:root{--blue:#E63946;--bright:#FF4D4F;--deep:#C41E3A;--ink:#FFFFFF;--body:#F0E8E8;--muted:#C4B0B0;--aux:#A88A8A;--pale:#1A1212;--softer:#241818;--white:#0F0A0A;--line:rgba(230,57,70,.18);--shadow:0 12px 36px rgba(0,0,0,.08);--max:1220px}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%;width:100%}body{margin:0;background:#0F0A0A;color:var(--body);font:16px/1.7 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;overflow-x:clip}img{max-width:100%;height:auto}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}h1,h2,h3,p{margin:0}h1,h2,h3{color:var(--ink);line-height:1.35;letter-spacing:-.02em}p{overflow-wrap:anywhere}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--bright);outline-offset:3px;border-radius:4px}a,button{transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease}a:hover{color:var(--bright)}.site-container{width:min(var(--max),calc(100% - 32px));margin-left:auto;margin-right:auto;min-width:0}.main-content{padding-top:26px;padding-bottom:68px;margin-top:134px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
/* Fixed full-viewport top pair; inner logo row independently padded. */
.site-header{position:fixed;z-index:40;top:0;left:0;right:0;width:100%;background:#1A1212;border-bottom:1px solid var(--line)}
.red-line{height:22px;width:100%;background:var(--deep);color:#fff;font-size:12px;line-height:22px;overflow:visible}.top-inner{height:22px;width:min(var(--max),calc(100% - 32px));margin:auto;display:flex;justify-content:space-between;align-items:center;position:relative}.top-inner>span{font-weight:700;letter-spacing:.08em;line-height:22px;white-space:nowrap}.dot-separator{font-weight:400;opacity:.75;padding:0 5px}.search-trigger{border:0;background:transparent;color:#fff;min-width:44px;min-height:44px;height:44px;display:flex;align-items:center;justify-content:center;position:relative;z-index:2;top:4px;margin-right:-12px}.search-trigger:hover{background:rgba(255,255,255,.11)}.magnifier{width:12px;height:12px;border:2px solid currentColor;border-radius:50%;position:relative;display:block}.magnifier::after{content:"";position:absolute;right:-5px;bottom:-4px;height:2px;width:7px;background:currentColor;transform:rotate(48deg);border-radius:2px}
.masthead{height:68px;width:100%;background:#1A1212}.mast-inner{width:min(var(--max),calc(100% - 32px));height:100%;margin:auto;display:grid;grid-template-columns:minmax(0,1fr) 144px minmax(0,1fr);align-items:center;gap:16px}.brand{justify-self:start;display:flex;min-width:0;align-items:center;min-height:44px}.brand img{display:block;width:auto;height:auto;max-height:36px;max-width:190px;object-fit:contain;object-position:left center}.brand-fallback{font-size:25px;font-weight:900;letter-spacing:.02em;color:var(--deep)}.catalog-trigger{justify-self:center;display:flex;align-items:center;gap:11px;height:44px;min-width:104px;justify-content:center;border:1px solid var(--line);border-radius:11px;background:var(--pale);color:var(--deep);font-size:14px;font-weight:750}.catalog-trigger:hover,.catalog-trigger[aria-expanded="true"]{background:var(--softer);border-color:rgba(230,57,70,.44)}.catalog-symbol{display:grid;gap:4px;width:18px}.catalog-symbol i{display:block;height:2px;width:18px;background:var(--blue);border-radius:2px}.catalog-symbol i:nth-child(2){width:12px}.header-app{justify-self:end;height:44px;min-width:115px;padding:0 16px;display:flex;align-items:center;justify-content:center;gap:10px;background:linear-gradient(135deg,#FF4D4F 0%,#E63946 50%,#C41E3A 100%);color:#fff;border-radius:10px;font-size:14px;font-weight:700;white-space:nowrap}.header-app:hover{color:#fff;box-shadow:0 5px 18px rgba(230,57,70,.23);transform:translateY(-1px)}
.quick-tabs{height:44px;background:var(--pale);border-top:1px solid var(--line)}.quick-tabs-inner{width:min(var(--max),calc(100% - 32px));margin:auto;height:100%;display:flex;align-items:center;justify-content:flex-start;gap:8px}.tab-link{display:flex;align-items:center;justify-content:center;min-height:44px;font-size:14px;line-height:1.3;font-weight:650;color:var(--muted);padding:0 18px;border-radius:5px}.tab-link:hover{color:var(--blue);background:#1A1212}.tab-link.is-current{background:var(--blue);color:#fff}.tab-link.is-current:hover{color:#fff}
/* media never cropped */
.media-slot{display:flex;align-items:center;justify-content:center;background:#1A1212;min-width:0;overflow:hidden;border:1px solid rgba(230,57,70,.09);border-radius:14px}.media-slot img{display:block;width:100%;height:100%;max-width:100%;object-fit:contain;object-position:center}.image-missing{width:100%;height:100%;min-height:140px;display:grid;place-items:center;color:var(--deep);font-weight:800;letter-spacing:.09em}.banner-image{height:300px;width:100%;background:linear-gradient(120deg,#1A1212,#2C191B);border-radius:13px}.banner-image img{max-height:300px}.content-image{height:252px}.feature-img{height:198px;border-radius:12px 12px 0 0;border-left:0;border-right:0;border-top:0}.split-visual{height:300px}.wide-visual{height:220px;margin-bottom:20px}.shelf-img{height:294px}.chart-image{height:340px}.slate-art{height:300px}.craft-art{height:296px}.phone-media{height:420px;border-radius:16px}.phone-media img{max-height:420px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;text-transform:uppercase;font-size:11px;line-height:1.3;font-weight:850;letter-spacing:.13em;color:var(--blue)}.eyebrow b{font-weight:400;color:var(--aux)}.home-page{display:flex;flex-direction:column;gap:0}.landing-cover{padding:0 0 32px}.landing-copy{padding:28px 4px 0;display:flex;align-items:flex-end;justify-content:space-between;gap:36px}.landing-copy>div:first-child{max-width:760px}.landing-copy h1{font-size:clamp(28px,3vw,32px);font-weight:870;line-height:1.28;margin:12px 0}.home-brand-name{display:block;font-size:13px;font-weight:780;color:var(--deep);letter-spacing:.1em;margin-bottom:7px}.landing-copy p{font-size:16px;line-height:1.78;max-width:740px;color:var(--muted)}.landing-actions{display:flex;gap:9px;flex-shrink:0;margin-bottom:1px}.btn{height:44px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:12px;padding:0 17px;border-radius:10px;border:1px solid var(--blue);white-space:nowrap;font-size:14px;font-weight:750;line-height:1.25}.btn-primary{background:linear-gradient(135deg,#FF4D4F 0%,#E63946 50%,#C41E3A 100%);border-color:var(--blue);color:#fff}.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(230,57,70,.2)}.btn-secondary{background:#1A1212;border-color:rgba(230,57,70,.28);color:var(--blue)}.btn-secondary:hover{background:var(--pale);color:var(--deep)}.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;line-height:1.4;min-height:44px;font-weight:750;color:var(--blue);white-space:nowrap}.text-link:hover{color:var(--deep);text-decoration:underline;text-underline-offset:4px}
.home-section{padding:33px 0 35px;border-top:1px solid var(--line);min-width:0}.section-top{display:flex;align-items:end;justify-content:space-between;gap:30px;margin:0 0 23px}.section-top h2,.home-section>h2{font-size:24px;line-height:1.35;margin:9px 0 0;letter-spacing:-.025em}.section-top>p{font-size:14px;color:var(--muted);max-width:430px;line-height:1.6}.section-footnote{margin-top:13px;font-size:13px;color:var(--muted)}
.topic-pills{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.topic-pills>a{position:relative;display:block;min-height:128px;padding:20px 48px 18px 21px;background:#1A1212;border:1px solid var(--line);border-radius:13px;box-shadow:0 6px 17px rgba(0,0,0,.025)}.topic-pills>a:hover{background:var(--pale);border-color:rgba(230,57,70,.38);transform:translateY(-2px)}.topic-pills strong{display:block;font-size:16px;line-height:1.4;margin:8px 0 6px;color:var(--ink)}.topic-pills p{font-size:14px;color:var(--muted);line-height:1.55}.topic-index{display:block;width:20px;height:4px;background:var(--bright);border-radius:4px}.topic-pills>a:nth-child(even) .topic-index{background:var(--deep)}.topic-arrow{position:absolute;right:18px;top:20px;color:var(--blue);font-size:17px}
.today-flex{display:grid;grid-template-columns:42% minmax(0,1fr);gap:24px;align-items:start}.today-visual{min-width:0}.today-copy>p{font-size:15px;line-height:1.8;color:var(--muted);margin-bottom:17px}.numbered-list{border-top:1px solid var(--line)}.numbered-list a{display:grid;grid-template-columns:46px 105px 1fr 22px;gap:10px;align-items:center;min-height:56px;padding:9px 8px;border-bottom:1px solid var(--line);line-height:1.4}.numbered-list a:hover{background:var(--pale)}.numbered-list b,.numbered-list i{color:var(--blue);font-style:normal}.numbered-list b{font-size:22px;letter-spacing:-.06em}.numbered-list span{font-weight:750;color:var(--ink)}.numbered-list em{font-style:normal;font-size:14px;color:var(--muted)}
.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.feature-panel{border:1px solid var(--line);border-radius:13px;overflow:hidden;background:#1A1212;min-width:0;box-shadow:0 6px 16px rgba(0,0,0,.035)}.feature-text{padding:20px 21px 19px}.category-code{font-size:11px;font-weight:800;color:var(--bright);letter-spacing:.12em}.feature-text h3{font-size:21px;margin:9px 0 10px}.feature-text p{font-size:15px;line-height:1.75;color:var(--muted);margin-bottom:11px}.feature-text .text-link{font-size:14px}
.split-panel{display:grid;grid-template-columns:48% minmax(0,1fr);gap:22px;align-items:stretch}.series-points{border-top:1px solid var(--line)}.series-points a{display:grid;grid-template-columns:44px 1fr 22px;gap:11px;align-items:center;min-height:72px;border-bottom:1px solid var(--line);padding:12px 8px}.series-points a:hover{background:var(--pale)}.series-points>a>span{font-size:23px;line-height:1;color:var(--blue);font-weight:850}.series-points strong{display:block;font-size:16px;color:var(--ink)}.series-points p{font-size:14px;color:var(--muted);line-height:1.55;margin-top:3px}.series-points b{font-size:18px;color:var(--blue)}
.motif-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:11px}.motif-grid a{border:1px solid var(--line);border-radius:11px;display:grid;grid-template-columns:38px 1fr;column-gap:12px;padding:16px 18px;background:#1A1212;align-items:center;min-height:74px}.motif-grid a:hover{background:var(--pale);transform:translateY(-1px)}.motif-grid b{grid-row:span 2;font-size:21px;color:var(--blue);font-weight:850}.motif-grid strong{font-size:16px;color:var(--ink)}.motif-grid span{font-size:13px;color:var(--muted)}
.shelf-layout{display:grid;grid-template-columns:35% minmax(0,1fr);gap:22px}.shelf-rows{border-top:1px solid var(--line)}.shelf-rows a{display:grid;grid-template-columns:46px 110px 1fr 22px;align-items:center;gap:9px;padding:9px 11px;min-height:57px;border-bottom:1px solid var(--line)}.shelf-rows a:hover{background:var(--pale)}.shelf-rows span{color:var(--blue);font-weight:850}.shelf-rows strong{font-size:16px;color:var(--ink)}.shelf-rows em{font-size:14px;font-style:normal;color:var(--muted)}.shelf-rows b{color:var(--blue)}
.chart-layout{display:grid;grid-template-columns:minmax(0,1fr) 36%;gap:24px;align-items:start}.chart-list{border-top:1px solid var(--line)}.chart-list a{display:grid;grid-template-columns:65px 1fr 25px;align-items:center;gap:12px;padding:8px 10px;border-bottom:1px solid var(--line);min-height:64px}.chart-list a:hover{background:var(--pale)}.chart-list a>span{font-size:32px;letter-spacing:-.09em;color:var(--blue);line-height:1;font-weight:900}.chart-list strong{display:block;font-size:16px;color:var(--ink)}.chart-list small{display:block;font-size:13px;color:var(--muted);margin-top:2px}.chart-list b{color:var(--blue)}
.slate-layout{display:grid;grid-template-columns:39% minmax(0,1fr);gap:26px;align-items:start}.slate-stages{border-left:2px solid rgba(230,57,70,.18);margin:4px 0 0 8px}.slate-node{position:relative;padding:0 0 24px 27px}.slate-node:last-child{padding-bottom:0}.slate-dot{position:absolute;width:13px;height:13px;border:3px solid #fff;box-shadow:0 0 0 2px var(--blue);border-radius:50%;background:var(--bright);top:3px;left:-8px}.slate-node b{display:inline-flex;font-size:12px;color:#fff;background:var(--blue);border-radius:6px;padding:2px 9px}.slate-node h3{font-size:17px;margin:9px 0 6px}.slate-node p{color:var(--muted);font-size:15px;line-height:1.65}
.craft-layout{display:grid;grid-template-columns:42% minmax(0,1fr);gap:20px;align-items:start}.craft-steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.craft-steps a{padding:17px;border:1px solid var(--line);border-radius:11px;min-height:138px;display:flex;flex-direction:column}.craft-steps a:hover{background:var(--pale)}.craft-steps span{font-size:13px;font-weight:850;color:var(--blue)}.craft-steps strong{font-size:16px;margin:7px 0 5px;color:var(--ink)}.craft-steps p{font-size:14px;color:var(--muted);line-height:1.55}
.beyond-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.beyond-grid a{display:flex;flex-direction:column;padding:22px;border:1px solid var(--line);border-radius:13px;background:linear-gradient(155deg,#fff 30%,#1A1212);min-height:208px}.beyond-grid a:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.beyond-grid small{font-size:11px;color:var(--blue);font-weight:850;letter-spacing:.1em}.beyond-grid strong{font-size:20px;color:var(--ink);margin:11px 0}.beyond-grid p{font-size:15px;color:var(--muted);line-height:1.6}.beyond-grid span{color:var(--blue);font-size:14px;font-weight:750;margin-top:auto;padding-top:12px}
.app-layout{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(260px,.7fr);align-items:center;gap:25px;border:1px solid var(--line);border-radius:15px;background:linear-gradient(125deg,#1A1212 0%,#fff 65%);padding:26px}.app-brand-line{display:flex;align-items:center;gap:14px;margin-bottom:18px}.app-brand-line img{object-fit:contain;max-width:56px}.app-brand-line strong{display:block;color:var(--ink);font-size:18px}.app-brand-line span{font-size:11px;color:var(--blue);letter-spacing:.1em;font-weight:800}.app-copy>p{font-size:15px;line-height:1.8;color:var(--body)}.app-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.app-layout .phone-media{height:380px;background:transparent}.app-layout .phone-media img{max-height:378px}
.policy-home,.about-home{max-width:960px}.policy-home h2,.about-home h2{font-size:24px;margin:10px 0 14px}.policy-home p,.about-home p,.faq-home-intro{font-size:16px;color:var(--muted);line-height:1.85}.policy-eyebrow{color:var(--blue);letter-spacing:.12em;font-size:11px;font-weight:850}.compact-links{display:flex;gap:20px;margin-top:14px}.compact-links a{color:var(--blue);font-weight:750;font-size:14px;min-height:44px;display:inline-flex;align-items:center}.faq-quick{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:20px}.faq-quick a{display:flex;flex-direction:column;gap:9px;padding:18px 20px;border-radius:11px;border:1px solid var(--line);min-height:109px}.faq-quick a:hover{background:var(--pale)}.faq-quick strong{font-size:15px;color:var(--ink)}.faq-quick span{font-size:14px;color:var(--muted)}.about-home>.text-link{margin-top:15px}
/* Inner-page typography and visibly different editorial formats */
.article-page{max-width:1090px;margin:0 auto}.article-intro{padding:18px 0 25px}.breadcrumb{display:flex;align-items:center;gap:9px;color:var(--aux);font-size:13px;margin-bottom:17px}.breadcrumb a{display:inline-flex;align-items:center;min-height:44px;color:var(--blue);font-weight:700}.article-intro h1{font-size:clamp(28px,3vw,32px);line-height:1.32;margin:12px 0 15px;max-width:990px}.article-title-divider{color:#9C7478;font-weight:400}.article-lead{max-width:870px;font-size:16px;line-height:1.85;color:var(--muted)}.article-micro{display:flex;gap:10px;flex-wrap:wrap;margin-top:17px}.article-micro span{background:var(--pale);border:1px solid var(--line);border-radius:6px;padding:4px 9px;font-size:12px;color:var(--blue);font-weight:700}.hero-article{height:270px;margin-bottom:27px}.hero-article img{max-height:270px}.hero-app{height:340px}.hero-app img{max-height:338px}
.article-chapters,.numbered-article,.library-article,.longread-body,.timeline-article{display:grid;gap:0}.content-chapter{display:grid;grid-template-columns:70px 1fr;gap:20px;padding:22px 12px;border-bottom:1px solid var(--line);min-width:0}.chapter-mark{display:flex;flex-direction:column;gap:7px;align-items:start}.chapter-num{font-size:26px;letter-spacing:-.07em;font-weight:860;line-height:1.15;color:var(--blue)}.chapter-copy h2{font-size:20px;margin:1px 0 11px}.chapter-copy p{font-size:16px;line-height:1.82;color:var(--body);margin:0 0 9px}.chapter-copy p:last-child{color:var(--muted);margin-bottom:0}.article-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.article-cards .content-chapter{grid-template-columns:1fr;gap:8px;padding:24px;background:#1A1212;border:1px solid var(--line);border-radius:13px}.article-cards .chapter-num{font-size:20px}.article-cards .chapter-copy h2{font-size:18px;margin:2px 0 8px}.article-cards .chapter-copy p{font-size:15px}.article-ranking .chapter-num{font-size:38px}.article-ranking .content-chapter:nth-child(odd){background:var(--pale)}.article-timeline .timeline-article{border-left:2px solid rgba(230,57,70,.23);margin-left:15px}.timeline-article .content-chapter{position:relative;grid-template-columns:85px minmax(0,1fr);padding-left:30px}.timeline-article .content-chapter::before{content:"";position:absolute;top:34px;left:-8px;width:14px;height:14px;border-radius:50%;border:3px solid #fff;background:var(--blue);box-shadow:0 0 0 1px var(--blue)}.chapter-status{font-size:12px;padding:3px 8px;border-radius:5px;background:var(--blue);color:#fff}.article-library .content-chapter{background:#1A1212;border-bottom:1px solid var(--line);grid-template-columns:96px 1fr}.article-library .content-chapter:nth-child(odd){background:var(--pale)}.article-steps .content-chapter{border-left:3px solid var(--bright);margin-bottom:9px;background:var(--pale);padding-left:20px;border-bottom:0}.article-policy .longread-body .content-chapter{grid-template-columns:1fr;max-width:920px;gap:7px;padding:21px 0}.article-policy .longread-body .chapter-mark{display:none}.article-essay .longread-body .content-chapter{grid-template-columns:65px 1fr}.article-essay .chapter-copy h2{color:var(--deep)}
.article-closing{margin:32px 0;padding:25px;background:var(--pale);border-left:4px solid var(--blue);border-radius:0 11px 11px 0}.article-closing h2{font-size:20px;margin:9px 0 12px}.article-closing p{font-size:15px;line-height:1.8;color:var(--muted);margin-top:9px}.more-links{border-top:1px solid var(--line);padding:25px 0 5px}.more-links h2{font-size:20px;margin-bottom:12px}.more-links-items{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:11px}.more-links-items a{border:1px solid var(--line);border-radius:10px;display:flex;flex-direction:column;padding:17px;gap:7px;min-height:93px}.more-links-items a:hover{background:var(--pale)}.more-links-items a span:first-child{font-size:16px;color:var(--ink);font-weight:800}.more-links-items a span:last-child{font-size:13px;color:var(--blue)}
.faq-grid{display:grid;gap:0}.faq-item{display:grid;grid-template-columns:55px 1fr;gap:16px;border-bottom:1px solid var(--line);padding:21px 12px}.faq-no{font-weight:850;font-size:23px;color:var(--blue)}.faq-item h2{font-size:19px;margin-bottom:9px}.faq-item p{font-size:16px;line-height:1.85;color:var(--body)}
/* Footer with sufficient contrast and links usable by touch. */
.site-footer{background:#080505;color:#E2D2D2;padding:43px 0 24px}.footer-content{min-width:0}.footer-identity{display:flex;gap:18px;align-items:center;border-bottom:1px solid rgba(230,57,70,.23);padding-bottom:23px;margin-bottom:23px}.footer-logo{display:flex;align-items:center;min-height:44px}.footer-logo img{display:block;max-height:36px;max-width:154px;object-fit:contain;filter:none}.footer-logo .brand-fallback{color:#fff}.footer-identity strong{font-size:21px;line-height:1;color:#fff}.footer-identity p{font-size:12px;letter-spacing:.07em;margin-top:7px;color:#D9C5C5}.tiny-divider{color:#718096;padding:0 7px}.footer-groups{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:25px}.footer-groups section{display:flex;flex-direction:column;align-items:flex-start;min-width:0}.footer-groups h3{font-size:14px;color:#fff;margin-bottom:9px}.footer-groups a{font-size:13px;line-height:1.35;color:#E2D2D2;padding:10px 0;min-height:44px;display:inline-flex;align-items:center}.footer-groups a:hover,.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}.footer-disclaimer{font-size:13px;color:#D8C5C5;line-height:1.8;padding:23px 0 18px;border-bottom:1px solid rgba(255,255,255,.14)}.footer-bottom{display:flex;align-items:center;gap:21px;min-height:45px;font-size:12px;color:#C4B0B0}.footer-bottom span{margin-right:auto}.footer-bottom a{display:flex;align-items:center;min-height:44px;color:#E2D2D2}
/* Total catalog overlay drops below masthead, never side-draws. */
.screen-veil{position:fixed;inset:90px 0 0;z-index:70;background:rgba(0,0,0,.75);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.screen-veil.is-visible{opacity:1;visibility:visible;pointer-events:auto}
.catalog-layer{position:fixed;z-index:80;top:90px;left:0;right:0;width:100%;max-height:calc(100dvh - 90px);overflow:auto;overscroll-behavior:contain;background:#1A1212;border-bottom:3px solid var(--blue);box-shadow:0 20px 38px rgba(0,0,0,.22);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-25px);transition:opacity .2s,transform .2s,visibility .2s}.catalog-layer.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}.catalog-inner{width:min(var(--max),calc(100% - 32px));margin:auto;padding:20px 0 26px}.catalog-top{display:flex;align-items:center;gap:14px;padding-bottom:17px;margin-bottom:19px;border-bottom:1px solid var(--line)}.catalog-brand{display:flex;align-items:center;min-height:44px}.catalog-brand img{max-height:30px;max-width:134px;object-fit:contain}.catalog-brand .brand-fallback{font-size:22px}.catalog-top strong{font-size:19px;color:var(--ink);line-height:1.2}.catalog-top small{font-size:12px;color:var(--muted);font-weight:500;margin-left:8px}.modal-close{margin-left:auto;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);background:var(--pale);color:var(--deep);border-radius:10px;width:44px;height:44px;flex-shrink:0}.modal-close:hover{border-color:var(--bright);background:var(--softer)}.catalog-groups{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:21px}.catalog-group{min-width:0}.catalog-group h3{font-size:15px;font-weight:800;color:var(--blue);padding-bottom:8px;border-bottom:2px solid var(--blue);margin-bottom:8px}.catalog-item{display:grid;grid-template-columns:minmax(0,1fr) 18px;gap:3px 8px;padding:10px 7px;border-radius:6px;min-height:70px}.catalog-item:hover{background:var(--pale)}.catalog-item-name{color:var(--ink);font-size:15px;font-weight:800;line-height:1.3}.catalog-item-desc{grid-column:1;font-size:12px;line-height:1.52;color:var(--muted);overflow-wrap:anywhere}.catalog-arrow{grid-column:2;grid-row:1/3;color:var(--blue);font-size:18px;line-height:1.3}
.search-layer{position:fixed;z-index:81;top:90px;right:max(16px,calc((100vw - var(--max))/2));width:min(540px,calc(100% - 32px));max-height:calc(100dvh - 100px);overflow:auto;background:#1A1212;border:1px solid var(--line);border-radius:0 0 15px 15px;box-shadow:0 18px 42px rgba(0,0,0,.18);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-16px);transition:opacity .2s,visibility .2s,transform .2s}.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}.search-layer-inner{padding:23px}.search-top{display:flex;align-items:start;justify-content:space-between;gap:18px}.mini-label{font-size:11px;font-weight:850;color:var(--blue);letter-spacing:.12em}.search-top h2{font-size:22px;margin-top:6px}.search-top .modal-close{margin:0}.search-layer-inner>p{font-size:14px;color:var(--muted);margin:11px 0 15px}.search-input-row{display:grid;grid-template-columns:minmax(0,1fr) 75px;border:1px solid rgba(230,57,70,.28);border-radius:9px;overflow:hidden}.search-input-row input{min-width:0;min-height:46px;background:#1A1212;color:var(--ink);outline:none;border:0;padding:0 13px;font-size:15px}.search-input-row button{border:0;background:var(--blue);color:#fff;font-size:14px;font-weight:750}.search-input-row button:hover{background:var(--deep)}.search-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:18px}.search-options a{display:flex;justify-content:space-between;align-items:center;min-height:48px;background:var(--pale);color:var(--ink);padding:8px 13px;border-radius:8px;font-size:14px;font-weight:700}.search-options a span{color:var(--blue)}.search-options a:hover{background:var(--softer)}.search-no-result{font-size:14px;color:var(--muted)}[hidden]{display:none!important}
.bottom-navigation{display:none}
@media(max-width:1000px){.landing-copy{align-items:start;flex-direction:column;gap:20px}.topic-pills{grid-template-columns:repeat(2,minmax(0,1fr))}.today-flex{grid-template-columns:38% 1fr}.numbered-list a{grid-template-columns:40px 75px 1fr 20px}.numbered-list em{font-size:13px}.feature-text{padding:15px}.feature-text p{font-size:14px}.catalog-groups{gap:12px}.catalog-item{padding-left:2px;padding-right:2px}}
@media(max-width:767px){
 .site-header,.red-line,.masthead{left:0;right:0;width:100%;max-width:none}.quick-tabs{display:none}.main-content{margin-top:90px;padding-top:17px;padding-bottom:48px}.red-line{height:22px}.masthead{height:68px}.mast-inner{grid-template-columns:minmax(0,1fr) 70px 99px;gap:5px;width:auto;padding:0 16px}.brand{min-width:0}.brand img{max-height:32px;max-width:min(100%,165px)}.catalog-trigger{min-width:62px;height:44px;padding:0 5px;gap:5px}.catalog-symbol{width:15px;gap:3px}.catalog-symbol i{width:15px}.catalog-symbol i:nth-child(2){width:11px}.header-app{min-width:93px;padding:0 8px;font-size:12px;gap:5px}.top-inner{width:auto;padding:0 16px}.search-trigger{margin-right:-10px}.site-container{width:auto;max-width:var(--max);margin-left:16px;margin-right:16px}
 .landing-cover{padding-bottom:24px}.banner-image{height:clamp(177px,55vw,260px)}.banner-image img{max-height:100%}.landing-copy{padding-top:18px;gap:17px}.landing-copy h1{font-size:28px;margin:10px 0}.landing-copy p{font-size:15px}.desktop-break{display:none}.landing-actions{flex-wrap:wrap;width:100%}.btn{flex:1 1 auto;min-width:0;padding:0 11px;font-size:13px}.home-section{padding:26px 0 27px}.section-top{align-items:start;flex-direction:column;gap:6px;margin-bottom:16px}.section-top h2,.home-section>h2{font-size:21px;margin-top:7px}.section-top p{font-size:13px}.section-top .text-link{min-height:34px}.topic-pills{gap:9px}.topic-pills>a{min-height:124px;padding:13px 23px 13px 13px}.topic-pills strong{font-size:15px}.topic-pills p{font-size:12px;line-height:1.55}.topic-arrow{right:11px;top:13px}.today-flex,.split-panel,.shelf-layout,.chart-layout,.slate-layout,.craft-layout,.app-layout{grid-template-columns:minmax(0,1fr)}.today-flex{gap:14px}.content-image{height:200px}.today-copy>p{font-size:14px}.numbered-list a{grid-template-columns:37px 73px 1fr 18px;padding:9px 2px;gap:7px}.numbered-list b{font-size:20px}.numbered-list em{font-size:12px}.feature-grid{grid-template-columns:minmax(0,1fr);gap:12px}.feature-img{height:200px}.feature-text{padding:15px 17px 17px}.feature-text p{font-size:14px}.split-visual,.shelf-img,.slate-art,.craft-art{height:210px}.series-points a{padding:11px 0}.wide-visual{height:172px}.motif-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.motif-grid a{grid-template-columns:31px 1fr;padding:11px 12px;gap:6px;min-height:69px}.motif-grid b{font-size:18px}.motif-grid strong{font-size:14px}.motif-grid span{font-size:12px}.shelf-layout{gap:13px}.shelf-rows a{grid-template-columns:31px 83px 1fr 16px;min-height:58px;padding:9px 0;gap:7px}.shelf-rows strong{font-size:14px}.shelf-rows em{font-size:12px}.chart-layout{gap:13px}.chart-image{height:190px;order:-1}.chart-list a{grid-template-columns:52px 1fr 22px}.chart-list a>span{font-size:27px}.slate-layout{gap:20px}.slate-stages{margin-left:8px}.craft-layout{gap:15px}.craft-steps{gap:9px}.craft-steps a{padding:13px;min-height:151px}.craft-steps p{font-size:12px}.beyond-grid{grid-template-columns:1fr;gap:9px}.beyond-grid a{min-height:138px;padding:17px}.beyond-grid strong{margin:5px 0;font-size:17px}.beyond-grid p{font-size:14px}.beyond-grid span{margin-top:7px;padding-top:0}.app-layout{gap:15px;padding:17px}.app-copy>p{font-size:14px}.app-layout .phone-media{height:290px}.app-layout .phone-media img{max-height:290px}.app-links .btn{flex:1 1 128px}.policy-home p,.about-home p,.faq-home-intro{font-size:15px}.faq-quick{grid-template-columns:1fr;gap:9px}.faq-quick a{min-height:84px;padding:13px 15px}.faq-quick a span{font-size:13px}
 .article-intro{padding:4px 0 19px}.article-intro h1{font-size:28px}.article-lead{font-size:15px}.hero-article{height:195px;margin-bottom:16px}.hero-article img{max-height:195px}.hero-app{height:265px}.hero-app img{max-height:265px}.content-chapter{grid-template-columns:46px minmax(0,1fr);gap:10px;padding:20px 2px}.chapter-num{font-size:21px}.chapter-copy h2{font-size:18px;margin-bottom:8px}.chapter-copy p{font-size:15px}.article-cards{grid-template-columns:1fr;gap:11px}.article-cards .content-chapter{padding:17px}.article-cards .chapter-copy p{font-size:15px}.article-closing{padding:17px;margin:25px 0}.article-closing p{font-size:14px}.article-timeline .timeline-article{margin-left:7px}.timeline-article .content-chapter{grid-template-columns:80px minmax(0,1fr);gap:7px;padding-left:22px}.chapter-status{font-size:11px}.article-library .content-chapter{grid-template-columns:49px 1fr}.article-steps .content-chapter{padding-left:12px}.more-links-items{grid-template-columns:1fr;gap:8px}.more-links-items a{min-height:72px}.faq-item{grid-template-columns:38px 1fr;gap:11px;padding:18px 1px}.faq-no{font-size:21px}.faq-item h2{font-size:17px}.faq-item p{font-size:15px}
 .site-footer{padding:27px 0 74px}.footer-identity{padding-bottom:18px;margin-bottom:17px}.footer-logo img{max-height:30px;max-width:110px}.footer-groups{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.footer-groups a{min-height:43px;padding:7px 0}.footer-disclaimer{font-size:12px;line-height:1.9;padding:18px 0 14px}.footer-bottom{flex-wrap:wrap;gap:8px 17px}.footer-bottom span{flex-basis:100%}
 .screen-veil{top:90px}.catalog-layer{top:90px;max-height:calc(100dvh - 90px)}.catalog-inner{width:auto;margin:0 16px;padding:13px 0 22px}.catalog-top{padding-bottom:10px;margin-bottom:14px}.catalog-brand img{max-height:28px;max-width:102px}.catalog-top strong{font-size:17px}.catalog-top small{display:block;margin:4px 0 0}.catalog-groups{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 12px}.catalog-group h3{font-size:14px}.catalog-item{min-height:69px;grid-template-columns:minmax(0,1fr) 14px;padding:9px 1px;gap:3px}.catalog-item-name{font-size:13px}.catalog-item-desc{font-size:11px;line-height:1.5}.catalog-arrow{font-size:14px}
 .search-layer{inset:90px 0 0 0;width:100%;max-height:calc(100dvh - 90px);border-radius:0;background:var(--pale);border:0}.search-layer-inner{padding:19px 16px}.search-top h2{font-size:21px}.search-options a{background:#1A1212}.search-layer-inner>p{font-size:14px}
 .bottom-navigation{position:fixed;z-index:42;left:0;right:0;bottom:0;width:100%;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#1A1212;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(5,minmax(0,1fr));box-shadow:0 -4px 18px rgba(0,0,0,.07)}.bottom-link{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;min-height:50px;font-size:11px;font-weight:750;line-height:1.15;color:var(--muted);text-align:center}.bottom-link span{font-size:17px;line-height:1.15}.bottom-link.is-current{background:var(--blue);color:#fff}.bottom-link.is-current:hover{color:#fff}.bottom-link:hover{background:var(--pale)}.bottom-link.is-current:hover{background:var(--deep)}
}
@media(max-width:350px){.mast-inner{grid-template-columns:minmax(0,1fr) 63px 87px;gap:4px}.brand img{max-width:105px;max-height:28px}.brand-fallback{font-size:20px}.header-app{min-width:82px;font-size:11px;padding:0 5px}.catalog-trigger{font-size:12px;min-width:59px}.landing-copy h1{font-size:27px}.numbered-list a{grid-template-columns:33px 61px 1fr 16px}.numbered-list em{font-size:11px}.motif-grid a{padding:10px 8px}.motif-grid strong{font-size:13px}.shelf-rows a{grid-template-columns:30px 72px 1fr 14px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}

/* HONGTAO VIDEO: deep-red visual system and readable editorial contrast. */
:root{--blue:#E63946;--bright:#FF4D4F;--deep:#C41E3A;--ink:#fff;--body:#F0E8E8;--muted:#C4B0B0;--aux:#A88A8A;--pale:#1A1212;--softer:#241818;--white:#0F0A0A;--line:rgba(230,57,70,.18);--shadow:0 16px 40px rgba(0,0,0,.55)}
html{background:#0F0A0A}body{background:#0F0A0A;color:var(--body)}
.site-header{background:#0A0707;border-color:var(--line)}.red-line{background:#C41E3A}.masthead{background:#0A0707}.quick-tabs{background:#110B0B}.tab-link{color:#D9C3C3}.tab-link:hover{background:#241818;color:#fff}.tab-link.is-current{background:#E63946;color:#fff}
.brand-fallback,.catalog-brand .brand-fallback{color:#fff}.catalog-trigger{background:#241818;color:#fff;border-color:rgba(230,57,70,.28)}.catalog-trigger:hover,.catalog-trigger[aria-expanded="true"]{background:#341E21}.catalog-symbol i{background:#FF4D4F}
.header-app,.btn-primary{background:linear-gradient(135deg,#FF4D4F 0%,#C41E3A 100%);color:#fff;border-color:#C41E3A}.header-app:hover,.btn-primary:hover{color:#fff}
.btn-secondary{background:#1A1212;border-color:rgba(230,57,70,.56);color:#fff}.btn-secondary:hover{background:#241818;color:#fff}
.mast-inner,.top-inner{background:transparent}.site-container{background:transparent}
.media-slot{background:#1A1212;border-color:rgba(230,57,70,.13)}.image-missing{color:#F0E8E8}.banner-image{background:linear-gradient(130deg,#1A1212,#2B1118)}
.eyebrow,.category-code,.chapter-num,.faq-no,.more-links-items a span:last-child{color:#FF646F}.home-brand-name,.text-link,.topic-arrow,.catalog-arrow,.mini-label,.search-options a span{color:#FF6571}.text-link:hover{color:#fff}.topic-index{background:#FF4D4F}
.topic-pills>a,.feature-panel,.article-cards .content-chapter,.faq-quick a,.beyond-grid a,.more-links-items a{background:#1A1212;border-color:rgba(230,57,70,.18)}
.topic-pills>a:hover,.feature-panel:hover,.more-links-items a:hover,.faq-quick a:hover{background:#241818}
.red-signed{grid-template-columns:repeat(4,minmax(0,1fr))}.red-signed>a{border-top:2px solid #E63946}
.red-signed>a:nth-child(even){border-top-color:#A82235}
.landing-copy p,.section-top>p,.section-footnote,.today-copy>p,.feature-text p,.series-points p,.shelf-rows em,.faq-home-intro,.policy-home p,.about-home p{color:#D9CACA}
.topic-pills strong,.feature-text h3,.chapter-copy h2,.topic-pills p,.numbered-list span,.catalog-item-name,.series-points strong,.shelf-rows strong{color:#F7EDED}
.numbered-list a:hover,.series-points a:hover,.shelf-rows a:hover,.chart-list a:hover{background:#211416}
.numbered-list b,.chart-list a>span,.motif-grid b,.slate-node b{color:#FF4D4F}
.motif-grid a,.chart-list a,.shelf-rows a,.slate-node,.craft-steps a{border-color:rgba(230,57,70,.20)}
.app-layout{background:linear-gradient(125deg,#241818 0%,#1A1212 68%)}.app-brand-line strong{color:#fff}.app-brand-line span{color:#FF7C85}
.article-intro .breadcrumb a{color:#FF6470}.article-micro span{background:#241818;color:#FF929A}.article-ranking .content-chapter:nth-child(odd){background:#241818}
.article-closing{background:#1A1212;border-left-color:#E63946}.article-closing p{color:#D6BEBE}
.site-footer{background:#080505;color:#F0E8E8}.footer-identity p,.footer-groups a,.footer-disclaimer,.footer-bottom{color:#C4B0B0}.footer-logo img{filter:none}.footer-bottom{border-color:rgba(230,57,70,.18)}
.screen-veil{background:rgba(0,0,0,.80)}.catalog-layer{background:#120B0C;box-shadow:0 20px 40px rgba(0,0,0,.55);border-bottom:3px solid #C41E3A}.catalog-inner{background:transparent}.catalog-top strong,.catalog-group h3{color:#fff}.catalog-item-name{color:#F7EDED}.catalog-item-desc{color:#C4B0B0}.catalog-item:hover{background:#241818}.modal-close{background:#241818;color:#fff}.modal-close:hover{background:#3A2024}
.search-layer{background:#140C0E;box-shadow:0 18px 42px rgba(0,0,0,.55)}.search-layer-inner>p{color:#F0E8E8}.search-input-row{border-color:rgba(230,57,70,.48)}.search-input-row input{background:#261719;color:#fff}.search-input-row input::placeholder{color:#C4B0B0}.search-input-row button{background:#C41E3A;color:#fff}.search-options a{background:#251719;color:#F0E8E8}.search-options a:hover{background:#342023}
.bottom-navigation{background:#0A0707;border-top-color:rgba(230,57,70,.34)}.bottom-link{color:#F0E8E8}.bottom-link:hover{color:#fff;background:#241818}.bottom-link.is-current{color:#fff;background:#E63946}.bottom-link.is-current:hover{color:#fff;background:#C41E3A}
@media(max-width:1000px){.red-signed{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:767px){.site-header,.red-line,.masthead,.bottom-navigation{width:100%;left:0;right:0}.mast-inner{background:transparent}.search-layer{background:#0F0A0A}.search-options a{background:#241818}.site-footer{padding-bottom:74px}}
@media(max-width:350px){.brand img{max-width:105px}.red-signed>a{padding:14px 12px}}

/* Reserve a visible backdrop strip so tapping outside the catalog always closes it. */
.catalog-layer{max-height:calc(100dvh - 160px)}