/* ========================================
   联系我们页面 - 创新样式
   洲华工程官网
   ======================================== */

/* ---------- Hero区域 V2 ---------- */
.contact-hero-v2 {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: calc(var(--navbar-height) + 4rem) 2rem 6rem;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
    overflow: hidden;
}

.hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.hero-particles::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(0, 212, 255, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(255, 140, 0, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.03) 0%, transparent 60%);
    animation: particleFloat 20s ease-in-out infinite;
}

@keyframes particleFloat {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.02); }
}

.hero-pulse-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    pointer-events: none;
}

.hero-pulse-ring::before,
.hero-pulse-ring::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    animation: pulseRing 4s ease-out infinite;
}

.hero-pulse-ring::after {
    animation-delay: 2s;
}

@keyframes pulseRing {
    0% { transform: scale(0.8); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

.contact-hero-content-v2 {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-tag-v2 {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1.25rem;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 50px;
    margin-bottom: 2rem;
}

.tag-pulse {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: tagPulse 2s ease-in-out infinite;
}

@keyframes tagPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-tag-v2 .tag-text {
    font-size: 0.875rem;
    color: var(--accent-primary);
    font-weight: 500;
    letter-spacing: 0.05em;
}

.contact-title-v2 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.contact-title-v2 .highlight {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-title-v2 .cursor {
    display: inline-block;
    color: var(--accent-primary);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

.contact-subtitle-v2 {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 3rem;
}

/* 快速联系按钮组 */
.quick-contact-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.quick-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.75rem;
    background: var(--surface-primary);
    border: 1px solid var(--border-primary);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.quick-btn:hover {
    background: var(--surface-hover);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.15);
}

.quick-btn .btn-icon {
    font-size: 1.25rem;
}

.scroll-hint {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ---------- 3D翻转联系卡片 ---------- */
.contact-cards-section {
    padding: 6rem 2rem;
    background: var(--bg-primary);
}

.flip-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 3rem auto 0;
}

.flip-card {
    height: 320px;
    perspective: 1000px;
    cursor: pointer;
}

.flip-card:focus {
    outline: none;
}

.flip-card:focus .flip-card-inner {
    box-shadow: 0 0 0 3px var(--accent-primary);
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
    border-radius: 20px;
}

.flip-card:hover .flip-card-inner,
.flip-card:focus .flip-card-inner,
.flip-card.flipped .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.flip-card-front {
    background: linear-gradient(145deg, var(--surface-primary), var(--surface-secondary));
    border: 1px solid var(--border-primary);
}

.flip-card-back {
    background: linear-gradient(145deg, var(--accent-primary), var(--accent-secondary));
    transform: rotateY(180deg);
    color: white;
}

.card-icon-bg {
    position: absolute;
    width: 150px;
    height: 150px;
    opacity: 0.05;
    color: var(--text-primary);
}

.card-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.flip-card-front h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.flip-card-front p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.flip-hint {
    position: absolute;
    bottom: 1.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    opacity: 0.7;
}

.flip-card-back h4 {
    font-size: 1rem;
    font-weight: 500;
    opacity: 0.9;
    margin-bottom: 1rem;
}

.contact-link-large {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
    margin-bottom: 1rem;
    transition: opacity 0.3s;
}

.contact-link-large:hover {
    opacity: 0.9;
}

.availability {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: statusPulse 2s ease-in-out infinite;
}

.status-dot.online {
    background: #4ade80;
}

@keyframes statusPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.action-btn {
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s;
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.qr-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.qr-code {
    width: 100px;
    height: 100px;
    padding: 0.5rem;
    background: white;
    border-radius: 12px;
    color: var(--bg-primary);
}

.wechat-id {
    font-size: 0.75rem;
    opacity: 0.9;
}

.address-text {
    font-size: 1.125rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.map-preview {
    width: 120px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

/* ---------- 智能项目需求引导 ---------- */
.project-guide-section {
    padding: 6rem 2rem;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.guide-container {
    max-width: 900px;
    margin: 0 auto;
}

.guide-header {
    text-align: center;
    margin-bottom: 3rem;
}

.guide-widget {
    background: linear-gradient(145deg, var(--surface-primary) 0%, var(--surface-hover) 100%);
    border: 1px solid var(--border-primary);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 
        0 4px 6px rgba(0, 0, 0, 0.02),
        0 12px 24px rgba(0, 0, 0, 0.06),
        0 24px 48px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

/* 进度指示器 */
.guide-progress {
    margin-bottom: 2.5rem;
}

.progress-line {
    height: 4px;
    background: var(--border-primary);
    border-radius: 2px;
    margin-bottom: 1rem;
    position: relative;
}

.progress-fill {
    position: absolute;
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 2px;
    transition: width 0.5s ease;
    width: 25%;
}

.progress-steps {
    display: flex;
    justify-content: space-between;
}

.progress-steps .step {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 600;
    background: var(--surface-secondary);
    color: var(--text-muted);
    border: 2px solid var(--border-primary);
    transition: all 0.3s;
}

.progress-steps .step.active {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

.progress-steps .step.completed {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

/* 问题容器 */
.guide-content {
    min-height: 400px;
}

.guide-step {
    display: none;
    animation: fadeInUp 0.5s ease;
}

.guide-step.active {
    display: block;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.question-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--text-primary), var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.question-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-primary);
}

/* 选项网格 */
.option-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

@media (max-width: 991px) {
    .option-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .option-grid {
        grid-template-columns: 1fr;
    }
}

.option-card {
    padding: 1.5rem;
    background: linear-gradient(145deg, #1a3a4a, #0f2936);
    border: 2px solid rgba(0, 212, 255, 0.3);
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.option-card:hover {
    border-color: var(--accent-primary);
    background: linear-gradient(145deg, #245060, #1a3a4a);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 212, 255, 0.25);
}

.option-card.selected {
    border-color: var(--accent-primary);
    background: linear-gradient(145deg, rgba(0, 212, 255, 0.25), rgba(0, 212, 255, 0.1));
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.2), 0 12px 32px rgba(0, 212, 255, 0.3);
}

.option-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.option-label {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.option-desc {
    display: block;
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.5;
}

/* 选项列表 - 高对比度设计 */
.option-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.option-item {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.5rem;
    background: #ffffff;
    border: 2px solid #e5e7eb;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    width: 100%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.option-item:hover {
    border-color: var(--accent-primary);
    background: #f0f9ff;
    box-shadow: 0 8px 24px rgba(0, 212, 255, 0.15);
    transform: translateX(6px);
}

.option-item.selected {
    border-color: var(--accent-primary);
    background: linear-gradient(145deg, #e0f2fe, #bae6fd);
    box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.15), 0 8px 24px rgba(0, 212, 255, 0.15);
}

.item-radio {
    width: 28px;
    height: 28px;
    border: 3px solid #d1d5db;
    border-radius: 50%;
    flex-shrink: 0;
    transition: all 0.3s;
    background: #ffffff;
    position: relative;
}

.option-item:hover .item-radio {
    border-color: var(--accent-primary);
}

.option-item.selected .item-radio {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: inset 0 0 0 6px #ffffff;
}

.item-content {
    flex: 1;
}

.item-title {
    display: block;
    font-size: 1.125rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.item-desc {
    display: block;
    font-size: 1rem;
    color: #4b5563;
    line-height: 1.6;
}

/* 时间线选项 - 高对比度设计 */
.timeline-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
    padding-left: 1rem;
}

.timeline-options::before {
    content: '';
    position: absolute;
    left: 31px;
    top: 28px;
    bottom: 28px;
    width: 4px;
    background: linear-gradient(180deg, #00D4FF, #0891b2);
    border-radius: 2px;
    opacity: 0.6;
}

.timeline-option {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    padding: 1.5rem;
    background: #ffffff;
    border: 2px solid #e5e7eb;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    position: relative;
    z-index: 1;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.timeline-option:hover {
    background: #f0f9ff;
    border-color: var(--accent-primary);
    box-shadow: 0 8px 24px rgba(0, 212, 255, 0.15);
    transform: translateX(8px);
}

.timeline-option.selected {
    background: linear-gradient(145deg, #e0f2fe, #bae6fd);
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.15), 0 8px 24px rgba(0, 212, 255, 0.15);
}

.timeline-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #ffffff;
    border: 4px solid #d1d5db;
    margin-top: 2px;
    margin-left: 0;
    flex-shrink: 0;
    transition: all 0.3s;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.timeline-option:hover .timeline-dot {
    border-color: var(--accent-primary);
}

.timeline-option.selected .timeline-dot {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 6px rgba(0, 212, 255, 0.25);
}

.timeline-content {
    flex: 1;
}

.timeline-title {
    display: block;
    font-size: 1.125rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.timeline-desc {
    display: block;
    font-size: 1rem;
    color: #4b5563;
    line-height: 1.6;
}

/* 联系表单 V2 - 高对比度设计 */
.contact-form-v2 {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background: #ffffff;
    padding: 2rem;
    border-radius: 16px;
    border: 2px solid #e5e7eb;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.form-field label {
    font-size: 1rem;
    font-weight: 600;
    color: #1f2937;
}

.form-field .required {
    color: #dc2626;
    font-weight: 700;
}

.form-field input,
.form-field textarea {
    padding: 1rem 1.25rem;
    background: #f9fafb;
    border: 2px solid #d1d5db;
    border-radius: 12px;
    color: #1f2937;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

.form-field input:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.15), 0 4px 12px rgba(0, 212, 255, 0.1);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
    color: #9ca3af;
    font-weight: 400;
}

.form-field textarea {
    resize: vertical;
    min-height: 120px;
}

/* 完成状态 */
.completion-content {
    text-align: center;
    padding: 2rem;
}

.success-animation {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    color: #22c55e;
}

.checkmark {
    animation: checkmarkDraw 0.8s ease forwards;
}

@keyframes checkmarkDraw {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

.completion-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.completion-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.match-info {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50px;
}

.match-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.match-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-primary);
}

/* 导航按钮 */
.guide-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-primary);
}

.nav-btn {
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.nav-btn.secondary {
    background: linear-gradient(145deg, var(--surface-primary), var(--surface-hover));
    color: var(--text-primary);
    border: 2px solid var(--border-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.nav-btn.secondary:hover:not(:disabled) {
    background: linear-gradient(145deg, var(--surface-hover), var(--surface-primary));
    border-color: var(--accent-primary);
    box-shadow: 0 4px 16px rgba(0, 212, 255, 0.12);
    transform: translateY(-2px);
}

.nav-btn.secondary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    border-color: transparent;
}

.nav-btn.primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    border: 2px solid transparent;
    box-shadow: 0 4px 16px rgba(0, 212, 255, 0.25);
}

.nav-btn.primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0, 212, 255, 0.4);
}

/* ---------- 服务流程时间线 ---------- */
.process-section {
    padding: 6rem 2rem;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.process-timeline {
    position: relative;
    max-width: 1000px;
    margin: 4rem auto 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.timeline-track {
    display: none;
}

.timeline-item {
    position: relative;
    padding-left: 4rem;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.marker-number {
    position: relative;
    z-index: 1;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.marker-pulse {
    position: absolute;
    inset: 0;
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    animation: markerPulse 2s ease-in-out infinite;
}

@keyframes markerPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.5; }
}

.timeline-content {
    background: var(--surface-primary);
    border: 1px solid var(--border-primary);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.3s;
}

.timeline-content:hover {
    transform: translateX(5px);
    border-color: var(--accent-primary);
}

.timeline-icon {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
}

.timeline-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.timeline-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0.75rem;
}

.timeline-duration {
    font-size: 0.75rem;
    color: var(--accent-primary);
    font-weight: 500;
}

/* ---------- FAQ手风琴 ---------- */
.faq-section {
    padding: 6rem 2rem;
    background: var(--bg-primary);
}

.faq-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
    align-items: start;
}

.faq-header {
    position: sticky;
    top: calc(var(--navbar-height) + 2rem);
}

.faq-cta {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--surface-secondary);
    border-radius: 16px;
    text-align: center;
}

.faq-cta p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: var(--surface-primary);
    border: 1px solid var(--border-primary);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s;
}

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

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

.faq-icon {
    flex-shrink: 0;
    transition: transform 0.3s;
    color: var(--accent-primary);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-question[aria-expanded="true"] + .faq-answer {
    max-height: 300px;
    padding: 0 1.5rem 1.25rem;
}

.faq-answer p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ---------- 响应式适配 ---------- */
@media (max-width: 991px) {
    .faq-layout {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .faq-header {
        position: static;
        text-align: center;
    }
    
    .faq-cta {
        max-width: 300px;
        margin: 2rem auto 0;
    }
}

@media (max-width: 768px) {
    .contact-hero-v2 {
        padding: calc(var(--navbar-height) + 2rem) 1.5rem 4rem;
    }
    
    .quick-contact-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .quick-btn {
        justify-content: center;
    }
    
    .flip-card {
        height: 280px;
    }
    
    .guide-widget {
        padding: 1.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .process-timeline {
        grid-template-columns: 1fr;
    }
    
    .timeline-item {
        padding-left: 3.5rem;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .flip-cards-grid {
        grid-template-columns: 1fr;
    }
    
    .option-grid {
        grid-template-columns: 1fr;
    }
}

/* ---------- 微信弹窗 ---------- */
.wechat-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.wechat-modal.active {
    opacity: 1;
    visibility: visible;
}

.wechat-modal-content {
    background: var(--surface-primary);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    max-width: 320px;
    transform: scale(0.9);
    transition: transform 0.3s;
}

.wechat-modal.active .wechat-modal-content {
    transform: scale(1);
}

.wechat-modal-qr {
    width: 180px;
    height: 180px;
    margin: 0 auto 1rem;
    padding: 1rem;
    background: white;
    border-radius: 12px;
}

.wechat-modal-qr svg {
    width: 100%;
    height: 100%;
    color: var(--bg-primary);
}

.wechat-modal p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.wechat-modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s;
}

.wechat-modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
}