/* ============================================================
   SeekSoon 速寻 · 跨境电商物流查询
   全局样式 — 部署目标: Cloudflare Pages
   ============================================================ */

:root {
  --c-primary: #2563eb;
  --c-primary-dark: #1e40af;
  --c-primary-deep: #0f2b5b;
  --c-primary-light: #dbeafe;
  --c-bg: #f4f7fc;
  --c-card: #ffffff;
  --c-text: #1e293b;
  --c-text-sub: #64748b;
  --c-text-faint: #94a3b8;
  --c-border: #e2e8f0;
  --c-success: #16a34a;
  --c-success-bg: #dcfce7;
  --c-warn: #d97706;
  --c-warn-bg: #fef3c7;
  --c-danger: #dc2626;
  --c-danger-bg: #fee2e2;
  --c-info: #0891b2;
  --c-info-bg: #cffafe;
  --radius: 14px;
  --shadow-sm: 0 1px 3px rgba(15, 43, 91, .07);
  --shadow-md: 0 6px 24px rgba(15, 43, 91, .10);
  --shadow-lg: 0 16px 48px rgba(15, 43, 91, .16);
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--c-primary); text-decoration: none; }
a:hover { color: var(--c-primary-dark); }
img { max-width: 100%; display: block; }

.container { width: min(1160px, 92%); margin: 0 auto; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--c-border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 21px; color: var(--c-primary-deep); letter-spacing: .5px; }
.logo svg { flex: 0 0 auto; }
.logo .zh { font-size: 13px; font-weight: 600; color: var(--c-text-faint); margin-left: 2px; align-self: flex-end; padding-bottom: 3px; }
.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; }
.nav-links a { color: var(--c-text-sub); font-size: 15px; font-weight: 500; padding: 6px 2px; border-bottom: 2px solid transparent; transition: .2s; }
.nav-links a:hover, .nav-links a.active { color: var(--c-primary-deep); border-bottom-color: var(--c-primary); }
.nav-cta {
  display: inline-flex; align-items: center; gap: 7px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark));
  color: #fff !important; font-weight: 600; font-size: 14px;
  padding: 9px 20px; border-radius: 999px; box-shadow: var(--shadow-sm);
  transition: .2s;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle svg { display: block; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1000px 480px at 85% -10%, rgba(37, 99, 235, .14), transparent 60%),
    radial-gradient(700px 380px at 5% 110%, rgba(8, 145, 178, .10), transparent 60%),
    linear-gradient(180deg, #f8faff 0%, var(--c-bg) 100%);
  padding: 78px 0 64px;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: #eef4ff; color: var(--c-primary-dark);
  font-size: 13px; font-weight: 600;
  border: 1px solid #d4e2ff; border-radius: 999px;
  padding: 5px 14px; margin-bottom: 22px;
}
.hero-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--c-success); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
.hero h1 {
  font-size: clamp(30px, 4.2vw, 46px);
  line-height: 1.25; font-weight: 800; color: var(--c-primary-deep);
  letter-spacing: -.5px; margin-bottom: 16px;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--c-primary), #06b6d4);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { color: var(--c-text-sub); font-size: 17px; max-width: 480px; margin-bottom: 34px; }

/* 搜索框 */
.search-box { display: flex; gap: 10px; }
.search-input-wrap {
  flex: 1; display: flex; align-items: center; gap: 12px;
  background: #fff; border: 2px solid var(--c-border); border-radius: 14px;
  padding: 0 18px; box-shadow: var(--shadow-sm);
  transition: .2s;
}
.search-input-wrap:focus-within { border-color: var(--c-primary); box-shadow: 0 0 0 4px rgba(37, 99, 235, .12); }
.search-input-wrap svg { flex: 0 0 auto; color: var(--c-text-faint); }
.search-input-wrap input {
  flex: 1; border: none; outline: none; background: transparent;
  font-size: 17px; font-family: var(--font); color: var(--c-text);
  padding: 16px 0; min-width: 0; letter-spacing: .5px;
}
.search-input-wrap input::placeholder { color: var(--c-text-faint); letter-spacing: 0; }
.search-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark));
  color: #fff; border: none; cursor: pointer;
  font-family: var(--font); font-size: 16px; font-weight: 700;
  padding: 0 30px; border-radius: 14px; box-shadow: var(--shadow-md);
  transition: .2s; white-space: nowrap;
}
.search-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.search-btn:active { transform: translateY(0); }

.demo-chips { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 18px; }
.demo-chips .tip { font-size: 13px; color: var(--c-text-faint); }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: #fff; border: 1px dashed #b9cdf3; color: var(--c-primary-dark);
  font-size: 13px; font-weight: 500; padding: 5px 13px; border-radius: 999px;
  cursor: pointer; transition: .2s; font-family: var(--font);
}
.chip:hover { background: #eef4ff; border-style: solid; }
.chip .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }

/* 航线图 */
.hero-visual { position: relative; }
.route-map {
  width: 100%; height: auto; display: block;
  filter: drop-shadow(0 20px 40px rgba(15, 43, 91, .12));
}
.flight-dot { animation: pulse 2.2s infinite; }
.flight-dot.d2 { animation-delay: .7s; }
.flight-dot.d3 { animation-delay: 1.3s; }

/* ---------- 统计条 ---------- */
.stats-band { background: var(--c-primary-deep); padding: 34px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat-num { font-size: 30px; font-weight: 800; color: #fff; letter-spacing: -.5px; }
.stat-num .unit { font-size: 16px; font-weight: 600; color: #93b4f8; margin-left: 2px; }
.stat-label { font-size: 14px; color: #9db6ea; margin-top: 4px; }

/* ---------- 区块通用 ---------- */
.section { padding: 72px 0; }
.section-alt { background: #fff; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-tag {
  display: inline-block; font-size: 13px; font-weight: 700; color: var(--c-primary);
  background: var(--c-primary-light); border-radius: 999px; padding: 4px 14px;
  letter-spacing: 1px; margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; color: var(--c-primary-deep); letter-spacing: -.3px; }
.section-head p { color: var(--c-text-sub); margin-top: 12px; font-size: 16px; }

/* ---------- 功能卡片 ---------- */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature-card {
  background: var(--c-card); border: 1px solid var(--c-border);
  border-radius: var(--radius); padding: 28px 24px;
  box-shadow: var(--shadow-sm); transition: .25s;
}
.feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: #c7d9fb; }
.feature-icon {
  width: 50px; height: 50px; border-radius: 13px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #eaf1ff, #ddecff);
  color: var(--c-primary); margin-bottom: 18px;
}
.feature-card h3 { font-size: 17px; font-weight: 700; color: var(--c-primary-deep); margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--c-text-sub); line-height: 1.75; }

/* ---------- 物流商墙 ---------- */
.carriers-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.carrier-tile {
  background: var(--c-card); border: 1px solid var(--c-border); border-radius: 12px;
  padding: 18px 10px; text-align: center; transition: .2s; box-shadow: var(--shadow-sm);
}
.carrier-tile:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.carrier-logo {
  height: 34px; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 16px; letter-spacing: .5px;
}
.carrier-name { font-size: 12px; color: var(--c-text-faint); margin-top: 6px; }

/* ---------- 指南精选卡片 ---------- */
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.guide-card {
  position: relative; background: var(--c-card); border: 1px solid var(--c-border);
  border-radius: var(--radius); overflow: hidden; transition: .25s;
  box-shadow: var(--shadow-sm); display: block; color: inherit;
}
.guide-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.guide-banner { height: 8px; }
.guide-body { padding: 24px 22px 26px; }
.guide-body h3 { font-size: 17px; font-weight: 700; color: var(--c-primary-deep); margin-bottom: 10px; }
.guide-body p { font-size: 14px; color: var(--c-text-sub); margin-bottom: 14px; }
.guide-body .more { font-size: 14px; font-weight: 600; color: var(--c-primary); }
.guide-body .more::after { content: " →"; transition: .2s; }
.guide-card:hover .more::after { margin-left: 4px; }

/* ---------- 页面页头 ---------- */
.page-head {
  background: linear-gradient(135deg, #f2f6ff 0%, #e8f0fe 100%);
  border-bottom: 1px solid var(--c-border);
  padding: 54px 0 44px; text-align: center;
}
.page-head h1 { font-size: clamp(26px, 3.4vw, 36px); font-weight: 800; color: var(--c-primary-deep); letter-spacing: -.3px; }
.page-head .crumb { font-size: 14px; color: var(--c-text-faint); margin-bottom: 14px; }
.page-head .crumb a { color: var(--c-text-sub); }
.page-head p { color: var(--c-text-sub); margin-top: 12px; max-width: 620px; margin-left: auto; margin-right: auto; }

/* ---------- 查询页 ---------- */
.track-shell { max-width: 880px; margin: 0 auto; }
.result-card {
  background: var(--c-card); border: 1px solid var(--c-border); border-radius: var(--radius);
  box-shadow: var(--shadow-md); overflow: hidden;
}
.result-head {
  background: linear-gradient(135deg, var(--c-primary-deep), #1d4ed8);
  color: #fff; padding: 26px 30px;
}
.result-head .no-line { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 6px; }
.result-head .tracking-no {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 24px; font-weight: 700; letter-spacing: 1px;
}
.status-badge {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 13px; font-weight: 700; border-radius: 999px; padding: 5px 14px;
}
.status-badge .sdot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.st-delivered { background: var(--c-success-bg); color: var(--c-success); }
.st-transit { background: #dbeafe; color: #1d4ed8; }
.st-customs { background: var(--c-warn-bg); color: var(--c-warn); }
.st-exception { background: var(--c-danger-bg); color: var(--c-danger); }
.st-pending { background: #e2e8f0; color: var(--c-text-sub); }
.demo-flag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 600; color: #ffd166;
  background: rgba(255, 255, 255, .14); border: 1px dashed rgba(255, 255, 255, .45);
  padding: 4px 12px; border-radius: 999px; margin-left: auto;
}
.result-head .carrier-line { color: #c7d8fb; font-size: 14px; }
.route-summary {
  display: grid; grid-template-columns: 1fr 60px 1fr; align-items: center;
  background: #fff; padding: 22px 30px; border-bottom: 1px solid var(--c-border);
}
.route-endpoint .flag { font-size: 24px; line-height: 1; }
.route-endpoint .loc { font-weight: 700; color: var(--c-primary-deep); font-size: 16px; margin-top: 6px; }
.route-endpoint .sub { font-size: 12.5px; color: var(--c-text-faint); }
.route-arrow { text-align: center; color: var(--c-primary); position: relative; }
.route-arrow .days { font-size: 11px; color: var(--c-text-faint); white-space: nowrap; }
.meta-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: #f8fafc; border-bottom: 1px solid var(--c-border);
}
.meta-cell { padding: 16px 10px; text-align: center; }
.meta-cell .k { font-size: 12px; color: var(--c-text-faint); }
.meta-cell .v { font-size: 15px; font-weight: 700; color: var(--c-text); margin-top: 3px; }

/* 时间线 */
.timeline { padding: 30px 30px 34px; }
.tl-item { display: flex; gap: 18px; position: relative; padding-bottom: 26px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: 19px; top: 42px; bottom: 0;
  width: 2px; background: var(--c-border);
}
.tl-item:last-child::before { display: none; }
.tl-item.current .tl-dot { box-shadow: 0 0 0 5px rgba(37, 99, 235, .16); }
.tl-dot {
  flex: 0 0 40px; width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: #f1f5f9; color: var(--c-text-faint); z-index: 1;
  border: 2px solid #e2e8f0;
}
.tl-item.current .tl-dot { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }
.tl-item.ev-delivered .tl-dot { background: var(--c-success); border-color: var(--c-success); color: #fff; }
.tl-item.ev-customs_hold .tl-dot, .tl-item.ev-exception .tl-dot { background: var(--c-danger); border-color: var(--c-danger); color: #fff; }
.tl-item.ev-customs .tl-dot { background: var(--c-warn); border-color: var(--c-warn); color: #fff; }
.tl-body { flex: 1; min-width: 0; padding-top: 2px; }
.tl-text { font-weight: 600; font-size: 15px; color: var(--c-text); }
.tl-item.current .tl-text { color: var(--c-primary-dark); }
.tl-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 5px; font-size: 13px; color: var(--c-text-faint); }
.tl-raw {
  margin-top: 8px; font-size: 12.5px; color: var(--c-text-faint);
  background: #f8fafc; border-left: 3px solid var(--c-border);
  padding: 6px 12px; border-radius: 0 8px 8px 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.tl-alert {
  margin-top: 10px; background: var(--c-warn-bg); border: 1px solid #fde68a;
  color: #92400e; font-size: 13.5px; padding: 10px 14px; border-radius: 10px;
}
.tl-alert.danger { background: var(--c-danger-bg); border-color: #fecaca; color: #991b1b; }

/* 空状态 / 错误 */
.empty-state { text-align: center; padding: 70px 24px; }
.empty-state .icon { color: #cbd5e1; margin-bottom: 18px; }
.empty-state h3 { font-size: 19px; color: var(--c-primary-deep); margin-bottom: 10px; }
.empty-state p { color: var(--c-text-sub); font-size: 15px; max-width: 460px; margin: 0 auto 22px; }
.empty-state ul { text-align: left; max-width: 420px; margin: 0 auto; color: var(--c-text-sub); font-size: 14.5px; list-style: none; }
.empty-state ul li { padding: 5px 0 5px 24px; position: relative; }
.empty-state ul li::before { content: "•"; position: absolute; left: 8px; color: var(--c-primary); }

/* 加载骨架 */
.skeleton-line { height: 14px; border-radius: 7px; background: linear-gradient(90deg, #eef2f7 25%, #f8fafc 50%, #eef2f7 75%); background-size: 200% 100%; animation: shimmer 1.3s infinite; margin: 10px 0; }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; background: var(--c-card); border: 1px solid var(--c-border); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
table.data { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 640px; }
table.data th {
  background: #f0f5fd; color: var(--c-primary-deep); font-weight: 700;
  text-align: left; padding: 14px 18px; border-bottom: 2px solid #d9e5f8; white-space: nowrap;
}
table.data td { padding: 13px 18px; border-bottom: 1px solid var(--c-border); vertical-align: top; }
table.data tr:last-child td { border-bottom: none; }
table.data tr:hover td { background: #f8faff; }
.tag-pill { display: inline-block; font-size: 12px; font-weight: 600; border-radius: 6px; padding: 2px 10px; white-space: nowrap; }
.tag-green { background: var(--c-success-bg); color: var(--c-success); }
.tag-amber { background: var(--c-warn-bg); color: var(--c-warn); }
.tag-red { background: var(--c-danger-bg); color: var(--c-danger); }
.tag-blue { background: #dbeafe; color: #1d4ed8; }
.tag-gray { background: #e2e8f0; color: var(--c-text-sub); }

/* ---------- 步骤流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.step-card { background: var(--c-card); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 24px 20px; position: relative; box-shadow: var(--shadow-sm); }
.step-card .num {
  width: 34px; height: 34px; border-radius: 10px; background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark));
  color: #fff; font-weight: 800; font-size: 16px; display: flex; align-items: center; justify-content: center; margin-bottom: 14px;
}
.step-card h3 { font-size: 16px; font-weight: 700; color: var(--c-primary-deep); margin-bottom: 7px; }
.step-card p { font-size: 13.5px; color: var(--c-text-sub); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 800px; margin: 0 auto; }
details.faq {
  background: var(--c-card); border: 1px solid var(--c-border); border-radius: 12px;
  margin-bottom: 14px; box-shadow: var(--shadow-sm); overflow: hidden;
}
details.faq summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 22px; font-weight: 700; font-size: 15.5px; color: var(--c-primary-deep);
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary .chev { flex: 0 0 auto; color: var(--c-text-faint); transition: transform .25s; }
details.faq[open] summary .chev { transform: rotate(180deg); }
details.faq[open] summary { border-bottom: 1px dashed var(--c-border); }
details.faq .faq-body { padding: 18px 22px 22px; color: var(--c-text-sub); font-size: 14.5px; }
details.faq .faq-body p + p { margin-top: 10px; }
details.faq .faq-body strong { color: var(--c-text); }

/* ---------- CTA ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--c-primary-deep) 0%, #1d4ed8 100%);
  border-radius: 20px; padding: 52px 40px; text-align: center; color: #fff;
  position: relative; overflow: hidden;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(500px 200px at 80% 0%, rgba(255,255,255,.12), transparent 60%);
}
.cta-band h2 { font-size: clamp(22px, 3vw, 30px); font-weight: 800; margin-bottom: 12px; position: relative; }
.cta-band p { color: #c9d9fb; font-size: 16px; margin-bottom: 28px; position: relative; }
.cta-band .btn-white {
  position: relative; display: inline-flex; align-items: center; gap: 8px;
  background: #fff; color: var(--c-primary-dark); font-weight: 700; font-size: 16px;
  padding: 13px 34px; border-radius: 999px; box-shadow: var(--shadow-lg); transition: .2s;
}
.cta-band .btn-white:hover { transform: translateY(-2px); }

/* ---------- Footer ---------- */
.footer { background: #0b1e3f; color: #93a8cf; padding: 56px 0 0; margin-top: 72px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer .logo { color: #fff; }
.footer .logo .zh { color: #5f7bb3; }
.footer-about p { font-size: 14px; margin-top: 16px; line-height: 1.8; max-width: 320px; }
.footer h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 10px; }
.footer ul a { color: #93a8cf; font-size: 14px; transition: .2s; }
.footer ul a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #1c3462; padding: 20px 0; font-size: 13px; color: #5f7bb3; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------- 通用按钮 ---------- */
.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  border: 2px solid var(--c-primary); color: var(--c-primary);
  font-weight: 700; font-size: 15px; padding: 11px 26px; border-radius: 999px;
  transition: .2s; background: transparent; cursor: pointer; font-family: var(--font);
}
.btn-outline:hover { background: var(--c-primary); color: #fff; }

/* ---------- 提示条 ---------- */
.notice {
  display: flex; gap: 12px; align-items: flex-start;
  background: #eef4ff; border: 1px solid #d4e2ff; color: #1e40af;
  border-radius: 12px; padding: 14px 18px; font-size: 14px; margin: 0 auto 26px; max-width: 880px;
}
.notice svg { flex: 0 0 auto; margin-top: 2px; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .carriers-grid { grid-template-columns: repeat(4, 1fr); }
  .guide-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .meta-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-links {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--c-border);
    flex-direction: column; align-items: stretch; gap: 0; padding: 8px 5%;
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
  .nav-links li { border-bottom: 1px solid #f1f5f9; }
  .nav-links a { display: block; padding: 13px 4px; border-bottom: none; }
  .nav-links li:last-child { border-bottom: none; }
  .nav-cta { margin: 10px 0; justify-content: center; }
  .nav-toggle { display: block; }
  .search-box { flex-direction: column; }
  .search-btn { padding: 15px 0; }
  .carriers-grid { grid-template-columns: repeat(3, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .timeline { padding: 22px 18px 26px; }
  .result-head { padding: 20px 18px; }
  .route-summary { padding: 18px; }
  .cta-band { padding: 40px 22px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .steps { grid-template-columns: 1fr; }
}