:root{
  --navy:#0b1730; --navy2:#11224a; --ink:#0d1526; --gold:#ffc83d; --gold2:#ffe08a; --cream:#fff8e6;
  --text:#14203a; --muted:#4a5875; --line:#d8dfeb; --white:#fff; --pink:#e8357f; --blue:#1aa7e8; --green:#3fa34d;
  --fs:21px; --radius:22px; --wrap:1180px;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;font-family:"Noto Sans TC",system-ui,-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif;font-size:var(--fs);line-height:1.75;color:var(--text);background:#fff;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
strong{font-weight:900}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.wrap.narrow{max-width:900px}
.skip{position:absolute;left:-999px;top:0;background:#000;color:#fff;padding:12px;z-index:100}
.skip:focus{left:12px}
.gold{color:var(--gold)}
.mark{background:linear-gradient(transparent 55%,rgba(255,200,61,.65) 55%);padding:0 .1em}
.center{text-align:center}
.note{font-size:.82em;color:var(--muted);line-height:1.7}
.dark .note,.foot .note{color:#b7c3d9}
:focus-visible{outline:4px solid var(--gold);outline-offset:3px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4em;padding:.7em 1.15em;border-radius:16px;border:2px solid currentColor;font-weight:700;text-decoration:none;font-size:1em;line-height:1.2;background:transparent;color:inherit;cursor:pointer;transition:transform .15s,background .2s}
.btn:hover{transform:translateY(-2px)}
.btn.gold{background:linear-gradient(180deg,#ffd75e,#ffb800);border-color:#ffb800;color:#1a1200;box-shadow:0 10px 26px rgba(255,184,0,.35)}
.btn.xl{font-size:1.05em;padding:.85em 1.3em}
.btn.sm{font-size:.82em;padding:.5em .9em;border-radius:12px}

/* ---------- header ---------- */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:rgba(11,23,48,.94);backdrop-filter:blur(8px);color:#fff;border-bottom:1px solid rgba(255,255,255,.08)}
.top-in{display:flex;align-items:center;gap:18px;height:72px}
.brand{font-weight:900;font-size:1.05em;text-decoration:none;display:flex;align-items:center;gap:10px;white-space:nowrap}
.brand .dot{width:14px;height:14px;border-radius:50%;background:var(--gold);box-shadow:0 0 18px var(--gold)}
.nav{display:flex;gap:4px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav a{text-decoration:none;padding:8px 12px;border-radius:10px;font-size:.84em;font-weight:700;white-space:nowrap;color:#dfe6f3}
.nav a:hover{background:rgba(255,255,255,.1);color:#fff}
.tools{display:flex;align-items:center;gap:10px}
.fontsize{display:flex;border:1px solid rgba(255,255,255,.25);border-radius:12px;overflow:hidden}
.fontsize button{background:transparent;color:#fff;border:0;padding:8px 10px;font:inherit;font-weight:900;font-size:.8em;cursor:pointer;min-width:44px;min-height:40px}
.fontsize button:hover{background:rgba(255,255,255,.12)}

/* ---------- hero ---------- */
.hero{position:relative;color:#fff;background:var(--navy);overflow:hidden;padding:56px 0 40px}
.hero-bg{position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,23,48,.97) 0%,rgba(11,23,48,.86) 45%,rgba(11,23,48,.45) 100%),url('../photos/taipei-skyline-dusk.jpg') center/cover no-repeat}
.hero-in{position:relative;display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center}
.eyebrow{display:inline-block;margin:0 0 14px;padding:6px 14px;border-radius:99px;background:rgba(255,200,61,.15);border:1px solid rgba(255,200,61,.5);color:var(--gold2);font-weight:700;font-size:.85em;letter-spacing:.06em}
.hero h1{margin:0;font-size:clamp(46px,7vw,92px);line-height:1.1;font-weight:900;letter-spacing:.01em;text-shadow:0 6px 30px rgba(0,0,0,.4)}
.hero-lead{font-size:1.12em;margin:22px 0;max-width:34em}
.hero-lead strong{color:var(--gold2)}
.equations{display:grid;gap:10px;margin:8px 0 26px}
.eq{display:flex;flex-wrap:wrap;align-items:center;gap:.4em;font-weight:900;font-size:clamp(22px,2.5vw,32px);padding:10px 18px;border-radius:16px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);width:max-content;max-width:100%}
.eq i{font-style:normal;color:var(--gold);padding:0 .15em}
.cta{display:flex;flex-wrap:wrap;gap:14px}
.cta .btn:not(.gold){color:#fff;border-color:rgba(255,255,255,.55)}
.hero-photo{margin:0;position:relative;border-radius:28px;overflow:hidden;box-shadow:0 40px 80px rgba(0,0,0,.5),0 0 0 3px rgba(255,200,61,.65)}
.hero-photo img{width:100%;height:auto;aspect-ratio:4/5;object-fit:cover;object-position:50% 18%}
.hero-photo figcaption{position:absolute;left:0;right:0;bottom:0;padding:50px 22px 16px;font-weight:900;font-size:1.05em;background:linear-gradient(transparent,rgba(0,0,0,.82))}
.hero-stats{list-style:none;padding:0;margin:40px 0 0;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;position:relative}
.hero-stats li{padding:18px;border-radius:18px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);text-align:center}
.hero-stats b{display:block;font-size:clamp(36px,4.6vw,58px);line-height:1.05;font-weight:900;color:var(--gold);font-variant-numeric:tabular-nums}
.hero-stats span{font-size:.85em;color:#dfe6f3;font-weight:700}

/* ---------- sections ---------- */
.sec{padding:84px 0}
.sec.dark{background:var(--navy);color:#fff}
.sec.light{background:#f3f6fb}
.sec.gold-bg{background:linear-gradient(135deg,#ffd75e,#ffb800)}
.kicker{margin:0 0 10px;font-weight:900;color:#c48a00;letter-spacing:.08em;font-size:.9em}
.dark .kicker{color:var(--gold)}
.h2{margin:0 0 22px;font-size:clamp(32px,4.4vw,54px);line-height:1.25;font-weight:900}
.h2.dark-ink{color:#1a1200}
.h3{font-size:clamp(24px,2.6vw,32px);margin:28px 0 10px;font-weight:900;line-height:1.35}
.sub{margin:-10px 0 24px;color:#c9d3e6}
.lead,.big{font-size:1.08em}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.facts{padding-left:0;list-style:none;margin:18px 0}
.facts li{position:relative;padding:10px 0 10px 38px;border-bottom:1px dashed var(--line)}
.dark .facts li{border-color:rgba(255,255,255,.16)}
.facts li::before{content:"✦";position:absolute;left:4px;top:10px;color:var(--gold);font-size:1.1em}
.facts.small{font-size:.92em}
.quote{margin:26px 0;padding:22px 26px;border-radius:var(--radius);background:var(--navy);color:#fff;font-size:1.25em;font-weight:900;line-height:1.55;border-left:8px solid var(--gold)}
.quote.light{background:rgba(255,255,255,.08)}
.quote cite{display:block;margin-top:10px;font-size:.7em;font-style:normal;color:var(--gold2);font-weight:700}
.photo-card{margin:0;border-radius:var(--radius);overflow:hidden;background:var(--navy);color:#fff;box-shadow:0 24px 60px rgba(11,23,48,.25)}
.photo-card img{width:100%;aspect-ratio:3/2;object-fit:cover}
.photo-card figcaption{padding:18px 22px;font-weight:700;font-size:1.02em;line-height:1.6}
.story{display:flex;align-items:stretch;gap:18px;margin-top:40px}
.story-item{flex:1;padding:22px 24px;border-radius:var(--radius);background:#f3f6fb;border:2px solid var(--line)}
.story-item.now{background:var(--cream);border-color:var(--gold)}
.story-item .year{display:block;font-weight:900;font-size:2em;color:var(--navy)}
.story-item p{margin:6px 0 0}
.story-arrow{display:flex;align-items:center;font-size:2.2em;color:var(--gold)}
.fever{margin-top:28px;padding:22px 26px;border-radius:var(--radius);background:var(--navy);color:#fff}
.fever p{margin:0}
.pill{display:inline-block;padding:0 .6em;border-radius:99px;background:var(--gold);color:#1a1200;font-weight:900;margin:0 .1em}

/* video */
.video{position:relative;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;background:#000;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video-cover{position:absolute;inset:0;border:0;padding:0;cursor:pointer;background:#000}
.video-cover img{width:100%;height:100%;object-fit:cover;opacity:.7}
.video-cover .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:120px;height:120px;border-radius:50%;background:var(--gold);color:#1a1200;font-size:52px;display:flex;align-items:center;justify-content:center;padding-left:10px;box-shadow:0 0 0 14px rgba(255,200,61,.3)}
.video-cover .vlabel{position:absolute;left:0;right:0;bottom:24px;color:#fff;font-weight:900;font-size:1.3em;text-shadow:0 2px 10px #000}
.center .btn{margin:22px 6px 0}

/* zones */
.zones{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:28px 0 18px}
.zone{font:inherit;text-align:left;padding:18px 20px;border-radius:var(--radius);border:3px solid transparent;background:#fff;cursor:pointer;box-shadow:0 8px 24px rgba(11,23,48,.08);color:var(--text)}
.zone b{font-size:2.6em;line-height:1;font-weight:900}
.zone span{font-weight:700;margin-left:.2em}
.zone em{display:block;font-style:normal;font-weight:900;font-size:1.02em;margin-top:6px}
.zone.active{border-color:var(--navy);transform:translateY(-3px)}
.z-ai b{color:#1f6fd1}.z-live b{color:#c46a00}.z-park b{color:var(--green)}.z-urban b{color:#8b46d6}
.zone-panel{display:grid;grid-template-columns:1fr 1fr;gap:30px;background:#fff;border-radius:var(--radius);padding:28px;box-shadow:0 14px 40px rgba(11,23,48,.1);min-height:300px}
.zone-panel img{width:100%;border-radius:16px;aspect-ratio:16/10;object-fit:cover;background:#dfe6f0}
.zone-panel h3{margin:0 0 10px;font-size:1.6em;line-height:1.3}
.zone-panel .zbig{font-size:3em;font-weight:900;color:var(--navy);line-height:1}
.bar-split{display:flex;gap:6px;margin:22px 0 10px;border-radius:16px;overflow:hidden;font-weight:900;color:#fff;font-size:.95em}
.bs{padding:14px 12px;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bs.ai{background:#1f6fd1}.bs.live{background:#c46a00}.bs.park{background:var(--green)}

/* compare */
.compare{position:relative;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;background:#111;user-select:none;box-shadow:0 30px 80px rgba(0,0,0,.45)}
.compare img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.before-wrap{position:absolute;inset:0;clip-path:inset(0 50% 0 0)}
.compare input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.compare .handle{position:absolute;top:0;bottom:0;left:50%;width:4px;margin-left:-2px;background:var(--gold);pointer-events:none}
.compare .handle span{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:64px;height:64px;border-radius:50%;background:var(--gold);color:#1a1200;font-weight:900;font-size:28px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 20px rgba(0,0,0,.4)}
.compare .tag{position:absolute;top:18px;padding:8px 16px;border-radius:12px;background:rgba(0,0,0,.72);font-weight:900;pointer-events:none}
.compare .tag.l{left:18px}.compare .tag.r{right:18px;color:var(--gold)}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:22px}
.gallery figure{margin:0;border-radius:18px;overflow:hidden;background:#1a2747}
.gallery img{width:100%;aspect-ratio:16/10;object-fit:cover}
.gallery figcaption{padding:12px 16px;font-weight:700;font-size:.92em}

/* four cards */
.cards4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.c4{padding:26px 22px;border-radius:var(--radius);background:#f3f6fb;border:2px solid var(--line)}
.c4 .ico{font-size:2.4em}
.c4 h3{margin:6px 0 8px;font-size:1.5em}
.c4 p{margin:0;font-size:.95em}
.c4 b{color:#b07a00}

/* numbers */
.numgrid{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.numgrid li{background:rgba(255,255,255,.88);border-radius:18px;padding:18px 16px;text-align:center}
.numgrid b{display:block;font-size:clamp(34px,4vw,52px);font-weight:900;color:var(--navy);line-height:1.1;font-variant-numeric:tabular-nums}
.numgrid span{font-weight:700;font-size:.88em;color:#3a2a00}

/* traffic */
.diagram{margin:0}
.diagram svg{width:100%;height:auto}
.diagram figcaption{font-size:.8em;color:var(--muted)}
.pink{color:var(--pink)}.blue{color:var(--blue)}

/* valley */
.duo{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:18px;align-items:center;margin:20px 0 40px}
.person{margin:0;border-radius:var(--radius);overflow:hidden;background:#13254d;border:2px solid rgba(255,255,255,.15)}
.person img{width:100%;aspect-ratio:1/1;object-fit:cover;object-position:50% 20%}
.person figcaption{padding:14px 18px;font-size:.9em;line-height:1.5}
.person figcaption b{display:block;font-size:1.5em;color:var(--gold)}
.plus{font-size:3.2em;font-weight:900;color:var(--gold)}
.valley-card{border-radius:var(--radius);padding:30px 20px;text-align:center;background:linear-gradient(135deg,#ffd75e,#ffb800);color:#1a1200;box-shadow:0 20px 50px rgba(255,184,0,.3)}
.valley-card b{display:block;font-size:2.4em;line-height:1.2;font-weight:900}
.valley-card span{font-weight:700}
.ctc{width:100%;height:auto;background:#13254d;border-radius:var(--radius)}

/* quote band */
.quote-band{background-size:cover;background-position:center 30%;color:#fff;padding:110px 0}
.quote-band blockquote{margin:0;font-size:clamp(28px,3.6vw,46px);font-weight:900;line-height:1.5;max-width:22em;text-shadow:0 4px 20px rgba(0,0,0,.5)}
.quote-band .who{font-size:1.2em;font-weight:700;color:var(--gold2)}

/* timeline */
.timeline{list-style:none;padding:0;margin:20px 0;position:relative}
.timeline::before{content:"";position:absolute;left:150px;top:8px;bottom:8px;width:4px;background:var(--line)}
.timeline li{display:grid;grid-template-columns:130px 1fr;gap:44px;padding:12px 0;position:relative}
.timeline li::before{content:"";position:absolute;left:142px;top:24px;width:20px;height:20px;border-radius:50%;background:#fff;border:4px solid var(--navy)}
.timeline li.hl::before{background:var(--gold);border-color:#c48a00}
.timeline span{font-weight:900;font-size:1.05em;text-align:right;color:var(--navy);line-height:1.4;padding-top:8px}
.timeline p{margin:0;padding:8px 0}
.timeline li.hl p{font-weight:900}

/* faq */
details{background:#fff;border-radius:18px;margin:14px 0;border:2px solid var(--line);overflow:hidden}
summary{cursor:pointer;padding:20px 24px;font-weight:900;font-size:1.12em;list-style:none;position:relative;padding-right:60px}
summary::-webkit-details-marker{display:none}
summary::after{content:"＋";position:absolute;right:24px;top:18px;font-size:1.2em;color:#c48a00}
details[open] summary::after{content:"－"}
details p{margin:0;padding:0 24px 22px}

/* download */
.dl{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.dl-card{display:flex;flex-direction:column;gap:6px;padding:26px 22px;border-radius:var(--radius);background:rgba(255,255,255,.07);border:2px solid rgba(255,255,255,.16);text-decoration:none;transition:transform .15s,border-color .2s}
.dl-card:hover{transform:translateY(-4px);border-color:var(--gold)}
.dl-card .ico{font-size:2.6em}
.dl-card b{font-size:1.25em}
.dl-card span:last-child{color:#c9d3e6;font-size:.88em}
.share{text-align:center;margin-top:26px}
.share .btn{color:#fff}

.sources,.credits{padding-left:1.2em;font-size:.88em}
.sources li,.credits li{margin:6px 0}
.foot{background:#070f22;color:#fff;padding:56px 0;text-align:center}
.foot-big{font-size:clamp(30px,4vw,48px);font-weight:900;margin:0 0 6px}
.fab{position:fixed;right:18px;bottom:calc(18px + env(safe-area-inset-bottom,0px));z-index:60;display:flex;flex-direction:column;align-items:center;justify-content:center;width:84px;height:84px;border-radius:50%;background:linear-gradient(180deg,#ffd75e,#ffb800);color:#1a1200;text-decoration:none;font-size:30px;font-weight:900;box-shadow:0 12px 30px rgba(0,0,0,.35)}
.fab span{font-size:15px;line-height:1}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

@media (max-width:1000px){
  .nav{display:none}
  .tools{margin-left:auto}
  .hero-in,.grid2,.zone-panel{grid-template-columns:1fr}
  .hero-photo{max-width:360px;margin:0 auto;order:-1}
  .hero-stats,.numgrid,.zones,.cards4,.dl{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:1fr}
  .duo{grid-template-columns:1fr auto 1fr}
  .duo .eqs{display:none}
  .valley-card{grid-column:1/-1}
  .story{flex-direction:column}
  .story-arrow{justify-content:center;transform:rotate(90deg)}
}
@media (max-width:560px){
  :root{--fs:19px}
  .wrap{padding:0 16px}
  .sec{padding:60px 0}
  .brand{font-size:.95em}
  .tools .btn.sm{display:none}
  .fontsize button{min-width:40px;padding:8px 6px}
  .hero{padding-top:28px}
  .hero-photo{max-width:280px}
  .hero-photo img{aspect-ratio:1/1}
  .cta .btn{width:100%}
  .zone b{font-size:2em}
  .timeline::before{left:104px}
  .timeline li{grid-template-columns:90px 1fr;gap:34px}
  .timeline li::before{left:96px}
  .timeline span{font-size:.9em}
  .duo{gap:10px}
  .plus{font-size:2em}
  .fab{width:70px;height:70px;font-size:24px}
}