/* ============================================================
   Mark Thomas Firestone — White × Cobalt, Swiss-Editorial
   Type: Instrument Serif (display) · Plus Jakarta Sans (body)
         JetBrains Mono (meta) · IBM Plex Sans Thai (Thai)
   ============================================================ */

:root{
  --paper:      #ffffff;
  --paper-2:    #f7f9fc;
  --paper-3:    #eef2fb;
  --ink:        #0a1428;
  --ink-2:      #1a2238;
  --muted:      #5a6478;
  --muted-2:    #8b95a8;
  --rule:       #e5e9f2;
  --rule-2:     #d9deec;

  --blue:       #1e4dff;   /* cobalt */
  --blue-deep:  #0b2eaf;
  --blue-soft:  #eef2ff;
  --blue-tint:  #e6ecff;
  --navy:       #0a2540;

  --sans:       -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, "Helvetica Neue", Arial, "Noto Sans", "Noto Sans Thai", sans-serif;
  --serif:      var(--sans);
  --mono:       ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --thai:       var(--sans);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  font-weight:400;
  font-size:17px;
  line-height:1.65;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
  letter-spacing:-.005em;
}

a{color:var(--blue);text-decoration:none;transition:color .2s, opacity .2s}
a:hover{color:var(--blue-deep)}

img{max-width:100%;display:block;height:auto}

.container{max-width:1240px;margin:0 auto;padding:0 40px;position:relative}
@media(max-width:640px){.container{padding:0 22px}}

/* ============================================================
   TOP STRIP + NAV
   ============================================================ */
.strip{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--muted);
  border-bottom:1px solid var(--rule);
  padding:10px 0;
  background:var(--paper);
}
.strip .container{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.strip .dot{color:var(--blue);margin:0 .5em}
.strip strong{color:var(--ink);font-weight:500}

header.site{
  position:sticky;top:0;z-index:20;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(140%) blur(14px);
  border-bottom:1px solid var(--rule);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:18px 0;flex-wrap:wrap;
}
.brand{
  font-family:var(--sans);
  font-weight:600;
  font-size:17px;
  letter-spacing:-.02em;
  color:var(--ink);
  display:flex;align-items:center;gap:10px;
}
.brand::before{
  content:"";display:inline-block;width:9px;height:9px;border-radius:50%;
  background:var(--blue);
  box-shadow:0 0 0 3px var(--blue-tint);
}
.brand em{
  font-style:normal;font-weight:600;color:var(--blue);
}
.nav ul{
  display:flex;flex-wrap:wrap;gap:4px;list-style:none;
}
.nav a{
  font-family:var(--sans);
  font-size:14px;
  font-weight:500;
  letter-spacing:-.005em;
  color:var(--muted);
  padding:8px 14px;
  border-radius:8px;
  transition:color .15s, background .15s;
}
.nav a:hover{color:var(--ink);background:var(--paper-2)}
.nav a[aria-current="page"]{color:var(--blue);background:var(--blue-soft)}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  padding:96px 0 80px;
  position:relative;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:-200px -200px auto auto;width:1100px;height:900px;
  background:
    radial-gradient(closest-side at 30% 40%, rgba(30,77,255,.18), transparent 70%),
    radial-gradient(closest-side at 70% 60%, rgba(30,77,255,.10), transparent 70%);
  filter:blur(20px);
  pointer-events:none;z-index:0;
}
.hero::after{
  content:"";position:absolute;inset:auto auto -120px -200px;width:600px;height:500px;
  background:radial-gradient(closest-side, rgba(30,77,255,.08), transparent 70%);
  filter:blur(20px);pointer-events:none;z-index:0;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.3fr 1fr;
  gap:64px;
  align-items:center;
  position:relative;z-index:1;
}
@media(max-width:880px){.hero-grid{grid-template-columns:1fr;gap:40px}}

.kicker{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--blue);
  margin-bottom:28px;
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 12px;
  background:var(--blue-soft);
  border:1px solid var(--blue-tint);
  border-radius:999px;
}
.kicker .ping{
  width:6px;height:6px;border-radius:50%;background:var(--blue);
  box-shadow:0 0 0 0 rgba(30,77,255,.5);
  animation:ping 2.2s ease-out infinite;
}
@keyframes ping{
  0%{box-shadow:0 0 0 0 rgba(30,77,255,.45)}
  70%{box-shadow:0 0 0 10px rgba(30,77,255,0)}
  100%{box-shadow:0 0 0 0 rgba(30,77,255,0)}
}

.display{
  font-family:var(--sans);
  font-weight:600;
  font-size:clamp(44px, 6.8vw, 92px);
  line-height:1.02;
  letter-spacing:-.035em;
  color:var(--ink);
  margin-bottom:24px;
}
.display em{
  font-style:normal;
  font-weight:600;
  color:var(--blue);
}

.hero p.lede{
  font-size:clamp(17px, 1.4vw, 21px);
  line-height:1.55;
  color:var(--ink-2);
  max-width:58ch;
  font-weight:400;
}

.hero-meta{
  margin-top:40px;
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:24px;
  padding:24px 0;
  border-top:1px solid var(--rule);
  border-bottom:1px solid var(--rule);
}
.hero-meta dl{display:flex;flex-direction:column;gap:4px}
.hero-meta dt{
  font-family:var(--mono);
  font-size:11px;color:var(--muted);
}
.hero-meta dd{
  font-family:var(--sans);
  font-size:15px;color:var(--ink);font-weight:500;
}
@media(max-width:640px){.hero-meta{grid-template-columns:1fr 1fr}}

.thai-caption{
  font-family:var(--thai);
  font-size:15px;
  line-height:1.65;
  color:var(--muted);
  margin-top:24px;
  padding:14px 16px;
  background:var(--paper-2);
  border-radius:10px;
  border-left:3px solid var(--blue);
}
.thai-caption strong{color:var(--ink);font-weight:600}

.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
.cta{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--sans);font-size:15px;font-weight:500;letter-spacing:-.005em;
  padding:14px 22px;border-radius:10px;
  background:var(--blue);color:#fff;
  transition:background .15s, transform .15s, box-shadow .15s;
  box-shadow:0 1px 0 rgba(255,255,255,.2) inset, 0 8px 24px -8px rgba(30,77,255,.5);
}
.cta:hover{background:var(--blue-deep);color:#fff;transform:translateY(-1px);box-shadow:0 12px 28px -8px rgba(30,77,255,.6)}
.cta.ghost{background:transparent;color:var(--ink);border:1px solid var(--rule-2);box-shadow:none}
.cta.ghost:hover{background:var(--paper-2);color:var(--ink);border-color:var(--ink-2)}
.cta::after{content:"→";transition:transform .15s}
.cta:hover::after{transform:translateX(3px)}

/* portrait */
.portrait{position:relative}
.portrait img{
  width:100%;
  border-radius:16px;
  box-shadow:0 30px 60px -20px rgba(10,20,40,.18), 0 0 0 1px var(--rule);
}
.portrait::before{
  content:"";position:absolute;inset:auto -14px -14px auto;width:120px;height:120px;
  background:var(--blue);border-radius:14px;z-index:-1;
  opacity:.12;
}
.portrait figcaption{
  margin-top:16px;
  font-family:var(--mono);
  font-size:11px;color:var(--muted);
  display:flex;justify-content:space-between;gap:12px;
}
.portrait figcaption strong{color:var(--blue);font-weight:500}

/* ============================================================
   TICKER STRIP
   ============================================================ */
.ticker{
  border-top:1px solid var(--rule);
  border-bottom:1px solid var(--rule);
  background:var(--paper-2);
  overflow:hidden;
  padding:18px 0;
}
.ticker-track{
  display:flex;gap:48px;white-space:nowrap;
  animation:scroll 50s linear infinite;
  font-family:var(--sans);
  font-weight:500;
  font-size:18px;
  color:var(--ink);
  letter-spacing:-.01em;
}
.ticker-track .sep{color:var(--blue)}
.ticker-track .thai{font-family:var(--thai);font-weight:500}
.ticker-track em{font-style:normal;font-weight:600;color:var(--blue)}
@keyframes scroll{from{transform:translateX(0)} to{transform:translateX(-50%)}}

/* ============================================================
   SECTION SCAFFOLD
   ============================================================ */
section{
  padding:100px 0;
  border-bottom:1px solid var(--rule);
  position:relative;
}
.sec-head{
  display:grid;
  grid-template-columns: 100px 1fr;
  gap:36px;
  margin-bottom:56px;
  align-items:start;
}
@media(max-width:640px){.sec-head{grid-template-columns:1fr;gap:14px}}
.sec-num{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.05em;
  color:var(--blue);
  padding-top:10px;
  display:flex;align-items:center;gap:10px;
}
.sec-num::before{
  content:"";width:24px;height:1px;background:var(--blue);
}
.sec-title{
  font-family:var(--sans);
  font-weight:600;
  font-size:clamp(32px, 4.2vw, 54px);
  line-height:1.04;
  letter-spacing:-.03em;
  color:var(--ink);
}
.sec-title em{font-style:normal;font-weight:600;color:var(--blue)}
.sec-title small{
  display:block;margin-top:14px;
  font-family:var(--thai);
  font-size:16px;letter-spacing:0;color:var(--muted);font-weight:400;
}

/* ============================================================
   PROSE
   ============================================================ */
.prose{
  max-width:68ch;
  font-size:17px;
  line-height:1.72;
  color:var(--ink-2);
}
.prose p{margin-bottom:1.3em}
.prose p strong{color:var(--ink);font-weight:600}
.prose h3{
  font-family:var(--sans);
  font-weight:600;
  font-size:22px;
  line-height:1.25;
  color:var(--ink);
  margin:2.2em 0 .5em;
  letter-spacing:-.02em;
}
.prose h3 em{font-style:normal;font-weight:600;color:var(--blue)}
.prose ul{margin:0 0 1.4em 0;list-style:none;padding:0}
.prose ul li{
  padding:10px 0 10px 24px;
  border-bottom:1px solid var(--rule);
  position:relative;
}
.prose ul li::before{
  content:"";position:absolute;left:0;top:18px;width:8px;height:8px;border-radius:50%;background:var(--blue);
}

.pull-quote{
  font-weight:500;
  font-size:clamp(20px,2vw,26px);
  line-height:1.4;
  color:var(--ink);
  padding:20px 0 20px 24px;
  border-left:3px solid var(--blue);
  margin:32px 0;
  max-width:64ch;
  letter-spacing:-.01em;
}

/* ============================================================
   EXPERTISE GRID
   ============================================================ */
.expertise{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  border:1px solid var(--rule);
  border-radius:14px;
  overflow:hidden;
  background:var(--paper);
}
@media(max-width:880px){.expertise{grid-template-columns:repeat(2,1fr)}}
@media(max-width:580px){.expertise{grid-template-columns:1fr}}
.expertise a{
  display:flex;flex-direction:column;
  gap:14px;
  padding:36px 32px;
  border-right:1px solid var(--rule);
  border-bottom:1px solid var(--rule);
  color:var(--ink);
  background:var(--paper);
  transition:background .2s;
  min-height:240px;
}
.expertise a:hover{background:var(--paper-2);color:var(--ink)}
.expertise a:hover .x-arrow{color:var(--blue);transform:translate(4px,-4px)}
.expertise .x-num{
  font-family:var(--mono);
  font-size:11px;color:var(--muted);letter-spacing:.04em;
}
.expertise .x-title{
  font-family:var(--sans);
  font-weight:600;
  font-size:24px;
  line-height:1.2;
  letter-spacing:-.02em;
  color:var(--ink);
  margin-top:auto;
}
.expertise .x-title em{font-style:normal;font-weight:600;color:var(--blue)}
.expertise .x-meta{
  font-family:var(--mono);
  font-size:12px;color:var(--muted);
}
.expertise .x-arrow{
  position:absolute;top:24px;right:24px;
  color:var(--muted-2);font-size:18px;
  transition:color .2s, transform .2s;
}
.expertise a{position:relative}

/* ============================================================
   SKILLS CLOUD
   ============================================================ */
.cloud{
  font-family:var(--sans);
  font-weight:500;
  font-size:clamp(20px,2.2vw,30px);
  line-height:1.55;
  letter-spacing:-.02em;
  color:var(--ink);
  max-width:90ch;
}
.cloud span{display:inline-block;margin:.05em .2em;padding:.05em .25em;border-radius:6px}
.cloud .em{font-style:normal;font-weight:600;color:var(--blue)}
.cloud .pill{
  background:var(--blue-soft);color:var(--blue);font-weight:500;
}
.cloud .dot{color:var(--blue);margin:0 .1em}
.cloud .mute{color:var(--muted)}

/* ============================================================
   INVERSE / NAVY SECTION
   ============================================================ */
section.navy{
  background:var(--navy);
  color:#e8edf7;
  border:none;
  overflow:hidden;
  position:relative;
}
section.navy::before{
  content:"";position:absolute;inset:-100px -100px auto auto;width:700px;height:600px;
  background:radial-gradient(closest-side, rgba(30,77,255,.45), transparent 70%);
  filter:blur(40px);pointer-events:none;
}
section.navy .sec-num{color:#7d97ff}
section.navy .sec-num::before{background:#7d97ff}
section.navy .sec-title{color:#fff}
section.navy .sec-title em{color:#90a8ff}
section.navy .sec-title small{color:#9ba8c4}
section.navy .prose{color:#cad3e6}
section.navy .prose p strong{color:#fff}
section.navy figcaption{color:#9ba8c4}

.cols-2{
  display:grid;grid-template-columns: 1.1fr .9fr;gap:60px;align-items:center;position:relative;z-index:1;
}
@media(max-width:880px){.cols-2{grid-template-columns:1fr;gap:40px}}
.cols-2 img{border-radius:14px;box-shadow:0 30px 60px -20px rgba(0,0,0,.4)}
.cols-2 figcaption{
  font-family:var(--mono);font-size:11px;color:var(--muted);margin-top:14px;letter-spacing:.04em;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq-list{list-style:none;max-width:880px}
.faq-list details{
  border-bottom:1px solid var(--rule);
  padding:22px 0;
  transition:padding .2s;
}
.faq-list details[open]{padding:26px 0 28px}
.faq-list summary{
  cursor:pointer;list-style:none;
  display:grid;grid-template-columns:1fr 32px;align-items:center;gap:20px;
  font-family:var(--sans);
  font-weight:600;
  font-size:clamp(18px,1.6vw,22px);
  line-height:1.35;
  letter-spacing:-.015em;
  color:var(--ink);
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{
  content:"";width:14px;height:14px;border-right:1.5px solid var(--blue);border-bottom:1.5px solid var(--blue);
  transform:rotate(45deg) translate(-2px,-2px);transition:transform .25s;
  justify-self:end;
}
.faq-list details[open] summary::after{transform:rotate(-135deg) translate(-2px,-2px)}
.faq-list summary:hover{color:var(--blue)}
.faq-list .a{
  margin-top:14px;font-size:16px;line-height:1.7;color:var(--ink-2);max-width:72ch;
}

/* ============================================================
   POSTS
   ============================================================ */
.posts{display:grid;gap:0}
.post{
  display:grid;grid-template-columns: 180px 1fr 24px;gap:36px;align-items:start;
  padding:32px 0;
  border-top:1px solid var(--rule);
  transition:padding .2s;
}
.post:first-child{border-top:1px solid var(--rule)}
.post:last-child{border-bottom:1px solid var(--rule)}
.post:hover{padding-left:8px}
.post:hover .post-arrow{color:var(--blue);transform:translateX(4px)}
.post .date{
  font-family:var(--mono);font-size:12px;color:var(--muted);padding-top:6px;
}
.post h3{
  font-family:var(--sans);font-weight:600;font-size:clamp(22px,2.2vw,28px);line-height:1.2;letter-spacing:-.02em;color:var(--ink);
}
.post h3 a{color:var(--ink)}
.post h3 a:hover{color:var(--blue)}
.post p{margin-top:8px;color:var(--ink-2);max-width:72ch;font-size:16px;line-height:1.6}
.post-arrow{color:var(--muted-2);font-size:22px;padding-top:4px;transition:color .2s,transform .2s}
@media(max-width:720px){.post{grid-template-columns:1fr;gap:10px}.post-arrow{display:none}}

/* ============================================================
   FOOTER
   ============================================================ */
footer{
  padding:72px 0 56px;
  background:var(--paper-2);
  border-top:1px solid var(--rule);
  color:var(--muted);
}
footer .container{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
@media(max-width:880px){footer .container{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:540px){footer .container{grid-template-columns:1fr}}
footer h4{
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--ink);margin-bottom:14px;font-weight:500;
}
footer ul{list-style:none}
footer li{margin-bottom:8px}
footer a{color:var(--muted);font-size:14px}
footer a:hover{color:var(--blue)}
footer .colophon{font-family:var(--sans);font-size:14px;line-height:1.6;color:var(--muted)}
footer .colophon em{font-style:normal;font-weight:600;color:var(--blue)}
footer .brand-footer{
  font-family:var(--sans);font-weight:600;font-size:18px;color:var(--ink);margin-bottom:14px;letter-spacing:-.02em;
}
footer .brand-footer em{font-style:normal;font-weight:600;color:var(--blue)}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes rise{
  from{opacity:0;transform:translateY(14px)}
  to{opacity:1;transform:translateY(0)}
}
.rise-1{animation:rise .8s .05s cubic-bezier(.2,.7,.2,1) both}
.rise-2{animation:rise .8s .16s cubic-bezier(.2,.7,.2,1) both}
.rise-3{animation:rise .8s .28s cubic-bezier(.2,.7,.2,1) both}
.rise-4{animation:rise .8s .42s cubic-bezier(.2,.7,.2,1) both}
.rise-5{animation:rise .8s .56s cubic-bezier(.2,.7,.2,1) both}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  .ticker-track{animation:none !important}
}

::selection{background:var(--blue);color:#fff}