/* Original autumn art direction: washi, vermilion, ink, drifting maple leaves. */
#autumn-intro{max-width:none;padding:0;margin:0;height:185svh;position:relative;background:#eee6d6;color:#30241e;isolation:isolate}
.autumn-stage{position:sticky;top:0;height:100svh;min-height:570px;overflow:hidden;background:radial-gradient(ellipse at 28% 42%,#fff9e9 0,#efe7d8 53%,#d6c5ae 100%)}
.autumn-stage:after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.14;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath filter='url(%23n)' opacity='.5' d='M0 0h180v180H0z'/%3E%3C/svg%3E");mix-blend-mode:multiply}
.autumn-sun{position:absolute;width:34vw;max-width:520px;aspect-ratio:1;left:46%;top:12%;border-radius:50%;background:radial-gradient(circle at 38% 30%,#cb5d39,#a32d25);opacity:.13;transform:translateY(calc(var(--autumn-progress,0)*-45px));box-shadow:0 0 70px #bf4c2415}
.autumn-tree{position:absolute;right:-5%;bottom:-7%;width:min(1350px,95vw);height:110%;object-fit:contain;object-position:right bottom;transform-origin:100% 95%;transform:translate(calc((1 - var(--autumn-progress,0))*35px),0) scale(calc(.88 + var(--autumn-progress,0)*.20));opacity:calc(.66 + var(--autumn-progress,0)*.34);filter:drop-shadow(12px 26px 12px #4e29121a);will-change:transform}
.autumn-mist{position:absolute;inset:0;background:linear-gradient(90deg,#f6eddfb8,transparent 75%),linear-gradient(0deg,#eee6d6 0,transparent 24%);pointer-events:none}
.autumn-copy{position:absolute;z-index:2;top:20%;left:max(7vw,24px);width:62%;transform:translateY(calc(var(--autumn-progress,0)*-90px));opacity:clamp(.15,calc(1 - var(--autumn-progress,0)*1.15),1);will-change:transform,opacity}
.autumn-edition{font:11px/1.6 Georgia,serif;letter-spacing:.3em;color:#8f4c38;margin:0 0 26px}
.autumn-copy h2{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:clamp(48px,6.6vw,100px);font-weight:500;letter-spacing:.04em;line-height:1.45;margin:0;color:#38251f;text-shadow:0 2px 35px #fff9e5}
.autumn-copy h2 em{font-style:normal;color:#a92d26}
.autumn-copy p:not(.autumn-edition){font-size:13px;line-height:2.2;letter-spacing:.12em;max-width:380px;color:#5f493f;margin-top:24px}
.autumn-copy .autumn-shortcut{display:inline-flex;gap:30px;border-bottom:1px solid #a77b62;padding:8px 0;margin-top:12px;color:#7b3c2e;text-decoration:none;font-size:12px;font-weight:700;letter-spacing:.1em}
.autumn-vertical{position:absolute;z-index:2;top:16%;right:4%;writing-mode:vertical-rl;font:20px/2 "Yu Mincho",serif;letter-spacing:.5em;color:#754330}
.autumn-seal{position:absolute;left:7vw;bottom:15%;z-index:2;writing-mode:vertical-rl;color:#a42b24;border:2px solid #a42b24;padding:10px 4px;font:20px/1.4 "Yu Mincho",serif;letter-spacing:.25em;transform:rotate(-4deg);opacity:.8}
.autumn-chapter{position:absolute;left:7vw;bottom:24%;z-index:3;max-width:340px;opacity:clamp(0,calc((var(--autumn-progress,0) - .38)*2.8),1);transform:translateY(calc((1 - var(--autumn-progress,0))*25px));pointer-events:none}
.autumn-chapter b{display:block;font:34px/1.6 "Yu Mincho",serif;letter-spacing:.15em;color:#713323}.autumn-chapter p{font-size:12px;line-height:2;color:#6b5043}
.autumn-scroll{position:absolute;bottom:4%;left:50%;transform:translateX(-50%);z-index:4;text-decoration:none;text-align:center;color:#754330;font:9px/2 Georgia,serif;letter-spacing:.3em}.autumn-scroll span{display:block;width:1px;height:37px;background:#9e6b48;margin:12px auto 0}
#autumn-leaves{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:3}
.season-controls{position:fixed;z-index:1010;left:20px;bottom:22px;display:flex;gap:6px;align-items:center;border:1px solid #88664c;background:#211711ee;padding:6px 8px;border-radius:30px;box-shadow:0 5px 20px #0004;max-width:calc(100vw - 32px)}
.season-controls button{appearance:none;border:0;background:transparent;color:#efcf9a;font:11px/1.4 Meiryo,sans-serif;padding:9px;cursor:pointer;white-space:nowrap}.season-controls button[aria-pressed=true]{color:#fff0d6}.season-controls input{width:50px;accent-color:#d9793d;margin:0 7px}.season-controls label{display:flex}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.autumn-note{font-size:10px;color:#bd9b7e;line-height:1.8}.autumn-audio{display:none}
body{background:radial-gradient(ellipse at 85% 14%,#54211966,transparent 30%),#100d0c}header{background:#100d0cf5}.hero h1 em{color:#e59d6c}.eyebrow{color:#d69b68}.hero-card{border-color:#775443;background:linear-gradient(145deg,#302017,#171312)}.notice{background:#271c15;border-color:#664630}.conversion-panel,.metric,.chart-panel,.platform-grid article{border-color:#5e4433;background:#191411}.primary{background:#ac3028}.floating-dojo{background:#ae2c26;border-color:#f3c18c}.floating-dojo:hover{background:#c94a2e}.dojo-button{border-color:#996b40;color:#efc38b}.section-head h2{font-family:"Yu Mincho","Hiragino Mincho ProN",serif}.hero{position:relative}.hero:before{content:"楓";position:absolute;right:0;top:10px;font:190px "Yu Mincho",serif;color:#9c513112;pointer-events:none}
body.motion-paused .autumn-tree,body.motion-paused .autumn-copy{will-change:auto}
@media(min-width:761px){.season-controls{bottom:24px}}
@media(max-width:760px){#autumn-intro{height:155svh}.autumn-stage{min-height:580px}.autumn-copy{top:14%;left:24px;width:calc(100% - 48px)}.autumn-copy h2{font-size:clamp(41px,10vw,66px);line-height:1.6;letter-spacing:.03em}.autumn-copy p:not(.autumn-edition){font-size:11px;max-width:235px}.autumn-edition{font-size:9px;margin-bottom:20px;letter-spacing:.22em}.autumn-tree{width:200%;height:95%;right:-18%;bottom:-7%;opacity:.66}.autumn-sun{width:62vw;top:18%;left:39%}.autumn-mist{background:linear-gradient(180deg,#f8efde55,transparent 70%),linear-gradient(0deg,#eee6d6,transparent 20%)}.autumn-vertical{right:16px;top:57%;font-size:12px;letter-spacing:.3em}.autumn-seal{left:24px;bottom:14%;font-size:15px}.autumn-chapter{left:24px;bottom:29%;max-width:220px}.autumn-chapter b{font-size:28px}.autumn-chapter p{font-size:11px}.season-controls{bottom:86px;left:12px;padding:3px 5px;gap:0}.season-controls button{font-size:10px;padding:8px}.season-controls input{width:38px}.autumn-scroll{bottom:3%}body{padding-bottom:150px}html{scroll-padding-bottom:150px}}
@media(prefers-reduced-motion:reduce){#autumn-intro{height:100svh}.autumn-tree,.autumn-copy,.autumn-chapter{transform:none!important;will-change:auto}.autumn-copy{opacity:1!important}.autumn-chapter{display:none}#autumn-leaves{display:none}.autumn-scroll span{height:20px}}