:root{--bg:#fff;--sub:#F7FAFE;--soft:#EDF5FF;--soft2:#E3F0FF;--gray:#F4F6F9;--title:#17243A;--text:#3C495D;--muted:#6E7988;--hint:#99A2AF;--blue:#1478F2;--blue2:#348FFF;--deep:#0765D4;--dark:#094D9E;--line:rgba(20,120,242,.12);--nline:rgba(20,40,70,.08);--shadow:0 14px 38px rgba(35,72,118,.08);--bshadow:0 16px 44px rgba(20,120,242,.14);--radius:16px;--max:1320px;--header:72px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;line-height:1.75;overflow-x:hidden}body.panel-open{overflow:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}button,input{font:inherit}button{cursor:pointer}a,button,input,summary{outline:none}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid rgba(20,120,242,.28);outline-offset:3px}.wrap{width:min(var(--max),calc(100% - 40px));margin:0 auto}.skip-link{position:fixed;left:12px;top:-60px;background:#fff;color:var(--blue);z-index:9999;padding:10px 14px;border-radius:8px;box-shadow:var(--shadow)}.skip-link:focus{top:10px}.mobile-only{display:none}
.site-header{position:fixed;top:0;left:0;right:0;z-index:120;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-bottom:1px solid var(--nline)}.topbar{height:var(--header);display:flex;align-items:center;gap:22px}.brand{display:flex;align-items:center;min-width:max-content}.brand img,.panel-brand img{max-height:48px;width:auto}.brand-fallback{display:flex;flex-direction:column;line-height:1.05;color:#fff;background:var(--blue);padding:8px 12px;border-radius:10px;box-shadow:var(--bshadow)}.brand-fallback strong{font-size:18px;letter-spacing:.08em}.brand-fallback small{font-size:8px;letter-spacing:.16em;margin-top:4px}.desktop-nav{display:flex;align-items:center;gap:2px;min-width:0;white-space:nowrap;flex:1}.desktop-nav a,.header-link{position:relative;display:flex;align-items:center;min-height:44px;padding:0 13px;border-radius:10px;color:var(--text);font-size:15px}.desktop-nav a:hover,.header-link:hover{background:var(--soft);color:var(--blue)}.desktop-nav a.is-current,.header-link.is-current{color:var(--blue);font-weight:700}.desktop-nav a.is-current:after,.header-link.is-current:after{content:"";position:absolute;left:50%;bottom:4px;width:5px;height:5px;border-radius:50%;background:var(--blue);transform:translateX(-50%)}.header-actions{margin-left:auto;display:flex;align-items:center;gap:4px}.icon-button{border:0;background:transparent;color:var(--title);min-width:44px;min-height:44px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;gap:7px}.icon-button:hover{background:var(--soft);color:var(--blue)}.search-icon{width:17px;height:17px;border:2px solid currentColor;border-radius:50%;position:relative;display:inline-block}.search-icon:after{content:"";position:absolute;width:7px;height:2px;background:currentColor;right:-5px;bottom:-2px;transform:rotate(45deg);border-radius:2px}.grid-icon{display:grid;grid-template-columns:repeat(3,4px);gap:3px}.grid-icon i{width:4px;height:4px;background:currentColor;border-radius:1px}.action-text{font-size:14px}main{padding-top:var(--header)}
.section{padding:76px 0}.section-sm{padding:52px 0}.bg-sub{background:var(--sub)}.bg-soft{background:var(--soft)}.bg-gray{background:var(--gray)}.section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:28px}.section-head h2,.section-head h1{margin:0;color:var(--title);line-height:1.2}.section-head h2{font-size:clamp(28px,3vw,42px)}.section-head p{max-width:680px;margin:0;color:var(--muted)}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase}.eyebrow:before{content:"";width:22px;height:2px;background:var(--blue);border-radius:2px}.lead{font-size:18px;color:var(--muted);max-width:780px}.text-link{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-weight:700}.text-link:after{content:"→";transition:transform .2s}.text-link:hover:after{transform:translateX(3px)}.primary-link{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:12px;color:#fff;background:linear-gradient(135deg,#43A0FF 0%,#1478F2 56%,#0964CE 100%);font-weight:700;box-shadow:var(--bshadow)}.primary-link:hover{filter:brightness(.98);transform:translateY(-1px)}.secondary-link{display:inline-flex;align-items:center;min-height:44px;color:var(--blue);font-weight:700}.pill{display:inline-flex;padding:5px 9px;border-radius:999px;background:var(--soft);color:var(--blue);font-size:12px;font-weight:700}.card{background:#fff;border:1px solid var(--nline);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.card h3{margin:0 0 10px;color:var(--title)}.card p{margin:0;color:var(--muted)}
.content-index{border-bottom:1px solid var(--nline);background:#fff}.content-index .wrap{display:flex;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:none}.content-index .wrap::-webkit-scrollbar{display:none}.content-index a{flex:0 0 auto;display:flex;align-items:center;min-height:52px;padding:0 18px;color:var(--muted);font-size:14px}.content-index a:hover{color:var(--blue)}.content-index a:before{content:"";width:5px;height:5px;border-radius:50%;background:transparent;margin-right:8px}.content-index a.is-current{color:var(--blue);font-weight:700}.content-index a.is-current:before{background:var(--blue)}
.hero-explore{padding:42px 0 56px;background:linear-gradient(180deg,#fff 0%,#f8fbff 100%)}.hero-grid{display:grid;grid-template-columns:28fr 47fr 25fr;gap:20px;align-items:stretch}.hero-left,.hero-right,.hero-center{min-width:0}.hero-left{padding:34px 12px 28px 0}.hero-left h1{font-size:clamp(36px,4.6vw,64px);line-height:1.08;color:var(--title);margin:14px 0 20px;letter-spacing:-.03em}.hero-left p{color:var(--muted);margin:0 0 24px}.hero-actions{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.mini-index{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:32px}.mini-index a{padding:14px;border-top:1px solid var(--line);color:var(--title);font-weight:700}.hero-center{min-height:520px;border-radius:24px;overflow:hidden;position:relative;background:radial-gradient(circle at 70% 20%,rgba(52,143,255,.3),transparent 34%),linear-gradient(145deg,#e9f3ff 0%,#cfe5ff 58%,#eef7ff 100%);box-shadow:var(--bshadow)}.hero-center img{width:100%;height:100%;object-fit:cover}.hero-center.fallback-visual:before,.hero-center.fallback-visual:after{content:"";position:absolute;border:1px solid rgba(20,120,242,.22);border-radius:50%}.hero-center.fallback-visual:before{width:360px;height:360px;right:-80px;top:-80px}.hero-center.fallback-visual:after{width:220px;height:220px;left:18%;bottom:-70px}.hero-map-lines{position:absolute;inset:0;background-image:linear-gradient(rgba(20,120,242,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(20,120,242,.06) 1px,transparent 1px);background-size:42px 42px;pointer-events:none}.hero-map-copy{position:absolute;left:28px;bottom:26px;right:28px;padding:22px;border-radius:16px;background:rgba(255,255,255,.88);backdrop-filter:blur(10px)}.hero-map-copy strong{display:block;color:var(--title);font-size:20px}.hero-right{display:flex;flex-direction:column;border-left:1px solid var(--nline)}.discover-item{padding:18px 0 18px 22px;border-bottom:1px solid var(--nline);flex:1;display:flex;flex-direction:column;justify-content:center}.discover-item:last-child{border-bottom:0}.discover-item h3{font-size:17px;margin:0 0 7px;color:var(--title)}.discover-item p{font-size:14px;line-height:1.7;margin:0 0 8px;color:var(--muted)}
.number-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.number-item{position:relative;padding:26px 24px 24px;border-top:3px solid var(--blue);background:#fff;border-radius:0 0 16px 16px;box-shadow:var(--shadow)}.number-item .num{display:block;font-size:46px;line-height:1;color:var(--soft2);font-weight:900;letter-spacing:-.06em}.number-item h3{font-size:21px;color:var(--title);margin:8px 0}.number-item p{color:var(--muted);margin:0 0 14px}.magazine-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:18px}.magazine-card{min-height:220px;padding:24px;border-radius:18px;background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;justify-content:flex-end;position:relative;overflow:hidden}.magazine-card.large{grid-row:span 2;min-height:460px;background:linear-gradient(165deg,#dcecff,#fff)}.magazine-card.wide{grid-column:span 2}.magazine-card:before{content:"";position:absolute;width:160px;height:160px;border:1px solid var(--line);border-radius:50%;right:-45px;top:-45px;pointer-events:none}.magazine-card h3,.magazine-card p,.magazine-card a{position:relative;z-index:1}.magazine-card h3{margin:0 0 8px;color:var(--title)}.magazine-card p{margin:0 0 12px;color:var(--muted)}
.plan-board{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.plan-column{background:#fff;border-radius:16px;border:1px solid var(--nline);padding:20px}.plan-column h3{margin:0 0 14px;color:var(--blue);font-size:16px}.plan-entry{padding:14px 0;border-top:1px solid var(--nline)}.plan-entry strong{display:block;color:var(--title);margin-bottom:5px}.plan-entry p{margin:0;color:var(--muted);font-size:14px}.masonry-text{columns:3;column-gap:18px}.masonry-text article{break-inside:avoid;margin:0 0 18px;padding:24px;border-radius:16px;border:1px solid var(--nline);background:#fff}.masonry-text article:nth-child(3n+2){padding-bottom:36px}.masonry-text h3{margin-top:0;color:var(--title)}.masonry-text p{margin-bottom:0;color:var(--muted)}
.timeline{position:relative;max-width:980px;margin:0 auto}.timeline:before{content:"";position:absolute;left:36px;top:18px;bottom:18px;width:2px;background:var(--line)}.timeline-step{display:grid;grid-template-columns:74px 1fr;gap:24px;position:relative;padding:18px 0}.timeline-node{width:74px;height:74px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#fff;border:2px solid var(--blue);color:var(--blue);font-weight:900;z-index:1}.timeline-copy{padding:18px 22px;background:#fff;border:1px solid var(--nline);border-radius:16px}.timeline-copy h3{margin:0 0 6px;color:var(--title)}.timeline-copy p{margin:0;color:var(--muted)}.tag-wall{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.tag-wall a{display:inline-flex;align-items:center;min-height:48px;padding:0 20px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--title);font-weight:700;box-shadow:0 8px 24px rgba(35,72,118,.05)}.tag-wall a:nth-child(3n+1){font-size:20px;padding:0 26px;min-height:58px}.tag-wall a:nth-child(4n+2){background:var(--soft)}.tag-wall a:hover{color:var(--blue);border-color:rgba(20,120,242,.28)}
.qa-list{display:grid;gap:14px}.qa-item{display:grid;grid-template-columns:minmax(220px, .8fr) 1.6fr;gap:26px;padding:24px 0;border-top:1px solid var(--nline)}.qa-item h3{margin:0;color:var(--title);font-size:20px}.qa-item p{margin:0;color:var(--muted)}.story-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:28px}.main-story{padding:34px;background:linear-gradient(180deg,var(--soft),#fff);border-radius:20px;border:1px solid var(--line)}.main-story h2{font-size:34px;line-height:1.25;color:var(--title);margin:10px 0 18px}.main-story p{font-size:17px}.short-stories{display:grid;gap:12px}.short-story{padding:18px 0;border-bottom:1px solid var(--nline)}.short-story h3{margin:0 0 6px;color:var(--title)}.short-story p{margin:0;color:var(--muted)}.catalog-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.catalog-card{min-height:230px;padding:22px;border:1px solid var(--nline);background:#fff;border-radius:14px;display:flex;flex-direction:column;justify-content:space-between}.catalog-card:nth-child(3n+1){grid-row:span 2;min-height:474px;background:var(--soft)}.catalog-card h3{margin:0;color:var(--title);font-size:21px}.catalog-card p{color:var(--muted)}.feature-list{counter-reset:feature;display:grid;gap:18px}.feature-item{display:grid;grid-template-columns:180px 1fr;gap:26px;padding:30px;border-radius:18px;background:#fff;border:1px solid var(--nline)}.feature-label{font-size:16px;font-weight:900;color:var(--blue);letter-spacing:.08em}.feature-item h3{font-size:30px;margin:0 0 12px;color:var(--title)}.feature-item p{margin:0 0 12px;color:var(--muted)}.article-index{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.article-index article{padding:24px;background:#fff;border-left:4px solid var(--blue);border-radius:0 14px 14px 0;box-shadow:var(--shadow)}.article-index h3{margin-top:0;color:var(--title)}.article-index p{color:var(--muted)}
.folder-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.folder{position:relative;padding:30px 22px 24px;background:#fff;border:1px solid var(--nline);border-radius:8px 16px 16px 16px;box-shadow:var(--shadow)}.folder:before{content:"";position:absolute;left:0;top:-12px;width:46%;height:14px;background:var(--soft2);border-radius:8px 8px 0 0;border:1px solid var(--line);border-bottom:0}.folder h3{margin:0 0 8px;color:var(--title)}.folder p{color:var(--muted);margin:0 0 12px}.notice-board{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.notice{padding:22px 24px;background:#fff;border:1px solid var(--nline);border-radius:12px;display:grid;grid-template-columns:110px 1fr;gap:18px}.notice .status{color:var(--blue);font-size:13px;font-weight:800}.notice h3{margin:0 0 6px;color:var(--title)}.notice p{margin:0;color:var(--muted)}.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.principle{padding:24px;border-radius:16px;background:#fff;border:1px solid var(--nline)}.principle .index{font-size:13px;color:var(--blue);font-weight:900}.principle h3{color:var(--title);margin:8px 0}.principle p{margin:0;color:var(--muted)}
.app-showcase{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}.app-visual{min-height:520px;background:linear-gradient(145deg,#e8f3ff,#cfe5ff);border-radius:28px;padding:30px;display:flex;align-items:center;justify-content:center;box-shadow:var(--bshadow)}.app-visual img{max-height:520px;width:auto}.app-fallback{width:min(280px,78%);aspect-ratio:9/18;border:8px solid #fff;border-radius:36px;background:linear-gradient(180deg,#1478F2,#eaf4ff);box-shadow:0 30px 60px rgba(9,77,158,.18);position:relative}.app-fallback:after{content:"海角社区";position:absolute;inset:40% 0 auto;text-align:center;color:#fff;font-size:28px;font-weight:900}.app-copy h1{font-size:48px;line-height:1.1;color:var(--title);margin:12px 0 20px}.feature-quad{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0}.feature-quad div{padding:16px;background:var(--sub);border-radius:12px}.feature-quad strong{display:block;color:var(--title);margin-bottom:4px}.feature-quad span{font-size:14px;color:var(--muted)}.security-zone{background:#091E39;color:#E9F3FF}.security-zone h2,.security-zone h3{color:#fff}.security-zone p{color:#c8d9ed}.risk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.risk{padding:20px;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1)}.risk strong{display:block;color:#fff;margin-bottom:5px}.privacy-box{border:1px solid rgba(20,120,242,.24);border-radius:18px;padding:30px;background:#fff}.privacy-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.privacy-tags span{padding:8px 12px;background:var(--soft);border-radius:999px;color:var(--blue);font-size:14px}.brand-statement{padding:82px 0;background:linear-gradient(135deg,#1478F2,#0b62ca);color:#fff}.brand-statement h2{font-size:clamp(34px,5vw,64px);line-height:1.08;margin:0 0 24px;max-width:900px}.brand-statement p{max-width:930px;font-size:18px;color:#edf6ff}
.inner-hero{padding:58px 0 34px;background:linear-gradient(180deg,#fff,#f8fbff)}.inner-hero .kicker{color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.12em}.inner-hero h1{font-size:clamp(38px,5vw,62px);line-height:1.05;color:var(--title);margin:10px 0 18px}.inner-hero p{max-width:780px;font-size:18px;color:var(--muted);margin:0}.horizontal-index{display:flex;gap:8px;overflow-x:auto;padding:14px 0;scrollbar-width:none}.horizontal-index::-webkit-scrollbar{display:none}.horizontal-index a{flex:0 0 auto;padding:8px 12px;border-radius:999px;background:var(--soft);color:var(--blue);font-size:13px;font-weight:700}.prose{max-width:900px}.prose h2{color:var(--title);font-size:30px;margin:42px 0 12px}.prose h3{color:var(--title);font-size:21px;margin:26px 0 8px}.prose p{font-size:17px;color:var(--text)}.prose ul{padding-left:22px}.prose li{margin:8px 0}.split{display:grid;grid-template-columns:1fr 1fr;gap:26px}.step-list{display:grid;gap:12px;counter-reset:step}.step{padding:20px 20px 20px 72px;border:1px solid var(--nline);border-radius:14px;position:relative;background:#fff}.step:before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;left:20px;top:20px;color:var(--blue);font-weight:900;font-size:18px}.step h3{margin:0 0 6px;color:var(--title)}.step p{margin:0;color:var(--muted)}.chapter-grid{display:grid;grid-template-columns:250px 1fr;gap:34px}.chapter-nav{position:sticky;top:94px;align-self:start;padding:18px;background:var(--sub);border-radius:14px}.chapter-nav a{display:block;padding:9px 10px;border-radius:8px;color:var(--muted)}.chapter-nav a:hover{background:#fff;color:var(--blue)}.chapter-content section{padding:0 0 34px;border-bottom:1px solid var(--nline);margin-bottom:34px}.chapter-content h2{color:var(--title);font-size:30px}.help-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.help-card{padding:22px;background:#fff;border:1px solid var(--nline);border-radius:14px}.help-card h2{font-size:18px;margin:0 0 8px;color:var(--title)}.help-card p{font-size:14px;color:var(--muted);margin:0 0 10px}.faq-list{display:grid;gap:10px}.faq-list details{background:#fff;border:1px solid var(--nline);border-radius:12px;padding:0 18px}.faq-list summary{list-style:none;cursor:pointer;padding:18px 34px 18px 0;color:var(--title);font-weight:800;position:relative}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";position:absolute;right:0;top:17px;color:var(--blue);font-size:22px}.faq-list details[open] summary:after{content:"−"}.faq-list p{margin:0;padding:0 0 18px;color:var(--muted)}.contact-paths{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.contact-path{padding:24px;border:1px solid var(--nline);border-radius:16px;background:#fff}.contact-path h2{font-size:20px;color:var(--title);margin-top:0}.contact-path p{color:var(--muted)}
.overlay{position:fixed;inset:0;background:rgba(9,30,57,.32);z-index:180;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.explore-panel,.search-panel{position:fixed;left:0;right:0;top:var(--header);z-index:190;background:#fff;box-shadow:0 30px 70px rgba(9,30,57,.16);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-12px);transition:opacity .2s,transform .2s,visibility .2s;max-height:calc(85vh - var(--header));overflow:auto}.explore-panel.is-open,.search-panel.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:none}.panel-head{height:68px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;border-bottom:1px solid var(--nline)}.panel-head .panel-brand{justify-self:start}.panel-head>strong{color:var(--title)}.panel-close{justify-self:end;border:0;background:var(--soft);color:var(--blue);min-height:42px;padding:0 15px;border-radius:10px;font-weight:700}.explore-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;padding-top:28px;padding-bottom:34px}.explore-grid section h2{font-size:14px;color:var(--blue);margin:0 0 10px}.explore-grid section a{display:block;padding:11px 0;border-top:1px solid var(--nline)}.explore-grid strong{display:block;color:var(--title);font-size:15px}.explore-grid span{display:block;color:var(--muted);font-size:12px;line-height:1.55;margin-top:3px}.search-shell{padding-top:22px;padding-bottom:30px}.search-top{display:flex;align-items:center;justify-content:space-between}.search-top label{font-size:18px;font-weight:900;color:var(--title)}.search-box{margin:18px 0;display:flex;align-items:center;gap:12px;border:1px solid var(--line);background:var(--sub);border-radius:14px;padding:0 16px;color:var(--blue)}.search-box input{width:100%;height:54px;border:0;background:transparent;color:var(--title)}.preset-words{display:flex;flex-wrap:wrap;gap:8px}.preset-words button{border:0;background:var(--soft);color:var(--blue);padding:8px 12px;border-radius:999px}.search-index{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:20px}.search-index a{padding:14px;border:1px solid var(--nline);border-radius:12px}.search-index strong{display:block;color:var(--title)}.search-index span{display:block;color:var(--muted);font-size:12px;margin-top:3px}.search-empty{color:var(--muted)}
.site-footer{background:#091E39;color:#E9F3FF;padding:58px 0 30px}.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:34px}.footer-brand img{max-height:46px;width:auto;margin-bottom:16px}.footer-brand h2{font-size:26px;margin:0;color:#fff}.footer-en{font-size:11px;letter-spacing:.18em;color:#a9c6e8!important}.footer-brand p{color:#bed0e5}.footer-grid nav h2{font-size:14px;color:#fff;margin:0 0 12px}.footer-grid nav a{display:block;color:#c7d9eb;padding:5px 0;font-size:14px}.footer-grid nav a:hover{color:#fff}.footer-note{border-top:1px solid rgba(255,255,255,.1);margin-top:34px;padding-top:22px;display:flex;justify-content:space-between;gap:30px;color:#9fb8d4;font-size:13px}.footer-note p{margin:0;max-width:830px}
@media(max-width:1100px){.desktop-nav a,.header-link{padding:0 8px;font-size:14px}.hero-grid{grid-template-columns:1fr 1.6fr}.hero-right{grid-column:1/-1;display:grid;grid-template-columns:repeat(4,1fr);border-left:0;border-top:1px solid var(--nline)}.discover-item{padding:18px;border-bottom:0;border-right:1px solid var(--nline)}.discover-item:last-child{border-right:0}.number-list{grid-template-columns:repeat(2,1fr)}.magazine-grid{grid-template-columns:1.2fr 1fr}.magazine-card.wide{grid-column:auto}.plan-board{grid-template-columns:repeat(2,1fr)}.catalog-grid{grid-template-columns:repeat(3,1fr)}.catalog-card:nth-child(3n+1){grid-row:auto;min-height:230px}.folder-grid{grid-template-columns:repeat(2,1fr)}.principles{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:2fr repeat(2,1fr)}.footer-grid nav:nth-last-child(-n+2){margin-top:8px}.explore-grid{grid-template-columns:repeat(3,1fr)}.search-index{grid-template-columns:repeat(2,1fr)}}
@media(max-width:860px){:root{--header:64px}.desktop-only{display:none!important}.mobile-only{display:flex}.wrap{width:min(100% - 30px,var(--max))}.topbar{height:var(--header);display:grid;grid-template-columns:52px 1fr 52px;gap:4px}.mobile-head-side{justify-content:flex-start}.brand{justify-content:center;min-width:0}.brand img{max-height:42px;max-width:190px;object-fit:contain}.brand-fallback{padding:7px 10px;align-items:center;max-width:180px}.brand-fallback strong{font-size:16px}.header-actions{margin:0;justify-content:flex-end}.header-actions .search-button{width:44px}.hero-explore{padding-top:26px}.hero-grid{display:flex;flex-direction:column}.hero-left{padding:8px 0 0}.hero-left h1{font-size:42px}.hero-center{min-height:340px;order:2}.hero-right{order:3;display:grid;grid-template-columns:1fr}.discover-item{border-right:0;border-bottom:1px solid var(--nline);padding-left:0}.mini-index{display:none}.number-list,.magazine-grid,.plan-board,.principles,.risk-grid,.article-index,.help-grid{grid-template-columns:1fr}.magazine-card.large{grid-row:auto;min-height:300px}.masonry-text{columns:1}.catalog-grid{grid-template-columns:repeat(2,1fr)}.feature-item{grid-template-columns:1fr;gap:8px}.folder-grid,.notice-board,.contact-paths{grid-template-columns:1fr}.story-grid,.app-showcase,.split,.chapter-grid{grid-template-columns:1fr}.chapter-nav{position:static;display:flex;overflow-x:auto;white-space:nowrap}.chapter-nav a{flex:0 0 auto}.qa-item{grid-template-columns:1fr;gap:10px}.app-copy h1{font-size:40px}.app-visual{min-height:420px;order:2}.explore-panel,.search-panel{top:0;bottom:calc(58px + env(safe-area-inset-bottom));max-height:none;transform:translateY(-8px)}.panel-head{height:64px;grid-template-columns:1fr auto 1fr}.panel-brand{max-width:120px}.panel-brand img{max-height:38px}.panel-brand .brand-fallback{max-width:118px}.explore-grid{grid-template-columns:1fr;padding-top:10px;gap:10px}.explore-grid section{padding:10px 0}.explore-grid section h2{font-size:15px}.search-shell{padding-top:18px}.search-index{grid-template-columns:1fr}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:170;height:calc(58px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:rgba(255,255,255,.97);border-top:1px solid var(--nline);display:grid;grid-template-columns:repeat(5,1fr)}.mobile-bottom a{min-width:0;min-height:48px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:11px;color:var(--muted);gap:1px}.mobile-bottom a span{font-size:17px;line-height:1}.mobile-bottom a.is-current{color:var(--blue);font-weight:800}.site-footer{padding-bottom:calc(88px + env(safe-area-inset-bottom))}.footer-grid{grid-template-columns:1fr 1fr;gap:24px}.footer-brand{grid-column:1/-1}.footer-note{flex-direction:column}.section{padding:58px 0}.section-head{align-items:start;flex-direction:column}.inner-hero{padding-top:42px}.content-index a{padding-left:13px;padding-right:13px}}
@media(max-width:560px){.hero-left h1{font-size:36px}.hero-center{min-height:280px;border-radius:18px}.hero-map-copy{left:14px;right:14px;bottom:14px;padding:16px}.number-list,.catalog-grid,.folder-grid,.principles{grid-template-columns:1fr}.timeline:before{left:24px}.timeline-step{grid-template-columns:50px 1fr;gap:14px}.timeline-node{width:50px;height:50px;font-size:12px}.feature-quad{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.notice{grid-template-columns:1fr;gap:6px}.brand-statement{padding:64px 0}.brand-statement p{font-size:16px}.panel-head>strong{font-size:14px}.panel-brand{max-width:104px}.panel-brand .brand-fallback small{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}
.editorial-image{border-radius:20px;overflow:hidden;background:var(--soft);box-shadow:var(--shadow)}.editorial-image img{width:100%;height:auto;object-fit:contain}