/* Sinopharm — en.sinopharm.com branding */
:root {
  --sp-blue: #0A6FD8;
  --sp-blue-nav: #0A6FD7;
  --sp-blue-active: #0A6CD4;
  --sp-blue-dark: #05236C;
  --sp-blue-mid: #0061C7;
  --sp-blue-link: #0462C5;
  --sp-blue-light: #7DADE3;
  --sp-hover: #007d9d;
  --white: #fff;
  --gray-bg: #F4F4F4;
  --gray-border: #D0D0D0;
  --gray-text: #252525;
  --gray-muted: #313131;
  --radius: 6px;
  --radius-pill: 14px;
  --font-body: Helvetica, Arial, sans-serif;
  --font-body-zh: 'Microsoft YaHei', 'PingFang SC', Helvetica, sans-serif;
  --font-title: Georgia, 'Times New Roman', serif;
  --container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
html[lang="zh-Hans"] body { font-family: var(--font-body-zh); }
body { font-family: var(--font-body); font-size: 16px; line-height: 1.6; color: var(--gray-text); background: var(--white); }
a { color: var(--sp-blue-link); text-decoration: none; }
a:hover { color: var(--sp-hover); text-decoration: underline; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

.top-stripe { height: 14px; background: var(--sp-blue); }

.header { background: var(--white); box-shadow: 0 1px 4px rgba(10,111,216,.08); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 20px; max-width: var(--container); margin: 0 auto; flex-wrap: wrap; gap: 12px; }
.logo img { width: 160px; height: auto; }
.nav-right { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.nav-links { display: flex; list-style: none; gap: 0; flex-wrap: wrap; }
.nav-links a { font-size: 15px; color: var(--sp-blue-nav); padding: 8px 12px; white-space: nowrap; text-decoration: none; }
.nav-links a:hover, .nav-links a.active { color: var(--sp-hover); }
.lang-switcher { display: flex; gap: 4px; flex-wrap: wrap; }
.lang-btn { background: var(--sp-blue-nav); color: var(--white); padding: 3px 10px; font-size: 12px; border-radius: 13px; text-decoration: none; }
.lang-btn:hover { background: var(--sp-blue-active); text-decoration: none; color: var(--white); }
.lang-btn.active { background: var(--sp-blue-dark); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; }
.nav-toggle span { width: 24px; height: 2px; background: var(--sp-blue); }

.hero { position: relative; height: 360px; overflow: hidden; }
.hero img { width: 100%; height: 100%; object-fit: cover; }
.hero-caption { position: absolute; bottom: 0; left: 0; right: 0; background: rgba(0,0,0,.45); text-align: center; padding: 20px; }
.hero-caption p { color: var(--white); font-family: var(--font-title); font-size: clamp(1.1rem, 3vw, 1.75rem); }

.stats-bar { background: url('https://en.sinopharm.com/att/106.files/images/Home_Data_BK.jpg') center/cover; padding: 36px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); text-align: center; gap: 16px; }
.stat-card { padding: 16px; }
.stat-num { display: block; font-size: 2rem; font-weight: bold; color: var(--sp-blue-link); }
.stat-label { font-size: 13px; color: var(--gray-muted); }

.main { padding: 48px 0 64px; min-height: 50vh; }
.page-header { border-bottom: 1px solid var(--gray-border); padding-bottom: 20px; margin-bottom: 32px; }
.page-header h1 { font-family: var(--font-title); font-size: clamp(1.5rem, 4vw, 2rem); color: var(--sp-blue-mid); }
.page-header h1::before { content: ''; display: inline-block; width: 32px; height: 40px; background: url('https://en.sinopharm.com/att/106.files/images/Home_ArrowUp.png') center/contain no-repeat; margin-right: 10px; vertical-align: middle; }

.content-block { margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px dashed var(--gray-border); }
.content-block:last-child { border-bottom: none; }
.content-block h2 { font-family: var(--font-title); font-size: 1.15rem; color: var(--sp-blue-mid); margin-bottom: 10px; padding-left: 18px; background: url('https://en.sinopharm.com/att/106.files/images/Dot_Blue.png') left 6px no-repeat; }
.content-block p { color: var(--gray-muted); line-height: 1.75; }

.partner-links-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; padding: 16px; background: var(--gray-bg); border-left: 4px solid var(--sp-blue-active); }
.partner-link { padding: 8px 16px; border: 1px solid var(--sp-blue-light); border-radius: var(--radius); font-size: 14px; color: var(--sp-blue-link); text-decoration: none; }
.partner-link:hover { background: var(--sp-blue); color: var(--white); text-decoration: none; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-info .content-block h2 { background: none; padding-left: 0; }

.form-panel { background: var(--gray-bg); border: 1px solid var(--gray-border); padding: 28px; }
.feedback-form { display: flex; flex-direction: column; gap: 16px; }
.form-row label { display: block; font-size: 14px; font-weight: bold; color: var(--sp-blue-mid); margin-bottom: 4px; }
.form-row input, .form-row textarea { width: 100%; padding: 11px 13px; border: 1px solid var(--gray-border); border-radius: var(--radius); font-family: inherit; font-size: 15px; }
.form-row input:focus, .form-row textarea:focus { outline: none; border-color: var(--sp-blue); box-shadow: 0 0 0 3px rgba(10,111,216,.12); }
.form-note { font-size: 12px; color: #757575; }
.form-error { background: #fef2f2; color: #b91c1c; padding: 10px; border-radius: var(--radius); font-size: 14px; }
.btn { display: inline-block; padding: 12px 28px; font-size: 15px; font-weight: bold; border-radius: var(--radius-pill); border: none; cursor: pointer; font-family: inherit; text-decoration: none; }
.btn-primary { background: var(--sp-blue); color: var(--white); }
.btn-primary:hover { background: var(--sp-blue-dark); color: var(--white); text-decoration: none; }
.btn-outline { background: transparent; color: var(--sp-blue); border: 1px solid var(--sp-blue-light); }
.form-success { text-align: center; padding: 32px 16px; }
.form-success h3 { font-family: var(--font-title); color: var(--sp-blue-mid); margin-bottom: 16px; }

.footer { background: url('https://en.sinopharm.com/att/106.files/images/Bottom_BK.jpg') center/cover; background-color: var(--sp-blue-dark); color: var(--white); margin-top: auto; }
.footer-main { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; padding: 40px 20px; }
.footer-col h3 { font-size: 15px; margin-bottom: 12px; color: var(--sp-blue-light); }
.footer-links { list-style: none; }
.footer-links a { color: #99B7CD; font-size: 13px; line-height: 1.8; text-decoration: none; }
.footer-links a:hover { color: var(--white); }
.footer-contact { font-size: 14px; margin-top: 12px; color: var(--white); }
.footer-contact a { color: var(--white); }
.official-link { display: inline-block; margin-top: 12px; font-size: 13px; color: var(--sp-blue-light); }
.footer-bottom { border-top: 1px solid #3A58BC; padding: 20px; text-align: center; }
.footer-tagline { font-size: 13px; color: #ABC8E7; font-weight: bold; margin-bottom: 6px; }
.footer-copy { font-size: 12px; color: #8A9ACD; }

@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid, .footer-main { grid-template-columns: 1fr; }
  .nav-toggle { display: flex; }
  .nav-right { display: none; width: 100%; flex-direction: column; align-items: stretch; }
  .nav-right.open { display: flex; }
  .nav-links { flex-direction: column; }
}