/* =========================================================
   爵朗环球企服 — 前端样式（现代专业版）
   品牌色：爵朗蓝 #003D82 / 琥珀金 #D97706
   ========================================================= */
:root {
  --blue: #003D82;
  --blue-dark: #002855;
  --blue-soft: #EAF1FA;
  --amber: #D97706;
  --amber-soft: #FDF2E3;
  --bg: #F7F9FC;
  --surface: #FFFFFF;
  --border: #E6ECF3;
  --text: #1F2A37;
  --muted: #66758C;
  --shadow-sm: 0 1px 3px rgba(16, 40, 80, .06);
  --shadow: 0 10px 30px rgba(16, 40, 80, .08);
  --shadow-lg: 0 18px 48px rgba(16, 40, 80, .12);
  --radius: 16px;
  --radius-sm: 10px;
  --maxw: 1180px;
  --ease: cubic-bezier(.4, 0, .2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Inter", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--surface);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.container-narrow { max-width: 860px; }

/* ---------- 顶部条 ---------- */
.topbar { background: var(--blue-dark); color: #B7C4D8; font-size: 13px; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; padding: 8px 22px; max-width: var(--maxw); margin: 0 auto; flex-wrap: wrap; gap: 8px; }
.lang-switch { display: flex; align-items: center; gap: 4px; }
.lang-switch > span { margin-right: 4px; color: #93A4BD; }
.lang-switch a { color: #B7C4D8; margin: 0 6px; padding: 2px 4px; border-radius: 6px; transition: .15s; }
.lang-switch a.active { color: #fff; background: rgba(255, 255, 255, .12); }
.lang-switch a:hover { color: #fff; }
.topbar-contact { display: flex; gap: 18px; align-items: center; }
.topbar-contact a { color: #B7C4D8; transition: .15s; }
.topbar-contact a:hover { color: #fff; }

/* ---------- 头部 ---------- */
.site-header { background: rgba(255, 255, 255, .92); backdrop-filter: saturate(180%) blur(10px); border-bottom: 1px solid transparent; position: sticky; top: 0; z-index: 50; transition: box-shadow .25s var(--ease), border-color .25s; }
.site-header.scrolled { box-shadow: var(--shadow-sm); border-color: var(--border); }
.header-inner { display: flex; align-items: center; gap: 26px; padding: 14px 22px; max-width: var(--maxw); margin: 0 auto; }
.logo img { height: 42px; width: auto; }
.main-nav { flex: 1; }
.main-nav ul { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; }
.main-nav a { color: var(--text); font-size: 15px; font-weight: 500; padding: 8px 0; position: relative; transition: color .15s; }
.main-nav a:hover { color: var(--blue); }
.main-nav li.active a { color: var(--blue); }
.main-nav li.active a::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 3px; border-radius: 3px; background: var(--amber); }
.menu-toggle { display: none; background: none; border: 0; font-size: 26px; cursor: pointer; color: var(--blue); }

/* ---------- 按钮 ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 26px; border-radius: 999px; font-size: 15px; font-weight: 600; cursor: pointer; border: 1px solid transparent; transition: transform .15s var(--ease), box-shadow .15s, background .15s; }
.btn-cta { background: linear-gradient(135deg, var(--amber), #B45309); color: #fff; box-shadow: 0 8px 20px rgba(217, 119, 6, .28); }
.btn-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(217, 119, 6, .36); }
.btn-outline { background: transparent; border-color: var(--blue); color: var(--blue); }
.btn-outline:hover { background: var(--blue); color: #fff; transform: translateY(-2px); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background: radial-gradient(1200px 500px at 80% -10%, rgba(217, 119, 6, .22), transparent 60%), linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%); color: #fff; padding: 88px 0 96px; text-align: center; }
.hero::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(rgba(255, 255, 255, .08) 1px, transparent 1px); background-size: 22px 22px; opacity: .5; }
.hero::after { content: ""; position: absolute; right: -120px; bottom: -160px; width: 380px; height: 380px; background: radial-gradient(circle, rgba(217, 119, 6, .35), transparent 70%); filter: blur(10px); }
.hero .container { position: relative; z-index: 1; }
.hero-eyebrow { display: inline-block; font-size: 13px; letter-spacing: 2px; text-transform: uppercase; color: #FFD9A8; border: 1px solid rgba(255, 255, 255, .25); padding: 5px 14px; border-radius: 999px; margin-bottom: 20px; }
.hero h1 { font-size: 44px; margin: 0 0 18px; font-weight: 800; letter-spacing: .5px; }
.hero-sub { font-size: 18px; opacity: .92; max-width: 780px; margin: 0 auto 30px; line-height: 1.8; }
.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-badges { margin-top: 28px; font-size: 14px; opacity: .9; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-badges span { background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .22); padding: 6px 14px; border-radius: 999px; }

/* ---------- 信任数据条 ---------- */
.trust-strip { background: var(--blue-soft); border-bottom: 1px solid var(--border); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 30px 22px; max-width: var(--maxw); margin: 0 auto; text-align: center; }
.trust-item .t-num { font-size: 30px; font-weight: 800; color: var(--blue); line-height: 1.1; }
.trust-item .t-label { font-size: 14px; color: var(--muted); margin-top: 4px; }

/* ---------- 区块 ---------- */
.section { padding: 72px 0; }
.section-alt { background: var(--bg); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 44px; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 1.5px; color: var(--amber); text-transform: uppercase; margin-bottom: 10px; }
.section-title { text-align: center; font-size: 30px; margin: 0 0 12px; color: var(--blue-dark); }
.section-desc { text-align: center; color: var(--muted); font-size: 16px; margin: 0; }

/* ---------- 卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; display: block; transition: transform .2s var(--ease), box-shadow .2s, border-color .2s; position: relative; overflow: hidden; }
.card::before { content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 100%; background: linear-gradient(90deg, var(--blue), var(--amber)); transform: scaleX(0); transform-origin: left; transition: transform .25s var(--ease); }
.card:hover { box-shadow: var(--shadow); transform: translateY(-4px); border-color: #cfe0f3; }
.card:hover::before { transform: scaleX(1); }
.card-icon { font-size: 20px; font-weight: 700; color: var(--blue); background: var(--blue-soft); display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; border-radius: 14px; margin-bottom: 16px; }
.card h3 { margin: 0 0 10px; font-size: 19px; color: var(--blue-dark); }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; line-height: 1.7; }
.card .more { display: inline-block; margin-top: 14px; color: var(--amber); font-size: 14px; font-weight: 600; }
.card-plain { background: var(--surface); }
.card-article img { width: calc(100% + 56px); height: 160px; object-fit: cover; border-radius: 12px 12px 0 0; margin: -28px -28px 16px; }

/* ---------- 步骤 ---------- */
.steps { display: flex; flex-wrap: wrap; gap: 18px; justify-content: center; }
.step { flex: 1; min-width: 160px; text-align: center; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 20px; position: relative; }
.step-num { width: 46px; height: 46px; line-height: 46px; border-radius: 50%; background: linear-gradient(135deg, var(--blue), var(--blue-dark)); color: #fff; font-weight: 700; margin: 0 auto 12px; box-shadow: 0 6px 16px rgba(0, 61, 130, .3); }
.step-label { font-size: 16px; color: var(--blue-dark); font-weight: 600; }

/* ---------- 页头 ---------- */
.page-head { background: linear-gradient(135deg, var(--blue), var(--blue-dark)); color: #fff; padding: 64px 0 56px; text-align: center; position: relative; overflow: hidden; }
.page-head::after { content: ""; position: absolute; right: -80px; top: -120px; width: 300px; height: 300px; background: radial-gradient(circle, rgba(217, 119, 6, .3), transparent 70%); }
.page-head .container { position: relative; z-index: 1; }
.page-head h1 { margin: 0 0 12px; font-size: 34px; font-weight: 800; }
.page-head p { margin: 0 auto; max-width: 760px; opacity: .9; }
.badge-row { margin-top: 20px; display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.badge { background: rgba(255, 255, 255, .14); border: 1px solid rgba(255, 255, 255, .3); padding: 6px 16px; border-radius: 999px; font-size: 13px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 4px 20px; margin-bottom: 14px; transition: box-shadow .2s; }
.faq-item[open] { box-shadow: var(--shadow-sm); }
.faq-item summary { cursor: pointer; font-weight: 600; color: var(--blue-dark); padding: 16px 0; list-style: none; position: relative; padding-right: 28px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 0; top: 14px; font-size: 22px; color: var(--amber); font-weight: 700; transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer { padding: 0 0 16px; color: var(--muted); }

/* ---------- CTA 横幅 ---------- */
.cta-banner { background: radial-gradient(800px 400px at 20% 0%, rgba(217, 119, 6, .25), transparent 60%), linear-gradient(135deg, var(--blue), var(--blue-dark)); color: #fff; padding: 60px 0; text-align: center; }
.cta-inner h2 { margin: 0 0 20px; font-size: 28px; font-weight: 800; }
.cta-inline { text-align: center; margin-top: 28px; }

/* ---------- 内容排版 ---------- */
.service-content, .page-content, .article-content { font-size: 16px; color: var(--text); line-height: 1.85; }
.service-content h3, .page-content h3, .article-content h3 { color: var(--blue); margin-top: 28px; }
.service-content ul, .page-content ul, .article-content ul { padding-left: 22px; }
.service-content li, .page-content li, .article-content li { margin-bottom: 8px; }
.lead { font-size: 18px; color: var(--text); }
.scope-list { list-style: none; padding: 0; }
.scope-list li { padding: 14px 18px; border-left: 3px solid var(--blue); background: var(--blue-soft); margin-bottom: 12px; border-radius: 0 10px 10px 0; }

/* ---------- 博客 ---------- */
.cat-filter { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 34px; }
.cat-filter a { padding: 7px 18px; border: 1px solid var(--border); border-radius: 999px; font-size: 14px; color: var(--muted); transition: .15s; }
.cat-filter a.active, .cat-filter a:hover { background: var(--blue); color: #fff; border-color: var(--blue); }
.article-content .meta, .page-head .meta { color: var(--muted); font-size: 14px; }
.related-title { color: var(--blue); margin-top: 40px; }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 44px; align-items: start; }
.contact-form { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label { display: block; margin-bottom: 18px; font-size: 14px; color: var(--blue-dark); font-weight: 500; }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%; padding: 11px 14px; margin-top: 7px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 15px; font-family: inherit; background: #fff; transition: border-color .15s, box-shadow .15s;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(0, 61, 130, .12); }
.contact-form textarea { resize: vertical; }
.hp { position: absolute; left: -9999px; }
.alert { padding: 13px 18px; border-radius: var(--radius-sm); margin-bottom: 18px; font-size: 14px; }
.alert-success { background: #E7F6EC; color: #1C7A3E; border: 1px solid #B6E2C5; }
.alert-error { background: #FDEAEA; color: #A3322B; border: 1px solid #F3C4C0; }
.contact-info { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; }
.contact-info h3 { margin-top: 0; color: var(--blue); }
.contact-info p { margin: 9px 0; color: var(--muted); }
.contact-info hr { border: 0; border-top: 1px solid var(--border); margin: 18px 0; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--blue-dark); color: #B7C4D8; padding: 56px 0 0; margin-top: 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.footer-grid h4 { color: #fff; margin: 0 0 16px; font-size: 15px; }
.footer-grid p { font-size: 13.5px; margin: 7px 0; line-height: 1.6; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { font-size: 13.5px; margin: 8px 0; }
.footer-grid a { color: #B7C4D8; transition: .15s; }
.footer-grid a:hover { color: #fff; }
.footer-brand img { height: 38px; margin-bottom: 14px; background: #fff; padding: 6px 10px; border-radius: 8px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .12); margin-top: 38px; padding: 18px 0; font-size: 13px; }
.footer-bottom .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.footer-bottom a { color: #B7C4D8; }
.footer-bottom a:hover { color: #fff; }

/* ---------- WhatsApp 浮动 ---------- */
.wa-float { position: fixed; right: 22px; bottom: 24px; width: 56px; height: 56px; line-height: 56px; text-align: center; background: #25D366; color: #fff; border-radius: 50%; font-weight: 700; font-size: 13px; box-shadow: 0 6px 18px rgba(0, 0, 0, .28); z-index: 60; transition: transform .2s; }
.wa-float:hover { transform: scale(1.08); }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .main-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-sm); padding: 8px 0; }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; padding: 6px 22px; gap: 0; }
  .main-nav li a { display: block; padding: 12px 0; border-bottom: 1px solid var(--border); }
  .main-nav li:last-child a { border-bottom: 0; }
  .menu-toggle { display: block; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero h1 { font-size: 30px; }
  .hero { padding: 60px 0 64px; }
  .section { padding: 52px 0; }
  .card-article img { height: 140px; }
}
@media (max-width: 520px) {
  .trust-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}