/* Synthelle website UI kit — layout on top of brand tokens */
@import url("colors_and_type.css");

*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg-0);color:var(--fg-1);font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}
.band{padding:var(--space-band) 0}
.hairline{height:1px;background:var(--border);width:100%}

/* film grain + faint system grid overlay */
.grain::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.04;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

/* ---- bilingual: default shows both; [data-lang=zh] flips emphasis ---- */
.zh{font-family:var(--font-cjk-body);color:var(--fg-cjk)}
.en-led .zh{font-size:.82em}
[data-lang="zh"] .swap-en{opacity:.5;font-size:.8em}
[data-lang="zh"] .swap-zh{color:var(--fg-1)}

/* ---- nav ---- */
.nav{position:sticky;top:0;z-index:40;backdrop-filter:blur(16px) saturate(1.1);
  background:linear-gradient(180deg,rgba(7,9,8,.72),rgba(7,9,8,.32));border-bottom:1px solid var(--border)}
.nav .inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.nav .logo{display:flex;align-items:center;gap:11px;cursor:pointer}
.nav .sbox{width:24px;height:30px;border:1.4px solid var(--accent);display:flex;align-items:center;justify-content:center}
.nav .sbox span{font-family:var(--font-display);font-size:24px;font-weight:500;color:var(--accent);line-height:1}
.nav .wm{font-family:var(--font-display);font-size:26px;font-weight:500;color:var(--fg-1);letter-spacing:.01em}
.nav .links{display:flex;gap:30px;align-items:center}
.nav .links a{font-size:13.5px;color:var(--fg-2);cursor:pointer;position:relative;padding:4px 0;transition:color .25s}
.nav .links a .zh{font-size:11px;margin-left:5px}
.nav .links a:hover,.nav .links a.active{color:var(--fg-1)}
.nav .links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--accent)}
.langtog{display:flex;border:1px solid var(--border-strong);border-radius:var(--r-pill);overflow:hidden;font-family:var(--font-mono);font-size:11px;letter-spacing:.06em}
.langtog button{background:none;border:0;color:var(--fg-3);padding:6px 12px;cursor:pointer;transition:all .25s}
.langtog button.on{background:var(--glass-gold-16);color:var(--accent)}

/* ---- eyebrow ---- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:22px}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;gap:9px;font-family:var(--font-body);font-size:14px;font-weight:500;
  border-radius:var(--r-sm);padding:14px 24px;border:1px solid transparent;cursor:pointer;letter-spacing:.01em;
  transition:all .3s cubic-bezier(.22,1,.36,1)}
.btn .zh{font-size:12px;opacity:.7}
.btn-primary{background:var(--accent);color:#0b0d0c;border-color:var(--accent)}
.btn-primary:hover{background:#e6bf78;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--fg-1);border-color:var(--border-strong)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn:active{transform:scale(.99)}

/* ---- hero ---- */
.hero{position:relative;min-height:92vh;display:flex;align-items:flex-end;overflow:hidden}
.hero .bg{position:absolute;inset:0}
.hero .bg img{width:100%;height:100%;object-fit:cover;animation:kb 28s ease-in-out infinite alternate}
@keyframes kb{from{transform:scale(1.02)}to{transform:scale(1.12)}}
.hero .scrim{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,9,8,.55) 0%,rgba(7,9,8,.12) 35%,rgba(7,9,8,.82) 100%)}
.hero .inner{position:relative;z-index:2;padding-bottom:7vh;max-width:920px}
.hero h1{font-family:var(--font-display);font-size:var(--step-hero);font-weight:500;line-height:.94;margin:0 0 24px}
.hero .sub{font-size:21px;line-height:1.5;color:var(--fg-1);max-width:680px;margin:0 0 14px;font-weight:360}
.hero .sub .zh{display:block;font-size:15px;margin-top:8px}
.hero .cta{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}
.hero .tags{display:flex;gap:10px;margin-top:34px;flex-wrap:wrap}
.tagchip{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:var(--r-pill);
  background:var(--glass-ivory-06);backdrop-filter:blur(10px);border:1px solid var(--border);font-size:12.5px;color:var(--fg-2)}
.tagchip .dot{width:7px;height:7px;border-radius:999px;background:var(--positive)}

/* ---- section heads ---- */
.shead{max-width:820px;margin-bottom:54px}
.shead h2{font-family:var(--font-display);font-size:var(--step-h2);font-weight:500;line-height:1.06;margin:0}
.shead h2 .zh{display:block;font-size:.5em;color:var(--fg-cjk);margin-top:12px}
.shead p{font-size:17px;line-height:1.6;color:var(--fg-2);margin:20px 0 0;max-width:680px}

/* ---- numbered steps ---- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.step .n{font-family:var(--font-mono);font-size:14px;color:var(--accent);letter-spacing:.1em}
.step h4{font-family:var(--font-display);font-size:22px;font-weight:600;margin:16px 0 10px;line-height:1.15}
.step h4 .zh{display:block;font-size:14px;font-weight:400;color:var(--fg-cjk);margin-top:3px}
.step p{font-size:14px;color:var(--fg-2);line-height:1.55;margin:0}
.step{border-top:1px solid var(--border);padding-top:18px}

/* ---- market map ---- */
.market{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.market.four{grid-template-columns:repeat(4,1fr)}
.mcard{background:var(--bg-1);border:1px solid var(--border);border-radius:var(--r-md);padding:28px 26px;position:relative;overflow:hidden}
.mcard.me{border-color:var(--border-accent);background:linear-gradient(180deg,var(--glass-gold-08),var(--bg-1))}
.mcard .stk{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3);display:flex;justify-content:space-between}
.mcard.me .stk{color:var(--accent)}
.mcard h3{font-family:var(--font-display);font-size:25px;font-weight:600;margin:18px 0 14px;line-height:1.1}
.mcard h3 .zh{display:block;font-size:14px;font-weight:400;color:var(--fg-cjk);margin-top:4px}
.mcard p{font-size:14px;color:var(--fg-2);line-height:1.55;margin:0 0 18px}
.mrow{display:flex;gap:9px;align-items:flex-start;font-size:12.5px;color:var(--fg-2);padding:8px 0;border-top:1px solid var(--border)}
.mrow .ic{color:var(--positive);flex:none;margin-top:1px}
.mrow.neg .ic{color:var(--editorial)}

/* ---- funnel ownership ---- */
.funnel{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;align-items:stretch}
.funnel-stage{position:relative;border:1px solid var(--border);border-radius:var(--r-md);background:var(--bg-1);padding:20px 16px;min-height:150px;overflow:hidden}
.funnel-stage::after{content:"";position:absolute;right:-8px;top:50%;width:16px;height:16px;border-top:1px solid var(--border);border-right:1px solid var(--border);transform:translateY(-50%) rotate(45deg);background:var(--bg-1);z-index:2}
.funnel-stage:last-child::after{display:none}
.funnel-stage.active{border-color:var(--border-accent);background:linear-gradient(180deg,var(--glass-gold-08),var(--bg-1))}
.funnel-stage.active::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--accent)}
.funnel-stage .n{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3)}
.funnel-stage.active .n{color:var(--accent)}
.funnel-stage h4{font-family:var(--font-display);font-size:22px;font-weight:600;margin:18px 0 9px;line-height:1.08}
.funnel-stage p{font-size:13px;line-height:1.45;color:var(--fg-2);margin:0}
.ownership-note{display:grid;grid-template-columns:.55fr 1.2fr 1fr;gap:14px;align-items:center;margin-top:16px;border:1px solid var(--border-accent);border-radius:var(--r-md);padding:16px 18px;background:var(--glass-gold-08)}
.ownership-note span,.ownership-note em{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-style:normal}
.ownership-note strong{font-family:var(--font-display);font-size:22px;font-weight:600;color:var(--fg-1)}
.ownership-note em{color:var(--fg-3);text-align:right}

/* ---- economics ---- */
.econ-grid{display:grid;grid-template-columns:1.25fr .9fr .9fr;gap:18px}
.econ-card{border:1px solid var(--border);border-radius:var(--r-md);background:var(--bg-1);padding:26px;min-height:220px;display:flex;flex-direction:column;justify-content:space-between}
.econ-card.lead{border-color:var(--border-accent);background:linear-gradient(180deg,var(--glass-gold-08),var(--bg-1))}
.econ-card .mono,.mono{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--fg-3)}
.econ-card strong{font-family:var(--font-display);font-size:56px;line-height:.95;font-weight:600;color:var(--accent);margin:24px 0 18px}
.econ-card p{font-size:14px;line-height:1.55;color:var(--fg-2);margin:0}
.fineprint{font-family:var(--font-mono);font-size:11px;letter-spacing:.05em;color:var(--fg-3);margin:18px 0 0;max-width:760px}

/* ---- proof gate ---- */
.proofgrid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:14px}
.proofcard{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--border);min-height:300px;display:flex;align-items:flex-end;cursor:pointer}
.proofcard img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.62) saturate(.85);transition:transform .6s cubic-bezier(.22,1,.36,1),filter .6s}
.proofcard:hover img{transform:scale(1.05);filter:brightness(.74) saturate(.95)}
.proofcard .scrim{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,9,8,.1),rgba(7,9,8,.9))}
.proofcard .c{position:relative;z-index:2;padding:28px}
.proofcard h4{font-family:var(--font-display);font-size:34px;font-weight:600;margin:0 0 8px}
.proofcard p{font-size:14px;color:var(--fg-2);max-width:340px;line-height:1.5;margin:0 0 18px}
.gatebtn{display:inline-flex;align-items:center;gap:9px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);
  border:1px solid var(--border-accent);border-radius:var(--r-pill);padding:9px 16px;background:rgba(7,9,8,.4);backdrop-filter:blur(8px)}
.lockwarn{position:absolute;top:20px;right:20px;z-index:2;display:inline-flex;align-items:center;gap:7px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-paper)}

/* ---- footer ---- */
.foot{border-top:1px solid var(--border);padding:56px 0 40px}
.foot .top{display:flex;justify-content:space-between;align-items:flex-start;gap:40px;flex-wrap:wrap}
.foot .wm{font-family:var(--font-display);font-size:40px;font-weight:500;color:var(--fg-1)}
.foot .cols{display:flex;gap:60px;flex-wrap:wrap}
.foot .col a{display:block;font-size:13.5px;color:var(--fg-2);margin-bottom:11px;cursor:pointer}
.foot .col a:hover{color:var(--accent)}
.foot .col .h{font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3);margin-bottom:16px}
.foot .legal{margin-top:48px;font-size:12px;color:var(--fg-3);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}

/* generic image-band */
.imgband{position:relative;height:62vh;overflow:hidden;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.imgband img{width:100%;height:100%;object-fit:cover}
.imgband .scrim{position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,9,8,.85) 0%,rgba(7,9,8,.15) 60%,rgba(7,9,8,.5))}
.imgband .c{position:absolute;inset:0;display:flex;align-items:center}
.imgband .c .wrap{width:100%}
.imgband blockquote{margin:0;max-width:620px}
.imgband blockquote p{font-family:var(--font-display);font-style:italic;font-size:30px;line-height:1.3;color:var(--ivory-ink);font-weight:500}
.imgband blockquote .zh{font-style:normal;display:block;font-size:16px;margin-top:14px}

@media(max-width:900px){
  .steps{grid-template-columns:repeat(2,1fr)}
  .market,.market.four{grid-template-columns:1fr}
  .funnel{grid-template-columns:1fr}
  .funnel-stage::after{display:none}
  .ownership-note{grid-template-columns:1fr}
  .ownership-note em{text-align:left}
  .econ-grid{grid-template-columns:1fr}
  .proofgrid{grid-template-columns:1fr}
  .nav .links{display:none}
}