/* ============================================================
   港澳船运通 · 公共港澳物流船运 B2B 平台
   设计系统 / 共享样式
   风格：简约科技感 · 深海军蓝 + 航运青 · 卡片化 · 响应式
   ============================================================ */

:root {
  --navy:      #0B1F3A;
  --navy-2:    #102A4C;
  --navy-3:    #1B3A66;
  --blue:      #2563EB;
  --accent:    #00B4D8;   /* 航运青 */
  --accent-d:  #0091AD;
  --bg:        #F4F6FA;
  --bg-soft:   #EEF3F9;
  --card:      #FFFFFF;
  --text:      #1F2937;
  --text-2:    #374151;
  --muted:     #6B7280;
  --line:      #E5E7EB;
  --line-2:    #D8DEE9;
  --ok:        #16A34A;
  --warn:      #D97706;
  --radius:    14px;
  --radius-sm: 10px;
  --shadow:    0 6px 24px rgba(11, 31, 58, .08);
  --shadow-sm: 0 2px 10px rgba(11, 31, 58, .06);
  --maxw:      1200px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------------- 顶部导航 ---------------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 31, 58, .92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 19px; letter-spacing: .5px; }
.brand .logo-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--blue));
  display: grid; place-items: center; color: #fff; font-size: 18px;
  box-shadow: 0 4px 12px rgba(0,180,216,.4);
}
.brand small { display:block; font-size: 11px; font-weight: 500; color: #9DB4CE; letter-spacing: 2px; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  color: #C7D4E6; padding: 8px 14px; border-radius: 8px; font-size: 15px;
  transition: .18s;
}
.nav-links a:hover { color: #fff; background: rgba(255,255,255,.07); }
.nav-links a.active { color: #fff; background: rgba(0,180,216,.18); }

.nav-cta { display: flex; align-items: center; gap: 10px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: 10px; font-size: 15px; font-weight: 600;
  transition: .18s; white-space: nowrap;
}
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--blue)); color: #fff; box-shadow: 0 6px 18px rgba(37,99,235,.35); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(37,99,235,.45); }
.btn-ghost { background: rgba(255,255,255,.08); color: #fff; border: 1px solid rgba(255,255,255,.18); }
.btn-ghost:hover { background: rgba(255,255,255,.16); }
.btn-outline { background: #fff; color: var(--blue); border: 1.5px solid var(--blue); }
.btn-outline:hover { background: var(--bg-soft); }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-block { width: 100%; }

.nav-toggle { display: none; color: #fff; font-size: 26px; line-height: 1; }

/* ---------------- Hero ---------------- */
.hero {
  position: relative; overflow: hidden;
  background: radial-gradient(1200px 500px at 80% -10%, rgba(0,180,216,.35), transparent 60%),
              linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 55%, var(--navy-3) 100%);
  color: #fff; padding: 72px 0 88px;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 38px 38px; mask-image: radial-gradient(circle at 70% 30%, #000, transparent 70%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; max-width: 820px; }
.hero .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(0,180,216,.15); color: #7FE3F2; border: 1px solid rgba(0,180,216,.35);
  padding: 6px 14px; border-radius: 999px; font-size: 13px; margin-bottom: 18px;
}
.hero h1 { font-size: 44px; line-height: 1.2; font-weight: 800; letter-spacing: .5px; }
.hero h1 .hl { color: var(--accent); }
.hero p.lead { margin-top: 18px; font-size: 18px; color: #C7D4E6; max-width: 640px; }

.hero-search {
  margin-top: 34px; background: #fff; border-radius: 16px; padding: 16px;
  box-shadow: 0 20px 50px rgba(0,0,0,.3); display: grid;
  grid-template-columns: 1fr 1fr 1fr auto; gap: 12px; align-items: end;
}
.hero-search .field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; padding-left: 2px; }
.hero-search .field select, .hero-search .field input {
  width: 100%; padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px;
  font-size: 15px; color: var(--text); background: #fff;
}
.hero-search .field select:focus, .hero-search .field input:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }

/* ---------------- 数据条 ---------------- */
.stats { background: #fff; border-radius: 16px; margin-top: -44px; position: relative; z-index: 2;
  box-shadow: var(--shadow); display: grid; grid-template-columns: repeat(4, 1fr); }
.stats .stat { padding: 22px 24px; text-align: center; border-right: 1px solid var(--line); }
.stats .stat:last-child { border-right: none; }
.stats .num { font-size: 30px; font-weight: 800; color: var(--navy); }
.stats .num span { color: var(--accent-d); }
.stats .lbl { font-size: 14px; color: var(--muted); margin-top: 2px; }

/* ---------------- 通用区块 ---------------- */
.section { padding: 64px 0; }
.section.soft { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 40px; }
.section-head .tag { color: var(--accent-d); font-weight: 700; font-size: 14px; letter-spacing: 2px; }
.section-head h2 { font-size: 32px; font-weight: 800; color: var(--navy); margin-top: 8px; }
.section-head p { color: var(--muted); margin-top: 10px; font-size: 16px; }

/* 服务卡片 */
.grid { display: grid; gap: 22px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow-sm); transition: .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--line-2); }
.svc .ico {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(0,180,216,.15), rgba(37,99,235,.15));
  color: var(--blue); font-size: 24px; margin-bottom: 16px;
}
.svc h3 { font-size: 18px; color: var(--navy); }
.svc p { color: var(--muted); font-size: 14px; margin-top: 8px; }

/* ---------------- 列表/卡片(船运/广告) ---------------- */
.toolbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; margin-bottom: 24px;
  background: #fff; padding: 18px; border-radius: var(--radius); border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.toolbar .field { display: flex; flex-direction: column; gap: 6px; }
.toolbar .field label { font-size: 13px; color: var(--muted); }
.toolbar select, .toolbar input {
  padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; font-size: 14px; min-width: 150px; background: #fff;
}
.toolbar .grow { flex: 1; }

.ship-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px; box-shadow: var(--shadow-sm); transition: .2s; display: flex; flex-direction: column; gap: 14px; }
.ship-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.ship-route { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 18px; color: var(--navy); }
.ship-route .arrow { color: var(--accent); font-size: 20px; }
.ship-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--text-2); font-size: 14px; }
.ship-meta .m { display: inline-flex; align-items: center; gap: 6px; }
.ship-foot { display: flex; align-items: center; justify-content: space-between; border-top: 1px dashed var(--line); padding-top: 12px; }
.chip { font-size: 12px; padding: 4px 10px; border-radius: 999px; background: var(--bg-soft); color: var(--navy-3); font-weight: 600; }
.chip.green { background: #E7F7EE; color: var(--ok); }
.chip.blue { background: #E6F0FF; color: var(--blue); }
.company { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
.company .dot { width: 22px; height: 22px; border-radius: 50%; background: linear-gradient(135deg,var(--accent),var(--blue)); color:#fff; display:grid; place-items:center; font-size:12px; }

/* 广告/资讯 */
.news-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: .2s; display: flex; flex-direction: column; }
.news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.news-thumb { height: 150px; background: linear-gradient(135deg, var(--navy-2), var(--accent-d)); position: relative; }
.news-thumb .cat { position: absolute; left: 14px; top: 14px; background: rgba(255,255,255,.92); color: var(--navy); font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px; }
.news-body { padding: 18px 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.news-body h3 { font-size: 17px; color: var(--navy); }
.news-body p { color: var(--muted); font-size: 14px; flex: 1; }
.news-foot { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: 13px; }

/* CTA banner */
.cta-banner {
  background: linear-gradient(135deg, var(--navy), var(--navy-3));
  border-radius: 20px; padding: 44px; color: #fff; display: flex; align-items: center;
  justify-content: space-between; gap: 24px; flex-wrap: wrap;
  box-shadow: 0 20px 50px rgba(11,31,58,.25);
}
.cta-banner h2 { font-size: 28px; }
.cta-banner p { color: #C7D4E6; margin-top: 8px; }

/* ---------------- 表单 / 注册 ---------------- */
.auth-wrap { max-width: 520px; margin: 48px auto; }
.auth-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 34px; }
.auth-tabs { display: flex; gap: 8px; background: var(--bg-soft); padding: 5px; border-radius: 12px; margin-bottom: 24px; }
.auth-tabs button { flex: 1; padding: 10px; border-radius: 9px; font-weight: 600; color: var(--muted); transition: .18s; }
.auth-tabs button.active { background: #fff; color: var(--navy); box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field-block { margin-bottom: 16px; }
.field-block label { display: block; font-size: 14px; color: var(--text-2); margin-bottom: 7px; font-weight: 600; }
.field-block label .req { color: #E11D48; margin-left: 2px; }
.field-block input, .field-block select, .field-block textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; font-size: 15px;
  color: var(--text); background: #fff; transition: .15s;
}
.field-block input:focus, .field-block select:focus, .field-block textarea:focus {
  outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.field-block textarea { resize: vertical; min-height: 90px; }
.check-line { display: flex; gap: 8px; align-items: flex-start; font-size: 13px; color: var(--muted); margin: 6px 0 18px; }
.check-line input { margin-top: 3px; }

.note { background: #FFF7ED; border: 1px solid #FED7AA; color: #9A3412; border-radius: 10px; padding: 12px 14px; font-size: 13px; margin-bottom: 18px; }
.ok-box { display: none; background: #ECFDF5; border: 1px solid #A7F3D0; color: #065F46; border-radius: 10px; padding: 14px; font-size: 14px; margin-bottom: 18px; }

/* ---------------- 弹窗 ---------------- */
.modal-mask { position: fixed; inset: 0; background: rgba(11,31,58,.55); backdrop-filter: blur(3px);
  display: none; align-items: center; justify-content: center; z-index: 100; padding: 20px; }
.modal-mask.show { display: flex; }
.modal { background: #fff; border-radius: 16px; width: 100%; max-width: 560px; max-height: 92vh; overflow: auto; box-shadow: var(--shadow); }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; border-bottom: 1px solid var(--line); }
.modal-head h3 { font-size: 19px; color: var(--navy); }
.modal-head .x { font-size: 24px; color: var(--muted); line-height: 1; }
.modal-body { padding: 22px 24px; }
.modal-foot { padding: 16px 24px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; gap: 10px; }

/* ---------------- 页脚 ---------------- */
.footer { background: var(--navy); color: #AEBFD4; padding: 48px 0 26px; margin-top: 40px; }
.footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer a { color: #AEBFD4; font-size: 14px; display: block; padding: 4px 0; }
.footer a:hover { color: #fff; }
.footer .about p { font-size: 14px; margin-top: 12px; max-width: 320px; }
.footer .bar { border-top: 1px solid rgba(255,255,255,.1); margin-top: 34px; padding-top: 18px; font-size: 13px; color: #8597B0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 980px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stats .stat:nth-child(2) { border-right: none; }
  .footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open { display: flex; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; background: var(--navy-2); padding: 12px 20px; gap: 4px; }
  .hero h1 { font-size: 32px; }
  .hero-search { grid-template-columns: 1fr; }
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cta-banner { padding: 28px; }
  .footer .cols { grid-template-columns: 1fr; }
}