:root{
  --brand:#6D28D9;--brand-soft:#A78BFA;--ink:#27242D;--muted:#716B78;--dark:#17151C;--bg:#F7F5FA;--bg2:#ECE8F2;--accent:#F59E0B;--white:#fff;--line:rgba(39,36,45,.12);--shadow:0 18px 45px rgba(23,21,28,.09);--radius:22px;--shell:min(1180px,calc(100% - 40px));
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.72;-webkit-font-smoothing:antialiased}body.modal-open{overflow:hidden}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}p,h1,h2,h3,figure{margin-top:0}.shell{width:var(--shell);margin-inline:auto}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;left:16px;top:12px;z-index:9999;background:var(--accent);color:#1d1604;padding:10px 14px;border-radius:10px;transform:translateY(-160%);transition:.2s}.skip-link:focus{transform:none}.eyebrow{font-size:.79rem;letter-spacing:.15em;text-transform:uppercase;font-weight:800;color:var(--brand);margin-bottom:12px}.muted{color:var(--muted)}
.site-header{position:sticky;top:0;z-index:100;background:rgba(247,245,250,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.header-inner{width:var(--shell);height:76px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand-mark{display:flex;align-items:center;gap:12px;min-width:max-content}.brand-mark img{width:44px;height:44px;object-fit:contain}.brand-text{display:flex;flex-direction:column;line-height:1.05}.brand-text strong{font-size:1.42rem;color:var(--dark)}.brand-text small{font-size:.72rem;margin-top:5px;color:var(--muted)}.primary-nav{display:flex;align-items:center;gap:8px}.primary-nav>a,.search-open{border:0;background:transparent;padding:10px 13px;border-radius:999px;font-size:.93rem;color:#4f4a55}.primary-nav>a:hover,.primary-nav>a.is-active,.search-open:hover{background:var(--bg2);color:var(--brand)}.primary-nav>a.is-active{font-weight:700}.search-open{border:1px solid var(--line);margin-left:4px}.menu-toggle{display:none;border:0;background:transparent;width:44px;height:44px;border-radius:12px;padding:10px}.menu-toggle span{display:block;height:2px;background:var(--dark);margin:5px 0;border-radius:2px}
.search-modal[hidden]{display:none!important}.search-modal{position:fixed;inset:0;z-index:1000;display:grid;place-items:start center;padding:10vh 20px}.search-backdrop{position:absolute;inset:0;background:rgba(23,21,28,.72);backdrop-filter:blur(8px)}.search-panel{position:relative;width:min(720px,100%);background:var(--white);border-radius:28px;padding:36px;box-shadow:0 40px 120px rgba(0,0,0,.3)}.search-panel h2{font-size:clamp(1.5rem,4vw,2.35rem);line-height:1.15;margin-bottom:24px}.search-close{position:absolute;right:22px;top:18px;border:0;background:var(--bg2);width:40px;height:40px;border-radius:50%;font-size:1.5rem;color:var(--dark)}.search-form label{display:block;font-size:.9rem;font-weight:700;margin-bottom:8px}.search-row{display:flex;gap:10px}.search-row input{flex:1;min-width:0;border:1px solid var(--line);background:var(--bg);padding:14px 16px;border-radius:14px;outline:none}.search-row input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(109,40,217,.12)}.search-row button{border:0;background:var(--brand);color:#fff;border-radius:14px;padding:0 22px;font-weight:700}
main{min-height:60vh}.home-intro{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:76px 0 58px}.intro-copy h1{font-size:clamp(2.45rem,5.1vw,5.1rem);line-height:.98;letter-spacing:-.045em;margin-bottom:24px;color:var(--dark);max-width:820px}.lede{font-size:1.07rem;color:#5f5966;max-width:720px}.intro-actions,.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.button{display:inline-flex;align-items:center;justify-content:center;padding:13px 18px;border-radius:14px;font-weight:800;min-height:48px}.button.primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px rgba(109,40,217,.2)}.button.primary:hover{transform:translateY(-1px)}.button.ghost{border:1px solid var(--line);background:rgba(255,255,255,.55)}.intro-visual{position:relative}.intro-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:32px;box-shadow:var(--shadow);background:var(--bg2)}.intro-visual figcaption{position:absolute;left:22px;right:22px;bottom:18px;background:rgba(23,21,28,.86);color:#f3eefc;padding:12px 16px;border-radius:14px;font-size:.88rem;backdrop-filter:blur(8px)}
.signal-strip{background:var(--dark);color:#fff}.signal-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(255,255,255,.09)}.signal-grid>div{background:var(--dark);padding:26px 28px}.signal-grid span{display:inline-grid;place-items:center;width:38px;height:38px;border:1px solid rgba(167,139,250,.45);border-radius:50%;color:var(--brand-soft);font-size:.82rem;margin-bottom:16px}.signal-grid strong{display:block;font-size:1.05rem;margin-bottom:6px}.signal-grid p{color:#aaa4b3;margin:0;font-size:.91rem}
.split-section{display:grid;grid-template-columns:.8fr 1.2fr;gap:72px;padding:90px 0}.section-heading h2{font-size:clamp(1.75rem,3.2vw,3.2rem);line-height:1.12;letter-spacing:-.025em;margin-bottom:16px;color:var(--dark)}.section-heading p{color:var(--muted)}.section-heading.narrow{max-width:520px}.section-heading.wide{max-width:850px}.text-link{color:var(--brand);font-weight:800;display:inline-flex;margin-top:8px}.compact-list{border-top:1px solid var(--line)}.compact-row{display:block;padding:18px 0;border-bottom:1px solid var(--line)}.compact-row span{display:block;font-weight:800;font-size:1.05rem;color:var(--dark);margin-bottom:5px}.compact-row small{display:block;color:var(--muted);font-size:.89rem;line-height:1.6}.compact-row:hover span{color:var(--brand)}
.video-band{background:var(--bg2);padding:92px 0}.feature-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px;margin-top:34px}.feature-item{background:#fff;border-radius:20px;overflow:hidden;border:1px solid rgba(39,36,45,.08)}.feature-item.feature-large{grid-row:span 2}.feature-image{display:block;background:#ddd6e7}.feature-image img{width:100%;aspect-ratio:16/9;object-fit:cover}.feature-large .feature-image img{aspect-ratio:4/3}.feature-item>div{padding:20px}.feature-item h3{font-size:1.1rem;line-height:1.3;margin-bottom:8px}.feature-large h3{font-size:1.5rem}.feature-item h3 a:hover{color:var(--brand)}.feature-item p{font-size:.89rem;color:var(--muted);margin-bottom:0}.meta{font-size:.72rem!important;letter-spacing:.08em;text-transform:uppercase;color:var(--brand)!important;font-weight:800}.section-cta{display:flex;align-items:center;justify-content:center;margin:28px auto 0;padding:13px 18px;border:1px solid rgba(109,40,217,.24);border-radius:14px;width:max-content;max-width:100%;color:var(--brand);font-weight:800;background:rgba(255,255,255,.6)}
.free-note{display:grid;grid-template-columns:1fr .85fr;gap:52px;align-items:center;padding:90px 0}.free-copy h2{font-size:clamp(1.8rem,3vw,3.2rem);line-height:1.12;margin-bottom:18px}.free-copy p{color:var(--muted)}.free-note img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:26px;box-shadow:var(--shadow)}
.index-section{padding:0 0 94px}.index-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:34px;border:1px solid var(--line);border-radius:24px;overflow:hidden;background:#fff}.index-block{padding:28px;border-right:1px solid var(--line)}.index-block:last-child{border-right:0}.index-block h3{font-size:1.25rem}.index-block p{color:var(--muted);font-size:.9rem}.index-block a{display:block;padding:11px 0;border-top:1px solid var(--line);font-size:.9rem;font-weight:700}.index-block a:hover{color:var(--brand)}
.editorial-list{padding:0 0 100px}.editorial-rows{margin-top:28px;border-top:1px solid var(--line)}.editorial-rows article{display:grid;grid-template-columns:56px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}.editorial-rows>article>span{font-weight:800;color:var(--brand-soft)}.editorial-rows h3{margin-bottom:5px;font-size:1.05rem}.editorial-rows h3 a:hover{color:var(--brand)}.editorial-rows p{margin:0;color:var(--muted);font-size:.9rem}.closing-band{background:var(--dark);color:#fff;padding:68px 0}.closing-inner{display:grid;grid-template-columns:1.25fr .75fr;gap:70px;align-items:start}.closing-inner .eyebrow{color:var(--brand-soft)}.closing-inner h2{font-size:clamp(1.8rem,3vw,3rem);line-height:1.12}.closing-inner p{color:#aaa4b3}.closing-links{display:grid;gap:10px}.closing-links a{padding:14px 16px;border:1px solid rgba(255,255,255,.14);border-radius:14px}.closing-links a:hover{border-color:var(--brand-soft);color:var(--brand-soft)}
.breadcrumbs{width:var(--shell);margin:28px auto 0}.breadcrumbs ol{list-style:none;padding:0;margin:0;display:flex;gap:8px;flex-wrap:wrap;font-size:.82rem;color:var(--muted)}.breadcrumbs li:not(:last-child)::after{content:"/";margin-left:8px;color:#b0a9b7}.breadcrumbs a:hover{color:var(--brand)}.page-hero{padding:56px 0 50px}.page-hero-narrow{max-width:900px;margin-left:calc((100% - min(1180px,100% - 40px))/2)}.page-hero h1{font-size:clamp(2.3rem,5vw,4.8rem);line-height:1.02;letter-spacing:-.04em;max-width:1040px}.page-hero p:not(.eyebrow){font-size:1.05rem;color:var(--muted);max-width:850px}
.brand-facts{display:grid;grid-template-columns:1fr 1fr .9fr;gap:18px;align-items:stretch;padding-bottom:76px}.brand-facts>div{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px}.brand-facts h2{font-size:1.18rem}.brand-facts p{color:var(--muted);margin-bottom:0}.brand-facts img{width:100%;height:100%;min-height:230px;object-fit:cover;border-radius:20px}.content-ledger{padding:20px 0 90px}.ledger-list{margin-top:28px;border-top:2px solid var(--dark)}.ledger-list article{display:grid;grid-template-columns:56px 1fr 44px;gap:18px;align-items:start;padding:19px 0;border-bottom:1px solid var(--line)}.ledger-list>article>span{font-size:.78rem;color:var(--brand);font-weight:800}.ledger-list h3{margin-bottom:5px;font-size:1.05rem}.ledger-list h3 a:hover{color:var(--brand)}.ledger-list p{margin:0;color:var(--muted);font-size:.9rem}.arrow{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--bg2);color:var(--brand)}.next-path{display:flex;justify-content:space-between;align-items:center;gap:34px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:32px;margin-bottom:90px}.next-path h2{font-size:1.4rem;margin-bottom:8px}.next-path p{margin:0;color:var(--muted);max-width:700px}
.video-hero{padding:58px 0;background:var(--dark);color:#fff}.video-hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}.video-hero .eyebrow{color:var(--brand-soft)}.video-hero h1{font-size:clamp(2.4rem,5vw,4.7rem);line-height:1.02;letter-spacing:-.04em}.video-hero p{color:#b6afbd}.video-hero img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:28px}.hero-inline-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.hero-inline-links a{border:1px solid rgba(255,255,255,.15);border-radius:999px;padding:9px 13px;font-size:.85rem;color:#e2dced}.viewing-principles{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:22px;overflow:hidden;margin-top:56px}.viewing-principles article{background:#fff;padding:24px}.viewing-principles span{color:var(--brand);font-weight:800;font-size:.8rem}.viewing-principles h2{font-size:1.1rem;margin:10px 0 6px}.viewing-principles p{color:var(--muted);font-size:.9rem;margin:0}.masonry-list{padding:82px 0}.masonry-grid{column-count:3;column-gap:18px;margin-top:34px}.masonry-card{break-inside:avoid;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;margin:0 0 18px}.masonry-card img{width:100%;aspect-ratio:16/10;object-fit:cover}.masonry-card>div{padding:20px}.masonry-card h3{font-size:1.16rem;line-height:1.28;margin-bottom:8px}.masonry-card p{color:var(--muted);font-size:.89rem}.video-help{background:var(--bg2);padding:68px 0}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:60px}.two-col h2{font-size:1.55rem;line-height:1.25}.two-col p{color:var(--muted)}
.free-boundary{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:start;padding-bottom:66px}.boundary-main{background:#fff;padding:32px;border-radius:24px;border:1px solid var(--line)}.boundary-main h2{font-size:1.45rem}.boundary-main ol{padding:0;list-style:none;counter-reset:free}.boundary-main li{counter-increment:free;display:grid;grid-template-columns:36px 1fr;gap:12px;padding:17px 0;border-bottom:1px solid var(--line)}.boundary-main li::before{content:counter(free,decimal-leading-zero);color:var(--brand);font-weight:800}.boundary-main li strong,.boundary-main li span{grid-column:2}.boundary-main li span{color:var(--muted);font-size:.9rem}.free-boundary img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:24px}
.dimension-layout{display:grid;grid-template-columns:330px 1fr;gap:42px;padding-bottom:88px}.dimension-layout aside{position:sticky;top:104px;align-self:start;background:var(--dark);color:#fff;padding:20px;border-radius:22px}.dimension-layout aside img{border-radius:14px;margin-bottom:20px}.dimension-layout aside h2{font-size:1.15rem}.dimension-layout aside p{color:#aaa4b3;font-size:.9rem;margin:0}.dimension-list{border-top:1px solid var(--line)}.dimension-list article{padding:20px 0;border-bottom:1px solid var(--line)}.dimension-list h3{font-size:1.1rem;margin-bottom:7px}.dimension-list p{color:var(--muted);font-size:.9rem}
.topic-groups{padding:10px 0 90px}.topic-group{padding:30px 0 52px;border-top:1px solid var(--line)}.topic-group-head{display:grid;grid-template-columns:90px 1fr 110px;gap:22px;align-items:start}.topic-group-head>span{font-size:.75rem;color:var(--brand);font-weight:900;letter-spacing:.1em}.topic-group-head h2{font-size:1.8rem;margin-bottom:6px}.topic-group-head p{color:var(--muted);margin:0;max-width:760px}.topic-group-head>strong{text-align:right;color:var(--muted);font-size:.82rem}.topic-mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:26px 0 10px 112px}.topic-mini-grid a{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px}.topic-mini-grid strong{display:block;font-size:.93rem;margin-bottom:5px}.topic-mini-grid span{display:block;color:var(--muted);font-size:.8rem;line-height:1.5}.topic-mini-grid a:hover{border-color:rgba(109,40,217,.35)}.group-more{margin-left:112px}
.guide-cover{background:var(--bg2);padding:58px 0}.guide-cover-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}.guide-cover h1{font-size:clamp(2.3rem,4.7vw,4.6rem);line-height:1.03;letter-spacing:-.04em}.guide-cover p{color:var(--muted)}.guide-cover img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:26px}.guide-shortcuts{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;padding:44px 0}.guide-shortcuts a{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}.guide-shortcuts span{font-size:.72rem;color:var(--brand);font-weight:800}.guide-shortcuts strong{display:block;margin:6px 0 2px}.guide-shortcuts small{color:var(--muted);font-size:.78rem}.guide-index{padding:28px 0 90px}.guide-rows{margin-top:26px}.guide-rows article{display:grid;grid-template-columns:56px 1fr 70px;gap:16px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}.guide-num{font-size:.8rem;color:var(--brand-soft);font-weight:800}.guide-rows h3{margin-bottom:4px;font-size:1.02rem}.guide-rows p{margin:0;color:var(--muted);font-size:.88rem}.guide-go{text-align:right;color:var(--brand);font-weight:800;font-size:.86rem}
.faq-layout{display:grid;grid-template-columns:1fr 320px;gap:44px;padding:10px 0 90px}.faq-list details{border-bottom:1px solid var(--line);padding:4px 0}.faq-list summary{list-style:none;cursor:pointer;font-weight:800;padding:18px 42px 18px 0;position:relative}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary::after{content:"+";position:absolute;right:8px;top:16px;color:var(--brand);font-size:1.35rem}.faq-list details[open] summary::after{content:"−"}.faq-list details div{padding:0 36px 18px 0;color:var(--muted)}.faq-layout aside{align-self:start;background:#fff;border:1px solid var(--line);border-radius:22px;padding:20px;position:sticky;top:104px}.faq-layout aside img{border-radius:14px;margin-bottom:18px}.faq-layout aside h2{font-size:1.15rem}.faq-layout aside p{font-size:.9rem;color:var(--muted)}.faq-layout aside a{display:block;padding:9px 0;border-top:1px solid var(--line);font-size:.88rem;font-weight:700}
.about-cover{background:var(--dark);color:#fff;padding:64px 0}.about-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center}.about-cover .eyebrow{color:var(--brand-soft)}.about-cover h1{font-size:clamp(2.3rem,5vw,4.7rem);line-height:1.02;letter-spacing:-.04em}.about-cover p{color:#b6afbd}.about-cover img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:26px}.principles{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:24px;overflow:hidden;margin:64px auto 80px}.principles article{background:#fff;padding:30px}.principles h2{font-size:1.2rem}.principles p{color:var(--muted);margin:0}.policy-layout,.contact-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:50px;align-items:start;padding-bottom:90px}.policy-layout>img,.contact-layout>img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:24px;position:sticky;top:104px}.policy-layout h2{font-size:1.16rem;margin:28px 0 8px}.policy-layout h2:first-child{margin-top:0}.policy-layout p{color:var(--muted)}
.safety-cover{background:var(--dark);color:#fff;padding:58px 0}.safety-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center}.safety-cover .eyebrow{color:var(--accent)}.safety-cover h1{font-size:clamp(2.2rem,4.6vw,4.4rem);line-height:1.03}.safety-cover p{color:#b8b2c0}.safety-cover img{border-radius:24px;aspect-ratio:16/11;object-fit:cover}.safety-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding:58px 0 76px}.safety-steps article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.safety-steps span{color:var(--accent);font-weight:900}.safety-steps h2{font-size:1.05rem;margin:12px 0 6px}.safety-steps p{color:var(--muted);font-size:.86rem;margin:0}.contact-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px}.contact-card h2{font-size:1.35rem}.contact-card ul{padding-left:20px;color:var(--muted)}.contact-email{margin-top:22px;padding:14px;background:var(--bg2);border-radius:12px}.contact-email a{color:var(--brand);font-weight:800}.contact-routes{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding-bottom:90px}.contact-routes a{background:var(--bg2);padding:20px;border-radius:16px}.contact-routes strong,.contact-routes span{display:block}.contact-routes span{color:var(--muted);font-size:.84rem;margin-top:4px}
.search-page{padding:56px 0 90px}.search-page h1{font-size:clamp(2.2rem,4.8vw,4.5rem);line-height:1.05}.search-form-page{max-width:820px;margin:24px 0 36px}.result-count{color:var(--muted);font-size:.9rem}.search-results{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.search-results article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.search-results article>span{font-size:.75rem;color:var(--brand);font-weight:800}.search-results h2{font-size:1.12rem;line-height:1.3;margin:8px 0}.search-results p{font-size:.88rem;color:var(--muted)}.empty-state{background:#fff;border:1px solid var(--line);border-radius:24px;padding:34px;max-width:820px}.empty-state img{width:180px;height:120px;object-fit:cover;border-radius:14px;margin-bottom:20px}.empty-state h2{font-size:1.35rem}.empty-state p{color:var(--muted)}
.article-page{padding:50px 0 90px}.article-header{max-width:900px;margin:0 auto 34px}.article-header h1{font-size:clamp(2.25rem,5vw,4.6rem);line-height:1.04;letter-spacing:-.035em}.article-deck{font-size:1.08rem;color:var(--muted)}.article-context{display:flex;gap:16px;flex-wrap:wrap;margin-top:22px;font-size:.84rem;color:var(--muted)}.article-context a{color:var(--brand);font-weight:800}.article-figure{max-width:1040px;margin:0 auto 44px}.article-figure img{width:100%;max-height:500px;object-fit:cover;border-radius:26px;background:var(--bg2)}.article-figure figcaption{font-size:.78rem;color:var(--muted);margin-top:8px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:54px;max-width:1040px;margin:auto}.article-body section{padding-bottom:28px;margin-bottom:28px;border-bottom:1px solid var(--line)}.article-body h2{font-size:1.35rem;margin-bottom:10px}.article-body p{color:#4e4954}.article-checklist ul{padding-left:20px}.article-checklist li{margin:8px 0}.article-aside{align-self:start;position:sticky;top:104px}.article-aside h2{font-size:1rem;margin-bottom:10px}.article-aside>a{display:block;border-top:1px solid var(--line);padding:13px 0}.article-aside strong,.article-aside span{display:block}.article-aside strong{font-size:.88rem}.article-aside span{font-size:.76rem;color:var(--muted);margin-top:4px}.article-aside .aside-all{color:var(--brand);font-weight:800;font-size:.86rem}
.not-found{min-height:62vh;display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center;padding:72px 0}.not-found h1{font-size:clamp(2.4rem,5vw,4.8rem);line-height:1.02}.not-found p{color:var(--muted)}.not-found img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:28px}
.site-footer{background:#120f15;color:#d9d3de;padding:58px 0 22px}.footer-grid{width:var(--shell);margin:auto;display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:38px}.footer-grid section h2{font-size:.9rem;color:#fff;margin-bottom:14px}.footer-grid section p{color:#8f8895;font-size:.86rem}.footer-brand{font-size:1.7rem!important;color:#fff!important;font-weight:900;margin-bottom:8px}.footer-grid a{display:block;padding:5px 0;color:#9f98a6;font-size:.84rem}.footer-grid a:hover{color:var(--brand-soft)}.footer-bottom{width:var(--shell);margin:36px auto 0;padding-top:18px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;gap:20px;color:#6f6874;font-size:.78rem}.back-top{position:fixed;right:20px;bottom:20px;width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.2);background:var(--dark);color:#fff;box-shadow:var(--shadow);opacity:0;pointer-events:none;transform:translateY(10px);transition:.2s}.back-top.is-visible{opacity:1;pointer-events:auto;transform:none}
@media (max-width:1024px){:root{--shell:min(100% - 32px,940px)}.primary-nav{position:absolute;left:16px;right:16px;top:68px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow);display:none;flex-direction:column;align-items:stretch}.primary-nav.is-open{display:flex}.primary-nav>a,.search-open{text-align:left;width:100%;margin:0}.menu-toggle{display:block}.home-intro,.video-hero-grid,.guide-cover-grid,.about-grid,.safety-grid{grid-template-columns:1fr}.home-intro{padding-top:52px}.intro-copy h1{max-width:900px}.intro-visual{max-width:760px}.feature-grid{grid-template-columns:1fr 1fr}.feature-item.feature-large{grid-column:1/-1;grid-row:auto}.feature-large .feature-image img{aspect-ratio:16/8}.brand-facts{grid-template-columns:1fr 1fr}.brand-facts img{grid-column:1/-1;max-height:380px}.masonry-grid{column-count:2}.guide-shortcuts,.safety-steps{grid-template-columns:1fr 1fr}.topic-mini-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}.footer-grid section:last-child{grid-column:2/-1}.page-hero-narrow{margin-left:auto}}
@media (max-width:768px){:root{--shell:calc(100% - 28px)}.header-inner{height:66px}.brand-mark img{width:38px;height:38px}.brand-text strong{font-size:1.25rem}.home-intro{grid-template-columns:1fr;gap:34px;padding:48px 0}.intro-copy h1{font-size:clamp(2.5rem,11vw,4.2rem)}.signal-grid,.index-columns,.viewing-principles,.two-col,.principles,.search-results,.contact-routes{grid-template-columns:1fr}.signal-grid{background:transparent}.signal-grid>div{border-bottom:1px solid rgba(255,255,255,.08)}.split-section,.free-note,.closing-inner,.free-boundary,.dimension-layout,.faq-layout,.policy-layout,.contact-layout,.article-layout,.not-found{grid-template-columns:1fr;gap:34px}.split-section{padding:64px 0}.video-band{padding:64px 0}.feature-grid{grid-template-columns:1fr}.feature-large .feature-image img{aspect-ratio:16/10}.free-note{padding:64px 0}.index-block{border-right:0;border-bottom:1px solid var(--line)}.index-block:last-child{border-bottom:0}.closing-band{padding:54px 0}.page-hero{padding:44px 0 36px}.brand-facts{grid-template-columns:1fr}.brand-facts img{grid-column:auto}.masonry-grid{column-count:1}.topic-group-head{grid-template-columns:1fr}.topic-group-head>strong{text-align:left}.topic-mini-grid{margin-left:0}.group-more{margin-left:0}.dimension-layout aside,.faq-layout aside,.policy-layout>img,.contact-layout>img,.article-aside{position:static}.guide-shortcuts,.safety-steps{grid-template-columns:1fr 1fr}.article-aside{border-top:1px solid var(--line);padding-top:20px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid section:last-child{grid-column:auto}.next-path{align-items:flex-start;flex-direction:column}.not-found{padding:52px 0}}
@media (max-width:600px){.search-panel{padding:28px 20px}.search-row{flex-direction:column}.search-row button{min-height:48px}.intro-actions,.button-row{flex-direction:column;align-items:stretch}.button{width:100%}.guide-shortcuts,.safety-steps,.footer-grid{grid-template-columns:1fr}.topic-mini-grid{grid-template-columns:1fr}.guide-rows article{grid-template-columns:42px 1fr}.guide-go{grid-column:2;text-align:left}.ledger-list article{grid-template-columns:38px 1fr}.ledger-list .arrow{display:none}.footer-grid section:last-child{grid-column:auto}.footer-bottom{flex-direction:column}.article-header h1{font-size:2.3rem}.home-intro,.page-hero{overflow-wrap:anywhere}}
@media (max-width:375px){:root{--shell:calc(100% - 22px)}.brand-text small{display:none}.home-intro{padding-top:38px}.intro-copy h1{font-size:2.45rem}.section-heading h2{font-size:1.8rem}.search-panel{padding:24px 16px}.page-hero h1{font-size:2.3rem}.article-page{padding-top:36px}}

.handbook-groups{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding:10px 0 90px}.handbook-groups article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px}.handbook-groups article>span{font-size:.74rem;color:var(--brand);font-weight:800}.handbook-groups h2{font-size:1.2rem;margin:10px 0 7px}.handbook-groups p{color:var(--muted);font-size:.88rem}.handbook-list{padding:10px 0 80px}.handbook-list article{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:24px 0;border-bottom:1px solid var(--line)}.handbook-number{font-size:.8rem;color:var(--brand-soft);font-weight:900;padding-top:5px}.handbook-list h2{font-size:1.15rem;margin-bottom:8px}.handbook-list p{color:#4f4a55;margin-bottom:12px}.handbook-list aside{background:var(--bg2);border-left:3px solid var(--brand-soft);padding:11px 14px;border-radius:0 10px 10px 0;color:var(--muted);font-size:.84rem}.guide-shortcuts{grid-template-columns:repeat(5,1fr)}
@media (max-width:1024px){.handbook-groups{grid-template-columns:1fr 1fr}.guide-shortcuts{grid-template-columns:repeat(3,1fr)}}
@media (max-width:600px){.handbook-groups,.guide-shortcuts{grid-template-columns:1fr}.handbook-list article{grid-template-columns:42px 1fr}}

.handbook-pagination{display:flex;gap:8px;flex-wrap:wrap;margin-top:-46px;margin-bottom:70px}.handbook-pagination a{display:grid;place-items:center;min-width:40px;height:40px;padding:0 12px;border:1px solid var(--line);background:#fff;border-radius:10px;font-weight:800;font-size:.85rem}.handbook-pagination a.is-current{background:var(--brand);color:#fff;border-color:var(--brand)}