:root {
  --navy: #0a2a52;
  --ink: #161f6b;
  --green: #1e9446;
  --teal: #007389;
  --bg: #ffffff;
  --alt: #f2f5f8;
  --text: #1c2733;
  --muted: #5f6b79;
  --line: #e3e8ee;
  --card: #ffffff;
  --nav-bg: rgba(255,255,255,.96);
  --nav-menu-bg: #ffffff;
  --input-bg: #ffffff;
  --input-border: #cfd7e0;
  --lang-btn-bg: #ffffff;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0; color: var(--text); background: var(--bg); line-height: 1.65; font-size: 16px;
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", "Leelawadee UI", "Noto Sans Thai", Tahoma, sans-serif;
}
a { color: var(--teal); }
img { max-width: 100%; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* nav */
.nav { position: sticky; top: 0; z-index: 10; background: var(--nav-bg); border-bottom: 1px solid var(--line); backdrop-filter: blur(6px); }
.nav-in { display: flex; align-items: center; gap: 20px; height: 64px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; margin-right: auto; }
.brand img {
  height: 40px; width: auto;
  border-radius: 6px;
  padding: 3px 6px;
}
#menu { display: flex; gap: 22px; }
#menu a { color: var(--navy); text-decoration: none; font-size: 14px; font-weight: 500; white-space: nowrap; }
#menu a:hover { color: var(--green); }
.lang { display: flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; flex-shrink: 0; }
.lang button { border: 0; background: var(--lang-btn-bg); padding: 5px 10px; font: inherit; font-size: 13px; cursor: pointer; color: var(--muted); white-space: nowrap; }
.lang button.on { background: #0a2a52; color: #fff; }

.burger { display: none; background: none; border: 0; padding: 6px; cursor: pointer; }
.burger span { display: block; width: 22px; height: 2px; background: var(--navy); margin: 5px 0; }

/* hero */
.hero { background: linear-gradient(135deg, #0a2a52 0%, #0d4a78 60%, #007389 100%); color: #fff; padding: 96px 0 72px; }
.eyebrow { letter-spacing: 3px; font-size: 13px; text-transform: uppercase; color: #9fd8b4; margin: 0 0 14px; }
.hero h1 { font-size: clamp(30px, 5vw, 52px); line-height: 1.2; margin: 0 0 18px; max-width: 820px; color: #fff; }
.lead { font-size: 18px; max-width: 700px; color: #dbe7f3; margin: 0 0 28px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 12px 26px; border-radius: 6px; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; border: 1px solid transparent; }
.btn.primary { background: var(--green); color: #fff; }
.btn.primary:hover { filter: brightness(0.92); }
.btn.ghost { border-color: rgba(255,255,255,.5); color: #fff; }
.btn.ghost:hover { background: rgba(255,255,255,.1); }
.badges { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 40px 0 0; }
.badges li { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.2); padding: 6px 14px; border-radius: 99px; font-size: 13px; color: #fff; }

/* sections */
.sec { padding: 72px 0; }
.sec.alt { background: var(--alt); }
h2 { font-size: 30px; color: var(--navy); margin: 0 0 8px; }
.sub { color: var(--muted); max-width: 720px; margin: 0 0 32px; }
.grid { display: grid; gap: 18px; }
.g4 { grid-template-columns: repeat(4, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 24px; }
.alt .card { border-color: transparent; }
.card h3 { margin: 0 0 8px; font-size: 18px; color: var(--navy); }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.ico { font-size: 30px; margin-bottom: 10px; }
.note { margin-top: 24px; font-size: 13px; color: var(--muted); border-left: 3px solid var(--green); padding-left: 12px; }

.steps { list-style: none; counter-reset: s; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 0; margin: 28px 0 0; }
.steps li { counter-increment: s; position: relative; padding-top: 54px; }
.steps li::before { content: counter(s); position: absolute; top: 0; left: 0; width: 40px; height: 40px; border-radius: 50%; background: #0a2a52; color: #fff; display: grid; place-items: center; font-weight: 700; }
.steps b { display: block; color: var(--navy); margin-bottom: 4px; }
.steps span { color: var(--muted); font-size: 15px; }

.two { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: start; }
.facts { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.facts li { background: var(--card); border-radius: 10px; padding: 18px 22px; border-left: 4px solid var(--green); }
.facts b { display: block; color: var(--navy); }
.facts span { color: var(--muted); font-size: 15px; }

.sec:not(.alt) .facts li { background: var(--alt); }

.agencies .card { padding: 18px 20px; }
.code { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 1px; color: #fff; background: #0a2a52; border-radius: 4px; padding: 2px 8px; margin-bottom: 8px; }
.agencies h3 { font-size: 15px; }
.agencies .local { font-size: 13px; color: var(--teal); margin-bottom: 6px; }
.agencies p { font-size: 14px; }
.ftas .card { border-top: 3px solid var(--green); }
.ftas dl { margin: 10px 0 0; font-size: 14px; }
.ftas dt { color: var(--muted); font-size: 12px; margin-top: 8px; }
.ftas dd { margin: 0; color: var(--text); }

.faq { display: grid; gap: 10px; margin-top: 24px; max-width: 860px; }
.faq details { background: var(--card); border-radius: 8px; padding: 14px 20px; border: 1px solid transparent; }
.faq summary { cursor: pointer; font-weight: 600; color: var(--navy); }
.faq details p { margin: 10px 0 0; color: var(--muted); }

.contact { margin: 0; }
.contact dt { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin-top: 16px; }
.contact dd { margin: 2px 0 0; font-weight: 500; }
.form { background: var(--alt); border-radius: 10px; padding: 26px; display: grid; gap: 14px; border: 1px solid transparent; }
.form label span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.form input, .form select, .form textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--input-border); border-radius: 6px;
  font: inherit; background: var(--input-bg); color: var(--text);
}
.form input:focus, .form select:focus, .form textarea:focus { outline: 2px solid var(--teal); outline-offset: 0; }
.form .invalid { border-color: #c0392b; }
.hint { font-size: 12px; color: var(--muted); margin: 0; }

footer { background: #0a2a52; color: #b8c6d6; font-size: 13px; padding: 22px 0; }
.foot { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

@media (max-width: 960px) {
  .g4 { grid-template-columns: repeat(2, 1fr); }
  .g3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .two { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 1080px) {
  .burger { display: block; }
  #menu { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--nav-menu-bg); flex-direction: column; gap: 0; border-bottom: 1px solid var(--line); }
  #menu.open { display: flex; }
  #menu a { padding: 14px 20px; border-top: 1px solid var(--line); }
}
@media (max-width: 760px) {
  .nav-in { gap: 10px; }
  .brand img { height: 28px; padding: 2px 4px; }
  .lang button { padding: 5px 7px; }
  .g4, .g3, .steps { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 48px; }
  .sec { padding: 52px 0; }
}

/* ERP 登录按钮 */
.btn.erp{padding:6px 12px;font-size:13px;border:1px solid var(--navy);color:var(--navy);border-radius:6px;text-decoration:none;white-space:nowrap}
.btn.erp:hover{background:#0a2a52;color:#fff;border-color:#0a2a52}
.foot a{color:inherit}
@media (max-width:760px){.btn.erp{padding:4px 8px;font-size:12px}}
@media (max-width:420px){.brand img{height:24px}.nav-in{gap:8px}.lang button{padding:5px 6px;font-size:12px}.btn.erp{padding:4px 6px;font-size:11px}}