/* 51吃瓜 · 清透编辑纸面 */
:root{--bg:#F5FAF7;--white:#fff;--soft:#E7F3EC;--mutedbg:#DDEAE6;--ink:#142C2B;--body:#304643;--sub:#566D69;--line:rgba(17,87,79,.16);--brand:#0F766E;--brand-d:#075B56;--mint:#44C7B1;--dark:#091F20;--darkcard:#133238;--warm:#E5A476;--shadow:0 14px 38px rgba(8,42,40,.10);--radius:16px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);font:16px/1.75 system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--body);overflow-x:clip}body.panel-open{overflow:hidden}img{max-width:100%;height:auto;vertical-align:middle}button,input{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}a:hover{color:var(--brand-d)}:focus-visible{outline:3px solid #E5A476;outline-offset:3px}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--ink);line-height:1.28;letter-spacing:-.025em}h1{font-size:clamp(29px,3.2vw,39px)}h2{font-size:clamp(23px,2.2vw,28px)}h3{font-size:19px}.shell{width:min(1240px,calc(100% - 64px));margin-inline:auto}.skip-link{position:absolute;left:8px;top:-100px;padding:8px 15px;background:var(--dark);color:#fff;z-index:200}.skip-link:focus{top:8px;color:#fff}
.site-header{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40}.masthead-inner{height:74px;display:flex;align-items:center;gap:22px;justify-content:space-between}.site-logo{display:flex;align-items:center;gap:14px;flex-shrink:0}.logo-word{font-size:25px;line-height:1.1;color:var(--brand-d);white-space:nowrap;letter-spacing:-1px}.logo-word span{color:var(--ink)}.logo-img{height:33px;max-width:145px;width:auto;object-fit:contain}.logo-caption{font-size:12px;color:var(--sub);white-space:nowrap}.main-navigation{display:flex;align-items:center;gap:18px;margin-left:auto;white-space:nowrap}.main-navigation a{font-weight:650;font-size:14px;position:relative;padding:9px 0}.main-navigation a.active,.main-navigation a[aria-current]{color:var(--brand-d)}.main-navigation a.active:after{content:"";position:absolute;left:0;right:0;bottom:3px;height:2px;background:var(--brand)}.mast-actions{display:flex;align-items:center;gap:7px}.icon-button,.menu-button{border:1px solid var(--line);background:var(--white);color:var(--ink);height:44px;min-width:44px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;gap:8px}.menu-button{padding:0 13px;font-size:14px;font-weight:700}.search-glyph{width:17px;height:17px;border-radius:50%;border:2px solid currentColor;position:relative;display:inline-block}.search-glyph:after{content:"";position:absolute;right:-6px;bottom:-4px;width:8px;height:2px;background:currentColor;transform:rotate(45deg);border-radius:2px}.channel-rail{background:var(--soft);border-bottom:1px solid var(--line)}.rail-inner{height:45px;display:flex;align-items:center;min-width:0;gap:18px}.rail-label{font-size:12px;font-weight:750;color:var(--brand-d);white-space:nowrap}.rail-links{display:flex;align-items:center;gap:26px;white-space:nowrap;overflow-x:auto;scrollbar-width:thin;min-width:0;height:100%}.rail-links a{font-size:13px;font-weight:600;display:inline-flex;align-items:center}.rail-links a[aria-current]{color:var(--brand-d);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:5px}.page-main{padding-top:30px;padding-bottom:70px}.eyebrow{font-size:12px;letter-spacing:.07em;color:var(--brand-d);text-transform:uppercase;font-weight:800}.lead{font-size:16px;line-height:1.85;color:var(--sub)}.midpoint{margin:0 4px;color:#8aa89d}.crumb{display:flex;gap:12px;align-items:center;color:var(--sub);font-size:13px;margin-bottom:17px}.crumb a{color:var(--brand-d)}.crumb span:last-child{overflow-wrap:anywhere}
.hero-cover{display:grid;grid-template-columns:1fr 1.65fr;gap:25px;align-items:center;background:var(--white);border:1px solid var(--line);border-radius:20px;padding:32px;box-shadow:var(--shadow)}.hero-copy h1{font-size:clamp(34px,4vw,48px);margin:10px 0 18px}.hero-copy .lead{font-size:16px}.hero-action{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.primary-button,.secondary-button{min-height:44px;padding:10px 17px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;font-weight:750;font-size:14px;line-height:1.4}.primary-button{background:var(--brand);color:#fff}.primary-button:hover{background:var(--brand-d);color:#fff}.secondary-button{background:#fff;border-color:var(--line);color:var(--ink)}.secondary-button:hover{border-color:var(--brand);color:var(--brand-d)}.media-box{position:relative;background:linear-gradient(130deg,#cbe9df,#e8f4ed 45%,#dceeea);overflow:hidden;border:1px solid var(--line);border-radius:15px;min-height:145px;display:flex;align-items:center;justify-content:center}.media-box img{width:100%;height:auto;max-height:100%;object-fit:contain;object-position:center;display:block}.media-box.hero-media img{max-height:400px;width:auto;max-width:100%}.media-box.page-media img{max-height:270px;width:auto;max-width:100%}.media-box.small img{max-height:190px;width:auto;max-width:100%}.media-box.app-media img{max-height:420px;width:auto;max-width:100%}.media-box.hero-media{min-height:250px;max-height:400px}.hero-media img{max-height:400px}.media-box.small{min-height:120px;max-height:190px}.media-box.page-media{min-height:180px;max-height:270px}.media-box.app-media{min-height:220px;max-height:420px}.media-art{width:100%;height:100%;min-height:inherit;position:absolute;inset:0;overflow:hidden;background:radial-gradient(circle at 84% 25%,rgba(68,199,177,.38),transparent 29%),linear-gradient(120deg,#cfe7df,#e6f3ec)}.art-ring{position:absolute;width:42%;aspect-ratio:1;border:1px solid rgba(7,91,86,.22);border-radius:100%;top:-25%;right:6%}.art-line{position:absolute;height:1px;width:75%;background:rgba(7,91,86,.18);transform:rotate(-22deg);top:65%;left:3%}.art-circle{width:100px;height:100px;border-radius:100%;background:rgba(15,118,110,.10);position:absolute;left:8%;bottom:-28px}.media-box:hover .art-circle{transform:translateY(-3px);transition:transform .3s}
.block-section{margin-top:60px}.section-heading{display:flex;align-items:flex-start;gap:18px;margin-bottom:22px}.section-heading h2{margin:0 0 7px}.section-heading p{margin:0;font-size:14px;color:var(--sub)}.section-index{font-size:14px;font-weight:900;border-top:3px solid var(--brand);padding-top:4px;color:var(--brand-d)}.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.topic-card{border-radius:var(--radius);background:#fff;border:1px solid var(--line);padding:22px;min-height:156px}.topic-card strong{display:block;font-size:20px;color:var(--ink);margin:10px 0}.topic-card p{font-size:14px;color:var(--sub);margin:0;line-height:1.7}.topic-card:hover,.story-card:hover{border-color:rgba(15,118,110,.45);box-shadow:0 10px 26px rgba(8,42,40,.07)}.topic-n{font-size:12px;color:var(--brand);font-weight:800}.editorial-feature{display:grid;grid-template-columns:1.35fr 1fr;gap:20px}.feature-lead{border-radius:var(--radius);background:var(--white);padding:24px;border:1px solid var(--line)}.feature-lead h3{font-size:24px;margin:17px 0 8px}.feature-lead>p{color:var(--sub)}.feature-side{display:flex;flex-direction:column;gap:14px}.story-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;min-width:0}.story-card .card-inner{padding:20px}.story-card h3{font-size:18px;overflow-wrap:anywhere;margin:9px 0}.story-card .card-inner>p:not(.eyebrow){font-size:14px;color:var(--sub);margin-bottom:15px}.story-card.compact .card-inner{padding:15px 20px}.story-card.compact h3{font-size:16px}.story-card.compact p:not(.eyebrow){display:none}.story-card.visual .media-box{border-radius:0;border:0}.text-link{font-size:13px;font-weight:800;color:var(--brand-d)}.article-lines{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.article-line{padding:15px 21px;display:grid;grid-template-columns:38px minmax(0,1fr) 24px;gap:15px;align-items:center;border-bottom:1px solid var(--line);min-width:0}.article-line:last-child{border:0}.line-no{font-size:13px;color:var(--brand);font-weight:900}.article-line strong{display:block;font-size:17px;color:var(--ink);line-height:1.45}.article-line small{display:block;color:var(--sub);font-size:13px;margin-top:5px;line-height:1.55}.line-arrow{color:var(--brand);font-size:21px}.dark-band{background:var(--dark);color:#E5F2ED;border-radius:18px;padding:26px 28px}.dark-band h2,.dark-band h3{color:#fff}.dark-band .eyebrow{color:var(--mint)}.dark-band .lead{color:#D8EAE5}.dark-band a{color:#D8EAE5}.dark-band a:hover{color:#fff}.dark-band .article-lines{background:transparent;border-color:rgba(255,255,255,.18)}.dark-band .article-line{border-color:rgba(255,255,255,.15)}.dark-band .article-line strong{color:#fff}.dark-band .article-line small{color:#B7CCC8}.dark-band .line-no{color:var(--mint)}.two-column{display:grid;grid-template-columns:1fr 1fr;gap:22px}.three-column{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.paired-story{background:#fff;padding:23px;border-radius:15px;border:1px solid var(--line)}.paired-story h3{font-size:21px;margin:16px 0 10px}.paired-story p{font-size:15px;color:var(--sub)}.thin-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.step-card{padding:18px;background:#fff;border-radius:12px;border:1px solid var(--line)}.step-card b{font-size:22px;color:var(--brand);display:block}.step-card h3{font-size:16px;margin:9px 0}.step-card p{font-size:14px;margin:0;color:var(--sub)}.mint-paper{background:#E7F3EC;padding:28px;border-radius:20px}.mint-paper .section-heading{margin-bottom:18px}.layout-split{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center}.layout-split .media-box{min-height:215px}.callout{border-left:4px solid var(--brand);padding:14px 20px;background:#fff;border-radius:0 12px 12px 0}.callout p{margin:0;color:var(--sub)}.brand-story{display:grid;grid-template-columns:2fr 1fr;gap:24px;align-items:center;border-radius:18px;padding:30px;background:linear-gradient(115deg,#133238,#0d2728);color:#e3f3ed}.brand-story h2{color:#fff}.brand-story p{color:#cfe2db}.brand-story .media-box{border-color:rgba(255,255,255,.12)}
.page-intro{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;display:grid;grid-template-columns:1.35fr 1fr;align-items:center;gap:25px}.page-intro h1{margin:0 0 16px}.page-intro .lead{margin:0}.page-intro.page-intro-deep{background:var(--dark)}.page-intro.page-intro-deep h1,.page-intro.page-intro-deep .crumb,.page-intro.page-intro-deep .lead{color:#f0f7f3}.page-intro.page-intro-deep .eyebrow{color:var(--mint)}.page-intro.page-intro-deep .crumb a{color:var(--mint)}.editorial-grid{display:grid;grid-template-columns:1.7fr .85fr;gap:26px}.prose-panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px}.prose-panel h2{font-size:23px;margin:0 0 12px}.prose-panel p{color:var(--body);line-height:1.84}.prose-panel p:last-child{margin-bottom:0}.prose-panel+.prose-panel{margin-top:16px}.sidebar-panel{background:var(--soft);border-radius:16px;padding:22px;align-self:start}.sidebar-panel h2{font-size:18px}.sidebar-panel a{display:block;padding:9px 0;border-bottom:1px solid var(--line);font-size:14px;font-weight:700}.sidebar-panel a:last-child{border:0}.section-stack{margin-top:34px}.section-stack .section-heading{margin-bottom:14px}.timeline-list{display:grid;gap:0;border-left:2px solid var(--brand);margin-left:12px;padding-left:30px}.timeline-node{position:relative;padding:0 0 26px}.timeline-node:before{content:"";position:absolute;top:7px;left:-38px;width:13px;height:13px;background:var(--brand);border-radius:50%;box-shadow:0 0 0 4px #dff0e9}.timeline-node h3{margin:0 0 9px}.timeline-node p{margin:0;color:var(--sub)}.note-line{font-size:14px;color:var(--sub)}.feature-tags{display:flex;gap:9px;flex-wrap:wrap}.feature-tags a,.feature-tags span{display:inline-flex;border:1px solid var(--line);border-radius:7px;padding:4px 10px;font-size:12px;background:var(--soft);color:var(--brand-d);font-weight:700}.article-layout{display:grid;grid-template-columns:minmax(0,780px) 250px;gap:36px;justify-content:center}.article-body{background:#fff;padding:36px;border-radius:17px;border:1px solid var(--line)}.article-body h1{font-size:clamp(27px,3vw,38px)}.article-body .summary{font-size:18px;color:var(--sub);border-left:3px solid var(--brand);padding-left:15px;line-height:1.75}.article-body h2{margin-top:32px}.article-body p{font-size:17px;line-height:1.88}.article-body .origin-note{color:var(--sub);font-size:13px;border-top:1px solid var(--line);padding-top:18px}.article-side{align-self:start;position:sticky;top:105px}.article-side .sidebar-panel{margin-bottom:15px}.search-form-page{display:flex;gap:9px;background:#fff;padding:12px;border-radius:12px;border:1px solid var(--line);max-width:720px}.search-form-page input{flex:1;min-width:0;border:0;padding:9px 12px;outline-offset:2px}.search-results{margin-top:24px;max-width:950px}.result-header{display:flex;align-items:center;justify-content:space-between;gap:15px}.result-pill{font-size:13px;color:var(--sub)}.faq-list details{border:1px solid var(--line);background:#fff;border-radius:12px;padding:17px 22px;margin-bottom:12px}.faq-list summary{font-size:17px;font-weight:800;cursor:pointer;color:var(--ink)}.faq-list details p{margin:14px 0 0;color:var(--body)}.service-links{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}.notice-card{background:var(--soft);border:1px solid var(--line);padding:20px 24px;border-radius:13px}.notice-card h3{margin:0 0 8px}.notice-card p{margin:0}.related-footer{margin-top:36px;padding:25px;border:1px solid var(--line);border-radius:15px;background:#fff}.related-footer h2{font-size:20px}.related-footer a{display:inline-block;margin:3px 16px 4px 0;color:var(--brand-d);font-weight:700}
.site-footer{background:var(--dark);color:#d8eae5;border-top:4px solid var(--brand);padding:54px 0 28px}.footer-lead{display:flex;align-items:flex-start;justify-content:space-between;gap:40px;padding-bottom:25px;border-bottom:1px solid rgba(255,255,255,.15)}.footer-brand{max-width:480px}.footer-word{font-size:28px;font-weight:900;color:#fff;display:inline-block;margin-right:15px}.footer-brand>span{font-size:12px;letter-spacing:.1em;color:var(--mint)}.footer-brand p,.footer-ethics{font-size:14px;color:#bfd8d0}.footer-ethics{max-width:350px}.footer-columns{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding:30px 0}.footer-columns h2{font-size:15px;color:#fff;margin-bottom:10px}.footer-columns a{display:block;font-size:13px;color:#c5d9d3;padding:4px 0}.footer-columns a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:20px;font-size:12px;display:flex;gap:20px;justify-content:space-between;color:#acc5bd}
.panel-backdrop{position:fixed;inset:0;background:rgba(3,17,18,.57);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s;z-index:60}.panel-backdrop.visible{opacity:1;visibility:visible;pointer-events:auto}.site-drawer,.search-panel{position:fixed;z-index:70;visibility:hidden;opacity:0;pointer-events:none;background:#fff;box-shadow:var(--shadow);transition:transform .22s,opacity .22s,visibility .22s}.site-drawer{top:0;right:0;height:100dvh;width:min(370px,88vw);transform:translateX(102%);display:flex;flex-direction:column}.site-drawer.visible{visibility:visible;opacity:1;pointer-events:auto;transform:translateX(0)}.drawer-top,.search-panel-top{display:flex;align-items:center;justify-content:space-between;padding:17px 24px;border-bottom:1px solid var(--line);font-size:20px;color:var(--ink)}.close-control{font-size:27px}.drawer-body{overflow-y:auto;padding:10px 24px 35px}.drawer-group{margin-top:22px}.drawer-group h2{color:var(--brand-d);font-size:13px;margin:0 0 9px}.drawer-group a{display:inline-block;width:49%;padding:7px 4px;font-size:14px}.search-panel{top:10vh;left:50%;width:min(710px,calc(100% - 32px));transform:translate(-50%,-24px);border-radius:16px;overflow:hidden}.search-panel.visible{visibility:visible;opacity:1;pointer-events:auto;transform:translate(-50%,0)}.search-panel form{padding:26px 28px 7px}.search-panel label{font-weight:700;font-size:14px}.search-field{display:flex;gap:10px;margin-top:10px}.search-field input{flex:1;min-width:0;padding:10px 12px;border:1px solid var(--line);border-radius:9px}.search-hint{padding:0 28px 25px;color:var(--sub);font-size:13px}.mobile-bottom{display:none}
@media (max-width:1180px){.logo-caption{display:none}.main-navigation{gap:12px}.main-navigation a{font-size:13px}.masthead-inner{gap:12px}.menu-text{display:none}}@media(max-width:980px){.main-navigation{display:none}.shell{width:min(100% - 40px,1240px)}.hero-cover{grid-template-columns:1fr 1.3fr}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.article-layout{grid-template-columns:minmax(0,1fr) 220px;gap:20px}.thin-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:700px){.shell{width:calc(100% - 32px)}.masthead-inner{height:60px}.page-main{padding-top:17px;padding-bottom:100px}.logo-img{max-width:127px;height:30px}.logo-word{font-size:22px}.menu-button{padding:0;min-width:44px}.rail-inner{height:42px;gap:12px}.rail-label{display:none}.rail-links{gap:20px}.rail-links a{font-size:13px}.hero-cover,.page-intro,.layout-split,.brand-story,.editorial-feature,.editorial-grid,.article-layout,.two-column{grid-template-columns:1fr}.hero-cover{padding:22px;gap:19px}.hero-cover .media-box{grid-row:2;min-height:175px}.hero-cover h1{font-size:35px}.page-intro{padding:21px;gap:20px}.page-intro .media-box{min-height:170px}.block-section{margin-top:36px}.topic-grid{gap:12px}.topic-card{padding:16px;min-height:143px}.topic-card strong{font-size:17px}.topic-card p{font-size:13px}.section-heading{gap:12px}.section-heading h2{font-size:22px}.three-column{grid-template-columns:1fr}.thin-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-lead,.paired-story,.prose-panel{padding:19px}.editorial-feature{gap:15px}.mint-paper{padding:20px}.dark-band{padding:22px 18px}.media-box{min-height:135px}.media-box.hero-media{max-height:240px}.media-box.hero-media img{max-height:240px}.media-box.page-media{max-height:210px}.media-box.page-media img{max-height:210px}.article-body{padding:22px 19px}.article-body p{font-size:16px}.article-side{position:static}.footer-lead{flex-direction:column;gap:12px}.footer-columns{grid-template-columns:repeat(2,minmax(0,1fr));gap:25px}.footer-bottom{flex-direction:column;gap:8px}.search-field{flex-direction:column}.search-field button{width:100%}.search-panel form{padding:19px}.search-hint{padding:0 19px 20px}.mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(4,1fr);bottom:0;left:0;right:0;z-index:35;padding-bottom:env(safe-area-inset-bottom,0px);min-height:57px;background:#fff;border-top:1px solid var(--line);box-shadow:0 -5px 15px rgba(8,42,40,.07)}.mobile-bottom a,.mobile-bottom button{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:0;min-height:56px;border:0;background:transparent;color:var(--sub);font-size:12px}.mobile-bottom a[aria-current]{color:var(--brand-d);font-weight:800}.mobile-bottom span{font-size:20px;line-height:1.1}.result-header{flex-wrap:wrap}.search-form-page{flex-direction:column}.footer-columns{padding-bottom:30px}}
@media(max-width:375px){.topic-grid{grid-template-columns:1fr}.topic-card{min-height:0}.hero-action{flex-direction:column}.hero-action a{width:100%}.article-line{grid-template-columns:26px minmax(0,1fr) 15px;gap:9px;padding:13px}.article-line strong{font-size:15px}.line-arrow{font-size:15px}.footer-columns{gap:14px}.drawer-group a{width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}