*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;color:#3C495D;background:#fff;line-height:1.72;overflow-x:hidden}body.panel-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{max-width:100%;height:auto;display:block}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:#17243A;line-height:1.25}h1{font-size:clamp(2.25rem,5vw,5rem);letter-spacing:-.045em}h2{font-size:clamp(1.55rem,3vw,2.75rem)}h3{font-size:1.08rem}p{margin-bottom:1em}.site-header{position:fixed;inset:0 0 auto 0;height:72px;background:rgba(255,255,255,.96);border-bottom:1px solid rgba(20,40,70,.08);z-index:100;backdrop-filter:blur(14px)}.nav-shell{height:72px;max-width:1320px;margin:auto;padding:0 24px;display:flex;align-items:center;gap:20px}.brand{display:flex;align-items:center;min-width:max-content}.brand-logo{max-height:44px;width:auto}.brand-fallback{display:flex;align-items:baseline;gap:9px;color:#1478F2}.brand-fallback strong{font-size:20px}.brand-fallback small{font-size:9px;letter-spacing:.12em;color:#6E7988}.desktop-nav{display:flex;align-items:stretch;gap:2px;flex:1;white-space:nowrap}.desktop-nav a,.text-action{min-height:44px;display:flex;align-items:center;padding:0 12px;border-radius:10px;font-size:14px;color:#3C495D;position:relative}.desktop-nav a:hover,.text-action:hover{background:#EDF5FF;color:#1478F2}.desktop-nav a.is-current{color:#1478F2;font-weight:700}.desktop-nav a.is-current:after{content:"";position:absolute;bottom:5px;left:50%;width:5px;height:5px;background:#1478F2;border-radius:50%;transform:translateX(-50%)}.nav-actions{display:flex;align-items:center;gap:5px}.icon-button{width:44px;height:44px;border:0;border-radius:12px;background:transparent;color:#17243A;display:grid;place-items:center;font-size:27px}.icon-button:hover,.icon-button:focus-visible{background:#EDF5FF;outline:none}.search-icon{width:18px;height:18px;border:2px solid currentColor;border-radius:50%;position:relative;display: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{width:19px;height:19px;background:radial-gradient(circle,currentColor 2px,transparent 2.5px) 0 0/9px 9px}.mobile-only{display:none}main{padding-top:72px}.section,.page-shell{max-width:1320px;margin:0 auto;padding:88px 24px}.section-tight{padding-top:54px;padding-bottom:54px}.eyebrow{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:#1478F2;font-weight:800}.lead{font-size:clamp(1.08rem,2vw,1.28rem);color:#6E7988;max-width:780px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 19px;border-radius:12px;background:linear-gradient(135deg,#43A0FF 0%,#1478F2 56%,#0964CE 100%);color:#fff;font-weight:700;box-shadow:0 16px 44px rgba(20,120,242,.14)}.btn:hover{filter:brightness(.97);transform:translateY(-1px)}.text-link{color:#1478F2;font-weight:700;display:inline-flex;gap:6px;align-items:center}.text-link:after{content:"→"}.soft{background:#F7FAFE}.blue-soft{background:#EDF5FF}.blue-deep{background:#091E39;color:#E9F3FF}.blue-deep h1,.blue-deep h2,.blue-deep h3{color:#fff}.card{background:#fff;border:1px solid rgba(20,120,242,.12);border-radius:16px;padding:24px;box-shadow:0 14px 38px rgba(35,72,118,.08)}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:34px}.section-head p{max-width:650px;color:#6E7988}.pill{display:inline-flex;padding:6px 10px;border-radius:999px;background:#EDF5FF;color:#0765D4;font-size:12px;font-weight:700}.number{font-size:2.3rem;color:#1478F2;font-weight:800;letter-spacing:-.04em}.overlay{position:fixed;inset:72px 0 0;background:rgba(9,30,57,.44);z-index:140;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.explore-panel,.search-panel{position:fixed;left:0;right:0;top:72px;background:#fff;z-index:150;max-height:85vh;overflow:auto;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-12px);transition:.22s}.explore-panel.is-open,.search-panel.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:none}.panel-head,.search-wrap{max-width:1320px;margin:auto}.panel-head{display:flex;align-items:center;gap:14px;padding:18px 24px;border-bottom:1px solid rgba(20,40,70,.08)}.panel-head>div{display:flex;flex-direction:column;flex:1}.panel-head small{color:#99A2AF}.panel-brand img{max-height:38px}.explore-grid{max-width:1320px;margin:auto;padding:30px 24px 38px;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}.explore-grid section{min-width:0}.explore-grid h2{font-size:13px;color:#6E7988;margin-bottom:12px}.explore-grid a{display:block;padding:11px 10px;border-radius:10px}.explore-grid a:hover{background:#EDF5FF}.explore-grid b{display:block;color:#17243A}.explore-grid span{display:block;color:#6E7988;font-size:12px;line-height:1.55;margin-top:3px}.search-wrap{padding:25px 24px 38px}.search-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.search-top>div{display:flex;flex-direction:column}.search-top span{font-size:13px;color:#99A2AF}.search-box{height:58px;border:1px solid rgba(20,120,242,.18);border-radius:16px;padding:0 18px;display:flex;align-items:center;gap:14px;background:#F7FAFE}.search-box input{flex:1;border:0;outline:0;background:transparent;font-size:16px}.search-layout{display:grid;grid-template-columns:1fr 2fr;gap:34px;margin-top:26px}.search-layout h2{font-size:14px}.keyword-list{display:flex;flex-wrap:wrap;gap:8px}.keyword-list button{border:0;background:#EDF5FF;color:#0765D4;padding:9px 12px;border-radius:999px}.search-results{display:grid;grid-template-columns:1fr 1fr;gap:10px}.search-results a{padding:13px;border:1px solid rgba(20,40,70,.08);border-radius:12px}.search-results a:hover{border-color:rgba(20,120,242,.28);background:#F7FAFE}.search-results b,.search-results span{display:block}.search-results span{font-size:12px;color:#6E7988}.site-footer{background:#091E39;color:#E9F3FF;padding:64px max(24px,calc((100vw - 1320px)/2 + 24px)) 30px}.site-footer h2{color:#fff;font-size:13px}.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:36px}.site-footer a{display:block;color:#c8d9ee;font-size:13px;margin:8px 0}.site-footer a:hover{color:#fff}.footer-brand p{color:#bfd0e5;max-width:480px}.footer-logo{max-height:44px;margin-bottom:20px}.footer-wordmark{display:flex;flex-direction:column;margin-bottom:18px}.footer-wordmark strong{font-size:24px}.footer-wordmark span{font-size:10px;letter-spacing:.14em}.footer-note{border-top:1px solid rgba(255,255,255,.1);border-bottom:1px solid rgba(255,255,255,.1);padding:20px 0;margin-top:34px;color:#bfd0e5;font-size:13px}.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:22px;font-size:12px;color:#94a9c2}.footer-bottom div{display:flex;gap:18px}.footer-bottom a{margin:0}.mobile-bottom-nav{display:none}
/* home */.home-hero{background:linear-gradient(180deg,#F7FAFE,#fff)}.explore-desk{max-width:1320px;margin:auto;padding:56px 24px 50px;display:grid;grid-template-columns:28fr 47fr 25fr;gap:24px;align-items:stretch}.hero-intro,.hero-side{padding:28px 12px}.hero-intro h1{font-size:clamp(2.4rem,4vw,4.4rem)}.hero-links{display:flex;flex-direction:column;gap:10px;margin-top:26px}.hero-cover{border-radius:22px;min-height:520px;overflow:hidden;position:relative;background:radial-gradient(circle at 15% 15%,rgba(255,255,255,.8),transparent 35%),linear-gradient(145deg,#E3F0FF,#1478F2);display:flex;align-items:end;padding:34px}.hero-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#EDF5FF}.cover-fallback{position:relative;color:#fff;max-width:420px}.cover-fallback strong{display:block;font-size:clamp(2rem,4vw,4rem);line-height:1}.cover-fallback span{display:block;margin-top:12px;letter-spacing:.16em}.hero-side h2{font-size:14px;color:#6E7988}.discovery-item{padding:17px 0;border-bottom:1px solid rgba(20,40,70,.08)}.discovery-item h3{margin-bottom:7px}.discovery-item p{font-size:13px;color:#6E7988}.content-index{border-top:1px solid rgba(20,40,70,.08);border-bottom:1px solid rgba(20,40,70,.08);background:#fff}.content-index .inner{max-width:1320px;margin:auto;padding:0 24px;display:flex;gap:30px;overflow-x:auto;scrollbar-width:none}.content-index a{white-space:nowrap;padding:16px 0;font-size:13px}.content-index a:before{content:"";width:5px;height:5px;background:#DCEBFF;border-radius:50%;display:inline-block;margin-right:8px}.editorial-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border-top:1px solid rgba(20,40,70,.08)}.editorial-item{padding:28px;border-bottom:1px solid rgba(20,40,70,.08);display:grid;grid-template-columns:76px 1fr;gap:18px}.editorial-item:nth-child(odd){border-right:1px solid rgba(20,40,70,.08)}.city-mag{display:grid;grid-template-columns:1.55fr .9fr .9fr;grid-template-rows:auto auto;gap:16px}.city-piece{background:#fff;border:1px solid rgba(20,120,242,.12);border-radius:16px;padding:24px;min-height:210px}.city-piece.feature{grid-row:span 2;min-height:440px;background:linear-gradient(155deg,#DCEBFF,#fff);display:flex;flex-direction:column;justify-content:flex-end}.plan-board{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.time-col{background:#fff;border-radius:16px;padding:20px;border-top:4px solid #1478F2}.time-col article+article{border-top:1px solid rgba(20,40,70,.08);padding-top:14px;margin-top:14px}.life-flow{display:grid;grid-template-columns:1.15fr .85fr;gap:28px}.life-flow article{padding:28px 0;border-top:1px solid rgba(20,40,70,.08)}.travel-track{position:relative;display:grid;gap:0}.travel-step{display:grid;grid-template-columns:100px 1fr;gap:25px;padding:26px 0;border-top:1px solid rgba(20,40,70,.08)}.travel-mark{font-weight:900;color:#1478F2;font-size:24px}.tag-wall{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.tag-wall a{padding:12px 18px;background:#fff;border:1px solid rgba(20,120,242,.14);border-radius:999px;color:#17243A;font-weight:700}.tag-wall a:nth-child(3n){font-size:1.35rem;padding:17px 24px}.tag-wall a:nth-child(4n){background:#EDF5FF;color:#0765D4}.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.qa-grid article{padding:26px;border-left:3px solid #1478F2;background:#fff}.story-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:26px}.story-main{padding:36px;background:#17243A;color:#edf5ff;border-radius:18px}.story-main h2{color:#fff}.short-stories{display:grid;gap:10px}.short-stories article{padding:20px;background:#fff;border-bottom:1px solid rgba(20,40,70,.08)}.inspiration-wall{columns:3 270px;column-gap:18px}.inspiration-wall article{break-inside:avoid;background:#fff;border:1px solid rgba(20,40,70,.08);border-radius:16px;padding:22px;margin-bottom:18px}.feature-list{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.feature-list article{padding:28px 22px;border-radius:16px;background:#fff;border:1px solid rgba(20,120,242,.12)}.handbook-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.handbook-list article{padding:24px;background:#fff;border-radius:14px;border-top:3px solid #1478F2}.folder-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.folder{background:#fff;border:1px solid rgba(20,120,242,.12);border-radius:8px 16px 16px 16px;padding:24px;position:relative}.folder:before{content:"";position:absolute;left:-1px;top:-10px;width:82px;height:12px;background:#DCEBFF;border-radius:8px 8px 0 0}.bulletin-list{max-width:900px}.bulletin-list article{display:grid;grid-template-columns:150px 1fr;gap:24px;padding:24px 0;border-bottom:1px solid rgba(20,40,70,.08)}.principle-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.app-showcase{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}.app-visual{min-height:470px;background:linear-gradient(145deg,#E3F0FF,#1478F2);border-radius:28px;padding:34px;display:flex;align-items:center;justify-content:center}.app-visual img{max-height:500px;object-fit:contain}.safety-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.safety-list article{padding:22px;border:1px solid rgba(255,255,255,.12);border-radius:14px;background:rgba(255,255,255,.04)}.privacy-box{border:2px solid rgba(20,120,242,.18);background:#fff;border-radius:18px;padding:34px}.brand-manifesto{background:linear-gradient(130deg,#fff 0%,#EDF5FF 45%,#fff 100%);border-top:1px solid rgba(20,120,242,.12)}
/* inner pages */.page-hero{padding:82px 24px 50px}.page-hero .inner{max-width:1320px;margin:auto;display:grid;grid-template-columns:1.35fr .65fr;gap:50px;align-items:end}.page-hero h1{margin-bottom:18px}.hero-note{border-left:2px solid #1478F2;padding-left:20px;color:#6E7988}.horizontal-index{display:flex;gap:10px;overflow-x:auto;padding:0 0 16px}.horizontal-index a{white-space:nowrap;background:#fff;border:1px solid rgba(20,120,242,.12);border-radius:999px;padding:8px 13px;font-size:13px}.article-prose{max-width:880px}.article-prose h2{margin-top:48px;font-size:1.8rem}.article-prose h3{margin-top:28px}.article-prose p{color:#4a5768}.article-prose ul{padding-left:1.2em}.layout-split{display:grid;grid-template-columns:.75fr 1.25fr;gap:48px}.layout-split aside{position:sticky;top:100px;align-self:start}.mini-index{display:grid;gap:8px}.mini-index a{padding:10px 12px;border-radius:10px;background:#F7FAFE;color:#0765D4}.inner-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.inner-cards article{padding:23px;border:1px solid rgba(20,40,70,.08);border-radius:14px;background:#fff}.timeline{border-left:2px solid #DCEBFF;margin-left:22px;padding-left:34px}.timeline article{position:relative;padding:0 0 30px}.timeline article:before{content:"";position:absolute;left:-41px;top:6px;width:12px;height:12px;border-radius:50%;background:#1478F2;border:4px solid #EDF5FF}.topic-map{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.topic-map article{padding:26px;border-radius:18px;background:#fff;border:1px solid rgba(20,120,242,.12)}.answer-stack{display:grid;gap:18px}.answer-stack article{background:#fff;border:1px solid rgba(20,40,70,.08);border-radius:14px;padding:28px}.answer-stack h2{font-size:1.3rem}.story-mag{max-width:920px;margin:auto}.story-mag .story-lead{font-size:1.25rem;color:#6E7988}.story-mag blockquote{margin:34px 0;padding:26px;border-left:4px solid #1478F2;background:#F7FAFE;color:#17243A}.topic-columns{columns:2 360px;column-gap:32px}.topic-columns article{break-inside:avoid;padding:0 0 26px;margin-bottom:26px;border-bottom:1px solid rgba(20,40,70,.08)}.chapter-list{display:grid;gap:32px}.chapter-list article{display:grid;grid-template-columns:130px 1fr;gap:28px;border-top:1px solid rgba(20,40,70,.08);padding-top:28px}.chapter-label{font-weight:900;color:#1478F2;letter-spacing:.06em}.guide-directory{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.guide-directory article{padding:22px 24px;background:#fff;border-radius:12px;border-left:4px solid #1478F2}.notice-board{max-width:950px;margin:auto;background:#fff;border:1px solid rgba(20,40,70,.08);border-radius:18px;padding:14px 30px}.notice-board article{display:grid;grid-template-columns:150px 1fr;gap:28px;padding:26px 0;border-bottom:1px solid rgba(20,40,70,.08)}.notice-board article:last-child{border-bottom:0}.values-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.values-grid article{padding:28px;background:#fff;border-radius:16px;border:1px solid rgba(20,120,242,.12)}.risk-steps{counter-reset:risk;display:grid;gap:12px}.risk-steps article{counter-increment:risk;padding:20px 22px 20px 78px;background:#fff;border-radius:14px;position:relative}.risk-steps article:before{content:counter(risk,decimal-leading-zero);position:absolute;left:22px;top:20px;color:#1478F2;font-weight:900}.privacy-categories{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.privacy-categories article{padding:24px;background:#fff;border-top:3px solid #1478F2}.rules{max-width:940px}.rules article{padding:30px 0;border-bottom:1px solid rgba(20,40,70,.08)}.help-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.help-nav a{min-height:110px;padding:18px;border:1px solid rgba(20,120,242,.12);border-radius:14px;background:#fff;font-weight:700}.faq-list{max-width:980px;margin:auto}.faq-list details{border-bottom:1px solid rgba(20,40,70,.08);padding:4px 0}.faq-list summary{cursor:pointer;font-weight:700;color:#17243A;padding:20px 0;min-height:60px}.faq-list details p{padding:0 10px 22px;color:#596677}.feedback-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.feedback-flow article{padding:24px;background:#fff;border-radius:14px;border:1px solid rgba(20,120,242,.12)}.contact-paths{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.contact-paths article{padding:24px;border-bottom:2px solid #DCEBFF;background:#fff}.about-band{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}.brand-visual{min-height:360px;border-radius:22px;background:linear-gradient(145deg,#EDF5FF,#DCEBFF);display:grid;place-items:center;color:#1478F2;text-align:center}.brand-visual strong{font-size:3rem;display:block}.brand-visual span{letter-spacing:.18em;font-size:11px}
@media (max-width:1100px){.desktop-nav a{padding:0 8px;font-size:13px}.text-action{padding:0 8px}.explore-desk{grid-template-columns:1fr 1.35fr}.hero-side{grid-column:1/-1;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.explore-grid{grid-template-columns:repeat(3,1fr)}.grid-4,.folder-grid{grid-template-columns:repeat(2,1fr)}.feature-list{grid-template-columns:repeat(2,1fr)}.handbook-list,.principle-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:820px){.site-header,.nav-shell{height:64px}.nav-shell{padding:0 15px;display:grid;grid-template-columns:44px 1fr 44px;gap:8px}.desktop-only,.desktop-nav{display:none!important}.mobile-only{display:grid}.brand{justify-content:center;min-width:0}.brand-logo{max-height:38px;max-width:180px;object-fit:contain}.brand-fallback{flex-direction:column;align-items:center;gap:0;line-height:1}.brand-fallback strong{font-size:18px}.brand-fallback small{font-size:7px;margin-top:4px}.nav-actions{display:block}.nav-actions .icon-button{margin-left:auto}main{padding-top:64px;padding-bottom:66px}.overlay{inset:64px 0 64px}.explore-panel,.search-panel{top:64px;bottom:64px;max-height:none}.explore-grid{grid-template-columns:1fr;padding:18px 15px 30px}.explore-grid section{border-bottom:1px solid rgba(20,40,70,.08);padding-bottom:12px}.panel-head,.search-wrap{padding-left:15px;padding-right:15px}.search-layout{grid-template-columns:1fr}.search-results{grid-template-columns:1fr}.section,.page-shell{padding:62px 15px}.section-tight{padding-top:42px;padding-bottom:42px}.explore-desk{padding:40px 15px;display:flex;flex-direction:column}.hero-intro{order:1;padding:8px 0}.hero-cover{order:2;min-height:300px;padding:24px}.hero-side{order:3;display:block;padding:10px 0}.editorial-list,.grid-2,.grid-3,.grid-4,.city-mag,.plan-board,.life-flow,.qa-grid,.story-grid,.feature-list,.handbook-list,.folder-grid,.principle-grid,.app-showcase,.safety-list,.layout-split,.inner-cards,.topic-map,.guide-directory,.values-grid,.privacy-categories,.feedback-flow,.contact-paths,.about-band{grid-template-columns:1fr}.editorial-item:nth-child(odd){border-right:0}.city-piece.feature{grid-row:auto;min-height:300px}.travel-step{grid-template-columns:66px 1fr}.inspiration-wall{columns:1}.page-hero{padding:55px 15px 34px}.page-hero .inner{grid-template-columns:1fr}.section-head{display:block}.hero-note{margin-top:10px}.layout-split aside{position:static}.chapter-list article,.bulletin-list article,.notice-board article{grid-template-columns:1fr;gap:8px}.help-nav{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr;gap:24px}.footer-brand{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom div{margin-top:12px;flex-wrap:wrap}.mobile-bottom-nav{position:fixed;bottom:0;left:0;right:0;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 rgba(20,40,70,.08);z-index:130;display:grid;grid-template-columns:repeat(5,1fr)}.mobile-bottom-nav a{min-height:48px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;color:#6E7988;font-size:12px}.mobile-bottom-nav a span{font-size:18px;line-height:1}.mobile-bottom-nav a b{font-size:10px}.mobile-bottom-nav a.is-current{color:#1478F2}.site-footer{padding:48px 15px 96px}.horizontal-index{margin-right:-15px;padding-right:15px}.app-visual{min-height:310px}.brand-visual{min-height:260px}}
@media (prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid rgba(20,120,242,.35);outline-offset:3px}.hero-cover:before,.brand-visual:before{pointer-events:none} [hidden]{display:none!important}