/* 每日大赛 · 数字竞演画报视觉系统 */
:root{--red:#C73532;--red-dark:#A82725;--gold:#B18A49;--ink:#19232C;--paper:#FAF8F3;--warm:#EEEAE2;--text:#22272B;--muted:#626970;--line:#DAD5CA;--sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;--width:1240px}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--text);font:16px/1.7 var(--sans);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{color:var(--red-dark)}button,input{font:inherit}img{max-width:100%;height:auto;display:block}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.28;letter-spacing:-.035em}h1{font-size:clamp(2.5rem,5vw,4.6rem)}h2{font-size:clamp(1.65rem,2.8vw,2.55rem)}h3{font-size:1.3rem}p{margin-bottom:1rem}::selection{background:var(--red);color:white}:focus-visible{outline:3px solid var(--red);outline-offset:4px}.shell{width:min(var(--width),calc(100% - 64px));margin-inline:auto}.skip-link{position:absolute;left:16px;top:-120px;z-index:100;background:var(--ink);color:white;padding:12px 16px}.skip-link:focus{top:12px}.eyebrow,.micro,.topline,.nav-caption,.lead-meta,.number-marker,.video-number,.story-index,.topic-no,.domain-label,.feature-tag,.feature-copy .micro,.footer-bottom{font-variant-numeric:tabular-nums}.eyebrow{color:var(--red-dark);font-size:.75rem;font-weight:850;letter-spacing:.17em;line-height:1.5;text-transform:uppercase;margin-bottom:12px}.micro{font-size:.72rem;color:var(--muted);font-weight:750;letter-spacing:.105em;line-height:1.5;text-transform:uppercase;margin:0 0 12px}.topline{background:var(--ink);color:#DDD8CE;font-size:.68rem;letter-spacing:.14em;font-weight:650}.topline-inner{display:flex;justify-content:space-between;padding:9px 0;gap:16px}.topline b{color:var(--gold)}.site-header{border-bottom:1px solid var(--line)}.masthead{display:flex;align-items:center;justify-content:space-between;padding:24px 0 20px}.brand-link{display:flex;gap:14px;align-items:center;color:var(--ink)}.brand-link img{width:58px;height:58px;object-fit:contain}.brand-link span{display:flex;flex-direction:column}.brand-link strong{font-size:2rem;letter-spacing:-.07em;line-height:1.15;font-weight:900}.brand-link small{color:var(--red);font-size:.62rem;letter-spacing:.28em;font-weight:850;margin-top:5px}.masthead-slogan{text-align:right;color:var(--ink);font-size:.87rem;font-weight:850;line-height:1.55;border-left:2px solid var(--gold);padding-left:18px}.masthead-slogan span{font-size:.73rem;color:var(--muted);font-weight:500}.site-nav{border-top:1px solid var(--line)}.nav-inner{display:flex;align-items:center;gap:0;min-height:55px}.nav-inner>a{font-size:.91rem;font-weight:800;padding:15px 28px 15px 0;margin-right:20px;position:relative;white-space:nowrap}.nav-inner>a[aria-current=page]{color:var(--red-dark)}.nav-inner>a[aria-current=page]::after{content:"";position:absolute;bottom:-1px;left:0;width:calc(100% - 28px);height:3px;background:var(--red)}.nav-caption{margin-left:auto;color:var(--gold);font-size:.7rem;letter-spacing:.18em;font-weight:850}.page-main{padding-top:28px;padding-bottom:86px}.lead-grid{display:grid;grid-template-columns:1.12fr .94fr .49fr;gap:22px;min-height:505px;border-bottom:1px solid var(--ink);padding-bottom:35px}.lead-copy{display:flex;flex-direction:column;padding:25px 18px 8px 0}.lead-copy h1{color:var(--ink);margin:8px 0 24px;font-weight:900;letter-spacing:-.065em;max-width:560px}.lead-copy h1 span{display:block;color:var(--red);font-size:.47em;font-weight:850;letter-spacing:-.025em;margin-top:10px}.lead-intro{font-size:1.05rem;line-height:1.95;color:#485059;max-width:500px}.lead-actions{display:flex;align-items:center;gap:25px;flex-wrap:wrap;margin-top:18px}.primary-link{display:inline-flex;align-items:center;justify-content:space-between;gap:38px;background:var(--red);padding:13px 19px;color:white!important;font-size:.85rem;letter-spacing:.03em;font-weight:800;border:1px solid var(--red);transition:background .2s}.primary-link:hover{background:var(--red-dark)}.subtle-link{font-size:.85rem;font-weight:800;border-bottom:1px solid var(--gold);padding-bottom:4px}.lead-meta{margin-top:auto;display:flex;gap:14px;align-items:center;color:var(--muted);letter-spacing:.09em;font-size:.66rem;font-weight:750;padding-top:45px}.lead-meta span:first-child{font-weight:900;color:var(--red)}.lead-visual{min-height:465px;position:relative;overflow:hidden;background:var(--warm)}.lead-visual>img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;aspect-ratio:4/5}.lead-stamp{position:absolute;bottom:0;left:0;background:var(--red);color:white;padding:10px 22px;display:flex;align-items:center;gap:15px}.lead-stamp span{font-weight:900;font-size:2.25rem;line-height:1}.lead-stamp small{letter-spacing:.12em;font-size:.6rem}.lead-aside{border-top:4px solid var(--gold);padding:24px 0 0 4px;align-self:end}.lead-aside h2{font-size:1.35rem;line-height:1.45;color:var(--ink);margin-bottom:18px}.lead-aside>p:not(.micro){font-size:.82rem;color:var(--muted);line-height:1.9}.focus-categories{display:flex;gap:7px;flex-wrap:wrap;margin-top:20px}.focus-categories span{border:1px solid var(--line);font-size:.66rem;font-weight:750;padding:5px 9px}.site-section{margin-top:64px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;border-top:2px solid var(--ink);padding-top:19px;margin-bottom:25px}.section-heading h2{margin:0;font-weight:900;color:var(--ink)}.inline-link{flex-shrink:0;color:var(--red-dark);font-size:.78rem;font-weight:850;border-bottom:1px solid currentColor;padding:0 0 5px}.feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.feature-card{min-width:0;border-bottom:1px solid var(--line);padding-bottom:15px}.feature-card--wide{grid-column:span 2}.feature-image{position:relative;aspect-ratio:4/4.5;overflow:hidden;background:var(--warm)}.feature-card--wide .feature-image{aspect-ratio:1.56}.feature-image img{height:100%;width:100%;object-fit:cover;transition:transform .55s ease}.feature-card:hover .feature-image img{transform:scale(1.035)}.feature-tag{position:absolute;left:0;bottom:0;background:var(--ink);color:white;font-size:.65rem;letter-spacing:.07em;font-weight:800;padding:6px 12px}.feature-copy{padding-top:16px}.feature-copy h3{color:var(--ink);margin-bottom:10px;font-size:1.16rem;font-weight:900}.feature-card--wide h3{font-size:1.45rem}.feature-copy>p:not(.micro){font-size:.85rem;line-height:1.85;color:var(--muted);margin:0}.watch-strip{background:var(--warm);padding:24px 28px 35px;margin-inline:-28px}.watch-strip .section-heading{margin-top:0}.watch-preview{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.preview-image{height:255px;position:relative;overflow:hidden;background:#DDD5C8}.preview-image img{width:100%;height:100%;object-fit:cover}.number-marker{position:absolute;top:0;left:0;color:white;background:var(--red);padding:10px 14px;font-size:1rem;font-weight:900}.preview-item h3{font-size:1.17rem;font-weight:900;margin:0 0 9px}.preview-item>div:nth-child(2){padding:13px 1px 0}.preview-item p:not(.micro){font-size:.83rem;color:var(--muted);line-height:1.85}.ranking-section{display:grid;grid-template-columns:1fr 1.65fr;gap:45px;border-top:2px solid var(--ink);padding-top:25px}.ranking-intro h2{font-size:2.1rem}.ranking-intro>p:last-child{color:var(--muted);line-height:1.9;font-size:.89rem}.ranking-list{border-top:1px solid var(--line)}.ranking-line{display:grid;grid-template-columns:65px 1fr 70px;gap:20px;border-bottom:1px solid var(--line);padding:19px 0;align-items:start}.ranking-line>b{font-size:2.55rem;line-height:1;color:var(--gold);font-weight:900;letter-spacing:-.08em}.ranking-line h3{font-size:1.08rem;margin:0 0 6px}.ranking-line p{font-size:.82rem;color:var(--muted);margin:0}.ranking-line>span{color:var(--red);font-size:.63rem;letter-spacing:.1em;text-align:right;font-weight:850}.trends-home{display:grid;grid-template-columns:37% 1fr;gap:30px}.topic-visual{position:relative;background:var(--warm);min-height:480px}.topic-visual img{width:100%;height:100%;position:absolute;inset:0;object-fit:cover}.topic-visual>p{position:absolute;bottom:0;left:0;right:0;background:var(--ink);color:white;margin:0;padding:17px 20px;font-size:.7rem;letter-spacing:.12em;font-weight:850;display:flex;justify-content:space-between}.topic-list{border-top:1px solid var(--line)}.topic-row{display:grid;grid-template-columns:50px 1fr;gap:16px;padding:25px 0;border-bottom:1px solid var(--line)}.topic-no{color:var(--gold);font-size:1.5rem;line-height:1;font-weight:900}.topic-row h3{font-size:1.26rem;margin:0 0 10px}.topic-row p:last-child{font-size:.86rem;color:var(--muted);margin:0}.notebook-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.notebook-card{border-left:3px solid var(--gold);background:#F2EEE6;padding:26px 24px;min-height:220px}.notebook-card h3{font-weight:850;font-size:1.17rem;margin:0 0 12px}.notebook-card p:last-child{font-size:.85rem;color:var(--muted);margin:0;line-height:1.9}.access-note{margin-top:65px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:25px 0;display:grid;grid-template-columns:1fr 1.65fr;gap:10px 40px;align-items:start}.access-note h2{font-size:1.5rem}.access-note>p{color:var(--muted);font-size:.84rem;line-height:1.95}.domain-label{grid-column:2;font-weight:800;font-size:.72rem;color:var(--red);letter-spacing:.04em}.site-footer{background:var(--ink);color:white}.footer-top{display:flex;justify-content:space-between;gap:35px;padding:43px 0}.footer-brand strong{font-size:1.7rem}.footer-brand p:last-child{color:#B3B8BA;font-size:.82rem;margin:7px 0 0}.footer-top nav{display:flex;align-items:flex-start;gap:30px;padding-top:22px;flex-wrap:wrap}.footer-top nav a{font-size:.85rem;font-weight:750}.footer-top nav a:hover{color:#FFD6C2}.footer-bottom{border-top:1px solid #34414D;display:flex;justify-content:space-between;color:#9CA4A9;font-size:.72rem;letter-spacing:.07em;padding:18px 0}.breadcrumbs{display:flex;gap:11px;align-items:center;margin:0 0 23px;color:var(--muted);font-size:.78rem}.breadcrumbs a{color:var(--red-dark);font-weight:750}.subpage-hero{display:grid;grid-template-columns:1.35fr .7fr;gap:40px;align-items:stretch;background:var(--warm);padding:35px 35px 35px 45px;min-height:370px}.subpage-hero>div:first-child{display:flex;flex-direction:column;justify-content:center}.subpage-hero h1{font-size:clamp(2.3rem,4.3vw,4rem);font-weight:900;color:var(--ink);margin:4px 0 20px}.subpage-hero h1 span{display:block;color:var(--red);font-size:.45em;line-height:1.5;margin-top:7px}.hero-summary{font-size:.97rem;color:#4E5356;line-height:1.95;max-width:670px}.hero-tagline{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}.hero-tagline span{padding:5px 12px;font-size:.71rem;border:1px solid #C8C0B3;font-weight:800}.subpage-hero-image{position:relative;min-height:330px;overflow:hidden;background:#DBD6CE}.subpage-hero-image img{height:100%;width:100%;position:absolute;inset:0;object-fit:cover}.editorial-callout{margin-top:32px;display:flex;align-items:start;gap:24px;border-left:4px solid var(--gold);padding:14px 22px;background:#F3EFE8}.editorial-callout>span{flex:0 0 130px;color:var(--red);font-size:.65rem;font-weight:850;letter-spacing:.13em;padding-top:5px}.editorial-callout p{font-size:.82rem;line-height:1.9;color:var(--muted);margin:0}.section-note{color:var(--muted);font-size:.78rem}.video-archive{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}.video-feature{display:grid;grid-template-columns:43% 1fr;gap:19px;border-bottom:1px solid var(--line);padding-bottom:25px;min-width:0}.video-figure{position:relative;min-height:300px;background:var(--warm)}.video-figure img{width:100%;height:100%;position:absolute;inset:0;object-fit:cover}.video-number{position:absolute;top:0;left:0;padding:9px 14px;background:var(--red);font-size:1.22rem;color:white;font-weight:900}.video-detail h3{font-size:1.22rem;font-weight:900;margin:0 0 12px}.video-detail p{font-size:.82rem;color:var(--muted);line-height:1.95}.video-detail .video-intro{font-size:.88rem;color:var(--text);font-weight:650}.cross-page{margin-top:65px;background:var(--ink);color:white;padding:38px 44px;display:flex;justify-content:space-between;align-items:center;gap:35px}.cross-page h2{font-size:1.75rem;margin:0 0 12px}.cross-page p:last-child{color:#BEC4C8;font-size:.85rem;margin:0}.cross-page>a{flex-shrink:0;border:1px solid #C78B79;padding:13px 18px;font-size:.83rem;font-weight:850}.cross-page>a:hover{color:#fff;background:var(--red)}.conversation-list{display:grid;grid-template-columns:1fr;gap:0}.conversation-article{display:grid;grid-template-columns:29% 1fr;gap:38px;border-bottom:1px solid var(--line);padding:27px 0}.conversation-article:first-child{padding-top:0}.conversation-visual{position:relative;min-height:265px;background:var(--warm)}.conversation-visual img{position:absolute;width:100%;height:100%;object-fit:cover;inset:0}.conversation-visual span{position:absolute;bottom:0;left:0;padding:6px 15px;background:var(--gold);color:white;font-size:1.2rem;font-weight:900}.conversation-copy{align-self:center}.conversation-copy h3{font-size:1.64rem;margin:0 0 15px;font-weight:900}.conversation-copy p{font-size:.91rem;line-height:2;color:var(--muted)}.conversation-copy .conversation-summary{color:var(--ink);font-weight:750}.context-grid{display:grid;grid-template-columns:.9fr 1.4fr;gap:65px}.context-grid>div:first-child{background:var(--warm);padding:30px}.context-grid>div:first-child h2{font-size:2.1rem}.context-grid>div:first-child p:last-child{font-size:.88rem;color:var(--muted);line-height:1.95}.context-steps>div{padding:16px 0 19px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:45px 1fr;column-gap:15px}.context-steps b{grid-row:span 2;color:var(--gold);font-size:1.7rem;font-weight:900;line-height:1.2}.context-steps h3{font-size:1.08rem;margin:0 0 6px}.context-steps p{font-size:.86rem;color:var(--muted);margin:0}.error-page{text-align:center;padding:100px 0 120px}.error-page h1{color:var(--ink)}.error-page>p:not(.eyebrow){color:var(--muted)}.error-page .primary-link{margin:25px auto}.error-links{display:flex;justify-content:center;gap:30px;margin-top:18px}.error-links a{border-bottom:1px solid var(--gold);font-weight:750}.site-section .feature-grid h3,.site-section .notebook-grid h3{overflow-wrap:anywhere}
@media(max-width:1150px){.lead-grid{grid-template-columns:1fr 1fr}.lead-aside{grid-column:1 / -1;padding-top:15px;max-width:700px}.lead-visual{min-height:440px}.feature-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.feature-card--wide{grid-column:span 2}.feature-grid .feature-card:last-child{grid-column:span 2}.feature-grid .feature-card:last-child .feature-image{aspect-ratio:1.8}.ranking-section{gap:25px}.video-archive{gap:25px}.video-feature{grid-template-columns:1fr}.video-figure{aspect-ratio:16/10;min-height:0}.video-detail{padding-bottom:7px}}
@media(max-width:800px){.shell{width:min(var(--width),calc(100% - 36px))}.masthead{padding:17px 0}.masthead-slogan{font-size:.74rem}.brand-link strong{font-size:1.55rem}.brand-link img{width:45px;height:45px}.nav-inner>a{margin-right:10px;padding-right:16px}.nav-inner>a[aria-current=page]::after{width:calc(100% - 16px)}.nav-caption{display:none}.page-main{padding-top:22px}.lead-grid{gap:18px}.lead-copy{padding-top:8px}.lead-copy h1{font-size:clamp(2.55rem,5vw,3.5rem)}.lead-intro{font-size:.92rem}.lead-meta{padding-top:25px}.lead-visual{min-height:360px}.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-card--wide{grid-column:span 2}.feature-grid .feature-card:last-child{grid-column:span 1}.feature-grid .feature-card:last-child .feature-image{aspect-ratio:4/4.5}.watch-strip{margin-inline:-10px;padding-inline:15px}.watch-preview{gap:14px}.preview-image{height:190px}.ranking-section{grid-template-columns:1fr}.trends-home{grid-template-columns:1fr}.topic-visual{min-height:300px}.topic-visual img{object-position:center 32%}.notebook-grid{gap:12px}.notebook-card{padding:20px 16px}.subpage-hero{padding:28px;gap:20px}.subpage-hero-image{min-height:300px}.video-feature{grid-template-columns:1fr}.context-grid{gap:20px}}
@media(max-width:600px){body{font-size:15px}.shell{width:calc(100% - 30px)}.topline-inner{font-size:.59rem}.topline-inner span:last-child{display:none}.masthead-slogan{display:none}.brand-link strong{font-size:1.65rem}.nav-inner{min-height:50px}.nav-inner>a{font-size:.86rem;margin-right:13px;padding-right:3px}.nav-inner>a[aria-current=page]::after{width:100%}.lead-grid{grid-template-columns:1fr;gap:16px}.lead-copy{padding:8px 0 5px}.lead-copy h1{margin-bottom:14px}.lead-copy h1 span{font-size:.49em}.lead-intro{margin-bottom:14px}.lead-meta{padding-top:21px}.lead-visual{min-height:0;aspect-ratio:1.2}.lead-visual>img{object-position:center 36%}.lead-aside{padding:14px 0 5px}.lead-aside h2{font-size:1.18rem}.site-section{margin-top:48px}.section-heading{align-items:start;flex-direction:column;gap:8px;margin-bottom:20px}.section-heading h2{font-size:1.68rem}.feature-grid{gap:12px}.feature-card--wide{grid-column:span 2}.feature-image{aspect-ratio:4/4.8}.feature-copy{padding-top:10px}.feature-copy h3{font-size:1.02rem}.feature-card--wide h3{font-size:1.24rem}.feature-copy>p:not(.micro){font-size:.78rem}.watch-preview{grid-template-columns:1fr;gap:24px}.preview-item{display:grid;grid-template-columns:42% 1fr;gap:13px}.preview-image{height:160px}.preview-item>div:nth-child(2){padding:0}.preview-item h3{font-size:1.05rem}.ranking-intro h2{font-size:1.7rem}.ranking-line{grid-template-columns:44px 1fr;gap:12px}.ranking-line>b{font-size:2rem}.ranking-line>span{display:none}.topic-row{grid-template-columns:36px 1fr;gap:10px}.topic-row h3{font-size:1.13rem}.notebook-grid{grid-template-columns:1fr}.notebook-card{min-height:0}.access-note{grid-template-columns:1fr}.domain-label{grid-column:1}.footer-top{flex-direction:column}.footer-top nav{padding-top:0}.footer-bottom{gap:10px;flex-wrap:wrap}.subpage-hero{display:flex;flex-direction:column;padding:22px}.subpage-hero h1{font-size:2.3rem}.subpage-hero-image{min-height:0;aspect-ratio:1.65}.editorial-callout{flex-direction:column;gap:7px}.editorial-callout>span{flex:auto}.video-archive{grid-template-columns:1fr}.video-feature{display:grid;grid-template-columns:42% 1fr;gap:15px}.video-figure{height:100%;aspect-ratio:auto;min-height:255px}.video-detail h3{font-size:1.09rem}.video-detail p{font-size:.79rem}.video-detail .video-intro{font-size:.8rem}.conversation-article{grid-template-columns:1fr;gap:14px}.conversation-visual{min-height:0;aspect-ratio:1.8}.conversation-copy h3{font-size:1.33rem}.context-grid{grid-template-columns:1fr}.cross-page{padding:28px 24px;flex-direction:column;align-items:start}.cross-page h2{font-size:1.5rem}}
@media(max-width:390px){.nav-inner>a{font-size:.8rem;margin-right:12px}.lead-actions{gap:16px}.preview-item{grid-template-columns:1fr}.preview-image{height:230px}.video-feature{grid-template-columns:1fr}.video-figure{min-height:0;aspect-ratio:1.45}.lead-meta{flex-wrap:wrap}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}
