:root{
  --navy:#0d2137;
  --navy-2:#142f4b;
  --teal:#087f80;
  --teal-soft:#dff4f1;
  --gold:#c7a06f;
  --paper:#f6f3ec;
  --ink:#10243a;
  --muted:#5d6873;
  --line:#dce3e6;
  --white:#fff;
  --shadow:0 30px 80px -48px rgba(13,33,55,.48);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Noto Sans TC",sans-serif;line-height:1.65}
a{color:inherit}
button,a{font:inherit}
.skip-link{position:absolute;left:1rem;top:-5rem;z-index:100;padding:.8rem 1rem;background:var(--navy);color:white;border-radius:.5rem}
.skip-link:focus{top:1rem}
.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:2rem;min-height:76px;padding:10px max(24px,calc((100vw - 1180px)/2));background:rgba(246,243,236,.92);border-bottom:1px solid rgba(16,36,58,.12);backdrop-filter:blur(16px)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font:800 1.05rem/1 Inter,sans-serif;letter-spacing:.06em}
.brand>span>span{color:var(--teal)}
.brand small{display:block;margin-top:7px;color:var(--muted);font-size:.53rem;letter-spacing:.2em}
nav{display:flex;align-items:center;gap:24px;font-size:.9rem;font-weight:700}
nav a{text-decoration:none}
.nav-cta{padding:10px 16px;border-radius:999px;background:var(--navy);color:white}
main{overflow:hidden}
.intro{max-width:980px;margin:0 auto;padding:96px 28px 55px;text-align:center}
.eyebrow,.step-count,.case-number,.step-label{margin:0 0 14px;color:var(--teal);font:800 .76rem/1.3 Inter,"Noto Sans TC",sans-serif;letter-spacing:.13em;text-transform:uppercase}
h1{max-width:880px;margin:0 auto;font-size:clamp(2.4rem,6vw,5.35rem);line-height:1.06;letter-spacing:-.055em}
.lede{max-width:680px;margin:28px auto 0;color:var(--muted);font-size:1.08rem}
.synthetic-notice{display:inline-block;margin:28px auto 0;padding:12px 16px;border:1px solid rgba(8,127,128,.24);border-radius:10px;background:rgba(255,255,255,.6);color:#34504f;font-size:.84rem}
.demo-shell{display:grid;grid-template-columns:minmax(230px,.72fr) minmax(0,1.6fr);gap:18px;max-width:1180px;margin:0 auto;padding:0 28px 100px}
.case-picker{display:flex;flex-direction:column;gap:10px}
.case-card{min-height:132px;padding:20px;text-align:left;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.54);color:var(--ink);cursor:pointer;transition:.2s ease}
.case-card strong,.case-card>span:last-child{display:block}
.case-card strong{margin:8px 0 7px;font-size:1.02rem}
.case-card>span:last-child{color:var(--muted);font-size:.84rem}
.case-card:hover,.case-card.is-active{border-color:var(--teal);background:var(--white);box-shadow:var(--shadow);transform:translateY(-2px)}
.demo-panel{min-height:570px;padding:clamp(26px,5vw,56px);border-radius:22px;background:var(--navy);color:white;box-shadow:0 40px 90px -40px rgba(13,33,55,.68)}
.panel-topline{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}
.source-type{margin:0;color:rgba(255,255,255,.6);font-size:.82rem}
.approval-chip{max-width:220px;padding:8px 12px;border:1px solid rgba(223,244,241,.3);border-radius:999px;background:rgba(223,244,241,.08);color:#bfe9e4;font-size:.76rem;font-weight:700;text-align:center}
.progress-track{height:3px;margin:24px 0 38px;background:rgba(255,255,255,.12)}
.progress-track span{display:block;width:14.285%;height:100%;background:var(--gold);transition:width .22s ease}
.step-label{color:var(--gold)}
.demo-panel h2{margin:0 0 26px;font-size:clamp(1.5rem,3vw,2.4rem);line-height:1.2}
.stage-card{min-height:150px;padding:24px;border:1px solid rgba(255,255,255,.12);border-radius:14px;background:rgba(255,255,255,.055)}
.stage-card p{margin:0;font-size:1.1rem;line-height:1.75}
.stage-card dl{display:grid;grid-template-columns:minmax(110px,.5fr) 1fr;gap:10px 18px;margin:0}
.stage-card dt{color:rgba(255,255,255,.55);font-size:.8rem}
.stage-card dd{margin:0;font-weight:700}
.human-boundary{display:grid;grid-template-columns:100px 1fr;gap:18px;margin:20px 0 34px;color:rgba(255,255,255,.72);font-size:.82rem}
.human-boundary span{color:var(--gold);font-weight:800}
.panel-controls{display:flex;justify-content:space-between;gap:12px;margin-top:auto}
.control,.button{display:inline-flex;min-height:48px;align-items:center;justify-content:center;padding:12px 20px;border:0;border-radius:999px;font-weight:800;text-decoration:none;cursor:pointer}
.control.primary,.button.primary{background:var(--teal);color:white}
.control.secondary{border:1px solid rgba(255,255,255,.22);background:transparent;color:white}
.control:disabled{opacity:.35;cursor:not-allowed}
.explain{display:grid;grid-template-columns:.8fr 1.3fr;gap:64px;max-width:1180px;margin:0 auto;padding:96px 28px;border-top:1px solid rgba(16,36,58,.13)}
.explain h2,.final-cta h2{margin:0;font-size:clamp(2rem,4vw,3.5rem);line-height:1.12;letter-spacing:-.04em}
.explain ol{display:grid;gap:0;margin:0;padding:0;list-style:none}
.explain li{display:grid;grid-template-columns:50px 115px 1fr;gap:20px;align-items:baseline;padding:22px 0;border-top:1px solid var(--line)}
.explain li span{color:var(--teal);font:800 .78rem Inter,sans-serif}
.explain li p{margin:0;color:var(--muted)}
.final-cta{display:grid;grid-template-columns:1.15fr .8fr;gap:50px;align-items:end;max-width:1180px;margin:40px auto 100px;padding:60px;border-radius:22px;background:white;box-shadow:var(--shadow)}
.final-cta p:not(.eyebrow){max-width:650px;color:var(--muted)}
.cta-actions{display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.text-link{color:var(--teal);font-weight:800;text-decoration:none}
.noscript-summary{max-width:1124px;margin:0 auto 60px;padding:28px;background:white;border:1px solid var(--line);border-radius:16px}
footer{display:flex;justify-content:space-between;gap:24px;max-width:1180px;margin:0 auto;padding:30px 28px 44px;border-top:1px solid var(--line);color:var(--muted);font-size:.82rem}
footer div{display:flex;gap:18px}
:focus-visible{outline:3px solid var(--gold);outline-offset:4px}
@media(max-width:899px){
  .site-header{padding-inline:18px}.site-header nav>a:not(.nav-cta){display:none}
  .intro{padding:64px 22px 40px}.demo-shell{grid-template-columns:1fr;padding:0 20px 70px}.case-picker{display:grid;grid-template-columns:repeat(3,minmax(250px,1fr));overflow-x:auto;padding:0 0 12px}.case-card{min-height:150px}
  .demo-panel{min-height:610px;padding:28px 22px}.explain,.final-cta{grid-template-columns:1fr}.explain{gap:30px;padding:70px 22px}.final-cta{margin:20px 20px 70px;padding:35px 24px}.explain li{grid-template-columns:38px 92px 1fr}.human-boundary{grid-template-columns:1fr;gap:5px}
}
@media(max-width:560px){h1{font-size:2.45rem}.synthetic-notice{text-align:left}.panel-topline{align-items:flex-start}.approval-chip{max-width:145px}.stage-card dl{grid-template-columns:1fr}.stage-card dd{margin-bottom:9px}.panel-controls{position:sticky;bottom:10px}.control{flex:1;padding-inline:12px}.explain li{grid-template-columns:35px 1fr}.explain li p{grid-column:2}footer{flex-direction:column}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}