/**
 * Connectors 主题首页样式
 * 基于 index.html 设计
 * 
 * @package Connectors
 */

/* ============================================
   CSS 变量定义
   ============================================ */
:root {
    --primary: #0B5ED7;
    --secondary: #003A8F;
    --cta: #F97316;
    --text: #1F2937;
    --bg-light: #F5F7FA;
    --border: #E5E7EB;
}

/* ============================================
   基础样式重置
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: #ffffff;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   页眉样式
   ============================================ */
.site-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border);
}

.site-header__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.site-header__logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
}

.site-header__logo-link {
    color: var(--primary);
    text-decoration: none;
}

.site-header__nav {
    display: flex;
    align-items: center;
}

.site-header__menu {
    list-style: none;
    display: flex;
    gap: 24px;
    margin: 0;
    padding: 0;
}

.site-header__menu-link {
    font-weight: 500;
    color: var(--text);
    transition: color 0.3s ease;
}

.site-header__menu-link:hover {
    color: var(--primary);
}

    .site-header__toggle {
        display: none;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0.5rem;
        position: relative;
    }
    
    .site-header__toggle-icon {
        display: block;
        width: 24px;
        height: 2px;
        background-color: var(--text);
        position: relative;
    }
    
    .site-header__toggle-icon::before,
    .site-header__toggle-icon::after {
        content: '';
        display: block;
        width: 24px;
        height: 2px;
        background-color: var(--text);
        position: absolute;
        left: 0;
        transition: all 0.3s ease;
    }
    
    .site-header__toggle-icon::before {
        top: -8px;
    }
    
    .site-header__toggle-icon::after {
        top: 8px;
    }
    
    .site-header__toggle[aria-expanded="true"] .site-header__toggle-icon {
        background-color: transparent;
    }
    
    .site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::before {
        transform: rotate(45deg);
        top: 0;
    }
    
    .site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::after {
        transform: rotate(-45deg);
        top: 0;
    }

/* ============================================
   按钮样式
   ============================================ */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--cta);
    color: #ffffff;
}

.btn-primary:hover {
    background: #ea670f;
}

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn-outline:hover {
    background: var(--primary);
    color: #ffffff;
}

.btn-white {
    background: #ffffff;
    color: var(--secondary);
}

.btn-white:hover {
    background: #f5f5f5;
}

.btn-spacing {
    margin-left: 12px;
}

.button-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   Hero 区域
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--bg-light), #ffffff);
    padding: 100px 0;
}

.hero__grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero__title {
    font-size: 44px;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text);
}

.hero__description {
    font-size: 18px;
    margin-bottom: 30px;
    max-width: 520px;
    color: var(--text);
}

.hero__actions {
    margin-bottom: 20px;
}

.hero__tags {
    display: flex;
    gap: 16px;
    margin-top: 20px;
    font-size: 14px;
    color: var(--secondary);
    font-weight: 600;
    flex-wrap: wrap;
}

.hero__image {
    width: 100%;
    height: auto;
    border-radius: 10px;
}

/* ============================================
   通用区块样式
   ============================================ */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title__heading {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--text);
}

.section-title__description {
    max-width: 640px;
    margin: 0 auto;
    color: #555;
    font-size: 16px;
}

.section--highlight {
    background: var(--bg-light);
}

/* ============================================
   网格布局
   ============================================ */
.grid {
    display: grid;
    gap: 30px;
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid--5 {
    grid-template-columns: repeat(5, 1fr);
}

/* ============================================
   卡片样式
   ============================================ */
.card {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 30px;
    transition: all 0.3s ease;
    background: #ffffff;
}

.card:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transform: translateY(-4px);
}

.card__heading {
    margin-bottom: 10px;
    font-size: 20px;
    color: var(--text);
}

.card__text {
    font-size: 15px;
    color: #555;
    margin-bottom: 12px;
}

.card__icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.card__link {
    display: inline-flex;
    align-items: center;
    color: var(--primary);
    font-weight: 600;
    margin-top: 12px;
    font-size: 14px;
    transition: color 0.3s ease;
}

.card__link:hover {
    color: var(--secondary);
}

/* ============================================
   应用网格
   ============================================ */
.app-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.app-card {
    text-align: center;
    padding: 30px 20px;
    border-radius: 10px;
    background: #ffffff;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.app-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    transform: translateY(-4px);
}

.app-card__image {
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
    object-fit: contain;
}

.app-card__heading {
    font-size: 16px;
    color: var(--text);
}

.app-card--link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.app-card--link:hover {
    text-decoration: none;
}

/* ============================================
   制造能力区块
   ============================================ */
.manufacturing-section {
    padding: 80px 0;
    background: linear-gradient(to bottom, #ffffff 0%, #f8f9fa 100%);
}

.manufacturing-wrapper {
    margin-top: 50px;
}

.manufacturing-content {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.manufacturing-text {
    order: 1;
}

.manufacturing-image-wrapper {
    order: 2;
}

.manufacturing-text {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.manufacturing-description {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text);
    margin: 0;
}

.capabilities-section {
    margin-top: 10px;
}

.capabilities-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 20px;
    margin-top: 0;
}

.capability-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 16px;
}

.capability-list__item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 0;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
}

.capability-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: bold;
    margin-top: 2px;
}

.capability-text {
    flex: 1;
}

.manufacturing-cta {
    margin-top: 10px;
}

.manufacturing-image-wrapper {
    position: relative;
}

.manufacturing-image {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.manufacturing-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.manufacturing-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .manufacturing-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .manufacturing-image-wrapper {
        order: -1;
    }
    
    .manufacturing-description {
        font-size: 16px;
    }
}

@media (max-width: 768px) {
    .manufacturing-section {
        padding: 60px 0;
    }
    
    .manufacturing-wrapper {
        margin-top: 30px;
    }
    
    .manufacturing-content {
        gap: 30px;
    }
    
    .capabilities-title {
        font-size: 18px;
        margin-bottom: 16px;
    }
    
    .capability-list__item {
        font-size: 15px;
    }
    
    .capability-icon {
        width: 22px;
        height: 22px;
        font-size: 12px;
    }
}

/* 保留旧的类名以兼容性 */
.manufacturing-content__text {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 30px;
    color: var(--text);
}

/* ============================================
   认证标识
   ============================================ */
.cert-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.cert-logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--secondary);
    padding: 12px 24px;
    background: #ffffff;
    border-radius: 6px;
    border: 2px solid var(--border);
}

/* ============================================
   质量特性
   ============================================ */
.quality-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 800px;
    margin: 30px auto;
}

.quality-feature {
    text-align: left;
    padding: 20px;
    background: #ffffff;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.quality-feature__heading {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text);
}

.quality-feature__text {
    font-size: 15px;
    color: #555;
}

/* ============================================
   自定义区块 CTA
   ============================================ */
.custom-section-cta {
    text-align: center;
    margin-top: 40px;
}

.custom-section-cta__text {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--text);
}

/* ============================================
   CTA 区块
   ============================================ */
.cta {
    background: var(--secondary);
    color: #ffffff;
    text-align: center;
}

.cta__heading {
    font-size: 34px;
    margin-bottom: 20px;
    color: #ffffff;
}

.cta__text {
    margin-bottom: 30px;
    font-size: 18px;
    color: #ffffff;
}

/* ============================================
   博客区块
   ============================================ */
.blog-footer {
    text-align: center;
    margin-top: 30px;
}

/* ============================================
   FAQs 板块 - 卡片式手风琴样式
   ============================================ */
.faq-section {
    padding: 100px 0;
    background: linear-gradient(to bottom, #ffffff 0%, #f8f9fa 100%);
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 50px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.faq-item {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    position: relative;
}

.faq-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: transparent;
    transition: background-color 0.3s ease;
}

.faq-item:hover {
    border-color: var(--primary);
    box-shadow: 0 8px 24px rgba(11, 94, 215, 0.15);
    transform: translateY(-3px);
}

.faq-item:hover::before {
    background: var(--primary);
}

.faq-item.active {
    border-color: var(--primary);
    box-shadow: 0 12px 32px rgba(11, 94, 215, 0.2);
    transform: translateY(-3px);
}

.faq-item.active::before {
    background: var(--primary);
}

.faq-question-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 28px 32px;
    cursor: pointer;
    user-select: none;
    transition: all 0.3s ease;
    position: relative;
    background: #ffffff;
}

.faq-item:hover .faq-question-wrapper {
    background-color: #fafbfc;
}

.faq-item.active .faq-question-wrapper {
    background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
    padding-bottom: 24px;
}

.faq-question {
    font-size: 19px;
    font-weight: 600;
    margin: 0;
    color: #1f2937;
    line-height: 1.5;
    flex: 1;
    padding-right: 24px;
    transition: color 0.3s ease;
}

.faq-item:hover .faq-question {
    color: var(--primary);
}

.faq-item.active .faq-question {
    color: var(--primary);
}

.faq-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, #2563eb 100%);
    color: #ffffff;
    border-radius: 50%;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: 0 2px 8px rgba(11, 94, 215, 0.2);
}

.faq-icon::before {
    content: '+';
    position: absolute;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
    opacity: 1;
    transform: rotate(0deg);
}

.faq-item.active .faq-icon {
    background: linear-gradient(135deg, var(--secondary) 0%, #059669 100%);
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
    transform: rotate(180deg);
}

.faq-item.active .faq-icon::before {
    content: '−';
    transform: rotate(180deg);
}

.faq-answer-wrapper {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
    background: #ffffff;
}

.faq-item.active .faq-answer-wrapper {
    max-height: 600px;
    padding: 0 32px 28px 32px;
    background: linear-gradient(to bottom, #ffffff 0%, #fafbfc 100%);
}

.faq-answer {
    font-size: 15px;
    line-height: 1.8;
    color: #4b5563;
    margin: 0;
    padding-top: 20px;
    position: relative;
    padding-left: 24px;
}

.faq-answer::before {
    content: '';
    position: absolute;
    left: 0;
    top: 24px;
    width: 3px;
    height: calc(100% - 24px);
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    border-radius: 2px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .faq-section {
        padding: 60px 0;
    }
    
    .faq-grid {
        margin-top: 30px;
        gap: 16px;
    }
    
    .faq-item {
        border-radius: 12px;
    }
    
    .faq-question-wrapper {
        padding: 20px;
    }
    
    .faq-item.active .faq-question-wrapper {
        padding-bottom: 18px;
    }
    
    .faq-question {
        font-size: 17px;
        padding-right: 16px;
    }
    
    .faq-icon {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }
    
    .faq-item.active .faq-answer-wrapper {
        padding: 0 20px 20px 20px;
    }
    
    .faq-answer {
        font-size: 14px;
        padding-top: 16px;
        padding-left: 20px;
    }
    
    .faq-answer::before {
        width: 2px;
        top: 20px;
    }
}

/* ============================================
   页脚样式
   ============================================ */
.site-footer {
    background: #0f172a;
    color: #cbd5e1;
    padding: 50px 0;
}

.site-footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 30px;
}

.site-footer__heading {
    color: #ffffff;
    margin-bottom: 16px;
    font-size: 18px;
}

.site-footer__text {
    color: #cbd5e1;
    font-size: 15px;
    line-height: 1.6;
}

.site-footer__menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-footer__menu-item {
    margin-bottom: 10px;
}

.site-footer__menu-link {
    color: #cbd5e1;
    transition: color 0.3s ease;
    font-size: 15px;
}

.site-footer__menu-link:hover {
    color: #ffffff;
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 900px) {
    .hero__grid {
        grid-template-columns: 1fr;
    }
    
    .hero__title {
        font-size: 32px;
    }
    
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }
    
    .grid--5,
    .app-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .site-footer__grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .quality-features {
        grid-template-columns: 1fr;
    }
    
    .site-header__nav {
        display: none;
    }
    
    .site-header__nav--open {
        display: block !important;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border);
        padding: 20px;
        z-index: 1000;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }
    
    .site-header__nav--open .site-header__menu {
        flex-direction: column;
        gap: 12px;
    }
    
    .site-header__nav--open .site-header__menu-item {
        width: 100%;
    }
    
    .site-header__nav--open .site-header__menu-link,
    .site-header__nav--open .btn {
        display: block;
        width: 100%;
        text-align: center;
        padding: 12px;
    }
    
    .site-header__toggle {
        display: block;
    }
}

@media (max-width: 600px) {
    .app-grid {
        grid-template-columns: 1fr;
    }
    
    .site-footer__grid {
        grid-template-columns: 1fr;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .hero__title {
        font-size: 28px;
    }
    
    .section-title__heading {
        font-size: 26px;
    }
}