:root{
  --bg:#060A14; --panel:rgba(16,24,44,.62); --panel-solid:#101a2c;
  --gold:#E8B44A; --cyan:#38E1D4; --violet:#8C6BFF; --grey:#8CA0C8;
  --white:#F2F5FB; --up:#3DDC84; --down:#FF5D6C;
  --line:rgba(140,160,200,.12);
  --c-qqq:#38E1D4; --c-noreb:#8CA0C8; --c-ann:#E8B44A; --c-semi:#8C6BFF;
  --mono:"JetBrains Mono",ui-monospace,"SF Mono",Consolas,monospace;
  --head:"Space Grotesk","Microsoft JhengHei",system-ui,sans-serif;
  --body:"Noto Sans TC","Microsoft JhengHei",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--white);font-family:var(--body);line-height:1.7;
  overflow-x:hidden;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(1200px 800px at 78% -8%, rgba(232,180,74,.10), transparent 55%),
    radial-gradient(1000px 700px at 10% 12%, rgba(56,225,212,.08), transparent 55%),
    radial-gradient(900px 900px at 50% 120%, rgba(140,107,255,.08), transparent 55%),
    var(--bg)}
#hero-canvas{position:fixed;inset:0;z-index:-1;opacity:.55}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
h1,h2,h3{font-family:var(--head);font-weight:700;letter-spacing:.5px;line-height:1.2}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
section{position:relative;padding:110px 0;border-top:1px solid transparent}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:3px;color:var(--gold);text-transform:uppercase;margin-bottom:14px}
.sec-title{font-size:clamp(26px,4vw,40px);margin-bottom:10px}
.sec-sub{color:var(--grey);font-size:15px;max-width:620px;margin-bottom:34px}

/* reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* hero */
#hero{min-height:100vh;display:flex;flex-direction:column;justify-content:center;padding:0}
.hero-tag{display:inline-flex;gap:8px;align-items:center;font-family:var(--mono);font-size:12px;letter-spacing:2px;
  color:var(--cyan);border:1px solid var(--line);border-radius:999px;padding:6px 14px;margin-bottom:26px;width:fit-content;
  background:rgba(56,225,212,.05)}
.hero-tag .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
#hero h1{font-size:clamp(34px,6.4vw,74px);line-height:1.04;letter-spacing:-.5px}
#hero h1 .g{background:linear-gradient(100deg,var(--gold),#ffd98a);-webkit-background-clip:text;background-clip:text;color:transparent}
#hero .lead{color:var(--grey);font-size:clamp(15px,2vw,19px);max-width:640px;margin:24px 0 44px}
.hero-kpis{display:flex;gap:16px;flex-wrap:wrap}
.hero-kpis .k{background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:16px;padding:20px 24px;min-width:172px;position:relative;overflow:hidden}
.hero-kpis .k b{font-family:var(--mono);font-size:34px;display:block;color:var(--white)}
.hero-kpis .k span{font-size:12.5px;color:var(--grey);letter-spacing:.5px}
.hero-kpis .k::after{content:"";position:absolute;left:0;top:0;height:2px;width:100%;
  background:linear-gradient(90deg,var(--gold),transparent)}
.scroll-hint{position:absolute;bottom:34px;left:50%;transform:translateX(-50%);color:var(--grey);font-size:11px;letter-spacing:2px;font-family:var(--mono);text-align:center}
.scroll-hint .arrow{display:block;margin:8px auto 0;width:18px;height:18px;border-right:1.5px solid var(--gold);border-bottom:1.5px solid var(--gold);transform:rotate(45deg);animation:bob 1.8s infinite}
@keyframes bob{0%,100%{transform:rotate(45deg) translate(0,0);opacity:.4}50%{transform:rotate(45deg) translate(4px,4px);opacity:1}}

/* glass cards */
.card{background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:18px;padding:24px;position:relative}
.card.glow{background:linear-gradient(var(--panel),var(--panel)) padding-box,
  linear-gradient(120deg,rgba(232,180,74,.5),rgba(56,225,212,.4),rgba(140,107,255,.35)) border-box;border:1px solid transparent}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)} .g3{grid-template-columns:repeat(3,1fr)} .g4{grid-template-columns:repeat(4,1fr)}
.g-auto{grid-template-columns:repeat(auto-fit,minmax(186px,1fr))}
@media(max-width:820px){.g2,.g3,.g4{grid-template-columns:1fr}}
@media(max-width:560px){.g-auto{grid-template-columns:1fr}}

/* tilt card */
.tilt{transition:transform .12s ease;transform-style:preserve-3d;will-change:transform}

/* assumption chips */
.assume{display:flex;flex-direction:column;gap:12px}
.assume .row{display:flex;gap:14px;align-items:flex-start;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:rgba(16,24,44,.4)}
.assume .row .n{font-family:var(--mono);color:var(--gold);font-size:13px;min-width:26px}
.assume .row .t{font-size:14px;color:#d6ddec}
.assume .row .t b{color:var(--white)}

/* chart */
.chart-box{background:rgba(9,14,26,.55);border:1px solid var(--line);border-radius:16px;padding:16px 14px 10px}
.chart-box canvas{width:100%;display:block}
.legend{display:flex;gap:18px;flex-wrap:wrap;margin:6px 4px 2px;font-size:13px}
.legend .li{display:inline-flex;gap:7px;align-items:center;cursor:pointer;user-select:none;color:var(--grey);transition:opacity .2s}
.legend .li.off{opacity:.35;text-decoration:line-through}
.legend .sw{width:14px;height:3px;border-radius:2px;display:inline-block}
.cap{font-size:12px;color:var(--grey);margin-top:12px;background:rgba(140,160,200,.06);padding:10px 13px;border-radius:9px}

/* metrics table */
.mtable{width:100%;border-collapse:collapse;font-size:13.5px}
.mtable th,.mtable td{padding:11px 8px;text-align:right;border-bottom:1px solid var(--line)}
.mtable th{color:var(--grey);font-weight:500;font-size:12px;font-family:var(--mono);letter-spacing:.5px}
.mtable td:first-child,.mtable th:first-child{text-align:left}
.mtable td.name{font-weight:600}
.mtable .num{color:var(--white)}
.mtable tr.hl td{background:rgba(232,180,74,.07)}
.pos{color:var(--up)} .neg{color:var(--down)}
.dotc{width:9px;height:9px;border-radius:50%;display:inline-block;margin-right:8px;vertical-align:middle}

/* strategy KPI cards */
.skpi{padding:22px}
.skpi .top{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.skpi .top .bar{width:4px;height:34px;border-radius:3px}
.skpi .top h3{font-size:17px}
.skpi .top small{color:var(--grey);font-family:var(--mono);font-size:11px;display:block;margin-top:2px}
.skpi .kv{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px dashed var(--line);font-size:13.5px}
.skpi .kv span{color:var(--grey)} .skpi .kv b{font-family:var(--mono)}

/* stress cards */
.stress .card h3{font-size:16px;margin-bottom:4px}
.stress .yr{font-family:var(--mono);color:var(--gold);font-size:12px;margin-bottom:14px}
.stress .bars{display:flex;flex-direction:column;gap:9px}
.stress .bar-row{font-size:12.5px}
.stress .bar-row .lab{display:flex;justify-content:space-between;margin-bottom:3px;color:var(--grey)}
.stress .track{height:8px;background:rgba(255,93,108,.12);border-radius:5px;overflow:hidden}
.stress .fill{height:100%;background:linear-gradient(90deg,#ff5d6c,# b0341f);border-radius:5px}

/* 12 scenario 3D grid */
.iso-wrap{perspective:1400px;padding:30px 0 10px;overflow:visible}
.iso{transform:rotateX(56deg) rotateZ(-45deg);transform-style:preserve-3d;margin:40px auto;width:min(560px,80vw);height:min(560px,80vw);position:relative}
.iso .col{position:absolute;width:70px;transform-style:preserve-3d}
.iso .col .stalk{position:absolute;bottom:0;left:0;width:56px;background:linear-gradient(var(--c),color-mix(in srgb,var(--c) 40%,#0a0f1c));
  border:1px solid rgba(255,255,255,.15);transform-origin:bottom;transition:transform 1.2s cubic-bezier(.2,.8,.2,1)}
.iso .col .cap3d{position:absolute;bottom:0;left:0;width:56px;height:56px;background:var(--c);opacity:.9;transform:translateZ(0)}

/* scenario selector */
.selbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}
.selbar .seg{display:flex;background:rgba(16,24,44,.6);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.selbar .seg button{background:none;border:0;color:var(--grey);padding:10px 15px;font-family:var(--body);font-size:13px;cursor:pointer;transition:.2s;white-space:nowrap}
.selbar .seg button.on{background:linear-gradient(120deg,rgba(232,180,74,.9),rgba(232,180,74,.7));color:#0a0f1c;font-weight:700}
.sc-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:20px 0}
@media(max-width:680px){
  .sc-kpis{grid-template-columns:repeat(2,1fr)}
  /* 手機：分段選擇器改為可換行的按鈕格，避免溢出被裁切點不到 */
  .selbar{flex-direction:column;gap:9px}
  .selbar .seg{flex-wrap:wrap;overflow:visible;background:none;border:0;gap:7px;width:100%}
  .selbar .seg button{flex:1 1 42%;border:1px solid var(--line);border-radius:11px;background:rgba(16,24,44,.6);padding:12px 10px;text-align:center}
  .selbar .seg button.on{border-color:var(--gold)}
  /* 手機 hero：卡片壓縮、不強制滿版高度、scroll 提示回到流內不重疊 */
  #hero{min-height:auto;padding:118px 0 64px}
  #hero .lead{font-size:14px;margin:18px 0 28px}
  .hero-kpis{gap:10px}
  .hero-kpis .k{flex:1 1 100%;min-width:0;padding:13px 16px}
  .hero-kpis .k b{font-size:25px}
  .scroll-hint{position:static;transform:none;margin:30px auto 0}
  section{padding:78px 0}
  .sec-title{font-size:26px}
}
@media(max-width:400px){
  #hero h1{font-size:30px}
  .hero-kpis .k b{font-size:22px}
}
.sc-kpis .k{background:rgba(16,24,44,.5);border:1px solid var(--line);border-radius:14px;padding:16px}
.sc-kpis .k b{font-family:var(--mono);font-size:23px;display:block}
.sc-kpis .k span{font-size:11.5px;color:var(--grey)}

/* takeaways */
.takes{display:flex;flex-direction:column;gap:14px}
.take{display:flex;gap:16px;padding:18px 20px}
.take .idx{font-family:var(--mono);font-size:26px;color:var(--gold);opacity:.8;min-width:40px}
.take p{font-size:14.5px;color:#dfe5f0}.take p b{color:var(--white)}
.warn{font-size:13px;color:var(--grey);counter-reset:w}
.warn div{padding:9px 0;border-bottom:1px solid var(--line);padding-left:26px;position:relative}
.warn div::before{content:"▹";position:absolute;left:4px;color:var(--gold)}
.disc{text-align:center;color:var(--grey);font-size:12px;margin-top:40px;font-family:var(--mono)}

/* progress rail */
#rail{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:40;display:flex;flex-direction:column;gap:14px}
#rail a{width:9px;height:9px;border-radius:50%;background:rgba(140,160,200,.3);transition:.3s;position:relative}
#rail a.on{background:var(--gold);box-shadow:0 0 12px var(--gold);transform:scale(1.3)}
#rail a span{position:absolute;right:18px;top:50%;transform:translateY(-50%);white-space:nowrap;font-size:11px;
  font-family:var(--mono);color:var(--grey);opacity:0;pointer-events:none;transition:.2s}
#rail a:hover span{opacity:1}
@media(max-width:820px){#rail{display:none}}
.asof{position:fixed;left:16px;bottom:14px;z-index:40;font-family:var(--mono);font-size:10.5px;color:var(--grey);
  background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:6px 10px;backdrop-filter:blur(8px)}
.tooltip{position:fixed;z-index:60;pointer-events:none;background:rgba(9,14,26,.95);border:1px solid var(--line);
  border-radius:10px;padding:9px 12px;font-size:12px;font-family:var(--mono);opacity:0;transition:opacity .12s;min-width:120px}
.tooltip .th{color:var(--gold);margin-bottom:4px}
.tooltip .tr{display:flex;justify-content:space-between;gap:14px}