@font-face {
  font-family: "Inter";
  src: url("/fonts/inter-var.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --ink: #0a0a0a;
  --ink-2: #3d3d3d;
  --ink-3: #767676;
  --paper: #ffffff;
  --paper-2: #f4f4f4;
  --rule: #e4e4e4;
  --danger: #b3261e;
  --f: "Inter", "Noto Sans Thai", -apple-system, "Helvetica Neue", sans-serif;
  --gutter: 20px;
  --tabbar: 60px;
  color-scheme: light;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f);
  font-size: 16px;
  line-height: 1.6;
  padding-bottom: calc(var(--tabbar) + env(safe-area-inset-bottom));
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

[hidden] { display: none !important; }

/* ---------- top bar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 var(--gutter);
  padding-top: env(safe-area-inset-top);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.14em;
}

.brand img { border-radius: 6px; }

.lang {
  min-width: 44px;
  height: 32px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font: 600 12px/1 var(--f);
  letter-spacing: 0.08em;
  cursor: pointer;
}

/* ---------- type ---------- */

h1 {
  margin: 0;
  font-size: 30px;
  line-height: 1.28;
  font-weight: 800;
  letter-spacing: -0.02em;
}

:lang(th) h1 { letter-spacing: 0; line-height: 1.38; }

h2 { margin: 0; font-size: 18px; line-height: 1.4; font-weight: 700; }

.eyebrow {
  margin: 0 0 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.lead { margin: 16px 0 0; color: var(--ink-2); font-size: 16px; }

.label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 8px;
}

.num {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: 12px;
  color: var(--ink-3);
  letter-spacing: 0.06em;
}

/* ---------- layout ---------- */

.hero, .page-head { padding: 40px var(--gutter) 32px; border-bottom: 1px solid var(--rule); }

.hero h1 { font-size: 34px; }

.block { padding: 28px var(--gutter); }

.block-dark {
  margin: 8px var(--gutter) 28px;
  padding: 28px 24px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 20px;
}

.statement { margin: 0 0 20px; font-size: 18px; line-height: 1.6; font-weight: 600; }

.link-light {
  font-size: 14px;
  font-weight: 600;
  text-underline-offset: 4px;
}

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font: 600 15px/1 var(--f);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid var(--ink);
  transition: opacity 0.15s ease;
}

.btn:active { opacity: 0.7; }
.btn:disabled { opacity: 0.4; cursor: default; }
.btn-dark { background: var(--ink); color: var(--paper); }
.btn-line { background: transparent; color: var(--ink); }
.btn-wide { width: 100%; }

/* ---------- lists ---------- */

.index { list-style: none; margin: 0; padding: 0; }

.index li {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
}

.index .name { font-weight: 600; font-size: 16px; }

.service-list { padding: 0 var(--gutter); }

.service {
  display: grid;
  grid-template-columns: 36px 1fr;
  column-gap: 12px;
  padding: 24px 0;
  border-bottom: 1px solid var(--rule);
}

.service .num { padding-top: 4px; }
.service h2 { grid-column: 2; }
.service p { grid-column: 2; margin: 8px 0 0; color: var(--ink-2); font-size: 15px; }

.steps { list-style: none; margin: 0; padding: 8px var(--gutter) 0; }

.steps li {
  display: grid;
  grid-template-columns: 36px 1fr;
  column-gap: 12px;
  padding: 22px 0;
  border-bottom: 1px solid var(--rule);
}

.steps .num { padding-top: 4px; }
.steps p { margin: 6px 0 0; color: var(--ink-2); font-size: 15px; }

/* ---------- form ---------- */

.form { padding: 28px var(--gutter) 8px; display: grid; gap: 20px; }

.field { display: grid; gap: 8px; margin: 0; padding: 0; border: 0; min-width: 0; }

.field > span, .field > legend {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
  padding: 0;
}

.field > legend { margin-bottom: 8px; }

input, select, textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid var(--rule);
  border-radius: 12px;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.5 var(--f);
  appearance: none;
  -webkit-appearance: none;
}

select {
  background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(135deg, var(--ink) 50%, transparent 50%);
  background-position: calc(100% - 20px) 21px, calc(100% - 15px) 21px;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  padding-right: 40px;
}

textarea { resize: vertical; min-height: 112px; }

input:focus, select:focus, textarea:focus { outline: none; border-color: var(--ink); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }

.chip { position: relative; }

.chip input { position: absolute; opacity: 0; width: 1px; height: 1px; min-height: 0; }

.chip span {
  display: inline-block;
  padding: 9px 14px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}

.chip input:checked + span { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.chip input:focus-visible + span { outline: 2px solid var(--ink); outline-offset: 2px; }

.segmented {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--ink);
  border-radius: 999px;
  overflow: hidden;
}

.seg {
  min-height: 44px;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: 600 14px/1 var(--f);
  cursor: pointer;
}

.seg + .seg { border-left: 1px solid var(--ink); }
.seg[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

.form-error { margin: 0; color: var(--danger); font-size: 14px; font-weight: 500; }

.fineprint { margin: 0; color: var(--ink-3); font-size: 12px; line-height: 1.6; }

.done { padding: 48px var(--gutter); display: grid; gap: 16px; }
.done h2 { font-size: 24px; }
.done p { margin: 0; color: var(--ink-2); }

/* ---------- contact ---------- */

.contact-list { margin: 0; padding: 8px var(--gutter) 0; }

.contact-list div { padding: 18px 0; border-bottom: 1px solid var(--rule); }

.contact-list dt {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.contact-list dd { margin: 6px 0 0; font-size: 16px; font-weight: 500; }

/* Wide tracking breaks Thai glyph clusters, so Thai labels keep normal spacing. */
:lang(th) .label, :lang(th) .contact-list dt { letter-spacing: 0.02em; font-size: 12px; }

.contact-list a { text-underline-offset: 4px; }

.social { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }

.social a {
  display: inline-block;
  padding: 10px 16px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

/* ---------- tab bar ---------- */

.tabbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  height: calc(var(--tabbar) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--rule);
}

.tabbar a {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  color: var(--ink-3);
  position: relative;
}

.tabbar a.active { color: var(--ink); }

.tabbar a.active::before {
  content: "";
  position: absolute;
  top: 0;
  left: 30%;
  right: 30%;
  height: 2px;
  background: var(--ink);
}

@media (min-width: 640px) {
  body { max-width: 560px; margin: 0 auto; border-left: 1px solid var(--rule); border-right: 1px solid var(--rule); }
  .topbar, .tabbar { max-width: 560px; margin: 0 auto; }
}