:root{--ink:#273b30;--paper:#f7f4eb;--tint:#eae9dc;--accent:#486d55;--secondary:#af987b;--body:'Noto Sans JP',sans-serif;--display:'Shippori Mincho',serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body)}a{color:inherit;text-decoration:none}button{font:inherit}.header{height:82px;padding:0 6%;display:flex;justify-content:space-between;align-items:center;background:var(--paper);position:relative;z-index:2}.brand{display:flex;gap:11px;align-items:center;font-family:var(--display);font-weight:700;font-size:17px;white-space:nowrap}.brand small{display:block;font:700 8px 'DM Sans';letter-spacing:.15em;color:var(--secondary);margin-top:3px}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border:1px solid var(--accent);border-radius:50%;color:var(--accent);font:700 18px 'DM Sans'}nav{display:flex;gap:29px;align-items:center;font-size:12px;font-weight:700}.nav-contact{border:1px solid var(--accent);padding:13px 18px}.hero{height:min(760px,calc(100svh - 82px));min-height:600px;position:relative;display:flex;align-items:center;overflow:hidden}.hero-photo{position:absolute;inset:0;background:linear-gradient(90deg,rgba(247,244,235,.96) 0%,rgba(247,244,235,.77) 32%,rgba(247,244,235,.04) 75%),url('hero.png') center/cover}.hero-copy{position:relative;margin-left:9%;max-width:52%;z-index:1}.eyebrow{font:700 10px 'DM Sans';letter-spacing:.19em;color:var(--accent);margin:0 0 22px}.hero h1{font:700 clamp(35px,4.4vw,67px)/1.55 var(--display);letter-spacing:.02em;margin:0}.hero-description{font-size:14px;line-height:2.2;margin:25px 0;color:var(--ink)}.button{display:inline-flex;justify-content:space-between;align-items:center;gap:35px;min-width:205px;background:var(--accent);color:white;border:0;padding:17px 21px;font-size:13px;font-weight:700;cursor:pointer;transition:opacity .2s}.button:hover{opacity:.8}.hero-side{position:absolute;right:3%;top:50%;writing-mode:vertical-rl;font:700 10px 'DM Sans';letter-spacing:.2em;color:white}.scroll-label{position:absolute;bottom:28px;left:9%;font:700 9px 'DM Sans';letter-spacing:.18em;color:var(--accent)}.intro{text-align:center;padding:120px 7%;max-width:900px;margin:auto}.intro h2,.section-head h2,.profile h2,.contact h2{font:700 clamp(29px,3.5vw,50px)/1.6 var(--display);letter-spacing:.03em;margin:0}.intro>p:last-child{font-size:14px;line-height:2.1;color:#777c6f;max-width:37em;margin:27px auto 0}.section{padding:120px 8%;max-width:1500px;margin:auto}.videos{background:var(--tint);max-width:none}.videos>.section-head,.videos>.categories,.videos>.video-grid,.videos>.note{max-width:1260px;margin-left:auto;margin-right:auto}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:45px}.section-head>p,.profile-copy>p:not(.eyebrow),.contact p{font-size:14px;line-height:2;color:#72796c;max-width:30em}.categories{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#c9cfc4;margin-bottom:46px!important}.category{display:flex;gap:12px;align-items:center;background:var(--paper);padding:20px;font-size:14px;font-weight:700}.category small{font:700 9px 'DM Sans';letter-spacing:.1em;color:var(--secondary)}.category b{margin-left:auto;color:var(--accent)}.video-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}.video-card{border:0;padding:0;background:none;text-align:left;cursor:pointer;color:inherit}.thumbnail{display:block;position:relative;aspect-ratio:16/9;overflow:hidden;background:#ddd}.thumbnail img{width:100%;height:100%;object-fit:cover;transition:transform .4s}.video-card:nth-child(2) .thumbnail img{object-position:right;transform:scale(1.15)}.video-card:hover img{transform:scale(1.04)}.thumbnail-shade{position:absolute;inset:0;background:linear-gradient(90deg,#0004,transparent)}.thumbnail-label{position:absolute;left:5%;bottom:8%;color:white;font-weight:700;font-size:14px}.play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);display:grid;place-items:center;border:1px solid white;border-radius:50%;width:58px;height:58px;background:#0007;color:white;padding-left:3px;font-size:13px}.video-kicker{display:block;font-size:11px;color:var(--accent);margin:18px 0 8px;font-weight:700}.video-kicker span{font:600 10px 'DM Sans';letter-spacing:.1em;color:var(--secondary)}.video-card strong{font:700 17px/1.7 var(--display)}.note{font-size:12px;color:#8b9385;margin-top:28px}.profile{display:grid;grid-template-columns:1fr 1fr}.profile-image{min-height:540px}.profile-image img{width:100%;height:100%;object-fit:cover}.profile-copy{padding:95px 12%;align-self:center}.profile-copy>p:not(.eyebrow){margin-top:26px}.text-link{display:inline-block;border-bottom:1px solid var(--accent);padding-bottom:10px;margin-top:25px;font-size:13px;font-weight:700}.text-link span{margin-left:35px}.social-list{border-top:1px solid #cbd2c5}.social-list>div{display:grid;grid-template-columns:1fr 1fr auto;gap:15px;align-items:center;border-bottom:1px solid #cbd2c5;padding:24px 0}.social-list strong{font:500 26px 'DM Sans'}.social-list span,.social-list small{font-size:12px;color:#899184}.contact{background:var(--ink);color:white;padding:82px 8%;display:flex;justify-content:space-between;align-items:center;gap:30px}.contact .eyebrow{color:#cad6c3}.contact p{color:#d8e0d3}.light-button{background:var(--paper);color:var(--ink)}footer{display:flex;align-items:center;gap:30px;padding:42px 8%;font-size:11px;color:#899184}footer p{margin-left:auto}footer .brand{color:var(--ink)}dialog{max-width:min(90vw,500px);border:0;padding:48px;background:var(--paper);color:var(--ink)}dialog::backdrop{background:#1b211bb8}dialog h2{font:700 23px/1.6 var(--display)}dialog>p:not(.eyebrow){font-size:14px;line-height:2;color:#788072}.dialog-close{position:absolute;top:10px;right:15px;border:0;background:none;font-size:28px;cursor:pointer}.close-action{margin-top:14px}
/* ジャンルごとの色とレイアウト */
.beauty{--ink:#4d4040;--paper:#fbf7f5;--tint:#f3e9e7;--accent:#b77f81;--secondary:#c4a9a3}.beauty .hero-photo{background:linear-gradient(90deg,#fbf7f5f2 0%,#fbf7f5b8 35%,#fbf7f510 75%),url('hero.png') center/cover}.beauty .hero h1{font-weight:500;letter-spacing:.07em}.beauty .brand-mark{border-radius:0;transform:rotate(45deg)}.beauty .thumbnail{border-radius:50% 50% 0 0}.beauty .categories{background:none;gap:12px}.beauty .category{background:#fffaf9;border:1px solid #eadbd9}
.fitness{--ink:#183d5b;--paper:#fffef8;--tint:#fff9cc;--accent:#27649a;--secondary:#c1a82f;--display:'Noto Sans JP',sans-serif}.fitness .hero-photo{background:linear-gradient(90deg,#fffef8f5 0%,#fffef8b0 39%,transparent 78%),url('hero.png') center/cover}.fitness h1,.fitness h2{font-weight:900;letter-spacing:-.03em}.fitness .button,.fitness .nav-contact{border-radius:999px}.fitness .categories{gap:12px;background:none}.fitness .category{border-radius:12px;background:#fff}.fitness .brand-mark{background:#fae665;border:0}.fitness .thumbnail{border-radius:18px}
.travel{--ink:#203b31;--paper:#f7f6f0;--tint:#e7ede6;--accent:#477758;--secondary:#b29976}.travel .hero-photo{background:linear-gradient(90deg,#0c211bd9 0%,#0c211b88 39%,transparent 85%),url('hero.png') center/cover}.travel .hero-copy,.travel .hero-description{color:white}.travel .hero .eyebrow,.travel .scroll-label{color:#d1dfc4}.travel .hero h1{font-family:'Noto Sans JP';font-weight:900;line-height:1.4;letter-spacing:-.02em}.travel .button{background:#f7f6f0;color:#203b31}.travel .hero-side{color:white}.travel .brand-mark{background:#477758;color:white}.travel .profile{background:#e7ede6}
.math{--ink:#143e35;--paper:#f5f8f3;--tint:#e3f0eb;--accent:#377aa5;--secondary:#6e9a90;--display:'Noto Sans JP',sans-serif}.math .hero-photo{background:linear-gradient(90deg,#113e34eb 0%,#113e34b0 42%,transparent 90%),url('hero.png') center/cover}.math .hero-copy,.math .hero-description{color:white}.math .hero .eyebrow,.math .scroll-label{color:#bfe0d7}.math h1,.math h2{font-weight:900;letter-spacing:-.03em}.math .brand-mark{background:#143e35;color:#fff}.math .categories{gap:12px;background:none}.math .category{border:1px solid #b9d5cc}.math .thumbnail{border-radius:10px}
@media(max-width:700px){.header{height:70px;padding:0 5%}.brand{font-size:13px;gap:8px}.brand-mark{width:33px;height:33px;font-size:16px}.brand small{font-size:7px}nav{gap:14px;font-size:11px}nav a:nth-child(2),.nav-contact{display:none}.hero{height:740px;min-height:0;max-height:none;display:block}.hero-photo{height:55%;bottom:auto;background:linear-gradient(0deg,var(--paper),transparent 55%),url('hero.png') 65% center/cover}.hero-copy{position:absolute;margin:0;left:6%;right:6%;bottom:92px;max-width:none}.hero h1{font-size:32px;line-height:1.5}.hero-description{font-size:13px;line-height:2;margin:20px 0}.hero-side{display:none}.scroll-label{left:6%;bottom:24px}.intro{padding:80px 6%}.section{padding:80px 6%}.section-head{display:block;margin-bottom:32px}.section-head>p{margin-top:20px}.categories{grid-template-columns:1fr;gap:1px}.category{padding:16px}.video-grid{grid-template-columns:1fr;gap:35px}.profile{grid-template-columns:1fr}.profile-image{min-height:0;height:300px}.profile-copy{padding:70px 6%}.social-list>div{grid-template-columns:1fr auto}.social-list>div span{display:none}.contact{display:block;padding:70px 6%}.contact .button{margin-top:15px}footer{padding:36px 6%;flex-wrap:wrap}footer>a:last-child{width:100%}footer p{margin-left:auto}.beauty .hero-photo,.fitness .hero-photo{height:55%;background:linear-gradient(0deg,var(--paper),transparent 55%),url('hero.png') 68% center/cover}.travel .hero,.math .hero{background:var(--ink)}.travel .hero-photo,.math .hero-photo{height:100%;background:linear-gradient(0deg,var(--ink) 12%,#123e3470 55%,transparent 100%),url('hero.png') 64% top/auto 60% no-repeat}.travel .hero-copy,.math .hero-copy{color:white}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button,.thumbnail img{transition:none}}
.categories{grid-template-columns:repeat(4,1fr)}.category{border:0;text-align:left;color:var(--ink);cursor:pointer}.category[aria-pressed=true]{box-shadow:inset 0 -3px var(--accent)}.video-card[hidden]{display:none}@media(max-width:700px){.categories{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.beauty .hero h1{font-size:clamp(24px,6.5vw,28px);letter-spacing:.01em}.travel .hero-photo{background-position:center,82% top}}
.brand .channel-avatar{display:block;width:42px;height:42px;border-radius:50%;object-fit:cover;flex:0 0 42px}.brand{gap:12px}@media(max-width:700px){.brand .channel-avatar{width:36px;height:36px;flex-basis:36px}}

/* video-sprite-grid */
.video-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:32px 20px}.video-grid .thumbnail,.video-grid .thumb{aspect-ratio:var(--tile-ratio,1);position:relative;overflow:hidden}.video-sprite{position:absolute;inset:0;display:block;background-image:url("video-grid.png");background-size:400% 500%;background-repeat:no-repeat}.video-card .video-kicker{display:block;margin:12px 0 6px;font-size:10px;letter-spacing:.04em;opacity:.7}.video-card strong{font-size:15px;line-height:1.6}.video-card[hidden]{display:none!important}@media(max-width:700px){.video-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 14px}.video-card strong{font-size:13px}}