:root{--bg:#fff;--bg2:#f7faff;--bluebg:#edf5ff;--gray:#f5f6f8;--title:#172033;--text:#3e4859;--muted:#6f7a89;--light:#98a1af;--blue:#1478f2;--bright:#2f8cff;--deep:#075dc9;--dark:#084a9c;--pale:#d9eafe;--border:rgba(20,120,242,.12);--grayborder:rgba(30,50,70,.08);--shadow:0 14px 38px rgba(21,67,118,.08);--blueshadow:0 16px 42px rgba(20,120,242,.15);--radius:18px;--shell:min(1280px,calc(100% - 36px))}*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{color:inherit}img{display:block;max-width:100%;height:auto}.shell{width:var(--shell);margin:0 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:-60px;z-index:500;background:#fff;color:var(--blue);padding:10px 14px;border-radius:10px;box-shadow:var(--shadow)}.skip-link:focus{top:10px}.site-header{position:sticky;top:0;z-index:120;background:rgba(255,255,255,.97);backdrop-filter:saturate(150%) blur(14px);border-bottom:1px solid var(--grayborder)}.desktop-nav{height:74px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:24px}.brand,.mobile-brand{display:flex;align-items:center;min-width:0}.brand-logo{max-height:42px;width:auto}.brand-text{font-weight:900;font-size:22px;color:var(--deep);white-space:nowrap}.brand-tag{margin-left:10px;font-size:12px;color:var(--blue);background:var(--bluebg);padding:4px 8px;border-radius:999px;white-space:nowrap}.primary-nav{display:flex;justify-content:center;align-items:center;gap:4px;white-space:nowrap}.primary-nav a,.nav-button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 12px;border-radius:11px;color:#3a4658;font-weight:700;font-size:14px}.primary-nav a:hover,.primary-nav a.is-active,.nav-button:hover,.nav-button.is-active{color:var(--blue);background:var(--bluebg)}.nav-actions{display:flex;align-items:center;gap:6px;white-space:nowrap}.nav-button,.mobile-nav-btn,.close-button,.search-chip{border:1px solid var(--border);background:#fff;cursor:pointer}.mobile-nav{display:none;height:64px;align-items:center;justify-content:space-between;position:relative}.mobile-brand{position:absolute;left:50%;transform:translateX(-50%);max-width:48%}.mobile-nav-btn{min-width:50px;min-height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center}.site-main{min-height:60vh}.section{padding:72px 0}.section-soft{background:var(--bg2)}.section-blue{background:var(--bluebg)}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:800;font-size:13px;letter-spacing:.08em}.eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--blue)}h1,h2,h3{color:var(--title);line-height:1.25;margin-top:0}h1{font-size:clamp(34px,5vw,64px);letter-spacing:-.04em;margin-bottom:18px}h2{font-size:clamp(26px,3vw,38px);letter-spacing:-.02em;margin-bottom:14px}h3{font-size:19px;margin-bottom:10px}p{margin:0 0 1em}.lead{font-size:18px;color:var(--muted);max-width:880px}.muted{color:var(--muted)}.text-link{display:inline-flex;align-items:center;color:var(--blue);font-weight:800}.text-link:after{content:"→";margin-left:6px}.primary-button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:13px;background:linear-gradient(135deg,#3a96ff 0%,#1478f2 55%,#0863d3 100%);color:#fff;font-weight:800;box-shadow:var(--blueshadow)}.secondary-link{display:inline-flex;min-height:44px;align-items:center;color:var(--blue);font-weight:800}.button-row{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.content-card{background:#fff;border:1px solid var(--grayborder);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}.tag{display:inline-flex;align-items:center;background:var(--bluebg);color:var(--deep);border-radius:999px;padding:5px 10px;font-size:12px;font-weight:800;margin:0 6px 6px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}.section-head p{max-width:700px;color:var(--muted)}.page-hero{padding:62px 0 34px;background:linear-gradient(180deg,#f4f9ff,#fff)}.page-hero h1{font-size:clamp(38px,5vw,58px)}
.hero-editorial{padding:54px 0 36px;background:radial-gradient(circle at 50% 5%,rgba(47,140,255,.12),transparent 36%),#fff}.hero-grid{display:grid;grid-template-columns:.86fr 1.35fr .82fr;gap:22px;align-items:stretch}.hero-intro,.hero-side,.hero-banner{border:1px solid var(--grayborder);border-radius:22px;background:#fff;box-shadow:var(--shadow)}.hero-intro{padding:30px}.hero-intro h1{font-size:clamp(34px,4vw,56px)}.hero-intro p{color:var(--muted)}.hero-banner{overflow:hidden;min-height:480px;background:linear-gradient(145deg,#0d6edc,#53a5ff);display:flex;align-items:flex-end}.hero-banner img{width:100%;height:100%;object-fit:cover}.image-fallback{width:100%;min-height:inherit;padding:38px;display:flex;flex-direction:column;justify-content:flex-end;color:#fff;background:linear-gradient(145deg,rgba(255,255,255,.06),rgba(255,255,255,.18))}.image-fallback strong{font-size:clamp(34px,5vw,64px);line-height:1.05}.image-fallback span{margin-top:14px;max-width:560px;opacity:.9}.hero-side{padding:24px;display:flex;flex-direction:column;gap:14px}.quick-entry{padding:15px 0;border-bottom:1px solid var(--grayborder)}.quick-entry:last-child{border-bottom:0}.quick-entry p{font-size:13px;color:var(--muted);margin-bottom:6px}.channel-strip{display:flex;gap:24px;align-items:center;overflow-x:auto;padding:18px 0;scrollbar-width:none}.channel-strip::-webkit-scrollbar{display:none}.channel-strip a{flex:0 0 auto;font-weight:800;color:var(--muted);white-space:nowrap}.channel-strip a:before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--pale);margin-right:8px}.channel-strip a:hover{color:var(--blue)}.overview-grid{display:grid;grid-template-columns:1.2fr .9fr 1.05fr .85fr;gap:16px}.discussion-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:22px}.discussion-main{padding:34px;background:linear-gradient(145deg,#eaf4ff,#fff);border:1px solid var(--border);border-radius:22px}.discussion-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}.discussion-list article{padding:20px;border:1px solid var(--grayborder);border-radius:16px;background:#fff}.city-map{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:16px}.city-map article:first-child{grid-row:span 2;background:var(--bluebg)}.life-grid{columns:3 260px;column-gap:16px}.life-grid article{break-inside:avoid;margin-bottom:16px}.route-list{display:grid;grid-template-columns:repeat(6,1fr);overflow-x:auto;padding-bottom:8px}.route-step{min-width:220px;padding:24px;border-top:2px solid var(--pale);position:relative}.route-step:before{content:"";position:absolute;left:24px;top:-7px;width:12px;height:12px;border-radius:50%;background:var(--blue)}.interest-cloud{display:flex;flex-wrap:wrap;gap:12px}.interest-pill{flex:1 1 220px;min-height:150px;padding:22px;border:1px solid var(--border);border-radius:18px;background:#fff}.qa-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}.qa-list article{padding:24px;border-left:3px solid var(--blue);background:var(--bg2);border-radius:0 16px 16px 0}.story-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:22px}.story-main{padding:36px;border-radius:22px;background:#f8fbff;border:1px solid var(--border)}.story-side{display:grid;gap:14px}.discover-wall{columns:4 230px;column-gap:16px}.discover-wall article{break-inside:avoid;margin:0 0 16px;padding:22px;border-radius:18px;border:1px solid var(--grayborder);background:#fff}.discover-wall article:nth-child(3n+1){background:var(--bluebg)}.guide-grid,.principle-grid,.faq-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.guide-grid article,.principle-grid article{padding:24px;border:1px solid var(--grayborder);border-radius:18px;background:#fff}.app-block{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center}.app-visual{min-height:460px;border-radius:28px;background:linear-gradient(145deg,#0d6edc,#4fa1ff);display:flex;align-items:center;justify-content:center;padding:30px;overflow:hidden}.app-visual img{max-height:520px;object-fit:contain}.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:24px}.service-grid article{padding:18px;background:var(--bluebg);border-radius:16px}.safety-pair{display:grid;grid-template-columns:1fr 1fr;gap:26px}.safety-pair article{padding:36px;border-radius:24px;border:1px solid var(--border);background:#fff}.safety-pair article:nth-child(2){margin-top:50px;background:var(--bluebg)}.brand-statement{padding:56px;border-radius:28px;background:linear-gradient(145deg,#0a65cf,#2f8cff);color:#fff}.brand-statement h2{color:#fff}.brand-statement p{max-width:960px;font-size:17px;opacity:.95}
.topic-directory{display:grid;grid-template-columns:.8fr 1.2fr;gap:26px}.topic-index{position:sticky;top:100px;align-self:start}.topic-index a{display:block;padding:10px 12px;border-radius:10px;color:var(--muted)}.topic-index a:hover{background:var(--bluebg);color:var(--blue)}.topic-stream{display:grid;gap:18px}.topic-stream article{padding:28px;border-bottom:1px solid var(--grayborder)}.city-horizontal{display:grid;gap:14px}.city-horizontal article{display:grid;grid-template-columns:180px 1fr auto;gap:22px;align-items:start;padding:22px 0;border-bottom:1px solid var(--grayborder)}.magazine-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}.magazine-grid .feature{grid-row:span 2}.notebook{display:grid;grid-template-columns:180px 1fr;gap:20px}.notebook .rail{border-right:2px solid var(--pale);padding-right:20px}.notebook .rail span{display:block;margin-bottom:16px;color:var(--blue);font-weight:800}.tag-wall{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}.tag-wall span{padding:10px 16px;border-radius:999px;background:var(--bluebg);color:var(--deep);font-weight:800}.article-list{display:grid;gap:22px}.article-list article{padding:0 0 24px;border-bottom:1px solid var(--grayborder)}.topic-cards,.knowledge-index,.risk-grid,.privacy-grid,.rule-grid,.help-grid,.contact-paths{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.topic-cards article,.knowledge-index article,.risk-grid article,.privacy-grid article,.rule-grid article,.help-grid article,.contact-paths article{padding:25px;border-radius:18px;border:1px solid var(--grayborder);background:#fff}.topic-cards article{background:var(--bg2)}.risk-grid article:nth-child(odd),.privacy-grid article:nth-child(even){background:var(--bluebg)}.process-steps{counter-reset:step;display:grid;gap:14px;margin-top:28px}.process-steps article{position:relative;padding:18px 20px 18px 66px;border:1px solid var(--grayborder);border-radius:16px;background:#fff}.process-steps article:before{counter-increment:step;content:counter(step);position:absolute;left:18px;top:18px;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:var(--blue);color:#fff;font-weight:900}.notice-list article{display:grid;grid-template-columns:130px 1fr;gap:24px;padding:24px 0;border-bottom:1px solid var(--grayborder)}.notice-list strong{color:var(--blue)}details{border:1px solid var(--grayborder);border-radius:14px;padding:0 20px;background:#fff}details+details{margin-top:12px}summary{cursor:pointer;font-weight:800;color:var(--title);padding:18px 0}details p{padding:0 0 18px;color:var(--muted)}.about-values{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.about-values article{padding:24px;background:#fff;border:1px solid var(--grayborder);border-radius:18px}.content-note{display:block;margin-top:12px;padding:14px 16px;border-radius:14px;background:var(--bluebg);color:var(--deep)}
.site-footer{background:#0b1f38;color:#eaf3ff;padding:58px 0 calc(26px + env(safe-area-inset-bottom));margin-top:40px}.footer-grid{display:grid;grid-template-columns:1.1fr 2fr;gap:50px}.footer-logo-wrap{display:flex;align-items:center;gap:12px}.footer-logo{max-height:42px;width:auto}.footer-logo-wrap strong{display:block;color:#fff;font-size:21px}.footer-logo-wrap small{display:block;letter-spacing:.14em;color:#b9d4f1}.footer-brand p{color:#bed0e3;margin-top:18px}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.footer-links h2{font-size:14px;color:#fff;margin-bottom:12px}.footer-links a{display:block;color:#bdd1e5;padding:5px 0;font-size:14px}.footer-links a:hover{color:#fff}.footer-note{border-top:1px solid rgba(255,255,255,.1);margin-top:34px;padding-top:24px;color:#9fb6ce;font-size:13px;display:flex;justify-content:space-between;gap:28px}.overlay{position:fixed;inset:74px 0 0;z-index:180;background:rgba(5,24,48,.34);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.channel-menu,.search-panel{position:fixed;left:0;right:0;top:74px;z-index:200;background:#fff;box-shadow:0 22px 50px rgba(11,31,56,.16);visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-12px);transition:.22s ease;max-height:calc(100vh - 74px);overflow:auto}.channel-menu.is-open,.search-panel.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.panel-open{overflow:hidden}.panel-head{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-top:20px;padding-bottom:18px}.panel-head strong{color:var(--title);font-size:20px}.panel-head span{display:block;color:var(--muted);font-size:13px}.close-button{min-height:44px;border-radius:12px;padding:0 13px}.channel-columns{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-bottom:34px}.channel-columns h2{font-size:14px;color:var(--blue);margin-bottom:12px}.channel-columns a{display:block;padding:12px;border-radius:12px}.channel-columns a:hover{background:var(--bluebg)}.channel-columns a strong{display:block;color:var(--title);margin-bottom:3px}.channel-columns a span{display:block;font-size:13px;color:var(--muted);line-height:1.55}.search-inner{padding-bottom:34px}.search-box{display:block}.search-box input{width:100%;height:58px;border:1px solid var(--border);border-radius:16px;padding:0 18px;outline:none;background:var(--bg2);color:var(--title)}.search-groups{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:24px 0}.search-groups h2{font-size:14px}.search-chip{min-height:38px;border-radius:999px;padding:0 12px;margin:0 8px 8px 0}.search-results{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.search-results a{padding:16px;border:1px solid var(--grayborder);border-radius:14px}.search-results a:hover{background:var(--bluebg)}.search-results strong{display:block;color:var(--title)}.search-results span{font-size:13px;color:var(--muted)}.mobile-bottom-nav{display:none}.close-button:focus-visible,.nav-button:focus-visible,.mobile-nav-btn:focus-visible,.search-chip:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid rgba(20,120,242,.28);outline-offset:3px}
@media(max-width:1100px){.brand-tag{display:none}.desktop-nav{gap:12px}.primary-nav a,.nav-button{padding:0 8px;font-size:13px}.hero-grid{grid-template-columns:1fr 1.2fr}.hero-side{grid-column:1/-1;display:grid;grid-template-columns:repeat(4,1fr)}.overview-grid{grid-template-columns:1fr 1fr}.city-map{grid-template-columns:1fr 1fr}.city-map article:first-child{grid-row:auto;grid-column:1/-1}.guide-grid,.principle-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr}.about-values{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){:root{--shell:min(100% - 30px,1280px)}.desktop-nav{display:none}.mobile-nav{display:flex}.section{padding:52px 0}.hero-editorial{padding-top:30px}.hero-grid{display:flex;flex-direction:column}.hero-intro{order:1}.hero-banner{order:2;min-height:330px}.hero-side{order:3;display:grid;grid-template-columns:1fr 1fr}.overview-grid,.discussion-layout,.story-layout,.safety-pair,.app-block,.magazine-grid,.topic-directory,.notebook{grid-template-columns:1fr}.discussion-list,.qa-list,.topic-cards,.knowledge-index,.risk-grid,.privacy-grid,.rule-grid,.help-grid,.contact-paths{grid-template-columns:1fr}.city-map{grid-template-columns:1fr}.city-map article:first-child{grid-column:auto}.life-grid,.discover-wall{columns:2 220px}.guide-grid,.principle-grid,.faq-grid{grid-template-columns:1fr 1fr}.service-grid{grid-template-columns:1fr 1fr}.safety-pair article:nth-child(2){margin-top:0}.topic-index{position:static;display:flex;gap:8px;overflow:auto;padding-bottom:8px}.topic-index a{flex:0 0 auto;background:var(--bg2)}.city-horizontal article{grid-template-columns:120px 1fr}.city-horizontal article .text-link{grid-column:2}.notice-list article{grid-template-columns:1fr;gap:6px}.footer-links{grid-template-columns:1fr 1fr}.footer-note{flex-direction:column}.channel-menu,.search-panel{top:0;bottom:0;left:auto;width:min(92vw,430px);max-height:none;transform:translateX(100%)}.search-panel{width:100vw}.channel-menu.is-open,.search-panel.is-open{transform:none}.overlay{inset:0}.channel-columns{grid-template-columns:1fr;padding:0 18px 28px}.panel-head.shell,.search-inner.shell{width:100%;padding-left:18px;padding-right:18px}.search-groups,.search-results{grid-template-columns:1fr}.mobile-bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:100;display:grid;grid-template-columns:repeat(5,1fr);background:rgba(255,255,255,.97);border-top:1px solid var(--grayborder);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom-nav a{min-height:56px;display:grid;place-items:center;color:var(--muted);font-size:13px;font-weight:800}.mobile-bottom-nav a.is-active{color:var(--blue)}.site-footer{padding-bottom:calc(90px + env(safe-area-inset-bottom))}}
@media(max-width:560px){h1{font-size:36px}.hero-intro{padding:22px}.hero-side{grid-template-columns:1fr}.hero-banner{min-height:280px}.overview-grid,.guide-grid,.principle-grid,.faq-grid,.service-grid,.about-values{grid-template-columns:1fr}.life-grid,.discover-wall{columns:1}.route-list{margin-right:-15px}.section-head{align-items:start;flex-direction:column}.city-horizontal article{grid-template-columns:1fr}.city-horizontal article .text-link{grid-column:auto}.brand-statement{padding:34px 24px}.app-visual{min-height:340px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
/* shared page refinements */
.section-block{padding:72px 0}.soft-section{background:var(--bg2)}.compact-hero p{max-width:900px;color:var(--muted);font-size:17px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px}.section-heading h2{margin-bottom:0}.blue-tint{background:var(--bluebg);border-color:var(--border)}.inline-links{display:flex;gap:20px;flex-wrap:wrap;align-items:center}.faq-list{max-width:980px}.visual-fallback{width:100%;min-height:380px;border-radius:22px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:28px;color:#fff;background:linear-gradient(145deg,rgba(255,255,255,.08),rgba(255,255,255,.18))}.visual-fallback span{font-weight:800;letter-spacing:.08em}.visual-fallback strong{font-size:30px;margin:8px 0}.visual-fallback small{opacity:.86}.process-steps>article>span{display:none}.content-card.blue-tint{box-shadow:none}
@media(max-width:820px){.section-block{padding:52px 0}.section-heading{align-items:start;flex-direction:column}.compact-hero{padding-top:42px}.faq-list{max-width:none}}