:root {
  --ink: #101418;
  --muted: #5b6570;
  --line: #e3e6eb;
  --accent: #0f766e;
  --soft: #f6f7f9;
  --wrap: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font: 17px/1.65 -apple-system, "SF Pro Text", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.wrap.narrow { max-width: 720px; }

/* top */
.top { border-bottom: 1px solid var(--line); position: sticky; top: 0; background: rgba(255,255,255,.94); backdrop-filter: blur(8px); z-index: 10; }
.top-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 20px; }
.wordmark { font-weight: 800; letter-spacing: .16em; font-size: 15px; color: var(--ink); text-decoration: none; }
nav { display: flex; gap: 22px; align-items: center; }
nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
nav a:hover { color: var(--ink); }
.nav-cta { color: var(--accent); font-weight: 600; }

/* hero */
.hero { padding: 88px 0 72px; border-bottom: 1px solid var(--line); }
.kicker { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); margin-bottom: 20px; }
h1 { font-size: clamp(34px, 5.2vw, 60px); line-height: 1.12; letter-spacing: -.02em; font-weight: 750; }
.lede { margin-top: 22px; font-size: clamp(16px, 1.6vw, 19px); color: #39424c; max-width: 660px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }

.btn { display: inline-block; padding: 13px 22px; border-radius: 10px; text-decoration: none; font-size: 15px; font-weight: 600; border: 1px solid transparent; cursor: pointer; }
.btn.primary { background: var(--ink); color: #fff; }
.btn.primary:hover { background: #000; }
.btn.ghost { border-color: var(--line); color: var(--ink); background: #fff; }

.figures { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 56px; border-top: 1px solid var(--line); padding-top: 26px; }
.figures dt { font-size: 34px; font-weight: 750; letter-spacing: -.02em; }
.figures dd { font-size: 13.5px; color: var(--muted); margin-top: 4px; line-height: 1.5; }

/* sections */
section h2 { font-size: clamp(24px, 2.8vw, 34px); letter-spacing: -.01em; }
.doors, .capabilities, .inquiry { padding: 76px 0; }
.band { background: var(--soft); padding: 76px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.door-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 34px; }
.door { border: 1px solid var(--line); border-radius: 14px; padding: 28px 26px; display: flex; flex-direction: column; gap: 14px; }
.door-k { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); font-weight: 700; }
.door h3 { font-size: 22px; letter-spacing: -.01em; }
.door p { color: #39424c; }
.door ul { list-style: none; display: grid; gap: 8px; margin-top: 2px; }
.door li { padding-left: 18px; position: relative; font-size: 15px; color: #39424c; }
.door li::before { content: ""; position: absolute; left: 0; top: .62em; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.link { margin-top: auto; color: var(--accent); font-weight: 600; text-decoration: none; font-size: 15px; }
.link:hover { text-decoration: underline; }

.cap-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 34px; }
.cap h3 { font-size: 17px; margin-bottom: 8px; }
.cap p { font-size: 14.5px; color: #4a545f; }

.band-lede { margin-top: 16px; max-width: 720px; color: #39424c; }
.regs { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.regs li { border: 1px solid #cfd6dd; background: #fff; border-radius: 999px; padding: 8px 16px; font-size: 14px; font-weight: 600; }
.regs span { font-weight: 400; color: var(--muted); margin-left: 8px; font-size: 13px; }

/* form */
form { margin-top: 30px; display: grid; gap: 16px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label { display: grid; gap: 6px; font-size: 13.5px; color: var(--muted); font-weight: 500; }
input, select, textarea {
  width: 100%; padding: 11px 12px; border: 1px solid #cfd6dd; border-radius: 9px;
  font: inherit; font-size: 15px; color: var(--ink); background: #fff;
}
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(15,118,110,.25); border-color: var(--accent); }
textarea { resize: vertical; }
form .btn { justify-self: start; margin-top: 6px; }
.form-note { font-size: 12.5px; color: var(--muted); }

.result { margin-top: 14px; padding: 14px 16px; border-radius: 10px; font-size: 14.5px; }
.result.ok { background: #e7f4f1; color: #0b5f59; border: 1px solid #bfe3dc; }
.result.err { background: #fdecec; color: #b91c1c; border: 1px solid #f6caca; }

/* footer */
.foot { border-top: 1px solid var(--line); padding: 54px 0 64px; }
.foot-inner { display: grid; grid-template-columns: 1fr 1.2fr 1fr; gap: 36px; }
.small { font-size: 13px; color: var(--muted); margin-top: 8px; }
.zh h3 { font-size: 15px; margin-bottom: 8px; }
.zh p { font-size: 13.5px; color: #4a545f; }
.fine { text-align: right; }

@media (max-width: 860px) {
  nav { display: none; }
  .door-grid, .cap-grid, .row, .figures, .foot-inner { grid-template-columns: 1fr; }
  .fine { text-align: left; }
  .hero { padding: 56px 0 48px; }
  .doors, .capabilities, .inquiry, .band { padding: 52px 0; }
}