/* ======================================== Section Common Styles ======================================== */
.section-header { margin-bottom: 45px; text-align: center; }
.section-badge { align-items: center; background: rgba(54, 105, 239, 0.1); border-radius: 20px; color: var(--brand-blue); display: inline-flex; font-size: 13px; font-weight: 500; gap: 8px; margin-bottom: 10px; padding: 8px 16px; }
.section-title { color: var(--brand-black); font-size: clamp(28px, 4vw, 36px); font-weight: 700; margin-bottom: 8px; }
.section-subtitle { color: var(--brand-blue); font-size: 16px; font-weight: 500; }
/********************************************如何购买*********************************************/
/* ======================================== Hero Section ======================================== */
.herohowtobuy { align-items: center; background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%); display: flex; justify-content: center; min-height: 55vh; overflow: hidden; position: relative; }
.herohowtobuy-bg { inset: 0; opacity: 0.4; position: absolute; z-index: 0; }
.herohowtobuy-bg::before { background-image: radial-gradient(circle at 1px 1px, rgba(54, 105, 239, 0.3) 1px, transparent 0); background-size: 40px 40px; content: ""; inset: 0; position: absolute; }
.herohowtobuy-overlay { background: linear-gradient(to right, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.4) 60%, transparent); inset: 0; position: absolute; }
.herohowtobuy-content { margin: 0 auto; max-width: 1280px; padding: 120px 24px 80px; position: relative; text-align: center; width: 100%; z-index: 2; }
.herohowtobuy-badge { align-items: center; animation: slideUp 0.8s ease-out 0.2s both; backdrop-filter: blur(8px); background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 24px; display: inline-flex; gap: 8px; margin-bottom: 32px; padding: 8px 16px; }
.herohowtobuy-badge svg { color: var(--brand-blue); }
.herohowtobuy-badge span { color: rgba(255, 255, 255, 0.9); font-size: 14px; }
.herohowtobuy-title { animation: slideUp 0.8s ease-out 0.4s both; color: var(--brand-white); font-size: clamp(36px, 6vw, 56px); font-weight: 700; line-height: 1.2; margin-bottom: 24px; }
.herohowtobuy-title .gradient { background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-light)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.herohowtobuy-subtitle { animation: slideUp 0.8s ease-out 0.6s both; color: rgba(255, 255, 255, 0.8); font-size: 18px; line-height: 1.7; margin: 0 auto 40px; max-width: 700px; }
.herohowtobuy-cta { animation: slideUp 0.8s ease-out 0.8s both; display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.btn { align-items: center; border-radius: 28px; display: inline-flex; font-size: 16px; font-weight: 500; gap: 8px; padding: 14px 28px; transition: all var(--transition-normal); }
.btn-primary { background: var(--brand-blue); color: var(--brand-white); }
.btn-primary:hover { box-shadow: 0 10px 30px rgba(54, 105, 239, 0.4); transform: scale(1.05); }
.btn-outline { backdrop-filter: blur(8px); background: transparent; border: 1px solid rgba(255, 255, 255, 0.3); color: var(--brand-white); }
.btn-outline:hover { background: rgba(255, 255, 255, 0.1); }
.herohowtobuy-bottom-gradient { background: linear-gradient(to top, var(--brand-white), transparent); bottom: 0; height: 120px; left: 0; position: absolute; right: 0; z-index: 2; }
@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
/* ======================================== Purchase Guide Section - 上下布局 ======================================== */
.purchase-guide { background: var(--brand-white); overflow: hidden; padding: 100px 0; position: relative; }
.section-bg-decoration { background: linear-gradient(to left, rgba(248, 248, 248, 0.8), transparent); height: 100%; position: absolute; right: 0; top: 0; width: 50%; }
/* 上下布局容器 */
.channels-wrapper { display: flex; flex-direction: column; gap: 60px; position: relative; z-index: 1; }
.channel-section { background: var(--brand-white); border: 1px solid var(--brand-gray3); border-radius: 24px; box-shadow: var(--shadow-lg); padding: 48px; }
.channel-section h3 { align-items: center; color: var(--brand-black); display: flex; font-size: 28px; font-weight: 700; gap: 12px; margin-bottom: 24px; }
.channel-section h3 svg { color: var(--brand-blue); }
.channel-section > p { color: var(--brand-gray1); font-size: 16px; line-height: 1.7; margin-bottom: 32px; max-width: 800px; }
/* Store List - 横向排列 */
.store-list { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); margin-bottom: 40px; }
.store-item { background: var(--brand-gray2); border: 1px solid transparent; border-radius: 16px; padding: 24px; transition: all var(--transition-normal); }
.store-item:hover { background: rgba(54, 105, 239, 0.05); border-color: var(--brand-blue); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.store-name { color: var(--brand-black); font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.store-link { color: var(--brand-blue); font-size: 14px; transition: color var(--transition-fast); word-break: break-all; }
.store-link:hover { color: var(--brand-blue-light); text-decoration: underline; }
/* Online Benefits */
.online-benefits { border-top: 1px solid var(--brand-gray3); padding-top: 32px; }
.online-benefits h4 { color: var(--brand-black); font-size: 18px; font-weight: 600; margin-bottom: 20px; }
.benefit-list { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); list-style: none; padding: 0; }
.benefit-list li { align-items: center; color: var(--brand-gray1); display: flex; font-size: 15px; gap: 12px; }
.benefit-check { align-items: center; background: linear-gradient(135deg, var(--brand-blue), var(--brand-blue-light)); border-radius: 50%; display: flex; flex-shrink: 0; height: 24px; justify-content: center; width: 24px; }
.benefit-check svg { color: white; height: 14px; width: 14px; }
/* Offline Channels */
.search-container { margin-bottom: 32px; }
.search-bar { align-items: center; background: var(--brand-gray2); border: 2px solid transparent; border-radius: 16px; display: flex; gap: 12px; max-width: 600px; padding: 16px 24px; transition: all var(--transition-normal); }
.search-bar:focus-within { background: var(--brand-white); border-color: var(--brand-blue); box-shadow: 0 0 0 4px rgba(54, 105, 239, 0.1); }
.search-bar label { align-items: center; color: var(--brand-gray1); display: flex; font-size: 15px; font-weight: 500; gap: 8px; white-space: nowrap; }
.search-bar input { background: transparent; border: none; color: var(--brand-black); flex: 1; font-size: 16px; outline: none; }
.search-bar input::placeholder { color: var(--brand-gray1); }
.search-hint { color: var(--brand-gray1); font-size: 14px; margin-top: 12px; padding-left: 4px; }
/* Province Groups */
.province-group { background: var(--brand-gray2); border-radius: 16px; margin-bottom: 16px; overflow: hidden; transition: all var(--transition-normal); }
.province-group:hover { box-shadow: var(--shadow-md); }
.province-header { align-items: center; background: var(--brand-white); border: 1px solid var(--brand-gray3); border-radius: 16px; cursor: pointer; display: flex; justify-content: space-between; padding: 20px 24px; transition: all var(--transition-normal); }
.province-header:hover { background: rgba(54, 105, 239, 0.05); }
.province-header h4 { color: var(--brand-black); font-size: 18px; font-weight: 600; margin: 0; }
.clinic-count { background: rgba(54, 105, 239, 0.1); border-radius: 20px; color: var(--brand-blue); font-size: 13px; font-weight: 500; padding: 4px 12px; }
.toggle-icon { color: var(--brand-gray1); transition: transform var(--transition-normal); }
.province-header.active .toggle-icon { transform: rotate(180deg); }
.province-content { max-height: 0; overflow: hidden; transition: max-height var(--transition-slow); }
.province-content.expanded { max-height: 2000px; }
.clinic-list { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr)); padding: 20px; }
.clinic-card { background: var(--brand-white); border: 1px solid var(--brand-gray3); border-radius: 12px; padding: 24px; transition: all var(--transition-normal); }
.clinic-card:hover { border-color: var(--brand-blue); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.clinic-name { color: var(--brand-black); font-size: 17px; font-weight: 600; margin-bottom: 16px; }
.clinic-info { align-items: flex-start; color: var(--brand-gray1); display: flex; font-size: 14px; gap: 10px; line-height: 1.5; margin-bottom: 10px; }
.clinic-info svg { color: var(--brand-blue); flex-shrink: 0; margin-top: 2px; }
/* No Results */
.no-results { color: var(--brand-gray1); padding: 60px 20px; text-align: center; }
.no-results svg { color: var(--brand-gray3); margin-bottom: 20px; }
.no-results h4 { color: var(--brand-black); font-size: 20px; margin-bottom: 10px; }
/* ======================================== 如何购买 Responsive Design ======================================== */
@media (max-width: 1024px) {
    .channel-section { padding: 32px; }
    .store-list { grid-template-columns: 1fr; }
    .benefit-list { grid-template-columns: 1fr 1fr; }
    .clinic-list { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .herohowtobuy-content { padding: 100px 24px 60px; }
    .channel-section { padding: 24px; }
    .channel-section h3 { font-size: 22px; }
    .benefit-list { grid-template-columns: 1fr; }
    .province-header { padding: 16px 20px; }
    .clinic-list { padding: 16px; }
}