/* =========================================================
   ThinkSol — Light theme design system
   Aesthetic: warm editorial tech. Bone paper, deep ink,
   electric-cobalt → teal "intelligence" gradient accent.
   ========================================================= */

:root{
  /* palette */
  --bone:        #F4F1E9;
  --bone-2:      #ECE7DB;
  --paper:       #FBFAF6;
  --ink:         #14130F;
  --ink-soft:    #3A3730;
  --muted:       #6E685C;
  --line:        #DED7C7;
  --line-soft:   #E7E1D3;

  --blue:        #2440FF;
  --blue-deep:   #1A2EC4;
  --teal:        #06B6A4;
  --coral:       #FF5A36;
  --grad:        linear-gradient(115deg,#2440FF 0%,#3D6BFF 38%,#06B6A4 100%);
  --grad-soft:   linear-gradient(115deg,rgba(36,64,255,.12),rgba(6,182,164,.12));

  /* type */
  --display: "Bricolage Grotesque", Georgia, serif;
  --body:    "Hanken Grotesk", "Segoe UI", sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, monospace;

  /* shape */
  --r-lg: 22px;
  --r-md: 16px;
  --r-sm: 10px;
  --shadow: 0 1px 2px rgba(20,19,15,.04), 0 12px 34px -16px rgba(20,19,15,.18);
  --shadow-lg: 0 2px 6px rgba(20,19,15,.05), 0 40px 80px -30px rgba(20,19,15,.30);

  --maxw: 1200px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--body);
  background:var(--bone);
  color:var(--ink);
  line-height:1.55;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}
/* subtle paper grain */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea,select{font-family:inherit;font-size:1rem}
::selection{background:var(--blue);color:#fff}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;position:relative;z-index:1}
.eyebrow{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--blue);display:inline-flex;align-items:center;gap:.6em;font-weight:600;
}
.eyebrow::before{content:"";width:26px;height:1.5px;background:var(--blue)}

h1,h2,h3{font-family:var(--display);font-weight:700;line-height:1.04;letter-spacing:-.02em;color:var(--ink)}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55em;font-weight:600;font-size:.96rem;
  padding:.82em 1.5em;border-radius:999px;transition:.25s cubic-bezier(.2,.8,.2,1);
  white-space:nowrap;line-height:1;
}
.btn-primary{background:var(--ink);color:var(--paper);box-shadow:var(--shadow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-accent{background:var(--grad);color:#fff;background-size:160% 160%;box-shadow:0 10px 28px -10px rgba(36,64,255,.6)}
.btn-accent:hover{transform:translateY(-2px);background-position:100% 0}
.btn-ghost{border:1.5px solid var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn .arr{transition:transform .25s}
.btn:hover .arr{transform:translateX(4px)}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:50;backdrop-filter:saturate(140%) blur(14px);
  background:rgba(244,241,233,.78);border-bottom:1px solid transparent;transition:.3s;
}
.site-head.scrolled{border-bottom-color:var(--line);background:rgba(244,241,233,.92)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.logo{display:flex;align-items:center;gap:.6em;font-family:var(--display);font-weight:700;font-size:1.32rem;letter-spacing:-.03em}
.logo .mark{width:30px;height:30px;border-radius:9px;background:var(--grad);position:relative;display:grid;place-items:center;box-shadow:0 6px 16px -6px rgba(36,64,255,.7)}
.logo .mark::after{content:"";width:11px;height:11px;border-radius:3px;background:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.25)}
.logo b{color:var(--blue)}
.nav-links{display:flex;align-items:center;gap:34px;list-style:none}
.nav-links a{font-weight:500;font-size:.97rem;color:var(--ink-soft);position:relative;padding:4px 0;transition:.2s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--grad);transition:.25s}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a.active{color:var(--ink)}
.nav-cta{display:flex;align-items:center;gap:14px}
.studio-link{display:inline-flex;align-items:center;gap:.5em;font-weight:600;font-size:.92rem;
  padding:.6em 1.05em;border-radius:999px;background:#101014;color:#fff;position:relative;overflow:hidden}
.studio-link .dot{width:7px;height:7px;border-radius:50%;background:#06B6A4;box-shadow:0 0 0 0 rgba(6,182,164,.7);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(6,182,164,.6)}70%{box-shadow:0 0 0 8px rgba(6,182,164,0)}100%{box-shadow:0 0 0 0 rgba(6,182,164,0)}}
.burger{display:none;flex-direction:column;gap:5px;padding:8px}
.burger span{width:24px;height:2px;background:var(--ink);transition:.25s}

/* ---------- hero ---------- */
.hero{position:relative;padding:72px 0 90px;overflow:hidden}
.hero .glow{position:absolute;border-radius:50%;filter:blur(80px);opacity:.5;z-index:0}
.hero .glow.g1{width:520px;height:520px;background:radial-gradient(circle,#3D6BFF55,transparent 70%);top:-160px;right:-120px}
.hero .glow.g2{width:440px;height:440px;background:radial-gradient(circle,#06B6A455,transparent 70%);bottom:-180px;left:-100px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:clamp(2.6rem,6vw,4.7rem);margin:22px 0 0}
.hero p.lead{font-size:1.2rem;color:var(--muted);max-width:30em;margin:24px 0 32px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:34px;margin-top:48px;flex-wrap:wrap}
.hero-stats .s b{font-family:var(--display);font-size:2rem;display:block;line-height:1}
.hero-stats .s span{font-size:.85rem;color:var(--muted)}

/* hero visual — animated AI panel */
.hero-card{
  background:#0E1016;border-radius:var(--r-lg);padding:22px;box-shadow:var(--shadow-lg);
  color:#E8EAF0;font-family:var(--mono);font-size:.86rem;position:relative;overflow:hidden;
  border:1px solid rgba(255,255,255,.06);
}
.hero-card::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 200px at 80% -10%,rgba(61,107,255,.25),transparent 60%);pointer-events:none}
.hc-top{display:flex;align-items:center;gap:8px;margin-bottom:16px;position:relative;z-index:1}
.hc-top .dots{display:flex;gap:6px}
.hc-top .dots i{width:11px;height:11px;border-radius:50%;display:block}
.hc-top .dots i:nth-child(1){background:#FF5F57}.hc-top .dots i:nth-child(2){background:#FEBC2E}.hc-top .dots i:nth-child(3){background:#28C840}
.hc-top span{margin-left:auto;color:#7B8094;font-size:.74rem}
.hc-line{margin:7px 0;position:relative;z-index:1}
.hc-line .pfx{color:#06D6C0}
.hc-line .you{color:#7B8094}
.hc-stream{color:#C7CCDA;min-height:1.4em}
.cursor{display:inline-block;width:8px;height:1.05em;background:#06D6C0;vertical-align:-2px;animation:blink 1s steps(2) infinite;margin-left:2px}
@keyframes blink{50%{opacity:0}}
.hc-chips{display:flex;gap:7px;flex-wrap:wrap;margin-top:14px;position:relative;z-index:1}
.hc-chips b{font-size:.7rem;padding:.32em .7em;border-radius:999px;background:rgba(61,107,255,.16);color:#9DB4FF;font-weight:500;border:1px solid rgba(61,107,255,.25)}

/* ---------- generic section ---------- */
.section{padding:90px 0;position:relative}
.section-head{max-width:38em;margin-bottom:48px}
.section-head h2{font-size:clamp(2rem,4vw,3.1rem);margin:16px 0 14px}
.section-head p{color:var(--muted);font-size:1.08rem}
.section.alt{background:var(--bone-2)}

/* trust strip */
.trust{padding:30px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-inner{display:flex;align-items:center;gap:34px;flex-wrap:wrap;justify-content:center}
.trust span{font-family:var(--mono);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:600}

/* ---------- products ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.prod{
  position:relative;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px;overflow:hidden;transition:.35s cubic-bezier(.2,.8,.2,1);
}
.prod::after{content:"";position:absolute;inset:0;background:var(--grad-soft);opacity:0;transition:.35s}
.prod:hover{transform:translateY(-5px);border-color:transparent;box-shadow:var(--shadow-lg)}
.prod:hover::after{opacity:1}
.prod>*{position:relative;z-index:1}
.prod .pico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:var(--ink);color:#fff;box-shadow:var(--shadow)}
.prod .pico svg{width:26px;height:26px}
.prod h3{font-size:1.5rem;margin-bottom:8px}
.prod .tag{font-family:var(--mono);font-size:.72rem;color:var(--teal);letter-spacing:.1em;text-transform:uppercase;font-weight:600}
.prod p{color:var(--muted);margin:12px 0 18px;font-size:.98rem}
.prod ul{list-style:none;display:flex;flex-direction:column;gap:7px;margin-bottom:6px}
.prod ul li{font-size:.9rem;color:var(--ink-soft);display:flex;gap:.6em;align-items:flex-start}
.prod ul li::before{content:"";flex:none;width:6px;height:6px;border-radius:50%;background:var(--blue);margin-top:.55em}

/* feature row */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feat{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);padding:26px;transition:.3s}
.feat:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feat .ico{width:42px;height:42px;border-radius:11px;background:var(--grad-soft);display:grid;place-items:center;margin-bottom:14px;color:var(--blue)}
.feat h4{font-family:var(--display);font-size:1.12rem;margin-bottom:6px}
.feat p{font-size:.9rem;color:var(--muted)}

/* studio promo band */
.studio-band{background:#0B0D12;color:#E8EAF0;border-radius:28px;padding:54px;position:relative;overflow:hidden}
.studio-band::before{content:"";position:absolute;inset:0;background:
  radial-gradient(500px 300px at 15% 20%,rgba(61,107,255,.35),transparent 60%),
  radial-gradient(500px 300px at 85% 90%,rgba(6,182,164,.3),transparent 60%)}
.studio-band-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.studio-band h2{color:#fff;font-size:clamp(2rem,4vw,3rem)}
.studio-band p{color:#AEB4C6;margin:16px 0 26px;font-size:1.06rem}
.studio-band .mini-term{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:20px;font-family:var(--mono);font-size:.82rem;color:#C7CCDA}
.studio-band .mini-term .pfx{color:#06D6C0}

/* ---------- blog cards ---------- */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;transition:.3s;cursor:pointer}
.post-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:transparent}
.post-card .cover{aspect-ratio:16/10;background:var(--grad);position:relative;overflow:hidden}
.post-card .cover .ov{position:absolute;inset:0;background:radial-gradient(circle at 70% 20%,rgba(255,255,255,.25),transparent 60%);mix-blend-mode:overlay}
.post-card .cover span{position:absolute;bottom:14px;left:16px;font-family:var(--mono);color:#fff;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;opacity:.9}
.post-card .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card h3{font-size:1.28rem;line-height:1.18}
.post-card .ex{color:var(--muted);font-size:.93rem;flex:1}
.post-meta{display:flex;align-items:center;gap:10px;font-size:.8rem;color:var(--muted);margin-top:4px}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{font-family:var(--mono);font-size:.68rem;padding:.3em .7em;border-radius:999px;background:var(--bone-2);
  color:var(--ink-soft);border:1px solid var(--line);font-weight:500;letter-spacing:.04em;cursor:pointer;transition:.2s}
.chip:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.chip.active{background:var(--blue);color:#fff;border-color:var(--blue)}

/* ---------- toolbar (blog/forum) ---------- */
.toolbar{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-bottom:28px}
.search{flex:1;min-width:220px;display:flex;align-items:center;gap:10px;background:var(--paper);
  border:1px solid var(--line);border-radius:999px;padding:.7em 1.1em;transition:.2s}
.search:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px rgba(36,64,255,.12)}
.search input{border:none;outline:none;background:none;width:100%;color:var(--ink)}
.search svg{flex:none;color:var(--muted)}
.filter-chips{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- forms / fields ---------- */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:.82rem;font-weight:600;color:var(--ink-soft);letter-spacing:.01em}
.field input,.field textarea,.field select{
  border:1px solid var(--line);border-radius:var(--r-sm);padding:.78em .95em;background:var(--paper);
  color:var(--ink);outline:none;transition:.2s;width:100%}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(36,64,255,.12)}
.field textarea{resize:vertical;min-height:120px;line-height:1.6}
.field .hint{font-size:.75rem;color:var(--muted)}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:14px}

/* card / panel */
.panel{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow)}

/* ---------- modal ---------- */
.modal-bg{position:fixed;inset:0;background:rgba(20,19,15,.55);backdrop-filter:blur(4px);z-index:100;
  display:none;align-items:flex-start;justify-content:center;padding:40px 20px;overflow-y:auto}
.modal-bg.open{display:flex}
.modal{background:var(--paper);border-radius:var(--r-lg);max-width:680px;width:100%;box-shadow:var(--shadow-lg);
  animation:rise .35s cubic-bezier(.2,.8,.2,1);position:relative}
@keyframes rise{from{opacity:0;transform:translateY(24px) scale(.98)}to{opacity:1;transform:none}}
.modal-x{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;background:var(--bone-2);
  display:grid;place-items:center;font-size:1.2rem;color:var(--ink);z-index:2;transition:.2s}
.modal-x:hover{background:var(--ink);color:#fff;transform:rotate(90deg)}
.modal-body{padding:36px}

/* tabs */
.tabs{display:flex;gap:6px;background:var(--bone-2);padding:5px;border-radius:999px;width:fit-content;margin-bottom:22px}
.tabs button{padding:.55em 1.3em;border-radius:999px;font-weight:600;font-size:.9rem;color:var(--muted);transition:.2s}
.tabs button.active{background:var(--paper);color:var(--ink);box-shadow:var(--shadow)}

/* ---------- forum ---------- */
.thread{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);padding:22px;margin-bottom:14px;transition:.25s;cursor:pointer}
.thread:hover{border-color:var(--blue);box-shadow:var(--shadow)}
.thread h3{font-size:1.22rem;margin-bottom:6px}
.thread .meta{display:flex;align-items:center;gap:12px;font-size:.82rem;color:var(--muted);margin-top:10px;flex-wrap:wrap}
.avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:.8rem;color:#fff;background:var(--grad);flex:none}
.badge{font-family:var(--mono);font-size:.66rem;padding:.25em .6em;border-radius:6px;letter-spacing:.06em;text-transform:uppercase;font-weight:600}
.badge.guest{background:#FFF0EB;color:var(--coral);border:1px solid #FFD8CC}
.badge.member{background:var(--grad-soft);color:var(--blue)}
.reply{border-left:2px solid var(--line);padding:14px 0 14px 18px;margin-top:14px}
.reply .meta{margin-top:6px}

/* auth pill in nav (forum) */
.user-pill{display:flex;align-items:center;gap:9px;font-size:.9rem;font-weight:600}
.user-pill .avatar{width:32px;height:32px}

/* empty state */
.empty{text-align:center;padding:60px 20px;color:var(--muted)}
.empty svg{opacity:.4;margin-bottom:14px}

/* toast */
.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%) translateY(80px);background:var(--ink);
  color:var(--paper);padding:.9em 1.4em;border-radius:999px;font-weight:600;font-size:.92rem;z-index:200;
  box-shadow:var(--shadow-lg);opacity:0;transition:.35s cubic-bezier(.2,.8,.2,1)}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start}
.contact-info .ci{display:flex;gap:14px;margin-bottom:22px;align-items:flex-start}
.contact-info .ci .ico{width:44px;height:44px;border-radius:12px;background:var(--grad-soft);display:grid;place-items:center;color:var(--blue);flex:none}
.contact-info .ci b{display:block;font-family:var(--display);font-size:1.05rem}
.contact-info .ci span{color:var(--muted);font-size:.92rem}

/* ---------- footer ---------- */
.site-foot{background:#0B0D12;color:#AEB4C6;padding:70px 0 30px;position:relative;z-index:1;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px}
.foot-brand .logo{color:#fff;margin-bottom:14px}
.foot-brand p{max-width:26em;font-size:.94rem;line-height:1.7}
.foot-col h5{color:#fff;font-family:var(--display);font-size:1.02rem;margin-bottom:16px}
.foot-col a{display:block;padding:6px 0;font-size:.92rem;color:#AEB4C6;transition:.2s}
.foot-col a:hover{color:#fff;padding-left:5px}
.foot-bot{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:14px;font-size:.85rem;color:#7B8094}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(26px);transition:.7s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .hero-grid,.studio-band-grid,.contact-grid{grid-template-columns:1fr;gap:34px}
  .prod-grid,.feat-grid,.blog-grid{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  body{font-size:16px}
  .nav-links,.nav-cta .btn{display:none}
  .burger{display:flex}
  .prod-grid,.feat-grid,.blog-grid,.two-col{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:26px}
  .section{padding:64px 0}
  .studio-band{padding:32px}
  .modal-body{padding:24px}
  .mobile-open .nav-links{display:flex;position:absolute;top:74px;left:0;right:0;flex-direction:column;
    background:var(--paper);padding:18px 28px;gap:14px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
}