/* ============================================================
   直快呼官网 - 公共样式
   ============================================================ */
:root {
  --primary: #5a4fe8;
  --primary-2: #4338ca;
  --primary-3: #8b85f2;
  --primary-light: #f0efff;
  --primary-gradient: linear-gradient(135deg, #5a4fe8 0%, #8b5cf6 100%);
  --accent: #7c3aed;
  --accent-gradient: linear-gradient(135deg, #7c3aed 0%, #a78bfa 100%);
  --green: #16a34a;
  --red: #e5484d;
  --text: #1a2233;
  --text-2: #4d5a75;
  --text-3: #8a93a8;
  --bg: #ffffff;
  --bg-2: #f7f6ff;
  --bg-3: #f8fafd;
  --border: #e8e7f5;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(35, 25, 110, .06);
  --shadow: 0 8px 30px rgba(35, 25, 110, .10);
  --shadow-lg: 0 16px 48px rgba(35, 25, 110, .16);
  --header-h: 72px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 20px); -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { vertical-align: middle; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
button { cursor: pointer; background: none; }

::selection { background: rgba(90, 79, 232, .18); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------------- 图标 ---------------- */
.ico { display: inline-flex; width: 1em; height: 1em; flex: none; }
.ico svg { width: 100%; height: 100%; display: block; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ---------------- 区块 ---------------- */
.section { padding: 88px 0; }
.section-gray { background: var(--bg-2); }
.section-dark { background: #0c1b4d; color: #fff; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .kicker {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; color: var(--primary);
  background: var(--primary-light); border-radius: 999px;
  padding: 5px 14px; margin-bottom: 16px;
}
.section-head h2 { font-size: 34px; line-height: 1.35; font-weight: 700; letter-spacing: .5px; }
.section-head p { color: var(--text-2); margin-top: 14px; font-size: 16px; }
.section-dark .section-head h2 { color: #fff; }
.section-dark .section-head p { color: rgba(255, 255, 255, .72); }
.section-dark .section-head .kicker { background: rgba(255, 255, 255, .12); color: #9db8ff; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 0 26px; height: 44px; border-radius: 999px;
  font-size: 15px; font-weight: 600; line-height: 1;
  transition: all .25s ease; white-space: nowrap; user-select: none;
}
.btn .ico { font-size: 17px; }
.btn-primary { background: var(--primary-gradient); color: #fff; box-shadow: 0 6px 18px rgba(90, 79, 232, .32); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(90, 79, 232, .42); }
.btn-accent { background: var(--accent-gradient); color: #fff; box-shadow: 0 6px 18px rgba(124, 58, 237, .35); }
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(124, 58, 237, .45); }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-ghost { color: var(--text-2); }
.btn-ghost:hover { color: var(--primary); }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0, 0, 0, .18); }
.btn-lg { height: 52px; padding: 0 36px; font-size: 16px; }
.btn-sm { height: 36px; padding: 0 18px; font-size: 13px; }
.btn-block { width: 100%; }

/* ---------------- 头部导航 ---------------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255, 255, 255, .92); backdrop-filter: blur(12px);
  transition: box-shadow .3s ease;
}
.site-header.scrolled { box-shadow: 0 2px 16px rgba(35, 25, 110, .10); }
.header-inner { display: flex; align-items: center; height: var(--header-h); gap: 36px; }
.logo { display: flex; align-items: center; gap: 12px; flex: none; }
.logo-mark {
  width: 48px; height: 48px; border-radius: 13px; flex: none;
  background: var(--primary-gradient); color: #fff;
  display: inline-flex; align-items: center; justify-content: center; font-size: 26px;
  box-shadow: 0 4px 12px rgba(90, 79, 232, .35);
}
.logo-mark-img { background: #fff; overflow: hidden; box-shadow: 0 4px 12px rgba(35, 25, 110, .18); }
.logo-mark-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.logo-text { font-size: 25px; font-weight: 800; letter-spacing: 1px; }
.logo-text small { display: block; font-size: 11px; font-weight: 500; color: var(--text-3); letter-spacing: 2.6px; line-height: 1; }

.main-nav { display: flex; align-items: center; gap: 4px; flex: 1; }
.main-nav > li { position: relative; }
.main-nav > li > a {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 8px 16px; font-size: 15px; font-weight: 500; color: var(--text-2);
  border-radius: 8px; transition: color .2s;
}
.main-nav > li > a:hover, .main-nav > li.active > a { color: var(--primary); }
.main-nav > li > a .ico { font-size: 14px; transition: transform .2s; color: var(--text-3); }
.main-nav > li:hover > a .ico { transform: rotate(180deg); color: var(--primary); }

/* 下拉菜单（普通） */
.dropdown {
  position: absolute; top: calc(100% + 14px); left: 50%; transform: translateX(-50%) translateY(8px);
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg);
  padding: 10px; min-width: 200px; opacity: 0; visibility: hidden;
  transition: all .22s ease; z-index: 50;
}
.main-nav > li:hover .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown::before { content: ""; position: absolute; top: -14px; left: 0; right: 0; height: 14px; }
.dropdown a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-radius: 8px; font-size: 14px; color: var(--text-2); white-space: nowrap;
}
.dropdown a:hover { background: var(--primary-light); color: var(--primary); }
.dropdown a .ico { color: var(--primary); font-size: 16px; }

/* 大型菜单 */
.main-nav > li.mega-wrap { position: static; }
.mega-menu {
  position: absolute; top: 100%; left: 0; right: 0;
  background: #fff; box-shadow: var(--shadow-lg); border-top: 1px solid var(--border);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all .22s ease; z-index: 60; padding: 34px 0 38px;
}
.mega-wrap:hover .mega-menu,
.mega-menu.open { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-menu::before { content: ""; position: absolute; top: -16px; left: 0; right: 0; height: 16px; }
.mega-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; }
.mega-col h4 {
  display: flex; align-items: center; gap: 10px;
  font-size: 15px; font-weight: 700; margin-bottom: 16px; color: var(--text);
}
.mega-col h4 .ico { font-size: 19px; color: #fff; width: 34px; height: 34px; padding: 7px; border-radius: 9px; background: var(--primary-gradient); }
.mega-col a {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 9px 12px; border-radius: 8px; font-size: 14px; color: var(--text-2);
}
.mega-col a .ico { font-size: 13px; color: transparent; transition: all .2s; }
.mega-col a:hover { background: var(--primary-light); color: var(--primary); }
.mega-col a:hover .ico { color: var(--primary); transform: translateX(3px); }
.mega-foot {
  margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; gap: 16px;
}

.header-actions { display: flex; align-items: center; gap: 12px; flex: none; }

/* 移动端菜单按钮 */
.menu-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; color: var(--text); font-size: 24px; align-items: center; justify-content: center; }
.mobile-menu {
  display: none; position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0;
  background: #fff; z-index: 999; overflow-y: auto; padding: 12px 20px 40px;
}
.mobile-menu.open { display: block; }
.mobile-menu > li { border-bottom: 1px solid var(--border); }
.mobile-menu > li > a, .mobile-acc-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 4px; font-size: 16px; font-weight: 600;
}
.mobile-acc-head .ico { font-size: 16px; color: var(--text-3); transition: transform .2s; }
.mobile-acc-item.open .mobile-acc-head .ico { transform: rotate(180deg); }
.mobile-acc-body { display: none; padding: 4px 4px 14px; }
.mobile-acc-item.open .mobile-acc-body { display: block; }
.mobile-acc-body a { display: block; padding: 9px 0 9px 14px; font-size: 14px; color: var(--text-2); font-weight: 400; }
.mobile-menu .mobile-cta { display: flex; gap: 12px; margin-top: 22px; }
.mobile-menu .mobile-cta .btn { flex: 1; }

/* ---------------- 内页横幅 ---------------- */
.page-banner {
  position: relative; padding: calc(var(--header-h) + 64px) 0 64px;
  background: radial-gradient(1200px 400px at 70% -10%, rgba(92, 128, 255, .55), transparent 60%), linear-gradient(135deg, #101e52 0%, #4038c7 60%, #5a4fe8 100%);
  color: #fff; overflow: hidden;
}
.page-banner .container { position: relative; z-index: 1; }
.page-banner h1 { font-size: 38px; font-weight: 800; letter-spacing: 1px; }
.page-banner .sub { margin-top: 14px; font-size: 16px; color: rgba(255, 255, 255, .78); max-width: 640px; }
.page-banner .banner-cta { margin-top: 28px; display: flex; gap: 14px; flex-wrap: wrap; }
.breadcrumb { font-size: 13px; color: rgba(255, 255, 255, .6); margin-top: 26px; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { margin: 0 8px; }

/* ---------------- 卡片组件 ---------------- */
.card {
  background: #fff; border-radius: var(--radius); border: 1px solid var(--border);
  padding: 30px 26px; transition: all .25s ease;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }

.icon-card .card-icon {
  width: 52px; height: 52px; border-radius: 13px; font-size: 25px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--primary-light); color: var(--primary); margin-bottom: 18px;
}
.icon-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.icon-card p { font-size: 14px; color: var(--text-2); }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* 功能清单 */
.check-list li { display: flex; gap: 10px; align-items: flex-start; padding: 7px 0; font-size: 15px; color: var(--text-2); }
.check-list li .ico { color: var(--green); font-size: 18px; margin-top: 4px; flex: none; }
.check-list li b { color: var(--text); font-weight: 600; }

/* ---------------- Tabs ---------------- */
.tabs-nav { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-bottom: 48px; }
.tab-btn {
  padding: 10px 26px; border-radius: 999px; font-size: 15px; font-weight: 600;
  color: var(--text-2); background: #fff; border: 1px solid var(--border); transition: all .2s;
}
.tab-btn:hover { color: var(--primary); border-color: var(--primary-3); }
.tab-btn.active { background: var(--primary-gradient); color: #fff; border-color: transparent; box-shadow: 0 6px 16px rgba(90, 79, 232, .3); }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn .35s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ---------------- 轮播 ---------------- */
.carousel { position: relative; }
.carousel-viewport { overflow: hidden; }
.carousel-track { display: flex; transition: transform .5s ease; }
.carousel-item { flex: 0 0 100%; }
.carousel-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(255, 255, 255, .9); box-shadow: var(--shadow);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-2); font-size: 20px; transition: all .2s;
}
.carousel-arrow:hover { color: var(--primary); background: #fff; }
.carousel-arrow.prev { left: 12px; }
.carousel-arrow.next { right: 12px; }
.carousel-dots { display: flex; justify-content: center; gap: 8px; margin-top: 24px; }
.carousel-dots button { width: 9px; height: 9px; border-radius: 999px; background: #c8d4f2; transition: all .25s; }
.carousel-dots button.active { width: 26px; background: var(--primary); }

/* ---------------- 手风琴 ---------------- */
.accordion { border: 1px solid var(--border); border-radius: var(--radius); background: #fff; overflow: hidden; }
.accordion-item + .accordion-item { border-top: 1px solid var(--border); }
.accordion-head {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 20px 24px; font-size: 16px; font-weight: 600; text-align: left; color: var(--text);
}
.accordion-head .ico { font-size: 18px; color: var(--text-3); transition: transform .25s; flex: none; }
.accordion-item.open .accordion-head .ico { transform: rotate(45deg); color: var(--primary); }
.accordion-body { display: none; padding: 0 24px 20px; color: var(--text-2); font-size: 14.5px; }
.accordion-item.open .accordion-body { display: block; animation: fadeIn .3s ease; }

/* ---------------- 弹窗 ---------------- */
.modal { position: fixed; inset: 0; z-index: 2000; display: none; align-items: center; justify-content: center; padding: 20px; }
.modal.open { display: flex; }
.modal-overlay { position: absolute; inset: 0; background: rgba(13, 25, 60, .55); backdrop-filter: blur(4px); animation: fadeIn .25s; }
.modal-dialog {
  position: relative; background: #fff; border-radius: 18px; width: 100%; max-width: 460px;
  box-shadow: var(--shadow-lg); animation: modalIn .3s ease; max-height: 90vh; overflow-y: auto;
}
@keyframes modalIn { from { opacity: 0; transform: translateY(24px) scale(.97); } to { opacity: 1; transform: none; } }
.modal-close { position: absolute; top: 14px; right: 14px; width: 34px; height: 34px; border-radius: 50%; color: var(--text-3); font-size: 18px; display: flex; align-items: center; justify-content: center; }
.modal-close:hover { background: var(--bg-2); color: var(--text); }
.modal-head { padding: 30px 30px 0; }
.modal-head h3 { font-size: 21px; font-weight: 800; }
.modal-head p { font-size: 13.5px; color: var(--text-3); margin-top: 6px; }
.modal-body { padding: 24px 30px 30px; }

/* 弹窗内 tab（登录/注册） */
.auth-tabs { display: flex; gap: 26px; border-bottom: 1px solid var(--border); margin-bottom: 22px; }
.auth-tabs button { padding: 12px 2px; font-size: 16px; font-weight: 600; color: var(--text-3); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.auth-tabs button.active { color: var(--primary); border-color: var(--primary); }

/* ---------------- 表单 ---------------- */
.form-field { margin-bottom: 16px; }
.form-field label { display: block; font-size: 13.5px; font-weight: 600; color: var(--text-2); margin-bottom: 7px; }
.form-field label em { color: var(--red); font-style: normal; margin-left: 2px; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; height: 46px; border: 1px solid var(--border); border-radius: 10px;
  padding: 0 14px; background: var(--bg-3); transition: all .2s; color: var(--text);
}
.form-field textarea { height: auto; min-height: 96px; padding: 12px 14px; resize: vertical; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(90, 79, 232, .12); }
.form-field.has-error input, .form-field.has-error select, .form-field.has-error textarea { border-color: var(--red); background: #fff5f5; }
.error-msg { display: none; font-size: 12.5px; color: var(--red); margin-top: 5px; }
.form-field.has-error .error-msg { display: block; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.form-agree { display: flex; gap: 8px; align-items: flex-start; font-size: 12.5px; color: var(--text-3); margin: 4px 0 16px; }
.form-agree a { color: var(--primary); }
.form-success { text-align: center; padding: 26px 10px 8px; }
.form-success .ok-icon {
  width: 66px; height: 66px; margin: 0 auto 18px; border-radius: 50%;
  background: #e8f8ee; color: var(--green); font-size: 32px;
  display: flex; align-items: center; justify-content: center;
}
.form-success h4 { font-size: 19px; margin-bottom: 8px; }
.form-success p { font-size: 14px; color: var(--text-2); }
.vcode-row { display: flex; gap: 10px; }
.vcode-row input { flex: 1; }
.vcode-btn { flex: none; width: 118px; height: 46px; border-radius: 10px; background: var(--primary-light); color: var(--primary); font-size: 13.5px; font-weight: 600; }
.vcode-btn:disabled { color: var(--text-3); cursor: not-allowed; }

/* ---------------- Toast ---------------- */
.toast {
  position: fixed; top: calc(var(--header-h) + 18px); left: 50%; transform: translateX(-50%) translateY(-16px);
  background: rgba(23, 33, 66, .92); color: #fff; font-size: 14px;
  padding: 11px 22px; border-radius: 999px; z-index: 3000; opacity: 0;
  transition: all .3s ease; pointer-events: none; box-shadow: var(--shadow-lg);
  display: flex; align-items: center; gap: 8px; max-width: 86vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast .ico { color: #6ee7a0; }

/* ---------------- 回到顶部 / 侧边工具栏 ---------------- */
.float-bar { position: fixed; right: 22px; bottom: 88px; z-index: 900; display: flex; flex-direction: column; gap: 10px; }
.float-btn {
  width: 48px; height: 48px; border-radius: 13px; background: #fff;
  box-shadow: var(--shadow); color: var(--text-2); font-size: 21px;
  display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 1px;
  transition: all .2s;
}
.float-btn span { font-size: 10px; line-height: 1; transform: scale(.92); }
.float-btn:hover { color: var(--primary); transform: translateY(-3px); }
.float-btn.consult { background: var(--accent-gradient); color: #fff; }
#backTop { opacity: 0; visibility: hidden; transition: all .3s; }
#backTop.show { opacity: 1; visibility: visible; }

/* ---------------- 页脚 ---------------- */
.site-footer { background: #16124a; color: rgba(255, 255, 255, .68); padding: 66px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 40px; padding-bottom: 46px; }
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand .logo-text { color: #fff; }
.footer-brand p { font-size: 13.5px; line-height: 1.8; }
.footer-brand .footer-contact { margin-top: 18px; display: flex; flex-direction: column; gap: 9px; font-size: 13.5px; }
.footer-brand .footer-contact .ico { color: var(--primary-3); font-size: 16px; margin-right: 7px; }
.footer-col h4 { color: #fff; font-size: 15.5px; font-weight: 700; margin-bottom: 18px; }
.footer-col li { margin-bottom: 11px; }
.footer-col a { color: rgba(255, 255, 255, .68); font-size: 13.5px; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-qrcode { margin-top: 4px; text-align: left; }
.footer-qrcode .qr-box {
  width: 110px; height: 110px; border-radius: 12px; background: #fff;
  display: flex; align-items: center; justify-content: center; margin-bottom: 8px;
}
.footer-qrcode small { font-size: 12px; color: rgba(255, 255, 255, .5); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: 20px 0; }
.footer-bottom .container { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 12.5px; color: rgba(255, 255, 255, .42); }
.footer-bottom a { color: rgba(255, 255, 255, .42); }
.footer-bottom a:hover { color: #fff; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }

/* ---------------- 动效 ---------------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal-left { opacity: 0; transform: translateX(-36px); transition: opacity .7s ease, transform .7s ease; }
.reveal-right { opacity: 0; transform: translateX(36px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in, .reveal-left.in, .reveal-right.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-left, .reveal-right { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------------- 分页 ---------------- */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 44px; }
.pagination button {
  min-width: 38px; height: 38px; padding: 0 12px; border-radius: 9px;
  border: 1px solid var(--border); background: #fff; color: var(--text-2); font-size: 14px;
}
.pagination button:hover { border-color: var(--primary); color: var(--primary); }
.pagination button.active { background: var(--primary-gradient); color: #fff; border-color: transparent; }
.pagination button:disabled { opacity: .4; cursor: not-allowed; }

/* ---------------- 筛选 chips ---------------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 40px; }
.filter-chip { padding: 8px 20px; border-radius: 999px; background: #fff; border: 1px solid var(--border); font-size: 14px; color: var(--text-2); transition: all .2s; }
.filter-chip:hover { color: var(--primary); border-color: var(--primary-3); }
.filter-chip.active { background: var(--primary-gradient); color: #fff; border-color: transparent; }

/* ---------------- 标签 ---------------- */
.tag { display: inline-flex; align-items: center; padding: 3px 11px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.tag-blue { background: var(--primary-light); color: var(--primary); }
.tag-orange { background: #f3efff; color: #6d28d9; }
.tag-green { background: #e8f8ee; color: var(--green); }

/* ---------------- 工具类 ---------------- */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; } .mt-32 { margin-top: 32px; } .mt-48 { margin-top: 48px; }
.mb-16 { margin-bottom: 16px; } .mb-24 { margin-bottom: 24px; } .mb-32 { margin-bottom: 32px; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-12 { gap: 12px; } .gap-16 { gap: 16px; } .gap-24 { gap: 24px; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .main-nav, .header-actions .btn-ghost { display: none; }
  .header-actions { margin-left: auto; }
  .menu-toggle { display: inline-flex; }
  .mega-menu { display: none; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
}
@media (max-width: 640px) {
  :root { --header-h: 60px; }
  .logo-mark { width: 40px; height: 40px; border-radius: 11px; font-size: 22px; }
  .logo-text { font-size: 21px; }
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 26px; }
  .page-banner { padding: calc(var(--header-h) + 40px) 0 46px; }
  .page-banner h1 { font-size: 27px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .float-bar { right: 14px; bottom: 70px; }
  .float-btn { width: 44px; height: 44px; font-size: 19px; }
  .btn-lg { height: 46px; padding: 0 26px; }
  .carousel-arrow { display: none; }
}