:root {
  --ink: #0a2118;
  --ink-2: #123226;
  --paper: #f5f1e8;
  --paper-2: #fffdf7;
  --gold: #cba854;
  --gold-2: #ead48f;
  --green: #174c36;
  --muted: #5e6d65;
  --line: rgba(10, 33, 24, .14);
  --radius: 22px;
  --shadow: 0 18px 55px rgba(5, 22, 15, .12);
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Noto Sans Thai", "Leelawadee UI", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
button, input { font: inherit; }
.sp-skip {
  position: fixed;
  z-index: 9999;
  top: 8px;
  left: 8px;
  transform: translateY(-160%);
  padding: 10px 16px;
  border-radius: 10px;
  background: white;
  color: var(--ink);
}
.sp-skip:focus { transform: none; }
.sp-wrap { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }

.sp-header {
  position: sticky;
  top: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  min-height: 72px;
  padding: 10px max(20px, calc((100vw - 1160px) / 2));
  background: rgba(7, 28, 20, .94);
  color: #f7f1df;
  border-bottom: 1px solid rgba(234, 212, 143, .24);
  backdrop-filter: blur(16px);
}
.sp-brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.sp-brand img { width: 46px; height: 46px; object-fit: contain; }
.sp-brand span { display: grid; font-size: 12px; line-height: 1.25; letter-spacing: .11em; }
.sp-brand strong { color: var(--gold-2); font-size: 13px; }
.sp-nav { display: flex; align-items: center; gap: 24px; margin-left: auto; }
.sp-nav a { color: rgba(255,255,255,.82); text-decoration: none; font-size: 14px; }
.sp-nav a:hover, .sp-nav a:focus-visible { color: var(--gold-2); }
.sp-lang {
  display: inline-grid;
  place-items: center;
  min-width: 42px;
  min-height: 40px;
  border: 1px solid rgba(234, 212, 143, .35);
  border-radius: 12px;
}
.sp-header-cta {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--gold-2), var(--gold));
  color: #172013 !important;
  font-weight: 750;
}
.sp-mobile-menu { display: none; margin-left: auto; }
.sp-mobile-menu summary { list-style: none; cursor: pointer; border: 1px solid rgba(255,255,255,.25); border-radius: 12px; padding: 8px 12px; }
.sp-mobile-menu summary::-webkit-details-marker { display: none; }
.sp-mobile-panel {
  position: fixed;
  inset: 72px 12px auto;
  display: grid;
  gap: 4px;
  padding: 14px;
  border: 1px solid rgba(234, 212, 143, .26);
  border-radius: 18px;
  background: #0a2118;
  box-shadow: 0 24px 70px rgba(0,0,0,.38);
}
.sp-mobile-panel a { padding: 11px 12px; color: #fff; text-decoration: none; border-radius: 10px; }
.sp-mobile-panel a:hover { background: rgba(255,255,255,.08); }

.sp-hero {
  position: relative;
  overflow: hidden;
  min-height: 610px;
  padding: 72px 0 66px;
  background:
    radial-gradient(circle at 86% 15%, rgba(203,168,84,.22), transparent 32%),
    radial-gradient(circle at 16% 92%, rgba(63,137,94,.2), transparent 35%),
    linear-gradient(145deg, #06170f 0%, #0c2c20 55%, #123e2d 100%);
  color: #fff;
}
.sp-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .24;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 48px 48px;
}
.sp-breadcrumb { position: relative; z-index: 1; display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 45px; padding: 0; list-style: none; color: rgba(255,255,255,.58); font-size: 13px; }
.sp-breadcrumb li + li::before { content: "/"; margin-right: 8px; }
.sp-breadcrumb a { text-decoration: none; }
.sp-hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(280px, .7fr); gap: 70px; align-items: end; }
.sp-eyebrow { margin: 0 0 18px; color: var(--gold-2); font-size: 13px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.sp-hero h1 { max-width: 820px; margin: 0; font-size: clamp(42px, 6.2vw, 82px); line-height: 1.07; letter-spacing: -.045em; text-wrap: balance; }
.sp-lead { max-width: 760px; margin: 27px 0 0; color: rgba(255,255,255,.78); font-size: clamp(18px, 2vw, 23px); }
.sp-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.sp-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 50px; padding: 0 20px; border: 1px solid transparent; border-radius: 14px; text-decoration: none; font-weight: 750; }
.sp-btn-primary { background: linear-gradient(135deg, var(--gold-2), var(--gold)); color: #172013; }
.sp-btn-quiet { border-color: rgba(255,255,255,.3); color: #fff; background: rgba(255,255,255,.06); }
.sp-btn:hover { transform: translateY(-1px); box-shadow: 0 12px 30px rgba(0,0,0,.18); }
.sp-proof { padding: 24px; border: 1px solid rgba(234,212,143,.28); border-radius: var(--radius); background: rgba(3,16,10,.44); backdrop-filter: blur(10px); }
.sp-proof strong { display: block; color: var(--gold-2); font-size: 30px; line-height: 1.15; }
.sp-proof p { margin: 8px 0 0; color: rgba(255,255,255,.7); font-size: 14px; }
.sp-proof dl { display: grid; gap: 13px; margin: 24px 0 0; }
.sp-proof dl div { display: flex; justify-content: space-between; gap: 14px; padding-top: 12px; border-top: 1px solid rgba(255,255,255,.12); }
.sp-proof dt { color: rgba(255,255,255,.55); }
.sp-proof dd { margin: 0; text-align: right; font-weight: 700; }

.sp-section { padding: 86px 0; }
.sp-section-white { background: var(--paper-2); }
.sp-section-dark { background: var(--ink); color: #f7f2e6; }
.sp-section-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, .55fr); gap: 60px; align-items: end; margin-bottom: 38px; }
.sp-kicker { color: #857039; font-size: 13px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.sp-section h2 { max-width: 820px; margin: 8px 0 0; font-size: clamp(31px, 4.4vw, 55px); line-height: 1.12; letter-spacing: -.035em; text-wrap: balance; }
.sp-section-head > p { margin: 0; color: var(--muted); }
.sp-section-dark .sp-section-head > p { color: rgba(255,255,255,.65); }
.sp-answer {
  position: relative;
  display: grid;
  grid-template-columns: 70px minmax(0, 1fr);
  gap: 24px;
  padding: 30px;
  border: 1px solid rgba(203,168,84,.34);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(203,168,84,.12), rgba(255,255,255,.78));
  box-shadow: var(--shadow);
}
.sp-answer b { display: grid; place-items: center; width: 54px; height: 54px; border-radius: 50%; background: var(--ink); color: var(--gold-2); }
.sp-answer h2, .sp-answer h3 { margin: 0 0 8px; font-size: clamp(24px, 3vw, 35px); }
.sp-answer p { margin: 0; }
.sp-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.sp-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.sp-card { padding: 27px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.65); }
.sp-card-num { display: block; margin-bottom: 28px; color: #977d3d; font-size: 13px; font-weight: 800; letter-spacing: .12em; }
.sp-card h3 { margin: 0 0 10px; font-size: 23px; line-height: 1.32; }
.sp-card p { margin: 0; color: var(--muted); }
.sp-card ul { margin: 13px 0 0; padding-left: 20px; color: var(--muted); }
.sp-section-dark .sp-card { border-color: rgba(234,212,143,.19); background: rgba(255,255,255,.045); }
.sp-section-dark .sp-card p, .sp-section-dark .sp-card ul { color: rgba(255,255,255,.68); }

.sp-steps { counter-reset: step; display: grid; gap: 0; border-top: 1px solid var(--line); }
.sp-step { counter-increment: step; display: grid; grid-template-columns: 100px minmax(180px,.55fr) minmax(0,1fr); gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.sp-step::before { content: counter(step, decimal-leading-zero); color: #967c3d; font-weight: 800; letter-spacing: .12em; }
.sp-step h3 { margin: 0; font-size: 22px; }
.sp-step p { margin: 0; color: var(--muted); }

.sp-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.sp-table { width: 100%; min-width: 720px; border-collapse: collapse; }
.sp-table th, .sp-table td { padding: 18px 20px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.sp-table th { background: #0d2c20; color: #f7f0dc; font-size: 14px; }
.sp-table tr:last-child td { border-bottom: 0; }
.sp-note { margin: 18px 0 0; color: var(--muted); font-size: 14px; }

.sp-calculator { display: grid; grid-template-columns: minmax(230px,.65fr) minmax(0,1fr); gap: 28px; padding: 30px; border-radius: var(--radius); background: #0b2a1e; color: white; box-shadow: var(--shadow); }
.sp-calc-input label { display: block; color: rgba(255,255,255,.72); }
.sp-calc-value { margin: 14px 0; color: var(--gold-2); font-size: 38px; font-weight: 800; }
.sp-calc-input input[type="range"] { width: 100%; accent-color: var(--gold); }
.sp-calc-results { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; }
.sp-calc-result { padding: 20px; border: 1px solid rgba(234,212,143,.22); border-radius: 16px; background: rgba(255,255,255,.05); }
.sp-calc-result span { display: block; color: rgba(255,255,255,.62); font-size: 13px; }
.sp-calc-result strong { display: block; margin-top: 8px; color: var(--gold-2); font-size: 22px; }

.sp-projects { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 22px; }
.sp-project { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: 0 12px 36px rgba(5,22,15,.08); }
.sp-project-media { aspect-ratio: 16 / 10; overflow: hidden; background: #dfe8e1; }
.sp-project-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.sp-project:hover img { transform: scale(1.025); }
.sp-project-body { padding: 25px; }
.sp-project h3 { margin: 0 0 8px; font-size: 25px; }
.sp-project dl { display: grid; grid-template-columns: 112px minmax(0,1fr); gap: 9px 16px; margin: 18px 0 0; font-size: 14px; }
.sp-project dt { color: var(--muted); }
.sp-project dd { margin: 0; font-weight: 650; }

.sp-faq { display: grid; gap: 10px; }
.sp-faq details { border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.68); }
.sp-faq summary { position: relative; cursor: pointer; list-style: none; padding: 20px 56px 20px 22px; font-weight: 750; }
.sp-faq summary::-webkit-details-marker { display: none; }
.sp-faq summary::after { content: "+"; position: absolute; right: 22px; top: 16px; color: #977d3d; font-size: 28px; }
.sp-faq details[open] summary::after { content: "−"; }
.sp-faq details div { padding: 0 22px 22px; color: var(--muted); }
.sp-faq details div p { margin: 0; }

.sp-related { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.sp-related a { display: flex; min-height: 110px; align-items: flex-end; padding: 20px; border: 1px solid rgba(234,212,143,.2); border-radius: 16px; background: rgba(255,255,255,.045); color: #fff; text-decoration: none; }
.sp-related a:hover { border-color: var(--gold-2); background: rgba(203,168,84,.1); }
.sp-cta { padding: 72px 0; background: linear-gradient(135deg, #cfaa50, #ead58f); color: #172013; }
.sp-cta-grid { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 40px; align-items: center; }
.sp-cta h2 { margin: 0; font-size: clamp(32px,5vw,60px); line-height: 1.08; letter-spacing: -.04em; }
.sp-cta p { max-width: 720px; margin: 16px 0 0; }
.sp-cta .sp-btn { background: #0b2a1e; color: white; }

.sp-footer { padding: 52px 0 95px; background: #071c14; color: rgba(255,255,255,.7); }
.sp-footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 40px; }
.sp-footer h2, .sp-footer h3 { color: #fff; }
.sp-footer h2 { margin: 12px 0; font-size: 24px; }
.sp-footer h3 { margin: 0 0 14px; font-size: 14px; color: var(--gold-2); letter-spacing: .1em; text-transform: uppercase; }
.sp-footer nav { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 6px 16px; }
.sp-footer a { text-decoration: none; }
.sp-footer a:hover { color: var(--gold-2); }
.sp-footer small { display: block; margin-top: 32px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); }
.sp-mobile-actions { display: none; }

.sp-consent {
  position: fixed;
  z-index: 3000;
  right: 16px;
  bottom: 16px;
  width: min(430px, calc(100% - 32px));
  padding: 20px;
  border: 1px solid rgba(234,212,143,.32);
  border-radius: 20px;
  background: rgba(7,28,20,.97);
  color: white;
  box-shadow: 0 24px 70px rgba(0,0,0,.35);
}
.sp-consent[hidden] { display: none; }
.sp-consent p { margin: 0 0 14px; color: rgba(255,255,255,.72); font-size: 13px; }
.sp-consent-actions { display: flex; gap: 8px; }
.sp-consent button { flex: 1; min-height: 42px; border: 1px solid rgba(255,255,255,.25); border-radius: 11px; background: transparent; color: white; cursor: pointer; }
.sp-consent button:last-child { border-color: transparent; background: var(--gold); color: #142017; font-weight: 750; }

@media (max-width: 900px) {
  body { font-size: 16px; }
  .sp-wrap { width: min(100% - 28px, 720px); }
  .sp-nav { display: none; }
  .sp-mobile-menu { display: block; }
  .sp-brand span { display: none; }
  .sp-hero { min-height: auto; padding: 42px 0 50px; }
  .sp-breadcrumb { margin-bottom: 34px; }
  .sp-hero-grid, .sp-section-head, .sp-calculator, .sp-cta-grid, .sp-footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .sp-proof { max-width: 520px; }
  .sp-section { padding: 58px 0; }
  .sp-grid, .sp-grid-2, .sp-projects, .sp-related { grid-template-columns: 1fr; }
  .sp-step { grid-template-columns: 58px 1fr; }
  .sp-step p { grid-column: 2; }
  .sp-calc-results { grid-template-columns: 1fr; }
  .sp-footer nav { grid-template-columns: 1fr; }
  .sp-mobile-actions {
    position: fixed;
    z-index: 1000;
    left: 10px;
    right: 10px;
    bottom: calc(10px + env(safe-area-inset-bottom));
    display: grid;
    grid-template-columns: .75fr 1.25fr;
    gap: 8px;
    padding: 8px;
    border: 1px solid rgba(234,212,143,.28);
    border-radius: 18px;
    background: rgba(7,28,20,.92);
    backdrop-filter: blur(15px);
    box-shadow: 0 18px 45px rgba(0,0,0,.32);
  }
  .sp-mobile-actions a { display: grid; place-items: center; min-height: 48px; border-radius: 12px; color: white; text-decoration: none; font-weight: 750; }
  .sp-mobile-actions a:last-child { background: linear-gradient(135deg,var(--gold-2),var(--gold)); color: #152017; }
  .sp-consent { bottom: 86px; }
}

@media (max-width: 560px) {
  .sp-header { min-height: 66px; padding-inline: 14px; }
  .sp-brand img { width: 42px; height: 42px; }
  .sp-mobile-panel { inset-block-start: 66px; }
  .sp-hero h1 { font-size: clamp(38px, 12vw, 55px); }
  .sp-actions { display: grid; }
  .sp-btn { width: 100%; }
  .sp-answer { grid-template-columns: 1fr; padding: 23px; }
  .sp-answer b { width: 44px; height: 44px; }
  .sp-step { grid-template-columns: 44px 1fr; gap: 14px; }
  .sp-card, .sp-project-body { padding: 21px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

@media print {
  .sp-header, .sp-mobile-actions, .sp-consent, .sp-actions { display: none !important; }
  body { background: white; color: black; }
  .sp-hero, .sp-section-dark { background: white; color: black; }
  .sp-section { padding: 24px 0; }
}