/* Atlantic Holding LLC — one stylesheet for the English and Chinese pages.
   Fonts are self-hosted (no Google Fonts: blocked in mainland China).
   Body text uses the system font, which also covers Chinese. */
@font-face{font-family:"Montserrat";font-style:normal;font-weight:600;font-display:swap;src:url(fonts/montserrat-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Montserrat";font-style:normal;font-weight:700;font-display:swap;src:url(fonts/montserrat-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(fonts/ibm-plex-mono-latin-400-normal.woff2) format("woff2")}

:root{
  --bg:#F4F7F6; --surface:#FFFFFF; --ink:#0F2430; --muted:#55666D; --line:#D6E0DD;
  --leaf:#338459; --leaf-deep:#17442D;
  --night:#0A1A24; --on-night:#E8F1EE; --on-night-muted:#9DB4B3;
  --cjk:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC";
  --head:"Montserrat",var(--cjk),system-ui,sans-serif;
  --body:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,var(--cjk),sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0B171D; --surface:#102229; --ink:#E6EFEC; --muted:#97ABA9; --line:#22363C;
  --leaf:#5DBA88; --leaf-deep:#BFE3CF; color-scheme:dark}}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6}
h1,h2,h3{font-family:var(--head);margin:0;letter-spacing:-.01em;text-wrap:balance}
p{margin:0}
a{color:inherit}
img{max-width:100%}
:focus-visible{outline:2px solid var(--leaf);outline-offset:3px;border-radius:2px}
.nowrap{white-space:nowrap}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.pad{padding-left:max(16px,4vw,env(safe-area-inset-left,0px));padding-right:max(16px,4vw,env(safe-area-inset-right,0px))}
.inner{max-width:1200px;margin-inline:auto}
.label{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.skip{position:absolute;left:-9999px;top:8px;z-index:10;background:var(--surface);color:var(--ink);padding:8px 12px;border-radius:4px}
.skip:focus{left:16px}

/* logo lockup */
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#5DBA88}
.brand svg{width:34px;height:44px;flex:none}
.word{font-family:"Montserrat",sans-serif;line-height:1;color:var(--on-night)}
.word b{display:block;font-weight:600;font-size:17px;letter-spacing:.05em}
.word span{display:block;font-weight:600;font-size:9px;letter-spacing:.34em;margin-top:4px}

/* header over the hero photo */
.nav{position:absolute;inset:0 0 auto 0;z-index:2;padding-block:20px}
.nav .inner{display:flex;align-items:center;justify-content:space-between;gap:12px}
.nav nav{display:flex;align-items:center;gap:20px;font-size:14px;color:var(--on-night-muted)}
.nav nav a{text-decoration:none}
.nav nav a:hover{color:#fff}
.nav .lang{border:1px solid rgba(232,241,238,.4);border-radius:999px;padding:3px 12px;color:var(--on-night)}
.nav .lang:hover{border-color:#5DBA88}

/* photo layers */
.photo{position:absolute;inset:0;overflow:hidden;background:linear-gradient(160deg,#0F2E3E,#0A1A24 70%)}
.photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.photo::after{content:"";position:absolute;inset:0}

.hero{position:relative;min-height:560px;min-height:min(86vh,760px);color:var(--on-night);display:flex;align-items:flex-end}
.hero .photo img{object-position:center 40%}
.hero .photo::after{background:linear-gradient(180deg,rgba(10,26,36,.42),rgba(10,26,36,0) 35%,rgba(10,26,36,.12) 55%,rgba(10,26,36,.72)),linear-gradient(90deg,rgba(10,26,36,.72),rgba(10,26,36,.45) 40%,rgba(10,26,36,0) 68%)}
.hero .copy{position:relative;z-index:1;width:100%;padding-block:120px 64px}
.hero .copy .inner > *{max-width:760px}
.hero h1{font-size:clamp(34px,5.4vw,62px);line-height:1.08;font-weight:700;text-shadow:0 2px 24px rgba(10,26,36,.45)}
.hero .lede{margin-top:20px;font-size:18px;color:#D9E6E3;max-width:54ch;text-shadow:0 1px 12px rgba(10,26,36,.6)}
.hero .where{margin-top:26px;display:flex;flex-wrap:wrap;gap:8px 18px}
.hero .label{color:var(--on-night-muted)}

/* ventures */
.ventures{padding-block:56px 48px}
.vhead{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px;margin-bottom:24px}
.vhead h2{font-size:clamp(24px,3vw,34px)}
.vgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.venture{background:var(--surface);border:1px solid var(--line);border-radius:8px;overflow:hidden;display:flex;flex-direction:column;min-width:0}
.venture img{display:block;width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;background:#E4ECE9}
.venture .txt{padding:18px 20px 22px;display:grid;gap:8px;align-content:start}
.venture h3{font-size:20px}
.venture .sub{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.venture .desc{color:var(--muted);font-size:15px}
.go{font-weight:600;color:var(--leaf);text-decoration:none;margin-top:4px}
.go:hover{text-decoration:underline}

/* approach */
.idea{border-top:1px solid var(--line)}
.idea .inner{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:40px;align-items:center;padding-block:56px}
.idea img{width:100%;max-width:340px;height:auto;aspect-ratio:1;object-fit:cover;border-radius:50%;display:block;margin-inline:auto}
.idea h2{font-size:clamp(22px,2.8vw,30px);margin-bottom:14px}
.idea p{color:var(--muted);max-width:56ch}

/* contact */
.contact{position:relative;color:var(--on-night)}
.contact .photo::after{background:linear-gradient(90deg,rgba(10,26,36,.62),rgba(10,26,36,.3))}
.contact .in{position:relative;z-index:1;padding-block:72px}
.contact .row{display:flex;flex-wrap:wrap;gap:20px 40px;justify-content:space-between;align-items:end}
.contact h2{font-size:clamp(24px,3vw,34px)}
.contact .label{color:var(--on-night-muted);margin-top:10px;display:block}
.mail{font-family:var(--mono);font-size:17px;color:#fff;text-decoration:none;border:1px solid rgba(232,241,238,.35);border-radius:6px;padding:12px 16px;background:rgba(10,26,36,.35);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);overflow-wrap:anywhere}
.mail:hover{border-color:#5DBA88}

.foot{background:var(--night);color:var(--on-night-muted);padding-block:20px 26px;font-size:13px}
.foot .inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 24px}
.foot .credit{flex-basis:100%;font-size:12px;opacity:.8}
.foot a{color:inherit}

/* 404 */
.lost{min-height:100vh;min-height:100dvh;background:var(--night);color:var(--on-night);display:grid;place-items:center;text-align:center;padding:40px 16px}
.lost svg{width:64px;height:83px;color:#5DBA88}
.lost h1{font-size:28px;margin:18px 0 10px}
.lost p{color:var(--on-night-muted);margin-bottom:6px}
.lost a{color:#5DBA88}

@media (max-width:860px){
  .vgrid{grid-template-columns:1fr}
  .idea .inner{grid-template-columns:1fr;gap:28px}
}
@media (max-width:760px){
  .nav nav a:not(.lang){display:none}
  .hero{min-height:520px}
  .hero .copy{padding-block:110px 44px}
  .hero .lede{font-size:17px}
}