/* ============================================================
   环球旅程 · 高端旅游网站样式
   ============================================================ */

:root {
  --navy: #0a1622;
  --navy-2: #0f2033;
  --navy-3: #16293f;
  --gold: #c9a961;
  --gold-2: #e2c88a;
  --white: #ffffff;
  --gray-1: #f5f7fa;
  --gray-2: #e6ebf2;
  --gray-3: #8a97a8;
  --text: #22303f;
  --text-2: #5a6a7a;
  --shadow: 0 18px 50px rgba(10, 22, 34, .12);
  --shadow-sm: 0 8px 24px rgba(10, 22, 34, .08);
  --radius: 14px;
  --radius-sm: 8px;
  --container: 1200px;
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s ease, background .25s ease, border-color .25s ease, transform .25s ease; }
ul { list-style: none; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--gold); color: var(--navy);
  padding: 10px 18px; z-index: 999; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 15px 38px;
  font-size: 15px; font-weight: 600; letter-spacing: .5px;
  border-radius: 999px; border: 1.5px solid transparent;
  cursor: pointer; white-space: nowrap;
  transition: all .3s ease;
}
.btn-gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-2));
  color: var(--navy); box-shadow: 0 10px 28px rgba(201, 169, 97, .35);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(201, 169, 97, .45); }
.btn-line {
  background: transparent; color: var(--white);
  border-color: rgba(255, 255, 255, .55);
}
.btn-line:hover { background: rgba(255, 255, 255, .12); border-color: var(--white); }
.btn-dark {
  background: var(--navy); color: var(--white);
  box-shadow: 0 10px 26px rgba(10, 22, 34, .22);
}
.btn-dark:hover { background: var(--navy-3); transform: translateY(-2px); }
.btn-sm { padding: 11px 26px; font-size: 14px; }

/* ---------- 顶部信息条 ---------- */
.topbar {
  background: var(--navy); color: rgba(255, 255, 255, .8);
  font-size: 13px; border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.topbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 42px; gap: 18px; flex-wrap: wrap;
}
.topbar-tip { letter-spacing: .3px; }
.topbar-list { display: flex; gap: 22px; flex-wrap: wrap; }
.topbar-list a { color: var(--gold-2); }
.topbar-list a:hover { color: var(--white); }

/* ---------- 导航栏 ---------- */
.site-header { position: sticky; top: 0; z-index: 100; }

.nav-bar {
  background: rgba(10, 22, 34, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, .07);
  transition: background .3s ease, box-shadow .3s ease;
}
.site-header.scrolled .nav-bar {
  background: rgba(10, 22, 34, .98);
  box-shadow: 0 8px 30px rgba(0, 0, 0, .28);
}

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 76px; gap: 24px;
}

.logo { display: flex; align-items: center; gap: 12px; }
.logo img { width: 56px; height: 56px; object-fit: contain; }
.logo-txt { display: flex; flex-direction: column; line-height: 1.15; }
.logo-txt strong { color: var(--white); font-size: 19px; letter-spacing: 2px; }
.logo-txt em {
  font-style: normal; font-size: 10px; letter-spacing: 3px;
  color: var(--gold); text-transform: uppercase;
}
.logo-footer .logo-txt strong { color: var(--white); }

.nav ul { display: flex; align-items: center; gap: 6px; }
.nav a {
  display: block; padding: 10px 18px; border-radius: 999px;
  color: rgba(255, 255, 255, .82); font-size: 15px; font-weight: 500;
  position: relative;
}
.nav a:hover, .nav a.active { color: var(--white); background: rgba(255, 255, 255, .08); }
.nav a.active::after {
  content: ""; position: absolute; left: 50%; bottom: 4px;
  width: 20px; height: 2px; background: var(--gold);
  transform: translateX(-50%); border-radius: 2px;
}

.nav-cta { margin-left: 8px; }

.nav-toggle {
  display: none; background: transparent; border: 1px solid rgba(255, 255, 255, .4);
  color: var(--white); font-size: 20px; width: 42px; height: 42px;
  border-radius: 10px; cursor: pointer; line-height: 1;
}

/* ---------- 首页横幅 ---------- */
.hero {
  position: relative; min-height: 92vh; display: flex; align-items: center;
  overflow: hidden; background: var(--navy);
}
.hero-bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: center;
}
.hero-mask {
  position: absolute; inset: 0;
  background: linear-gradient(
    120deg,
    rgba(10, 22, 34, .92) 0%,
    rgba(10, 22, 34, .72) 45%,
    rgba(10, 22, 34, .35) 100%
  );
}
.hero-content {
  position: relative; z-index: 2; text-align: center;
  padding: 120px 24px 100px; color: var(--white);
}
.hero-eyebrow {
  font-size: 13px; letter-spacing: 4px; color: var(--gold);
  text-transform: uppercase; margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(32px, 5vw, 60px); font-weight: 800;
  letter-spacing: 2px; margin-bottom: 22px;
  text-shadow: 0 4px 30px rgba(0, 0, 0, .4);
}
.hero-sub {
  max-width: 720px; margin: 0 auto 40px;
  font-size: clamp(15px, 1.6vw, 18px);
  color: rgba(255, 255, 255, .82); line-height: 1.9;
}
.hero-btns {
  display: flex; align-items: center; justify-content: center;
  gap: 18px; flex-wrap: wrap; margin-bottom: 42px;
}
.hero-tags {
  display: flex; justify-content: center; gap: 12px; flex-wrap: wrap;
}
.hero-tags li {
  font-size: 13px; padding: 7px 18px; border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, .28);
  color: rgba(255, 255, 255, .88);
  background: rgba(255, 255, 255, .05);
  backdrop-filter: blur(4px);
}

/* ---------- 通用区块 ---------- */
.section { padding: 100px 0; }
.section-alt { background: var(--gray-1); }

.sec-eyebrow {
  font-size: 12px; letter-spacing: 3.5px; color: var(--gold);
  text-transform: uppercase; font-weight: 700; margin-bottom: 12px;
}
.sec-title {
  font-size: clamp(26px, 3.2vw, 40px); color: var(--navy);
  letter-spacing: 1px; margin-bottom: 14px;
}
.sec-desc { color: var(--text-2); max-width: 620px; font-size: 16px; }
.sec-head { text-align: center; margin-bottom: 56px; }
.sec-head .sec-desc { margin: 0 auto; }

/* ---------- 公司简介 ---------- */
.about-grid {
  display: grid; grid-template-columns: 1.05fr .95fr;
  gap: 70px; align-items: center;
}
.about-lead { font-size: 18px; color: var(--navy-2); margin: 18px 0 16px; }
.about-text > p { color: var(--text-2); margin-bottom: 16px; }
.about-text strong { color: var(--navy); }

.about-points { margin: 26px 0 30px; display: grid; gap: 12px; }
.about-points li {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 18px; background: var(--gray-1);
  border-radius: var(--radius-sm); font-size: 15px; color: var(--navy-2);
  border-left: 3px solid var(--gold);
}
.about-points span {
  font-size: 13px; font-weight: 800; color: var(--gold);
  letter-spacing: 1px; min-width: 26px;
}

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 16px; margin-bottom: 34px;
}
.stats li {
  text-align: center; padding: 18px 8px;
  background: var(--white); border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm); border: 1px solid var(--gray-2);
}
.stats strong {
  display: block; font-size: 28px; color: var(--navy);
  letter-spacing: -.5px; line-height: 1.2;
}
.stats em { font-style: normal; font-size: 15px; color: var(--gold); margin-left: 2px; }
.stats span { font-size: 13px; color: var(--text-2); }

.about-media { position: relative; }
.about-media img {
  width: 100%; border-radius: var(--radius);
  box-shadow: var(--shadow); object-fit: cover;
}
.about-badge {
  position: absolute; left: -22px; bottom: 38px;
  background: var(--navy); color: var(--white);
  padding: 18px 26px; border-radius: var(--radius-sm);
  box-shadow: var(--shadow); text-align: center;
  border-left: 4px solid var(--gold);
}
.about-badge strong { display: block; font-size: 26px; color: var(--gold-2); }
.about-badge span { font-size: 12px; letter-spacing: 2px; color: rgba(255, 255, 255, .7); }

/* ---------- 公司新闻 ---------- */
.news-banner {
  position: relative; border-radius: var(--radius); overflow: hidden;
  margin-bottom: 50px; box-shadow: var(--shadow);
}
.news-banner img { width: 100%; height: 400px; object-fit: cover; }
.news-banner figcaption {
  position: absolute; inset: auto 0 0 0;
  padding: 50px 40px 34px; color: var(--white);
  background: linear-gradient(to top, rgba(10, 22, 34, .94), transparent);
}
.nb-tag {
  display: inline-block; font-size: 12px; letter-spacing: 2px;
  background: var(--gold); color: var(--navy);
  padding: 5px 14px; border-radius: 999px; margin-bottom: 14px;
  font-weight: 700;
}
.news-banner h3 { font-size: clamp(20px, 2.4vw, 30px); margin-bottom: 10px; }
.news-banner p { color: rgba(255, 255, 255, .82); max-width: 720px; }

.news-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px;
}
.news-card {
  background: var(--white); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); border: 1px solid var(--gray-2);
  transition: transform .3s ease, box-shadow .3s ease;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.news-thumb { display: block; overflow: hidden; }
.news-thumb img {
  width: 100%; height: 220px; object-fit: cover;
  transition: transform .5s ease;
}
.news-card:hover .news-thumb img { transform: scale(1.06); }
.news-body { padding: 24px 24px 28px; }
.news-meta {
  font-size: 13px; color: var(--gray-3); margin-bottom: 10px;
  display: flex; align-items: center; gap: 8px;
}
.news-meta span { color: var(--gold); }
.news-body h3 { font-size: 18px; margin-bottom: 10px; color: var(--navy); }
.news-body h3 a:hover { color: var(--gold); }
.news-body p { font-size: 14px; color: var(--text-2); margin-bottom: 16px; }
.news-more { font-size: 14px; font-weight: 600; color: var(--gold); }
.news-more:hover { color: var(--navy); }

/* ---------- 服务优势 ---------- */
.service-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px;
}
.service-grid li {
  background: var(--white); border: 1px solid var(--gray-2);
  border-radius: var(--radius); padding: 38px 26px;
  text-align: center; box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease;
}
.service-grid li:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.service-grid .ico {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px; border-radius: 50%;
  background: linear-gradient(135deg, var(--gold), var(--gold-2));
  color: var(--navy); font-size: 22px; margin-bottom: 18px;
  box-shadow: 0 8px 22px rgba(201, 169, 97, .35);
}
.service-grid h3 { font-size: 18px; color: var(--navy); margin-bottom: 10px; }
.service-grid p { font-size: 14px; color: var(--text-2); }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy); color: rgba(255, 255, 255, .78); }

.footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.1fr;
  gap: 46px; padding: 76px 24px 56px;
}
.footer-brand p { font-size: 14px; margin-top: 16px; color: rgba(255, 255, 255, .62); }
.footer-contact { line-height: 2; }
.footer-contact a { color: var(--gold-2); }
.footer-contact a:hover { color: var(--white); }

.footer-col h3 {
  font-size: 16px; color: var(--white); margin-bottom: 20px;
  padding-bottom: 12px; position: relative;
}
.footer-col h3::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 30px; height: 2px; background: var(--gold);
}
.footer-col ul { display: grid; gap: 10px; }
.footer-col ul a { font-size: 14px; color: rgba(255, 255, 255, .68); }
.footer-col ul a:hover { color: var(--gold-2); padding-left: 4px; }
.footer-col .btn { margin-top: 20px; }

.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); }
.footer-bottom-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 18px; flex-wrap: wrap; padding: 22px 24px;
  font-size: 13px; color: rgba(255, 255, 255, .5);
}
.beian a { color: rgba(255, 255, 255, .6); }
.beian a:hover { color: var(--gold-2); }
.beian .sep { margin: 0 10px; color: rgba(255, 255, 255, .25); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 46px; }
  .about-media { max-width: 620px; margin: 0 auto; }
  .about-badge { left: 0; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 36px; }
}

@media (max-width: 768px) {
  .section { padding: 70px 0; }

  .topbar-inner { justify-content: center; text-align: center; }
  .topbar-list { justify-content: center; gap: 14px; }

  .nav-toggle { display: block; }
  .nav {
    position: absolute; left: 0; right: 0; top: 100%;
    background: rgba(10, 22, 34, .98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    max-height: 0; overflow: hidden;
    transition: max-height .35s ease;
  }
  .nav.open { max-height: 420px; }
  .nav ul { flex-direction: column; align-items: stretch; padding: 14px 20px 24px; gap: 4px; }
  .nav a { padding: 14px 18px; border-radius: var(--radius-sm); }
  .nav a.active::after { display: none; }
  .nav-cta { display: none; }

  .hero { min-height: 86vh; }
  .hero-content { padding: 100px 20px 80px; }
  .hero-btns { gap: 12px; }
  .hero-btns .btn { padding: 13px 26px; font-size: 14px; }

  .stats { grid-template-columns: repeat(2, 1fr); }

  .news-banner img { height: 300px; }
  .news-banner figcaption { padding: 36px 24px 24px; }
  .news-grid { grid-template-columns: 1fr; }

  .service-grid { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; padding: 56px 24px 40px; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 420px) {
  .hero-btns { flex-direction: column; width: 100%; }
  .hero-btns .btn { width: 100%; }
  .stats { grid-template-columns: 1fr 1fr; }
}