@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;500;700;900&display=swap');

:root{
  --bg:#0c0d11; --bg2:#12141a;
  --panel:rgba(255,255,255,.045); --panel-2:rgba(255,255,255,.07); --line:rgba(255,255,255,.1);
  --ink:#eeede9; --sub:#a9a8a4; --faint:#75746f;
  --accent:#f08a6c; --accent-soft:rgba(240,138,108,.14);
  --blue:#8fb8ff; --green:#7fd1a8; --yellow:#ffd45c;
  --todo:#ffd45c;
  --r:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(1100px 560px at 88% -8%,rgba(240,138,108,.11),transparent 60%),
    radial-gradient(900px 520px at -12% 18%,rgba(143,184,255,.08),transparent 60%);
  background-attachment:fixed}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1240px;margin:0 auto;padding:0 clamp(16px,4vw,48px)}
.narrow{max-width:1080px}

/* nav */
.nav{position:sticky;top:0;z-index:10;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:rgba(12,13,17,.72);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;justify-content:space-between;align-items:center;height:58px;gap:12px}
.brand{font-weight:700;letter-spacing:.04em;text-decoration:none;white-space:nowrap}
.brand span{color:var(--accent)}
.nav-links{display:flex;gap:18px;font-size:14px;color:var(--sub)}
.nav-links a{text-decoration:none}
.nav-links a:hover{color:var(--ink)}

/* hero */
.hero{padding-top:72px;padding-bottom:40px}
.eyebrow{font-size:13px;letter-spacing:.32em;color:var(--accent);margin:0 0 14px;font-weight:500}
h1{font-size:clamp(32px,5.6vw,52px);line-height:1.22;margin:0 0 18px;font-weight:900;letter-spacing:.01em}
.lede{color:var(--sub);font-size:17px;max-width:820px;margin:0}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.chip{font-size:13px;padding:5px 12px;border-radius:999px;border:1px solid var(--line);background:var(--panel);color:var(--sub)}

/* method strip */
.method{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:40px 0 0}
.method div{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px 24px}
.method b{display:block;font-size:15px;letter-spacing:.16em;color:var(--accent);margin-bottom:4px}
.method span{font-size:17px;color:var(--ink)}
@media (max-width:720px){.method div{padding:14px;border-radius:12px}.method b{font-size:12px}.method span{font-size:14px;color:var(--sub)}}

/* section title */
.sec{padding-top:40px;padding-bottom:10px}
.sec h2{font-size:24px;margin:0 0 6px}
.sec p.desc{color:var(--sub);margin:0 0 22px}

/* case cards */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
@media (max-width:1040px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
.card{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;text-decoration:none;transition:transform .2s,border-color .2s,background .2s}
.card:hover{transform:translateY(-3px);border-color:rgba(255,255,255,.22);background:var(--panel-2)}
.card .thumb{aspect-ratio:16/9;background:#1a1c23;overflow:hidden;position:relative}
.card .thumb img{width:100%;height:100%;object-fit:cover;opacity:.92}
.card .thumb.diagram{display:flex;align-items:center;justify-content:center;padding:18px}
.card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:6px;flex:1}
.tag{align-self:flex-start;font-size:12px;letter-spacing:.08em;padding:2px 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent)}
.card h3{margin:4px 0 0;font-size:19px;line-height:1.45}
.card p{margin:0;color:var(--sub);font-size:14.5px}
.card .more{margin-top:auto;padding-top:8px;font-size:14px;color:var(--blue)}

/* mini diagram used in cards */
.mini-flow{display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:center}
.mini-flow span{font-size:13px;padding:6px 10px;border-radius:8px;background:rgba(255,255,255,.07);border:1px solid var(--line)}
.mini-flow i{font-style:normal;color:var(--faint)}

/* other works */
.others{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.other{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.other img{aspect-ratio:16/9;object-fit:cover;width:100%}
.other .body{padding:16px 20px 20px}
.other h3{margin:0 0 6px;font-size:18px}
.other p{margin:0;color:var(--sub);font-size:14.5px}
.other ul{margin:8px 0 0;padding-left:1.2em;color:var(--sub);font-size:14.5px}

/* case page */
.case-hero{padding:56px 0 18px}
.back{display:inline-block;font-size:14px;color:var(--sub);text-decoration:none;margin-bottom:26px}
.back:hover{color:var(--ink)}
.meta{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:28px 0 0}
.meta div{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.meta b{display:block;font-size:12px;letter-spacing:.16em;color:var(--faint);font-weight:500}
.meta span{font-size:14.5px}
.tldr{margin:26px 0 0;padding:18px 20px;border-left:3px solid var(--accent);background:var(--accent-soft);border-radius:0 12px 12px 0}
.tldr b{color:var(--accent)}

.block{padding:34px 0 6px}
.block h2{font-size:22px;margin:0 0 4px;display:flex;align-items:baseline;gap:12px}
.block h2 small{font-size:12px;letter-spacing:.24em;color:var(--accent);font-weight:500}
.block p{margin:12px 0}
.block ul,.block ol{padding-left:1.25em}
.block li{margin:6px 0}
.muted{color:var(--sub)}

.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;margin:16px 0}
.decision{display:grid;grid-template-columns:44px minmax(0,1fr);gap:14px;padding:18px 0;border-bottom:1px dashed var(--line)}
.decision:last-child{border-bottom:0}
.decision .n{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:var(--accent-soft);color:var(--accent);font-weight:700;font-size:15px}
.decision h3{margin:4px 0 6px;font-size:17px}
.decision p{margin:4px 0;color:var(--sub)}
.decision p b{color:var(--ink);font-weight:500}

/* timeline / phases */
.phases{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:16px 0}
.phase{border-radius:14px;padding:16px;border:1px solid var(--line);background:var(--panel)}
.phase .w{font-size:12px;letter-spacing:.14em;color:var(--faint)}
.phase h4{margin:4px 0 8px;font-size:16px}
.phase ul{margin:0;padding-left:1.1em;font-size:14px;color:var(--sub)}
.phase.p1{border-top:3px solid var(--blue)}
.phase.p2{border-top:3px solid var(--green)}
.phase.p3{border-top:3px solid var(--accent)}

.steps{display:flex;flex-direction:column;gap:0;margin:16px 0;position:relative}
.step{display:grid;grid-template-columns:28px minmax(0,1fr);gap:16px;position:relative;padding-bottom:22px}
.step:before{content:"";position:absolute;left:13px;top:28px;bottom:0;width:2px;background:var(--line)}
.step:last-child:before{display:none}
.step .dot{width:28px;height:28px;border-radius:50%;background:var(--bg2);border:2px solid var(--accent);
  display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--accent);font-weight:700}
.step h4{margin:0 0 4px;font-size:16px}
.step p{margin:0;color:var(--sub);font-size:15px}

.flowline{display:flex;align-items:stretch;gap:8px;flex-wrap:wrap;margin:16px 0}
.flowline .f{flex:1 1 150px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.flowline .f b{display:block;font-size:12px;letter-spacing:.14em;color:var(--accent)}
.flowline .f span{font-size:14.5px}
.flowline .arr{align-self:center;color:var(--faint)}

table{width:100%;border-collapse:collapse;font-size:14.5px;margin:12px 0}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--faint);font-weight:500;font-size:13px;letter-spacing:.06em}
.ok{color:var(--green)} .ng{color:#ff8a8a}
.num{font-variant-numeric:tabular-nums;white-space:nowrap}
.tablewrap{overflow-x:auto}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:16px 0}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px}
.stat b{display:block;font-size:26px;font-weight:900;color:var(--ink);line-height:1.2}
.stat span{font-size:13px;color:var(--sub)}

figure{margin:18px 0}
figure img{border-radius:12px;border:1px solid var(--line);width:100%}
figcaption{font-size:13px;color:var(--faint);margin-top:8px}
.figs{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.figs figure{margin:0}
.video{position:relative;aspect-ratio:16/9;border-radius:12px;overflow:hidden;border:1px solid var(--line);margin:18px 0}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

.todo{background:rgba(255,212,92,.12);color:var(--todo);border:1px dashed rgba(255,212,92,.55);border-radius:6px;padding:1px 6px;font-size:.93em}
.quote{font-size:19px;font-weight:700;line-height:1.6;margin:16px 0;padding:0 0 0 16px;border-left:3px solid var(--blue)}
.btn{display:inline-block;margin-top:14px;padding:9px 16px;border-radius:10px;background:var(--accent-soft);color:var(--accent);
  text-decoration:none;font-size:14.5px;border:1px solid rgba(240,138,108,.35)}
.btn:hover{background:rgba(240,138,108,.22)}
.next{display:flex;justify-content:space-between;gap:12px;margin:40px 0 0;padding:20px 0;border-top:1px solid var(--line);font-size:14.5px}
.next a{text-decoration:none;color:var(--sub)} .next a:hover{color:var(--ink)}

footer{padding-top:48px;padding-bottom:64px;color:var(--faint);font-size:14px;text-align:center}
footer a{color:var(--sub)}

@media (max-width:720px){
  .nav-links{display:none}
  .hero{padding-top:48px;padding-bottom:28px}
  .method,.meta,.stats{grid-template-columns:repeat(2,1fr)}
  .cards,.others,.figs,.phases{grid-template-columns:1fr}
  .flowline .arr{display:none}
}

/* ── v2: outcome (X/Y/Z) ── */
.xyz{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:26px 0 0}
.xyz div{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 16px;font-size:14.5px;line-height:1.7}
.xyz div:first-child{background:var(--accent-soft);border-color:rgba(240,138,108,.35)}
.xyz b{display:block;font-size:12px;letter-spacing:.18em;color:var(--accent);font-weight:500;margin-bottom:2px}

/* ── v2: timeline ── */
.tl{margin:18px 0 6px}
.tl-i{display:grid;grid-template-columns:112px minmax(0,1fr);gap:16px}
.tl-i .when{font-size:13px;color:var(--accent);font-weight:700;text-align:right;padding-top:3px;font-variant-numeric:tabular-nums;line-height:1.5}
.tl-i .what{border-left:2px solid var(--line);padding:0 0 22px 20px;position:relative}
.tl-i:last-child .what{padding-bottom:4px}
.tl-i .what:before{content:"";position:absolute;left:-8px;top:5px;width:14px;height:14px;border-radius:50%;background:var(--bg);border:2px solid var(--accent)}
.tl-i.gate .what:before{background:var(--yellow);border-color:var(--yellow)}
.tl-i.gate .when{color:var(--yellow)}
.tl-i h4{margin:0 0 2px;font-size:16px}
.tl-i p{margin:0;color:var(--sub);font-size:14.5px}

/* ── v2: problem → solution → result ── */
.ps{border:1px solid var(--line);background:var(--panel);border-radius:14px;margin:14px 0;overflow:hidden}
.ps h3{margin:0;padding:13px 18px;font-size:16.5px;border-bottom:1px solid var(--line);display:flex;gap:10px;align-items:baseline}
.ps h3 i{font-style:normal;font-size:12px;color:var(--faint);font-weight:500;letter-spacing:.08em}
.ps .row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
.ps .row>div{padding:13px 18px;font-size:14.5px;color:var(--sub);line-height:1.75}
.ps .row>div+div{border-left:1px solid var(--line)}
.ps .row b{color:var(--ink);font-weight:500}
.ps .l{display:block;font-size:11.5px;letter-spacing:.18em;font-weight:700;margin-bottom:3px}
.ps .l.q{color:#ff9a8a} .ps .l.s{color:var(--blue)} .ps .l.r{color:var(--green)}
.ps .extra{padding:4px 18px 16px;border-top:1px solid var(--line)}
.card .kpi{font-size:13px;color:var(--green);margin-top:2px}

@media (max-width:720px){
  .xyz{grid-template-columns:1fr}
  .tl-i{grid-template-columns:1fr;gap:0}
  .tl-i .when{text-align:left;padding:0 0 2px 20px;border-left:2px solid var(--line)}
  .ps .row{grid-template-columns:1fr}
  .ps .row>div+div{border-left:0;border-top:1px solid var(--line)}
}

/* ── v3: thumbs + lightbox ── */
.other .thumbs{display:grid;grid-template-columns:1fr 1fr;gap:2px;background:var(--line)}
.other .thumbs img{aspect-ratio:16/9;object-fit:cover;width:100%}
img.zoomable{cursor:zoom-in}
.lb{position:fixed;inset:0;z-index:100;background:rgba(6,7,10,.92);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  display:none;align-items:center;justify-content:center;padding:56px 12px 44px}
.lb.open{display:flex}
.lb img{max-width:100%;max-height:100%;object-fit:contain;border-radius:8px;box-shadow:0 20px 60px rgba(0,0,0,.5);cursor:default}
.lb button{position:absolute;border:1px solid var(--line);background:rgba(255,255,255,.08);color:var(--ink);
  width:44px;height:44px;border-radius:50%;font-size:22px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}
.lb button:hover{background:rgba(255,255,255,.18)}
.lb .x{top:10px;right:12px;font-size:18px}
.lb .pv{left:12px;top:50%;transform:translateY(-50%)} .lb .nx{right:12px;top:50%;transform:translateY(-50%)}
.lb:not(.multi) .pv,.lb:not(.multi) .nx{display:none}
.lb .cap{position:absolute;bottom:12px;left:0;right:0;text-align:center;font-size:13px;color:var(--sub);padding:0 16px}
@media (max-width:720px){.lb .pv,.lb .nx{top:auto;bottom:6px;transform:none}.lb .cap{bottom:58px}}
.btn+.btn{margin-left:8px}

/* key decision */
.ps.key{border:1px solid rgba(240,138,108,.55);background:linear-gradient(180deg,rgba(240,138,108,.10),rgba(240,138,108,.03));box-shadow:0 0 0 1px rgba(240,138,108,.08) inset}
.ps.key h3{font-size:19px;padding:16px 20px;flex-wrap:wrap;border-bottom-color:rgba(240,138,108,.25)}
.ps .kb{display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.14em;color:#1a0f0b;background:var(--accent);border-radius:999px;padding:2px 10px;margin-right:2px}
.ps.key .row{grid-template-columns:repeat(2,minmax(0,1fr))}
.ps.key .row>div{font-size:15px;color:var(--ink)}
.ps.key .row>div:nth-child(odd){border-left:0}
.ps.key .row>div:nth-child(n+3){border-top:1px solid rgba(240,138,108,.2)}
.ps .l.t{color:var(--yellow)}
@media (max-width:760px){.ps.key .row{grid-template-columns:1fr}.ps.key .row>div+div{border-top:1px solid rgba(240,138,108,.2)}}
.ps.key .row>div:last-child:nth-child(odd){grid-column:1/-1}