/* Brand-preserving native CSS. DESIGN_VARIANCE 6 / MOTION_INTENSITY 3 / VISUAL_DENSITY 3.
   Auto theme with an accessible manual override; grayscale. Radius: controls 999px, panels 16px, inputs 10px.
   Layer scale: 1 for skip-link only. No scroll/ambient animation. */
:root{color-scheme:light dark;--bg:#fafafa;--ink:#202022;--muted:#5b5b60;--line:#d8d8dc;--surface:#f0f0f2;--panel:#fff;--button:#202022;--button-text:#fafafa;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC",sans-serif;font-synthesis:none}
*{box-sizing:border-box}html{scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--ink);line-height:1.65}a{color:inherit;text-underline-offset:4px}button,input{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.55}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--ink);outline-offset:4px}input::placeholder{color:var(--muted)}.wrap{width:min(1320px,calc(100% - 80px));margin-inline:auto}.nav{height:80px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:9px;font-weight:680;font-size:23px;text-decoration:none;letter-spacing:-.8px}.brand img{border-radius:7px}.nav nav{display:flex;gap:28px;align-items:center}.nav nav>a:not(.button){font-size:14px;text-decoration:none}.button{display:inline-flex;align-items:center;justify-content:center;gap:22px;border:1px solid var(--button);background:var(--button);color:var(--button-text);border-radius:999px;padding:12px 23px;font-weight:620;text-decoration:none;white-space:nowrap;transition:transform .15s}.button:active{transform:scale(.98)}.button.small{padding:9px 19px;font-size:14px}.button.secondary{background:transparent;color:var(--ink);border-color:var(--line)}.skip{position:fixed;top:8px;left:8px;z-index:1;transform:translateY(-160%);background:var(--button);color:var(--button-text);padding:10px}.skip:focus{transform:none}.hero{display:grid;grid-template-columns:1fr 1.05fr;align-items:center;gap:52px;padding-top:56px;padding-bottom:90px}.eyebrow{font-size:12px;letter-spacing:.1em;margin:0 0 24px;color:var(--muted)}h1{font-size:clamp(34px,3.6vw,54px);line-height:1.3;letter-spacing:-2.5px;font-weight:670;margin:0 0 24px;word-break:keep-all}.intro{font-size:17px;color:var(--muted);margin:0 0 28px;max-width:34em}.signup{scroll-margin:24px}.signup>label{font-size:14px;font-weight:600}.input-row{display:flex;gap:10px;margin:8px 0 14px}.input-row input{min-width:0;flex:1}.input-row button{gap:15px}input:not([type=checkbox]){padding:12px 14px;border:1px solid var(--line);background:var(--panel);border-radius:10px;color:var(--ink);min-height:48px}.check{display:flex;align-items:flex-start;gap:9px;font-size:12px!important;font-weight:400!important;color:var(--muted)}.check input{width:16px;height:16px;flex-shrink:0;margin-top:4px;accent-color:var(--ink)}.check a{white-space:nowrap}.fine{font-size:12px;color:var(--muted);line-height:1.7}.message{min-height:24px;font-size:14px;margin:12px 0;overflow-wrap:anywhere}.message[data-error=true]{font-weight:650}.trap{position:absolute;clip-path:inset(50%);width:1px;height:1px;overflow:hidden}.hero-visual{margin:0;min-width:0;align-self:center}.visual-label{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:var(--muted);margin-bottom:16px}.hero-visual img{width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:16px;box-shadow:0 18px 55px rgb(40 40 45/.08)}figcaption{font-size:11px;color:var(--muted);margin-top:15px}h2{font-size:clamp(28px,3vw,42px);line-height:1.4;letter-spacing:-1.5px;margin:0 0 24px;font-weight:640}.section-copy{font-size:16px;color:var(--muted);max-width:30em}.explain{padding-block:78px;display:grid;grid-template-columns:1fr 1fr;gap:100px;border-top:1px solid var(--line)}.journey{list-style:none;margin:0;padding:0;display:grid;gap:28px}.journey li{padding-left:20px;border-left:2px solid var(--line)}.journey strong{font-size:18px;font-weight:600}.journey p{font-size:14px;color:var(--muted);margin:6px 0 0}.decision-band{background:var(--surface)}.decision-layout{display:grid;grid-template-columns:1fr 1fr;gap:100px;padding-block:80px;align-items:center}.node-label{font-family:ui-monospace,monospace;display:inline-block;padding:5px 12px;border:1px solid var(--line);border-radius:999px;font-size:12px;margin-bottom:24px}.decision-example{padding:30px;background:var(--panel);border:1px solid var(--line);border-radius:16px}.decision-example h3{margin:0 0 20px;font-size:16px}.comparison{padding-block:10px}.comparison p{margin:4px 0;font-size:15px}.comparison .muted{font-size:12px}.comparison.better{border-top:1px solid var(--line);margin-top:12px;padding-top:20px}.comparison ul{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}.comparison li{font-size:12px;border:1px solid var(--line);padding:4px 12px;border-radius:999px}.closing{padding-block:90px}.closing h2{max-width:22em}.reasons{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:54px;margin:40px 0 32px}.reasons p{font-size:14px;color:var(--muted);margin:0}.reasons strong{display:block;color:var(--ink);font-size:17px;margin-bottom:12px}.footer{border-top:1px solid var(--line);padding-block:28px;display:flex;align-items:center;justify-content:space-between;gap:24px;font-size:12px;color:var(--muted)}.footer .brand{font-size:18px;color:var(--ink)}.legal{max-width:700px;padding-block:70px;min-height:72dvh}.legal h1,.admin-wrap h1{font-size:36px}.legal h2{font-size:21px;letter-spacing:0;margin-top:36px}.legal p{color:var(--muted)}.admin-wrap{max-width:1100px;margin:60px auto;padding:0 24px}.admin-head,.toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.admin-login{max-width:440px;margin-top:40px}.admin-login label,.admin-login input{display:block;width:100%;margin:10px 0}.toolbar{margin-block:30px}.table-scroll{overflow:auto;border:1px solid var(--line);border-radius:10px}table{width:100%;border-collapse:collapse;text-align:left;font-size:14px;white-space:nowrap}th,td{padding:13px 16px;border-bottom:1px solid var(--line)}th{background:var(--surface);font-weight:600}td button{font-size:12px;padding:6px 10px;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--ink);margin-right:5px}td.email{white-space:normal;overflow-wrap:anywhere;min-width:200px}#challenge{margin-top:12px;max-width:100%;overflow:hidden}.muted{color:var(--muted)}[hidden]{display:none!important}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#171719;--ink:#eeeef0;--muted:#b0b0b7;--line:#444449;--surface:#222225;--panel:#1c1c1f;--button:#eeeef0;--button-text:#171719}:root:not([data-theme=light]) .hero-visual img{box-shadow:none}}
:root[data-theme=dark]{color-scheme:dark;--bg:#171719;--ink:#eeeef0;--muted:#b0b0b7;--line:#444449;--surface:#222225;--panel:#1c1c1f;--button:#eeeef0;--button-text:#171719}:root[data-theme=light]{color-scheme:light;--bg:#fafafa;--ink:#202022;--muted:#5b5b60;--line:#d8d8dc;--surface:#f0f0f2;--panel:#fff;--button:#202022;--button-text:#fafafa}.theme-control{display:inline-flex;align-items:center;gap:8px;white-space:nowrap}.theme-control select{min-height:44px;border:1px solid var(--line);border-radius:10px;padding:8px 10px;background:var(--panel);color:var(--ink);font:inherit;cursor:pointer}.theme-control select:focus-visible{outline:3px solid var(--ink);outline-offset:4px}
@media(min-width:768px) and (max-width:1100px){.wrap{width:calc(100% - 48px)}.hero{grid-template-columns:1fr 1fr;gap:28px}.input-row{flex-direction:column}.explain,.decision-layout{gap:45px}.nav nav{gap:18px}}
@media(max-width:767px){.wrap{width:calc(100% - 40px)}.nav{height:68px;gap:12px}.nav nav{gap:10px}.nav nav>a:not(.button){display:none}.brand{font-size:21px}.hero{grid-template-columns:1fr;gap:36px;padding-top:34px;padding-bottom:48px}h1{font-size:clamp(29px,7.9vw,46px);letter-spacing:-1.5px}.intro{font-size:15px}.eyebrow{margin-bottom:16px}.input-row{flex-direction:column}.input-row .button{width:100%}.hero-visual{width:100%}.visual-label{font-size:11px}.explain,.decision-layout{grid-template-columns:1fr;gap:32px;padding-block:48px}.decision-example{padding:22px}.closing{padding-block:48px}.reasons{grid-template-columns:1fr;gap:24px;margin-top:28px}.reasons strong{margin-bottom:6px}.footer{flex-wrap:wrap;gap:16px}.footer>span{order:3;width:100%}h2{font-size:28px}.legal{padding-block:40px}.admin-wrap{margin-top:30px}.toolbar .button{font-size:13px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}