* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0;
  background: #FFFFFF;
  color: #3C495D;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
img { max-width: 100%; height: auto; }
.shell { width: min(1320px, calc(100% - 40px)); 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: -80px; z-index: 3000; background: #1478F2; color: #fff; padding: 10px 14px; border-radius: 10px; }
.skip-link:focus { top: 12px; }

.site-header { position: sticky; top: 0; z-index: 1200; background: rgba(255,255,255,.96); border-bottom: 1px solid rgba(20,40,70,.08); backdrop-filter: blur(14px); }
.desktop-header { height: 72px; display: flex; align-items: center; gap: 22px; }
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; min-height: 44px; }
.brand-logo { display: block; max-width: 190px; height: 42px; object-fit: contain; }
.brand-fallback { display: inline-flex; flex-direction: column; padding: 7px 12px; background: #1478F2; color: #fff; border-radius: 10px; line-height: 1; }
.brand-fallback strong { font-size: 16px; }
.brand-fallback small { margin-top: 5px; font-size: 8px; letter-spacing: .14em; }
.desktop-nav { display: flex; align-items: center; flex: 1; min-width: 0; gap: 3px; white-space: nowrap; }
.nav-link, .header-text-link { position: relative; display: inline-flex; align-items: center; min-height: 44px; padding: 0 11px; border-radius: 10px; color: #4B596D; font-size: 14px; font-weight: 700; }
.nav-link:hover, .header-text-link:hover { background: #EDF5FF; color: #1478F2; }
.nav-link.is-active, .header-text-link.is-active { color: #1478F2; }
.nav-link.is-active::after, .header-text-link.is-active::after { content: ""; position: absolute; left: 50%; bottom: 3px; width: 5px; height: 5px; margin-left: -2.5px; background: #1478F2; border-radius: 50%; }
.header-actions { display: flex; align-items: center; gap: 4px; flex: 0 0 auto; }
.header-button, .panel-close { min-width: 44px; min-height: 44px; border: 0; background: transparent; color: #17243A; border-radius: 10px; }
.header-button { display: inline-flex; align-items: center; justify-content: center; gap: 7px; padding: 0 10px; }
.header-button:hover, .panel-close:hover { background: #EDF5FF; color: #1478F2; }
.header-button-text { font-size: 14px; font-weight: 700; }
.search-mark { width: 18px; height: 18px; border: 2px solid currentColor; border-radius: 50%; position: relative; display: inline-block; }
.search-mark::after { content: ""; position: absolute; width: 7px; height: 2px; right: -5px; bottom: -2px; background: currentColor; transform: rotate(45deg); border-radius: 2px; }
.grid-mark { width: 20px; height: 20px; display: grid; grid-template-columns: repeat(3, 4px); grid-auto-rows: 4px; gap: 4px; place-content: center; }
.grid-mark i { display: block; width: 4px; height: 4px; border-radius: 1px; background: currentColor; }
.mobile-header { display: none; height: 64px; align-items: center; justify-content: space-between; }
.mobile-brand { display: flex; justify-content: center; flex: 1; min-width: 0; padding: 0 8px; }
.mobile-brand img { max-width: 170px; height: 38px; object-fit: contain; }
.mobile-brand span { display: flex; flex-direction: column; text-align: center; line-height: 1; color: #1478F2; }
.mobile-brand strong { font-size: 16px; }
.mobile-brand small { margin-top: 4px; font-size: 8px; letter-spacing: .13em; }

.site-main { min-height: 60vh; }
.site-overlay { position: fixed; inset: 72px 0 0; z-index: 1290; background: rgba(7,23,44,.42); opacity: 0; visibility: hidden; pointer-events: none; transition: .2s ease; }
.site-overlay.is-open { opacity: 1; visibility: visible; pointer-events: auto; }
.explore-panel, .search-panel { position: fixed; left: 0; right: 0; top: 72px; z-index: 1300; max-height: 85vh; overflow: auto; background: #fff; border-top: 1px solid rgba(20,40,70,.08); box-shadow: 0 16px 44px rgba(20,120,242,.14); opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(-10px); transition: .22s ease; }
.explore-panel.is-open, .search-panel.is-open { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); }
.panel-head, .search-top { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.panel-head { padding-top: 22px; }
.panel-brand { display: flex; align-items: center; gap: 18px; color: #17243A; }
.panel-brand img { max-width: 180px; height: 42px; object-fit: contain; }
.panel-close { border: 1px solid rgba(20,120,242,.12); padding: 0 14px; }
.explore-groups { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; padding-top: 20px; padding-bottom: 30px; }
.explore-groups section { min-width: 0; }
.explore-groups h2 { margin: 0 0 10px; font-size: 13px; color: #1478F2; letter-spacing: .08em; }
.explore-groups a { display: block; padding: 12px 2px; border-top: 1px solid rgba(20,40,70,.08); }
.explore-groups a strong { display: block; color: #17243A; font-size: 15px; }
.explore-groups a span { display: block; margin-top: 4px; color: #6E7988; font-size: 12px; line-height: 1.5; }
.explore-groups a:hover strong { color: #1478F2; }
.search-inner { padding-top: 26px; padding-bottom: 36px; }
.search-top h2 { margin: 2px 0; color: #17243A; font-size: 32px; }
.kicker { color: #1478F2; font-size: 12px; font-weight: 800; letter-spacing: .16em; }
.search-box { display: block; margin: 24px 0 14px; }
.search-box input { width: 100%; height: 58px; padding: 0 18px; border: 1px solid rgba(20,120,242,.18); border-radius: 14px; outline: none; background: #F7FAFE; color: #17243A; }
.search-box input:focus { border-color: #1478F2; box-shadow: 0 0 0 4px rgba(20,120,242,.10); }
.keyword-row { display: flex; flex-wrap: wrap; gap: 8px; }
.keyword-row button { padding: 8px 12px; border: 1px solid rgba(20,120,242,.12); border-radius: 999px; background: #fff; color: #4E5D72; }
.keyword-row button:hover { background: #EDF5FF; color: #1478F2; }
.search-directory { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; margin-top: 24px; }
.search-directory section { padding: 18px; background: #F7FAFE; border-radius: 14px; }
.search-directory h3 { margin: 0 0 8px; color: #17243A; font-size: 15px; }
.search-directory a { display: block; min-height: 40px; padding: 7px 0; color: #526074; }
.search-directory a:hover { color: #1478F2; }
.search-directory a[hidden] { display: none; }
.search-empty { margin: 20px 0 0; color: #6E7988; }
.panel-open { overflow: hidden; }

.mobile-bottom-nav { display: none; }

.section { padding: 84px 0; }
.section.soft { background: #F7FAFE; }
.section.blue { background: #EDF5FF; }
.section.deep { background: #091E39; color: #E9F3FF; }
.section.deep h2, .section.deep h3, .section.deep strong { color: #fff; }
.section.deep p { color: #C9DAED; }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; margin-bottom: 34px; }
.section-head h2 { margin: 6px 0; color: #17243A; font-size: clamp(30px,4vw,52px); line-height: 1.1; letter-spacing: -.03em; }
.section-head p { max-width: 660px; margin: 0; color: #6E7988; }
.section.deep .section-head h2 { color: #fff; }
.section.deep .kicker { color: #76B5FF; }
.link-arrow { display: inline-flex; align-items: center; min-height: 44px; color: #1478F2; font-weight: 750; }
.link-arrow::after { content: "→"; margin-left: 7px; transition: transform .2s ease; }
.link-arrow:hover::after { transform: translateX(4px); }
.btn-primary, .btn-secondary { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 18px; border-radius: 12px; font-weight: 800; white-space: nowrap; }
.btn-primary { background: linear-gradient(135deg,#43A0FF 0%,#1478F2 56%,#0964CE 100%); color: #fff; box-shadow: 0 16px 44px rgba(20,120,242,.14); }
.btn-primary:hover { filter: brightness(.98); transform: translateY(-1px); }
.btn-secondary { border: 1px solid rgba(20,120,242,.18); background: #fff; color: #1478F2; }
.btn-secondary:hover { background: #EDF5FF; }

.inner-hero { padding: 72px 0 48px; background: linear-gradient(180deg,#F7FAFE,#fff); }
.inner-hero .hero-row { display: grid; grid-template-columns: minmax(0,1.35fr) minmax(260px,.65fr); gap: 54px; align-items: end; }
.inner-hero h1 { margin: 8px 0 18px; color: #17243A; font-size: clamp(40px,6vw,72px); line-height: 1.02; letter-spacing: -.045em; }
.inner-hero p { max-width: 820px; margin: 0; color: #5A687A; font-size: 18px; }
.hero-aside { border-left: 2px solid #DCEBFF; padding-left: 24px; }
.hero-aside strong { display: block; color: #1478F2; font-size: 13px; letter-spacing: .12em; }
.hero-aside p { margin: 6px 0 0; font-size: 14px; }

.prose-grid { display: grid; grid-template-columns: minmax(0,1fr) 320px; gap: 50px; }
.prose { font-size: 17px; }
.prose section { scroll-margin-top: 96px; }
.prose h2 { margin: 42px 0 14px; color: #17243A; font-size: 30px; line-height: 1.2; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 26px 0 10px; color: #17243A; font-size: 22px; }
.prose p { margin: 0 0 18px; }
.side-index { position: sticky; top: 104px; align-self: start; padding: 22px; background: #F7FAFE; border-radius: 16px; }
.side-index h2 { margin: 0 0 10px; color: #17243A; font-size: 16px; }
.side-index a { display: block; padding: 8px 0; border-top: 1px solid rgba(20,40,70,.08); color: #657286; }
.side-index a:first-of-type { border-top: 0; }
.side-index a:hover { color: #1478F2; }

.hero-index { padding: 38px 0 26px; background: linear-gradient(180deg,#F7FAFE,#fff); }
.explore-desk { display: grid; grid-template-columns: 28fr 47fr 25fr; gap: 24px; align-items: stretch; }
.hero-left, .hero-center, .hero-right { overflow: hidden; border: 1px solid rgba(20,120,242,.10); border-radius: 18px; background: #fff; }
.hero-left { display: flex; flex-direction: column; justify-content: space-between; padding: 34px; }
.hero-left h1 { margin: 10px 0 18px; color: #17243A; font-size: clamp(36px,4vw,64px); line-height: 1.02; letter-spacing: -.04em; }
.hero-left p { margin: 0 0 24px; color: #59677A; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.mini-index { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 28px; }
.mini-index a { padding: 13px; border-radius: 12px; background: #F7FAFE; color: #17243A; font-weight: 700; }
.mini-index a span { display: block; color: #99A2AF; font-size: 11px; font-weight: 500; }
.hero-center { min-height: 520px; background: linear-gradient(145deg,#E3F0FF,#F7FAFE 52%,#DCEBFF); }
.hero-center img { display: block; width: 100%; height: 100%; object-fit: contain; }
.hero-visual-fallback { min-height: 520px; padding: 38px; display: flex; flex-direction: column; justify-content: space-between; position: relative; overflow: hidden; }
.hero-visual-fallback::before { content: ""; position: absolute; width: 420px; height: 420px; right: -110px; top: -80px; border: 1px solid rgba(20,120,242,.18); border-radius: 50%; box-shadow: 0 0 0 70px rgba(20,120,242,.035), 0 0 0 140px rgba(20,120,242,.025); }
.hero-visual-fallback strong { position: relative; z-index: 1; color: #1478F2; font-size: clamp(48px,6vw,86px); line-height: .95; letter-spacing: -.05em; }
.hero-visual-fallback span { position: relative; z-index: 1; color: #54769E; font-size: 13px; font-weight: 800; letter-spacing: .16em; }
.hero-right { padding: 22px; }
.hero-right h2 { margin: 4px 0 14px; color: #17243A; font-size: 16px; }
.discover-item { padding: 17px 0; border-top: 1px solid rgba(20,40,70,.08); }
.discover-item:first-of-type { border-top: 0; }
.discover-item strong { display: block; color: #17243A; font-size: 17px; }
.discover-item p { margin: 6px 0; color: #6E7988; font-size: 13px; line-height: 1.6; }
.discover-item a { color: #1478F2; font-size: 13px; font-weight: 750; }

.content-index { border-top: 1px solid rgba(20,40,70,.08); border-bottom: 1px solid rgba(20,40,70,.08); background: #fff; }
.content-index .shell { display: flex; gap: 8px; overflow-x: auto; padding-top: 8px; padding-bottom: 8px; scrollbar-width: none; }
.content-index .shell::-webkit-scrollbar { display: none; }
.content-index a { display: inline-flex; align-items: center; min-height: 42px; padding: 0 12px; white-space: nowrap; color: #586578; font-size: 14px; }
.content-index a::before { content: ""; width: 5px; height: 5px; margin-right: 9px; border-radius: 50%; background: #C9D2DD; }
.content-index a:first-child::before { background: #1478F2; }
.content-index a:hover { color: #1478F2; }

.editorial-grid { display: grid; grid-template-columns: repeat(12,1fr); gap: 18px; }
.editorial-item { grid-column: span 4; padding: 20px 6px 10px; border-top: 3px solid #DCEBFF; }
.editorial-item:nth-child(2), .editorial-item:nth-child(5) { grid-column: span 5; }
.editorial-item:nth-child(3), .editorial-item:nth-child(6) { grid-column: span 3; }
.editorial-number { color: #1478F2; font-size: 46px; font-weight: 900; line-height: 1; letter-spacing: -.05em; }
.editorial-item small { color: #1478F2; font-weight: 800; letter-spacing: .12em; }
.editorial-item h3 { margin: 10px 0; color: #17243A; font-size: 23px; line-height: 1.2; }
.editorial-item p { margin: 0; color: #5E6C7E; }

.map-grid { display: grid; grid-template-columns: repeat(12,1fr); grid-auto-rows: minmax(170px,auto); gap: 16px; }
.map-piece { position: relative; overflow: hidden; padding: 24px; border: 1px solid rgba(20,120,242,.12); border-radius: 16px; background: #fff; }
.map-piece::after { content: ""; position: absolute; right: 18px; top: 18px; width: 8px; height: 8px; border: 2px solid #1478F2; border-radius: 50%; opacity: .55; }
.map-piece h3 { margin: 0 0 10px; color: #17243A; }
.map-piece p { margin: 0; color: #5E6C7E; }
.map-piece.big { grid-column: span 7; grid-row: span 2; background: linear-gradient(145deg,#fff,#EDF5FF); }
.map-piece.big h3 { font-size: 34px; }
.map-piece.wide { grid-column: span 5; }
.map-piece.small { grid-column: span 5; }

.plan-board { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.plan-column { padding: 22px; border-top: 4px solid #DCEBFF; border-radius: 16px; background: #fff; }
.plan-column h3 { margin: 0 0 14px; color: #17243A; font-size: 24px; }
.plan-idea { padding: 14px 0; border-top: 1px solid rgba(20,40,70,.08); }
.plan-idea strong { display: block; color: #17243A; }
.plan-idea p { margin: 5px 0 0; color: #6E7988; font-size: 13px; }

.tag-wall { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.tag-wall a { display: inline-flex; align-items: center; min-height: 48px; padding: 8px 18px; border: 1px solid rgba(20,120,242,.16); border-radius: 999px; background: #fff; color: #17243A; font-weight: 800; }
.tag-wall a:nth-child(3n+1) { padding: 12px 24px; font-size: 24px; }
.tag-wall a:nth-child(4n) { background: #EDF5FF; color: #1478F2; }
.tag-wall a:hover { background: #1478F2; color: #fff; }

.article-list, .qa-grid, .safe-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; }
.guide-item, .qa-item, .safe-list article { padding: 24px; border: 1px solid rgba(20,40,70,.08); border-radius: 16px; background: #fff; }
.guide-item h3, .qa-item h3, .safe-list h3 { margin: 0 0 8px; color: #17243A; font-size: 22px; }
.qa-item p { margin: 0 0 12px; }

.story-feature { display: grid; grid-template-columns: 1.25fr .75fr; gap: 28px; }
.main-story { padding: 36px; border-radius: 18px; background: #EDF5FF; }
.main-story h2 { margin: 8px 0 18px; color: #17243A; font-size: 38px; line-height: 1.15; }
.short-stories { display: grid; gap: 10px; }
.short-stories article { padding: 18px 0; border-bottom: 1px solid rgba(20,40,70,.08); }
.short-stories h3 { margin: 0 0 6px; color: #17243A; font-size: 18px; }

.magazine-wall { columns: 3 280px; column-gap: 18px; }
.magazine-item { break-inside: avoid; margin: 0 0 18px; padding: 22px; border: 1px solid rgba(20,40,70,.08); border-radius: 16px; background: #fff; }
.magazine-item:nth-child(3n+1) { padding-bottom: 40px; }
.magazine-item strong { color: #1478F2; font-size: 12px; letter-spacing: .12em; }
.magazine-item h3 { color: #17243A; font-size: 22px; line-height: 1.25; }

.feature-list { display: grid; gap: 20px; }
.feature-row { display: grid; grid-template-columns: 190px 1fr 220px; gap: 30px; align-items: start; padding: 30px 0; border-top: 1px solid rgba(20,40,70,.08); }
.feature-no { color: #1478F2; font-size: 26px; font-weight: 900; }
.feature-row h3 { margin: 0 0 10px; color: #17243A; font-size: 30px; line-height: 1.15; }
.feature-index { color: #6E7988; font-size: 13px; }

.folder-grid { display: grid; grid-template-columns: repeat(12,1fr); gap: 16px; }
.folder { grid-column: span 4; position: relative; padding: 26px 22px 22px; border: 1px solid rgba(20,120,242,.12); border-radius: 10px 16px 16px 16px; background: #fff; }
.folder::before { content: ""; position: absolute; left: -1px; top: -12px; width: 110px; height: 12px; border: 1px solid rgba(20,120,242,.12); border-bottom: 0; border-radius: 8px 8px 0 0; background: #DCEBFF; }
.folder:nth-child(2), .folder:nth-child(5) { grid-column: span 5; }
.folder:nth-child(3), .folder:nth-child(6) { grid-column: span 3; }
.folder h3 { margin: 0 0 8px; color: #17243A; }

.notice-board { overflow: hidden; border: 1px solid rgba(20,40,70,.08); border-radius: 16px; background: #fff; }
.notice-row { display: grid; grid-template-columns: 140px 1fr 130px; gap: 20px; align-items: center; padding: 20px 24px; border-top: 1px solid rgba(20,40,70,.08); }
.notice-row:first-child { border-top: 0; }
.notice-row span { color: #1478F2; font-size: 12px; font-weight: 800; }
.notice-row h3 { margin: 0; color: #17243A; }
.notice-row p { margin: 4px 0 0; color: #6E7988; font-size: 14px; }

.principles { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.principle { padding: 24px; border-left: 3px solid #1478F2; border-radius: 0 14px 14px 0; background: #fff; }
.principle h3 { margin: 0 0 8px; color: #17243A; }

.app-showcase { display: grid; grid-template-columns: .9fr 1.1fr; gap: 46px; align-items: center; }
.app-image { min-height: 460px; display: flex; align-items: center; justify-content: center; padding: 28px; border-radius: 28px; background: linear-gradient(145deg,#E3F0FF,#fff); }
.app-image img { max-height: 520px; object-fit: contain; }
.phone-fallback { width: 240px; height: 460px; padding: 26px 18px; position: relative; border: 10px solid #17243A; border-radius: 38px; background: #fff; box-shadow: 0 16px 44px rgba(20,120,242,.14); }
.phone-fallback::before { content: ""; position: absolute; left: 50%; top: 10px; width: 74px; height: 8px; transform: translateX(-50%); border-radius: 8px; background: #17243A; }
.phone-fallback strong { display: block; margin-top: 35px; color: #1478F2; font-size: 28px; }
.phone-fallback small { color: #6E7988; }
.app-copy h1 { margin: 8px 0 18px; color: #17243A; font-size: clamp(40px,6vw,72px); line-height: 1.02; letter-spacing: -.045em; }
.app-copy p { font-size: 17px; }
.four-points { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; margin: 24px 0; }
.four-points div { padding: 16px; border-radius: 12px; background: #F7FAFE; }
.four-points strong { display: block; color: #17243A; }

.faq-list details { padding: 18px 0; border-top: 1px solid rgba(20,40,70,.08); }
.faq-list summary { position: relative; cursor: pointer; list-style: none; padding-right: 40px; color: #17243A; font-size: 18px; font-weight: 800; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 4px; top: 0; color: #1478F2; font-size: 24px; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list p { margin: 12px 0 0; color: #5D6A7B; }

.brand-statement { padding: clamp(30px,5vw,70px); border-radius: 22px; background: linear-gradient(135deg,#1478F2,#0765D4); color: #fff; }
.brand-statement h2 { margin: 0 0 22px; font-size: clamp(38px,5vw,68px); line-height: 1.05; }
.brand-statement p { color: #E9F3FF; font-size: 18px; }
.brand-values { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.brand-values span { padding: 8px 12px; border: 1px solid rgba(255,255,255,.28); border-radius: 999px; }

.site-footer { padding: 64px 0 calc(24px + env(safe-area-inset-bottom)); background: #091E39; color: #E9F3FF; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(4,1fr); gap: 38px; }
.footer-grid h2 { margin: 0 0 14px; color: #fff; font-size: 14px; }
.footer-grid a { display: block; padding: 5px 0; color: #C9DAED; font-size: 14px; }
.footer-grid a:hover { color: #fff; }
.footer-brand img { max-width: 200px; height: 44px; object-fit: contain; }
.footer-brand p { max-width: 380px; color: #B8CAE0; font-size: 14px; }
.footer-note { margin-top: 38px; padding: 18px 0; border-top: 1px solid rgba(255,255,255,.10); border-bottom: 1px solid rgba(255,255,255,.10); color: #B8CAE0; font-size: 13px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 18px; color: #9FB3CC; font-size: 12px; }
.footer-bottom a { display: inline; color: #C9DAED; }

:focus-visible { outline: 3px solid rgba(20,120,242,.38); outline-offset: 3px; border-radius: 6px; }

@media (max-width: 1120px) {
  .desktop-nav { gap: 0; }
  .nav-link { padding: 0 8px; font-size: 13px; }
  .header-button-text { display: none; }
  .explore-desk { grid-template-columns: 1fr 1.45fr; }
  .hero-right { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4,1fr); }
  .hero-right h2 { grid-column: 1 / -1; }
  .discover-item { padding: 16px; border-top: 1px solid rgba(20,40,70,.08); }
  .explore-groups { grid-template-columns: repeat(3,1fr); }
  .footer-grid { grid-template-columns: 1.5fr repeat(2,1fr); }
  .footer-brand { grid-row: span 2; }
}

@media (max-width: 900px) {
  .desktop-header { display: none; }
  .mobile-header { display: flex; }
  .site-overlay { inset: 64px 0 0; }
  .explore-panel, .search-panel { top: 64px; bottom: calc(60px + env(safe-area-inset-bottom)); max-height: none; }
  .explore-groups { grid-template-columns: 1fr 1fr; }
  .mobile-bottom-nav { position: fixed; z-index: 1250; left: 0; right: 0; bottom: 0; display: grid; grid-template-columns: repeat(5,1fr); padding-bottom: env(safe-area-inset-bottom); background: rgba(255,255,255,.97); border-top: 1px solid rgba(20,40,70,.10); }
  .mobile-bottom-nav a { min-height: 58px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; color: #6E7988; font-size: 11px; }
  .mobile-bottom-nav a span { font-size: 17px; line-height: 1; }
  .mobile-bottom-nav a.is-active { color: #1478F2; font-weight: 800; }
  .site-footer { padding-bottom: calc(84px + env(safe-area-inset-bottom)); }
  .explore-desk { display: flex; flex-direction: column; }
  .hero-left { order: 1; }
  .hero-center { order: 2; min-height: 0; }
  .hero-right { order: 3; display: block; }
  .hero-visual-fallback { min-height: 360px; }
  .editorial-grid { grid-template-columns: 1fr 1fr; }
  .editorial-item, .editorial-item:nth-child(2), .editorial-item:nth-child(3), .editorial-item:nth-child(5), .editorial-item:nth-child(6) { grid-column: auto; }
  .map-grid { grid-template-columns: 1fr 1fr; }
  .map-piece.big, .map-piece.wide, .map-piece.small { grid-column: auto; grid-row: auto; }
  .plan-board { grid-template-columns: 1fr 1fr; }
  .story-feature, .app-showcase, .prose-grid { grid-template-columns: 1fr; }
  .side-index { position: static; }
  .feature-row { grid-template-columns: 120px 1fr; }
  .feature-index { grid-column: 2; }
  .folder-grid { grid-template-columns: 1fr 1fr; }
  .folder, .folder:nth-child(2), .folder:nth-child(3), .folder:nth-child(5), .folder:nth-child(6) { grid-column: auto; }
  .principles { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; grid-row: auto; }
  .search-directory { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .shell { width: calc(100% - 30px); }
  .section { padding: 60px 0; }
  .section-head { display: block; }
  .section-head h2 { font-size: 34px; }
  .explore-groups { grid-template-columns: 1fr; padding-bottom: 24px; }
  .panel-brand { flex-direction: column; align-items: flex-start; gap: 10px; }
  .panel-brand img { max-width: 145px; height: 36px; }
  .search-directory { grid-template-columns: 1fr; }
  .hero-left { padding: 24px; }
  .hero-left h1 { font-size: 42px; }
  .hero-visual-fallback { min-height: 320px; padding: 24px; }
  .hero-visual-fallback strong { font-size: 56px; }
  .editorial-grid, .map-grid, .plan-board, .article-list, .qa-grid, .safe-list, .principles, .folder-grid { grid-template-columns: 1fr; }
  .feature-row { grid-template-columns: 1fr; gap: 8px; }
  .feature-index { grid-column: auto; }
  .notice-row { grid-template-columns: 1fr; gap: 6px; }
  .four-points { grid-template-columns: 1fr; }
  .inner-hero { padding: 50px 0 34px; }
  .inner-hero .hero-row { grid-template-columns: 1fr; gap: 22px; }
  .hero-aside { display: none; }
  .inner-hero h1, .app-copy h1 { font-size: 42px; }
  .inner-hero p { font-size: 16px; }
  .magazine-wall { columns: 1; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 26px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { display: block; }
  .footer-bottom span { display: block; margin-top: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}


/* Extended editorial components */
.muted { color: #6E7988; }
.text-link, .text-links a { display:inline-flex; align-items:center; min-height:44px; color:#0765D4; font-weight:800; }
.text-link:hover, .text-links a:hover { color:#094D9E; text-decoration:underline; text-underline-offset:4px; }
.tag { display:inline-flex; align-items:center; min-height:28px; padding:4px 9px; border-radius:999px; background:#EDF5FF; color:#0765D4; font-size:12px; font-weight:900; letter-spacing:.04em; }
.blue-wash { background:linear-gradient(180deg,#F7FAFE 0%,#EDF5FF 100%); }
.index-scroll { overflow-x:auto; scrollbar-width:thin; -webkit-overflow-scrolling:touch; }
.map-card { position:relative; min-height:250px; padding:28px; border:1px solid rgba(20,120,242,.12); border-radius:16px; background:#fff; box-shadow:0 14px 38px rgba(35,72,118,.06); overflow:hidden; }
.map-card::after { content:""; position:absolute; right:-30px; bottom:-35px; width:130px; height:130px; border:1px dashed rgba(20,120,242,.22); border-radius:50%; pointer-events:none; }
.map-card-large { grid-column:span 2; min-height:320px; background:linear-gradient(145deg,#fff 35%,#EDF5FF 100%); }
.map-card h2 { margin:14px 0 10px; font-size:26px; color:#17243A; }
.map-card p { color:#3C495D; }
.hobby-wall { display:flex; flex-wrap:wrap; gap:14px; align-items:center; }
.hobby-tag { display:inline-flex; align-items:center; justify-content:center; min-height:52px; padding:12px 22px; border:1px solid rgba(20,120,242,.16); border-radius:999px; background:#fff; color:#17243A; font-weight:900; box-shadow:0 10px 28px rgba(35,72,118,.06); }
.hobby-tag:nth-child(3n+1) { font-size:22px; padding-inline:28px; }
.hobby-tag:nth-child(4n) { background:#E3F0FF; color:#0765D4; }
.hobby-tag:hover { transform:translateY(-2px); border-color:rgba(20,120,242,.34); }
.article-list { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.article-item { display:grid; grid-template-columns:64px 1fr; gap:18px; padding:26px; border:1px solid rgba(20,40,70,.08); border-radius:16px; background:#fff; }
.article-item .number { color:#1478F2; font-size:28px; font-weight:950; line-height:1; }
.article-item h2 { margin:10px 0; font-size:23px; color:#17243A; }
.article-item p { color:#3C495D; }
.qa-grid { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.qa-card { padding:28px; border-radius:16px; background:#fff; border:1px solid rgba(20,120,242,.12); box-shadow:0 14px 38px rgba(35,72,118,.06); }
.qa-card h2 { margin:12px 0; font-size:24px; color:#17243A; }
.qa-card p { color:#3C495D; }
.story-main { padding:42px; border-radius:18px; background:#fff; border:1px solid rgba(20,120,242,.12); box-shadow:0 14px 38px rgba(35,72,118,.08); }
.story-main h2 { margin:12px 0 22px; font-size:38px; line-height:1.2; color:#17243A; }
.story-main p { font-size:17px; line-height:2; color:#3C495D; }
.story-note { align-self:start; padding:26px; border-radius:16px; background:#EDF5FF; border:1px solid rgba(20,120,242,.12); color:#3C495D; }
.story-note strong { display:block; color:#0765D4; font-size:18px; margin-bottom:8px; }
.story-grid { display:grid; grid-template-columns:repeat(5,1fr); gap:14px; }
.story-short { min-height:240px; padding:22px; border-radius:14px; background:#fff; border:1px solid rgba(20,40,70,.08); }
.story-short h2 { margin:12px 0; font-size:21px; color:#17243A; }
.story-short p { color:#3C495D; }
.mag-wall { columns:3 280px; column-gap:18px; }
.mag-item { break-inside:avoid; margin:0 0 18px; padding:28px; border-radius:16px; background:#fff; border:1px solid rgba(20,40,70,.08); box-shadow:0 12px 30px rgba(35,72,118,.05); }
.mag-item:nth-child(3n+2) { background:#EDF5FF; }
.mag-no { display:block; color:#1478F2; font-size:34px; font-weight:950; }
.mag-item h2 { margin:8px 0 12px; color:#17243A; font-size:24px; }
.feature-list { display:grid; gap:20px; }
.feature-item { display:grid; grid-template-columns:160px 1fr; gap:28px; padding:34px 0; border-top:1px solid rgba(20,40,70,.10); }
.feature-item:last-child { border-bottom:1px solid rgba(20,40,70,.10); }
.feature-no { color:#1478F2; font-size:27px; font-weight:950; letter-spacing:-.02em; }
.feature-item h2 { margin:8px 0 12px; color:#17243A; font-size:30px; }
.feature-item p { max-width:900px; color:#3C495D; }
.folder-tab { display:inline-block; color:#0765D4; font-weight:950; font-size:12px; letter-spacing:.08em; margin-bottom:12px; }
.notice-status { display:inline-flex; justify-self:start; align-items:center; min-height:30px; padding:5px 10px; border-radius:8px; background:#EDF5FF; color:#0765D4; font-size:12px; font-weight:900; }
.principle-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.principle-grid article { padding:24px; border-radius:14px; background:#fff; border:1px solid rgba(20,40,70,.08); }
.principle-grid h2 { margin:12px 0 8px; font-size:21px; color:#17243A; }
.principle-grid p { color:#3C495D; }
.app-media { display:flex; align-items:center; justify-content:center; min-height:460px; }
.phone-mock { width:min(310px,82vw); aspect-ratio:9/17.5; border:8px solid #091E39; border-radius:38px; padding:58px 24px 24px; background:linear-gradient(180deg,#fff,#EDF5FF); box-shadow:0 26px 70px rgba(9,30,57,.16); position:relative; display:flex; flex-direction:column; align-items:center; gap:12px; }
.phone-notch { position:absolute; top:14px; width:94px; height:22px; border-radius:99px; background:#091E39; }
.phone-mock strong { margin-top:20px; color:#1478F2; font-size:28px; }
.phone-mock span { color:#6E7988; }
.phone-lines { width:100%; display:grid; gap:12px; margin-top:24px; }
.phone-lines i { display:block; height:70px; border-radius:14px; background:#fff; border:1px solid rgba(20,120,242,.12); }
.app-mini { display:grid; grid-template-columns:1fr 1fr; gap:12px; margin:24px 0; }
.app-mini div { padding:16px; border-radius:12px; background:#fff; border:1px solid rgba(20,120,242,.12); }
.app-mini b, .app-mini span { display:block; }
.app-mini b { color:#17243A; }
.app-mini span { margin-top:3px; color:#6E7988; font-size:13px; }
.faq-wrap { max-width:980px; }
.faq-item { border-top:1px solid rgba(20,40,70,.10); background:#fff; }
.faq-item:last-child { border-bottom:1px solid rgba(20,40,70,.10); }
.faq-item summary { cursor:pointer; list-style:none; min-height:70px; display:flex; align-items:center; padding:18px 8px; color:#17243A; font-size:19px; font-weight:900; }
.faq-item summary::-webkit-details-marker { display:none; }
.faq-item summary::after { content:"＋"; margin-left:auto; color:#1478F2; font-size:22px; }
.faq-item[open] summary::after { content:"－"; }
.faq-item div { padding:0 8px 24px; }
.faq-item p { max-width:860px; color:#3C495D; }
@media (max-width:1120px) {
  .story-grid { grid-template-columns:repeat(3,1fr); }
  .principle-grid { grid-template-columns:1fr 1fr; }
}
@media (max-width:900px) {
  .map-card-large { grid-column:auto; }
  .article-list, .qa-grid { grid-template-columns:1fr; }
  .story-grid { grid-template-columns:1fr 1fr; }
  .feature-item { grid-template-columns:120px 1fr; }
}
@media (max-width:640px) {
  .article-item { grid-template-columns:1fr; }
  .article-item .number { font-size:22px; }
  .story-main { padding:26px; }
  .story-main h2 { font-size:30px; }
  .story-grid, .principle-grid { grid-template-columns:1fr; }
  .mag-wall { columns:1; }
  .feature-item { grid-template-columns:1fr; gap:8px; }
  .app-mini { grid-template-columns:1fr; }
}