:root {
  --tisco-blue-950: #05285e;
  --tisco-blue-900: #063878;
  --tisco-blue-800: #004b9b;
  --tisco-blue-700: #005eb8;
  --tisco-blue-600: #1174d8;
  --tisco-blue-100: #e8f4ff;
  --tisco-blue-050: #f6fbff;
  --teal-700: #008d89;
  --teal-600: #00a7a5;
  --teal-500: #15bdb7;
  --teal-100: #ddf7f5;
  --orange-100: #fff1e6;
  --red-100: #fff1f1;
  --green-100: #edfbf8;
  --ink: #12304f;
  --muted: #60758f;
  --line: #d7e8f8;
  --white: #ffffff;
  --shadow: 0 22px 70px rgba(5, 40, 94, 0.13);
  --shadow-soft: 0 12px 32px rgba(5, 40, 94, 0.09);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #ffffff 0%, #f8fcff 42%, #eef7ff 100%);
  font-family: "IBM Plex Sans Thai", "Prompt", "Noto Sans Thai", "Segoe UI", Tahoma, sans-serif;
  line-height: 1.68;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }

.container { width: min(var(--container), calc(100% - 42px)); margin: 0 auto; }
.skip-link { position: absolute; left: -999px; top: 12px; background: var(--tisco-blue-800); color: #fff; padding: 8px 14px; border-radius: 12px; z-index: 999; }
.skip-link:focus { left: 12px; }

.site-header {
  position: sticky; top: 0; z-index: 99;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(215,232,248,.78);
}
.nav-shell { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.brand { display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.brand-mark { font-family: "Prompt", sans-serif; font-size: 28px; line-height: 1; font-weight: 800; letter-spacing: -.055em; color: var(--tisco-blue-800); }
.brand-line { width: 1px; height: 24px; background: #b7d6ef; }
.brand-text { font-family: "Prompt", sans-serif; font-size: 16px; font-weight: 600; color: var(--tisco-blue-950); }
.nav { display: flex; align-items: center; gap: 24px; font-family: "Prompt", sans-serif; font-size: 14px; font-weight: 600; color: var(--tisco-blue-950); }
.nav a:not(.nav-cta) { position: relative; padding: 6px 0; }
.nav a:not(.nav-cta)::after { content:""; position:absolute; left:0; right:0; bottom:0; height:2px; border-radius:2px; background: var(--teal-600); transform: scaleX(0); transform-origin: center; transition:.22s; }
.nav a:not(.nav-cta):hover { color: var(--tisco-blue-700); }
.nav a:not(.nav-cta):hover::after { transform: scaleX(1); }
.nav-cta { color:#fff; background: linear-gradient(135deg, var(--tisco-blue-800), var(--tisco-blue-600)); padding: 10px 18px; border-radius: 12px; box-shadow: 0 12px 24px rgba(0, 94, 184, .22); }
.mobile-menu { display: none; border: 0; background: transparent; padding: 8px; cursor: pointer; }
.mobile-menu span { display: block; width: 25px; height: 2px; background: var(--tisco-blue-950); margin: 5px 0; border-radius: 2px; }

.hero { position: relative; overflow: hidden; padding: 92px 0 54px; background: linear-gradient(115deg, #f4fbff 0%, #ffffff 46%, #eaf7ff 100%); }
.hero-bg::before { content:""; position:absolute; inset: 0; background: radial-gradient(circle at 18% 18%, rgba(0,94,184,.12), transparent 30%), radial-gradient(circle at 78% 8%, rgba(0,167,165,.14), transparent 28%), linear-gradient(90deg, rgba(255,255,255,.9) 0 42%, rgba(255,255,255,.3) 70%); }
.hero::after { content:""; position:absolute; inset:auto -8% -98px -8%; height:150px; background:#fff; transform: rotate(-1.6deg); transform-origin:left center; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: .92fr 1.08fr; gap: 48px; align-items: center; }
.eyebrow { display:inline-flex; align-items:center; gap:9px; margin-bottom:14px; font-family:"Prompt", sans-serif; color: var(--teal-700); font-size: 13px; font-weight: 700; letter-spacing: .02em; }
.eyebrow::before { content:""; width: 26px; height: 3px; border-radius: 99px; background: var(--teal-500); }
.eyebrow.centered { justify-content:center; }
.hero h1 { margin: 0 0 14px; font-family:"Prompt", sans-serif; font-size: clamp(58px, 7.8vw, 112px); line-height:.94; letter-spacing:-.075em; color: var(--tisco-blue-950); }
.hero h1 span { color: var(--teal-700); }
.hero-subtitle { margin: 0 0 16px; color: var(--tisco-blue-950); font-family:"Prompt", sans-serif; font-size: clamp(19px, 2.1vw, 27px); line-height: 1.42; font-weight: 700; }
.hero-detail { margin: 0; color: var(--muted); max-width: 610px; font-size: 16px; }
.hero-actions { display:flex; flex-wrap:wrap; gap: 14px; margin: 30px 0 24px; }
.button { display:inline-flex; align-items:center; justify-content:center; min-height: 50px; border-radius: 14px; padding: 12px 22px; border:1px solid transparent; cursor:pointer; font-family:"Prompt", sans-serif; font-weight:700; font-size:15px; transition:.22s ease; }
.button-primary { color:#fff; background: linear-gradient(135deg, var(--tisco-blue-800), var(--tisco-blue-600)); box-shadow: 0 16px 30px rgba(0, 94, 184, .25); }
.button-primary:hover { transform: translateY(-2px); box-shadow: 0 20px 38px rgba(0, 94, 184, .31); }
.button-secondary { color: var(--tisco-blue-800); background: rgba(255,255,255,.9); border-color: rgba(0,94,184,.28); }
.button-secondary:hover { border-color: var(--tisco-blue-700); transform: translateY(-2px); }
.hero-chips { display:flex; flex-wrap:wrap; gap:12px; }
.hero-chips span { display:inline-flex; align-items:center; gap:10px; min-height:50px; padding: 11px 17px; border:1px solid rgba(215,232,248,.95); border-radius:999px; background:rgba(255,255,255,.92); box-shadow:var(--shadow-soft); color:var(--tisco-blue-950); font-family:"Prompt", sans-serif; font-weight:600; }
.hero-chips img { width:28px; height:28px; }
.hero-visual { position: relative; border-radius: 44px; padding: 10px; background: rgba(255,255,255,.65); border: 1px solid rgba(215,232,248,.95); box-shadow: var(--shadow); }
.hero-visual::before { content:""; position:absolute; inset: -16px 26px auto auto; width:84px; height:84px; background:var(--teal-100); border-radius: 24px; transform: rotate(11deg); z-index: -1; }
.hero-visual img { border-radius: 36px; }

.section { padding: 78px 0; }
.section-heading { text-align:center; max-width:760px; margin:0 auto 40px; }
.section-heading h2 { margin:0; color: var(--tisco-blue-950); font-family:"Prompt", sans-serif; font-size: clamp(30px, 4vw, 46px); line-height:1.18; letter-spacing:-.035em; }
.section-heading p { margin: 14px auto 0; color: var(--muted); font-size: 17px; }

.problem { background:#fff; }
.problem-cards { display:grid; grid-template-columns: repeat(4, 1fr); gap:22px; }
.problem-card { min-height: 270px; padding: 28px 24px; border-radius: 24px; background: linear-gradient(180deg, #fff 0%, #fafdff 100%); border:1px solid rgba(215,232,248,.94); box-shadow: var(--shadow-soft); text-align:center; transition:.22s ease; }
.problem-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.problem-card img { width:76px; height:76px; margin:0 auto 18px; }
.problem-card h3 { margin: 0 0 10px; font-family:"Prompt", sans-serif; font-size: 18px; line-height: 1.38; color: var(--tisco-blue-950); }
.problem-card p { margin:0; color: var(--muted); font-size: 14.5px; }

.benefits { background: linear-gradient(180deg, #f7fcff 0%, #fff 100%); }
.benefit-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: stretch; }
.benefit-panel { position:relative; padding: 70px 32px 30px; border-radius: 28px; background:#fff; border:1px solid rgba(215,232,248,.95); box-shadow: var(--shadow-soft); }
.panel-tab { position:absolute; top:-18px; left:50%; transform:translateX(-50%); display:inline-flex; align-items:center; gap:10px; min-width: 270px; justify-content:center; height:58px; border-radius: 16px; color:#fff; font-family:"Prompt", sans-serif; font-weight:700; box-shadow:0 14px 28px rgba(5,40,94,.18); }
.panel-tab img { width:26px; height:26px; filter: brightness(0) invert(1); }
.panel-tab.blue { background: linear-gradient(135deg, var(--tisco-blue-800), var(--tisco-blue-600)); }
.panel-tab.teal { background: linear-gradient(135deg, var(--teal-700), var(--teal-500)); }
.benefit-row { display:grid; grid-template-columns: 70px 1fr; gap:18px; align-items:flex-start; padding: 20px 0; border-bottom:1px solid #edf5fc; }
.benefit-row:last-child { border-bottom:0; padding-bottom:0; }
.benefit-row > img { width:58px; height:58px; }
.benefit-row h3 { margin:0 0 5px; font-family:"Prompt", sans-serif; font-size:18px; line-height:1.38; color: var(--tisco-blue-950); }
.benefit-row p { margin:0; color:var(--muted); font-size:15px; }

.example { background: #fff; }
.before-after { position:relative; display:grid; grid-template-columns: 1fr 78px 1fr; align-items:stretch; gap:0; }
.case-card { display:grid; grid-template-columns: 44% 56%; gap:18px; align-items:center; min-height: 290px; padding: 26px; border:1px solid rgba(215,232,248,.95); box-shadow: var(--shadow-soft); }
.case-card.before { border-radius:28px 0 0 28px; background: linear-gradient(135deg, #fff7f7 0%, #fff 70%); }
.case-card.after { border-radius:0 28px 28px 0; background: linear-gradient(135deg, #f0fbf8 0%, #fff 70%); }
.case-visual img { max-height: 220px; margin:0 auto; }
.case-label { display:inline-flex; margin-bottom: 14px; font-family:"Prompt", sans-serif; font-weight:700; font-size: 20px; }
.case-label.red { color:#d44f4f; }
.case-label.green { color: var(--teal-700); }
.case-content ul { list-style:none; padding:0; margin:0; display:grid; gap:10px; }
.case-content li { position:relative; padding-left: 32px; font-weight:600; color:var(--ink); }
.case-content li::before { content:""; position:absolute; left:0; top:.28em; width:20px; height:20px; border-radius:50%; background:#e94a4a; }
.case-content li::after { content:"×"; position:absolute; left:5px; top:-.04em; color:#fff; font-weight:800; }
.after .case-content li::before { background: var(--teal-600); }
.after .case-content li::after { content:"✓"; left:4px; top:.02em; }
.arrow-circle { width:78px; height:78px; align-self:center; justify-self:center; border-radius:50%; display:grid; place-items:center; color:var(--tisco-blue-800); font-size:32px; font-family:"Prompt", sans-serif; font-weight:700; background:#fff; border:1px solid rgba(215,232,248,.95); box-shadow:0 15px 36px rgba(5,40,94,.14); z-index:2; }
.responsible-note { width:min(850px, 100%); margin:24px auto 0; display:flex; align-items:center; justify-content:center; gap:10px; border-radius: 18px; padding: 16px 20px; background:#eef7ff; border:1px solid #d9eafd; color:var(--tisco-blue-950); text-align:center; }
.responsible-note img { width:28px; height:28px; }

.testimonials { background: linear-gradient(180deg, #f7fcff 0%, #fff 100%); }
.testimonial-grid { display:grid; grid-template-columns: repeat(3, 1fr); gap:24px; }
.testimonial-card { position:relative; padding: 34px 28px 28px; border-radius: 26px; background:#fff; border:1px solid rgba(215,232,248,.95); box-shadow: var(--shadow-soft); min-height: 280px; }
.quote-mark { position:absolute; left:24px; top:14px; font-family:Georgia, serif; font-size:72px; line-height:1; color:#b7d6ef; }
.avatar { width:78px; height:78px; border-radius:50%; margin: 10px auto 18px; box-shadow:0 10px 22px rgba(5,40,94,.12); }
.testimonial-card p { margin:0 0 18px; color: var(--muted); font-size:15.5px; }
.testimonial-card strong { color: var(--tisco-blue-800); font-family:"Prompt", sans-serif; font-size:15px; }
.dots { display:flex; justify-content:center; gap:10px; margin-top:24px; }
.dots span { width:10px; height:10px; border-radius:999px; background:#cbddee; }
.dots .active { width:24px; background:var(--tisco-blue-700); }

.process { background:#fff; }
.process-steps { list-style:none; margin:0; padding:0; display:grid; grid-template-columns: repeat(4, 1fr); gap:26px; position:relative; }
.process-steps li { position:relative; text-align:center; }
.process-steps li:not(:last-child)::after { content:""; position:absolute; left:calc(50% + 58px); top:56px; width:calc(100% - 70px); border-top:2px dashed #9bd4eb; }
.process-steps span { width:112px; height:112px; margin:0 auto 18px; border-radius:50%; display:grid; place-items:center; background:#fff; border:1px solid #d8e8f6; box-shadow: var(--shadow-soft); }
.process-steps img { width:60px; height:60px; }
.process-steps h3 { margin:0 0 6px; color:var(--tisco-blue-950); font-family:"Prompt", sans-serif; font-size:18px; }
.process-steps p { margin:0; color:var(--muted); font-size:14.5px; }

.cta-section { padding: 66px 0; background: linear-gradient(180deg, #fff 0%, #f2f8ff 100%); }
.cta-grid { position:relative; overflow:hidden; display:grid; grid-template-columns: .82fr 1fr; gap:46px; align-items:center; padding: 48px; border-radius: 28px; background: linear-gradient(135deg, #00458d 0%, #0060bd 54%, #0071d6 100%); box-shadow: 0 28px 74px rgba(0, 75, 155, .28); }
.cta-grid::before { content:""; position:absolute; inset:0; background: radial-gradient(circle at 20% 24%, rgba(255,255,255,.14), transparent 26%), radial-gradient(circle at 82% 18%, rgba(0,167,165,.22), transparent 30%); pointer-events:none; }
.cta-copy, .lead-form { position:relative; z-index:1; }
.cta-copy h2 { margin:0 0 14px; font-family:"Prompt", sans-serif; color:#fff; font-size: clamp(31px, 4vw, 48px); line-height:1.18; letter-spacing:-.04em; }
.cta-copy p { margin:0 0 24px; color:#ddecff; font-size:17px; max-width:480px; }
.building { width:min(340px, 88%); margin-top:10px; filter: drop-shadow(0 16px 30px rgba(0,0,0,.18)); }
.lead-form { padding: 28px; border-radius: 24px; background:#fff; box-shadow:0 22px 58px rgba(4,28,62,.24); }
.form-grid { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.form-row { margin-bottom:14px; }
.form-row label { display:block; margin-bottom:6px; color:var(--tisco-blue-950); font-family:"Prompt", sans-serif; font-weight:600; font-size:14px; }
.form-row label span { color:#db4444; }
input, textarea { width:100%; border:1px solid #d7e6f6; border-radius:12px; padding: 12px 13px; color:var(--ink); background:#fbfdff; outline:0; transition:.2s ease; }
textarea { resize: vertical; min-height:104px; }
input:focus, textarea:focus { border-color: var(--tisco-blue-600); box-shadow:0 0 0 4px rgba(17,116,216,.11); background:#fff; }
.form-button { width:100%; margin-top:4px; }
.privacy-note { display:flex; align-items:center; justify-content:center; gap:8px; margin:14px 0 0; color:#7a8da5; font-size:13px; text-align:center; }
.privacy-note img { width:16px; height:16px; }
.form-status { margin-top:14px; padding:0; font-weight:600; text-align:center; }
.form-status.success, .form-status.error { padding:10px 12px; border-radius: 12px; }
.form-status.success { color:#0a7c55; background:#eaf8f3; }
.form-status.error { color:#be3d3d; background:#fff0f0; }

.site-footer { padding: 28px 0; background:#05285e; color:#dbeafe; }
.footer-grid { display:flex; align-items:center; justify-content:space-between; gap:24px; }
.site-footer strong { color:#fff; font-family:"Prompt", sans-serif; font-size:18px; }
.site-footer p { margin:6px 0 0; color:#b8d3ee; }
.footer-contact { display:flex; gap:18px; flex-wrap:wrap; font-size:14px; justify-content:flex-end; }

.reveal { opacity:0; transform: translateY(18px); transition: .65s ease; }
.reveal.is-visible { opacity:1; transform: translateY(0); }
.delay-1 { transition-delay: .08s; }
.delay-2 { transition-delay: .16s; }
.delay-3 { transition-delay: .24s; }

@media (max-width: 1080px) {
  .nav { gap:16px; font-size:13px; }
  .hero-grid { grid-template-columns:1fr; }
  .hero-visual { max-width:720px; margin:0 auto; }
  .problem-cards { grid-template-columns: repeat(2,1fr); }
  .process-steps { grid-template-columns: repeat(2,1fr); row-gap:36px; }
  .process-steps li::after { display:none; }
}
@media (max-width: 820px) {
  .container { width: min(100% - 30px, var(--container)); }
  .mobile-menu { display:block; }
  .nav { position:absolute; inset:78px 15px auto 15px; flex-direction:column; align-items:stretch; padding:16px; background:#fff; border:1px solid var(--line); border-radius:20px; box-shadow:var(--shadow); display:none; }
  .nav.is-open { display:flex; }
  .nav a { padding:10px 12px; }
  .nav-cta { text-align:center; }
  .hero { padding: 58px 0 42px; }
  .hero h1 { font-size: clamp(52px, 16vw, 84px); }
  .benefit-grid, .testimonial-grid, .cta-grid { grid-template-columns:1fr; }
  .before-after { grid-template-columns:1fr; gap:18px; }
  .case-card.before, .case-card.after { border-radius:24px; }
  .arrow-circle { transform: rotate(90deg); }
  .cta-grid { padding:28px; }
  .footer-grid { flex-direction:column; align-items:flex-start; }
  .footer-contact { justify-content:flex-start; }
}
@media (max-width: 620px) {
  .brand-text, .brand-line { display:none; }
  .section { padding:60px 0; }
  .problem-cards, .process-steps { grid-template-columns:1fr; }
  .benefit-panel { padding:66px 20px 24px; }
  .panel-tab { min-width:230px; }
  .benefit-row { grid-template-columns:52px 1fr; gap:12px; }
  .benefit-row > img { width:48px; height:48px; }
  .case-card { grid-template-columns:1fr; text-align:left; }
  .case-visual img { max-height: 180px; }
  .form-grid { grid-template-columns:1fr; gap:0; }
}