba(255,255,255,.76);border:1px solid transparent}.topic-index__item:hover{border-color:rgba(47,125,91,.22)}.topic-index__item span{display:block;font-weight:780;color:var(--green-dark)}.topic-index__item small{display:block;margin-top:4px;color:var(--muted);line-height:1.55}.accent-band{margin-block:36px 64px;background:var(--green-dark);color:#eef7f1}.accent-band__inner{display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:center;padding-block:48px}.accent-band h2{color:#fff}.accent-band p{color:#cbd9d1;max-width:720px}.accent-band .eyebrow{color:#f0ad77}.accent-band img{border-radius:24px;aspect-ratio:16/10;object-fit:cover}.three-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding-block:20px}.three-columns>div{padding:26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}.three-columns h2{font-size:25px}.three-columns p{color:var(--muted)}.breadcrumbs{padding-top:22px}.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0;color:var(--muted);font-size:13px}.breadcrumbs li:not(:last-child)::after{content:"/";margin-left:8px;color:#a4ada8}.page-intro{display:grid;grid-template-columns:1.15fr .85fr;gap:42px;align-items:center;padding-block:38px 56px}.page-intro h1{font-size:clamp(34px,4.8vw,56px)}.page-intro--dark{background:var(--green-dark);padding:36px;border-radius:30px;margin-top:26px}.page-intro--dark h1{color:#fff}.page-intro--dark p{color:#cad7d0}.page-intro--dark .eyebrow{color:#f0ad77}.timeline-section,.context-grid{padding-block:26px 60px}.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.evidence-guide{display:grid;grid-template-columns:1.15fr .85fr;gap:26px;padding-block:10px 56px}.evidence-guide>div{padding:28px;border-radius:var(--radius);background:#fff;border:1px solid var(--line)}.evidence-guide ol{padding-left:22px}.evidence-guide li{margin-bottom:12px}.note-card{background:linear-gradient(145deg,#fff7ef,#fff)!important;border-color:#f2ddca!important}.comparison{padding-block:20px 55px}.comparison-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.comparison-grid article{padding:24px;border-radius:18px;background:var(--bg-soft);border:1px solid var(--line)}.comparison-grid h3{margin-top:0;color:var(--green-dark)}.comparison-grid p{margin-bottom:0;color:var(--muted)}.community-layout{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(270px,.65fr);gap:32px;padding-bottom:48px}.thread-panel{align-self:start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}.thread-panel>h2{font-size:22px}.thread-panel article{padding:15px 0;border-top:1px solid var(--line)}.thread-panel article:first-of-type{border-top:0}.thread-panel span{font-size:12px;color:var(--pink);font-weight:750}.thread-panel h3{margin:5px 0;font-size:16px;line-height:1.45}.thread-panel p{margin:0;color:var(--muted);font-size:13px}.community-notes{padding:30px;border-left:5px solid var(--pink);background:#fff;border-radius:0 var(--radius) var(--radius) 0}.community-notes h2{font-size:27px}.community-notes p{margin-bottom:0;color:var(--muted)}.app-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;padding-bottom:48px}.app-grid .section-heading{grid-column:1/-1}.app-grid article{padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}.app-grid h3{margin-top:0;color:var(--green-dark)}.app-grid p{margin-bottom:0;color:var(--muted)}.mobile-note{display:grid;grid-template-columns:.8fr 1.2fr;gap:34px;align-items:center;padding:32px;background:var(--bg-soft);border-radius:28px}.mobile-note img{border-radius:20px;aspect-ratio:4/3;object-fit:cover}.mobile-note p{color:var(--muted)}.article{max-width:900px;padding-top:34px}.article-header{text-align:center}.article-header .eyebrow{margin-bottom:14px}.article-header h1{font-size:clamp(34px,5vw,58px)}.article-deck{margin:18px auto 0}.article-meta{display:flex;justify-content:center;gap:16px;color:var(--muted);font-size:14px;margin-top:18px}.article-figure{margin:34px 0}.article-figure img{width:100%;max-height:540px;object-fit:cover;border-radius:26px}.article-figure figcaption{text-align:center;color:var(--muted);font-size:13px;margin-top:9px}.article-body{max-width:760px;margin:0 auto}.article-body p{font-size:18px;line-height:1.95;margin:0 0 22px}.article-body h2{margin:44px 0 14px;color:var(--green-dark);font-size:28px;line-height:1.3}.article-footer{max-width:760px;margin:34px auto;border-top:1px solid var(--line);padding-top:18px}.related{padding-top:50px}.not-found{min-height:58vh;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;max-width:860px}.not-found h1{font-size:clamp(40px,6vw,68px)}.not-found>p:not(.eyebrow){font-size:18px;color:var(--muted)}.site-footer{background:#e9efeb;border-top:1px solid var(--line);padding-top:44px}.footer-grid{display:grid;grid-template-columns:1.5fr .75fr .75fr;gap:40px;padding-bottom:34px}.footer-grid strong{font-size:22px;color:var(--green-dark)}.footer-grid p{max-width:560px;color:var(--muted)}.footer-grid h2{font-size:15px;margin:0 0 10px;color:var(--green-dark)}.footer-grid a{display:block;margin:6px 0;color:var(--muted)}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:18px 0;border-top:1px solid #d4dfd8;color:var(--muted);font-size:13px}
@media (max-width:1000px){.feature-grid__items{grid-template-columns:1fr 1fr}.story-card--feature{grid-row:auto;grid-column:1/-1}.story-grid{grid-template-columns:1fr 1fr}.lead,.page-intro,.accent-band__inner{grid-template-columns:1fr}.lead__visual,.page-intro img{max-width:720px}.split-section,.community-layout{grid-template-columns:1fr}.side-panel,.thread-panel{position:static}.three-columns{grid-template-columns:1fr 1fr}.comparison-grid{grid-template-columns:1fr 1fr}}
@media (max-width:760px){:root{--shell:min(100% - 28px,1180px)}.header-row{min-height:64px}.menu-button{display:block}.primary-nav{display:none;position:absolute;top:64px;left:14px;right:14px;flex-direction:column;align-items:stretch;padding:10px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.primary-nav.open{display:flex}.lead{padding-top:35px;gap:28px}.lead h1,.page-intro h1{font-size:38px}.feature-grid__items,.story-grid,.three-columns,.comparison-grid,.app-grid{grid-template-columns:1fr}.story-card--feature{grid-column:auto}.split-section{padding-top:28px}.accent-band{margin-bottom:44px}.accent-band__inner{padding-block:34px}.evidence-guide{grid-template-columns:1fr}.page-intro--dark{padding:25px}.mobile-note{grid-template-columns:1fr;padding:22px}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column}.article-body p{font-size:17px}.article-header{text-align:left}.article-meta{justify-content:flex-start}}
@media (max-width:460px){.button-row{align-items:stretch}.button{width:100%}.lead__visual:before{inset:-10px 10px 10px -10px}.story-card h3{font-size:19px}.page-intro{gap:26px}.page-intro--dark{width:calc(100% - 20px)}.compact-list h3{font-size:20px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.story-card,.story-card__media img{transition:none}}
:focus-visible{outline:3px solid var(--orange);outline-offset:3px}

.verification-reference{padding-block:10px 60px}.reference-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.reference-grid details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 16px}.reference-grid summary{cursor:pointer;font-weight:760;color:var(--green-dark);padding:14px 0}.reference-grid p{margin:0 0 16px;color:var(--muted);font-size:14px}.reference-grid details[open]{box-shadow:0 8px 22px rgba(31,42,38,.05)}@media(max-width:760px){.reference-grid{grid-template-columns:1fr}}