:root{--v3-paper:#f0e8d8;--v3-ink:#151515;--v3-red:#8f2636;--v3-teal:#176b70;--v3-gold:#d5a12e;--v3-panel:#171719}
.rsb-header--v3{backdrop-filter:blur(18px);background:rgba(15,15,16,.88)}
.stream-hero--v3{position:relative;min-height:min(82vh,820px);display:flex;align-items:flex-end;overflow:hidden;background:#101012}
.stream-hero__backdrop{position:absolute;inset:0;background:linear-gradient(90deg,#0f0f10 0%,rgba(15,15,16,.87) 34%,rgba(15,15,16,.18) 72%),linear-gradient(0deg,#0f0f10 0%,transparent 52%),var(--stream-hero-image,url('https://i.ytimg.com/vi/L5TENbISDpI/maxresdefault.jpg')) center 30%/cover no-repeat}
.stream-hero__content{position:relative;z-index:1;width:min(1160px,calc(100% - 2rem));margin:0 auto;padding:clamp(7rem,14vw,11rem) 0 4rem}
.stream-hero__content>*{max-width:660px}.stream-hero__label,.v3-kicker{font-family:'Outfit',sans-serif;font-size:.74rem;font-weight:900;letter-spacing:.2em;color:var(--rsb-accent);text-transform:uppercase}
.stream-hero h1{font-family:'Noto Serif JP',serif;font-size:clamp(3.2rem,7vw,6.5rem);line-height:1.02;margin:.55rem 0}
.stream-hero__copy{font-size:clamp(1rem,2vw,1.22rem);color:#eee3d3;line-height:1.8}
.stream-hero__manifesto{margin:2rem 0 0;padding-left:1rem;border-left:3px solid var(--v3-gold);font-family:'Noto Serif JP',serif;font-weight:700;color:#fff;line-height:1.65}
.stream-home{padding-bottom:0}.v3-section{padding:clamp(3.7rem,7vw,6.5rem) 0;border-top:1px solid var(--rsb-line)}
.v3-section--intro{border-top:0}.v3-section--contrast{background:#111113}.v3-section--paper{background:var(--v3-paper);color:var(--v3-ink)}
.v3-section--paper .v3-kicker{color:var(--v3-red)}.v3-section--paper .v3-section-head>p{color:#625c52}
.v3-section-head{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(260px,.7fr);gap:2rem;align-items:end;margin-bottom:2rem}
.v3-section-head--compact{margin-bottom:1.35rem}.v3-section-head h2{font-family:'Noto Serif JP',serif;font-size:clamp(1.8rem,4vw,3.4rem);line-height:1.22;margin:.4rem 0 0}
.v3-section-head>p{margin:0;color:var(--rsb-muted);line-height:1.8;max-width:34rem}
.start-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem}
.start-card{display:flex;flex-direction:column;min-height:210px;padding:1.35rem;border:1px solid var(--rsb-line);border-radius:16px;background:var(--rsb-surface);text-decoration:none;transition:transform .18s ease,border-color .18s ease}
.start-card:hover{transform:translateY(-4px);border-color:rgba(213,161,46,.65)}.start-card>span{font-family:'Outfit',sans-serif;color:var(--v3-gold);font-weight:900;letter-spacing:.1em}.start-card strong{margin:auto 0 .45rem;font-family:'Noto Serif JP',serif;font-size:1.35rem}.start-card p{margin:0;color:var(--rsb-muted);font-size:.9rem;line-height:1.6}
.stream-shelf{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(280px,31%);gap:1rem;overflow-x:auto;overscroll-behavior-inline:contain;scroll-snap-type:inline proximity;padding:.25rem 0 1.2rem;scrollbar-width:thin}
.stream-tile{scroll-snap-align:start;display:block;text-decoration:none}.stream-tile__media{position:relative;overflow:hidden;aspect-ratio:16/9;border-radius:13px;background:var(--rsb-surface);border:1px solid var(--rsb-line)}
.stream-tile__media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease}.stream-tile:hover .stream-tile__media img{transform:scale(1.035)}
.stream-tile__media--editorial{display:grid;place-items:end start;padding:1.2rem;background:linear-gradient(135deg,#171717 0 58%,#8d2838 58% 76%,#f3e8d2 76%)}.stream-tile__media--editorial strong{font-family:'Noto Serif JP',serif;font-size:1.65rem;line-height:1.05}
.stream-tile__media--soon{display:grid;place-items:center;background:#18181b;color:var(--rsb-muted);font-family:'Outfit',sans-serif;letter-spacing:.16em}.stream-tile__body{padding:.75rem .1rem}.stream-tile__body small{color:var(--rsb-accent);font-family:'Outfit',sans-serif;font-weight:800;letter-spacing:.08em}.stream-tile__body h3{margin:.2rem 0;font-size:1rem}.stream-tile__body p{margin:.25rem 0 0;color:var(--rsb-muted);font-size:.85rem;line-height:1.55}
.chapter-feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}.chapter-feature{position:relative;min-height:260px;padding:1.25rem;border-radius:18px;overflow:hidden;border:1px solid var(--rsb-line);background:linear-gradient(180deg,rgba(0,0,0,.08),rgba(0,0,0,.9)),var(--chapter-image) center/cover no-repeat;text-decoration:none;display:flex;flex-direction:column;justify-content:flex-end}
.chapter-feature::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 10%,rgba(10,10,10,.1) 35%,rgba(10,10,10,.92) 100%)}.chapter-feature>*{position:relative;z-index:1}.chapter-feature:hover{border-color:rgba(213,161,46,.75)}
.chapter-time{font-family:'Outfit',sans-serif;color:var(--v3-gold);font-weight:900;font-size:1.15rem}.chapter-feature strong{font-family:'Noto Serif JP',serif;font-size:1.2rem;line-height:1.45;margin-top:.45rem}.chapter-feature small{color:#d9d0c2;margin-top:.5rem}
.stream-person{grid-auto-columns:minmax(190px,22%)}.stream-person .stream-tile__media{aspect-ratio:4/5}.stream-person .stream-tile__media--portrait{background:#19191b}.stream-person .stream-tile__media--portrait img{display:block;width:100%;height:100%;object-fit:cover}.stream-person .stream-tile__media--portrait img[data-fallback="true"]{object-fit:contain;background:#19191b}
.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem}.topic-card{display:flex;min-height:160px;flex-direction:column;padding:1.25rem;border:1px solid rgba(21,21,21,.16);border-radius:16px;background:rgba(255,255,255,.4);text-decoration:none;color:var(--v3-ink)}
.topic-card small{font-family:'Outfit',sans-serif;letter-spacing:.14em;color:var(--v3-red);font-weight:900}.topic-card strong{margin:auto 0 .5rem;font-family:'Outfit',sans-serif;font-size:1.12rem;overflow-wrap:anywhere}.topic-card span{font-size:.82rem;color:#625c52}.topic-card:hover{background:#fff}
.corner-v3-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.corner-v3-card{position:relative;min-height:260px;padding:1.4rem;border:1px solid var(--rsb-line);border-radius:18px;background:linear-gradient(140deg,#161618 0 58%,#722332 58% 72%,#c89a30 72%);text-decoration:none;display:flex;flex-direction:column}
.corner-v3-card small{font-family:'Outfit',sans-serif;color:var(--v3-gold);font-weight:900;letter-spacing:.14em}.corner-v3-card strong{margin:auto 0 .6rem;font-family:'Noto Serif JP',serif;font-size:clamp(1.5rem,3vw,2.3rem)}.corner-v3-card p{margin:0;color:#ddd1c0;line-height:1.65}.corner-v3-card:hover{border-color:rgba(213,161,46,.7)}
.editorial-route{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}.route-card{min-height:190px;padding:1.35rem;border-radius:16px;border:1px solid var(--rsb-line);background:#1b1b1e;text-decoration:none;display:flex;flex-direction:column}.route-card span{font-family:'Outfit',sans-serif;color:var(--v3-gold);font-weight:900}.route-card strong{margin:auto 0 0;font-family:'Noto Serif JP',serif;font-size:1.15rem;line-height:1.5}
.realworld-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}.realworld-card{min-height:250px;padding:1.4rem;border-radius:18px;border:1px solid rgba(21,21,21,.16);background:#fff;text-decoration:none;color:var(--v3-ink);display:flex;flex-direction:column}.realworld-card small{font-family:'Outfit',sans-serif;color:var(--v3-red);font-weight:900;letter-spacing:.14em}.realworld-card strong{margin:auto 0 .5rem;font-family:'Noto Serif JP',serif;font-size:1.55rem}.realworld-card p{margin:0 0 1rem;color:#625c52;line-height:1.65}.realworld-card span{font-weight:700}.realworld-card:hover{box-shadow:0 16px 36px rgba(0,0,0,.12)}
.footer--v3{border-top:0}
@media(max-width:900px){.start-grid,.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.chapter-feature-grid,.editorial-route,.realworld-grid{grid-template-columns:1fr}.corner-v3-grid{grid-template-columns:1fr}.stream-person{grid-auto-columns:minmax(210px,42%)}}
@media(max-width:760px){.rsb-header--v3 .rsb-nav a:not(.btn){display:none}.stream-hero--v3{min-height:72vh}.stream-hero__backdrop{background:linear-gradient(0deg,#0f0f10 0%,rgba(15,15,16,.58) 66%,rgba(15,15,16,.18)),var(--stream-hero-image,url('https://i.ytimg.com/vi/L5TENbISDpI/maxresdefault.jpg')) center/cover no-repeat}.stream-hero__content{padding:7.5rem 0 2.5rem}.stream-hero__manifesto{font-size:.92rem}.v3-section{padding:3.8rem 0}.v3-section-head{grid-template-columns:1fr;gap:.8rem}.v3-section-head h2{font-size:2rem}.v3-section-head>p{font-size:.9rem}.start-grid{grid-template-columns:1fr 1fr;gap:.75rem}.start-card{min-height:170px;padding:1rem}.start-card strong{font-size:1.08rem}.stream-shelf{grid-auto-columns:82%}.stream-person{grid-auto-columns:55%}.topic-grid{grid-template-columns:1fr 1fr;gap:.75rem}.topic-card{min-height:140px;padding:1rem}.chapter-feature{min-height:230px}.realworld-card{min-height:215px}}
@media(max-width:420px){.start-grid,.topic-grid{grid-template-columns:1fr}.stream-person{grid-auto-columns:70%}}
@media(prefers-reduced-motion:reduce){.stream-tile__media img,.start-card{transition:none}.stream-tile:hover .stream-tile__media img,.start-card:hover{transform:none}}