:root{
  --primary:#2A6172;
  --primary-deep:#173E49;
  --soft:#E9EFF2;
  --ink:#4A4F59;
  --accent:#C98B47;
  --white:#fff;
  --bg:#F6F8F9;
  --line:#D7E0E5;
  --shadow:0 18px 50px rgba(27,55,67,.12);
  --radius:24px;
  --max:1180px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,"Noto Sans JP","Hiragino Sans","Yu Gothic UI",sans-serif;color:var(--ink);background:var(--white);line-height:1.7}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input,textarea,select{font:inherit}
.container{width:min(calc(100% - 40px),var(--max));margin:0 auto}.section{padding:96px 0}.section.soft{background:var(--bg)}.section.deep{background:var(--primary-deep);color:#fff}.kicker{font-size:.78rem;letter-spacing:.18em;font-weight:800;color:var(--accent);text-transform:uppercase}.section-title{font-size:clamp(2.2rem,5vw,4.4rem);line-height:1.05;margin:.35rem 0 0;color:var(--primary-deep);letter-spacing:-.04em}.deep .section-title{color:#fff}.section-head{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:end;margin-bottom:40px}.section-desc{margin:0;color:#6f7780;max-width:540px}.deep .section-desc{color:#d5e0e4}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(14px);border-bottom:1px solid rgba(215,224,229,.7)}.header-inner{height:74px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:baseline;gap:10px;font-weight:900;letter-spacing:-.04em;color:var(--primary-deep)}.brand small{font-size:.68rem;letter-spacing:.14em;color:var(--primary);font-weight:800}.desktop-nav{display:flex;align-items:center;gap:24px;font-size:.8rem;letter-spacing:.1em;font-weight:800}.desktop-nav a{position:relative}.desktop-nav a:after{content:"";position:absolute;left:0;bottom:-9px;width:0;height:2px;background:var(--accent);transition:.2s}.desktop-nav a:hover:after,.desktop-nav a.active:after{width:100%}.menu-button{display:none;border:0;background:transparent;font-size:1.3rem}.mobile-menu{display:none;position:fixed;inset:74px 0 auto 0;z-index:49;background:#fff;border-bottom:1px solid var(--line);padding:18px 24px}.mobile-menu.open{display:grid}.mobile-menu a{padding:12px 0;border-bottom:1px solid #edf1f3;font-weight:800}
.home-hero{min-height:calc(100vh - 74px);position:relative;display:flex;align-items:flex-end;overflow:hidden;background:linear-gradient(135deg,var(--primary-deep),var(--primary));color:#fff}.home-hero-media{position:absolute;inset:0;background-image:linear-gradient(90deg,rgba(15,42,50,.82),rgba(15,42,50,.2)),url('../images/banners/hero.jpg');background-size:cover;background-position:center}.home-hero-media:after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(201,139,71,.28),transparent 30%)}.home-hero-inner{position:relative;z-index:2;padding:110px 0 88px}.hero-overline{font-size:.8rem;letter-spacing:.25em;font-weight:800;color:#f1c68d}.home-hero h1{font-size:clamp(4.6rem,14vw,10rem);line-height:.85;margin:14px 0 12px;letter-spacing:-.07em}.subbrand{letter-spacing:.25em;font-size:.86rem;font-weight:800;opacity:.86}.home-hero-copy{max-width:680px;margin-top:38px;font-size:1.05rem}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.scroll-note{position:absolute;right:26px;bottom:32px;z-index:2;font-size:.68rem;letter-spacing:.2em;writing-mode:vertical-rl;opacity:.75}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:13px 18px;border-radius:999px;font-weight:800;border:1px solid transparent;transition:.2s;cursor:pointer}.btn.primary{background:var(--primary);color:#fff}.btn.light{background:#fff;color:var(--primary-deep)}.btn.outline{border-color:var(--primary);color:var(--primary);background:transparent}.btn.ghost-light{border-color:rgba(255,255,255,.45);color:#fff;background:transparent}.btn:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.1)}
.media-slot{background:linear-gradient(135deg,#dbe8ec,#eef3f5);position:relative;overflow:hidden}.media-slot:before{content:attr(data-placeholder);position:absolute;inset:auto 18px 16px auto;color:rgba(42,97,114,.5);font-size:.68rem;font-weight:900;letter-spacing:.14em}.activity-layout{display:grid;grid-template-columns:1.5fr .8fr;gap:24px}.feature-card,.mini-card,.guide-card,.content-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}.feature-card:hover,.mini-card:hover,.guide-card:hover,.content-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.feature-media{aspect-ratio:8/5;background-image:url('../images/banners/activity.jpg');background-size:cover;background-position:center}.feature-copy{padding:28px}.feature-copy h3,.mini-card h3,.guide-card h3,.content-card h3{color:var(--primary-deep);margin:.25rem 0 .45rem;line-height:1.3}.feature-copy h3{font-size:1.75rem}.card-meta{font-size:.72rem;letter-spacing:.13em;font-weight:800;color:var(--accent)}.more-link{display:inline-flex;gap:8px;margin-top:12px;color:var(--primary);font-weight:800}.mini-stack{display:grid;gap:24px}.mini-card{display:grid;grid-template-columns:42% 1fr;min-height:180px}.mini-media{background-size:cover;background-position:center}.mini-card .copy{padding:22px}.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.info-panel{border-top:3px solid var(--primary);padding-top:18px}.info-panel h3{color:var(--primary-deep);letter-spacing:.08em}.info-row{display:grid;grid-template-columns:110px 1fr;gap:18px;padding:17px 0;border-bottom:1px solid var(--line)}.info-date{font-size:.74rem;letter-spacing:.08em;font-weight:800;color:var(--accent)}
.radio-layout{display:grid;grid-template-columns:1.15fr .85fr;border:1px solid rgba(255,255,255,.15);border-radius:var(--radius);overflow:hidden}.radio-media{min-height:380px;background-image:linear-gradient(45deg,rgba(15,42,50,.25),rgba(15,42,50,.15)),url('../images/banners/sukusasu.jpg');background-size:cover;background-position:center}.episode-panel{padding:46px;display:flex;flex-direction:column;justify-content:center}.episode-panel h3{font-size:2rem;line-height:1.25;margin:.5rem 0}.guide-grid,.content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.guide-media{aspect-ratio:3/2;background-size:cover;background-position:center}.guide-copy,.content-copy{padding:22px}.about-grid{display:grid;grid-template-columns:1.4fr .7fr;gap:24px}.about-main,.about-side{padding:34px;border-radius:var(--radius)}.about-main{background:var(--soft)}.about-side{background:var(--primary-deep);color:#fff}.display-jp{font-size:clamp(2rem,4.6vw,4rem);line-height:1.2;color:var(--primary-deep);letter-spacing:-.04em;margin:0 0 24px}.transparency-strip{grid-column:1/-1;border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:grid;grid-template-columns:auto 1fr auto;gap:24px;align-items:center}.mark{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:var(--primary);color:#fff;font-weight:900}.transparency-strip h4{margin:.15rem 0 .2rem;color:var(--primary-deep);font-size:1.25rem}.transparency-strip p{margin:0;color:#727a82}.ai-panel{background:linear-gradient(135deg,var(--soft),#fff);border:1px solid var(--line);border-radius:32px;padding:34px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px}.ai-character-large{width:92px;height:92px;border-radius:50%;overflow:hidden;background:linear-gradient(135deg,var(--primary),var(--primary-deep));display:grid;place-items:center;color:#fff;font-weight:900}.ai-character-large img{width:100%;height:100%;object-fit:cover}.ai-panel h3{margin:.3rem 0;color:var(--primary-deep);font-size:1.6rem}
.page-hero{padding:86px 0 60px;background:var(--soft);border-bottom:1px solid var(--line)}.page-hero-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:38px;align-items:center}.page-hero h1{font-size:clamp(3.3rem,8vw,7rem);letter-spacing:-.06em;line-height:.95;margin:10px 0 18px;color:var(--primary-deep)}.page-hero-media{aspect-ratio:3/2;border-radius:28px;background-color:#dbe8ec;background-size:cover;background-position:center;box-shadow:var(--shadow)}.page-intro{font-size:1.08rem;max-width:640px}.list-stack{display:grid;gap:18px}.list-card{display:grid;grid-template-columns:180px 1fr auto;gap:24px;align-items:center;padding:22px;border:1px solid var(--line);border-radius:20px;background:#fff}.list-card .thumb{aspect-ratio:3/2;border-radius:14px;background:linear-gradient(135deg,#dfecef,#edf3f5);background-size:cover;background-position:center}.list-card h3{margin:0 0 .3rem;color:var(--primary-deep)}.tag{display:inline-flex;padding:5px 10px;border-radius:999px;background:var(--soft);color:var(--primary);font-size:.72rem;font-weight:800;letter-spacing:.05em}.prose{max-width:780px}.prose h2{color:var(--primary-deep);margin-top:2.2em}.prose h3{color:var(--primary)}.prose blockquote{margin:2em 0;padding:18px 22px;border-left:4px solid var(--accent);background:var(--bg)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.stat{padding:22px;border:1px solid var(--line);border-radius:18px;background:#fff}.stat strong{display:block;font-size:1.8rem;color:var(--primary-deep)}.ledger{width:100%;border-collapse:collapse}.ledger th,.ledger td{text-align:left;padding:14px;border-bottom:1px solid var(--line)}.ledger th{font-size:.75rem;letter-spacing:.08em;color:var(--primary)}.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.contact-card{padding:26px;border:1px solid var(--line);border-radius:22px}.contact-card h3{color:var(--primary-deep);margin-top:0}.dictionary-search{display:grid;grid-template-columns:1fr auto;gap:12px;margin-bottom:24px}.dictionary-search input{border:1px solid var(--line);border-radius:999px;padding:13px 18px;outline:none}.dictionary-index{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.dictionary-index button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 12px;cursor:pointer}.dictionary-term{padding:20px 0;border-bottom:1px solid var(--line)}.dictionary-term h3{margin:0;color:var(--primary-deep)}
.site-footer{background:#102f38;color:#dbe5e8;padding:64px 0 28px}.footer-grid{display:grid;grid-template-columns:1.2fr repeat(3,.8fr);gap:32px}.footer-brand{font-size:2rem;font-weight:900;color:#fff;letter-spacing:-.04em}.footer-title{font-size:.72rem;letter-spacing:.14em;color:#f1c68d;font-weight:800;margin-bottom:10px}.footer-links{display:grid;gap:8px}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;font-size:.74rem;color:#9fb3ba}
.chat-launcher{position:fixed;right:22px;bottom:22px;z-index:80;width:66px;height:66px;border-radius:50%;border:0;background:var(--primary);box-shadow:0 14px 34px rgba(17,62,73,.28);cursor:pointer;overflow:hidden;color:#fff;font-weight:900}.chat-launcher img{width:100%;height:100%;object-fit:cover}.chat-window{position:fixed;right:22px;bottom:100px;width:min(380px,calc(100vw - 28px));height:min(600px,calc(100vh - 130px));z-index:80;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:0 22px 70px rgba(23,62,73,.25);display:none;overflow:hidden}.chat-window.open{display:grid;grid-template-rows:auto 1fr auto}.chat-head{display:grid;grid-template-columns:56px 1fr auto;align-items:center;gap:12px;padding:16px;background:var(--primary-deep);color:#fff}.chat-face{width:56px;height:56px;border-radius:50%;overflow:hidden;background:var(--primary);display:grid;place-items:center;font-weight:900}.chat-face img{width:100%;height:100%;object-fit:cover}.chat-close{border:0;background:transparent;color:#fff;font-size:1.3rem;cursor:pointer}.chat-log{padding:16px;overflow:auto;background:#f7fafb}.bubble{max-width:86%;padding:11px 13px;border-radius:16px;margin:8px 0;white-space:pre-wrap}.bubble.bot{background:#fff;border:1px solid var(--line)}.bubble.user{background:var(--primary);color:#fff;margin-left:auto}.chat-form{display:grid;grid-template-columns:1fr auto;gap:8px;padding:12px;border-top:1px solid var(--line)}.chat-form input{border:1px solid var(--line);border-radius:999px;padding:11px 14px}.chat-form button{border:0;border-radius:999px;background:var(--accent);color:#fff;padding:0 16px;font-weight:800}
.empty-state{padding:28px;border:1px dashed var(--line);border-radius:20px;text-align:center;color:#78828a}
@media(max-width:900px){.desktop-nav{display:none}.menu-button{display:block}.section{padding:72px 0}.section-head,.page-hero-grid,.activity-layout,.radio-layout,.about-grid{grid-template-columns:1fr}.guide-grid,.content-grid{grid-template-columns:1fr 1fr}.info-grid{grid-template-columns:1fr}.page-hero-media{order:-1}.radio-media{min-height:300px}.ai-panel{grid-template-columns:auto 1fr}.ai-panel .btn{grid-column:1/-1}.footer-grid{grid-template-columns:1fr 1fr}.stats-grid{grid-template-columns:1fr 1fr}.list-card{grid-template-columns:120px 1fr}.list-card>.more-link{grid-column:2}.transparency-strip{grid-template-columns:auto 1fr}.transparency-strip .btn{grid-column:1/-1}.contact-grid{grid-template-columns:1fr}}
@media(max-width:620px){.container{width:min(calc(100% - 28px),var(--max))}.home-hero{min-height:78vh}.home-hero-inner{padding:92px 0 60px}.home-hero h1{font-size:4rem}.scroll-note{display:none}.section{padding:58px 0}.section-head{gap:12px;margin-bottom:26px}.section-title{font-size:2.65rem}.guide-grid,.content-grid,.footer-grid,.stats-grid{grid-template-columns:1fr}.mini-card{grid-template-columns:40% 1fr}.info-row{grid-template-columns:86px 1fr}.radio-media{min-height:230px}.episode-panel{padding:28px}.page-hero{padding:52px 0 38px}.page-hero h1{font-size:3.2rem}.list-card{grid-template-columns:1fr}.list-card .thumb{max-width:180px}.list-card>.more-link{grid-column:auto}.transparency-strip{grid-template-columns:1fr}.mark{width:52px;height:52px}.ai-panel{grid-template-columns:1fr}.ai-character-large{width:78px;height:78px}.contact-grid{grid-template-columns:1fr}.chat-window{right:14px;bottom:92px}.chat-launcher{right:14px;bottom:14px}}