:root{color-scheme:dark;--bg:#101416;--panel:#181e21;--panel-light:#20292d;--text:#f3f6f5;--muted:#b0bdb9;--accent:#9ce6cb;--border:#303b3c;--max:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI","Yu Gothic",Meiryo,sans-serif;line-height:1.8;overflow-wrap:anywhere}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:5px}p{margin:0 0 1em}h1,h2,h3{line-height:1.45;letter-spacing:-.025em;margin:0 0 .65em}h1{font-size:clamp(2rem,4.5vw,3.8rem)}h2{font-size:clamp(1.6rem,3vw,2.5rem)}h3{font-size:1.08rem}ul,ol{padding-left:1.4em}.container{width:calc(100% - 48px);max-width:var(--max);margin-inline:auto}.skip-link{position:fixed;left:16px;top:0;transform:translateY(-150%);background:var(--accent);color:var(--bg);padding:10px 20px;z-index:10}.skip-link:focus{transform:translateY(0)}.site-header{border-bottom:1px solid var(--border);background:var(--bg)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-block:20px}.wordmark{font-size:1.55rem;font-weight:750;letter-spacing:-.04em}.brand-dot{color:var(--accent)}nav{display:flex;gap:24px;flex-wrap:wrap;font-size:.88rem;color:var(--muted)}nav a[aria-current=page]{color:var(--text);text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:8px}.hero{display:grid;grid-template-columns:1.15fr 1fr;align-items:center;gap:64px;padding-block:88px 92px}.hero-brand{font-size:1.3rem;color:var(--accent);font-weight:650;margin-bottom:18px}.hero h1{font-size:clamp(2.5rem,4.5vw,3.8rem);line-height:1.4;letter-spacing:-.055em}.lead{font-size:clamp(1rem,1.5vw,1.2rem);color:var(--muted)}.badges{list-style:none;padding:0;display:flex;gap:8px;flex-wrap:wrap;margin:26px 0}.badges li,.status-pill{font-size:.8rem;border:1px solid var(--border);border-radius:999px;padding:4px 12px}.hero-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap;margin-bottom:12px}.button{display:inline-flex;align-items:center;justify-content:center;gap:14px;padding:14px 22px;border:1px solid var(--border);border-radius:8px;font:inherit;font-size:.95rem;font-weight:650}.download:disabled{background:var(--panel-light);color:#d6dfdc;opacity:1;cursor:not-allowed}.download span{color:var(--muted);font-size:.75rem;font-weight:400}.secondary{background:var(--panel)}.secondary:hover{border-color:var(--accent)}.text-link{font-size:.92rem;font-weight:600;color:var(--accent)}.text-link:hover{text-decoration:underline;text-underline-offset:5px}.small{font-size:.8rem;color:var(--muted)}.mobile-break{display:none}.hero-visual{padding:25px;border:1px solid var(--border);border-radius:16px;background:var(--panel);box-shadow:0 20px 60px #0003}.visual-top{display:flex;align-items:center;gap:9px;font-size:.7rem;letter-spacing:.15em;color:var(--muted);margin-bottom:23px}.live-dot{width:7px;height:7px;background:var(--accent);border-radius:50%}.concept-window{border:1px solid #455350;border-radius:8px;overflow:hidden}.window-bar{display:flex;gap:20px;align-items:center;background:var(--panel-light);padding:8px 12px;color:var(--muted);font-size:.65rem}.window-bar>span:first-child{font-size:.5rem;letter-spacing:.1em}.concept-content{position:relative;display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:228px;background:linear-gradient(135deg,#1e3430,#192124);padding:30px 15px}.concept-content p{font-size:1.6rem;line-height:1.65;font-weight:650;letter-spacing:-.03em}.capture-tag{font-size:.65rem;color:var(--muted)}.frame-corner{position:absolute;width:17px;height:17px;border-color:var(--accent);border-style:solid}.tl{top:18px;left:18px;border-width:1px 0 0 1px}.tr{top:18px;right:18px;border-width:1px 1px 0 0}.bl{bottom:18px;left:18px;border-width:0 0 1px 1px}.br{bottom:18px;right:18px;border-width:0 1px 1px 0}.visual-transfer{display:flex;justify-content:center;align-items:center;gap:18px;margin:25px 0 12px;font-size:.88rem}.hero-visual>.small{text-align:center;margin:0}kbd{font-family:inherit;background:var(--panel-light);border:1px solid #53615d;border-bottom-width:3px;border-radius:6px;padding:7px 13px;font-size:.8rem}.section{padding-block:66px}.section-lead{color:var(--muted);max-width:640px;font-size:1.05rem}.eyebrow{color:var(--accent);font-size:.72rem;font-weight:700;letter-spacing:.15em;margin-bottom:13px}.steps{list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:30px 0 0}.steps>li{position:relative;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:24px}.steps>li:not(:last-child):after{content:"→";position:absolute;right:-18px;top:48%;color:var(--accent);z-index:1;background:var(--bg);border-radius:50%;width:32px;text-align:center}.step-number{font-size:.7rem;color:var(--accent);letter-spacing:.12em;font-weight:650}.step-art{height:105px;display:flex;align-items:center;justify-content:center;margin-bottom:18px}.screen-art{flex-direction:column;gap:6px}.screen-art span{width:100px;background:#35433f;height:6px;border-radius:2px}.screen-art span:first-child{height:40px;background:#253a33;border:1px solid #53675e}.screen-art span:last-child{width:55px}.key-art kbd{font-size:1rem;padding:12px 24px}.chat-art{flex-direction:column;align-items:flex-end;gap:9px;padding-inline:20px}.chat-art span{font-size:.72rem;border-radius:6px;background:#283c34;color:var(--accent);padding:5px 15px}.chat-art span:last-child{align-self:flex-start;background:var(--panel-light);color:var(--muted)}.steps p{font-size:.9rem;color:var(--muted);margin:0}.section-link{display:inline-block;margin-top:25px}.tinted{background:#141b1d;border-block:1px solid var(--border)}.split{display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:center}.split p{color:var(--muted)}.quick-preview{border:1px solid var(--border);background:var(--panel);border-radius:12px;padding:24px}.prompt-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.prompt-grid>div{background:var(--panel-light);border:1px solid #35403f;border-radius:6px;padding:17px 12px;font-size:.84rem;text-align:center}.preview-footer{display:flex;justify-content:space-between;gap:12px;font-size:.7rem;color:var(--muted);margin-top:20px}.use-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:32px}.use-grid article{border-top:1px solid var(--border);padding-top:25px}.use-grid p{font-size:.95rem;color:var(--muted)}.use-label{font-size:.65rem;letter-spacing:.12em;color:var(--muted);display:block;margin-bottom:14px}.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;border:1px solid var(--border);background:var(--border);border-radius:12px;overflow:hidden;margin-top:30px}.feature-grid article{padding:27px;background:var(--panel)}.feature-grid p{font-size:.88rem;color:var(--muted);margin:0}.privacy-card{padding:38px;border:1px solid #3d554b;border-radius:12px;background:#16211d}.privacy-card p:not(.eyebrow){max-width:800px;color:var(--muted)}.faq-list{margin-top:24px;border-top:1px solid var(--border)}details{border-bottom:1px solid var(--border)}summary{padding:22px 4px;cursor:pointer;font-weight:550}details p{padding:0 24px 12px;color:var(--muted);font-size:.95rem}.closing{border-top:1px solid var(--border);text-align:center;padding-bottom:90px}.closing p:not(.eyebrow){color:var(--muted)}.site-footer{background:#0c1012;border-top:1px solid var(--border);padding-block:35px}.footer-top{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-bottom:24px}.site-footer p{font-size:.8rem;color:var(--muted)}.site-footer p:last-child{margin-bottom:0}.page-intro{padding-block:66px 18px}.page-intro .lead{max-width:720px}.reading{max-width:800px;padding-bottom:65px}.reading section{padding-block:28px;border-bottom:1px solid var(--border)}.reading section:last-child{border:0}.reading h2{font-size:1.5rem}.reading p,.reading li{color:var(--muted)}.numbered li{padding-bottom:12px}.note{border-left:2px solid var(--accent);padding:12px 18px;background:var(--panel);font-size:.85rem}.two-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.two-cards article{padding:22px;border:1px solid var(--border);border-radius:8px;background:var(--panel)}.two-cards p{margin-bottom:0}.compact{padding-top:15px}.faq-page{padding-top:10px}.release h2{margin-top:22px}.status-pill{display:inline-block;color:var(--accent);border-color:#496258;background:#1a2822}.privacy-statement{font-size:1.15rem;color:var(--text)!important}
@media(max-width:900px){.hero{gap:30px;padding-block:60px}.header-inner{gap:20px}nav{gap:16px}.split{gap:30px}.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.steps>li{padding:19px}.chat-art{padding-inline:0}}
@media(max-width:700px){html{scroll-padding-top:24px}.container{width:calc(100% - 32px)}.header-inner{flex-direction:column;align-items:flex-start;gap:12px;padding-block:15px}nav{gap:12px 18px;font-size:.78rem}.hero{grid-template-columns:minmax(0,1fr);padding-block:40px 30px;gap:32px}.hero h1{font-size:clamp(2rem,8vw,3rem)}.hero-brand{margin-bottom:14px}.hero-visual{max-width:470px;width:100%;margin:auto;padding:20px}.concept-content{min-height:200px}.hero-actions{gap:16px}.section{padding-block:40px}.steps{grid-template-columns:minmax(0,1fr);gap:22px}.steps>li{padding:22px}.steps>li:not(:last-child):after{content:"↓";top:auto;right:calc(50% - 16px);bottom:-26px}.step-art{height:80px;margin-bottom:12px}.chat-art{align-items:center}.chat-art span:last-child{align-self:center}.split{grid-template-columns:minmax(0,1fr);gap:24px}.use-grid{grid-template-columns:minmax(0,1fr);gap:10px}.feature-grid{grid-template-columns:minmax(0,1fr)}.privacy-card{padding:24px}.footer-top{flex-direction:column;align-items:flex-start;gap:14px}.page-intro{padding-top:40px}.two-cards{grid-template-columns:minmax(0,1fr)}.compact{padding-top:8px}.reading section{padding-block:23px}.download{padding:13px 17px}.closing{padding-bottom:50px}}
@media(max-width:380px){.mobile-break{display:block}.prompt-grid{grid-template-columns:minmax(0,1fr)}.visual-transfer{gap:10px;font-size:.8rem}.visual-transfer kbd{padding:7px 9px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
