:root{--mirror: #eceef2;--ink: #1c1824;--steel: #b9bfc9;--stage: #231c33;--gel: #8e7cff;--muted: #5e5870;--line: #cfd3db;--f-display: "Big Shoulders Display", "Arial Narrow", sans-serif;--f-mincho: "Zen Old Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;--f-body: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;--f-mono: "IBM Plex Mono", ui-monospace, monospace;--pole-x: clamp(14px, 6vw, 88px);--gutter: calc(var(--pole-x) + clamp(22px, 4vw, 56px));--right: clamp(16px, 5vw, 72px);color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:72px}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}body{margin:0;line-break:strict;background:var(--mirror);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased}.lang-en{line-height:1.65}img{max-width:100%;display:block}a{color:inherit}:focus-visible{outline:2px solid var(--gel);outline-offset:3px;border-radius:2px}.mono{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.02em}.small{font-size:.7rem}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.pole{position:fixed;top:0;bottom:0;left:var(--pole-x);width:clamp(4px,.55vw,9px);background:linear-gradient(90deg,#7d838e,#e9ecf1 38%,#fff 46%,#a3a9b3 70%,#6d737d);z-index:5;pointer-events:none;box-shadow:1px 0 6px #1c18242e}.pole-glint{--p: 0;position:absolute;left:0;right:0;height:22vh;top:calc(var(--p) * 78vh);background:linear-gradient(180deg,transparent,rgba(255,255,255,.95) 50%,transparent);mix-blend-mode:screen}.topbar{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px var(--right) 12px var(--gutter);background:color-mix(in srgb,var(--mirror) 88%,transparent);backdrop-filter:blur(10px)}.wordmark{font-family:var(--f-display);font-weight:700;font-size:1.5rem;letter-spacing:.12em;text-decoration:none;line-height:1;margin:0;display:inline-flex;align-items:baseline;gap:.5em}.wordmark span{font-family:var(--f-mono);font-weight:400;font-size:.62rem;letter-spacing:.08em;color:var(--muted)}.topbar nav{display:flex;align-items:center;gap:clamp(10px,2.2vw,28px);font-size:.86rem}.topbar nav a{text-decoration:none}.topbar nav a:hover{text-decoration:underline;text-underline-offset:4px}.nav-book{background:var(--ink);color:var(--mirror)!important;padding:6px 16px;border-radius:999px;font-weight:700}.nav-book:hover{background:var(--gel);color:var(--ink)!important;text-decoration:none!important}@media(max-width:620px){.topbar nav a:not(.nav-book):not(.nav-lang){display:none}.wordmark span{display:none}}.sec{padding:clamp(72px,12vw,150px) var(--right) clamp(72px,12vw,150px) var(--gutter);position:relative}.sec-label{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:10px;margin:0 0 18px}.sec-label:before{content:"";height:1px;background:var(--steel);width:calc(var(--gutter) - var(--pole-x) - 10px);margin-left:calc((var(--gutter) - var(--pole-x) - 10px) * -1 - 10px)}.sec-title{font-family:var(--f-mincho);font-weight:700;font-size:clamp(1.7rem,4vw,2.9rem);line-height:1.35;margin:0 0 28px;white-space:pre-line;letter-spacing:.02em;word-break:auto-phrase;text-wrap:balance}.lang-en .sec-title{font-family:var(--f-display);font-weight:300;font-size:clamp(2.2rem,5.5vw,4rem);line-height:1.02;letter-spacing:.01em;text-transform:uppercase}.dark{background:var(--stage);color:var(--mirror)}.dark .sec-label{color:var(--steel)}.hero{min-height:calc(100svh - 60px);display:grid;grid-template-columns:auto minmax(0,1fr) minmax(0,.95fr);gap:clamp(20px,4vw,64px);align-items:end;padding:clamp(24px,5vw,60px) var(--right) clamp(40px,7vw,90px) var(--gutter)}.hero-vertical{writing-mode:vertical-rl;font-family:var(--f-mincho);font-weight:700;font-size:clamp(3rem,min(9vw,calc((100svh - 200px) / 5.8)),8rem);line-height:1.08;letter-spacing:.06em;margin:0;align-self:start;display:flex;flex-direction:column;gap:.12em}.hero-vertical span:last-child{margin-inline-start:1.6em;color:transparent;-webkit-text-stroke:1.5px var(--ink)}.lang-en .hero-vertical{writing-mode:vertical-rl;transform:rotate(180deg);font-family:var(--f-display);font-weight:200;text-transform:uppercase;letter-spacing:.02em;font-size:clamp(3.4rem,min(10vw,calc((100svh - 160px) / 5.2)),9rem);line-height:.88}.lang-en .hero-vertical span:last-child{margin-inline-start:0}.hero-copy{align-self:end;max-width:30em}.hero-lead{font-size:clamp(1rem,1.5vw,1.15rem);margin:0 0 28px}.hero-meta{display:grid;grid-template-columns:auto 1fr;gap:4px 18px;margin:0 0 32px}.hero-meta dt{font-family:var(--f-mono);font-size:.72rem;color:var(--muted);letter-spacing:.1em;padding-top:3px}.hero-meta dd{margin:0;font-size:.92rem}.hero-photo{align-self:stretch;position:relative;min-height:420px}.hero-photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:2px}.hero-photo figcaption{position:absolute;left:0;bottom:-26px}.btn{display:inline-flex;align-items:center;gap:10px;border:0;cursor:pointer;background:var(--ink);color:var(--mirror);font:700 .95rem/1 var(--f-body);padding:16px 26px;border-radius:999px;text-decoration:none;transition:background-color .2s,color .2s}.btn:hover{background:var(--gel);color:var(--ink)}.btn .arrow{font-family:var(--f-mono)}.btn[disabled]{opacity:.45;cursor:not-allowed;background:var(--ink);color:var(--mirror)}@media(max-width:860px){.hero{grid-template-columns:auto minmax(0,1fr);grid-template-rows:auto 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dt{font-family:var(--f-mono);font-size:.72rem;color:var(--muted)}.prices dd{margin:0;font-family:var(--f-display);font-weight:700;font-size:1.9rem;letter-spacing:.02em;line-height:1.1}.lessons-note{max-width:40em;font-size:.9rem;color:var(--muted)}.two-col{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(32px,6vw,96px)}@media(max-width:760px){.two-col{grid-template-columns:1fr}}.access-body p{margin:0 0 1em;max-width:32em}.faq details{border-top:1px solid var(--line);padding:16px 0}.faq details:last-child{border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:16px}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";font-family:var(--f-mono);color:var(--muted)}.faq details[open] summary:after{content:"−"}.faq details p{margin:10px 0 0;font-size:.93rem}.prose{max-width:46em}.prose 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label.adm-upload{cursor:pointer;display:inline-flex;color:var(--mirror);font-size:.95rem}.adm label.adm-upload:hover{color:var(--ink)}.adm-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}.adm-gallery figure{margin:0;display:grid;gap:4px}.adm-gallery img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:2px}.adm-menu{border:0;border-top:1px solid var(--line);padding:16px 0 4px;margin:0;display:grid;gap:12px}