/* 51 GUAGUA editorial visual system */
:root{color-scheme:dark;--bg:#10151D;--surface:#19212C;--raised:#222C38;--title:#F7F5F2;--text:#E0E4E8;--muted:#BBC4CC;--accent:#FF6B7D;--blue:#9CC5DB;--line:#34414F;--max:1200px}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:16px;line-height:1.75;min-width:0}h1,h2,h3,p,figure{margin-top:0}h1,h2,h3{color:var(--title);line-height:1.32;letter-spacing:.012em}h1{font-size:clamp(28px,3.2vw,38px)}h2{font-size:clamp(23px,2.4vw,27px)}h3{font-size:clamp(18px,1.7vw,21px)}p{margin-bottom:18px}a{color:var(--blue);text-decoration:none;text-underline-offset:5px}a:hover{color:var(--title);text-decoration:underline}a:active{opacity:.8}a:focus-visible,summary:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:4px;border-radius:3px}img{max-width:100%;height:auto}figure{margin:0}.container{width:min(var(--max),calc(100% - 48px));margin-inline:auto;min-width:0}.skip-link{position:absolute;z-index:999;left:12px;top:-100px;padding:10px;background:var(--title);color:var(--bg)}.skip-link:focus{top:10px}.eyebrow{display:inline-block;color:var(--blue);font-size:13px;letter-spacing:.065em;font-weight:650}.site-header{position:relative;z-index:50;background:var(--bg);border-bottom:1px solid var(--line)}.masthead{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:inline-flex;align-items:center;gap:12px;min-width:0;color:var(--title)}.brand:hover{text-decoration:none}.brand-logo{display:block;max-height:40px;width:auto;max-width:128px;object-fit:contain}.brand-monogram{display:grid;place-items:center;width:40px;height:40px;background:var(--accent);color:#10151D;font-size:19px;font-weight:900;border-radius:9px}.brand-name{font-weight:800;line-height:1.08;font-size:23px;white-space:nowrap}.brand-name small{display:block;font-size:9px;letter-spacing:.17em;color:var(--muted);margin-top:7px}.header-actions{display:flex;align-items:center;gap:18px;margin-left:auto}.guide-link{color:var(--text);white-space:nowrap;font-size:14px}.menu-details{position:static}.menu-toggle{min-height:44px;display:flex;align-items:center;justify-content:center;padding:7px 16px;border:1px solid var(--line);border-radius:9px;cursor:pointer;list-style:none;color:var(--title);font-weight:650;background:var(--surface);gap:9px;user-select:none}.menu-toggle::-webkit-details-marker{display:none}.menu-lines{font-size:19px;color:var(--accent)}.menu-details[open] .menu-toggle{border-color:var(--accent)}.menu-panel{position:absolute;left:0;right:0;top:72px;background:#19212CF7;border-bottom:1px solid var(--line);box-shadow:0 14px 38px #0007;max-height:min(78vh,760px);overflow:auto;padding:28px max(24px,calc((100vw - 1200px)/2));z-index:100}.menu-heading{display:flex;gap:12px;align-items:baseline;margin-bottom:20px}.menu-heading strong{font-size:22px;color:var(--title)}.menu-heading span{font-size:14px;color:var(--muted)}.menu-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:28px}.menu-grid h2{font-size:16px;border-bottom:1px solid var(--line);padding-bottom:9px}.menu-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 9px}.menu-links a{display:block;color:var(--text);padding:8px 4px;font-size:14px;min-height:44px}.menu-links a[aria-current]{color:var(--accent)}.menu-index{display:inline-block;margin-top:15px}.desktop-nav{border-top:1px solid var(--line)}.nav-inner{height:48px;display:flex;align-items:stretch;gap:clamp(12px,2vw,31px);overflow-x:auto;scrollbar-width:none}.nav-inner::-webkit-scrollbar{display:none}.nav-inner a{display:inline-flex;align-items:center;white-space:nowrap;border-bottom:2px solid transparent;font-size:14px;font-weight:600;color:var(--muted)}.nav-inner a:hover,.nav-inner a[aria-current]{color:var(--title);text-decoration:none;border-bottom-color:var(--accent)}.mobile-bottom{display:none}
.home-section{margin-top:70px}.hero{padding-top:30px}.hero-kicker{display:flex;align-items:center;gap:18px;font-size:11px;letter-spacing:.12em;color:var(--muted);margin-bottom:16px}.hero-kicker .rule{height:1px;background:var(--line);flex:1}.visual-frame{display:flex;align-items:center;justify-content:center;aspect-ratio:16/9;min-width:0;overflow:hidden;border-radius:12px;background:var(--surface);border:1px solid var(--line)}.visual-frame img{width:100%;height:100%;object-fit:contain;object-position:center}.placeholder-art{position:relative;isolation:isolate;background:radial-gradient(circle at 75% 22%,#34414F 0,transparent 40%),linear-gradient(130deg,#243342,#19212C 66%)}.placeholder-art::before{content:"";position:absolute;width:22%;aspect-ratio:1;border:1px solid #9CC5DB66;border-radius:50%;right:11%;top:13%}.placeholder-art::after{content:"";position:absolute;width:39%;height:1px;bottom:30%;left:9%;background:#9CC5DB66;transform:rotate(-16deg)}.placeholder-pattern{position:absolute;inset:12%;border-top:1px solid #9CC5DB28;border-left:1px solid #9CC5DB28;pointer-events:none}.placeholder-art figcaption{position:relative;font-weight:750;font-size:clamp(19px,2.8vw,34px);letter-spacing:.1em;color:var(--title);text-align:center;padding:22px}.hero-visual{aspect-ratio:auto;height:min(26vw,320px);min-height:190px}.hero-visual img{width:100%;height:100%}.hero h1{margin:25px 0 13px}.hero>p{max-width:860px;color:var(--text);line-height:1.85}.hero-links,.link-row{display:flex;gap:12px;flex-wrap:wrap}.cta{min-height:44px;display:inline-flex;align-items:center;padding:9px 22px;border-radius:8px;font-weight:700}.cta.primary{color:#10151D;background:var(--accent)}.cta.secondary{color:var(--title);border:1px solid var(--line)}.section-heading{margin-bottom:24px}.section-heading h2{margin:7px 0 9px}.section-heading p{color:var(--muted);margin:0}.lead-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:18px}.lead-card{border:1px solid var(--line);border-radius:12px;background:var(--surface);padding:22px;min-width:0}.lead-feature{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:22px;align-items:center}.lead-feature .visual-frame{aspect-ratio:4/3}.lead-card h3{margin:10px 0}.lead-card p{color:var(--muted)}.lead-side{display:grid;gap:18px}.lead-side .lead-card{display:flex;flex-direction:column}.lead-side .lead-card a{margin-top:auto}.explore-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.explore-grid article{min-width:0;background:var(--surface);border:1px solid var(--line);padding:24px;border-radius:12px}.explore-symbol{color:var(--accent);font-weight:800;font-size:13px}.explore-grid h3{margin:15px 0 7px}.explore-grid p{color:var(--muted);font-size:15px}.explore-grid a,.film-card a,.view-grid a,.pair-card a{font-size:14px;font-weight:650}.pair-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.pair-card{background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;min-width:0}.pair-card .visual-frame{border:0;border-radius:0;aspect-ratio:16/7}.pair-body{padding:24px}.pair-body h3{margin-bottom:12px}.pair-body p{color:var(--muted)}.pair-body li{margin-bottom:5px}.pair-body ul{padding-left:20px;margin:12px 0 19px}.film-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.film-card{min-width:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--surface);display:flex;flex-direction:column}.film-card .visual-frame{border:0;border-radius:0;aspect-ratio:5/4}.film-card>div{padding:20px;display:flex;flex-direction:column;flex:1}.film-card h3{margin-bottom:8px}.film-card p{font-size:14px;color:var(--muted)}.film-card a{margin-top:auto}.view-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:19px}.view-grid article{padding:22px 24px;border-top:2px solid var(--line);background:var(--surface);min-width:0}.view-grid h3{margin:12px 0}.view-grid p{color:var(--muted)}.trust{display:grid;grid-template-columns:1.5fr .8fr;gap:50px;padding:32px;background:var(--raised);border-radius:12px;margin-bottom:72px}.trust-copy h2{margin-top:10px}.trust-links{display:flex;flex-direction:column}.trust-links a{padding:11px 0;display:flex;justify-content:space-between;border-bottom:1px solid var(--line);color:var(--text)}.trust-links a:hover{color:var(--accent)}
.subpage{padding-top:27px;padding-bottom:80px}.breadcrumbs{display:flex;gap:11px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:30px}.page-intro{max-width:920px;margin-bottom:26px}.page-intro h1{margin:11px 0 14px}.page-intro p{font-size:17px;color:var(--text)}.page-visual{margin:26px 0 42px}.page-visual .visual-frame{aspect-ratio:16/5;max-height:240px}.page-visual .placeholder-art figcaption{font-size:26px}.essay-columns{columns:2;column-gap:55px}.essay-columns section{break-inside:avoid;margin:0 0 34px;max-width:100%}.essay-columns p,.editorial p,.process p,.topic-panel p,.method p,.reading-list p,.status-list p{color:var(--text);line-height:1.83}.essay-columns h2{padding-top:6px;margin-bottom:13px}.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.topic-panel{padding:24px;border:1px solid var(--line);border-radius:12px;background:var(--surface);min-width:0}.topic-panel h2{margin:12px 0}.editorial{max-width:860px;margin:40px auto}.editorial section{margin-bottom:32px}.process{list-style:none;padding:0;margin:0;max-width:980px}.process li{display:grid;grid-template-columns:74px 1fr;gap:18px;padding:23px 0;border-bottom:1px solid var(--line)}.step-no{font-weight:800;color:var(--accent);font-size:24px}.process h2{margin-bottom:10px}.source-labels{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 30px}.source-labels span{border:1px solid var(--line);padding:8px 12px;border-radius:6px;font-size:13px;color:var(--blue)}.method-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.method{padding:24px;background:var(--surface);border-left:3px solid var(--line);border-radius:6px}.method h2{margin:12px 0}.feature-pair{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center;margin-bottom:36px}.feature-pair .visual-frame{aspect-ratio:4/3}.feature-pair .prose h2{margin:0 0 12px}.feature-pair .prose p{margin-bottom:24px}.reading-list{display:grid;gap:15px}.reading-list article{border-left:3px solid var(--accent);background:var(--surface);padding:22px 26px}.reading-list h2{margin:10px 0}.status-list{max-width:980px}.status-list article{display:flex;gap:20px;border-bottom:1px solid var(--line);padding:24px 0}.status-dot{display:block;flex:0 0 12px;height:12px;border:2px solid var(--accent);border-radius:50%;margin-top:10px}.essay{max-width:900px}.closing-essay{border-top:1px solid var(--line);margin-top:44px;padding-top:27px;max-width:920px}.closing-essay h2{margin-bottom:12px}.next-read{margin-top:42px;padding:24px;border:1px solid var(--line);background:var(--surface);border-radius:12px}.next-read h2{font-size:21px}.link-row a{display:inline-flex;align-items:center;min-height:44px;padding:8px 15px;border:1px solid var(--line);border-radius:8px}.faq-list{max-width:950px;display:grid;gap:12px}.faq-list details{border:1px solid var(--line);border-radius:9px;background:var(--surface);padding:0 22px}.faq-list summary{cursor:pointer;min-height:60px;display:flex;align-items:center;font-size:17px;font-weight:700;color:var(--title);list-style:none;padding-right:30px;position:relative}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:'+';position:absolute;right:0;font-size:24px;color:var(--accent)}.faq-list details[open] summary:after{content:'−'}.faq-list details p{border-top:1px solid var(--line);padding:17px 0 18px;margin:0}
.site-footer{border-top:1px solid var(--line);background:#151C25;padding-top:46px}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:35px;padding-bottom:35px}.footer-brand{font-size:22px;color:var(--title);font-weight:800}.footer-brand span{font-size:10px;color:var(--muted);letter-spacing:.1em;display:block}.footer-grid p{max-width:300px;color:var(--muted);font-size:14px;margin-top:12px}.footer-grid h2{font-size:15px;margin-bottom:12px}.footer-grid div>a:not(.footer-brand){display:block;color:var(--muted);font-size:13px;padding:4px 0}.footer-grid div>a:hover{color:var(--title)}.footer-bottom{border-top:1px solid var(--line);padding:16px 0;color:var(--muted);font-size:12px;display:flex;justify-content:space-between;gap:12px}
@media(max-width:1024px){.film-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lead-feature{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.menu-grid{grid-template-columns:1fr 1fr}.menu-grid section:first-child{grid-column:1/-1}}
@media(max-width:767px){.container{width:calc(100% - 32px)}.masthead{height:60px}.desktop-nav{display:none}.guide-link{font-size:13px}.header-actions{gap:9px}.menu-toggle{padding:7px 11px}.menu-panel{top:60px;max-height:calc(100dvh - 125px);padding:20px 16px 32px;overflow:auto}.menu-grid{display:block}.menu-grid section:first-child{grid-column:auto}.menu-grid section{margin-bottom:25px}.menu-links{grid-template-columns:repeat(2,minmax(0,1fr))}.menu-heading{display:block}.menu-heading span{display:block}.brand-name{font-size:20px}.brand-name small{font-size:8px}.brand-logo{max-width:75px;max-height:34px}.brand-monogram{width:34px;height:34px;font-size:17px}.mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(4,1fr);bottom:0;left:0;right:0;height:calc(62px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#19212CF5;border-top:1px solid var(--line);z-index:45}.mobile-bottom a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;font-size:11px;color:var(--muted);text-decoration:none}.mobile-bottom span{font-size:21px;line-height:1.3}.mobile-bottom a[aria-current]{color:var(--accent);font-weight:800}.site-footer{padding-bottom:calc(70px + env(safe-area-inset-bottom))}.home-section{margin-top:43px}.hero{padding-top:20px}.hero-visual{height:min(52vw,220px);min-height:156px}.hero h1{margin:20px 0 12px}.hero>p{font-size:15px}.lead-grid,.pair-grid,.view-grid,.feature-pair,.trust{grid-template-columns:1fr}.lead-feature{grid-template-columns:1fr}.explore-grid,.topic-grid,.method-list{grid-template-columns:1fr}.film-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.pair-body{padding:20px}.pair-card .visual-frame{aspect-ratio:16/9}.view-grid{gap:12px}.trust{gap:17px;padding:22px;margin-bottom:45px}.subpage{padding-top:18px;padding-bottom:50px}.breadcrumbs{margin-bottom:23px}.page-intro p{font-size:16px}.page-visual .visual-frame{aspect-ratio:16/7;max-height:none}.essay-columns{columns:1}.essay-columns section{margin-bottom:26px}.process li{grid-template-columns:43px 1fr;gap:11px}.step-no{font-size:19px}.footer-grid{gap:18px}.footer-bottom{flex-wrap:wrap}.faq-list details{padding:0 16px}.faq-list summary{font-size:15px}.method{padding:20px}}
@media(max-width:390px){.guide-link{display:none}.film-grid{grid-template-columns:1fr}.hero-kicker{gap:8px;font-size:10px}.section-heading p{font-size:14px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid>div:first-child{grid-column:1/-1}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}