:root{
  --bg:#fff; --bg-2:#fafafa; --bg-3:#f4f4f4;
  --ink:#0a0a0a; --mute:#5b5b5b; --line:#ececec;
  --y:#FFD60A; --y-d:#f5c400; --y-l:#fff7c2;
  --shadow-sm:0 4px 16px rgba(0,0,0,.04);
  --shadow:0 12px 40px rgba(0,0,0,.07);
  --r:16px; --ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{font-family:"Inter","Noto Sans TC",system-ui,sans-serif;color:var(--ink);background:var(--bg);
  line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.container-sm{max-width:880px;margin:0 auto;padding:0 24px}

/* ===== NAV ===== */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);
  backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{font-weight:800;letter-spacing:-.02em;font-size:1.3rem;display:flex;align-items:center;gap:6px}
.brand .dot{display:inline-block;width:10px;height:10px;background:var(--y);border-radius:50%;
  box-shadow:0 0 0 4px var(--y-l);animation:pulse 2.4s var(--ease) infinite}
@keyframes pulse{50%{box-shadow:0 0 0 8px rgba(255,214,10,.15)}}
.menu{display:flex;gap:12px;list-style:none;white-space:nowrap}
.menu a{position:relative;font-weight:500;font-size:.78rem;padding:6px 0;color:#222;transition:color .3s}
.nav-inner nav{overflow-x:auto;max-width:calc(100% - 300px);-webkit-overflow-scrolling:touch;scrollbar-width:none}
.nav-inner nav::-webkit-scrollbar{display:none}
.menu a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--y-d);transition:width .4s var(--ease)}
.menu a:hover::after,.menu a.active::after{width:100%}
.menu a.active{color:#000;font-weight:700}
.nav-cta{display:flex;align-items:center;gap:14px}

.burger{display:none;width:46px;height:46px;border:1px solid var(--line);border-radius:14px;background:#fff;position:relative;
  transition:transform .45s var(--ease),background .3s,border-color .3s}
.burger:hover{background:var(--y);border-color:var(--y-d);transform:rotate(90deg)}
.burger span{position:absolute;left:50%;top:50%;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .5s var(--ease),opacity .3s}
.burger span:nth-child(1){transform:translate(-50%,-7px)}
.burger span:nth-child(2){transform:translate(-50%,-50%)}
.burger span:nth-child(3){transform:translate(-50%,5px)}
.burger.open{transform:rotate(180deg);background:var(--y)}
.burger.open span:nth-child(1){transform:translate(-50%,-50%) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0;transform:translate(-50%,-50%) scale(.2)}
.burger.open span:nth-child(3){transform:translate(-50%,-50%) rotate(-45deg)}

.drawer{position:fixed;inset:74px 0 0 0;background:#fff;transform:translateY(-110%);
  transition:transform .6s var(--ease);z-index:40;padding:32px 24px;overflow-y:auto}
.drawer.open{transform:translateY(0)}
.drawer ul{list-style:none;display:flex;flex-direction:column;gap:6px}
.drawer a{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-radius:14px;font-size:1.2rem;font-weight:600;border:1px solid transparent;transition:all .35s var(--ease)}
.drawer a::after{content:"→";opacity:0;transition:opacity .3s,transform .3s}
.drawer a:hover{background:var(--y);border-color:var(--y-d);transform:translateX(8px)}
.drawer a:hover::after{opacity:1;transform:translateX(4px)}

/* === Buttons === */
.btn{display:inline-flex;align-items:center;gap:10px;padding:13px 24px;border-radius:999px;font-weight:600;font-size:.95rem;border:1px solid var(--ink);
  transition:transform .35s var(--ease),background .3s,color .3s,box-shadow .3s}
.btn:hover{transform:translateY(-3px)}
.btn-primary{background:var(--y);border-color:var(--y);color:#000}
.btn-primary:hover{background:var(--y-d);box-shadow:0 12px 30px rgba(245,196,0,.35)}
.btn-ghost{background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn .arr{display:inline-block;transition:transform .3s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}

/* === Common === */
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;background:var(--y);padding:7px 14px;border-radius:6px;color:#000}
h1.page{font-size:clamp(2.6rem,7vw,5.4rem);font-weight:800;letter-spacing:-.04em;line-height:1.04}
h1.page em{font-style:italic;font-family:"Playfair Display",serif;font-weight:700}
h1.page mark{background:var(--y);padding:0 .12em;border-radius:10px}
h2{font-size:clamp(1.9rem,4.2vw,3rem);font-weight:800;letter-spacing:-.025em;line-height:1.12;margin:18px 0 22px}
.lede{font-size:1.1rem;color:var(--mute);max-width:640px}
section{padding:90px 0}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:48px;flex-wrap:wrap}

/* Reveal */
.reveal{opacity:0;transform:translateY(40px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal-d2{transition-delay:.12s}
.reveal-d3{transition-delay:.24s}
.reveal-d4{transition-delay:.36s}

/* ===== HERO ===== */
.hero{padding:110px 0 50px;position:relative;overflow:hidden;text-align:center}
.hero .blob{position:absolute;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,var(--y-l) 0%,transparent 70%);filter:blur(50px);
  z-index:-1;left:50%;top:-180px;transform:translateX(-50%);animation:blob 14s var(--ease) infinite}
@keyframes blob{50%{transform:translate(calc(-50% + 30px),40px) scale(1.1)}}
.hero p.lede{margin:28px auto 0}

/* ===== TABS ===== */
.tabs-wrap{position:sticky;top:74px;z-index:30;background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(0,0,0,.02)}
.tabs{display:flex;gap:6px;padding:0;position:relative;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{padding:22px 4px;font-weight:600;font-size:1rem;color:var(--mute);position:relative;white-space:nowrap;
  transition:color .35s var(--ease);background:transparent;flex-shrink:0;margin-right:30px}
.tab:hover{color:#000}
.tab.active{color:#000}
.tab .small{font-size:.7rem;color:var(--mute);font-weight:600;letter-spacing:.1em;text-transform:uppercase;display:block}
.tab.active .small{color:var(--y-d)}
.tab-indicator{position:absolute;bottom:0;height:3px;background:var(--y-d);border-radius:3px 3px 0 0;
  transition:left .5s var(--ease),width .5s var(--ease);box-shadow:0 0 8px rgba(245,196,0,.5)}

/* === Tab panels === */
.panels{padding:60px 0}
.panel{display:none;animation:fadeUp .6s var(--ease)}
.panel.active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}

/* === Strategy hero (per panel) === */
.s-hero{display:grid;grid-template-columns:1.3fr 1fr;gap:60px;align-items:center;margin-bottom:60px}
.s-hero h2{margin-top:14px}
.s-hero .quote{font-family:"Playfair Display",serif;font-style:italic;font-size:1.1rem;
  color:#222;border-left:4px solid var(--y);padding:14px 20px;margin-top:20px;background:var(--bg-2);border-radius:0 12px 12px 0}
.s-hero .quote span{display:block;font-family:"Inter",sans-serif;font-style:normal;font-size:.85rem;color:var(--mute);margin-top:8px}
.s-hero .visual{aspect-ratio:1;background:var(--bg-2);border:1px solid var(--line);border-radius:24px;
  position:relative;overflow:hidden;display:grid;place-items:center}
.s-hero .visual .big{font-family:"Playfair Display",serif;font-style:italic;font-weight:700;
  font-size:8rem;color:var(--y-d);letter-spacing:-.04em;line-height:1}
.s-hero .visual .ring{position:absolute;border:2px dashed var(--ink);border-radius:50%;
  width:80%;height:80%;animation:spin 30s linear infinite;opacity:.2}
@keyframes spin{to{transform:rotate(360deg)}}

/* === Pillars grid === */
.pillars{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:0;
  border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff;margin-bottom:60px}
.pillar{padding:34px 30px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  position:relative;transition:background .35s var(--ease)}
.pillar:hover{background:var(--y-l)}
.pillar::before{content:"";position:absolute;left:0;top:0;width:3px;height:0;background:var(--y);transition:height .5s var(--ease)}
.pillar:hover::before{height:100%}
.pillar .icon{width:48px;height:48px;border-radius:12px;background:var(--y);display:grid;place-items:center;font-size:1.3rem;font-weight:800}
.pillar h3{margin:16px 0 10px;font-size:1.1rem;font-weight:700}
.pillar p{font-size:.92rem;color:var(--mute)}

/* === Pros/Cons === */
.proscons{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:60px}
.pc{padding:30px;border-radius:18px;border:1px solid var(--line);background:#fff}
.pc.pros{background:var(--y-l);border-color:var(--y)}
.pc.cons{background:#fff}
.pc h3{font-size:1.05rem;letter-spacing:-.01em;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.pc h3::before{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:.85rem;font-weight:800}
.pc.pros h3::before{content:"✓";background:#000;color:var(--y)}
.pc.cons h3::before{content:"✗";background:#000;color:#fff}
.pc ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.pc li{padding-left:18px;position:relative;font-size:.95rem;color:#222}
.pc li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:#000}

/* === Case study === */
.case{background:var(--ink);color:#fff;border-radius:24px;padding:50px 44px;margin-bottom:60px;position:relative;overflow:hidden}
.case::before{content:"CASE STUDY";position:absolute;top:24px;left:30px;font-size:.72rem;letter-spacing:.2em;color:var(--y);font-weight:800}
.case h3{font-size:clamp(1.4rem,3vw,2rem);margin-top:30px;margin-bottom:14px;letter-spacing:-.02em;font-weight:800}
.case p{color:#bbb;margin-bottom:18px;font-size:1rem;max-width:780px}
.case .stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:24px;margin-top:28px;padding-top:28px;border-top:1px solid #2a2a2a}
.case .stats div b{font-size:1.8rem;font-weight:800;color:var(--y);display:block;letter-spacing:-.02em}
.case .stats div span{font-size:.82rem;color:#999;margin-top:4px;display:block}

/* === Process steps === */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:0;margin-bottom:60px;
  border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff}
.step{padding:30px 26px;border-right:1px solid var(--line);position:relative;transition:background .35s}
.step:hover{background:var(--bg-2)}
.step .n{font-family:"Playfair Display",serif;font-style:italic;font-size:2.4rem;color:var(--y-d);font-weight:700;line-height:1}
.step h4{margin:12px 0 8px;font-size:1.05rem;font-weight:700}
.step p{font-size:.9rem;color:var(--mute)}
.step::after{content:"→";position:absolute;right:-10px;top:50%;transform:translateY(-50%);
  background:var(--y);width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:.7rem;font-weight:800;z-index:2}
.step:last-child::after{display:none}

/* ===== Comparison table ===== */
.compare{margin-top:30px;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:#fff}
.compare table{width:100%;border-collapse:collapse;font-size:.95rem}
.compare th,.compare td{padding:18px 20px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.compare thead th{background:#000;color:#fff;font-weight:700;font-size:.85rem;letter-spacing:.05em;text-transform:uppercase}
.compare thead th:first-child{background:#0a0a0a}
.compare thead th.h-y{background:var(--y);color:#000}
.compare tbody th{background:var(--bg-2);font-weight:700;width:160px;color:#222}
.compare tbody tr:hover td,.compare tbody tr:hover th{background:var(--y-l)}
.compare tbody tr:last-child td,.compare tbody tr:last-child th{border-bottom:none}
.compare .dot{display:inline-flex;gap:3px}
.compare .dot i{width:10px;height:10px;border-radius:50%;background:var(--bg-3);display:inline-block}
.compare .dot i.on{background:var(--y-d)}

/* === Recommended profile === */
.profile{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px;margin-top:30px}
.persona{padding:30px;border:1px solid var(--line);border-radius:18px;background:#fff;transition:transform .4s var(--ease),box-shadow .4s,border-color .3s}
.persona:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--y)}
.persona .av{width:60px;height:60px;border-radius:50%;background:var(--y);display:grid;place-items:center;font-size:1.5rem;font-weight:800}
.persona h4{margin:14px 0 4px;font-size:1.1rem}
.persona .role{font-size:.82rem;color:var(--mute);text-transform:uppercase;letter-spacing:.12em;font-weight:700}
.persona p{margin-top:14px;font-size:.93rem;color:#222}
.persona .tag{display:inline-block;margin-top:14px;padding:6px 12px;background:var(--y-l);border-radius:99px;font-size:.78rem;font-weight:700}

/* === FAQ === */
.faq{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line);padding:22px 0}
.faq-q{display:flex;justify-content:space-between;align-items:center;gap:20px;cursor:pointer;font-weight:600;font-size:1.05rem}
.faq-q .ico{width:34px;height:34px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;flex-shrink:0;transition:transform .4s var(--ease),background .3s,border-color .3s}
.faq-item.open .faq-q .ico{transform:rotate(45deg);background:var(--y);border-color:var(--y-d)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .5s var(--ease),margin .4s}
.faq-item.open .faq-a{max-height:300px;margin-top:14px}
.faq-a p{color:var(--mute);font-size:.96rem}

/* === CTA === */
.cta-band{background:var(--y);border-radius:24px;padding:54px 44px;display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center}
.cta-band h2{margin:0}
.cta-band a.btn{background:#000;color:var(--y);border-color:#000}

/* Footer */
footer{background:var(--ink);color:#eaeaea;padding:72px 0 28px;margin-top:80px}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
footer h5{font-size:.85rem;letter-spacing:.12em;text-transform:uppercase;color:#fff;margin-bottom:18px}
footer ul{list-style:none;display:flex;flex-direction:column;gap:10px}
footer a{color:#bdbdbd;font-size:.92rem;transition:color .3s}
footer a:hover{color:var(--y)}
.f-bottom{margin-top:48px;padding-top:24px;border-top:1px solid #222;display:flex;justify-content:space-between;color:#999;font-size:.85rem;flex-wrap:wrap;gap:12px}

/* Responsive */
@media(max-width:980px){
  .s-hero{grid-template-columns:1fr;gap:40px}
  .proscons{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:40px 28px}
  .f-grid{grid-template-columns:repeat(2,1fr)}
  .step::after{display:none}
}
@media(max-width:860px){
  .menu,.nav-cta .btn{display:none}
  .burger{display:block}
  section{padding:64px 0}
  .compare{overflow-x:auto}
  .compare table{min-width:680px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}