@charset "UTF-8";
:root{--ink:#14233b;--navy:#101e35;--sub:#5f6f87;--line:#dde5ed;--paper:#fff;--canvas:#f5f8fc;--accent:#007f99;--cyan:#42d3dc;--shadow:0 15px 42px rgba(16,34,57,.075);--radius:19px}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--canvas);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic",Meiryo,sans-serif;line-height:1.82;-webkit-font-smoothing:antialiased}body.dialog-open{overflow:hidden}a{color:inherit}a:hover{color:var(--accent)}img{display:block;max-width:100%}button,input{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #56bad9;outline-offset:3px}p{margin:0 0 1.2em}h1,h2,h3{letter-spacing:-.035em;line-height:1.35}h1{font-size:clamp(2.18rem,5.1vw,4.7rem);margin:0}h2{font-size:clamp(1.48rem,2.8vw,2.5rem);margin:0 0 18px}h3{font-size:1.2rem;margin:0 0 13px}ul{padding-left:1.4em}.container{width:min(1180px,calc(100% - 44px));margin-inline:auto}.skip-link{position:absolute;left:12px;top:-80px;background:white;padding:10px;z-index:1000}.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}.header-inner{display:flex;min-height:78px;align-items:center;justify-content:space-between;gap:30px}.logo{display:flex;align-items:center;gap:12px;text-decoration:none;font-size:1.15rem;font-weight:900;letter-spacing:.015em;white-space:nowrap;color:var(--ink)}.logo img{width:45px;height:45px}.logo small{display:block;font-size:.6rem;color:var(--sub);letter-spacing:.17em;font-weight:700;line-height:1;margin-top:3px}.main-nav{display:flex;align-items:center;gap:26px}.main-nav a{text-decoration:none;font-size:.9rem;font-weight:700;color:#34455e}.main-nav a[aria-current="page"],.main-nav a:hover{color:var(--accent)}.header-side{font-weight:800;font-size:.71rem;letter-spacing:.13em;border-left:1px solid var(--line);padding-left:25px;color:var(--sub)}.menu-toggle{display:none;border:1px solid var(--line);background:white;color:var(--ink);padding:8px 12px;border-radius:10px;font-weight:800}
.eyebrow{color:#0a8198;font-size:.76rem;font-weight:900;letter-spacing:.18em;margin:0 0 16px}.eyebrow-light{color:#7becf1}.hero{background:#101f36;position:relative;overflow:hidden;color:white}.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 76% 34%,#1a587363,transparent 45%),linear-gradient(110deg,transparent 45%,#8ffaff08 45.3%,transparent 45.7%)}.hero-inner{position:relative;display:grid;grid-template-columns:1.02fr .98fr;align-items:center;min-height:558px;gap:18px}.hero-content{padding:65px 0 66px}.hero h1{max-width:670px;font-size:clamp(2.5rem,5vw,5.1rem);line-height:1.19}.hero h1 em{font-style:normal;color:#6ce2e6}.hero-lead{font-size:1.06rem;line-height:2;max-width:530px;color:#d2e1ea;margin:25px 0 31px}.hero-art{width:100%;max-width:600px;justify-self:end;filter:drop-shadow(0 20px 70px #061525)}.hero-bar{display:flex;gap:16px;flex-wrap:wrap;align-items:center}.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;border:0;border-radius:12px;padding:13px 22px;text-decoration:none;font-weight:850;line-height:1.4;transition:transform .2s,background .2s}.btn:hover{transform:translateY(-2px)}.btn-primary{background:#69e3e5;color:#0e273f}.btn-primary:hover{background:#aeffff;color:#0e273f}.btn-dark{background:var(--navy);color:white}.btn-dark:hover{background:#2e4b6b;color:white}.btn-ghost{border:1px solid #527087;color:#e0f5fb}.btn-ghost:hover{color:white;border-color:white}.hero-note{font-size:.75rem;color:#a6becb;letter-spacing:.08em}.tiny-rule{height:4px;width:38px;background:#51d6d8;border-radius:10px;margin-bottom:20px}.topic-strip{border-bottom:1px solid var(--line);background:#fff}.topic-strip-inner{min-height:76px;display:flex;align-items:center;gap:11px;overflow-x:auto;white-space:nowrap}.topic-strip strong{margin-right:16px;font-size:.75rem;letter-spacing:.13em;color:var(--sub)}.topic-link{font-size:.8rem;text-decoration:none;padding:7px 13px;border-radius:40px;background:#f0f5f8;font-weight:750;white-space:nowrap}.topic-link:hover{background:#d9f7f9}.section{padding:74px 0}.section-tight{padding:45px 0 67px}.section-top{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:30px}.section-top h2{margin:0}.section-lead{max-width:620px;color:var(--sub);font-size:.98rem}.section-action{white-space:nowrap;color:var(--accent);font-weight:800;text-decoration:none}.section-action::after{content:'  ↗'}.feature{display:grid;grid-template-columns:1.18fr .82fr;gap:24px}.feature-card,.spotlight{border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.feature-card img{width:100%;aspect-ratio:880/465;object-fit:cover}.feature-copy{padding:28px 32px 32px}.feature-copy h3{font-size:clamp(1.4rem,2.7vw,2.05rem);line-height:1.45}.feature-copy h3 a,.article-card h3 a{color:var(--ink);text-decoration:none}.feature-copy h3 a:hover,.article-card h3 a:hover{color:var(--accent)}.article-summary{color:var(--sub);font-size:.91rem}.meta{display:flex;align-items:center;gap:11px;flex-wrap:wrap;font-size:.72rem;font-weight:750;letter-spacing:.02em;color:#60728b}.tag{font-size:.7rem;font-weight:850;letter-spacing:.05em;color:#007c95;background:#e8f9fb;border-radius:6px;padding:3px 9px}.stack{display:grid;gap:17px}.spotlight{display:grid;grid-template-columns:42% 1fr;min-height:180px}.spotlight img{height:100%;width:100%;object-fit:cover}.spotlight-copy{padding:22px}.spotlight h3{font-size:1.1rem;line-height:1.6;margin:10px 0 8px}.spotlight h3 a{text-decoration:none}.spotlight p{font-size:.8rem;color:var(--sub);margin:0}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.article-card{border:1px solid var(--line);border-radius:var(--radius);background:white;overflow:hidden;box-shadow:0 5px 22px #122b4310;transition:transform .2s,box-shadow .2s}.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.article-card img{width:100%;aspect-ratio:880/520;object-fit:cover}.card-copy{padding:22px 23px 25px}.article-card h3{font-size:1.12rem;line-height:1.57;margin:13px 0 12px}.article-card p{font-size:.84rem;color:var(--sub);margin:0 0 15px}.read-link{display:inline-block;color:var(--accent);font-weight:850;text-decoration:none;font-size:.85rem}.read-link::after{content:'  →'}.section-dark{background:#152840;color:white}.section-dark .section-lead{color:#b8d1df}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.step{background:#1f3652;padding:29px;border-radius:18px;border:1px solid #36516e}.step .num{font-weight:900;color:#81f2ed;font-size:1.75rem;letter-spacing:.03em}.step p{color:#d0dfeb;font-size:.9rem;margin:12px 0 0}.section-lower{background:white}.duo{display:grid;grid-template-columns:1fr 1fr;gap:45px}.duo p{color:var(--sub)}.faq details{background:white;border:1px solid var(--line);border-radius:12px;padding:17px 20px;margin-bottom:12px}.faq summary{font-weight:800;cursor:pointer;line-height:1.6}.faq details p{color:var(--sub);font-size:.92rem;margin:12px 0 0}.cta-strip{padding:39px;border-radius:20px;background:#e4f7f8;border:1px solid #b6e7ea;display:flex;justify-content:space-between;align-items:center;gap:25px}.cta-strip h2{font-size:1.45rem;margin-bottom:9px}.cta-strip p{margin:0;color:#456274}
.page-hero{background:#f1f7fb;padding:60px 0 53px;border-bottom:1px solid var(--line)}.page-hero h1{font-size:clamp(2.2rem,4.5vw,3.9rem)}.page-hero p{max-width:800px;color:var(--sub);font-size:1.02rem;margin:20px 0 0}.crumbs{font-size:.75rem;color:#63758b;margin-bottom:23px;display:flex;gap:10px;flex-wrap:wrap}.crumbs a{text-decoration:none}.article-page-head{background:#f0f7fa;padding:38px 0 50px}.article-page-head h1{max-width:930px;font-size:clamp(2.13rem,4.6vw,3.55rem);line-height:1.39}.article-page-head .dek{font-size:1.03rem;color:var(--sub);max-width:750px;margin:18px 0 26px}.article-page-head .meta{font-size:.79rem}.article-hero-image{width:100%;aspect-ratio:880/430;object-fit:cover;border-radius:19px;margin:31px 0 0;border:1px solid #29435f}.article-shell{display:grid;grid-template-columns:minmax(0,730px) minmax(210px,1fr);gap:70px;align-items:start;padding:65px 0 80px}.article-body{font-size:1.02rem;line-height:2.03}.article-body h2{font-size:1.53rem;margin:45px 0 18px;padding-left:17px;border-left:5px solid #13b8c4}.article-body h2:first-child{margin-top:0}.article-body p{margin-bottom:22px}.article-body .source-box{background:#eff7fa;border:1px solid #cae2e9;border-radius:14px;padding:21px 25px;margin-top:35px}.source-box h2{font-size:1.15rem;border:0;padding:0;margin:0 0 14px}.source-box li{margin:7px 0;font-size:.86rem}.source-box a{color:#006d87;overflow-wrap:anywhere}.article-sidebar{position:sticky;top:110px}.side-panel{border:1px solid var(--line);border-radius:15px;background:white;padding:26px}.side-panel h2{font-size:1.03rem}.side-panel a{display:block;text-decoration:none;color:#294460;font-weight:750;border-top:1px solid var(--line);padding:12px 0;font-size:.9rem}.side-panel a:hover{color:var(--accent)}.mini-title{font-size:.72rem;color:var(--sub);font-weight:800;letter-spacing:.12em;margin:0 0 14px}.related{padding:60px 0 70px;border-top:1px solid var(--line)}.prose-card{background:white;border:1px solid var(--line);border-radius:17px;padding:34px clamp(24px,5vw,60px);max-width:920px}.prose-card h2{font-size:1.48rem;margin:33px 0 14px}.prose-card h2:first-child{margin-top:0}.prose-card h3{font-size:1.05rem;margin:25px 0 10px}.prose-card p,.prose-card li{color:#485b73}.prose-card a{color:#006e8b;overflow-wrap:anywhere}.prose-card dl{display:grid;grid-template-columns:210px 1fr;border-top:1px solid var(--line);margin:20px 0}.prose-card dt,.prose-card dd{margin:0;padding:14px 8px;border-bottom:1px solid var(--line)}.prose-card dt{font-weight:800}.prose-card dd{overflow-wrap:anywhere}.callout{border-left:4px solid #29bbc8;background:#edfafd;padding:18px 22px;border-radius:0 12px 12px 0;margin:22px 0}.archive-controls{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin:24px 0 29px}.archive-controls input{width:min(370px,100%);background:white;border:1px solid #cbdbe5;border-radius:10px;padding:11px 16px}.filter-chip{background:#e9f1f7;border:1px solid transparent;color:#3c5167;border-radius:30px;padding:7px 13px;font-size:.78rem;font-weight:750}.filter-chip.active{background:#172d47;color:white}.archive-empty{padding:30px;background:white;border-radius:14px;border:1px solid var(--line)}
.site-footer{background:#0d1b2f;color:#e7f2fa;padding:60px 0 25px}.footer-main{display:grid;grid-template-columns:1.05fr 1fr 1fr;gap:45px}.site-footer .logo{color:white}.footer-intro{font-size:.84rem;line-height:1.95;color:#9eb3ca;max-width:355px;margin-top:19px}.footer-heading{font-weight:900;font-size:.86rem;margin:0 0 18px;letter-spacing:.08em;color:white}.footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px 16px}.footer-links a,.footer-contact a{font-size:.78rem;color:#b9ccdc;text-decoration:none;overflow-wrap:anywhere}.footer-links a:hover,.footer-contact a:hover{color:#80e9ed}.footer-contact{margin:0;font-size:.76rem;color:#b9ccdc;line-height:1.85}.footer-contact dt{font-weight:900;color:#f0f8fc;margin-top:10px}.footer-contact dd{margin:0}.footer-bottom{border-top:1px solid #35485f;padding-top:23px;margin-top:42px;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:.74rem;color:#93a9ba}.footer-bottom p{margin:0}.footer-cookie-btn{border:1px solid #63758c;color:#e8f6fc;background:transparent;border-radius:7px;padding:7px 14px;font-size:.75rem}
.cookie-banner{position:fixed;z-index:60;bottom:18px;left:50%;transform:translateX(-50%);width:min(1060px,calc(100% - 32px));padding:22px 25px;display:flex;align-items:center;justify-content:space-between;gap:28px;background:#fff;box-shadow:0 18px 70px #001c3359;border:1px solid #d2e5ed;border-radius:16px}.cookie-banner[hidden],.cookie-dialog[hidden]{display:none}.cookie-banner h2{font-size:1.05rem;margin:0 0 7px}.cookie-banner p{font-size:.77rem;color:#5c6b7b;line-height:1.6;margin:0;max-width:530px}.cookie-actions{display:flex;gap:9px;flex-wrap:wrap}.cookie-actions button,.cookie-save{font-size:.78rem;font-weight:800;border-radius:9px;border:1px solid #b7c7d8;padding:11px 13px;background:#fff;color:#20364f}.cookie-actions .accept,.cookie-save{background:#102d45;color:white;border-color:#102d45}.cookie-dialog{position:fixed;inset:0;z-index:70;display:grid;place-items:center;padding:18px;background:#09162bbb}.cookie-panel{width:min(610px,100%);max-height:min(86vh,800px);overflow-y:auto;background:white;border-radius:18px;padding:27px 30px;box-shadow:0 30px 90px #071b3555}.cookie-panel-top{display:flex;align-items:center;justify-content:space-between;gap:12px}.cookie-panel h2{font-size:1.35rem;margin:0}.cookie-close{background:#eff4f7;border:0;border-radius:9px;width:38px;height:38px;font-weight:900}.cookie-panel>p{font-size:.86rem;color:var(--sub);margin:16px 0 20px}.cookie-row{border-top:1px solid var(--line);padding:15px 0}.cookie-row label{display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:.94rem;font-weight:850}.cookie-row p{font-size:.77rem;color:var(--sub);margin:6px 0 0;line-height:1.65}.cookie-row input{width:21px;height:21px;accent-color:#168ea4}.cookie-status{font-size:.76rem;color:#4b647b}.cookie-panel-buttons{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}.cookie-panel-buttons button{border-radius:9px;padding:10px 16px;font-size:.85rem;font-weight:800}.cookie-save{font-size:.86rem}.cookie-decline{background:#fff;border:1px solid #b7c7d8}
@media(max-width:1030px){.header-side{display:none}.feature{grid-template-columns:1fr}.stack{grid-template-columns:repeat(2,1fr)}.spotlight{grid-template-columns:1fr}.spotlight img{aspect-ratio:880/520;height:auto}.cards{grid-template-columns:repeat(2,1fr)}.article-shell{gap:30px;grid-template-columns:minmax(0,1fr) 230px}.footer-main{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}
@media(max-width:760px){.container{width:min(100% - 30px,1180px)}.header-inner{min-height:69px;gap:12px}.logo{font-size:1rem}.logo img{width:40px;height:40px}.menu-toggle{display:block}.main-nav{display:none;position:absolute;left:0;right:0;top:69px;background:#fff;border-bottom:1px solid var(--line);padding:13px 20px 21px;box-shadow:0 15px 25px #10203314;flex-direction:column;align-items:stretch;gap:0}.main-nav.is-open{display:flex}.main-nav a{padding:10px 5px}.hero-inner{grid-template-columns:1fr;min-height:0;gap:0}.hero-content{padding:55px 0 10px}.hero h1{font-size:clamp(2.4rem,8vw,4rem)}.hero-lead{margin:22px 0}.hero-art{max-width:470px;justify-self:center;max-height:330px}.section{padding:51px 0}.section-tight{padding:35px 0 54px}.section-top{align-items:flex-start;flex-direction:column;gap:10px}.feature-copy{padding:24px}.stack{grid-template-columns:1fr}.spotlight{grid-template-columns:39% 1fr;min-height:140px}.spotlight img{height:100%;aspect-ratio:auto}.spotlight-copy{padding:15px}.spotlight p{display:none}.cards{grid-template-columns:1fr;gap:16px}.steps{grid-template-columns:1fr}.duo{grid-template-columns:1fr;gap:21px}.cta-strip{align-items:start;flex-direction:column;padding:24px}.page-hero{padding:37px 0}.article-page-head{padding:28px 0 34px}.article-page-head h1{font-size:2.1rem}.article-shell{display:block;padding:34px 0 48px}.article-sidebar{position:static;margin-top:35px}.article-body h2{font-size:1.35rem;margin-top:38px}.footer-main{grid-template-columns:1fr;gap:25px}.footer-brand{grid-column:auto}.footer-bottom{align-items:start;flex-direction:column}.cookie-banner{align-items:stretch;flex-direction:column;gap:12px;bottom:8px;padding:17px}.cookie-actions{display:grid;grid-template-columns:1fr 1fr}.cookie-actions button:last-child{grid-column:1/-1}.cookie-panel{padding:20px}.prose-card{padding:25px 20px}.prose-card dl{grid-template-columns:1fr}.prose-card dt{border:0;padding-bottom:0}.prose-card dd{padding-top:3px}}
@media(max-width:390px){.logo{font-size:.86rem}.logo img{width:34px;height:34px}.cookie-actions{grid-template-columns:1fr}.cookie-actions button:last-child{grid-column:auto}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}