/* 广州市垠禹贸易有限公司 — 官网样式 */

:root {
  --brand: #0f5f50;
  --brand-2: #14806b;
  --brand-soft: #e6f2ef;
  --accent: #d99518;
  --ink: #14181c;
  --ink-2: #4d5860;
  --line: #e3e7ea;
  --bg: #ffffff;
  --bg-2: #f6f8f8;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(15, 30, 25, .05), 0 10px 30px rgba(15, 30, 25, .06);
  --wrap: 1180px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #2ec6a6;
    --brand-2: #3fd8b7;
    --brand-soft: #10302a;
    --accent: #eab24a;
    --ink: #e9edf0;
    --ink-2: #9aa6ae;
    --line: #262d33;
    --bg: #12161a;
    --bg-2: #171c21;
    --shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 12px 32px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.wrap { width: min(100% - 40px, var(--wrap)); margin-inline: auto; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--brand); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }

/* ---------------- Nav ---------------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, box-shadow .25s;
}
.nav.stuck { border-bottom-color: var(--line); box-shadow: 0 4px 20px rgba(15, 30, 25, .05); }

.nav-inner { display: flex; align-items: center; gap: 24px; height: 72px; }

.brand { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand .mark { color: var(--brand); display: flex; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text b { font-size: 15px; letter-spacing: -.01em; }
.brand-text i {
  font-style: normal; font-size: 11px; color: var(--ink-2);
  letter-spacing: .04em; text-transform: uppercase;
}

.links { display: flex; gap: 4px; margin-left: auto; }
.links a {
  padding: 8px 14px; border-radius: 999px; font-size: 14.5px; color: var(--ink-2);
  transition: background .2s, color .2s;
}
.links a:hover { background: var(--brand-soft); color: var(--brand); }

.nav-actions { display: flex; align-items: center; gap: 8px; }

.lang {
  font: inherit; font-size: 13px; font-weight: 600; letter-spacing: .06em;
  background: transparent; color: var(--ink-2);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px; cursor: pointer; transition: all .2s;
}
.lang:hover { border-color: var(--brand); color: var(--brand); }

.burger { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.burger span {
  display: block; width: 22px; height: 2px; background: var(--ink);
  border-radius: 2px; transition: transform .25s, opacity .2s;
}
.burger span + span { margin-top: 5px; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------------- Hero ---------------- */
.hero { position: relative; padding: 92px 0 0; overflow: hidden; }
.hero-bg {
  position: absolute; inset: -20% -10% auto -10%; height: 520px; z-index: -1;
  background:
    radial-gradient(60% 70% at 22% 22%, color-mix(in srgb, var(--brand) 16%, transparent), transparent 70%),
    radial-gradient(45% 60% at 88% 8%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%);
}

.eyebrow {
  margin: 0 0 18px; font-size: 13px; font-weight: 600; letter-spacing: .16em;
  text-transform: uppercase; color: var(--brand);
}

.hero h1 {
  margin: 0 0 22px;
  font-size: clamp(34px, 6.2vw, 62px);
  line-height: 1.14; letter-spacing: -.03em; font-weight: 800;
}
.hero h1 .accent {
  background: linear-gradient(100deg, var(--brand), var(--brand-2) 55%, var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.lede { margin: 0 0 32px; max-width: 62ch; font-size: clamp(16px, 1.7vw, 18.5px); color: var(--ink-2); }

.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 26px; border-radius: 999px; font-weight: 600; font-size: 15px;
  transition: transform .18s, box-shadow .18s, background .2s, border-color .2s;
}
.btn.primary { background: var(--brand); color: #fff; box-shadow: 0 6px 20px color-mix(in srgb, var(--brand) 30%, transparent); }
.btn.primary:hover { transform: translateY(-2px); box-shadow: 0 10px 28px color-mix(in srgb, var(--brand) 38%, transparent); }
.btn.ghost { border: 1px solid var(--line); color: var(--ink); }
.btn.ghost:hover { border-color: var(--brand); color: var(--brand); }

.facts {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  margin: 76px 0 0; padding: 0; list-style: none;
  background: var(--line); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
}
.facts li { background: var(--bg); padding: 24px 22px; }
.facts b {
  display: block; font-size: clamp(22px, 2.6vw, 30px); font-weight: 800;
  letter-spacing: -.02em; color: var(--brand); line-height: 1.2;
}
.facts span { font-size: 13.5px; color: var(--ink-2); }

/* ---------------- Sections ---------------- */
.section { padding: 96px 0; }
.section.alt { background: var(--bg-2); }

.tag {
  margin: 0 0 10px; font-size: 12.5px; font-weight: 700; letter-spacing: .16em;
  text-transform: uppercase; color: var(--accent);
}
h2 {
  margin: 0 0 18px; font-size: clamp(25px, 3.4vw, 38px);
  line-height: 1.22; letter-spacing: -.02em; font-weight: 750;
}
.sub { color: var(--ink-2); margin: 0; max-width: 60ch; }

.head { margin-bottom: 48px; max-width: 720px; }

.grid-2 { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: start; }
.grid-2 p { color: var(--ink-2); }

.profile { margin: 32px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid var(--line); }
.profile > div { padding: 14px 0; border-bottom: 1px solid var(--line); }
.profile dt { font-size: 12.5px; color: var(--ink-2); letter-spacing: .02em; }
.profile dd { margin: 2px 0 0; font-size: 14.5px; font-weight: 550; }

.media img { border-radius: var(--radius); box-shadow: var(--shadow); }
.cap { margin: 14px 2px 0; font-size: 13px; color: var(--ink-2); }

/* ---------------- Cards ---------------- */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; transition: transform .22s, box-shadow .22s, border-color .22s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--brand) 35%, var(--line)); }
.ico {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 12px;
  background: var(--brand-soft); color: var(--brand); margin-bottom: 18px;
}
.card h3 { margin: 0 0 10px; font-size: 18px; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* ---------------- Why ---------------- */
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 44px 56px; }
.why b {
  display: block; font-size: 13px; font-weight: 800; letter-spacing: .1em;
  color: var(--accent); margin-bottom: 10px;
}
.why h3 { margin: 0 0 10px; font-size: 19px; letter-spacing: -.01em; }
.why p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* ---------------- Gallery ---------------- */
.gallery { display: grid; grid-template-columns: 1.35fr 1fr; grid-auto-rows: auto; gap: 20px; }
.gallery figure { margin: 0; }
.gallery img {
  width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius);
  box-shadow: var(--shadow); aspect-ratio: 4 / 3;
}
.gallery .g-tall { grid-row: span 2; }
.gallery .g-tall img { aspect-ratio: 4 / 5; }
.gallery figcaption { margin-top: 12px; font-size: 13px; color: var(--ink-2); }

/* ---------------- Contact ---------------- */
.contact-box {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 20px; padding: 56px;
}
.section.alt + .section .contact-box { background: var(--bg-2); }
.contact-list { list-style: none; margin: 0; padding: 0; }
.contact-list li { display: grid; grid-template-columns: 96px 1fr; gap: 18px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.contact-list li:last-child { border-bottom: 0; }
.contact-list .k { font-size: 13px; color: var(--ink-2); }
.contact-list .v { font-size: 15px; font-weight: 550; }
.contact-list .v.placeholder { color: var(--ink-2); font-weight: 400; font-style: italic; }

/* ---------------- Footer ---------------- */
.foot { border-top: 1px solid var(--line); padding: 34px 0; background: var(--bg); }
.foot-inner { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.foot b { display: block; font-size: 14.5px; }
.foot span { font-size: 12.5px; color: var(--ink-2); }
.copy { margin: 0; font-size: 13px; color: var(--ink-2); }

/* ---------------- Reveal ---------------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card { transition: none; }
}

/* ---------------- Responsive ---------------- */
@media (max-width: 900px) {
  .links {
    position: fixed; inset: 72px 0 auto; flex-direction: column; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 8px 20px 20px; transform: translateY(-120%); transition: transform .28s ease;
    box-shadow: var(--shadow);
  }
  .links.open { transform: none; }
  .links a { padding: 13px 4px; border-radius: 0; font-size: 16px; }
  .burger { display: block; }
  .nav-actions { margin-left: auto; }

  .hero { padding-top: 64px; }
  .facts { grid-template-columns: repeat(2, 1fr); margin-top: 56px; }
  .section { padding: 72px 0; }
  .grid-2 { grid-template-columns: 1fr; gap: 40px; }
  .cards, .why-grid { grid-template-columns: 1fr; }
  .why-grid { gap: 34px; }
  .gallery { grid-template-columns: 1fr; }
  .gallery .g-tall { grid-row: auto; }
  .gallery .g-tall img { aspect-ratio: 4 / 3; }
  .contact-box { grid-template-columns: 1fr; gap: 36px; padding: 36px 26px; }
}

@media (max-width: 480px) {
  .brand-text b { font-size: 13.5px; }
  .brand-text i { font-size: 10px; }
  .profile { grid-template-columns: 1fr; }
  .contact-list li { grid-template-columns: 80px 1fr; gap: 12px; }
}