:root{--black: #030604;--black-raised: #080d09;--black-soft: #0d130f;--ink: #e8f0e6;--ink-soft: #b9c5b8;--dim: #6d7d6f;--dim-deep: #425046;--green: #52ff7a;--green-soft: rgba(82, 255, 122, .16);--line: rgba(171, 202, 177, .16);--line-bright: rgba(82, 255, 122, .38);--pad: clamp(22px, 4.2vw, 74px);--mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;--serif: "Bodoni Moda", Georgia, serif;--sans: "Manrope", system-ui, sans-serif;color:var(--ink);background:var(--black);font-family:var(--sans);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}html{min-width:320px;scroll-behavior:smooth;background:var(--black)}body{min-width:320px;min-height:100vh;margin:0;overflow-x:hidden;background:var(--black)}button,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{color:inherit}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,textarea:focus-visible{outline:1px solid var(--green);outline-offset:4px}::selection{color:var(--black);background:var(--green)}.site-shell{position:relative;min-height:100vh;overflow:clip;isolation:isolate}.atmosphere{position:fixed;z-index:-3;inset:0;pointer-events:none;background:radial-gradient(circle at 73% 17%,rgba(52,210,88,.09),transparent 28%),radial-gradient(circle at 12% 5%,rgba(82,255,122,.035),transparent 22%),linear-gradient(180deg,#030604,#040805 46%,#020403)}.grain{position:fixed;z-index:100;inset:-50%;width:200%;height:200%;pointer-events:none;opacity:.035;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.95'/%3E%3C/svg%3E");animation:grain-shift .22s steps(2) infinite}@keyframes grain-shift{0%{transform:translateZ(0)}25%{transform:translate3d(2%,-1%,0)}50%{transform:translate3d(-1%,2%,0)}75%{transform:translate3d(1%,1%,0)}to{transform:translate3d(-2%,-1%,0)}}.site-header{position:relative;z-index:20;display:flex;align-items:center;justify-content:space-between;width:100%;padding:24px var(--pad);border-bottom:1px solid var(--line);font-family:var(--mono);font-size:10px;letter-spacing:.18em}.brand{display:inline-flex;align-items:baseline;font-weight:500;letter-spacing:.26em}.brand>span,.site-footer p span{color:var(--green)}.brand small{margin-left:10px;color:var(--dim);font:inherit;letter-spacing:.14em}.header-meta{display:flex;align-items:center;gap:22px;color:var(--dim)}.header-meta i{color:var(--green);font-style:normal}main{position:relative;z-index:1}.hero{display:flex;flex-direction:column;justify-content:space-between;min-height:min(830px,calc(100svh - 68px));padding:clamp(70px,11vh,126px) var(--pad) clamp(52px,8vh,88px);border-bottom:1px solid var(--line)}.hero-kicker{display:flex;align-items:center;gap:18px;color:var(--dim);font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase}.hero-kicker span{color:var(--green)}.hero-kicker p{margin:0}.hero-title{display:flex;flex-wrap:wrap;align-content:center;max-width:1510px;margin:auto 0;padding:5vh 0;font-family:var(--serif);font-size:clamp(50px,8.2vw,142px);font-weight:780;font-variation-settings:"opsz" 48;line-height:.86;letter-spacing:-.052em;text-transform:uppercase}.title-word-mask{display:inline-flex;overflow:hidden;margin-right:.18em;padding:0 .03em .1em 0}.title-word-mask:nth-child(2),.title-word-mask:last-child{font-style:italic;font-weight:520}.title-word-mask:last-child{color:var(--green);text-shadow:0 0 48px rgba(82,255,122,.12)}.title-word-mask>span{display:inline-block}.hero-bottom{display:grid;grid-template-columns:minmax(280px,610px) 1fr;align-items:end;gap:clamp(36px,7vw,130px)}.hero-bottom>p{max-width:58ch;margin:0;color:var(--ink-soft);font-size:clamp(15px,1.25vw,19px);line-height:1.58}.hero-bottom dl{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin:0;font-family:var(--mono);font-size:9px;letter-spacing:.12em}.hero-bottom dl>div{padding-top:12px;border-top:1px solid var(--line)}.hero-bottom dt{margin-bottom:7px;color:var(--dim)}.hero-bottom dd{margin:0;color:var(--ink)}.lesson-stage{display:flex;align-items:flex-start;gap:12px;max-width:1800px;margin:0 auto;padding:clamp(70px,10vw,146px) var(--pad)}.lesson-stage__main{min-width:0;flex:1}.player-flow{min-width:0;opacity:1}.player-flow.is-hidden{visibility:hidden}.lesson-player{overflow:hidden;border:1px solid rgba(151,181,157,.2);border-radius:2px;background:#010201;box-shadow:0 30px 100px #0000006b}.lesson-player__media{position:relative;aspect-ratio:16 / 9;min-height:320px;overflow:hidden;background:#010201}.lesson-player__media video{display:block;width:100%;height:100%;object-fit:contain;background:#000}.lesson-cover{position:absolute;inset:0;overflow:hidden;background:radial-gradient(circle at 58% 45%,rgba(82,255,122,.1),transparent 24%),linear-gradient(130deg,#050a06,#010201 62%)}.lesson-cover:after{position:absolute;inset:0;content:"";pointer-events:none;background:linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px),linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px);background-size:5px 5px;mix-blend-mode:screen;opacity:.35}.lesson-cover__grid{position:absolute;inset:0;opacity:.42;background-image:linear-gradient(rgba(82,255,122,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(82,255,122,.09) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(circle at 58% 46%,#000,transparent 66%);transform:perspective(650px) rotateX(62deg) scale(1.65) translateY(22%);transform-origin:bottom}.lesson-cover__orbit{position:absolute;top:50%;left:58%;border:1px solid rgba(82,255,122,.16);border-radius:50%;transform:translate(-50%,-50%)}.lesson-cover__orbit:before{position:absolute;top:50%;left:-3px;width:6px;height:6px;border-radius:50%;content:"";background:var(--green);box-shadow:0 0 18px var(--green)}.lesson-cover__orbit--one{width:36%;aspect-ratio:1;animation:orbit-spin 20s linear infinite}.lesson-cover__orbit--two{width:58%;aspect-ratio:1;opacity:.55;animation:orbit-spin 33s linear infinite reverse}@keyframes orbit-spin{to{transform:translate(-50%,-50%) rotate(360deg)}}.lesson-cover__core{position:absolute;top:50%;left:58%;display:grid;width:clamp(86px,10vw,160px);aspect-ratio:1;place-items:center;border:1px solid rgba(82,255,122,.48);border-radius:50%;color:var(--green);background:radial-gradient(circle,#52ff7a1f,#030604d1 63%);box-shadow:0 0 80px #52ff7a1c,inset 0 0 28px #52ff7a14;transform:translate(-50%,-50%)}.lesson-cover__core span{font-family:var(--serif);font-size:clamp(34px,4.2vw,68px);font-style:italic}.lesson-cover__index,.lesson-cover__title,.lesson-cover__kanji{position:absolute;z-index:2}.lesson-cover__index{top:28px;left:30px;color:var(--dim);font-family:var(--mono);font-size:9px;letter-spacing:.2em}.lesson-cover__title{bottom:clamp(66px,8vw,112px);left:clamp(26px,4vw,62px);display:flex;flex-direction:column;font-family:var(--serif);font-size:clamp(30px,5vw,82px);line-height:.86;letter-spacing:-.04em}.lesson-cover__title strong{color:var(--green);font-style:italic;font-weight:520}.lesson-cover__kanji{top:50%;right:clamp(22px,4vw,56px);color:#52ff7a47;font-family:"Noto Serif JP",serif;font-size:clamp(17px,2vw,28px);line-height:1.7;transform:translateY(-50%)}.play-control{position:absolute;z-index:5;right:clamp(24px,4vw,54px);bottom:30px;display:flex;align-items:center;gap:11px;min-width:128px;padding:12px 15px;border:1px solid var(--line-bright);border-radius:999px;color:var(--green);background:#030604b8;font-family:var(--mono);font-size:9px;letter-spacing:.16em;cursor:pointer;backdrop-filter:blur(14px);transition:color .18s ease,background .18s ease,transform .18s ease}.play-control:hover{color:var(--black);background:var(--green);transform:translateY(-2px)}.premiere-note{position:absolute;z-index:5;right:24px;bottom:84px;max-width:310px;margin:0;padding:10px 12px;border-left:1px solid var(--green);color:var(--ink-soft);background:#030604d1;font-family:var(--mono);font-size:9px;line-height:1.55}.expand-control{position:absolute;z-index:6;top:18px;right:18px;display:grid;width:38px;height:38px;padding:0;place-items:center;border:1px solid var(--line);border-radius:50%;color:var(--ink-soft);background:#030604a3;cursor:pointer;backdrop-filter:blur(12px);transition:border-color .18s ease,color .18s ease}.expand-control:hover{border-color:var(--line-bright);color:var(--green)}.lesson-player__footer{display:flex;min-height:68px;align-items:center;justify-content:space-between;gap:20px;padding:13px 18px;border-top:1px solid var(--line);font-family:var(--mono);font-size:10px;letter-spacing:.06em}.lesson-player__footer>div{display:flex;align-items:center;gap:15px}.lesson-player__footer span{color:var(--green)}.lesson-player__footer p{margin:0;color:var(--ink-soft)}.lesson-player__footer button{padding:8px 0;border:0;color:var(--dim);background:none;font-family:var(--mono);font-size:9px;letter-spacing:.12em;cursor:pointer;transition:color .18s ease}.lesson-player__footer button:hover{color:var(--green)}.player-backdrop{position:fixed;z-index:69;inset:0;border:0;background:#000000d6;cursor:zoom-out;backdrop-filter:blur(18px)}.player-modal{position:fixed;z-index:70;inset:50% auto auto 50%;width:min(92vw,1440px);transform:translate(-50%,-50%);pointer-events:none}.player-modal .lesson-player{pointer-events:auto}.player-modal .lesson-player__media{min-height:0}.cult-side-panel{position:relative;z-index:10;flex:0 0 auto;overflow:hidden;border:1px solid var(--line);border-radius:2px;background:#080d09f5;box-shadow:0 28px 90px #00000052;backdrop-filter:blur(24px)}.cult-side-panel.is-open{border-color:#52ff7a33}.cult-side-panel__sizer,.cult-side-panel__measure{overflow:hidden}.cult-side-panel__measure{min-height:64px}.cult-side-panel__trigger{height:64px;border-bottom:1px solid transparent}.cult-side-panel.is-open .cult-side-panel__trigger{border-bottom-color:var(--line)}.assistant-trigger{display:flex;width:100%;height:64px;align-items:center;justify-content:flex-start;gap:12px;padding:0 20px;border:0;color:var(--green);background:transparent;font-family:var(--mono);font-size:9px;letter-spacing:.16em;white-space:nowrap;cursor:pointer}.cult-side-panel:not(.is-open) .assistant-trigger{justify-content:center;padding:0}.cult-side-panel:not(.is-open) .assistant-trigger span{display:none}.cult-side-panel__body{min-height:546px}.ai-tutor{display:flex;min-height:546px;flex-direction:column;padding:22px 22px 18px}.ai-tutor__head{display:flex;align-items:center;justify-content:space-between;color:var(--green);font-family:var(--mono);font-size:9px;letter-spacing:.16em}.ai-tutor__head i{padding:3px 6px;border:1px solid rgba(82,255,122,.24);color:var(--dim);font-size:8px;font-style:normal}.ai-tutor__intro{max-width:34ch;margin:28px 0 32px;color:var(--ink-soft);font-family:var(--serif);font-size:23px;line-height:1.16}.ai-suggestions{display:flex;flex-direction:column}.ai-suggestions button{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 0;border:0;border-top:1px solid var(--line);color:var(--ink-soft);background:none;font-size:12px;line-height:1.35;text-align:left;cursor:pointer;transition:color .18s ease,padding .18s ease}.ai-suggestions button:last-child{border-bottom:1px solid var(--line)}.ai-suggestions button span{color:var(--dim)}.ai-suggestions button:hover{padding-left:5px;color:var(--green)}.ai-conversation{min-height:250px}.ai-question,.ai-answer{padding:16px 0;border-top:1px solid var(--line)}.ai-question>span,.ai-answer>span{color:var(--dim);font-family:var(--mono);font-size:8px;letter-spacing:.16em}.ai-question p,.ai-answer p{margin:9px 0 0;font-size:13px;line-height:1.6}.ai-question p{color:var(--ink-soft)}.ai-answer{border-top-color:#52ff7a33}.ai-answer>span,.ai-answer p{color:var(--green)}.ai-answer p{color:var(--ink)}.ai-answer button{display:inline-flex;align-items:center;gap:7px;margin-top:14px;padding:7px 0;border:0;border-bottom:1px solid rgba(82,255,122,.28);color:var(--green);background:none;font-family:var(--mono);font-size:8px;letter-spacing:.08em;cursor:pointer}.ai-thinking{display:flex;align-items:center;gap:5px;padding:18px 0;border-top:1px solid var(--line);color:var(--dim)}.ai-thinking span{width:4px;height:4px;border-radius:50%;background:var(--green);animation:thinking 1s ease-in-out infinite}.ai-thinking span:nth-child(2){animation-delay:.12s}.ai-thinking span:nth-child(3){animation-delay:.24s}.ai-thinking em{margin-left:6px;font-family:var(--mono);font-size:8px;font-style:normal;letter-spacing:.1em}@keyframes thinking{50%{opacity:.25;transform:translateY(-3px)}}.ai-composer{margin-top:auto;padding-top:24px}.ai-composer label{display:block;margin-bottom:9px;color:var(--dim);font-family:var(--mono);font-size:8px;letter-spacing:.14em;text-transform:uppercase}.ai-composer>div{display:flex;align-items:flex-end;gap:8px;padding:10px 10px 10px 13px;border:1px solid var(--line);background:#020503b8;transition:border-color .18s ease}.ai-composer>div:focus-within{border-color:#52ff7a6b}.ai-composer textarea{min-width:0;flex:1;resize:none;border:0;outline:0;color:var(--ink);background:transparent;font-size:12px;line-height:1.45}.ai-composer textarea::placeholder{color:var(--dim-deep)}.ai-composer button{display:grid;width:33px;height:33px;flex:0 0 auto;padding:0;place-items:center;border:1px solid var(--line-bright);border-radius:50%;color:var(--black);background:var(--green);cursor:pointer}.ai-composer button:disabled{border-color:var(--line);color:var(--dim);background:var(--black-soft);cursor:default}.panel-scrim{position:fixed;z-index:78;inset:0;border:0;background:#000000b3;backdrop-filter:blur(8px)}.transcript{display:grid;grid-template-columns:minmax(160px,.32fr) minmax(0,1fr);gap:clamp(40px,8vw,150px);padding:clamp(76px,11vw,160px) var(--pad) clamp(110px,14vw,210px);border-top:1px solid var(--line)}.transcript__rail{color:var(--dim);font-family:var(--mono);font-size:9px;letter-spacing:.15em}.transcript__rail p{margin:0 0 8px;color:var(--green)}.transcript__body{max-width:980px}.transcript__heading{display:grid;grid-template-columns:minmax(0,1fr) 210px;align-items:end;gap:40px;margin-bottom:clamp(56px,7vw,96px)}.transcript__heading h2{max-width:650px;margin:0;font-family:var(--serif);font-size:clamp(42px,6vw,82px);font-weight:650;line-height:.95;letter-spacing:-.035em}.transcript__heading p{margin:0;color:var(--dim);font-family:var(--mono);font-size:9px;line-height:1.6;letter-spacing:.08em}.transcript__flow{border-top:1px solid var(--line)}.transcript__flow article{display:grid;grid-template-columns:76px minmax(0,1fr);gap:clamp(22px,4vw,62px);padding:clamp(28px,4vw,52px) 0;border-bottom:1px solid var(--line)}.transcript__flow article>button{align-self:start;padding:4px 0;border:0;color:var(--green);background:none;font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-align:left;cursor:pointer}.transcript__flow h3{margin:0 0 13px;font-family:var(--serif);font-size:clamp(23px,2.3vw,34px);font-weight:600;line-height:1.1}.transcript__flow p{max-width:68ch;margin:0;color:var(--ink-soft);font-size:clamp(15px,1.25vw,18px);line-height:1.74}.site-footer{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:30px;padding:28px var(--pad);border-top:1px solid var(--line);color:var(--dim);font-family:var(--mono);font-size:8px;letter-spacing:.13em}.site-footer p{margin:0;color:var(--ink-soft)}.site-footer a{justify-self:end;transition:color .18s ease}.site-footer a:hover{color:var(--green)}@media(max-width:1100px){.hero{min-height:780px}.hero-bottom{grid-template-columns:1fr;gap:38px}.hero-bottom dl{max-width:720px}.lesson-player__media{min-height:270px}.transcript{grid-template-columns:130px minmax(0,1fr);gap:50px}}@media(max-width:900px){.site-header{padding-top:20px;padding-bottom:20px}.header-meta span{display:none}.hero{min-height:calc(100svh - 61px);padding-top:58px}.hero-title{font-size:clamp(46px,11vw,90px)}.lesson-stage{display:block}.cult-side-panel.is-mobile{position:fixed;z-index:80;right:12px;bottom:12px;left:12px;width:auto!important;max-height:min(82dvh,720px);border-color:#52ff7a3d;border-radius:16px;box-shadow:0 24px 100px #000000b8}.cult-side-panel.is-mobile .assistant-trigger{justify-content:center;padding:0 18px}.cult-side-panel.is-mobile:not(.is-open) .assistant-trigger span{display:inline}.cult-side-panel.is-mobile .cult-side-panel__body{min-height:calc(min(82dvh,720px) - 64px)}.cult-side-panel.is-mobile .ai-tutor{min-height:calc(min(82dvh,720px) - 64px);overflow-y:auto}.transcript{display:block}.transcript__rail{margin-bottom:54px}.transcript__heading{grid-template-columns:1fr;gap:20px}.transcript__heading p{max-width:38ch}}@media(max-width:640px){.brand small{display:none}.hero{min-height:690px;padding-top:42px;padding-bottom:44px}.hero-kicker{align-items:flex-start;font-size:8px;line-height:1.45}.hero-title{padding:4vh 0;font-size:clamp(43px,14.3vw,74px);line-height:.89}.hero-bottom>p{font-size:14px}.hero-bottom dl{grid-template-columns:repeat(2,1fr);gap:20px}.hero-bottom dl>div:last-child{display:none}.lesson-stage{padding-top:64px;padding-bottom:78px}.lesson-player__media{min-height:0}.lesson-cover__index{top:17px;left:17px;font-size:7px}.lesson-cover__orbit,.lesson-cover__core{left:66%}.lesson-cover__orbit--one{width:48%}.lesson-cover__orbit--two{width:74%}.lesson-cover__title{bottom:24px;left:18px;font-size:clamp(26px,10vw,42px)}.lesson-cover__kanji{display:none}.play-control{right:16px;bottom:16px;min-width:auto;padding:10px}.play-control span{display:none}.premiere-note{right:14px;bottom:62px;left:14px}.expand-control{top:12px;right:12px;width:34px;height:34px}.lesson-player__footer{min-height:58px;padding:11px 14px}.lesson-player__footer p{overflow:hidden;max-width:42vw;text-overflow:ellipsis;white-space:nowrap}.lesson-player__footer>button{font-size:0}.lesson-player__footer>button:after{content:"ASK AI ↗";font-size:8px}.transcript__heading h2{font-size:clamp(39px,12vw,60px)}.transcript__flow article{grid-template-columns:57px minmax(0,1fr);gap:18px}.transcript__flow p{font-size:14px;line-height:1.65}.site-footer{grid-template-columns:1fr auto}.site-footer p{display:none}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.grain{display:none}}