/* === @font-face === */
@font-face{font-family:'Inter';font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/inter-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Inter';font-style:normal;font-weight:500;font-display:swap;src:url(../fonts/inter-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Inter';font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/inter-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Inter';font-style:normal;font-weight:700;font-display:swap;src:url(../fonts/inter-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Inter';font-style:normal;font-weight:800;font-display:swap;src:url(../fonts/inter-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Inter';font-style:normal;font-weight:900;font-display:swap;src:url(../fonts/inter-latin.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

/* === Reset + CSS Variables === */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#05070b;
  --bg-soft:#0b1018;
  --panel:#0c121b;
  --panel-2:#101826;
  --text:#f5f7fb;
  --muted:#9aa6b2;
  --soft:#6c7888;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:rgba(12,18,27,.64);
  --glass-light:rgba(255,255,255,.03);
  --blue:#6ea8fe;
  --blue-2:#3b82f6;
  --purple:#9b8cff;
  --green:#3dd9a3;
  --shadow:0 30px 80px rgba(0,0,0,.35);
  --radius:16px;
  --radius-lg:20px;
  --ease:cubic-bezier(.16,1,.3,1);
}
html{scroll-behavior:smooth;scroll-snap-type:y proximity}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overflow-x:hidden;touch-action:manipulation}
a{text-decoration:none;color:inherit}
button,input,textarea{font:inherit}

/* === Global layout === */
#fx{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:1}
.page{position:relative;height:100vh;display:flex;align-items:center;justify-content:center;padding:96px 0;overflow:hidden;background-color:#05070b;background-image:none;transition:background-color 1s ease-in-out;scroll-snap-align:start;scroll-snap-stop:always}
.page[data-p="4"]{flex-direction:column;justify-content:center}
.page.demo-light{background-color:#f7f8fc}
.page[data-p="0"]{padding:0;overflow:visible;min-height:100vh}
.inner{position:relative;z-index:2;width:100%;max-width:1240px;padding:0 32px}
.glass{background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid var(--line)}
.glass-soft{background:var(--glass-light);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.05)}
.fi,.fl,.fr{opacity:0;transition:opacity .8s var(--ease),transform .8s var(--ease)}
.fi{transform:translateY(28px)}
.fl{transform:translateX(-32px)}
.fr{transform:translateX(32px)}
.fi.on,.fl.on,.fr.on{opacity:1;transform:none}
.section-glow{position:absolute;left:50%;top:0;transform:translateX(-50%);width:min(1120px,92vw);height:280px;pointer-events:none;z-index:1;opacity:.7}
.page[data-p="1"] .section-glow{background:radial-gradient(circle at 50% 0%,rgba(110,168,254,.14),transparent 62%)}
.page[data-p="2"] .section-glow{background:radial-gradient(circle at 50% 0%,rgba(155,140,255,.12),transparent 62%)}
.page[data-p="3"] .section-glow{background:radial-gradient(circle at 50% 0%,rgba(61,217,163,.1),transparent 62%)}
.page[data-p="4"] .section-glow{background:radial-gradient(circle at 50% 0%,rgba(110,168,254,.12),transparent 64%)}

/* === Progress nav === */
.progress{position:fixed;right:22px;top:50%;transform:translateY(-50%);z-index:100;display:flex;flex-direction:column;align-items:center;gap:8px}
.progress .ln{width:2px;height:24px;background:rgba(255,255,255,.08);border-radius:999px;overflow:hidden}
.progress .ln .fl{width:100%;height:0;opacity:1;transform:none;background:linear-gradient(180deg,var(--blue),var(--purple));transition:height .35s var(--ease)}
.progress .st{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.16);cursor:pointer;position:relative;transition:all .25s var(--ease)}
.progress .st.on{background:var(--blue);border-color:var(--blue);transform:scale(1.22);box-shadow:0 0 0 5px rgba(110,168,254,.12)}
.progress .tip{position:absolute;right:18px;top:50%;transform:translateY(-50%);font-size:10px;color:var(--muted);white-space:nowrap;padding:4px 10px;border-radius:999px;background:rgba(12,18,27,.92);border:1px solid var(--line);opacity:0;pointer-events:none;transition:opacity .2s}
.progress .st:hover .tip{opacity:1}

/* === Scroll cue === */
.scroll-cue{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;z-index:3;color:var(--soft);font-size:10px;letter-spacing:3px;text-transform:uppercase}
.scroll-cue .ln{width:1px;height:26px;background:linear-gradient(to bottom,var(--soft),transparent)}

/* === Icon + Button === */
.icon{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn-row{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 20px;border-radius:14px;font-size:14px;font-weight:600;border:1px solid var(--line-strong);background:rgba(255,255,255,.06);color:var(--muted);transition:all .28s var(--ease)}
.btn:hover{transform:translateY(-2px);border-color:var(--line-strong);color:var(--text);background:rgba(255,255,255,.05)}
.btn.primary{background:#f5f7fb;color:#0b1018;border-color:#f5f7fb}
.btn.primary:hover{background:#fff;color:#000}

/* === Section head === */
.section-head{text-align:center;max-width:780px;margin:0 auto 54px}
.section-head .eyebrow{font-size:11px;letter-spacing:2.8px;text-transform:uppercase;color:var(--muted);margin-bottom:14px}
.section-head h2{font-size:clamp(30px,3.4vw,46px);line-height:1.08;letter-spacing:-1.8px;font-weight:800;margin-bottom:16px}
.section-head p{font-size:15px;line-height:1.9;color:var(--muted)}

/* === Language Switch === */
.lang-switch{position:fixed;top:20px;right:22px;z-index:110;display:flex;gap:2px;padding:3px;border-radius:10px;background:rgba(12,18,27,.8);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--line)}
.lang-btn{padding:6px 14px;border-radius:8px;font-size:11px;font-weight:600;color:var(--soft);background:none;border:none;cursor:pointer;transition:all .2s var(--ease);letter-spacing:.02em}
.lang-btn.active{color:var(--text);background:rgba(255,255,255,.08)}
.lang-btn:hover:not(.active){color:var(--muted)}

/* === Footer === */
.site-footer{padding:40px 0 32px;margin-top:auto;text-align:center;border-top:1px solid var(--line);color:var(--soft);font-size:11px;letter-spacing:.04em;position:relative;z-index:2}
.site-footer a{color:var(--muted);transition:color .2s}
.site-footer a:hover{color:var(--text)}
.footer-links{display:flex;justify-content:center;gap:20px;margin-bottom:10px;flex-wrap:wrap}
.footer-copy{opacity:.6}

/* === Focus States === */
.btn:focus-visible,.scene-card:focus-visible,.modal-close:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:8px}
.progress .st:focus-visible{outline:2px solid var(--blue);outline-offset:2px}