/* =========================================================
   西藏智程旅游文化有限责任公司 · 官网样式
   设计定位：高级简约 · 藏风质感（藏青蓝为主 / 藏红点缀 / 金线）
   说明：仅重构样式，未改动任何页面结构标签与数据字段。
   ========================================================= */
:root{
  /* 藏青蓝主色 */
  --navy:#1c3d5a;
  --navy-2:#163551;
  --navy-deep:#0e2436;
  /* 藏红点缀 */
  --red:#9e2b25;
  --red-2:#b5392f;
  /* 金线 */
  --gold:#c2a05a;
  --gold-2:#d8bd82;
  /* 文字 */
  --ink:#1f3040;
  --ink-2:#33485a;
  --muted:#6a7886;
  /* 线 / 背景 */
  --line:#e8e3d8;
  --line-2:#efebe1;
  --bg:#ffffff;
  --bg-alt:#f7f5ef;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 18px 44px -20px rgba(20,48,74,.20);
  --shadow-sm:0 8px 22px -14px rgba(20,48,74,.18);
  --maxw:1200px;
  --header-h:74px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  font-size:15px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.muted{color:var(--muted);font-size:14px}
section{padding:88px 0;scroll-margin-top:var(--header-h)}
.section-alt{background:var(--bg-alt)}

/* ---------------- 按钮 ---------------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;cursor:pointer;
  border:1.5px solid transparent;transition:.28s var(--ease);white-space:nowrap;
  letter-spacing:.3px;line-height:1}
.btn-primary{background:var(--navy);color:#fff;box-shadow:0 10px 24px -12px rgba(28,61,90,.7)}
.btn-primary:hover{background:var(--navy-2);transform:translateY(-2px);box-shadow:0 16px 30px -12px rgba(28,61,90,.55)}
.btn-outline{border-color:rgba(255,255,255,.9);color:#fff}
.btn-outline:hover{background:#fff;color:var(--navy);border-color:#fff}
.btn-ghost{color:var(--navy);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--navy);background:var(--bg-alt)}
.btn-phone{background:var(--red);color:#fff;box-shadow:0 10px 24px -12px rgba(158,43,37,.7)}
.btn-phone:hover{background:var(--red-2);transform:translateY(-2px)}

/* ---------------- 顶部导航 ---------------- */
.site-header{position:fixed;top:0;left:0;right:0;height:var(--header-h);z-index:100;
  display:flex;align-items:center;background:transparent;transition:.35s var(--ease);
  border-bottom:1px solid transparent}
.site-header.scrolled{background:rgba(255,255,255,.94);border-bottom-color:var(--line);
  box-shadow:0 8px 30px -22px rgba(20,48,74,.5);backdrop-filter:blur(10px)}
.site-header::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--navy) 0%,var(--gold) 50%,var(--red) 100%);opacity:0;transition:.35s}
.site-header.scrolled::before{opacity:1}
.header-inner{display:flex;align-items:center;justify-content:space-between;width:100%}
.brand{display:flex;align-items:center;gap:12px;color:#fff;transition:.3s;flex-shrink:0}
.site-header.scrolled .brand{color:var(--navy)}
.brand-mark{width:42px;height:42px;border-radius:11px;
  background:linear-gradient(135deg,var(--navy),var(--navy-2));color:var(--gold);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:21px;
  border:1px solid var(--gold);box-shadow:inset 0 0 0 2px rgba(194,160,90,.25)}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;letter-spacing:.4px;font-weight:700}
.brand-text em{font-style:normal;font-size:11px;opacity:.82;letter-spacing:1px}
.nav-links{display:flex;align-items:center;justify-content:center;flex:1;gap:8px;margin:0 18px}
.nav-link{padding:9px 16px;font-size:15px;color:rgba(255,255,255,.92);border-radius:9px;
  white-space:nowrap;transition:.22s var(--ease);font-weight:500;position:relative;display:inline-flex;align-items:center;line-height:1.2;flex-shrink:0}
.nav-item.has-children{flex-shrink:0}
.site-header.scrolled .nav-link{color:var(--ink-2)}
.nav-link:hover{background:rgba(255,255,255,.16);color:#fff}
.site-header.scrolled .nav-link:hover{background:var(--bg-alt);color:var(--navy)}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.lang-switch{font-size:13px;padding:9px 16px;border-radius:999px;border:1.5px solid rgba(255,255,255,.55);color:#fff}
.site-header.scrolled .lang-switch{border-color:var(--line);color:var(--navy)}
.lang-switch:hover{background:var(--gold);border-color:var(--gold);color:#fff}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:9px}
.hamburger span{width:25px;height:2px;background:#fff;transition:.3s;border-radius:2px}
.site-header.scrolled .hamburger span{background:var(--navy)}

/* ---------------- 首屏 Hero / 轮播 ---------------- */
.hero{position:relative;height:100vh;min-height:600px;overflow:hidden}
.slides{position:absolute;inset:0}
.slide{position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:0;transition:opacity 1.2s var(--ease);display:flex;align-items:center}
.slide.active{opacity:1}
.slide-mask{position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,36,54,.62) 0%,rgba(14,36,54,.34) 38%,rgba(14,36,54,.78) 100%)}
.slide-content{position:relative;z-index:2;color:#fff;max-width:820px;padding-top:var(--header-h)}
.slide-content h1{font-size:clamp(32px,5.4vw,60px);line-height:1.16;font-weight:800;
  letter-spacing:1px;text-shadow:0 3px 22px rgba(0,0,0,.4)}
.slide-content p{font-size:clamp(15px,2vw,21px);margin:20px 0 32px;color:rgba(255,255,255,.92);
  max-width:660px;font-weight:400}
.slide-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-dots{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:3;display:flex;gap:11px}
.hero-dots .dot{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.45);
  cursor:pointer;transition:.35s var(--ease);border:0}
.hero-dots .dot.on{background:var(--gold);width:30px;border-radius:6px}
.scroll-hint{position:absolute;bottom:26px;right:32px;z-index:3;color:rgba(255,255,255,.72);
  font-size:12px;letter-spacing:3px;writing-mode:vertical-rl}
.scroll-hint::after{content:"";display:block;width:1px;height:34px;margin:8px auto 0;
  background:linear-gradient(var(--gold),transparent)}
.slide-content .slide-eyebrow{font-size:clamp(12px,1.5vw,15px);letter-spacing:4px;text-transform:uppercase;
  color:var(--gold);font-weight:600;margin:0 0 16px;max-width:none;line-height:1.4;
  text-shadow:0 2px 14px rgba(0,0,0,.45)}
.slide-content .slide-desc{font-size:clamp(14px,1.7vw,18px);line-height:1.9;color:rgba(255,255,255,.92);
  max-width:680px;margin:18px 0 32px;font-weight:400;letter-spacing:.3px;
  text-shadow:0 2px 14px rgba(0,0,0,.4)}
.hero-tags{position:absolute;bottom:74px;left:50%;transform:translateX(-50%);z-index:3;
  display:flex;gap:10px;flex-wrap:wrap;justify-content:center;max-width:92%;padding:0 16px}
.hero-tags span{font-size:12.5px;letter-spacing:1px;color:rgba(255,255,255,.94);
  background:rgba(14,36,54,.4);border:1px solid rgba(255,255,255,.28);
  padding:7px 15px;border-radius:999px;backdrop-filter:blur(4px);white-space:nowrap}
@media (max-width:960px){.hero-tags{display:none}.slide-content .slide-desc{font-size:15px;margin:14px 0 24px}}

/* ---------------- 区块标题 ---------------- */
.section-head{text-align:center;max-width:760px;margin:0 auto 50px}
.section-head.left{text-align:left;margin-left:0;max-width:none}
.kicker{display:inline-block;color:var(--red);font-weight:700;letter-spacing:4px;
  font-size:13px;text-transform:uppercase;margin-bottom:14px;position:relative;padding:0 4px}
.kicker::before,.kicker::after{content:"";display:inline-block;width:26px;height:1px;
  background:var(--gold);vertical-align:middle;margin:0 12px;opacity:.7}
.section-head h2{font-size:clamp(25px,3.6vw,38px);color:var(--navy);font-weight:800;letter-spacing:1px}
.section-head h2::after{content:"";display:block;width:60px;height:3px;
  background:linear-gradient(90deg,var(--gold),var(--red));margin:18px auto 0;border-radius:2px}
.section-head.left h2::after{margin-left:0}

/* ---------------- 核心优势 ---------------- */
.adv-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:22px}
.adv-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 24px;
  text-align:center;transition:.3s var(--ease);position:relative;overflow:hidden}
.adv-card::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--navy),var(--gold));opacity:0;transition:.3s}
.adv-card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:var(--gold)}
.adv-card:hover::before{opacity:1}
.adv-icon{width:64px;height:64px;margin:0 auto 18px;color:var(--navy);
  background:linear-gradient(135deg,#f3f1ea,#fff);border:1px solid var(--line-2);
  border-radius:50%;display:flex;align-items:center;justify-content:center;transition:.3s}
.adv-card:hover .adv-icon{color:var(--red);border-color:var(--gold)}
.adv-icon svg{width:32px;height:32px}
.adv-card h3{font-size:18px;color:var(--navy);margin-bottom:10px;font-weight:700}
.adv-card p{font-size:13.5px;color:var(--muted);line-height:1.7}

/* ---------------- 线路 ---------------- */
.tour-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.tour-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:.3s var(--ease);border:1px solid var(--line);display:flex;flex-direction:column}
.tour-card:hover{transform:translateY(-10px);box-shadow:var(--shadow);border-color:var(--gold)}
.tour-cover{height:212px;background-size:cover;background-position:center;position:relative}
.tour-cover::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(14,36,54,.28))}
.tour-cat{position:absolute;left:14px;top:14px;background:rgba(28,61,90,.88);color:#fff;
  font-size:12px;padding:6px 13px;border-radius:999px;letter-spacing:.5px;backdrop-filter:blur(3px)}
.tour-flag{position:absolute;right:14px;top:14px;background:var(--red);color:#fff;
  font-size:12px;padding:6px 13px;border-radius:999px;letter-spacing:.5px}
.tour-body{padding:22px;flex:1;display:flex;flex-direction:column}
.tour-body h3{font-size:18px;color:var(--navy);margin-bottom:9px;line-height:1.45;font-weight:700}
.tour-route{font-size:12.5px;color:var(--navy);font-weight:600;letter-spacing:.2px;line-height:1.6;
  margin-bottom:8px;padding-bottom:8px;border-bottom:1px dashed var(--line);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tour-sum{font-size:13.5px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.tour-facts{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 2px}
.tour-facts span{font-size:11.5px;color:var(--navy);background:var(--bg-alt);border:1px solid var(--line);
  padding:3px 9px;border-radius:20px;line-height:1.7;white-space:nowrap}
.tour-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;
  padding-top:16px;border-top:1px dashed var(--line)}
.tour-meta .days{font-size:13.5px;color:var(--muted)}
.tour-meta .price{color:var(--red);font-weight:800;font-size:22px}
.tour-meta .price small{font-size:13px;font-weight:600;color:var(--muted)}

/* ---------------- 景点 ---------------- */
.attr-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.attr-card{display:block;text-decoration:none;color:inherit;border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-sm);background:#fff;
  transition:.3s var(--ease);border:1px solid var(--line)}
.attr-card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:var(--gold)}
.attr-cover{height:188px;background-size:cover;background-position:center;transition:.4s var(--ease)}
.attr-card:hover .attr-cover{transform:scale(1.04)}
.attr-body{padding:20px}
.attr-tag{display:inline-block;font-size:12px;color:var(--red);background:rgba(158,43,37,.07);
  padding:4px 11px;border-radius:999px;margin-bottom:10px;letter-spacing:.5px}
.attr-body h3{font-size:18px;color:var(--navy);font-weight:700}
.attr-body p{font-size:13.5px;color:var(--muted);margin-top:9px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.attr-more{display:inline-block;margin-top:12px;font-size:13px;font-weight:700;color:var(--red);
  letter-spacing:.3px;transition:.25s var(--ease)}
.attr-card:hover .attr-more{transform:translateX(5px)}

/* ---------------- 案例 / 实拍 ---------------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{margin:0;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);background:#fff;
  border:1px solid var(--line);transition:.3s var(--ease)}
.case-card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:var(--gold)}
.case-card img{height:228px;width:100%;object-fit:cover;transition:.5s var(--ease)}
.case-card:hover img{transform:scale(1.05)}
.case-card figcaption{padding:20px}
.case-card h4{font-size:17px;color:var(--navy);margin-bottom:7px;font-weight:700}
.case-card p{font-size:13.5px;color:var(--muted);line-height:1.7}
.case-date{font-size:12px;color:var(--gold);font-weight:600;letter-spacing:1px}

/* ---------------- 资质 ---------------- */
.cert-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:34px;max-width:780px;margin:0 auto}
.cert-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  text-align:center;box-shadow:var(--shadow-sm);transition:.3s var(--ease)}
.cert-card:hover{box-shadow:var(--shadow);border-color:var(--gold)}
.cert-card img{height:360px;width:100%;object-fit:contain;background:#faf9f5;
  border:1px solid var(--line-2);border-radius:12px}
.cert-card h4{color:var(--navy);margin:16px 0 7px;font-size:17px;font-weight:700}
.cert-card p.muted{font-size:13px;line-height:1.7}

/* ---------------- 资讯 ---------------- */
.section-lead{margin:14px auto 0;max-width:680px;font-size:15px;color:var(--muted);line-height:1.85}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);
  border:1px solid var(--line);transition:.3s var(--ease);display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:var(--gold)}
.news-cover{height:178px;background-size:cover;background-position:center}
.news-body{padding:20px;flex:1;display:flex;flex-direction:column}
.news-cat{font-size:12px;color:var(--red);font-weight:700;letter-spacing:.5px}
.news-body h3{font-size:17px;color:var(--navy);margin:9px 0;line-height:1.45;font-weight:700}
.news-body p{font-size:13.5px;color:var(--muted);line-height:1.7;flex:1}
.news-date{display:block;font-size:12px;color:#9aa6b2;letter-spacing:.5px}
.news-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding-top:12px;border-top:1px dashed var(--line)}
.news-more{font-size:13px;color:var(--red);font-weight:700;letter-spacing:.5px;white-space:nowrap}
.news-more i{font-style:normal;display:inline-block;transition:.22s var(--ease)}
.news-card:hover .news-more i{transform:translateX(4px)}
.news-card{color:inherit;text-decoration:none}
.news-card:hover .news-body h3{color:var(--red)}
/* 首页资讯"查看全部"按钮 + 独立列表页分页 */
.news-more-wrap{text-align:center;margin-top:30px}
.pager{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:34px}
.pg{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 14px;border-radius:10px;background:#fff;border:1px solid var(--line);color:var(--navy);font-weight:700;font-size:14px;transition:.2s var(--ease)}
.pg:hover{background:var(--sky);border-color:var(--navy);text-decoration:none}
.pg.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.pg.disabled{color:#c2c2c2;background:#f6f6f6;cursor:default;border-color:#eee}
.pg.disabled:hover{text-decoration:none}
.news-hero{position:relative;height:46vh;min-height:340px;background-size:cover;background-position:center;display:flex;align-items:flex-end}
.news-hero .slide-mask{background:linear-gradient(180deg,rgba(20,48,74,.12) 0%,rgba(20,48,74,.8) 100%)}
.news-hero .container{position:relative;z-index:2;padding-bottom:48px}
.news-hero .news-cat{display:inline-block;background:var(--red);color:#fff;padding:4px 12px;border-radius:20px;margin-bottom:12px}
.news-hero h1{color:#fff;font-size:34px;font-weight:800;letter-spacing:.5px;text-shadow:0 2px 18px rgba(0,0,0,.35);max-width:880px}
.news-hero .news-date{color:rgba(255,255,255,.85);margin-top:10px}
.news-crumb{font-size:13px;color:rgba(255,255,255,.72);letter-spacing:.3px;margin-bottom:14px}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:12px}
.news-editor{font-size:13px;color:rgba(255,255,255,.7)}
.news-detail{max-width:820px}
.news-article{font-size:16px;line-height:2;color:var(--ink-2);padding:38px 0}
.news-article p{margin:0 0 22px}
.news-article>p:first-of-type{font-size:17px;line-height:2.05;color:var(--ink)}
.news-article .md-h{font-size:21px;font-weight:800;color:var(--navy);margin:38px 0 16px;padding-left:14px;
  border-left:4px solid var(--red);line-height:1.5}
.news-article .md-table{margin:0 0 26px;overflow-x:auto;-webkit-overflow-scrolling:touch}
.news-article table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.75;min-width:520px}
.news-article th{background:var(--bg-alt);color:var(--navy);font-weight:700;text-align:left;
  padding:12px 14px;border:1px solid var(--line);white-space:nowrap}
.news-article td{padding:11px 14px;border:1px solid var(--line);color:var(--ink-2);vertical-align:top}
.news-article tbody tr:nth-child(even) td{background:#fbfcfd}
.md-qa{margin:0 0 18px;padding:18px 20px;background:var(--bg-alt);border-radius:12px;border-left:3px solid var(--gold)}
.md-img{max-width:100%;height:auto;border-radius:12px;margin:18px 0;display:block;box-shadow:0 6px 22px rgba(16,42,67,.08)}
.news-article p:has(> .md-img){padding:0}
.md-q{font-weight:800!important;color:var(--navy)!important;margin:0 0 8px!important;font-size:16px!important}
.md-a{color:var(--ink-2);margin:0!important}
.news-back{margin-top:8px;padding-bottom:18px}
@media (max-width:760px){
  .news-hero{height:38vh;min-height:280px}
  .news-hero h1{font-size:24px}
  .news-article{font-size:15px;line-height:1.9}
  .news-crumb{font-size:12px;margin-bottom:10px}
  .news-article .md-h{font-size:18px;margin:30px 0 14px;padding-left:11px}
  .news-article table{font-size:13px;min-width:460px}
  .news-article th,.news-article td{padding:10px 11px}
  .md-qa{padding:15px 16px;border-radius:10px}
}

/* ---------------- 联系 ---------------- */
.contact-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center}
.contact-list{list-style:none;margin:24px 0}
.contact-list li{padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--ink-2)}
.contact-list li b{color:var(--navy);font-weight:700;margin-right:6px}
.contact-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:14px}
.contact-side{text-align:center;background:var(--bg-alt);border:1px solid var(--line);
  border-radius:var(--radius);padding:30px}
.contact-qr{width:200px;height:200px;object-fit:contain;border:1px solid var(--line);
  border-radius:14px;padding:10px;background:#fff;margin:0 auto 14px}
.contact-map{margin-top:8px}
.map-ph{height:150px;border-radius:12px;background:
  linear-gradient(135deg,var(--navy),var(--navy-2));position:relative;overflow:hidden}
.map-ph::after{content:"📍 拉萨 · Lhasa";position:absolute;inset:0;display:flex;
  align-items:center;justify-content:center;color:var(--gold-2);font-size:18px;letter-spacing:3px;
  font-weight:600}

/* ---------------- 页脚 ---------------- */
.site-footer{background:var(--navy-deep);color:#c4d0db;padding:60px 0 0;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--navy) 0%,var(--gold) 50%,var(--red) 100%)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:16px;font-weight:700;position:relative;padding-left:14px}
.site-footer h4::before{content:"";position:absolute;left:0;top:3px;bottom:3px;width:3px;
  background:linear-gradient(var(--gold),var(--red));border-radius:2px}
.site-footer p{font-size:14px;margin:7px 0;line-height:1.7;color:#aebcc9}
.footer-qr{width:120px;height:120px;background:#fff;border-radius:10px;padding:7px;margin-top:10px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding:20px 0;
  text-align:center;font-size:13px;color:#8298ac;line-height:1.8}
.footer-bottom a{color:var(--gold-2)}

/* ---------------- 移动端浮动按钮 ---------------- */
.mobile-float{position:fixed;bottom:20px;right:18px;z-index:90;display:none;flex-direction:column;gap:13px}
.mf-btn{width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:14px;font-weight:600;box-shadow:0 10px 26px -8px rgba(0,0,0,.5);text-align:center;
  border:2px solid rgba(255,255,255,.85);transition:.25s}
.mf-call{background:var(--red)}
.mf-chat{background:var(--navy)}
.mf-btn:active{transform:scale(.94)}

/* ---------------- 关于我们 ---------------- */
.about-intro{font-size:18px;color:var(--ink);max-width:900px;text-align:center;margin:0 auto 36px;line-height:1.9}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:900px;margin:0 auto}
.stat{text-align:center;padding:28px 12px;background:var(--bg-alt);border-radius:var(--radius);
  border:1px solid var(--line);position:relative}
.stat b{display:block;font-size:36px;color:var(--red);font-weight:800;line-height:1}
.stat span{font-size:13.5px;color:var(--muted);margin-top:10px;display:block}
.about-paras{max-width:840px;margin:0 auto;font-size:16px;color:var(--ink-2);line-height:1.95}
.about-paras p{margin-bottom:20px}
.about-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.ag{position:relative;display:block;width:100%;padding:0;border:0;cursor:pointer;
  height:210px;border-radius:12px;overflow:hidden;background:#e9edf1;
  box-shadow:var(--shadow-sm);transition:.4s var(--ease)}
.ag-img{position:absolute;inset:0;background-size:cover;background-position:center;
  transition:transform .6s var(--ease)}
.ag:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.ag:hover .ag-img{transform:scale(1.07)}
.ag-cap{position:absolute;left:0;right:0;bottom:0;padding:26px 14px 12px;
  font-size:13.5px;color:#fff;text-align:left;letter-spacing:.3px;
  background:linear-gradient(transparent,rgba(12,28,44,.78))}
.ag-zoom{position:absolute;top:10px;right:10px;padding:4px 10px;border-radius:20px;
  font-size:11.5px;color:var(--navy);background:rgba(255,255,255,.92);
  opacity:0;transform:translateY(-4px);transition:.3s var(--ease)}
.ag:hover .ag-zoom{opacity:1;transform:translateY(0)}

/* ---------------- 图片灯箱 ---------------- */
.lightbox{position:fixed;inset:0;z-index:9999;display:none;align-items:center;justify-content:center;
  flex-direction:column;padding:40px 20px;background:rgba(8,18,30,.92);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.lightbox.open{display:flex}
.lb-img{max-width:min(1100px,92vw);max-height:78vh;border-radius:10px;
  box-shadow:0 30px 80px -20px rgba(0,0,0,.7);object-fit:contain}
.lb-cap{margin-top:16px;font-size:14.5px;color:rgba(255,255,255,.88);letter-spacing:.4px;text-align:center}
.lb-close{position:absolute;top:18px;right:22px;width:44px;height:44px;border:0;border-radius:50%;
  background:rgba(255,255,255,.14);color:#fff;font-size:28px;line-height:1;cursor:pointer;transition:.25s}
.lb-close:hover{background:rgba(255,255,255,.28)}

/* ---------------- 线路详情 ---------------- */
.tour-hero{height:64vh;min-height:440px;background-size:cover;background-position:center;
  display:flex;align-items:flex-end;position:relative}
.tour-hero .container{position:relative;z-index:2;color:#fff;padding-bottom:46px}
.tour-hero h1{font-size:clamp(28px,4.4vw,48px);font-weight:800;text-shadow:0 3px 18px rgba(0,0,0,.45);letter-spacing:.5px}
.tour-hero p{font-size:17px;max-width:660px;margin:14px 0 18px;color:rgba(255,255,255,.92)}
.td-route{font-size:15px;color:rgba(255,255,255,.95);font-weight:600;letter-spacing:.3px;margin:12px 0 0;line-height:1.7}
.td-facts{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px}
.td-facts span{font-size:13px;color:#fff;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.34);
  padding:5px 13px;border-radius:22px;line-height:1.6;backdrop-filter:blur(4px)}
.td-cat{display:inline-block;background:var(--red);color:#fff;padding:6px 16px;border-radius:999px;
  font-size:13px;margin-bottom:14px;letter-spacing:.5px}
.td-meta{display:flex;gap:22px;align-items:center;font-size:16px}
.td-price{color:var(--gold-2);font-weight:800;font-size:24px}
.td-highlights{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:1000px;margin:0 auto}
.td-highlights li{background:#fff;border:1px solid var(--line);border-left:3px solid var(--red);
  padding:16px 20px;border-radius:10px;font-size:15px;color:var(--ink-2);line-height:1.6}
.td-itinerary{max-width:880px;margin:0 auto}
.td-day{display:flex;gap:22px;padding:22px 0;border-bottom:1px dashed var(--line)}
.td-day-no{background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;min-width:88px;height:88px;
  border-radius:14px;display:flex;align-items:center;justify-content:center;text-align:center;
  font-weight:700;font-size:15px;flex-direction:column;box-shadow:var(--shadow-sm)}
.td-day-body h4{color:var(--navy);font-size:17px;margin-bottom:7px;font-weight:700}
.td-day-body p{color:var(--ink-2);font-size:14.5px;line-height:1.7}
.td-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.td-gallery-item{height:208px;border-radius:12px;background-size:cover;background-position:center;
  box-shadow:var(--shadow-sm);transition:.4s var(--ease)}
.td-gallery-item:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.td-info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:34px;max-width:1040px;margin:0 auto}
.td-info-grid h3{color:var(--navy);margin-bottom:14px;font-size:18px;font-weight:700;
  padding-bottom:10px;border-bottom:2px solid var(--line-2)}
.td-info-grid ul{list-style:none}
.td-info-grid li{padding:9px 0 9px 22px;position:relative;color:var(--ink-2);font-size:14.5px;line-height:1.6}
.td-info-grid li::before{content:"•";color:var(--red);position:absolute;left:0;font-weight:800;font-size:18px;top:6px}
.td-cta{text-align:center;background:linear-gradient(135deg,var(--navy-deep),var(--navy));color:#fff}
.td-cta h2{font-size:30px;margin-bottom:22px;font-weight:800}
.td-cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ---------------- 响应式 ---------------- */
@media (max-width:960px){
  .brand-text strong{font-size:14px}
  .brand-text em{font-size:10px;letter-spacing:.5px}
  .nav-links{position:absolute;top:var(--header-h);left:0;right:0;background:#fff;flex-direction:column;
    padding:12px 18px;gap:4px;box-shadow:0 20px 40px -24px rgba(20,48,74,.4);display:none;border-bottom:1px solid var(--line);justify-content:flex-start}
  .nav-links.open{display:flex}
  .nav-link{color:var(--ink-2)!important;padding:13px 12px;border-radius:9px;font-size:16px;white-space:nowrap}
  .nav-link:hover{background:var(--bg-alt);color:var(--navy)}
  .header-actions .btn-phone,.header-actions .btn-primary{display:none}
  .hamburger{display:flex}
  .mobile-float{display:flex}
}
@media (max-width:1080px){
  .brand-text strong{font-size:13px}
  .brand-text em{display:none}
  .nav-link{font-size:13.5px;padding:9px 10px}
  .header-actions{gap:8px}
  .adv-grid{grid-template-columns:repeat(3,1fr)}
  .tour-grid,.case-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .attr-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .td-highlights,.td-gallery,.stats,.about-gallery,.td-info-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:760px){
  :root{--header-h:60px}
  body{font-size:14.5px}
  section{padding:56px 0}
  .container{padding:0 18px}
  .slide-content h1{font-size:30px}
  .slide-content p{font-size:15px;margin:14px 0 22px}
  .slide-btns .btn{padding:13px 22px;font-size:15px;min-height:46px}
  .scroll-hint{display:none}
  .adv-grid,.tour-grid,.case-grid,.news-grid,.attr-grid,.td-highlights,.td-gallery,.stats,.about-gallery,.td-info-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cert-grid{grid-template-columns:1fr}
  .cert-card img{height:260px}
  .contact-grid{gap:28px}
  .mobile-float{display:flex}
  .hero{height:90vh;min-height:520px}
  .tour-hero{height:54vh;min-height:380px}
  .td-day{flex-direction:column;gap:12px}
  .td-day-no{height:auto;min-width:0;padding:12px 16px;flex-direction:row}
  .section-head{margin-bottom:36px}
}

@media (max-width:760px){
  .tour-route{font-size:12px}
  .tour-facts span{font-size:11px;padding:3px 8px}
  .td-route{font-size:13.5px}
  .td-facts span{font-size:12px;padding:4px 10px}
}


/* ===== 导航子菜单下拉 ===== */
.nav-item.has-children { position: relative; }
.nav-item.has-children > .nav-link .caret { font-size: 10px; margin-left: 3px; opacity: .8; }
.nav-dropdown {
  position: absolute; top: 100%; left: 0; min-width: 168px;
  background: #fff; border-radius: 10px; box-shadow: 0 12px 30px rgba(0,0,0,.12);
  padding: 8px; display: none; z-index: 50; flex-direction: column;
}
.nav-item.has-children:hover .nav-dropdown { display: flex; }
.nav-sub { display: block; padding: 9px 12px; color: var(--ink-2); border-radius: 7px; font-size: 14.5px; white-space: nowrap; }
.nav-sub:hover { background: var(--bg-alt); color: var(--navy); }
.site-header.scrolled .nav-sub { color: var(--ink-2); }

/* ===== 关于我们 子栏目 Tab（胶囊） ===== */
.about-tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin: 8px auto 28px; max-width: 760px; }
.about-tab {
  padding: 9px 20px; border-radius: 999px; border: 1px solid rgba(0,0,0,.08);
  color: var(--ink-2); font-size: 15px; background: #fff; transition: .2s;
}
.about-tab:hover { border-color: var(--navy); color: var(--navy); }
.about-tab.active { background: var(--navy); color: #fff; border-color: var(--navy); }

/* ===== 资质公示 ===== */
.cert-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.cert-card { border: 1px solid rgba(0,0,0,.08); border-radius: var(--radius); padding: 14px; background: #fff; text-align: center; }
.cert-card img { width: 100%; height: 180px; object-fit: contain; border-radius: 8px; background: var(--bg-alt); margin-bottom: 10px; }
.cert-meta b { display: block; font-size: 15px; color: var(--ink-1); }
.cert-meta span { font-size: 13px; color: var(--muted); }

/* ===== 售后服务 ===== */
.as-hotline { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; background: var(--bg-alt); border-radius: var(--radius); padding: 18px 22px; margin: 18px 0; }
.as-hl-label { color: var(--muted); font-size: 14px; }
.as-hl-num { font-size: 22px; color: var(--red); font-weight: 800; }
.as-hotline p { width: 100%; margin: 4px 0 0; font-size: 13.5px; color: var(--muted); }
.as-steps { display: grid; gap: 14px; margin-top: 10px; }
.as-step { display: flex; gap: 14px; padding: 16px; border: 1px solid rgba(0,0,0,.08); border-radius: var(--radius); background: #fff; }
.as-no { flex: 0 0 42px; height: 42px; border-radius: 50%; background: var(--navy); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; }
.as-step h4 { margin: 0 0 4px; font-size: 16px; }
.as-step p { margin: 0; color: var(--muted); font-size: 14px; }

/* ===== 好评点评 卡片墙 ===== */
.rv-wall { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.rv-card { border: 1px solid rgba(0,0,0,.08); border-radius: var(--radius); padding: 20px; background: #fff; display: flex; flex-direction: column; gap: 12px; }
.rv-top { display: flex; align-items: center; gap: 12px; }
.rv-avatar { width: 46px; height: 46px; border-radius: 50%; object-fit: cover; background: var(--bg-alt); }
.rv-id { display: flex; flex-direction: column; }
.rv-id b { font-size: 15px; color: var(--ink-1); }
.rv-stars { color: var(--red); font-size: 14px; letter-spacing: 2px; }
.rv-date { margin-left: auto; font-size: 12.5px; color: var(--muted); }
.rv-text { margin: 0; color: var(--ink-2); line-height: 1.7; font-size: 14.5px; }
.rv-imgs { display: flex; flex-wrap: wrap; gap: 8px; }
.rv-imgs img { width: 84px; height: 84px; object-fit: cover; border-radius: 8px; }

/* ===== 移动端 ===== */
@media (max-width: 768px) {
  .cert-grid, .rv-wall { grid-template-columns: 1fr; }
  .nav-dropdown { position: static; box-shadow: none; padding: 4px 0 4px 18px; }
  .nav-item.has-children:hover .nav-dropdown { display: none; }
  .nav-links.open .nav-dropdown { display: flex; }
}