/* =========================================================
   鸿沃国际货运 HOS — 视觉设计系统（原型版）
   说明：品牌名/配色确认后，改 :root token 即可整体换肤。
   ========================================================= */
:root{
  /* 品牌色 token —— 改这里就能换肤 */
  --c-navy:#0E2A47;        /* 主色 深海军蓝 = 全球/信任 */
  --c-navy-2:#163a63;
  --c-blue:#1E6FD9;        /* 辅助蓝 */
  --c-accent:#FF7A1A;      /* 强调橙 = 速度/行动 */
  --c-accent-2:#FF9D4D;
  --c-ink:#16202E;         /* 正文 */
  --c-muted:#5B6B7E;       /* 次要文字 */
  --c-line:#E6ECF3;        /* 分隔线 */
  --c-bg:#FFFFFF;
  --c-bg-soft:#F4F8FC;     /* 浅底 */
  --c-bg-navy:#0B2238;     /* 深底 */

  /* 排版 */
  --ff:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --fs-hero:clamp(30px,4.4vw,52px);
  --fs-h2:clamp(24px,2.6vw,34px);
  --fs-h3:20px;

  /* 形状/阴影 */
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 12px 34px rgba(14,42,71,.10);
  --shadow-sm:0 4px 14px rgba(14,42,71,.07);
  --maxw:1200px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--ff);color:var(--c-ink);background:var(--c-bg);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.muted{color:var(--c-muted)}
.center{text-align:center}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:600;font-size:15px;transition:.18s;cursor:pointer;border:1px solid transparent}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(255,122,26,.30)}
.btn-primary:hover{background:var(--c-accent-2);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--c-navy);border-color:var(--c-line)}
.btn-ghost:hover{border-color:var(--c-blue);color:var(--c-blue)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}
.btn-sm{padding:8px 14px;font-size:13px;border-radius:8px;font-weight:600}

/* ---------- 顶部导航 ---------- */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:17px;color:var(--c-navy);letter-spacing:.3px}
.brand .logo{height:30px;width:auto;border-radius:8px;display:block}
.footer .brand .logo{height:34px}
.brand small{display:block;font-size:10px;font-weight:600;color:var(--c-muted);letter-spacing:1.2px}
.header .brand small{display:none}
.menu{display:flex;align-items:center;gap:2px;list-style:none}
.menu>li{position:relative}
.menu>li>a{display:flex;align-items:center;gap:5px;padding:9px 12px;font-size:14px;font-weight:500;color:var(--c-ink);border-radius:8px;transition:.15s}
.menu>li>a:hover{color:var(--c-blue);background:var(--c-bg-soft)}
.menu>li.has-sub>a::after{content:"";width:6px;height:6px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);margin-top:-3px;opacity:.6}
/* 下拉子菜单（二级） —— 必须是直接子菜单：只有悬停顶级项时才显示二级，避免把三级一起带出来 */
.submenu{position:absolute;top:100%;left:0;min-width:230px;background:#fff;border:1px solid var(--c-line);border-radius:12px;box-shadow:var(--shadow);padding:8px;opacity:0;visibility:hidden;transform:translateY(6px);transition:.18s;list-style:none}
.menu>li:hover > .submenu{opacity:1;visibility:visible;transform:translateY(0)}
.submenu li a{display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--c-ink)}
.submenu li a:hover{background:var(--c-bg-soft);color:var(--c-blue)}
.submenu li a b{display:block;font-size:14px}
.submenu li a span{display:block;font-size:12px;color:var(--c-muted)}
.nav-cta{display:flex;align-items:center;gap:6px}
.nav-cta::before{content:"";display:block;width:1px;height:22px;background:var(--c-line);margin-right:4px}
.nav-cta .login{font-size:14px;color:var(--c-muted);padding:8px 12px}
.nav-cta .login:hover{color:var(--c-blue)}
/* 移动端 */
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:var(--c-navy);border-radius:2px}
.mobile-menu{display:none;flex-direction:column;padding:10px 20px 20px;border-top:1px solid var(--c-line);background:#fff}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:12px 4px;border-bottom:1px solid var(--c-line);font-weight:500}
.mobile-menu .sub{font-size:14px;color:var(--c-muted);padding-left:14px}

/* ---------- 区块通用 ---------- */
.section{padding:72px 0}
.section-soft{background:var(--c-bg-soft)}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.5px;color:var(--c-blue);text-transform:uppercase;margin-bottom:12px}
.h2{font-size:var(--fs-h2);font-weight:800;line-height:1.25;color:var(--c-navy)}
.lead{font-size:17px;color:var(--c-muted);max-width:640px;margin-top:14px}
.section-head{text-align:center;max-width:720px;margin:0 auto 44px}

/* ---------- Hero ---------- */
.hero{position:relative;background:radial-gradient(1200px 500px at 80% -10%,rgba(30,111,217,.35),transparent),linear-gradient(160deg,var(--c-navy),var(--c-bg-navy));color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.10) 1px,transparent 1px);background-size:26px 26px;opacity:.5;mask-image:linear-gradient(180deg,#000,transparent)}
.hero .wrap{position:relative;z-index:2;padding:84px 20px 76px;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1{font-size:var(--fs-hero);font-weight:800;line-height:1.18;margin-bottom:18px}
.hero h1 .hl{color:var(--c-accent-2)}
.hero p{font-size:17px;color:rgba(255,255,255,.82);max-width:520px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:26px;margin-top:38px;flex-wrap:wrap}
.hero-stats .s b{font-size:26px;font-weight:800;color:#fff;display:block}
.hero-stats .s span{font-size:13px;color:rgba(255,255,255,.65)}
/* Hero 右侧追踪卡（示意） */
.track-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:18px;padding:22px;backdrop-filter:blur(6px)}
.track-card h4{font-size:15px;margin-bottom:14px;color:#fff;display:flex;align-items:center;gap:8px}
.track-card .field{background:rgba(255,255,255,.12);border-radius:10px;padding:11px 14px;font-size:14px;color:rgba(255,255,255,.9);margin-bottom:10px}
.track-card .bar{height:6px;border-radius:6px;background:rgba(255,255,255,.18);margin:14px 0;position:relative;overflow:hidden}
.track-card .bar i{position:absolute;left:0;top:0;bottom:0;width:72%;background:linear-gradient(90deg,var(--c-blue),var(--c-accent));border-radius:6px}
.track-card .steps{display:flex;justify-content:space-between;font-size:11px;color:rgba(255,255,255,.6)}

/* ---------- 卡片网格 ---------- */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-5{grid-template-columns:repeat(5,1fr)}
.card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:26px;transition:.18s;height:100%}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:transparent}
.card .ic{width:46px;height:46px;border-radius:12px;background:var(--c-bg-soft);display:grid;place-items:center;font-size:22px;margin-bottom:16px}
.card h3{font-size:17px;color:var(--c-navy);margin-bottom:8px}
.card p{font-size:14px;color:var(--c-muted)}
.card .more{display:inline-block;margin-top:14px;font-size:14px;font-weight:600;color:var(--c-blue)}

/* ---------- 优势条 ---------- */
.adv{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.adv .item{text-align:center;padding:24px 16px;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius)}
.adv .item .num{font-size:32px;font-weight:800;color:var(--c-accent);line-height:1}
.adv .item p{font-size:14px;color:var(--c-muted);margin-top:8px}

/* ---------- 新闻预览 ---------- */
.news-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;transition:.18s}
.news-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.news-card .thumb{height:150px;background:linear-gradient(135deg,var(--c-blue),var(--c-navy))}
.news-card .body{padding:18px}
.tag{display:inline-block;font-size:12px;font-weight:600;color:var(--c-blue);background:var(--c-bg-soft);padding:3px 10px;border-radius:999px;margin-bottom:10px}
.tag.active{background:var(--c-navy);color:#fff;cursor:pointer}
.news-filter .tag{cursor:pointer}
.news-content img{max-width:100%;border-radius:12px;margin:14px 0}
.news-detail .news-content p{margin-bottom:14px}
.news-card h4{font-size:16px;color:var(--c-navy);margin-bottom:8px;line-height:1.4}
.news-card .date{font-size:13px;color:var(--c-muted)}

/* ---------- CTA 带 ---------- */
.cta-band{background:linear-gradient(120deg,var(--c-navy),var(--c-blue));color:#fff;border-radius:20px;padding:48px;text-align:center}
.cta-band h2{font-size:28px;font-weight:800;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.85);margin-bottom:22px}

/* ---------- 页脚 ---------- */
.footer{background:var(--c-bg-navy);color:rgba(255,255,255,.75);padding:54px 0 28px}
.footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer h5{color:#fff;font-size:15px;margin-bottom:16px}
.footer a{display:block;font-size:14px;padding:5px 0;color:rgba(255,255,255,.7)}
.footer a:hover{color:var(--c-accent-2)}
.footer .brand{color:#fff;margin-bottom:14px}
.footer .brand small{color:rgba(255,255,255,.5)}
.footer .bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;font-size:13px;color:rgba(255,255,255,.5);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ---------- 内页通用 ---------- */
.page-hero{background:linear-gradient(160deg,var(--c-navy),var(--c-bg-navy));color:#fff;padding:26px 0 22px}
.page-hero h1{font-size:28px;font-weight:800;margin-bottom:6px}
.page-hero p{color:rgba(255,255,255,.8);max-width:620px;font-size:15px}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.6);margin-bottom:10px}
.breadcrumb a:hover{color:var(--c-accent-2)}
.placeholder-note{background:#fff;border:1px dashed var(--c-line);border-radius:var(--radius);padding:40px;text-align:center;color:var(--c-muted)}

/* ---------- 合作平台信任条 ---------- */
.partners{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;margin-top:10px}
.partners .p{font-size:14px;font-weight:700;color:var(--c-muted);background:#fff;border:1px solid var(--c-line);padding:10px 20px;border-radius:10px}

/* ---------- 三级下拉菜单 ---------- */
.submenu li.has-sub{position:relative}
.submenu li.has-sub>a::after{content:"";width:5px;height:5px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(-45deg);margin-left:auto;opacity:.5}
.sub-deep{position:absolute;top:0;left:100%;min-width:210px;background:#fff;border:1px solid var(--c-line);border-radius:12px;box-shadow:var(--shadow);padding:8px;opacity:0;visibility:hidden;transform:translateX(6px);transition:.18s;list-style:none;margin-left:4px;z-index:60}
/* 悬停对应二级菜单项时，才显示它自己的三级菜单（而非全部三级） */
.submenu li.has-sub:hover > .sub-deep{opacity:1;visibility:visible;transform:translateX(0)}
.sub-deep li a{padding:8px 12px;font-size:13px}

/* ---------- 服务/方案详情页 ---------- */
.detail-hero{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;margin:28px 0 40px}
.detail-hero h1{font-size:36px;color:var(--c-navy);margin-bottom:12px}
.detail-hero .lead{font-size:17px;color:var(--c-muted);margin-bottom:22px}
.detail-hero-img{background:var(--c-bg-soft);border-radius:18px;padding:30px;display:grid;place-items:center}
.detail-hero-img img{max-width:100%;height:auto}
.detail-body{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:32px;margin-bottom:40px}
.detail-body h3{font-size:20px;color:var(--c-navy);margin-bottom:18px}
.feature-list{list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.feature-list li{position:relative;padding-left:26px;font-size:15px;color:var(--c-ink)}
.feature-list li::before{content:"✓";position:absolute;left:0;top:0;color:var(--c-blue);font-weight:800}
.detail-siblings{margin-bottom:40px}
.detail-siblings h3{font-size:20px;color:var(--c-navy);margin-bottom:18px}
.detail-siblings .card{text-decoration:none}
.detail-siblings .card h4{font-size:16px;color:var(--c-navy);margin-bottom:8px}
.detail-siblings .card .link{display:inline-block;margin-top:12px;font-size:14px;font-weight:600;color:var(--c-blue)}

/* ---------- 右侧在线客服浮窗 ---------- */
#hos-contact-float{position:fixed;right:20px;bottom:20px;z-index:90;font-size:14px;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
/* 醒目胶囊按钮：带“在线咨询”汉字 */
.cf-btn{display:inline-flex;align-items:center;gap:8px;padding:13px 20px;border-radius:999px;background:linear-gradient(135deg,var(--c-accent),#FF5E0E);color:#fff;border:0;box-shadow:0 10px 26px rgba(255,94,14,.40);cursor:pointer;transition:.2s;font-size:15px;font-weight:700}
.cf-btn:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(255,94,14,.50)}
.cf-btn:active{transform:translateY(0)}
.cf-panel{position:absolute;right:0;bottom:64px;width:300px;background:#fff;border:1px solid var(--c-line);border-radius:16px;box-shadow:0 12px 40px rgba(0,0,0,.15);opacity:0;visibility:hidden;transform:translateY(10px);transition:.2s}
.cf-panel.open{opacity:1;visibility:visible;transform:translateY(0)}
.cf-head{background:var(--c-navy);color:#fff;padding:14px 18px;border-radius:16px 16px 0 0;font-weight:700;display:flex;align-items:center;justify-content:space-between}
.cf-close{background:none;border:0;color:rgba(255,255,255,.85);font-size:22px;line-height:1;cursor:pointer;padding:0 4px}
.cf-close:hover{color:#fff}
.cf-body{padding:14px}
.cf-item{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--c-line);position:relative}
.cf-item:last-child{border-bottom:0}
.cf-info{display:flex;flex-direction:column;gap:2px;min-width:72px}
.cf-item b{color:var(--c-navy);font-size:13px}
.cf-account{flex:1;color:var(--c-muted);font-size:13px;word-break:break-all}
.cf-item img{width:60px;height:60px;background:var(--c-bg-soft);border-radius:8px;object-fit:contain}
.cf-chat{display:inline-block;padding:6px 12px;border-radius:999px;background:var(--c-blue);color:#fff;font-size:12px;font-weight:700;margin-left:auto}
.cf-chat:hover{background:var(--c-navy)}
.cf-foot{padding:10px 18px 14px;font-size:12px;color:var(--c-muted);text-align:center}

/* ---------- 联系我们二维码 ---------- */
.qr-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
.qr-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:22px;text-align:center}
.qr-card img{width:140px;height:140px;background:var(--c-bg-soft);border-radius:10px;margin-bottom:14px}
.qr-card h4{font-size:16px;color:var(--c-navy);margin-bottom:4px}
.qr-card p{font-size:13px;color:var(--c-muted)}

/* ---------- 响应式 ---------- */
/* 平板及以下：收起桌面导航与 CTA，改用汉堡菜单（避免按钮挤压溢出） */
@media(max-width:1080px){
  .menu,.nav-cta{display:none}
  .burger{display:flex}
  .hero .wrap{grid-template-columns:1fr;gap:30px}
  .grid-3,.grid-4,.grid-5{grid-template-columns:repeat(2,1fr)}
  .adv{grid-template-columns:repeat(2,1fr)}
  .footer .cols{grid-template-columns:1fr 1fr}
}
/* 手机：单列布局 + 收紧间距 + CTA 按钮占满宽度 */
@media(max-width:680px){
  .grid-3,.grid-4,.grid-5,.adv{grid-template-columns:1fr}
  .footer .cols{grid-template-columns:1fr}
  .section{padding:52px 0}
  .hero .wrap{padding:52px 20px 44px}
  .hero h1{font-size:30px}
  .cta-band{padding:30px 22px}
  .cta-band h2{font-size:23px}
  .page-hero{padding:22px 0 18px}
  .page-hero h1{font-size:24px}
  .h2{font-size:22px}
  .brand{font-size:17px}
  .brand small{display:none}
  .mobile-menu .btn{width:100%;justify-content:center}
  .detail-hero{grid-template-columns:1fr}
  .detail-hero h1{font-size:28px}
  .feature-list{grid-template-columns:1fr}
  .qr-grid{grid-template-columns:1fr}
  #hos-contact-float{right:14px;bottom:14px}
  .cf-panel{width:min(300px,calc(100vw - 28px))}
  .cf-btn{padding:11px 16px;font-size:14px}
  .cf-btn span{gap:0}
}
@media(max-width:380px){
  .hero h1{font-size:26px}
  .brand{font-size:16px}
}