/* ============================================
   巴中辅助生殖服务网站 - 全局样式表
   主题色：优雅紫 #9C27B0 / #7B1FA2
   强调色：珊瑚粉 #FF4081
   ============================================ */

/* --- 基础变量与重置 --- */
:root {
    --bst-primary: #9C27B0;
    --bst-primary-dark: #7B1FA2;
    --bst-primary-light: #E1BEE7;
    --bst-accent: #FF4081;
    --bst-accent-light: #FF80AB;
    --bst-text: #333333;
    --bst-text-muted: #666666;
    --bst-bg-light: #FAFAFA;
    --bst-bg-white: #FFFFFF;
    --bst-border: #EEEEEE;
    --bst-shadow: 0 4px 20px rgba(0,0,0,0.08);
    --bst-shadow-hover: 0 8px 30px rgba(156,39,176,0.15);
    --bst-transition: all 0.3s ease;
    --bst-radius: 12px;
    --bst-radius-lg: 20px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--bst-text);
    line-height: 1.6;
    background-color: var(--bst-bg-light);
    overflow-x: hidden;
}

/* --- 顶部栏 --- */
.bst-topbar {
    background: linear-gradient(135deg, var(--bst-primary-dark) 0%, var(--bst-primary) 100%);
    color: rgba(255,255,255,0.9);
    font-size: 0.875rem;
    padding: 0.75rem 0;
    position: relative;
    z-index: 1030;
}

.bst-welcome-text strong {
    color: #fff;
    font-weight: 600;
}

.bst-phone-link {
    color: #fff !important;
    text-decoration: none;
    font-weight: 600;
    transition: var(--bst-transition);
}

.bst-phone-link:hover {
    color: var(--bst-accent-light) !important;
}

.bst-consult-trigger,
.bst-city-toggle {
    cursor: pointer;
    transition: var(--bst-transition);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.bst-consult-trigger:hover,
.bst-city-toggle:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
}

/* --- 导航栏 --- */
.bst-navbar {
    background: var(--bst-bg-white);
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    padding: 0.75rem 0;
    transition: var(--bst-transition);
}

.bst-navbar.scrolled {
    padding: 0.5rem 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.bst-brand-title {
    font-size: 1.25rem;
    color: var(--bst-primary);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.bst-brand-subtitle {
    color: var(--bst-text-muted);
    font-size: 0.75rem;
    display: block;
    margin-top: -2px;
}

.bst-nav-link {
    color: var(--bst-text) !important;
    font-weight: 500;
    padding: 0.75rem 1.25rem !important;
    position: relative;
    transition: var(--bst-transition);
}

.bst-nav-link:hover,
.bst-nav-link.active {
    color: var(--bst-primary) !important;
}

.bst-nav-indicator {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--bst-primary);
    border-radius: 2px;
}

.bst-btn-consult {
    background: linear-gradient(135deg, var(--bst-accent) 0%, #F50057 100%);
    border: none;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(255,64,129,0.3);
    transition: var(--bst-transition);
}

.bst-btn-consult:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255,64,129,0.4);
}

/* --- 城市面板 --- */
.bst-city-panel {
    background: var(--bst-bg-white);
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 1020;
    border-top: 3px solid var(--bst-primary);
}

.bst-city-panel.show {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.bst-city-tag {
    display: block;
    padding: 0.5rem 1rem;
    background: var(--bst-bg-light);
    color: var(--bst-text);
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.875rem;
    transition: var(--bst-transition);
    text-align: center;
    border: 1px solid transparent;
}

.bst-city-tag:hover,
.bst-city-tag.active {
    background: var(--bst-primary);
    color: #fff;
    border-color: var(--bst-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(156,39,176,0.2);
}

/* --- 英雄区轮播 --- */
.bst-hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    max-height: 900px;
    overflow: hidden;
}

.bst-hero-item {
    height: 100vh;
    min-height: 600px;
    max-height: 900px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.bst-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(123,31,162,0.85) 0%, rgba(156,39,176,0.75) 50%, rgba(255,64,129,0.4) 100%);
}

.bst-hero-content {
    position: relative;
    z-index: 2;
    color: #fff;
    padding: 2rem 0;
}

.bst-hero-subtitle {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.bst-hero-title {
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
    line-height: 1.2;
}

.bst-hero-title .text-highlight {
    color: var(--bst-accent-light);
    position: relative;
    display: inline-block;
}

.bst-hero-title .text-highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 8px;
    background: rgba(255,64,129,0.3);
    border-radius: 4px;
    z-index: -1;
}

.bst-hero-desc {
    opacity: 0.95;
    max-width: 600px;
}

.bst-btn-glow {
    background: linear-gradient(135deg, var(--bst-accent) 0%, #F50057 100%);
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.bst-btn-glow::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: 0.5s;
    z-index: -1;
}

.bst-btn-glow:hover::before {
    left: 100%;
}

.bst-hero-stats {
    border-top: 1px solid rgba(255,255,255,0.2);
}

.bst-stat-item {
    text-align: center;
}

.bst-stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    display: block;
    line-height: 1;
    margin-bottom: 0.25rem;
}

.bst-hero-control {
    width: 5%;
    opacity: 0;
    transition: var(--bst-transition);
}

.bst-hero-section:hover .bst-hero-control {
    opacity: 1;
}

.bst-control-icon {
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bst-hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 3;
    line-height: 0;
}

.bst-hero-indicators {
    bottom: 30px;
    z-index: 4;
}

.bst-hero-indicators button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.5);
    border: 2px solid transparent;
    margin: 0 6px;
}

.bst-hero-indicators button.active {
    background-color: #fff;
    transform: scale(1.2);
}

/* --- 通用区块样式 --- */
.bst-section {
    position: relative;
    padding: 3rem 0;
}

.bst-section-subtitle {
    font-size: 0.875rem;
    letter-spacing: 2px;
    display: inline-block;
    margin-bottom: 0.5rem;
}

.bst-section-title {
    color: var(--bst-text);
    line-height: 1.3;
}

.bst-title-divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--bst-primary) 0%, var(--bst-accent) 100%);
    border-radius: 2px;
}

/* --- 服务卡片 --- */
.bst-services-grid {
    margin-top: 2rem;
}

.bst-service-card {
    transition: var(--bst-transition);
    border-radius: var(--bst-radius);
    overflow: hidden;
}

.bst-service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--bst-shadow-hover) !important;
}

.bst-service-img-wrapper {
    height: 220px;
    overflow: hidden;
}

.bst-service-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.bst-service-card:hover .bst-service-img {
    transform: scale(1.1);
}

.bst-service-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(156,39,176,0.8);
    opacity: 0;
    transition: var(--bst-transition);
}

.bst-service-card:hover .bst-service-overlay {
    opacity: 1;
}

.bst-service-btn {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(0);
    transition: transform 0.3s ease 0.1s;
}

.bst-service-card:hover .bst-service-btn {
    transform: scale(1);
}

.bst-service-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--bst-accent);
    color: #fff;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 2;
}

.bst-service-icon {
    width: 60px;
    height: 60px;
    background: var(--bst-primary-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bst-service-features li {
    display: flex;
    align-items: center;
}

/* --- 关于我们区块 --- */
.bst-about-section {
    background: linear-gradient(180deg, var(--bst-bg-light) 0%, #fff 100%);
}

.bst-about-images {
    position: relative;
}

.bst-about-img-1,
.bst-about-img-2,
.bst-about-img-3 {
    border-radius: var(--bst-radius-lg);
    box-shadow: var(--bst-shadow);
}

.bst-about-experience {
    box-shadow: 0 10px 30px rgba(156,39,176,0.3);
    text-align: center;
}

.bst-about-decor {
    position: absolute;
    border-radius: 50%;
    background: var(--bst-primary-light);
    opacity: 0.3;
    z-index: -1;
}

.bst-decor-1 {
    width: 200px;
    height: 200px;
    top: -30px;
    left: -30px;
}

.bst-decor-2 {
    width: 150px;
    height: 150px;
    bottom: 20px;
    right: -20px;
    background: var(--bst-accent-light);
}

.bst-feature-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* --- 流程区块 --- */
.bst-process-section {
    background: var(--bst-bg-white);
}

.bst-process-line {
    top: 40px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--bst-primary-light) 0%, var(--bst-primary) 50%, var(--bst-primary-light) 100%);
    z-index: 0;
}

.bst-process-icon {
    width: 80px;
    height: 80px;
    border: 3px solid var(--bst-primary-light);
    position: relative;
    z-index: 1;
    transition: var(--bst-transition);
}

.bst-process-item:hover .bst-process-icon {
    border-color: var(--bst-primary);
    background: var(--bst-primary);
    color: #fff !important;
}

.bst-process-item:hover .bst-process-icon i {
    color: #fff !important;
}

.bst-process-number {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 30px;
    height: 30px;
    background: var(--bst-accent);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    z-index: 2;
}

/* --- 城市区块 --- */
.bst-cities-section {
    background: var(--bst-bg-light);
}

.bst-city-search input {
    border: 2px solid var(--bst-primary-light);
    transition: var(--bst-transition);
}

.bst-city-search input:focus {
    border-color: var(--bst-primary);
    box-shadow: 0 0 0 0.25rem rgba(156,39,176,0.1);
}

.bst-city-item {
    background: var(--bst-bg-white);
    border: 1px solid var(--bst-border);
    color: var(--bst-text);
    transition: var(--bst-transition);
    font-size: 0.875rem;
}

.bst-city-item:hover,
.bst-city-item.active {
    background: var(--bst-primary);
    border-color: var(--bst-primary);
    color: #fff;
    transform: translateX(5px);
}

/* --- 新闻区块 --- */
.bst-news-card {
    transition: var(--bst-transition);
    border-radius: var(--bst-radius);
}

.bst-news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--bst-shadow-hover) !important;
}

.bst-news-img-wrapper {
    overflow: hidden;
    position: relative;
}

.bst-news-img-wrapper img {
    transition: transform 0.5s ease;
}

.bst-news-card:hover .bst-news-img-wrapper img {
    transform: scale(1.05);
}

.bst-news-date {
    background: var(--bst-primary) !important;
    text-align: center;
    min-width: 60px;
}

.bst-news-date span {
    font-size: 1.5rem;
    line-height: 1;
}

.bst-news-title a {
    transition: var(--bst-transition);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.bst-news-title a:hover {
    color: var(--bst-primary) !important;
}

/* --- FAQ区块 --- */
.bst-faq-btn {
    transition: var(--bst-transition);
}

.bst-faq-btn:hover {
    background: var(--bst-primary) !important;
    color: #fff !important;
}

.bst-faq-btn:hover .bst-faq-icon {
    color: #fff;
}

.bst-faq-btn:not(.collapsed) {
    background: var(--bst-primary) !important;
    color: #fff !important;
    border-bottom-left-radius: 0 !important;
    border-bottom-right-radius: 0 !important;
}

.bst-faq-btn:not(.collapsed) .bst-faq-icon {
    transform: rotate(180deg);
    color: #fff;
}

.bst-faq-icon {
    transition: transform 0.3s ease;
    color: var(--bst-primary);
}

.bst-faq-content {
    border-top: 1px solid var(--bst-border);
}

/* --- 评价区块 --- */
.bst-testimonial-card {
    border-radius: var(--bst-radius);
    transition: var(--bst-transition);
}

.bst-testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1) !important;
}

.bst-author-avatar {
    font-size: 0.875rem;
    font-weight: 600;
}

/* --- 联系区块 --- */
.bst-contact-section {
    background: linear-gradient(135deg, var(--bst-primary) 0%, var(--bst-primary-dark) 100%);
    position: relative;
    overflow: hidden;
}

.bst-contact-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}

.bst-contact-form-wrapper {
    border-radius: var(--bst-radius-lg);
}

.bst-contact-icon {
    transition: var(--bst-transition);
}

.bst-contact-info-item:hover .bst-contact-icon {
    transform: scale(1.1);
    background: rgba(255,255,255,0.3) !important;
}

/* --- 页脚 --- */
.bst-footer {
    background: #2d2d3a;
    color: rgba(255,255,255,0.7);
}

.bst-footer-cta {
    background: linear-gradient(135deg, var(--bst-primary) 0%, var(--bst-accent) 100%);
    padding: 3rem 0;
    color: #fff;
}

.bst-cta-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.bst-footer-main {
    padding: 4rem 0 2rem;
}

.bst-footer-title {
    color: #fff;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

.bst-footer-desc {
    color: rgba(255,255,255,0.6);
    font-size: 0.875rem;
    line-height: 1.8;
}

.bst-footer-phone {
    color: var(--bst-accent-light);
    font-size: 1.25rem;
    font-weight: 700;
    text-decoration: none;
}

.bst-footer-links li {
    margin-bottom: 0.75rem;
}

.bst-footer-link {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: var(--bst-transition);
    display: inline-block;
}

.bst-footer-link:hover {
    color: var(--bst-accent-light);
    transform: translateX(5px);
}

.bst-friend-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.8);
    border-radius: 4px;
    font-size: 0.75rem;
    text-decoration: none;
    transition: var(--bst-transition);
}

.bst-friend-tag:hover {
    background: var(--bst-primary);
    color: #fff;
}

.bst-weixin-box {
    border-radius: var(--bst-radius);
}

.bst-footer-bottom {
    background: #252532;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.bst-icp-link {
    color: rgba(255,255,255,0.5);
    text-decoration: none;
}

.bst-icp-link:hover {
    color: var(--bst-accent-light);
}

/* --- 悬浮工具 --- */
.bst-float-tools {
    position: fixed;
    right: 20px;
    bottom: 100px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.bst-float-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: var(--bst-transition);
    font-size: 1.25rem;
}

.bst-float-phone {
    background: var(--bst-primary);
    color: #fff;
}

.bst-float-phone a {
    color: #fff;
    text-decoration: none;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bst-float-wechat {
    background: #07c160;
    color: #fff;
}

.bst-float-top {
    background: var(--bst-bg-white);
    color: var(--bst-text);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.bst-float-top.show {
    opacity: 1;
    transform: translateY(0);
}

.bst-float-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

/* --- 页面头部通用 --- */
.bst-page-header {
    position: relative;
    margin-bottom: 2rem;
}

.bst-header-shape {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background: var(--bst-bg-light);
    clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

.breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255,255,255,0.5);
}

/* --- 文章列表页 --- */
.bst-newslist-item {
    transition: var(--bst-transition);
    border-radius: var(--bst-radius);
    overflow: hidden;
}

.bst-newslist-item:hover {
    box-shadow: var(--bst-shadow-hover) !important;
}

.bst-newslist-title a {
    transition: var(--bst-transition);
}

.bst-newslist-title a:hover {
    color: var(--bst-primary) !important;
}

.bst-section-filter .btn {
    transition: var(--bst-transition);
}

.bst-section-filter .btn-outline-secondary:hover,
.bst-section-filter .btn-primary {
    background: var(--bst-primary);
    border-color: var(--bst-primary);
    color: #fff;
}

.bst-random-item {
    transition: var(--bst-transition);
}

.bst-random-item:hover {
    background: var(--bst-bg-light);
    border-radius: var(--bst-radius);
}

.bst-random-num {
    font-size: 0.625rem;
    font-weight: 700;
}

/* --- 文章详情页 --- */
.bst-article {
    border-radius: var(--bst-radius);
    overflow: hidden;
}

.content {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--bst-text);
}

.content p {
    margin-bottom: 1.5rem;
}

.content h2,
.content h3,
.content h4 {
    color: var(--bst-primary-dark);
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--bst-radius);
    margin: 1.5rem 0;
}

.content ul,
.content ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.content li {
    margin-bottom: 0.5rem;
}

.bst-article-excerpt {
    border-left: 4px solid var(--bst-primary);
    border-radius: 0 var(--bst-radius) var(--bst-radius) 0;
}

/* --- 关于我们页面 --- */
.bst-timeline-content {
    position: relative;
}

.bst-timeline-content::before {
    content: '';
    position: absolute;
    top: 20px;
    width: 20px;
    height: 20px;
    background: var(--bst-bg-white);
    transform: rotate(45deg);
}

.bst-timeline-item:nth-child(odd) .bst-timeline-content::before {
    right: -10px;
    border-right: 2px solid var(--bst-border);
    border-top: 2px solid var(--bst-border);
}

.bst-timeline-item:nth-child(even) .bst-timeline-content::before {
    left: -10px;
    border-left: 2px solid var(--bst-border);
    border-bottom: 2px solid var(--bst-border);
}

.bst-team-card {
    border-radius: var(--bst-radius);
    overflow: hidden;
}

.bst-team-img-wrapper {
    position: relative;
}

.bst-team-overlay {
    background: linear-gradient(to top, rgba(123,31,162,0.8), transparent);
    opacity: 0;
    transition: var(--bst-transition);
}

.bst-team-card:hover .bst-team-overlay {
    opacity: 1;
}

.bst-social-links {
    transform: translateY(20px);
    transition: var(--bst-transition);
}

.bst-team-card:hover .bst-social-links {
    transform: translateY(0);
}

/* --- 联系我们页面 --- */
.bst-contact-card {
    transition: var(--bst-transition);
    border-radius: var(--bst-radius);
}

.hover-lift:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15) !important;
}

.bst-form-wrapper {
    border-radius: var(--bst-radius-lg);
}

.bst-quick-form input,
.bst-quick-form textarea {
    border: 1px solid rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.1);
    color: #fff;
}

.bst-quick-form input::placeholder,
.bst-quick-form textarea::placeholder {
    color: rgba(255,255,255,0.6);
}

.bst-faq-link-item {
    transition: var(--bst-transition);
    border: 1px solid var(--bst-border);
}

.bst-faq-link-item:hover {
    border-color: var(--bst-primary);
    transform: translateX(5px);
}

/* --- 响应式优化 --- */
@media (max-width: 991.98px) {
    .bst-hero-section,
    .bst-hero-item {
        height: auto;
        min-height: 500px;
        max-height: none;
    }
    
    .bst-hero-title {
        font-size: 2rem;
    }
    
    .bst-stat-number {
        font-size: 1.75rem;
    }
    
    .bst-timeline-line {
        left: 20px;
    }
    
    .bst-timeline-item .bst-timeline-content::before {
        display: none;
    }
    
    .bst-timeline-dot {
        left: 10px !important;
        right: auto !important;
    }
    
    .bst-timeline-item > div:first-child {
        padding-left: 50px !important;
        padding-right: 15px !important;
        text-align: left !important;
    }
}

@media (max-width: 767.98px) {
    .bst-section {
        padding: 2rem 0;
    }
    
    .bst-hero-title {
        font-size: 1.75rem;
    }
    
    .bst-section-title {
        font-size: 1.75rem;
    }
    
    .bst-footer-cta .row {
        text-align: center;
    }
    
    .bst-footer-cta .text-md-end {
        text-align: center !important;
        margin-top: 1.5rem;
    }
    
    .bst-float-tools {
        right: 10px;
        bottom: 80px;
    }
    
    .bst-float-btn {
        width: 45px;
        height: 45px;
        font-size: 1.125rem;
    }
}

/* --- 动画效果 --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.bst-animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

/* --- 工具类 --- */
.transition-all {
    transition: var(--bst-transition);
}

.hover-shadow:hover {
    box-shadow: var(--bst-shadow-hover) !important;
}

.object-fit-cover {
    object-fit: cover;
}

.rounded-bottom-right {
    border-bottom-right-radius: var(--bst-radius) !important;
    border-top-left-radius: 0 !important;
    border-top-right-radius: 0 !important;
    border-bottom-left-radius: 0 !important;
}

.bg-gradient-dark {
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--bst-primary) 0%, var(--bst-primary-dark) 100%);
}

.text-gradient {
    background: linear-gradient(135deg, var(--bst-primary) 0%, var(--bst-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* --- 模态框优化 --- */
.bst-modal-content {
    border-radius: var(--bst-radius-lg);
    border: none;
}

.modal-header {
    background: linear-gradient(135deg, var(--bst-primary) 0%, var(--bst-primary-dark) 100%);
    color: #fff;
    border-radius: var(--bst-radius-lg) var(--bst-radius-lg) 0 0;
}

.modal-header .btn-close {
    filter: invert(1);
}

/* --- 表单优化 --- */
.form-control:focus {
    border-color: var(--bst-primary);
    box-shadow: 0 0 0 0.25rem rgba(156,39,176,0.15);
}

.form-check-input:checked {
    background-color: var(--bst-primary);
    border-color: var(--bst-primary);
}

.btn-check:checked + .btn-outline-primary {
    background-color: var(--bst-primary);
    border-color: var(--bst-primary);
}

/* --- 加载动画 --- */
.bst-submit-btn {
    position: relative;
    overflow: hidden;
}

.bst-submit-btn.loading {
    pointer-events: none;
    opacity: 0.8;
}

.bst-submit-btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: translateY(-50%) rotate(360deg); }
}