/* ============ TOKENS ============ */
:root{
  --void:#0D0F14;
  --void-2:#171A22;
  --paper:#F6F5F1;
  --paper-2:#FFFFFF;
  --ink:#12141A;
  --ink-soft:#585D68;
  --mist:rgba(246,245,241,0.72);
  --mist-soft:rgba(246,245,241,0.5);
  --highlight:#CBFF4D;
  --highlight-dim:rgba(203,255,77,0.16);
  --signal:#5B6EFF;
  --line-light:rgba(18,20,26,0.10);
  --line-dark:rgba(246,245,241,0.12);

  --font-display:'Space Grotesk','Inter','PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'Inter','PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','SFMono-Regular',Consolas,monospace;

  --container:1120px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3{margin:0;font-family:var(--font-display);font-weight:700;letter-spacing:-0.01em;}
p{margin:0;}
button{font-family:inherit;}

.section-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:96px 32px;
}

.eyebrow{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:0.04em;
  color:var(--mist);
  margin:0 0 20px;
}
.eyebrow-dark{color:var(--ink-soft);}

.section-title{
  font-size:clamp(28px,4vw,42px);
  line-height:1.2;
  margin-bottom:16px;
}
.section-title.light{color:var(--paper);}
.section-sub{
  max-width:620px;
  color:var(--ink-soft);
  font-size:16px;
  margin-bottom:56px;
}
.section-sub.light{color:var(--mist);}

.underline-hl{
  background-image:linear-gradient(var(--highlight),var(--highlight));
  background-repeat:no-repeat;
  background-size:100% 10px;
  background-position:0 90%;
}

/* ============ REVEAL ANIMATION ============ */
.reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .7s ease, transform .7s ease;
  transition-delay:var(--delay,0ms);
}
.reveal.in-view{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
}

/* ============ NAV ============ */
.nav{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  background:rgba(13,15,20,0.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-dark);
}
.nav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:16px 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.brand{display:flex;align-items:baseline;gap:8px;}
.brand-mark{
  font-family:var(--font-display);
  font-weight:700;
  font-size:20px;
  color:var(--paper);
  letter-spacing:0.02em;
}
.brand-tag{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--highlight);
  border:1px solid rgba(203,255,77,0.4);
  padding:2px 6px;
  border-radius:3px;
}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{
  font-size:14px;
  color:var(--mist);
  transition:color .2s ease;
}
.nav-links a:hover{color:var(--paper);}
.nav-cta{
  background:var(--highlight);
  color:var(--void) !important;
  padding:8px 16px;
  border-radius:6px;
  font-weight:600;
}
.nav-cta:hover{opacity:0.88;}
.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;
  border:none;
  cursor:pointer;
  padding:6px;
}
.nav-toggle span{
  width:22px;height:2px;background:var(--paper);border-radius:2px;
}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:14px 26px;
  border-radius:8px;
  font-size:15px;
  font-weight:600;
  transition:transform .18s ease, opacity .18s ease, background .18s ease;
  border:1px solid transparent;
  cursor:pointer;
}
.btn-primary{background:var(--highlight);color:var(--void);}
.btn-primary:hover{transform:translateY(-2px);opacity:0.92;}
.btn-ghost{border-color:var(--line-dark);color:var(--paper);}
.btn-ghost:hover{border-color:var(--paper);}
.btn-block{width:100%;}

/* ============ HERO ============ */
.hero{
  background:radial-gradient(120% 140% at 15% -10%, #1a2033 0%, var(--void) 55%);
  padding-top:120px;
  color:var(--paper);
  overflow:hidden;
}
.hero-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:56px 32px 100px;
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:56px;
  align-items:center;
}
.hero-title{
  font-size:clamp(34px,5vw,54px);
  line-height:1.18;
  margin-bottom:24px;
}
.hl-word{
  color:var(--void);
  background:var(--highlight);
  padding:0 10px;
  border-radius:6px;
}
.hero-sub{
  font-size:17px;
  color:var(--mist);
  max-width:520px;
  margin-bottom:36px;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:48px;}
.hero-stats{display:flex;gap:48px;}
.stat{display:flex;flex-direction:column;}
.stat-num{
  font-family:var(--font-display);
  font-size:36px;
  color:var(--highlight);
  line-height:1;
  margin-bottom:8px;
}
.stat-label{font-size:13px;color:var(--mist-soft);line-height:1.5;}

/* ---- hero mockup card ---- */
.hero-visual{display:flex;flex-direction:column;align-items:center;}
.mock-window{
  width:100%;
  background:var(--void-2);
  border:1px solid var(--line-dark);
  border-radius:14px;
  overflow:hidden;
  box-shadow:0 30px 80px -20px rgba(0,0,0,0.55);
}
.mock-bar{
  display:flex;align-items:center;gap:6px;
  padding:12px 16px;
  border-bottom:1px solid var(--line-dark);
}
.mock-bar .dot{width:8px;height:8px;border-radius:50%;background:rgba(246,245,241,0.18);}
.mock-bar-label{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--mist-soft);
}
.mock-body{padding:22px;display:flex;flex-direction:column;gap:16px;}
.mock-role{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--mist-soft);
  display:block;
  margin-bottom:6px;
}
.mock-query{
  align-self:flex-end;
  background:rgba(91,110,255,0.18);
  border:1px solid rgba(91,110,255,0.35);
  border-radius:10px 10px 2px 10px;
  padding:12px 14px;
  max-width:80%;
}
.mock-query p{font-size:14px;color:var(--paper);}
.mock-answer{
  background:rgba(246,245,241,0.05);
  border:1px solid var(--line-dark);
  border-radius:2px 10px 10px 10px;
  padding:14px 16px;
}
.mock-answer p{font-size:14.5px;color:var(--mist);line-height:1.7;}
.cite-target{
  border-radius:3px;
  padding:0 3px;
  transition:background .6s ease, color .6s ease;
  font-weight:600;
  color:var(--paper);
}
.cite-target.sweep{background:var(--highlight);color:var(--void);}
.cite-mark{color:var(--highlight);font-weight:600;}
.mock-sources{
  display:flex;flex-wrap:wrap;gap:8px 14px;
  padding-top:6px;
  border-top:1px dashed var(--line-dark);
  opacity:0;
  transform:translateY(6px);
  transition:opacity .6s ease, transform .6s ease;
}
.mock-sources.show{opacity:1;transform:translateY(0);}
.source-title{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--mist-soft);
  width:100%;
}
.source-item{
  font-size:12.5px;
  color:var(--mist-soft);
}
.mock-caption{
  margin-top:16px;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--mist-soft);
}

/* ============ CONTEXT ============ */
.context{background:var(--paper);}
.context-inner{padding-top:100px;}
.context-title{
  font-size:clamp(24px,3.4vw,34px);
  line-height:1.4;
  max-width:820px;
  margin-bottom:56px;
}
.context-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.context-item{
  border-top:1px solid var(--line-light);
  padding-top:20px;
  font-size:15px;
  color:var(--ink-soft);
  line-height:1.75;
}

/* ============ SERVICES ============ */
.services{background:var(--paper-2);}
.service-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:28px;
}
.service-card{
  background:var(--paper);
  border:1px solid var(--line-light);
  border-radius:16px;
  padding:36px;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.service-card:hover{
  transform:translateY(-4px);
  border-color:var(--signal);
  box-shadow:0 24px 50px -30px rgba(91,110,255,0.35);
}
.service-head{margin-bottom:24px;}
.service-index{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--signal);
  background:rgba(91,110,255,0.1);
  border:1px solid rgba(91,110,255,0.25);
  padding:4px 10px;
  border-radius:20px;
  margin-bottom:14px;
}
.service-head h3{font-size:21px;line-height:1.4;}
.service-list{display:flex;flex-direction:column;gap:18px;}
.service-list li{
  display:flex;flex-direction:column;gap:4px;
  border-top:1px solid var(--line-light);
  padding-top:14px;
}
.service-list li:first-child{border-top:none;padding-top:0;}
.service-list strong{font-size:15px;}
.service-list span{font-size:14px;color:var(--ink-soft);line-height:1.65;}

/* ============ PLATFORMS ============ */
.platforms{background:var(--void);}
.platform-row{
  display:flex;flex-wrap:wrap;gap:14px;
}
.platform-badge{
  display:flex;
  align-items:center;
  gap:11px;
  font-family:var(--font-mono);
  font-size:15px;
  color:var(--paper);
  border:1px solid var(--line-dark);
  border-radius:999px;
  padding:12px 24px;
  transition:border-color .2s ease, background .2s ease;
}
.platform-badge img{width:28px;height:28px;object-fit:contain;border-radius:7px;background:#fff;padding:3px;}
.platform-badge:hover{border-color:var(--highlight);background:rgba(203,255,77,0.06);}

/* ============ NEWS ============ */
.news{background:var(--paper);}
.news-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;}
.news-heading .section-sub{margin-bottom:0;}
.news-more{font-size:14px;font-weight:600;white-space:nowrap;border-bottom:1px solid var(--ink);padding-bottom:3px;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px;}
.news-card{border-top:2px solid var(--ink);padding-top:16px;display:flex;flex-direction:column;min-width:0;}
.news-card-image{aspect-ratio:16/9;object-fit:cover;width:100%;background:#e8e7e2;margin-bottom:18px;}
.news-card-meta{font-family:var(--font-mono);font-size:11px;color:var(--ink-soft);margin-bottom:10px;}
.news-card h3{font-size:20px;line-height:1.4;margin-bottom:10px;}
.news-card p{font-size:14px;line-height:1.7;color:var(--ink-soft);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-card-link{margin-top:auto;padding-top:18px;font-size:13px;font-weight:700;color:var(--signal);}
.news-loading,.news-empty{grid-column:1/-1;color:var(--ink-soft);font-size:14px;}

/* ============ PROCESS ============ */
.process{background:var(--paper);}
.process-list{display:flex;flex-direction:column;}
.process-item{
  display:grid;
  grid-template-columns:100px 1fr;
  gap:24px;
  padding:28px 0;
  border-top:1px solid var(--line-light);
}
.process-item:last-child{border-bottom:1px solid var(--line-light);}
.process-num{
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--signal);
  padding-top:4px;
}
.process-body h3{font-size:19px;margin-bottom:8px;}
.process-body p{font-size:15px;color:var(--ink-soft);max-width:560px;line-height:1.7;}

/* ============ WHY ============ */
.why{background:var(--paper-2);}
.why-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:var(--line-light);
  border:1px solid var(--line-light);
  border-radius:16px;
  overflow:hidden;
}
.why-item{background:var(--paper-2);padding:32px;}
.why-item h3{font-size:18px;margin-bottom:10px;}
.why-item p{font-size:14.5px;color:var(--ink-soft);line-height:1.7;}

/* ============ CONTACT ============ */
.contact{background:var(--void);color:var(--paper);}
.contact-inner{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:start;
}
.contact-info{margin-top:32px;display:flex;flex-direction:column;gap:14px;}
.contact-info div{display:flex;flex-direction:column;gap:4px;}
.contact-info span{font-family:var(--font-mono);font-size:12px;color:var(--mist-soft);}
.contact-info a{font-size:15px;color:var(--paper);}
.contact-info a:hover{color:var(--highlight);}

.contact-form{
  background:var(--void-2);
  border:1px solid var(--line-dark);
  border-radius:16px;
  padding:32px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.form-row{display:flex;flex-direction:column;gap:8px;}
.form-row label{font-family:var(--font-mono);font-size:12px;color:var(--mist-soft);}
.form-row input,.form-row textarea{
  background:rgba(246,245,241,0.04);
  border:1px solid var(--line-dark);
  border-radius:8px;
  padding:12px 14px;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:14.5px;
  resize:vertical;
  transition:border-color .2s ease;
}
.form-row input::placeholder,.form-row textarea::placeholder{color:var(--mist-soft);}
.form-row input:focus,.form-row textarea:focus{
  outline:none;
  border-color:var(--highlight);
}
.form-note{font-size:12.5px;color:var(--mist-soft);text-align:center;}
.form-note.success{color:var(--highlight);}
.form-note.error{color:#ff8d86;}
.form-honeypot{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden;}

/* ============ FOOTER ============ */
.footer{background:var(--void);border-top:1px solid var(--line-dark);}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:20px;
  padding-top:32px;
  padding-bottom:32px;
}
.footer-brand .brand-mark{font-size:17px;}
.footer-links{display:flex;gap:24px;flex-wrap:wrap;}
.footer-links a{font-size:13px;color:var(--mist-soft);}
.footer-links a:hover{color:var(--paper);}
.footer-copy{font-family:var(--font-mono);font-size:12px;color:var(--mist-soft);width:100%;text-align:left;margin-top:8px;}

/* ============ RESPONSIVE ============ */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;padding-top:24px;}
  .context-grid{grid-template-columns:1fr;gap:0;}
  .context-item{margin-bottom:0;}
  .service-grid{grid-template-columns:1fr;}
  .why-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr 1fr;}
  .contact-inner{grid-template-columns:1fr;}
  .process-item{grid-template-columns:60px 1fr;}
}

@media (max-width:720px){
  .nav-links{
    position:absolute;
    top:100%;left:0;right:0;
    background:var(--void);
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:8px 32px 20px;
    border-bottom:1px solid var(--line-dark);
    display:none;
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 0;width:100%;}
  .nav-cta{margin-top:8px;text-align:center;}
  .nav-toggle{display:flex;}
  .section-inner{padding:64px 20px;}
  .hero-inner{padding:16px 20px 64px;}
  .hero-stats{gap:32px;}
  .footer-inner{flex-direction:column;align-items:flex-start;}
  .news-heading{align-items:flex-start;flex-direction:column;}
  .news-grid{grid-template-columns:1fr;}
}