/* ============================================================
   Kaitong Trade — brand styles
   Palette: cream #F2EEE6 / dark green #1D4A42 / deep #12332C
   ============================================================ */
:root {
  --cream: #F2EEE6;
  --cream-2: #EAE4D8;
  --green: #1D4A42;
  --green-2: #2A5F55;
  --green-deep: #12332C;
  --ink: #22302C;
  --muted: #6B7772;
  --line: #D8D0C0;
  --white: #FFFFFF;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(18, 51, 44, .08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Helvetica Neue", "Segoe UI", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--cream);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(242, 238, 230, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 44px; height: auto; border-radius: 50%; }
.brand-name { font-weight: 700; color: var(--green); line-height: 1.2; font-size: 15px; letter-spacing: .02em; }
.brand-name small { display: block; font-weight: 500; color: var(--muted); font-size: 11.5px; letter-spacing: .06em; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 28px; font-size: 14.5px; font-weight: 500; }
.nav-links a { color: var(--ink); opacity: .85; transition: opacity .15s; }
.nav-links a:hover { opacity: 1; color: var(--green); }
.nav-cta { display: flex; align-items: center; gap: 12px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px; border-radius: 999px; border: 1.5px solid var(--green);
  font-weight: 600; font-size: 14.5px; cursor: pointer; transition: all .18s;
  background: transparent; color: var(--green); white-space: nowrap;
}
.btn:hover { background: rgba(29, 74, 66, .08); }
.btn-primary { background: var(--green); color: var(--white); }
.btn-primary:hover { background: var(--green-2); border-color: var(--green-2); }
.btn-light { border-color: rgba(255,255,255,.6); color: var(--white); }
.btn-light:hover { background: rgba(255,255,255,.12); }
.btn-lg { padding: 15px 32px; font-size: 15.5px; }

.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-toggle svg { width: 26px; height: 26px; stroke: var(--green); }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, var(--green-deep) 0%, var(--green) 60%, #245A4F 100%);
  color: var(--white);
  position: relative; overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; right: -180px; top: -180px;
  width: 560px; height: 560px; border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,.12);
  box-shadow: inset 0 0 0 40px rgba(255,255,255,.03);
}
.hero-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; padding: 88px 0 96px; }
.hero-kicker {
  display: inline-block; font-size: 12.5px; letter-spacing: .22em; text-transform: uppercase;
  color: #BFD6CE; border: 1px solid rgba(255,255,255,.25); border-radius: 999px;
  padding: 6px 16px; margin-bottom: 24px;
}
.hero h1 { font-size: clamp(34px, 4.6vw, 56px); line-height: 1.12; font-weight: 700; letter-spacing: -.01em; }
.hero h1 em { font-style: normal; color: #E8C87A; }
.hero p.lead { margin: 22px 0 32px; font-size: 17.5px; color: #D9E4DF; max-width: 560px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-img { border-radius: var(--radius); overflow: hidden; box-shadow: 0 24px 60px rgba(0,0,0,.28); }
.hero-img img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3.4; }

.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius); overflow: hidden; margin-top: -34px; position: relative; z-index: 2; }
.hero-stats > div { background: var(--green-deep); padding: 22px 24px; text-align: center; }
.hero-stats b { display: block; font-size: 24px; color: #E8C87A; }
.hero-stats span { font-size: 12.5px; letter-spacing: .08em; text-transform: uppercase; color: #BFD6CE; }

/* ---------- Sections ---------- */
section { padding: 84px 0; }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow { font-size: 12.5px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; color: var(--green-2); margin-bottom: 12px; }
h2 { font-size: clamp(26px, 3.2vw, 38px); line-height: 1.2; color: var(--green-deep); letter-spacing: -.01em; }
.section-head p { margin-top: 14px; color: var(--muted); font-size: 16px; }

/* product cards */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.p-card {
  background: var(--white); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s;
  display: flex; flex-direction: column;
}
.p-card:hover { transform: translateY(-4px); box-shadow: 0 18px 44px rgba(18,51,44,.14); }
.p-card .thumb { aspect-ratio: 16/10.5; overflow: hidden; background: var(--cream-2); }
.p-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s; }
.p-card:hover .thumb img { transform: scale(1.04); }
.p-card .body { padding: 22px 24px 26px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.p-card h3 { color: var(--green-deep); font-size: 19px; }
.p-card .ref { font-size: 11.5px; font-weight: 700; letter-spacing: .14em; color: var(--green-2); }
.p-card p { color: var(--muted); font-size: 14.5px; flex: 1; }
.p-card .spec { font-size: 13px; color: var(--green); background: rgba(29,74,66,.07); border-radius: 8px; padding: 8px 12px; }

/* service strip */
.svc { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.svc .num { font-size: 13px; font-weight: 700; color: var(--green-2); letter-spacing: .12em; margin-bottom: 10px; }
.svc h3 { color: var(--green-deep); font-size: 18px; margin-bottom: 8px; }
.svc p { color: var(--muted); font-size: 14.5px; }

/* buyers table */
.buyers { width: 100%; border-collapse: collapse; background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.buyers th, .buyers td { text-align: left; padding: 16px 20px; border-bottom: 1px solid var(--cream-2); font-size: 14.5px; vertical-align: top; }
.buyers th { background: var(--green); color: var(--white); font-size: 12.5px; letter-spacing: .1em; text-transform: uppercase; }
.buyers tr:last-child td { border-bottom: none; }
.buyers td:first-child { font-weight: 600; color: var(--green-deep); width: 30%; }
.buyers .lines { font-weight: 700; color: var(--green-2); white-space: nowrap; }

/* ---------- Inquiry form ---------- */
.inquiry { background: var(--green-deep); color: var(--white); }
.inquiry .wrap { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.inquiry .eyebrow { color: #BFD6CE; }
.inquiry h2 { color: var(--white); }
.inquiry .info p { color: #C9D8D2; font-size: 15px; margin-top: 16px; }
.inquiry .info a { color: #E8C87A; }
.contact-list { list-style: none; margin-top: 28px; display: grid; gap: 16px; }
.contact-list li { display: flex; gap: 14px; align-items: flex-start; font-size: 15px; color: #DCE7E2; }
.contact-list b { display: block; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: #9DB8AF; margin-bottom: 2px; }

.form-card { background: var(--white); color: var(--ink); border-radius: var(--radius); padding: 34px; box-shadow: 0 30px 70px rgba(0,0,0,.3); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 600; color: var(--green-deep); }
.field label span { color: #B0533A; }
.field input, .field select, .field textarea {
  border: 1.5px solid var(--line); border-radius: 10px; padding: 12px 14px;
  font-size: 14.5px; font-family: inherit; background: #FBFAF7; color: var(--ink);
  transition: border-color .15s; width: 100%;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--green); }
.form-note { grid-column: 1 / -1; font-size: 12.5px; color: var(--muted); }
.form-status { grid-column: 1 / -1; font-size: 14px; border-radius: 10px; padding: 12px 16px; display: none; }
.form-status.ok { display: block; background: #E8F3EC; color: #1E5C39; border: 1px solid #BFE0CC; }
.form-status.err { display: block; background: #F9EAE6; color: #9A3B26; border: 1px solid #EBC4B8; }

/* ---------- Footer ---------- */
.site-footer { background: var(--cream-2); border-top: 1px solid var(--line); padding: 40px 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; font-size: 13.5px; color: var(--muted); }
.footer-inner b { color: var(--green-deep); }

/* ---------- Products page ---------- */
.page-hero { background: var(--green-deep); color: var(--white); padding: 64px 0; }
.page-hero h1 { font-size: clamp(28px, 3.6vw, 44px); }
.page-hero p { color: #C9D8D2; margin-top: 12px; max-width: 640px; }

.product-block { display: grid; grid-template-columns: .95fr 1.05fr; gap: 44px; align-items: start; padding: 64px 0; border-bottom: 1px solid var(--line); }
.product-block:last-of-type { border-bottom: none; }
.product-block .ph-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); position: sticky; top: 96px; }
.product-block .ref { font-size: 12px; font-weight: 700; letter-spacing: .16em; color: var(--green-2); margin-bottom: 8px; }
.product-block h2 { margin-bottom: 14px; }
.product-block .desc { color: var(--muted); margin-bottom: 22px; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; background: var(--white); border-radius: 10px; overflow: hidden; box-shadow: var(--shadow); }
.spec-table th, .spec-table td { text-align: left; padding: 10px 16px; border-bottom: 1px solid var(--cream-2); }
.spec-table th { width: 38%; background: rgba(29,74,66,.06); color: var(--green-deep); font-weight: 600; }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: none; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag { font-size: 12.5px; font-weight: 600; color: var(--green); background: rgba(29,74,66,.08); border: 1px solid rgba(29,74,66,.18); border-radius: 999px; padding: 5px 14px; }
.app-list { margin: 16px 0 0 18px; color: var(--muted); font-size: 14.5px; }
.app-list li { margin-bottom: 6px; }

.brochure-band { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 38px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; box-shadow: var(--shadow); }
.brochure-band h3 { color: var(--green-deep); font-size: 20px; }
.brochure-band p { color: var(--muted); font-size: 14.5px; margin-top: 6px; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-inner, .inquiry .wrap, .product-block { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .hero-img { order: -1; }
  .product-block .ph-img { position: static; }
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: var(--cream); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: flex-start; padding: 18px 24px; gap: 16px;
  }
  .nav-links.open { display: flex; }
  .menu-toggle { display: block; }
  .nav-cta .btn-outline-hide { display: none; }
}
@media (max-width: 640px) {
  .grid-3, .grid-2, .form-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr 1fr 1fr; }
  section { padding: 60px 0; }
  .form-card { padding: 24px; }
}