/* EHOS Accounting — หน้าประชาสัมพันธ์ (D:\eha)
 * โทนสีตาม EHOS Sky: น้ำเงิน #5d87ff (primary ของ MatDash) + ฟ้า + ท้องฟ้าตามเวลา
 * ไม่โหลดอะไรจากภายนอก (ฟอนต์ Anuphan อยู่ใน assets/fonts) */
:root {
  --c-primary: #5d87ff;
  --c-primary-dark: #3b5bdb;
  --c-sky: #49beff;
  --c-ink: #1e293b;
  --c-muted: #64748b;
  --c-line: #e2e8f0;
  --c-soft: #f1f5ff;
  --c-bg: #f8fafc;
  --radius: 18px;
  --shadow: 0 12px 32px rgba(15, 23, 42, .08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  font-family: "Anuphan", "Tahoma", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-ink);
  background: var(--c-bg);
}
img { max-width: 100%; }
a { color: var(--c-primary); }
h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 .5em; }
.container { width: min(1180px, 100% - 40px); margin: 0 auto; }
.icon { width: 24px; height: 24px; flex-shrink: 0; }

/* ---------- แถบบน ---------- */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 50;
  transition: background .3s ease, box-shadow .3s ease;
}
.nav.is-solid { background: rgba(255, 255, 255, .92); backdrop-filter: blur(12px); box-shadow: 0 6px 20px rgba(15, 23, 42, .08); }
.nav-inner { display: flex; align-items: center; gap: 24px; height: 72px; }
.nav-logo { display: inline-flex; align-items: center; padding: 6px 12px; border-radius: 14px; background: #fff; box-shadow: 0 4px 14px rgba(15, 23, 42, .12); }
.nav-logo img { height: 40px; width: auto; display: block; }
.nav-links { display: flex; gap: 4px; margin-left: auto; list-style: none; padding: 0; margin-top: 0; margin-bottom: 0; }
.nav-links a { display: block; padding: 8px 14px; border-radius: 999px; color: #fff; font-weight: 500; text-decoration: none; font-size: .9375rem; text-shadow: 0 1px 4px rgba(15, 23, 42, .3); }
.nav-links a:hover { background: rgba(255, 255, 255, .18); }
.nav.is-solid .nav-links a { color: var(--c-ink); text-shadow: none; }
.nav.is-solid .nav-links a:hover { background: var(--c-soft); color: var(--c-primary); }
.nav-toggle { display: none; margin-left: auto; border: 0; background: rgba(255, 255, 255, .2); color: #fff; width: 42px; height: 42px; border-radius: 12px; cursor: pointer; }
.nav.is-solid .nav-toggle { background: var(--c-soft); color: var(--c-ink); }

/* ---------- ปุ่ม ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; border: 0;
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--c-primary); color: #fff; box-shadow: 0 10px 24px rgba(93, 135, 255, .35); }
.btn-primary:hover { background: var(--c-primary-dark); }
.btn-glass { background: rgba(255, 255, 255, .18); color: #fff; border: 1px solid rgba(255, 255, 255, .4); backdrop-filter: blur(8px); }
.btn-glass:hover { background: rgba(255, 255, 255, .3); }
.btn-light { background: #fff; color: var(--c-primary); box-shadow: var(--shadow); }

/* ---------- Hero: ท้องฟ้า (canvas จาก EHOS Sky) ---------- */
.ehos-sky {
  position: relative; isolation: isolate; color: #fff; overflow: hidden;
  background: linear-gradient(160deg, #1d4ed8 0%, #3b82f6 45%, #7dd3fc 100%);
}
.ehos-sky-scene { position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.ehos-sky-canvas { position: absolute; inset: 0; display: block; }
.hero { min-height: 100vh; display: flex; align-items: center; padding: 110px 0 80px; }
.hero::after { /* ไล่สีลงพื้นหน้า */
  content: ""; position: absolute; inset: auto 0 0; height: 120px; z-index: 1;
  background: linear-gradient(180deg, rgba(248, 250, 252, 0), var(--c-bg));
}
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero-kicker { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px; background: rgba(255, 255, 255, .18); border: 1px solid rgba(255, 255, 255, .35); font-size: .875rem; font-weight: 600; backdrop-filter: blur(8px); }
.hero h1 { font-size: clamp(2.4rem, 5vw, 3.75rem); font-weight: 700; margin: 18px 0 8px; text-shadow: 0 2px 18px rgba(15, 23, 42, .3); }
.hero h1 small { display: block; font-size: .42em; font-weight: 500; letter-spacing: .02em; opacity: .9; margin-top: 6px; }
.hero p.lead { font-size: 1.1875rem; max-width: 34em; opacity: .95; text-shadow: 0 1px 8px rgba(15, 23, 42, .3); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.hero-tags span { padding: 4px 12px; border-radius: 999px; background: rgba(15, 23, 42, .18); font-size: .8125rem; font-weight: 500; }
.hero-card {
  background: rgba(255, 255, 255, .95); color: var(--c-ink);
  border-radius: 24px; padding: 28px; box-shadow: 0 24px 60px rgba(15, 23, 42, .25);
}
.hero-card .logo-box { text-align: center; padding: 8px 0 20px; border-bottom: 1px solid var(--c-line); margin-bottom: 18px; }
.hero-card .logo-box img { width: 230px; }
.flow { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.flow li { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-radius: 14px; background: var(--c-soft); font-weight: 600; }
.flow li .n { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--c-primary); color: #fff; font-size: .875rem; }
.flow li small { margin-left: auto; color: var(--c-muted); font-weight: 400; font-size: .8125rem; }
.flow-caption { margin: 14px 0 0; font-size: .875rem; color: var(--c-muted); text-align: center; }

/* ---------- ส่วนเนื้อหา ---------- */
section.block { padding: 88px 0; }
section.block.alt { background: #fff; }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 48px; }
.section-head .eyebrow { display: inline-block; color: var(--c-primary); font-weight: 700; font-size: .875rem; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 6px; }
.section-head h2 { font-size: clamp(1.75rem, 3vw, 2.375rem); }
.section-head p { color: var(--c-muted); margin: 0; }

.stats { position: relative; z-index: 3; margin-top: -70px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat { background: #fff; border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.stat b { display: block; font-size: 1.75rem; color: var(--c-primary); line-height: 1.2; }
.stat span { color: var(--c-muted); font-size: .9375rem; }

.about { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: center; }
.about-visual { position: relative; border-radius: 24px; padding: 36px; color: #fff; min-height: 340px; display: flex; flex-direction: column; justify-content: flex-end; }
.about-visual > :not(.ehos-sky-scene) { position: relative; z-index: 2; }
.about-visual .quote { font-size: 1.375rem; font-weight: 600; line-height: 1.5; text-shadow: 0 1px 10px rgba(15, 23, 42, .35); }
.about-visual .who { opacity: .9; margin-top: 10px; font-size: .9375rem; }
.timeline { list-style: none; margin: 24px 0 0; padding: 0; border-left: 3px solid var(--c-line); }
.timeline li { position: relative; padding: 0 0 18px 22px; }
.timeline li::before { content: ""; position: absolute; left: -9px; top: 6px; width: 15px; height: 15px; border-radius: 50%; background: #fff; border: 3px solid var(--c-primary); }
.timeline b { display: block; }
.timeline span { color: var(--c-muted); font-size: .9375rem; }

.grid { display: grid; gap: 20px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 26px; transition: transform .2s ease, box-shadow .2s ease; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card h3 { font-size: 1.125rem; }
.card p { color: var(--c-muted); margin: 0; font-size: .9375rem; }
.card .ic { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 14px; margin-bottom: 16px; }
.ic-blue { background: #ecf2ff; color: #5d87ff; }
.ic-sky { background: #e8f7ff; color: #0ea5e9; }
.ic-green { background: #e6fffa; color: #13deb9; }
.ic-amber { background: #fef5e5; color: #f59e0b; }
.ic-rose { background: #fdede8; color: #fa896b; }
.ic-violet { background: #f3eaff; color: #8b5cf6; }

.module { display: flex; gap: 14px; align-items: flex-start; }
.module .no { flex-shrink: 0; min-width: 46px; height: 32px; display: grid; place-items: center; border-radius: 10px; background: var(--c-soft); color: var(--c-primary); font-weight: 700; font-size: .875rem; }
.module h3 { font-size: 1rem; margin-bottom: 4px; }

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step { position: relative; background: #fff; border-radius: var(--radius); padding: 28px 24px 24px; box-shadow: var(--shadow); }
.step::before { counter-increment: step; content: counter(step); display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: linear-gradient(135deg, var(--c-primary), var(--c-sky)); color: #fff; font-weight: 700; font-size: 1.125rem; margin-bottom: 14px; }
.step p { color: var(--c-muted); margin: 0; font-size: .9375rem; }

.chain { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 10px; margin-top: 40px; }
.chain .node { padding: 12px 20px; border-radius: 14px; background: #fff; border: 1px solid var(--c-line); font-weight: 700; box-shadow: 0 4px 14px rgba(15, 23, 42, .05); }
.chain .node small { display: block; font-weight: 400; color: var(--c-muted); font-size: .75rem; }
.chain .arrow { color: var(--c-primary); }

.req h3 { display: flex; align-items: center; gap: 10px; }
.req ul { margin: 12px 0 0; padding-left: 20px; color: var(--c-muted); font-size: .9375rem; }
.req li { margin: 4px 0; }
.req code { background: var(--c-soft); color: var(--c-primary-dark); padding: 1px 6px; border-radius: 6px; font-size: .875em; }
.his { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.his span { padding: 4px 12px; border-radius: 999px; background: var(--c-soft); color: var(--c-primary-dark); font-size: .8125rem; font-weight: 600; }

/* ---------- EHOS Sky ---------- */
.sky-band { border-radius: 28px; padding: 48px; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.sky-band > :not(.ehos-sky-scene) { position: relative; z-index: 2; }
.sky-band h2 { font-size: clamp(1.75rem, 3vw, 2.375rem); text-shadow: 0 2px 14px rgba(15, 23, 42, .3); }
.sky-band p { opacity: .95; text-shadow: 0 1px 8px rgba(15, 23, 42, .3); }
.sky-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.sky-list li { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: 16px; background: rgba(255, 255, 255, .16); border: 1px solid rgba(255, 255, 255, .3); backdrop-filter: blur(8px); }
.sky-list b { display: block; }
.sky-list span { font-size: .875rem; opacity: .9; }
.codename { display: inline-block; padding: 2px 12px; border-radius: 999px; background: linear-gradient(135deg, #38bdf8, #6366f1); font-size: .5em; vertical-align: middle; letter-spacing: .08em; }

/* ---------- ทีม / ติดต่อ ---------- */
.person { display: flex; gap: 16px; align-items: center; }
.avatar { flex-shrink: 0; width: 60px; height: 60px; border-radius: 18px; display: grid; place-items: center; font-weight: 700; font-size: 1.375rem; color: #fff; background: linear-gradient(135deg, var(--c-primary), var(--c-sky)); }
.person h3 { font-size: 1.0625rem; margin: 0; }
.person p { margin: 2px 0 0; }
.person .role { display: inline-block; margin-bottom: 4px; padding: 0 10px; border-radius: 999px; background: var(--c-soft); color: var(--c-primary); font-size: .75rem; font-weight: 700; }

.cta { border-radius: 28px; padding: 48px; text-align: center; background: linear-gradient(135deg, #5d87ff, #49beff); color: #fff; }
.cta h2 { font-size: clamp(1.5rem, 3vw, 2.125rem); }
.cta p { opacity: .95; max-width: 640px; margin: 0 auto 24px; }
.cta .row { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }

.notice { margin-top: 28px; padding: 18px 22px; border-radius: 16px; background: #fffbeb; border: 1px solid #fde68a; color: #78350f; font-size: .9375rem; }

footer.site { background: #0f172a; color: #94a3b8; padding: 40px 0; font-size: .875rem; }
footer.site .inner { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; justify-content: space-between; }
footer.site img { height: 36px; background: #fff; border-radius: 10px; padding: 4px 10px; }
footer.site a { color: #cbd5e1; }

/* ---------- เคลื่อนไหวเมื่อเลื่อนถึง ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .card, .btn { transition: none; }
}

/* ---------- จอเล็ก ---------- */
@media (max-width: 991.98px) {
  .nav-links { display: none; position: absolute; top: 72px; left: 20px; right: 20px; flex-direction: column; background: #fff; border-radius: 16px; padding: 10px; box-shadow: var(--shadow); }
  .nav-links.open { display: flex; }
  .nav-links a { color: var(--c-ink); text-shadow: none; }
  .nav-toggle { display: grid; place-items: center; }
  .hero-inner, .about, .sky-band { grid-template-columns: 1fr; }
  .stats, .grid-4, .steps { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 575.98px) {
  .stats, .grid-4, .grid-3, .grid-2, .steps { grid-template-columns: 1fr; }
  .sky-band, .cta { padding: 32px 22px; }
  .hero-card { padding: 20px; }
}