:root{
  --theme:#00a6ff;
  --theme-dark:#0073b3;
  --theme-deep:#003e61;
  --theme-light:#f1fbff;
  --theme-soft:#dcf4ff;
  --theme-accent:#4dc6ff;
  --theme-hover:#0089d4;
  --theme-border:rgba(0,166,255,.24);
  --header-bg:#004f78;
  --header-bg-2:#006b9e;
  --text-main:#12384a;
  --text-muted:#4f7180;
  --on-theme:#052a3a;
  --on-header:#f5fcff;
  --on-dark:#f5fcff;
  --white:#ffffff;
  --shadow-soft:0 18px 46px rgba(0,79,120,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--theme-light);color:var(--text-main);font-family:Arial,"Helvetica Neue",sans-serif;line-height:1.7;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto;object-fit:contain}
button,input,textarea,select{font:inherit}
main{min-height:60vh}
.section{padding:64px 20px}
.section.compact{padding-top:36px;padding-bottom:36px}
.section-inner,.hero-inner,.header-inner,.footer-inner,.footer-bottom{width:min(1280px,calc(100% - 80px));margin-left:auto;margin-right:auto}
.section-kicker,.hero-badge{display:inline-flex;align-items:center;width:max-content;max-width:100%;padding:7px 13px;border:1px solid var(--theme-border);background:var(--theme-soft);border-radius:999px;color:var(--theme-dark);font-weight:700;font-size:.9rem}
h1,h2,h3{line-height:1.2;color:var(--theme-dark);margin-top:0}
h1{font-size:clamp(2.35rem,4.2vw,4rem);letter-spacing:-.035em}
h2{font-size:clamp(1.7rem,2.5vw,2.45rem);margin-bottom:18px}
h3{font-size:1.14rem;margin-bottom:8px}
p{margin:0 0 17px;color:var(--text-main)}
.lead{font-size:1.08rem;color:var(--text-muted)}
.muted{color:var(--text-muted)}
.site-header{position:sticky;top:0;z-index:9999;background:linear-gradient(180deg,var(--header-bg) 0%,var(--header-bg-2) 100%);color:var(--on-header);box-shadow:var(--shadow-soft);border-bottom:1px solid var(--theme-border)}
.header-inner{min-height:82px;display:grid;grid-template-columns:180px minmax(0,1fr) auto;align-items:center;gap:24px}
.site-logo{display:flex;align-items:center;justify-content:flex-start}.site-logo img{max-width:170px;max-height:58px;width:auto;height:auto;object-fit:contain}
.desktop-nav{display:flex;align-items:center;justify-content:center;gap:4px;min-width:0}.desktop-nav a{position:relative;white-space:nowrap;padding:11px 8px;font-weight:700;font-size:.87rem;color:var(--on-header);border-radius:10px}.desktop-nav a:hover,.desktop-nav a.active{background:rgba(255,255,255,.1)}.desktop-nav a.active:after{content:"";position:absolute;left:10px;right:10px;bottom:4px;height:3px;border-radius:3px;background:var(--theme-accent)}
.header-login,.main-btn{display:inline-flex;justify-content:center;align-items:center;min-height:44px;padding:11px 18px;border-radius:12px;background:linear-gradient(180deg,var(--theme-accent) 0%,var(--theme) 48%,var(--theme-dark) 100%);color:var(--on-theme);font-weight:800;box-shadow:0 14px 28px rgba(0,0,0,.16);transition:.2s ease}.header-login:hover,.main-btn:hover{background:linear-gradient(180deg,var(--theme-accent) 0%,var(--theme-hover) 55%,var(--theme-dark) 100%);transform:translateY(-1px)}
.mobile-menu-toggle{display:none;background:transparent;border:1px solid rgba(255,255,255,.35);border-radius:10px;padding:9px;width:42px;height:42px}.mobile-menu-toggle span{display:block;height:2px;background:var(--on-header);margin:4px 0;border-radius:3px}
.hero-section{padding:62px 20px 52px;background:linear-gradient(135deg,var(--theme-light) 0%,var(--theme-soft) 100%);border-bottom:1px solid var(--theme-border)}
.hero-inner{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);align-items:center;gap:56px;min-height:520px}.hero-content h1{margin:16px 0 22px}.hero-content>p{max-width:750px;font-size:1.08rem;line-height:1.85}.hero-tags,.entity-pills,.category-pills,.related-links{display:flex;flex-wrap:wrap;gap:10px}.hero-tags span,.entity-pills span,.category-pills a,.related-links a{display:inline-flex;align-items:center;min-height:38px;padding:8px 13px;border:1px solid var(--theme-border);border-radius:999px;background:rgba(255,255,255,.72);color:var(--theme-dark);font-weight:700}.category-pills a:hover,.related-links a:hover{background:var(--theme-hover);color:var(--on-theme)}
.hero-visual,.media-box,.app-visual,.card-media{display:flex;align-items:center;justify-content:center;overflow:visible}.hero-media-box,.page-media-box{width:min(100%,540px);min-height:310px;max-height:420px;padding:34px;border:1px solid var(--theme-border);border-radius:28px;background:rgba(255,255,255,.72);box-shadow:var(--shadow-soft);display:flex;align-items:center;justify-content:center;overflow:visible}.hero-media-box img{max-width:70%;max-height:340px;width:auto;height:auto;object-fit:contain;opacity:1}.page-media-box img{max-width:100%;max-height:330px;width:auto;height:auto;object-fit:contain}
.info-section{padding-top:42px}.info-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.info-card,.topic-card,.service-card,.faq-item,.review-card,.news-card,.category-card{position:relative;border:1px solid var(--theme-border);background:var(--white);border-radius:20px;padding:24px;box-shadow:0 10px 30px rgba(0,79,120,.09)}.info-card:before,.topic-card:before,.category-card:before{content:"";position:absolute;left:0;right:0;top:0;height:4px;border-radius:20px 20px 0 0;background:linear-gradient(90deg,var(--theme),var(--theme-accent))}.info-number{font-weight:900;color:var(--theme-dark);font-size:1.55rem}.info-card h2{font-size:1.16rem;margin:8px 0}.info-card p{font-size:.95rem;color:var(--text-muted);margin-bottom:0}
.category-section{padding-top:20px;padding-bottom:44px}.category-pills{justify-content:center}.category-pills a{background:var(--white)}
.section-heading{max-width:820px;margin-bottom:30px}.section-heading p{color:var(--text-muted)}
.category-grid,.topic-grid,.service-grid,.news-grid,.faq-grid,.review-grid{display:grid;gap:20px}.category-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.service-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.faq-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.review-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.category-card h3,.topic-card h3,.service-card h3,.news-card h3{color:var(--theme-dark);font-size:1.18rem}.category-card p,.topic-card p,.service-card p,.news-card p,.review-card p{color:var(--text-muted)}.text-link{font-weight:800;color:var(--theme-dark)}
.alt-section{background:var(--theme-soft);border-top:1px solid var(--theme-border);border-bottom:1px solid var(--theme-border)}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.86fr);gap:48px;align-items:center}.split.reverse .media-box{order:-1}.split .media-box{min-height:300px;padding:26px;border-radius:24px;background:var(--white);border:1px solid var(--theme-border);box-shadow:var(--shadow-soft)}.split .media-box img{max-height:300px;width:auto;height:auto;object-fit:contain}
.check-list,.plain-list{padding:0;margin:20px 0;list-style:none}.check-list li,.plain-list li{position:relative;padding-left:28px;margin:12px 0}.check-list li:before,.plain-list li:before{content:"✓";position:absolute;left:0;color:var(--theme-dark);font-weight:900}.notice{padding:24px;border:1px solid var(--theme-border);border-left:5px solid var(--theme);border-radius:18px;background:var(--theme-soft)}.notice h3{margin-bottom:10px}.notice p:last-child{margin-bottom:0}
.subhero{padding:54px 20px;background:linear-gradient(135deg,var(--theme-light),var(--theme-soft));border-bottom:1px solid var(--theme-border)}.subhero-inner{width:min(1280px,calc(100% - 80px));margin-left:auto;margin-right:auto;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);align-items:center;gap:48px}.subhero h1{margin:15px 0 20px}.subhero .lead{font-size:1.05rem}.subhero .entity-pills{margin-top:22px}.article-section{padding:58px 20px}.article-layout{width:min(1040px,100%);margin:0 auto}.article-layout>section{margin-bottom:56px}.article-layout p{font-size:1.02rem;line-height:1.82}.detail-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:24px}.detail-card{border:1px solid var(--theme-border);background:var(--white);border-radius:18px;padding:22px}.detail-card h3{margin-bottom:8px}.detail-card p{margin-bottom:0;color:var(--text-muted)}.tip-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:22px}.tip{padding:18px;border-radius:16px;background:var(--theme-soft);border:1px solid var(--theme-border)}.tip strong{display:block;color:var(--theme-dark);margin-bottom:5px}.feedback-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.review-card:before{content:"“";font-size:2rem;font-weight:900;color:var(--theme);line-height:1}.review-card p{margin:4px 0 0}.faq-list{display:grid;gap:14px}.faq-item h3{font-size:1.08rem;margin-bottom:8px}.faq-item p{margin:0;color:var(--text-muted)}.related-box{padding:24px;border-radius:20px;background:var(--white);border:1px solid var(--theme-border)}
.age-mark{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:50%;background:var(--theme);color:var(--on-theme);font-weight:900;font-size:1.15rem}
.site-footer{background:var(--theme-deep);color:var(--on-dark);padding:54px 20px 22px}.footer-inner{display:grid;grid-template-columns:1.45fr repeat(3,1fr);gap:36px}.site-footer h2{font-size:1.05rem;color:var(--theme-accent);margin-bottom:12px}.site-footer a{display:block;color:var(--on-dark);opacity:.88;padding:4px 0}.site-footer a:hover{opacity:1;color:var(--theme-accent)}.footer-brand img{max-width:170px;max-height:58px;margin-bottom:18px}.footer-brand p{color:var(--on-dark);opacity:.82}.footer-bottom{border-top:1px solid rgba(255,255,255,.16);margin-top:34px;padding-top:22px}.footer-bottom p{color:var(--on-dark);opacity:.76;margin:0;font-size:.9rem}
.mobile-drawer{position:fixed;z-index:10001;top:0;left:0;bottom:0;width:min(84vw,340px);padding:20px;background:var(--theme-deep);color:var(--on-dark);transform:translateX(-105%);transition:transform .25s ease;overflow:auto}.mobile-drawer.is-open{transform:translateX(0)}.drawer-overlay{position:fixed;z-index:10000;inset:0;background:rgba(0,0,0,.48);opacity:0;pointer-events:none;transition:opacity .2s ease}.drawer-overlay.is-open{opacity:1;pointer-events:auto}.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:22px}.drawer-logo img{max-width:150px;max-height:52px}.drawer-close{width:42px;height:42px;border:1px solid rgba(255,255,255,.25);border-radius:10px;background:transparent;color:var(--on-dark);font-size:1.6rem}.drawer-nav{display:grid;gap:7px}.drawer-nav a{padding:12px 13px;border-radius:10px;border:1px solid rgba(255,255,255,.09)}.drawer-nav a.active,.drawer-nav a:hover{background:rgba(77,198,255,.16);border-color:rgba(77,198,255,.45)}body.menu-open{overflow:hidden}

@media (min-width:1440px){.section-inner,.hero-inner,.header-inner,.footer-inner,.footer-bottom,.subhero-inner{width:min(1360px,calc(100% - 120px))}.hero-inner{grid-template-columns:minmax(0,1.05fr) minmax(480px,.95fr);gap:80px}.hero-media-box{max-width:620px;min-height:420px}.hero-media-box img{max-height:340px}}
@media (max-width:1180px){.header-inner{padding:0 18px;grid-template-columns:150px minmax(0,1fr) auto;gap:10px}.desktop-nav a{font-size:.79rem;padding:10px 5px}.site-logo img{max-width:145px}.header-login{padding:10px 13px}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:1023px){.desktop-nav{display:none}.mobile-menu-toggle{display:block}.header-inner{grid-template-columns:42px minmax(0,1fr) auto;min-height:72px}.site-logo{justify-content:center}.site-logo img{max-width:140px;max-height:50px}.hero-inner,.subhero-inner,.split{grid-template-columns:1fr;gap:34px}.hero-inner{min-height:auto}.hero-content{text-align:left}.hero-visual{justify-content:center}.hero-media-box{min-height:270px}.hero-media-box img{max-height:280px}.info-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.topic-grid,.service-grid,.review-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-inner{grid-template-columns:repeat(2,minmax(0,1fr))}.split.reverse .media-box{order:0}}
@media (max-width:767px){.section-inner,.hero-inner,.header-inner,.footer-inner,.footer-bottom,.subhero-inner{width:min(100% - 32px,1280px)}.section,.article-section{padding:44px 16px}.hero-section,.subhero{padding:40px 16px}.header-inner{padding:0 12px}.header-login{font-size:.77rem;padding:9px 10px;min-height:40px}.site-logo img{max-width:120px}.hero-content h1,.subhero h1{font-size:clamp(2rem,10vw,3rem)}.hero-content>p{font-size:1rem}.hero-media-box,.page-media-box{min-height:220px;padding:24px}.hero-media-box img{max-height:220px}.info-grid,.category-grid,.topic-grid,.service-grid,.news-grid,.faq-grid,.review-grid,.detail-grid,.tip-list,.feedback-grid,.footer-inner{grid-template-columns:1fr}.category-pills{justify-content:flex-start}.info-card,.topic-card,.service-card,.faq-item,.review-card,.news-card,.category-card{padding:20px}.article-layout>section{margin-bottom:42px}.site-footer{padding:42px 16px 20px}}
@media (min-width:1280px){.section{padding-top:72px;padding-bottom:72px}.hero-inner{min-height:560px}}