/* ============================================================
   新疆兵青文旅 · 站点样式
   参照景区官方网站（九寨沟官网"旅游产品/科普"栏目）风格复刻
   ============================================================ */

:root {
  --primary: #0e7a8a;        /* 赛里木湖蓝 */
  --primary-dark: #0a5b66;
  --primary-deep: #084a53;
  --navy: #14324f;           /* 深蓝（顶部/页脚） */
  --gold: #c9a45c;           /* 沙漠金 */
  --gold-soft: #e8d9b8;
  --bg: #f4f8f9;
  --card: #ffffff;
  --text: #26343a;
  --muted: #6b7a80;
  --line: #e3eaec;
  --radius: 10px;
  --shadow: 0 4px 18px rgba(20, 50, 79, .08);
  --shadow-lg: 0 12px 34px rgba(20, 50, 79, .16);
  --font: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  --kaiti: "KaiTi", "STKaiti", "SimSun", serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 15px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container { width: min(1200px, 92%); margin: 0 auto; }

/* ---------- 顶部工具条 ---------- */
.topbar {
  background: var(--navy);
  color: #cfe0ea;
  font-size: 13px;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; height: 36px; }
.topbar .slogan b { color: var(--gold-soft); font-weight: 600; margin-right: 6px; }
.topbar .links { display: flex; gap: 18px; align-items: center; }
.topbar .links a:hover { color: #fff; }
.topbar .hotline { color: var(--gold-soft); }
.topbar .hotline b { color: #ffd98a; font-size: 15px; letter-spacing: .5px; }

/* ---------- 头部 ---------- */
.header {
  background: #fff;
  box-shadow: 0 1px 0 var(--line);
  position: sticky;
  top: 0;
  z-index: 200;
}
.header .main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand .logo { width: 54px; height: 54px; flex: none; }
.brand .titles h1 {
  font-size: 26px;
  letter-spacing: 3px;
  color: var(--primary-deep);
  font-weight: 700;
}
.brand .titles h1 span { color: var(--gold); }
.brand .titles .en {
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--muted);
  text-transform: uppercase;
}
.header-tools { display: flex; align-items: center; gap: 14px; }
.header-tools .qr { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
.header-tools .qr svg { width: 30px; height: 30px; color: var(--primary); }
.btn-phone {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 10px 20px;
  border-radius: 24px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 1px;
  box-shadow: 0 4px 12px rgba(14, 122, 138, .35);
  transition: transform .2s, box-shadow .2s;
}
.btn-phone:hover { transform: translateY(-2px); box-shadow: 0 8px 18px rgba(14, 122, 138, .45); }
.btn-phone small { display: block; font-size: 11px; font-weight: 400; opacity: .9; }

/* ---------- 导航 ---------- */
.nav {
  background: linear-gradient(90deg, var(--primary-deep), var(--primary-dark) 55%, var(--primary));
}
.nav .container { position: relative; }
.nav ul { display: flex; }
.nav > ul > li { position: relative; }
.nav > ul > li > a {
  display: block;
  color: #eaf6f8;
  padding: 14px 26px;
  font-size: 16px;
  letter-spacing: 1px;
  position: relative;
  transition: background .2s;
}
.nav > ul > li > a:hover,
.nav > ul > li.active > a { background: rgba(255, 255, 255, .12); }
.nav > ul > li.active > a::after {
  content: "";
  position: absolute;
  left: 26px; right: 26px; bottom: 4px;
  height: 3px;
  background: var(--gold);
  border-radius: 2px;
}
.nav .drop {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 168px;
  background: #fff;
  box-shadow: var(--shadow-lg);
  border-radius: 0 0 8px 8px;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all .22s ease;
  z-index: 300;
}
.nav li:hover .drop { opacity: 1; visibility: visible; transform: translateY(0); }
.nav .drop a {
  display: block;
  padding: 11px 20px;
  color: var(--text);
  font-size: 14.5px;
  border-bottom: 1px dashed var(--line);
  transition: all .18s;
}
.nav .drop a:last-child { border-bottom: none; }
.nav .drop a:hover { background: #eef7f8; color: var(--primary-dark); padding-left: 26px; }
.nav-toggle { display: none; color: #fff; font-size: 26px; padding: 8px 12px; }

/* ---------- 轮播 ---------- */
.hero { position: relative; overflow: hidden; background: var(--navy); }
.hero .slides { position: relative; height: 480px; }
.hero .slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
  z-index: 1;
}
.hero .slide.active { opacity: 1; z-index: 2; }
.hero .slide img { width: 100%; height: 100%; object-fit: cover; }
.hero .slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 32, 48, .15), rgba(10, 32, 48, .55) 78%);
}
.hero .cap {
  position: absolute;
  left: 50%;
  bottom: 76px;
  transform: translateX(-50%);
  z-index: 3;
  color: #fff;
  text-align: center;
  width: min(900px, 90%);
}
.hero .cap .kicker { font-family: var(--kaiti); font-size: 20px; letter-spacing: 6px; color: var(--gold-soft); margin-bottom: 8px; }
.hero .cap h2 { font-size: 46px; letter-spacing: 8px; font-weight: 700; text-shadow: 0 4px 18px rgba(0, 0, 0, .35); }
.hero .cap p { margin-top: 12px; font-size: 16px; letter-spacing: 2px; color: #e8f2f4; }
.hero .dots { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 4; display: flex; gap: 10px; }
.hero .dots span { width: 34px; height: 5px; border-radius: 3px; background: rgba(255, 255, 255, .45); cursor: pointer; transition: all .25s; }
.hero .dots span.on { background: var(--gold); width: 48px; }
.hero .arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 4;
  width: 46px; height: 72px;
  background: rgba(10, 32, 48, .25);
  color: #fff;
  font-size: 24px;
  display: flex; align-items: center; justify-content: center;
  transition: background .2s;
}
.hero .arrow:hover { background: rgba(10, 32, 48, .5); }
.hero .arrow.prev { left: 0; border-radius: 0 8px 8px 0; }
.hero .arrow.next { right: 0; border-radius: 8px 0 0 8px; }

/* ---------- 数据条 ---------- */
.stats { background: #fff; box-shadow: var(--shadow); }
.stats .container { display: flex; }
.stats .item { flex: 1; text-align: center; padding: 22px 10px; position: relative; }
.stats .item + .item::before { content: ""; position: absolute; left: 0; top: 22%; height: 56%; width: 1px; background: var(--line); }
.stats .num { font-size: 30px; font-weight: 700; color: var(--primary-dark); }
.stats .num em { font-style: normal; font-size: 15px; color: var(--gold); margin-left: 2px; }
.stats .lab { color: var(--muted); font-size: 13.5px; letter-spacing: 1px; }

/* ---------- 通用 section ---------- */
.section { padding: 62px 0; }
.section.alt { background: #fff; }
.sec-head { text-align: center; margin-bottom: 40px; }
.sec-head .kicker { font-family: var(--kaiti); color: var(--gold); letter-spacing: 5px; font-size: 17px; }
.sec-head h2 { font-size: 32px; letter-spacing: 4px; color: var(--primary-deep); margin: 6px 0 10px; }
.sec-head .bar { width: 64px; height: 3px; background: linear-gradient(90deg, var(--gold), var(--primary)); border-radius: 2px; margin: 0 auto; }
.sec-head p { color: var(--muted); margin-top: 12px; font-size: 14.5px; }
.more-link { text-align: center; margin-top: 34px; }
.btn-line {
  display: inline-block;
  border: 1px solid var(--primary);
  color: var(--primary-dark);
  padding: 10px 34px;
  border-radius: 26px;
  letter-spacing: 2px;
  font-size: 15px;
  transition: all .25s;
}
.btn-line:hover { background: var(--primary); color: #fff; box-shadow: 0 6px 16px rgba(14, 122, 138, .3); }

/* ---------- 产品卡片 ---------- */
.pgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.pcard {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .28s, box-shadow .28s;
  display: flex;
  flex-direction: column;
}
.pcard:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.pcard .ph { position: relative; overflow: hidden; aspect-ratio: 16 / 9.6; }
.pcard .ph img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.pcard:hover .ph img { transform: scale(1.06); }
.pcard .tags { position: absolute; left: 12px; top: 12px; display: flex; gap: 8px; }
.pcard .tag {
  padding: 3px 12px;
  border-radius: 14px;
  font-size: 12.5px;
  color: #fff;
  letter-spacing: 1px;
}
.pcard .tag.series { background: linear-gradient(135deg, var(--gold), #a97f36); }
.pcard .tag.days { background: rgba(20, 50, 79, .78); }
.pcard .body { padding: 18px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.pcard .body h3 { font-size: 19px; color: var(--primary-deep); letter-spacing: 1px; }
.pcard .body .line {
  color: var(--muted);
  font-size: 13.5px;
  margin: 8px 0 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.pcard .chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: auto; }
.pcard .chip {
  background: #eef6f7;
  color: var(--primary-dark);
  font-size: 12.5px;
  padding: 3px 11px;
  border-radius: 13px;
}
.pcard .foot { display: flex; justify-content: space-between; align-items: center; margin-top: 14px; padding-top: 13px; border-top: 1px dashed var(--line); }
.pcard .foot .price-hint { color: var(--gold); font-size: 13px; }
.pcard .foot a {
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
}
.pcard .foot a:hover { color: var(--primary-deep); }

/* ---------- 目的地卡片 ---------- */
.dest-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.dcard {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  box-shadow: var(--shadow);
  display: block;
}
.dcard img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s; }
.dcard:hover img { transform: scale(1.07); }
.dcard .veil {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10, 32, 48, .05) 35%, rgba(10, 32, 48, .82));
}
.dcard .txt { position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 24px; color: #fff; }
.dcard .txt h3 { font-size: 24px; letter-spacing: 4px; }
.dcard .txt .en { font-family: var(--kaiti); color: var(--gold-soft); font-size: 14px; letter-spacing: 2px; margin-top: 2px; }
.dcard .txt p { font-size: 13.5px; color: #d7e6ea; margin-top: 8px; }
.dcard .txt .go { display: inline-block; margin-top: 12px; border: 1px solid rgba(255, 255, 255, .7); padding: 5px 18px; border-radius: 18px; font-size: 13px; letter-spacing: 2px; transition: all .25s; }
.dcard:hover .txt .go { background: var(--gold); border-color: var(--gold); color: #fff; }

/* ---------- 优势 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.why-item { text-align: center; padding: 30px 18px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); transition: transform .25s; }
.why-item:hover { transform: translateY(-5px); }
.why-item .ico {
  width: 68px; height: 68px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, #e7f4f6, #d3eaee);
  color: var(--primary-dark);
  display: flex; align-items: center; justify-content: center;
}
.why-item .ico svg { width: 32px; height: 32px; }
.why-item h4 { font-size: 17px; color: var(--primary-deep); letter-spacing: 2px; }
.why-item p { color: var(--muted); font-size: 13.5px; margin-top: 8px; }

/* ---------- 科普卡片 ---------- */
.sci-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.scard {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .28s, box-shadow .28s;
  display: flex; flex-direction: column;
}
.scard:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.scard .ph { aspect-ratio: 16 / 9.4; overflow: hidden; }
.scard .ph img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.scard:hover .ph img { transform: scale(1.06); }
.scard .body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
.scard .cat { color: var(--gold); font-size: 12.5px; letter-spacing: 2px; }
.scard h4 { font-size: 17px; color: var(--primary-deep); margin: 6px 0 8px; letter-spacing: .5px; }
.scard p { color: var(--muted); font-size: 13.5px; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.scard .more { margin-top: 12px; color: var(--primary); font-size: 13.5px; }

/* ---------- 视频 ---------- */
.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.vcard { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.vcard video { width: 100%; aspect-ratio: 16/9; background: #0a1c28; object-fit: cover; }
.vcard .body { padding: 13px 16px 16px; }
.vcard .body h4 { font-size: 15.5px; color: var(--primary-deep); }
.vcard .body p { font-size: 12.5px; color: var(--muted); margin-top: 3px; }

/* ---------- CTA ---------- */
.cta {
  background: linear-gradient(120deg, var(--navy), var(--primary-deep));
  color: #fff;
  text-align: center;
  padding: 58px 0;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: "疆";
  position: absolute;
  right: 6%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--kaiti);
  font-size: 200px;
  color: rgba(255, 255, 255, .05);
}
.cta h2 { font-size: 30px; letter-spacing: 5px; }
.cta p { color: #cfe0ea; margin: 10px 0 24px; letter-spacing: 1px; }
.cta .actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta .btn-gold {
  background: linear-gradient(135deg, var(--gold), #a97f36);
  color: #fff;
  padding: 12px 38px;
  border-radius: 28px;
  font-size: 16px;
  letter-spacing: 2px;
  font-weight: 600;
  box-shadow: 0 6px 18px rgba(201, 164, 92, .4);
  transition: transform .2s;
}
.cta .btn-gold:hover { transform: translateY(-2px); }
.cta .btn-ghost { border: 1px solid rgba(255, 255, 255, .6); color: #fff; padding: 12px 38px; border-radius: 28px; font-size: 16px; letter-spacing: 2px; transition: all .25s; }
.cta .btn-ghost:hover { background: rgba(255, 255, 255, .12); }

/* ---------- 页脚 ---------- */
.footer { background: #0f2740; color: #b9ccd8; font-size: 14px; }
.footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding: 46px 0 34px; }
.footer h5 { color: #fff; font-size: 16px; letter-spacing: 2px; margin-bottom: 16px; position: relative; padding-left: 12px; }
.footer h5::before { content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 3px; background: var(--gold); border-radius: 2px; }
.footer .about-txt { line-height: 1.9; }
.footer ul li { margin-bottom: 9px; }
.footer ul a:hover { color: var(--gold-soft); }
.footer .contact li { display: flex; gap: 8px; align-items: baseline; }
.footer .contact b { color: #e8d9b8; font-weight: 600; }
.footer .copyright {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 16px 0;
  text-align: center;
  font-size: 13px;
  color: #8ba3b3;
}
.footer .copyright a { color: #a9bfcc; }
.footer .copyright a:hover { color: #fff; }

/* ---------- 面包屑 / 页头横幅 ---------- */
.crumb {
  background: #fff;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--muted);
}
.crumb .container { padding: 12px 0; }
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--primary); }
.crumb .sep { margin: 0 8px; color: #b9c6cb; }
.crumb .cur { color: var(--primary-dark); }

.page-banner {
  position: relative;
  height: 240px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
}
.page-banner img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.page-banner::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10, 32, 48, .3), rgba(10, 32, 48, .66)); }
.page-banner .inner { position: relative; z-index: 2; }
.page-banner h2 { font-size: 36px; letter-spacing: 8px; font-weight: 700; }
.page-banner .en { font-family: var(--kaiti); color: var(--gold-soft); letter-spacing: 4px; margin-top: 4px; font-size: 16px; }

/* ---------- 产品列表页 ---------- */
.plist-wrap { display: grid; grid-template-columns: 240px 1fr; gap: 28px; padding: 34px 0 60px; align-items: start; }
.side { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; position: sticky; top: 90px; }
.side h4 { background: linear-gradient(90deg, var(--primary-deep), var(--primary-dark)); color: #fff; padding: 13px 20px; font-size: 16px; letter-spacing: 2px; }
.side .fgroup { padding: 14px 20px; border-bottom: 1px dashed var(--line); }
.side .fgroup .flabel { font-size: 13px; color: var(--muted); letter-spacing: 1px; margin-bottom: 10px; }
.side .fbtn {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 14px;
  border-radius: 7px;
  font-size: 14.5px;
  color: var(--text);
  transition: all .18s;
}
.side .fbtn:hover { background: #eef7f8; color: var(--primary-dark); }
.side .fbtn.on { background: linear-gradient(90deg, var(--primary), var(--primary-dark)); color: #fff; }
.side .tips { padding: 14px 20px; font-size: 12.5px; color: var(--muted); line-height: 1.9; }
.list-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.list-head h3 { font-size: 21px; color: var(--primary-deep); letter-spacing: 2px; }
.list-head .count { color: var(--muted); font-size: 13.5px; }
.list-head .sort { display: flex; gap: 8px; }
.list-head .sort button { padding: 6px 16px; border-radius: 17px; border: 1px solid var(--line); color: var(--muted); font-size: 13.5px; background: #fff; transition: all .2s; }
.list-head .sort button.on { background: var(--primary); border-color: var(--primary); color: #fff; }
.pgrid.list-mode { grid-template-columns: repeat(3, 1fr); }

/* ---------- 详情页 ---------- */
.pd-hero {
  background: linear-gradient(120deg, #0d3350, var(--primary-deep) 60%, var(--primary-dark));
  color: #fff;
  padding: 40px 0 34px;
}
.pd-hero .tags { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.pd-hero .tags span { padding: 4px 14px; border-radius: 15px; font-size: 13px; letter-spacing: 1px; }
.pd-hero .tags .series { background: var(--gold); color: #fff; }
.pd-hero .tags .days { background: rgba(255, 255, 255, .16); border: 1px solid rgba(255, 255, 255, .35); }
.pd-hero h1 { font-size: 34px; letter-spacing: 3px; }
.pd-hero .sub { color: #cfe3ea; margin-top: 8px; font-size: 15px; }
.pd-hero .meta { display: flex; gap: 30px; margin-top: 18px; flex-wrap: wrap; }
.pd-hero .meta .mi { font-size: 13.5px; color: #bcd6e0; display: flex; align-items: center; gap: 7px; }
.pd-hero .meta .mi svg { width: 17px; height: 17px; color: var(--gold-soft); }

.pd-wrap { display: grid; grid-template-columns: 1fr 330px; gap: 28px; padding: 34px 0 64px; align-items: start; }
.pd-main { min-width: 0; }
.card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 26px;
  overflow: hidden;
}
.card-hd {
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(180deg, #fbfdfd, #fff);
}
.card-hd .bar { width: 4px; height: 20px; background: linear-gradient(180deg, var(--gold), var(--primary)); border-radius: 2px; }
.card-hd h3 { font-size: 19px; color: var(--primary-deep); letter-spacing: 2px; }
.card-bd { padding: 22px 24px; }

/* 简版行程时间线 */
.timeline { position: relative; padding-left: 4px; }
.tl-item { display: flex; gap: 16px; position: relative; padding-bottom: 18px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before { content: ""; position: absolute; left: 21px; top: 44px; bottom: 0; width: 2px; background: var(--line); }
.tl-item:last-child::before { display: none; }
.tl-day {
  flex: none;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  line-height: 1.15;
  box-shadow: 0 4px 10px rgba(14, 122, 138, .3);
  z-index: 1;
}
.tl-day b { font-size: 16px; }
.tl-body { flex: 1; background: #f7fafb; border: 1px solid var(--line); border-radius: 9px; padding: 12px 16px; }
.tl-body .route { font-size: 14.5px; color: var(--text); font-weight: 600; }
.tl-body .mh { display: flex; gap: 20px; margin-top: 7px; font-size: 13px; color: var(--muted); flex-wrap: wrap; }
.tl-body .mh span b { color: var(--primary-dark); font-weight: 600; }

/* 行程详情 accordion */
.acc-item { border: 1px solid var(--line); border-radius: 9px; margin-bottom: 12px; overflow: hidden; background: #fff; }
.acc-hd {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  cursor: pointer;
  background: #f8fbfb;
  transition: background .2s;
}
.acc-hd:hover { background: #eef7f8; }
.acc-hd .dn {
  flex: none;
  width: 46px; height: 46px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--gold), #a97f36);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
}
.acc-hd .dt { flex: 1; min-width: 0; }
.acc-hd .dt .route { font-size: 15px; font-weight: 600; color: var(--primary-deep); }
.acc-hd .dt .dist { font-size: 12.5px; color: var(--muted); margin-top: 2px; }
.acc-hd .arr { color: var(--muted); transition: transform .25s; flex: none; }
.acc-item.open .acc-hd .arr { transform: rotate(180deg); color: var(--primary); }
.acc-bd { display: none; padding: 16px 20px 18px; border-top: 1px dashed var(--line); }
.acc-item.open .acc-bd { display: block; }
.acc-bd .hotel { background: #f2f8f9; border-left: 3px solid var(--primary); padding: 8px 14px; font-size: 13.5px; color: var(--primary-deep); margin-bottom: 12px; border-radius: 0 6px 6px 0; }
.acc-bd .desc p { margin-bottom: 12px; text-align: justify; font-size: 14.5px; }
.acc-bd .stay { margin-top: 4px; font-size: 13px; color: var(--muted); }
.acc-bd .stay b { color: var(--gold); }

/* 费用 */
.fee-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.fee-card { border-radius: 9px; overflow: hidden; border: 1px solid var(--line); }
.fee-card.hd-in { background: linear-gradient(135deg, #e8f5f3, #d8eeea); }
.fee-card.hd-out { background: linear-gradient(135deg, #fdf3e7, #f8e8d2); }
.fee-card .fh { padding: 12px 18px; font-size: 16px; font-weight: 700; letter-spacing: 2px; }
.fee-card.hd-in .fh { color: #0b6a5a; }
.fee-card.hd-out .fh { color: #a06a1f; }
.fee-card .fb { padding: 14px 18px 16px; font-size: 14px; background: #fff; }
.fee-card .fb li { padding-left: 20px; position: relative; margin-bottom: 7px; }
.fee-card .fb li::before { content: ""; position: absolute; left: 4px; top: 10px; width: 6px; height: 6px; border-radius: 50%; }
.fee-card.hd-in .fb li::before { background: #2a9d8f; }
.fee-card.hd-out .fb li::before { background: #d29a4c; }

.note-list li { display: flex; gap: 10px; margin-bottom: 9px; font-size: 14px; }
.note-list .n-ico { flex: none; width: 20px; height: 20px; border-radius: 50%; background: #eef7f8; color: var(--primary-dark); font-size: 12px; display: flex; align-items: center; justify-content: center; margin-top: 3px; font-weight: 700; }

/* 图册 */
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.gallery-grid img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: 7px; cursor: zoom-in; transition: transform .25s, box-shadow .25s; }
.gallery-grid img:hover { transform: scale(1.03); box-shadow: var(--shadow-lg); }

/* 侧栏 */
.pd-side { position: sticky; top: 90px; }
.side-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; margin-bottom: 20px; }
.side-card .cov { aspect-ratio: 16/10; overflow: hidden; }
.side-card .cov img { width: 100%; height: 100%; object-fit: cover; }
.side-card .bd { padding: 16px 18px; }
.side-card h4 { font-size: 16px; color: var(--primary-deep); letter-spacing: 1px; margin-bottom: 8px; }
.side-card .bd p { font-size: 13px; color: var(--muted); line-height: 1.8; }
.consult { background: linear-gradient(135deg, var(--primary-deep), var(--primary-dark)); color: #fff; text-align: center; }
.consult .big { font-size: 24px; font-weight: 700; letter-spacing: 1px; margin: 6px 0 2px; }
.consult .big b { color: #ffd98a; }
.consult p { font-size: 12.5px; color: #cfe3ea; }
.consult .btn-w {
  display: block;
  margin: 14px auto 0;
  background: #fff;
  color: var(--primary-deep);
  padding: 10px 0;
  border-radius: 24px;
  font-weight: 700;
  letter-spacing: 2px;
  transition: transform .2s;
}
.consult .btn-w:hover { transform: translateY(-2px); }
.rel-item { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px dashed var(--line); }
.rel-item:last-child { border-bottom: none; }
.rel-item img { width: 92px; height: 64px; object-fit: cover; border-radius: 7px; flex: none; }
.rel-item .t { font-size: 13.5px; color: var(--text); font-weight: 600; line-height: 1.5; }
.rel-item .m { font-size: 12px; color: var(--muted); margin-top: 2px; }
.rel-item:hover .t { color: var(--primary); }

/* ---------- 科普页 ---------- */
.sci-tabs { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-bottom: 30px; }
.sci-tabs button {
  padding: 9px 26px;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  font-size: 15px;
  letter-spacing: 1px;
  transition: all .22s;
}
.sci-tabs button:hover { border-color: var(--primary); color: var(--primary-dark); }
.sci-tabs button.on { background: linear-gradient(90deg, var(--primary), var(--primary-dark)); color: #fff; border-color: transparent; box-shadow: 0 6px 16px rgba(14, 122, 138, .3); }

.article-reader { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 34px 40px 40px; margin-top: 26px; }
.article-reader .a-cat { color: var(--gold); letter-spacing: 3px; font-size: 13.5px; }
.article-reader h2 { font-size: 27px; color: var(--primary-deep); letter-spacing: 2px; margin: 8px 0 6px; }
.article-reader .a-meta { color: var(--muted); font-size: 13px; padding-bottom: 16px; border-bottom: 1px dashed var(--line); margin-bottom: 18px; }
.article-reader .a-ph { border-radius: 9px; overflow: hidden; margin: 16px 0 20px; }
.article-reader .a-ph img { width: 100%; }
.article-reader .a-body p { margin-bottom: 14px; text-align: justify; text-indent: 2em; }
.article-reader .facts { background: #f2f8f9; border-left: 4px solid var(--primary); border-radius: 0 8px 8px 0; padding: 14px 18px; margin-top: 18px; }
.article-reader .facts h5 { color: var(--primary-deep); letter-spacing: 2px; margin-bottom: 6px; }
.article-reader .facts li { font-size: 13.5px; color: var(--muted); margin-bottom: 4px; }

/* ---------- 关于页 ---------- */
.about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 34px; align-items: start; }
.about-grid .card { margin-bottom: 0; }
.about-grid .txt p { margin-bottom: 14px; text-align: justify; }
.contact-table { width: 100%; font-size: 14.5px; }
.contact-table td { padding: 9px 4px; border-bottom: 1px dashed var(--line); }
.contact-table td:first-child { color: var(--muted); width: 90px; }

/* ---------- 灯箱 ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(8, 20, 32, .92);
  z-index: 999;
  display: none;
  align-items: center;
  justify-content: center;
}
.lightbox.show { display: flex; }
.lightbox img { max-width: 92vw; max-height: 88vh; border-radius: 6px; box-shadow: 0 20px 60px rgba(0, 0, 0, .5); }
.lightbox .lb-close {
  position: absolute;
  top: 22px; right: 30px;
  color: #fff;
  font-size: 34px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .12);
  line-height: 1;
}

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 60px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 20px;
  box-shadow: 0 6px 16px rgba(14, 122, 138, .4);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 300;
  transition: all .25s;
}
.to-top.show { display: flex; }
.to-top:hover { background: var(--primary-deep); transform: translateY(-3px); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .pgrid, .sci-grid, .video-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .plist-wrap { grid-template-columns: 1fr; }
  .side { position: static; }
  .pd-wrap { grid-template-columns: 1fr; }
  .pd-side { position: static; }
  .dest-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .nav ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--primary-deep);
    flex-direction: column;
    box-shadow: var(--shadow-lg);
  }
  .nav ul.open { display: flex; }
  .nav .drop { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border-radius: 0; background: #0b3d4a; }
  .nav .drop a { color: #d7e8ec; border-bottom: 1px solid rgba(255, 255, 255, .08); }
  .nav .drop a:hover { background: rgba(255, 255, 255, .1); }
  .header-tools .qr { display: none; }
  .hero .slides { height: 380px; }
  .hero .cap h2 { font-size: 32px; letter-spacing: 4px; }
  .stats .item .num { font-size: 24px; }
}
@media (max-width: 640px) {
  .pgrid, .sci-grid, .video-grid, .why-grid { grid-template-columns: 1fr; }
  .fee-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .brand .titles h1 { font-size: 21px; }
  .footer .cols { grid-template-columns: 1fr; gap: 24px; }
  .hero .slides { height: 320px; }
  .hero .cap h2 { font-size: 26px; }
  .stats .item + .item::before { display: none; }
  .stats .container { flex-wrap: wrap; }
  .stats .item { flex: 1 1 50%; }
  .btn-phone { padding: 8px 14px; font-size: 13px; }
  .pd-hero h1 { font-size: 25px; }
}