:root{
  --bg:#070707; --bg-2:#0c0a07;
  --gold:#d7b06a; --gold-2:#f3dca6; --gold-3:#8a612d; --teal:#72d8c5;
  --text:#f5f0e6; --muted:#8a8378;
  --line:rgba(215,176,106,.18);
  --serif:'Cormorant Garamond', serif;
  --sans:'Noto Sans TC', -apple-system, system-ui, sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--bg);color:var(--text);overflow-x:hidden;line-height:1.7;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;background:linear-gradient(135deg,rgba(215,176,106,.08),transparent 38%),linear-gradient(215deg,rgba(114,216,197,.06),transparent 42%),#070707}
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.035;background-image:linear-gradient(#fff 1px,transparent 1px),linear-gradient(90deg,#fff 1px,transparent 1px);background-size:64px 64px}
a{color:inherit;text-decoration:none}
.container{width:min(1100px,calc(100% - 56px));margin:0 auto}

.header{position:sticky;top:0;z-index:50;background:rgba(7,7,7,.82);backdrop-filter:blur(20px);border-bottom:1px solid var(--line)}
.nav{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:14px;min-width:0}
.logo-mark{width:42px;height:42px;display:inline-block;filter:drop-shadow(0 6px 18px rgba(215,176,106,.42));flex:0 0 auto}
.logo-mark img{width:100%;height:100%;display:block;object-fit:contain}
.brand-title{color:#f3e6c8;font-size:17px;font-weight:600;letter-spacing:.08em;white-space:nowrap}
.brand-subtitle{color:rgba(215,176,106,.92);font-size:9px;letter-spacing:.34em;text-transform:uppercase;margin-top:2px;display:block}
.nav-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}
.back-link{color:#c9c3b6;font-size:12px;letter-spacing:.18em;text-transform:uppercase;transition:color .25s;white-space:nowrap}
.back-link:hover{color:var(--gold-2)}
.lang-switch{display:inline-flex;align-items:center;justify-content:center;min-height:38px;min-width:48px;padding:0 14px;border:1px solid var(--line);border-radius:999px;color:#f3e6c8;background:rgba(255,255,255,.025);font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;transition:.25s}
.lang-switch:hover{border-color:rgba(215,176,106,.48);background:rgba(215,176,106,.08);color:var(--gold-2)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:44px;padding:0 22px;border-radius:999px;border:1px solid rgba(215,176,106,.5);background:linear-gradient(180deg,#e6c587,#c79b54);color:#1a140a;font-weight:700;font-size:13px;letter-spacing:.14em;cursor:pointer;transition:.3s ease;text-align:center}
.btn:hover{transform:translateY(-1px);box-shadow:0 14px 38px rgba(215,176,106,.22)}
.btn-ghost{background:transparent;color:#f3e6c8;border:1px solid var(--line)}
.btn-ghost:hover{background:rgba(215,176,106,.07);border-color:rgba(215,176,106,.4);box-shadow:none}

.s-hero{padding:88px 0 66px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.s-hero::before{content:"";position:absolute;right:0;top:0;width:min(44vw,520px);height:100%;background:linear-gradient(115deg,transparent,rgba(215,176,106,.08));pointer-events:none}
.s-crumb{color:var(--gold);font-size:11px;letter-spacing:.36em;text-transform:uppercase;margin-bottom:24px;display:flex;align-items:center;gap:14px}
.s-crumb::before{content:"";width:36px;height:1px;background:var(--gold)}
.s-hero h1{font-family:var(--sans);font-weight:300;font-size:clamp(36px,5vw,64px);line-height:1.12;letter-spacing:.02em;color:var(--text);max-width:900px}
.s-hero h1 em{font-family:var(--serif);font-style:italic;font-weight:600;background:linear-gradient(110deg,#f6e3b3,#d7b06a 50%,#8a612d);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:0}
.s-hero p.lead{color:#bdb6a8;font-size:17px;line-height:1.9;margin-top:28px;max-width:760px}
.s-meta,.s-stack{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.pill{border:1px solid var(--line);color:#d4cebf;padding:8px 16px;border-radius:999px;font-size:12px;letter-spacing:.12em}
.pill.gold{border-color:rgba(215,176,106,.5);color:var(--gold-2);background:rgba(215,176,106,.06)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}

.s-sec{padding:78px 0;border-bottom:1px solid var(--line)}
.s-sec h2{font-family:var(--sans);font-weight:300;font-size:clamp(28px,3.6vw,42px);line-height:1.18;letter-spacing:.04em;margin-bottom:14px}
.s-sec h2 em{font-family:var(--serif);font-style:italic;font-weight:600;background:linear-gradient(110deg,#f6e3b3,#d7b06a 50%,#8a612d);-webkit-background-clip:text;background-clip:text;color:transparent}
.eyebrow{color:var(--gold);font-size:11px;letter-spacing:.38em;text-transform:uppercase;margin-bottom:14px;display:flex;align-items:center;gap:14px}
.eyebrow::before{content:"";width:30px;height:1px;background:var(--gold)}
.s-sec p.intro{color:#a8a195;line-height:1.95;font-size:15.5px;max-width:760px;margin-bottom:34px}

.s-features,.s-summary{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.s-uses{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.f-card,.u-card,.summary-card{border:1px solid var(--line);border-radius:18px;padding:28px 26px;background:linear-gradient(180deg,rgba(20,16,10,.6),rgba(8,6,4,.5));transition:.3s}
.f-card:hover,.u-card:hover,.summary-card:hover{border-color:rgba(215,176,106,.42);transform:translateY(-3px)}
.f-num,.summary-card .label{font-family:var(--serif);font-style:italic;color:var(--gold);font-size:14px;letter-spacing:.24em;margin-bottom:14px}
.f-card h3,.u-card h4,.summary-card h3{color:#f3e6c8;font-size:18px;letter-spacing:.08em;font-weight:500;margin-bottom:10px;line-height:1.45}
.f-card p,.u-card p,.summary-card p{color:#9b9486;font-size:13.5px;line-height:1.85}
.u-card .tag{color:var(--gold);font-size:11px;letter-spacing:.28em;text-transform:uppercase;margin-bottom:12px}
.summary-card.featured{background:linear-gradient(135deg,rgba(35,24,10,.82),rgba(8,6,4,.55));border-color:rgba(215,176,106,.34)}
.summary-card strong{font-family:var(--serif);font-size:clamp(26px,3.2vw,42px);line-height:1.2;color:var(--gold-2);font-weight:600;display:block;margin-bottom:10px}

.s-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step-card{border:1px solid var(--line);border-radius:18px;padding:24px 22px;background:rgba(15,12,7,.5)}
.step-card .step-num{font-family:var(--serif);font-style:italic;color:var(--teal);font-size:15px;letter-spacing:.24em;margin-bottom:12px}
.step-card h3{color:#f3e6c8;font-size:17px;letter-spacing:.08em;font-weight:500;margin-bottom:10px}
.step-card p{color:#9b9486;font-size:13px;line-height:1.8}

.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.related-card{display:flex;flex-direction:column;justify-content:space-between;min-height:170px;border:1px solid var(--line);border-radius:18px;padding:24px;background:linear-gradient(180deg,rgba(20,16,10,.6),rgba(8,6,4,.45));transition:.3s}
.related-card:hover{border-color:rgba(215,176,106,.42);transform:translateY(-3px)}
.related-card h3{font-size:17px;color:#f3e6c8;letter-spacing:.08em;font-weight:500}
.related-card p{color:#9b9486;font-size:13px;line-height:1.75;margin-top:8px}
.related-card span{display:inline-flex;width:fit-content;margin-top:16px;color:var(--gold-2);font-size:12px;letter-spacing:.16em}

.s-cta{padding:70px 0 90px;text-align:center}
.s-cta .eyebrow{justify-content:center;display:inline-flex}
.s-cta h2{margin-bottom:18px;font-size:clamp(28px,3.6vw,42px);font-weight:300;letter-spacing:.04em}
.s-cta h2 em{font-family:var(--serif);font-style:italic;color:var(--gold-2)}
.s-cta p{color:#b6afa2;font-size:15.5px;line-height:1.9;max-width:620px;margin:0 auto 28px}
.s-cta .actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

.s-footer{border-top:1px solid var(--line);padding:30px 0;color:#9b958a;font-size:11px;letter-spacing:.22em;text-transform:uppercase;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.s-footer a{color:#a8a195;transition:color .2s}
.s-footer a:hover{color:var(--gold-2)}

@media (max-width:980px){
  .nav{align-items:flex-start;flex-direction:column;padding:16px 0}
  .nav-actions{justify-content:flex-start}
  .s-uses,.s-steps,.related-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  .container{width:calc(100% - 32px)}
  .brand-title{font-size:13.5px;letter-spacing:.03em}
  .brand-subtitle{display:none}
  .logo-mark{width:38px;height:38px}
  .nav-actions{width:100%;display:grid;grid-template-columns:1fr 1fr;gap:10px}
  .nav-actions .btn{grid-column:1 / -1;width:100%}
  .back-link,.lang-switch{border:1px solid var(--line);border-radius:999px;text-align:center;padding:10px 12px;font-size:11px;background:rgba(255,255,255,.02)}
  .s-hero{padding:58px 0 48px}
  .s-hero h1{font-size:clamp(30px,8.8vw,40px);overflow-wrap:anywhere}
  .s-hero p.lead{font-size:15px}
  .hero-actions,.s-cta .actions{flex-direction:column}
  .hero-actions .btn,.s-cta .btn{width:100%}
  .s-sec{padding:56px 0}
  .s-features,.s-uses,.s-summary,.s-steps,.related-grid{grid-template-columns:1fr}
  .s-footer{display:grid;grid-template-columns:1fr;letter-spacing:.14em;line-height:1.8}
}