:root{--void:#05070e;--night:#090d1a;--night-warm:#15101c;--cool:#7aa6f0;--cool-bright:#b3d0ff;--cool-deep:#2d4a86;--cool-haze:rgba(122,166,240,.16);--warm:#f4b277;--warm-bright:#ffd9a8;--warm-deep:#bd7a37;--warm-haze:rgba(244,178,119,.18);--ink:#f0f4fd;--ink-soft:#c6d1e6;--ink-mid:#9aa8c4;--ink-faint:#6b7a98;--line:rgba(165,190,235,.13);--line-soft:rgba(165,190,235,.06);--glass:linear-gradient(155deg,rgba(28,38,62,.72),rgba(15,21,38,.5));--glass-edge:rgba(150,180,235,.14);--f-en:"Segoe UI",system-ui,-apple-system,sans-serif;--f-serif:"Yu Mincho","游明朝","Hiragino Mincho ProN",serif;--f-jp:"Yu Gothic UI","Yu Gothic","Segoe UI",sans-serif;--f-mono:"Cascadia Code","Consolas",monospace;--rail-w:268px;--ease:cubic-bezier(.22,.61,.36,1);--maxw:740px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--f-jp);color:var(--ink);background:var(--void);min-height:100vh;line-height:1.7;letter-spacing:.012em;overflow-x:hidden;-webkit-font-smoothing:antialiased}.ambient{position:fixed;inset:0;z-index:0;pointer-events:none;background:radial-gradient(115% 75% at 22% -8%,#14213c 0%,transparent 48%),radial-gradient(90% 70% at 80% 112%,rgba(120,74,32,.22) 0%,transparent 55%),linear-gradient(168deg,var(--night) 0%,var(--void) 58%,#06070f 100%)}.grain{position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.5;mix-blend-mode:overlay;background-image:radial-gradient(rgba(255,255,255,.02) 1px,transparent 1px);background-size:3px 3px}.shell{position:relative;z-index:2;display:grid;grid-template-columns:var(--rail-w) 1fr;min-height:100vh}.rail{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;padding:30px 22px;border-right:1px solid var(--line);background:linear-gradient(180deg,#0a0e1a9e,#060810d1);backdrop-filter:blur(9px)}.brand{display:flex;flex-direction:column;gap:14px}.brand-emblem{width:60px;height:60px;display:grid;place-items:center;border-radius:50%;background:radial-gradient(circle at 50% 40%,var(--cool-haze),transparent 66%);border:1px solid rgba(150,180,235,.17)}.brand-emblem svg{width:44px;height:44px;overflow:visible}.brand-emblem .ring{transform-origin:center;animation:em-pulse 6.5s var(--ease) infinite}.brand-emblem .ring2{animation-delay:.9s}.brand-emblem .hook{transform-origin:60px 64px;animation:em-float 4.6s ease-in-out infinite}@keyframes em-pulse{0%,to{opacity:.45}50%{opacity:.95}}@keyframes em-float{0%,to{transform:translateY(0)}50%{transform:translateY(-2px)}}.brand-name{font-family:var(--f-en);font-size:25px;font-weight:700;letter-spacing:.04em;background:linear-gradient(94deg,var(--cool-bright) 10%,var(--warm) 92%);-webkit-background-clip:text;background-clip:text;color:transparent}.brand-sub{font-size:11.5px;color:var(--ink-faint);letter-spacing:.03em;line-height:1.5}.rail-nav{margin-top:30px;display:flex;flex-direction:column;gap:2px;flex:1}.rail-nav button{display:flex;flex-direction:column;gap:2px;width:100%;text-align:left;padding:11px 14px;border:1px solid transparent;border-radius:13px;background:transparent;color:var(--ink-faint);cursor:pointer;font-family:inherit;transition:all .25s var(--ease)}.rail-nav button:hover{color:var(--ink-soft);background:#7896d20d}.rail-nav button .k{font-family:var(--f-en);font-size:10px;letter-spacing:.18em;text-transform:uppercase;opacity:.65}.rail-nav button .t{font-size:13.5px;font-weight:600}.rail-nav button[aria-current=true]{color:var(--ink);background:linear-gradient(96deg,#7aa6f024,#f4b2770d);border-color:#96b4eb33}.rail-nav button[aria-current=true] .k{color:var(--cool-bright);opacity:1}.rail-foot{margin-top:18px;display:flex;align-items:center;gap:8px;font-family:var(--f-en);font-size:10.5px;letter-spacing:.1em;color:var(--ink-faint)}.dot{width:6px;height:6px;border-radius:50%;background:var(--warm);box-shadow:0 0 10px var(--warm)}.stage{position:relative;display:flex;flex-direction:column}.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;padding:20px 46px;border-bottom:1px solid var(--line-soft);background:linear-gradient(180deg,#060810d6,#06081047);backdrop-filter:blur(10px)}.topbar .now{font-family:var(--f-en);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-faint);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.topbar .now b{color:var(--cool-bright);font-weight:600}.prog{display:flex;gap:5px}.prog i{width:20px;height:3px;border-radius:2px;background:var(--line);transition:background .4s var(--ease)}.prog i.on{background:linear-gradient(90deg,var(--cool),var(--warm))}.panels{flex:1;padding:0 46px 90px}.panel{display:none;max-width:var(--maxw);margin:0 auto;padding-top:56px;animation:rise .6s var(--ease)}.panel.active{display:block}@keyframes rise{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}.panel[data-panel=intro]{position:relative}.panel[data-panel=intro]:before{content:"";position:absolute;left:50%;bottom:120px;width:min(680px,100%);height:520px;transform:translate(-50%);z-index:-1;pointer-events:none;background:radial-gradient(50% 50% at 50% 70%,rgba(244,178,119,.13),transparent 72%)}.hero-kicker{display:inline-flex;align-items:center;gap:9px;font-family:var(--f-en);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-mid);margin-bottom:30px}.hero-kicker:before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--cool),transparent)}.flow{position:relative;padding-left:34px}.flow:before{content:"";position:absolute;left:0;top:12px;bottom:14px;width:2px;border-radius:2px;background:linear-gradient(180deg,var(--cool) 0%,var(--cool-deep) 30%,#6c6a6e 56%,var(--warm-deep) 78%,var(--warm) 100%)}.hero-pain{font-family:var(--f-serif);font-weight:500;font-size:clamp(30px,4.5vw,45px);line-height:1.36;letter-spacing:.012em;color:var(--ink);text-wrap:balance}.hero-pain .cold{color:var(--cool-bright)}.scenes{margin:36px 0 0;display:flex;flex-direction:column;gap:14px}.scene{position:relative;padding:18px 22px;border-radius:15px;background:var(--glass);border:1px solid var(--glass-edge);box-shadow:0 18px 40px #00000052,inset 0 1px #ffffff0b;color:var(--ink-soft);font-size:15.5px;line-height:1.8}.scene:before{content:"";position:absolute;left:-34px;top:26px;width:9px;height:9px;border-radius:50%;border:2px solid var(--night);box-shadow:0 0 0 3px #ffffff0a}.scene.s1{background:linear-gradient(155deg,#7aa6f01c,#0f152675);border-color:#7aa6f030}.scene.s1:before{background:var(--cool);box-shadow:0 0 12px #7aa6f080}.scene.s2:before{background:#a08f86}.scene.s3{padding:22px 24px;background:linear-gradient(155deg,#f4b2771c,#16121c80);border-color:#f4b2773d;box-shadow:0 28px 64px #00000075,0 0 46px #f4b2770f,inset 0 1px #ffffff0f}.scene.s3:before{background:var(--warm);box-shadow:0 0 14px #f4b27799}.scene.s3 .em{font-size:16.5px}.scene b{color:var(--ink);font-weight:600}.scene .em{color:var(--warm-bright);font-style:normal;font-weight:600}.turn{margin:42px 0 0;font-size:17.5px;color:var(--ink-soft);line-height:1.9}.turn strong{color:var(--ink);font-weight:600}.release{margin-top:20px;font-family:var(--f-serif);font-size:clamp(21px,2.7vw,29px);line-height:1.55;color:var(--ink)}.release .warm{background:linear-gradient(94deg,var(--warm-bright),var(--warm));-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:600}.release-quiet{display:block;margin-top:14px;font-family:var(--f-jp);font-size:16px;color:var(--ink-mid);font-weight:400}.release-en{display:block;margin-top:16px;font-family:var(--f-en);font-weight:300;font-size:14px;letter-spacing:.18em;color:var(--ink-faint);text-transform:uppercase}.cta{position:relative;margin-top:50px;padding:36px 34px;border-radius:24px;overflow:hidden;background:radial-gradient(130% 150% at 18% 16%,rgba(244,178,119,.13),transparent 56%),linear-gradient(150deg,#1a1e2ee0,#0d101ceb);border:1px solid rgba(244,178,119,.2);box-shadow:0 36px 90px #00000080,0 0 60px #f4b2770f,inset 0 1px #ffffff0d}.cta-ripple{position:absolute;left:71px;top:74px;width:10px;height:10px;pointer-events:none}.cta-ripple i{position:absolute;left:50%;top:50%;width:10px;height:10px;border-radius:50%;border:1px solid var(--warm);transform:translate(-50%,-50%) scale(1);opacity:0}.cta.playing .cta-ripple i{animation:wave 2.6s var(--ease) infinite}.cta.playing .cta-ripple i:nth-child(2){animation-delay:.86s}.cta.playing .cta-ripple i:nth-child(3){animation-delay:1.72s}@keyframes wave{0%{transform:translate(-50%,-50%) scale(1);opacity:.7}to{transform:translate(-50%,-50%) scale(14);opacity:0}}.cta-row{position:relative;display:flex;align-items:center;gap:22px}.cta-play{position:relative;flex-shrink:0;width:74px;height:74px;border-radius:50%;cursor:pointer;border:1px solid rgba(244,178,119,.5);color:#241405;background:radial-gradient(circle at 38% 30%,var(--warm-bright),var(--warm) 72%);box-shadow:0 14px 38px #f4b2775c,inset 0 1px 1px #fff9;display:grid;place-items:center;transition:transform .25s var(--ease),box-shadow .25s var(--ease)}.cta-play:hover{transform:scale(1.05);box-shadow:0 18px 50px #f4b2778c}.cta-play svg{width:26px;height:26px;margin-left:3px}.cta.playing .cta-play{animation:beat 1.25s var(--ease) infinite}@keyframes beat{0%{box-shadow:0 0 #f4b27780}70%{box-shadow:0 0 0 16px #f4b27700}to{box-shadow:0 0 #f4b27700}}.cta-txt{display:flex;flex-direction:column;gap:6px}.cta-lead{font-size:18.5px;font-weight:600;color:var(--ink)}.cta-en{font-family:var(--f-en);font-size:12px;letter-spacing:.16em;color:var(--warm);text-transform:uppercase}.cta-note{position:relative;margin-top:18px;padding-top:16px;border-top:1px solid var(--line-soft);font-size:12px;color:var(--ink-mid);line-height:1.7}.cta-vp{margin-top:15px;font-size:14.5px;line-height:1.85;color:var(--ink-soft)}.cta-vp .w{color:var(--warm-bright);font-weight:600}.pager{display:flex;justify-content:space-between;align-items:center;max-width:var(--maxw);margin:56px auto 0;padding-top:26px;border-top:1px solid var(--line-soft)}.pager button{font-family:var(--f-jp);font-size:14px;color:var(--ink-soft);background:none;border:none;cursor:pointer;display:flex;flex-direction:column;gap:3px;padding:6px 4px;transition:color .2s}.pager button:hover{color:var(--ink)}.pager button .pk{font-family:var(--f-en);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint)}.pager .next{text-align:right}.pager .next .pk{color:var(--warm)}.ch-kicker{display:inline-flex;align-items:center;gap:8px;font-family:var(--f-en);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-mid);margin-bottom:18px}.ch-kicker:before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--accent-c,var(--cool)),transparent)}.ch-title{font-family:var(--f-serif);font-weight:500;font-size:clamp(26px,3.6vw,38px);line-height:1.36;margin-bottom:16px;text-wrap:balance}.ch-lead{font-size:16.5px;color:var(--ink-soft);line-height:1.85;max-width:56ch;margin-bottom:40px}.ch-note{margin-top:34px;font-size:14px;color:var(--ink-mid);line-height:1.8}.cards2{display:grid;grid-template-columns:1fr 1fr;gap:18px}.card2{position:relative;padding:26px 24px;border-radius:18px;overflow:hidden;box-shadow:0 22px 52px #00000057,inset 0 1px #ffffff0a}.card2:before{content:"";position:absolute;inset:0 0 auto;height:2px}.card2.installer{background:linear-gradient(162deg,#7aa6f01f,#0f152685);border:1px solid rgba(122,166,240,.22)}.card2.installer:before{background:linear-gradient(90deg,var(--cool),transparent)}.card2.portable{background:linear-gradient(162deg,#f4b2771a,#14121e85);border:1px solid rgba(244,178,119,.22)}.card2.portable:before{background:linear-gradient(90deg,var(--warm),transparent)}.card2-tag{font-family:var(--f-en);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-mid)}.card2.installer .card2-tag{color:var(--cool-bright)}.card2.portable .card2-tag{color:var(--warm-bright)}.card2 h3{font-family:var(--f-serif);font-weight:500;font-size:22px;margin:11px 0 12px;color:var(--ink)}.card2 p{font-size:14.5px;color:var(--ink-soft);line-height:1.82}.card2 ul{margin:16px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:9px}.card2 li{position:relative;padding-left:18px;font-size:13.5px;color:var(--ink-mid);line-height:1.6}.card2.installer li:before,.card2.portable li:before{content:"";position:absolute;left:0;top:7px;width:5px;height:5px;border-radius:50%}.card2.installer li:before{background:var(--cool)}.card2.portable li:before{background:var(--warm)}@media(max-width:680px){.cards2{grid-template-columns:1fr}}.reveal-turn{margin:18px 0 0;font-family:var(--f-serif);font-size:clamp(19px,2.3vw,24px);line-height:1.5;color:var(--ink)}.dial-group{margin-top:40px}.sub-h{display:flex;align-items:baseline;gap:13px;font-family:var(--f-serif);font-weight:500;font-size:22px;color:var(--ink);margin-bottom:9px;overflow-wrap:anywhere}.sub-h .sub-k{font-family:var(--f-en);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--warm-bright);font-weight:600;white-space:nowrap}.sub-p{font-size:14.5px;color:var(--ink-soft);line-height:1.85;max-width:62ch}.sub-p b{color:var(--ink);font-weight:600}.dial{width:100%;border-collapse:collapse;margin:18px 0 0;border-top:1px solid var(--glass-edge);border-bottom:1px solid var(--glass-edge)}.dial td{padding:13px 4px;font-size:14px;color:var(--ink-soft);line-height:1.65;vertical-align:top}.dial tr+tr td{border-top:1px solid var(--line-soft)}.dial td:first-child{width:30%;color:var(--ink);font-weight:600;padding-right:18px}.sub-note{margin-top:15px;font-size:13px;color:var(--ink-mid);line-height:1.75}.ch-close{margin-top:44px;padding:22px 26px;border-radius:16px;font-size:15px;color:var(--ink-soft);line-height:1.85;border:1px solid rgba(244,178,119,.2);background:radial-gradient(130% 150% at 18% 16%,rgba(244,178,119,.1),transparent 56%),linear-gradient(150deg,#1a1e2ed1,#0d101ce6)}.ch-close b{color:var(--warm-bright);font-weight:600}.split2{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:30px 0 0}.split2 .half{padding:22px 24px;border-radius:16px;box-shadow:0 18px 44px #0000004d,inset 0 1px #ffffff0a}.split2 .half .t{display:block;font-family:var(--f-en);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-mid);margin-bottom:9px}.split2 .half h3{font-family:var(--f-serif);font-weight:500;font-size:21px;color:var(--ink)}.split2 .cool{background:linear-gradient(160deg,#7aa6f01f,#0f152680);border:1px solid rgba(122,166,240,.22)}.split2 .cool .t{color:var(--cool-bright)}.split2 .warm{background:linear-gradient(160deg,#f4b2771c,#14121e80);border:1px solid rgba(244,178,119,.22)}.split2 .warm .t{color:var(--warm-bright)}.reveal-none{margin-top:30px;font-size:14.5px;color:var(--ink-mid);line-height:1.9}.reveal-none b{color:var(--ink);font-weight:600}@media(max-width:680px){.split2{grid-template-columns:1fr}}.demo{display:grid;grid-template-columns:1fr auto 1fr;gap:14px;align-items:stretch;margin:20px 0 6px}.demo .side{padding:16px 18px;border-radius:13px}.demo .write{background:linear-gradient(160deg,#7aa6f01a,#0f152670);border:1px solid rgba(122,166,240,.2)}.demo .say{background:linear-gradient(160deg,#f4b2771c,#14121e75);border:1px solid rgba(244,178,119,.22)}.demo .lbl{display:block;font-family:var(--f-en);font-size:10px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:8px}.demo .write .lbl{color:var(--cool-bright)}.demo .say .lbl{color:var(--warm-bright)}.demo .write p{font-size:13.5px;color:var(--ink-soft);line-height:1.7}.demo .write b{color:var(--ink);font-weight:600}.demo .say p{font-size:14px;color:var(--warm-bright);line-height:1.72;font-weight:500}.demo .mid{display:grid;place-items:center;color:var(--warm);font-size:20px}@media(max-width:680px){.demo{grid-template-columns:1fr}.demo .mid{transform:rotate(90deg);padding:3px 0}}.adjust{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0 0}.adj{display:flex;gap:12px;padding:15px 16px;border-radius:13px;background:linear-gradient(160deg,#141b2e75,#0c101c66);border:1px solid var(--line)}.adj .ic{flex-shrink:0;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:#7aa6f01a;border:1px solid rgba(122,166,240,.2);color:var(--cool-bright)}.adj .ic svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.adj p{font-size:13.5px;color:var(--ink-soft);line-height:1.6}.adj p b{color:var(--ink);font-weight:600}.adj .nm{display:block;font-size:11px;color:var(--ink-mid);margin-top:3px}@media(max-width:680px){.adjust{grid-template-columns:1fr}}.adj-cat{margin:24px 0 0;font-family:var(--f-en);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--warm-bright);font-weight:600}.part-h{margin:42px 0 4px;padding-top:20px;border-top:1px solid var(--line-soft);display:flex;align-items:baseline;gap:12px}.part-h .pn{font-family:var(--f-en);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--warm-bright);font-weight:600;white-space:nowrap}.part-h h3{font-family:var(--f-serif);font-weight:500;font-size:21px;color:var(--ink)}.part-lead{font-size:14px;color:var(--ink-mid);line-height:1.78;margin:8px 0 0;max-width:60ch}.cases{display:flex;flex-direction:column;gap:13px;margin:6px 0 0}.case{display:flex;gap:16px;padding:19px 22px;border-radius:16px;background:var(--glass);border:1px solid var(--glass-edge);box-shadow:0 16px 40px #00000047}.case .ic{flex-shrink:0;width:44px;height:44px;border-radius:13px;display:grid;place-items:center;background:#7aa6f01a;border:1px solid rgba(122,166,240,.2);color:var(--cool-bright)}.case .ic svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.case .sk{display:block;font-family:var(--f-en);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--cool-bright);margin-bottom:5px}.case h4{font-family:var(--f-jp);font-weight:600;font-size:16px;color:var(--ink);margin-bottom:6px}.case p{font-size:14px;color:var(--ink-soft);line-height:1.78}.case p b{color:var(--ink);font-weight:600}.warn-box{position:relative;margin:0 0 26px;padding:22px 24px 20px 28px;border-radius:16px;background:linear-gradient(155deg,#d9b1701c,#14100b66);border:1px solid rgba(217,177,112,.24);box-shadow:0 18px 46px #0000004d}.warn-box:before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;background:linear-gradient(180deg,var(--warm),var(--warm-deep))}.warn-box h3{font-family:var(--f-jp);font-weight:600;font-size:16.5px;color:var(--ink);margin-bottom:9px}.warn-box>p{font-size:14.5px;color:var(--ink-soft);line-height:1.82}.steps{margin:18px 0 0;padding:0;list-style:none;counter-reset:s;display:flex;flex-direction:column;gap:13px}.steps li{position:relative;padding-left:40px;font-size:14.5px;color:var(--ink-soft);line-height:1.7;counter-increment:s}.steps li:before{content:counter(s);position:absolute;left:0;top:-3px;width:27px;height:27px;border-radius:50%;display:grid;place-items:center;font-family:var(--f-en);font-size:13px;font-weight:600;color:var(--warm-bright);background:#d9b17021;border:1px solid rgba(217,177,112,.32)}.warn-note{margin-top:15px;font-size:12.5px;color:var(--ink-mid);line-height:1.7}.assent{display:grid;grid-template-columns:1fr 1fr;gap:16px}.assent .a{padding:20px 22px;border-radius:15px;background:var(--glass);border:1px solid var(--glass-edge);box-shadow:0 16px 38px #00000047}.assent .a .t{display:block;font-family:var(--f-en);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-mid);margin-bottom:9px}.assent .a h4{font-family:var(--f-jp);font-weight:600;font-size:15.5px;color:var(--ink);margin-bottom:8px}.assent .a p{font-size:13.5px;color:var(--ink-soft);line-height:1.78}@media(max-width:680px){.assent{grid-template-columns:1fr}}.settings{display:flex;flex-direction:column;border-radius:16px;overflow:hidden;border:1px solid var(--glass-edge);background:linear-gradient(160deg,#141b2e80,#0c101c70)}.setting{display:flex;gap:18px;padding:20px 24px}.setting+.setting{border-top:1px solid var(--line-soft)}.setting .ic{flex-shrink:0;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:#7aa6f01a;border:1px solid rgba(122,166,240,.2);color:var(--cool-bright)}.setting .ic svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.setting .d h4{font-family:var(--f-jp);font-weight:600;font-size:15.5px;color:var(--ink);margin-bottom:5px}.setting .d p{font-size:14px;color:var(--ink-soft);line-height:1.76}.tabs{display:flex;gap:4px;margin-bottom:20px;border-bottom:1px solid var(--line)}.tab-btn{font-family:var(--f-jp);font-size:14px;color:var(--ink-mid);background:none;border:none;cursor:pointer;padding:11px 17px;border-bottom:2px solid transparent;margin-bottom:-1px;transition:color .2s,border-color .2s}.tab-btn:hover{color:var(--ink-soft)}.tab-btn[aria-selected=true]{color:var(--ink);border-bottom-color:var(--cool)}.tab-panel{display:none}.tab-panel.on{display:block;animation:rise .4s var(--ease)}.tab-panel>p{font-size:14.5px;color:var(--ink-soft);line-height:1.8}.code{margin:14px 0 0;padding:18px 20px;border-radius:13px;background:#060912b8;border:1px solid var(--line);font-family:var(--f-mono);font-size:13px;color:var(--ink-soft);line-height:1.75;overflow-x:auto;white-space:pre}.code .k{color:var(--warm-bright)}.code .c{color:var(--ink-faint)}.steps.big{gap:18px}.steps.big li{padding:4px 0 4px 46px;font-size:15.5px;line-height:1.8}.steps.big li:before{width:31px;height:31px;font-size:14px;top:0;color:var(--warm-bright);background:#f4b2771f;border-color:#f4b2774d}.steps.big li b{color:var(--ink);font-weight:600}.faq{display:flex;flex-direction:column;border-radius:16px;overflow:hidden;border:1px solid var(--glass-edge)}.qa{padding:20px 24px;background:linear-gradient(160deg,#12162470,#0b0e1866)}.qa+.qa{border-top:1px solid var(--line-soft)}.qa h4{font-family:var(--f-jp);font-weight:600;font-size:15px;color:var(--ink);margin-bottom:7px;position:relative;padding-left:22px}.qa h4:before{content:"Q";position:absolute;left:0;top:0;font-family:var(--f-en);color:var(--cool-bright);font-weight:700;font-size:14px}.qa p{font-size:14px;color:var(--ink-soft);line-height:1.8;padding-left:22px}.return{margin-top:26px;padding:22px 24px;border-radius:16px;background:radial-gradient(120% 140% at 80% 20%,rgba(244,178,119,.08),transparent 60%),linear-gradient(160deg,#14182680,#0c101a75);border:1px solid var(--glass-edge)}.return h4{font-family:var(--f-serif);font-weight:500;font-size:18px;color:var(--ink);margin-bottom:8px}.return p{font-size:14px;color:var(--ink-soft);line-height:1.8}.stub h2{font-family:var(--f-serif);font-weight:500;font-size:clamp(24px,3.4vw,34px);margin-bottom:14px}.stub .lp{color:var(--ink-soft);font-size:16px;max-width:52ch;line-height:1.85}.stub .tag{display:inline-block;font-family:var(--f-en);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint);border:1px solid var(--line);border-radius:30px;padding:4px 11px;margin-top:24px}:focus-visible{outline:2px solid var(--warm-bright);outline-offset:3px;border-radius:6px}@media(max-width:880px){.shell{grid-template-columns:minmax(0,1fr)}.rail{position:static;height:auto;flex-direction:row;align-items:center;flex-wrap:wrap;gap:14px;padding:18px 20px;border-right:none;border-bottom:1px solid var(--line)}.brand{flex-direction:row;align-items:center;gap:12px}.brand-sub{display:none}.rail-nav{flex-direction:row;overflow-x:auto;gap:6px;margin-top:0;flex:1 1 100%;order:3}.rail-nav button{flex-direction:row;align-items:baseline;gap:7px;white-space:nowrap;padding:10px 12px}.rail-foot{order:2;margin-top:0}.topbar{padding:16px 22px}.panels{padding:0 22px 70px}.flow{padding-left:26px}.scene:before{left:-26px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}