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@media(max-width:680px){.wrap{padding:0 18px}.navlinks{display:none}.hero{padding:58px 0 64px}.hero h1{font-size:51px}.hero p{font-size:16px}.grid-5,.map,.library-grid{grid-template-columns:1fr}.feature-grid{grid-template-columns:1fr}.section{padding:62px 0}.section-head{display:block}.section-intro{margin-top:14px}.method-row{grid-template-columns:1fr;gap:8px}.panel-title{font-size:50px}.article-body p{font-size:15px}.article-hero h1{font-size:43px}footer{display:block}.footnote{text-align:left;margin-top:12px}}
/* Public profile, grouped reading, and service pages. Kept as source assets. */
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
.hero{align-items:center}.hero h1{font-size:clamp(44px,5.9vw,74px);line-height:1.14;letter-spacing:-.045em}
.hero-lede{font-size:17px;color:var(--muted);max-width:700px;margin:0 0 20px;line-height:1.9}
.keyword-line{margin-top:24px;color:var(--muted);font-size:12px;line-height:1.9}.keyword-line b{color:var(--cyan);margin-right:7px;font-weight:700}
.hero-panel{min-height:350px}.panel-content{min-height:296px}.panel-title{font-size:60px;letter-spacing:-.035em}.panel-title small{max-width:300px;line-height:1.9}
.fact-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.fact{border:1px solid var(--line);border-radius:16px;padding:22px;background:rgba(13,35,61,.72);min-height:165px}
.fact b{display:block;font-size:24px;color:var(--lime);letter-spacing:-.035em;margin-bottom:12px}.fact span{display:block;color:var(--ink);font-size:14px;line-height:1.8}.fact small{display:block;color:var(--muted);font-size:11px;margin-top:16px;line-height:1.6}
.topic-card{min-height:212px}.topic-card b{display:block;font-size:19px;line-height:1.4;margin:22px 0 10px}.topic-card span:not(.tag){display:block;color:var(--muted);font-size:13px;line-height:1.8}.topic-card i{display:block;color:var(--lime);font-size:12px;font-style:normal;margin-top:18px}
.question-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.question{border:1px solid var(--line);border-radius:14px;background:rgba(12,31,53,.7);padding:18px 20px;align-self:start}
.question summary{cursor:pointer;color:var(--ink);font-size:15px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:14px}.question summary::-webkit-details-marker{display:none}.question summary:after{content:'+';color:var(--cyan);font-size:20px;line-height:1.3;flex-shrink:0}.question[open] summary:after{content:'−';color:var(--lime)}.question p{color:var(--muted);font-size:14px;line-height:1.9;margin:15px 0 0}
.text-link{display:inline-block;color:var(--cyan);font-size:14px;margin-top:22px}.text-link:hover{color:var(--lime)}
.compact-list{display:grid;gap:10px}.compact-row{display:grid;grid-template-columns:116px minmax(0,1fr) 72px;gap:18px;align-items:center;border:1px solid var(--line);border-radius:14px;padding:20px;background:rgba(11,30,51,.62);transition:border-color .2s,background .2s}.compact-row:hover{border-color:rgba(88,221,255,.45);background:rgba(15,41,70,.8)}
.row-tag{color:var(--cyan);font:11px ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.05em}.row-main b{display:block;font-size:16px;line-height:1.5}.row-main small{display:block;color:var(--muted);font-size:13px;line-height:1.8;margin-top:7px}.row-meta{color:var(--muted);font-size:12px;text-align:right;line-height:1.8}.row-meta i{color:var(--lime);font-style:normal}
.service-cta{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:36px;border:1px solid rgba(88,221,255,.3);border-radius:20px;background:linear-gradient(135deg,rgba(88,221,255,.1),rgba(200,243,106,.06))}.service-cta h2{font-size:30px;line-height:1.4;margin:10px 0 14px}.service-cta p{color:var(--muted);font-size:15px;line-height:1.9;max-width:710px;margin:0}.service-cta>.btn{flex-shrink:0}
.service-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.service-card{border:1px solid var(--line);border-radius:18px;padding:28px;background:rgba(12,32,54,.72)}.service-card .tag{font-size:11px;letter-spacing:.12em;color:var(--cyan)}.service-card h2{font-size:23px;line-height:1.4;margin:20px 0 14px}.service-card p{font-size:15px;line-height:1.9;color:var(--muted);margin:0}
.about-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:26px}.about-layout .fact-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.about-layout>.side-card{height:max-content}.about-layout h2{font-size:30px;margin:34px 0 22px}
.term-list{display:flex;gap:8px;flex-wrap:wrap}.term-list span{border:1px solid var(--line);border-radius:999px;padding:7px 10px;background:rgba(255,255,255,.03);color:var(--muted);font-size:12px}
.answer-block{border:1px solid rgba(88,221,255,.28);border-radius:16px;padding:22px 24px;background:rgba(88,221,255,.06);color:var(--ink);font-size:16px;line-height:1.9;margin-top:26px}.answer-block b{color:var(--cyan)}.answer-block.strong{padding:24px 26px;margin:0 0 28px}.answer-block.strong p{font-size:18px;line-height:1.9;margin:12px 0;color:var(--ink)}.answer-block small{display:block;color:var(--muted);font-size:12px;line-height:1.9}
.group-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin:48px 0 20px}.group-head h2{font-size:28px;margin:10px 0 0}.group-head p{color:var(--muted);font-size:13px;line-height:1.8;max-width:460px;text-align:right;margin:0}.group-head p span{color:var(--cyan)}.knowledge-group:first-child .group-head{margin-top:30px}
.page-hero{padding-bottom:40px}.page-hero h1{max-width:940px;line-height:1.2;letter-spacing:-.035em}.article-hero{padding-bottom:30px}.article-hero h1{max-width:1000px;line-height:1.22;letter-spacing:-.035em}.article-body .faq-list{margin-top:36px}.article-body .faq-list>.kicker{margin-bottom:14px}.article-body .faq-list .question{margin-top:10px}.article-side .notice{font-size:12px;line-height:1.9}.insight>.kicker{display:block;margin-bottom:12px}
.topic-layout{grid-template-columns:320px minmax(0,1fr)}.topic-layout .compact-row{grid-template-columns:minmax(0,1fr) 70px}.topic-layout .compact-row .row-tag{grid-column:1/-1}.topic-layout .method-row{grid-template-columns:125px minmax(0,1fr)}
.btn:focus-visible,a:focus-visible,summary:focus-visible,button:focus-visible{outline:2px solid var(--cyan);outline-offset:5px}.search{min-width:0}.section h2,.hero h1,.page-hero h1,.article-hero h1{overflow-wrap:break-word}.compact-row[hidden],.knowledge-group[hidden]{display:none!important}.search-empty{padding:24px;color:var(--muted);border:1px dashed var(--line);border-radius:14px;margin-top:24px}.search-empty[hidden]{display:none}
@media(max-width:980px){.fact-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.about-layout{grid-template-columns:1fr}.question-grid{grid-template-columns:1fr}.topic-layout{grid-template-columns:1fr}.topic-layout .compact-row{grid-template-columns:116px minmax(0,1fr) 72px}.topic-layout .compact-row .row-tag{grid-column:auto}.article-side{order:initial}.article-side .term-list{margin-bottom:12px}.hero-panel{min-height:300px}.panel-content{min-height:246px}}
@media(max-width:680px){.nav{height:auto;min-height:76px;display:flex;flex-wrap:wrap;gap:14px;padding:18px 0}.nav .brand{font-size:15px}.nav .nav-cta{margin-left:auto}.navlinks{display:flex;order:3;width:100%;gap:22px;padding-bottom:2px;overflow-x:auto;white-space:nowrap;font-size:12px}.hero h1{font-size:44px}.hero-panel{min-height:280px}.panel-content{min-height:226px}.hero-lede{font-size:16px}.fact-grid,.about-layout .fact-grid{grid-template-columns:1fr}.fact{min-height:0;padding:20px}.service-grid{grid-template-columns:1fr}.compact-row,.topic-layout .compact-row{grid-template-columns:1fr;gap:8px}.row-meta{text-align:left;display:flex;gap:12px;align-items:center}.row-meta br{display:none}.row-main b{font-size:16px}.group-head{display:block}.group-head p{text-align:left;margin-top:14px}.service-cta{display:block;padding:24px}.service-cta .btn{margin-top:22px}.service-cta h2{font-size:26px}.question summary{font-size:14px}.answer-block.strong p{font-size:16px}.article-hero h1{font-size:38px}.page-hero h1{font-size:38px}.section h2{font-size:32px}.service-card h2{font-size:23px}.group-head h2{font-size:27px}.article-layout,.topic-layout,.about-layout{gap:22px}.article-meta-row{align-items:flex-start}.badge{max-width:100%;overflow-wrap:anywhere}.service-card{padding:24px}.hero{gap:30px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

.footer-registration{flex-basis:100%;width:100%;margin-top:12px;padding-top:22px;border-top:1px solid var(--line);text-align:center;color:var(--muted);font-size:12px;line-height:1.9}.footer-registration p{margin:0}.footer-registration .footer-owner{margin-bottom:8px}.footer-filings{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:10px 24px}.footer-filings a{display:inline-flex;align-items:center;gap:6px}.footer-registration a:hover{color:var(--cyan);text-decoration:underline}