/* 游友通官网 - 共用样式 */
:root {
  --green: #0E7A55;
  --green-dark: #0A5C40;
  --green-light: #E7F4EE;
  --accent: #F5A623;
  --ink: #1A2420;
  --gray: #5C6B64;
  --line: #E3EAE6;
  --bg: #F7FAF8;
  --white: #FFFFFF;
  --shadow: 0 10px 40px rgba(14, 90, 60, .08);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  color: var(--ink); background: var(--white); line-height: 1.7; font-size: 16px;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { width: min(1180px, 92%); margin: 0 auto; }

/* ===== 顶部导航 ===== */
.header {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.94);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line);
}
.header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 44px; height: 44px; border-radius: 50%; }
.brand .cn { font-size: 20px; font-weight: bold; letter-spacing: 1px; color: var(--green-dark); }
.brand .en { font-size: 11px; color: var(--gray); letter-spacing: 2px; }
.nav { display: flex; gap: 36px; }
.nav a { font-size: 15px; color: var(--ink); padding: 6px 0; position: relative; }
.nav a:hover, .nav a.on { color: var(--green); font-weight: bold; }
.nav a.on::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 3px; border-radius: 3px; background: var(--green);
}
.btn {
  display: inline-block; background: var(--green); color: #fff; font-size: 15px;
  padding: 12px 30px; border-radius: 8px; transition: .25s; border: none; cursor: pointer;
}
.btn:hover { background: var(--green-dark); transform: translateY(-2px); }
.btn.ghost { background: transparent; color: var(--green); border: 1.5px solid var(--green); }
.btn.ghost:hover { background: var(--green-light); }

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 560px; display: flex; align-items: center;
  background: url("../img/hero_lake.png") center/cover no-repeat;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(6,44,30,.82) 0%, rgba(6,44,30,.45) 55%, rgba(6,44,30,.15) 100%);
}
.hero .wrap { position: relative; z-index: 1; color: #fff; padding: 90px 0; }
.hero .tag {
  display: inline-block; font-size: 14px; letter-spacing: 3px; padding: 8px 20px;
  border: 1px solid rgba(255,255,255,.45); border-radius: 30px; margin-bottom: 28px;
  background: rgba(255,255,255,.08);
}
.hero h1 { font-size: 46px; letter-spacing: 3px; line-height: 1.35; }
.hero h1 span { color: #8FE3C0; }
.hero p { font-size: 18px; margin-top: 20px; max-width: 620px; color: #DCEDE4; }
.hero .actions { margin-top: 40px; display: flex; gap: 18px; }
.hero .btn { font-size: 16px; padding: 14px 38px; }
.hero .btn.light { background: #fff; color: var(--green-dark); }
.hero .btn.light:hover { background: var(--green-light); }

/* ===== 数据条 ===== */
.stats { background: var(--green-dark); color: #fff; padding: 34px 0; }
.stats .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 20px; text-align: center; }
.stats b { font-size: 34px; display: block; }
.stats b i { font-style: normal; font-size: 16px; margin-left: 4px; }
.stats span { font-size: 14px; color: #BFE0D1; }

/* ===== 通用 Section ===== */
section.sec { padding: 84px 0; }
section.sec.alt { background: var(--bg); }
.sec-head { text-align: center; margin-bottom: 56px; }
.sec-head .en {
  font-size: 12px; letter-spacing: 5px; color: var(--green); font-weight: bold;
  text-transform: uppercase; display: block; margin-bottom: 10px;
}
.sec-head h2 { font-size: 32px; letter-spacing: 2px; color: var(--ink); }
.sec-head p { color: var(--gray); margin-top: 14px; font-size: 15px; }
.sec-head .bar { width: 52px; height: 4px; background: var(--accent); margin: 18px auto 0; border-radius: 2px; }

/* ===== 卡片 ===== */
.cards3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.cards4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 34px 28px; transition: .28s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.card .ico {
  width: 56px; height: 56px; border-radius: 14px; background: var(--green-light);
  display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 22px;
}
.card h3 { font-size: 19px; margin-bottom: 12px; }
.card p { font-size: 14.5px; color: var(--gray); }
.card .more { display: inline-block; margin-top: 16px; color: var(--green); font-size: 14px; font-weight: bold; }

/* 图文混排 */
.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
.split img { border-radius: 16px; box-shadow: var(--shadow); }
.split h3 { font-size: 26px; margin-bottom: 20px; }
.split p { color: var(--gray); margin-bottom: 14px; font-size: 15px; }
.split ul { list-style: none; margin-top: 10px; }
.split ul li { padding: 8px 0 8px 30px; position: relative; color: var(--ink); font-size: 15px; }
.split ul li::before {
  content: "✓"; position: absolute; left: 0; top: 8px; width: 20px; height: 20px;
  background: var(--green-light); color: var(--green); border-radius: 50%;
  font-size: 12px; display: flex; align-items: center; justify-content: center; font-weight: bold;
}

/* 优势数字块 */
.adv { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.adv .item { text-align: center; padding: 36px 18px; background: #fff; border-radius: 14px; border: 1px solid var(--line); }
.adv .num { font-size: 40px; font-weight: bold; color: var(--green); }
.adv .num i { font-style: normal; font-size: 18px; }
.adv h4 { margin-top: 10px; font-size: 17px; }
.adv p { font-size: 13.5px; color: var(--gray); margin-top: 6px; }

/* 时间线 */
.timeline { position: relative; max-width: 780px; margin: 0 auto; padding-left: 34px; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px;
  width: 2px; background: var(--line);
}
.timeline .node { position: relative; padding-bottom: 36px; }
.timeline .node::before {
  content: ""; position: absolute; left: -33px; top: 7px; width: 16px; height: 16px;
  border-radius: 50%; background: #fff; border: 4px solid var(--green);
}
.timeline b { color: var(--green); font-size: 17px; }
.timeline p { color: var(--gray); font-size: 14.5px; margin-top: 6px; }

/* 资质徽章 */
.badges { display: flex; flex-wrap: wrap; gap: 18px; justify-content: center; }
.badge {
  display: flex; align-items: center; gap: 12px; background: #fff;
  border: 1px solid var(--line); border-radius: 12px; padding: 18px 26px;
}
.badge .ic { font-size: 24px; }
.badge div b { display: block; font-size: 15px; }
.badge div span { font-size: 12.5px; color: var(--gray); }

/* CTA 横条 */
.cta {
  background: linear-gradient(120deg, var(--green-dark), var(--green));
  color: #fff; border-radius: 20px; padding: 56px 60px;
  display: flex; align-items: center; justify-content: space-between; gap: 30px;
}
.cta h3 { font-size: 26px; letter-spacing: 1px; }
.cta p { color: #CBE8DA; margin-top: 8px; font-size: 15px; }
.cta .btn { background: #fff; color: var(--green-dark); white-space: nowrap; }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.info-row { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px dashed var(--line); }
.info-row .ic {
  width: 46px; height: 46px; border-radius: 12px; background: var(--green-light);
  display: flex; align-items: center; justify-content: center; font-size: 20px; flex-shrink: 0;
}
.info-row b { display: block; font-size: 15px; }
.info-row p { color: var(--gray); font-size: 14.5px; margin-top: 4px; }
.form { background: var(--bg); border-radius: 16px; padding: 36px; }
.form h3 { margin-bottom: 22px; }
.form input, .form textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 8px;
  padding: 13px 16px; font-size: 14.5px; margin-bottom: 16px; font-family: inherit;
  background: #fff; outline: none;
}
.form input:focus, .form textarea:focus { border-color: var(--green); }
.form textarea { height: 110px; resize: vertical; }

/* 页脚 */
.footer { background: #0B1F17; color: #9DB5A9; padding: 64px 0 0; }
.footer .cols { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.footer a { display: block; font-size: 14px; padding: 5px 0; color: #9DB5A9; }
.footer a:hover { color: #fff; }
.footer .desc { font-size: 13.5px; line-height: 1.9; margin-top: 14px; }
.footer .wx { display: flex; align-items: center; gap: 10px; margin-top: 16px; color: #8FE3C0; font-size: 14px; }
.footer .bottom {
  border-top: 1px solid rgba(255,255,255,.08); padding: 20px 0;
  font-size: 12.5px; color: #6B8578; text-align: center;
}

/* 页头（内页） */
.page-hero {
  background: linear-gradient(rgba(6,44,30,.72), rgba(6,44,30,.72)), url("../img/huai_river.png") center/cover;
  padding: 90px 0; color: #fff; text-align: center;
}
.page-hero h1 { font-size: 36px; letter-spacing: 3px; }
.page-hero p { margin-top: 12px; color: #CBE8DA; letter-spacing: 1px; }

/* 响应式 */
@media (max-width: 900px) {
  .nav { display: none; }
  .hero h1 { font-size: 32px; }
  .cards3, .cards4, .adv { grid-template-columns: repeat(2, 1fr); }
  .split, .contact-grid { grid-template-columns: 1fr; }
  .footer .cols { grid-template-columns: 1fr 1fr; }
  .cta { flex-direction: column; text-align: center; }
}
@media (max-width: 560px) {
  .cards3, .cards4, .adv { grid-template-columns: 1fr; }
  .footer .cols { grid-template-columns: 1fr; }
}