/* ============================================
   ROVEREST AQUAHUB - OPTIMIZED STYLESHEET
   Color Scheme: Roverest Blue (#00CCDB) + Neutral System
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ============================================
   GLOBAL MOBILE FIX - 防止所有水平溢出
   ============================================ */
html {
    overflow-x: hidden;
    width: 100%;
}

body {
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
}

* {
    box-sizing: border-box;
}

/* 仅在 480px 以下应用 max-width 限制 */

@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
        max-width: 100%;
        overflow-x: hidden;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
        max-width: 100%;
        overflow-x: hidden;
    }
    
    body, html {
        width: 100%;
        overflow-x: hidden;
    }
    
    section {
        overflow-x: hidden;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.75rem;
        max-width: 100%;
        overflow-x: hidden;
    }
    
    body, html {
        width: 100%;
        overflow-x: hidden;
    }
    
    section {
        overflow-x: hidden;
    }
    
    * {
        max-width: 100%;
    }
}


:root {
    --primary-color: #00CCDB;
    --primary-dark: #003F85;
    --primary-darker: #004B9E;
    --primary-medium: #0056D3;
    --primary-light: #0070E8;
    --primary-lighter: #4B9FFF;
    --primary-lightest: #86CEF2;
    --neutral-900: #0F0F0F;
    --neutral-800: #1a1a1a;
    --neutral-700: #2d2d2d;
    --neutral-600: #4a4a4a;
    --neutral-500: #6a6a6a;
    --neutral-400: #999999;
    --neutral-300: #cccccc;
    --neutral-200: #e6e6e6;
    --neutral-100: #f5f5f5;
    --neutral-0: #ffffff;
    --accent-red: #EA5C24;
    --accent-red-dark: #D63044;
    --dark-bg: #0F0F0F;
    --dark-secondary: #1a1a1a;
    --dark-tertiary: #2d2d2d;
    --text-light: #ffffff;
    --text-muted: #b0b0b0;
    --accent-blue: #1a3a3a;
    --border-color: #3a3a3a;
    --transition: all 0.3s ease;
}

html {
    overflow-x: hidden;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: 'Satoshi', 'Inter', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ============================================
   NAVIGATION BAR
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    box-shadow: 0 2px 8px rgba(0, 204, 219, 0.08);
}

.nav-container {
    max-width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: 2px;
    flex-shrink: 0;
    white-space: nowrap;
    margin-right: 3rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
    margin: 0;
    flex: 1;
    justify-content: center;
}

.nav-link {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    font-size: 0.95rem;
    display: inline-block;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    background-color: var(--primary-color);
    color: var(--dark-bg);
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    border: 2px solid var(--primary-color);
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 204, 219, 0.3);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
    margin-left: auto;
}

.language-switcher {
    position: relative;
}

.lang-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-light);
    padding: 0.5rem 0.75rem;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.lang-toggle:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(0, 204, 219, 0.2);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--dark-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    min-width: 160px;
    display: none;
    flex-direction: column;
    z-index: 1001;
    margin-top: 0.5rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.lang-dropdown.active {
    display: flex;
}

.lang-option {
    background: transparent;
    border: none;
    color: #ffffff;
    padding: 0.75rem 1rem;
    text-align: left;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    font-weight: 500;
}

.lang-option:hover {
    background-color: var(--dark-secondary);
    color: var(--primary-color);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-light);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    margin-top: 80px;
    min-height: 100vh;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(15, 15, 15, 0.7) 0%, rgba(15, 15, 15, 0.4) 50%, rgba(15, 15, 15, 0.1) 100%);
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 2;
    width: 100%;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    max-width: 600px;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-title-light {
    color: var(--text-light);
}

.hero-title-accent {
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    color: var(--text-light);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.hero-tagline {
    font-size: clamp(0.9rem, 2vw, 1.1rem);
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-style: italic;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.75rem 2rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    display: inline-block;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--dark-bg);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 204, 219, 0.3);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--dark-bg);
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 204, 219, 0.3);
    transform: translateY(-2px);
}

/* ============================================
   SECTION STYLING
   ============================================ */

section {
    padding: 5rem 0;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.section-subtitle {
    font-size: clamp(1rem, 2vw, 1.3rem);
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

/* ============================================
   PROBLEMS SECTION
   ============================================ */

.problems {
    background-color: var(--dark-bg);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.problem-card {
    background: linear-gradient(135deg, var(--dark-secondary) 0%, var(--dark-tertiary) 100%);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(0, 204, 219, 0.05);
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 204, 219, 0.15);
}

.problem-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.problem-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--text-light);
}

.problem-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ============================================
   ONE-STOP SOLUTION SECTION (REDESIGNED)
   ============================================ */

.solution {
    background-color: var(--dark-secondary);
}

.solution-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.solution-product-section {
    display: flex;
    justify-content: center;
    align-items: center;
}

.solution-product-wrapper {
    display: flex;
    justify-content: center;
}

.solution-product-image {
    max-width: 100%;
    height: auto;
    max-height: 400px;
    filter: drop-shadow(0 15px 40px rgba(0, 204, 219, 0.25));
    animation: float 3s ease-in-out infinite;
}

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

.solution-benefits-section {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.solution-benefits-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.benefit-item {
    text-align: center;
    padding: 2rem 1.5rem;
    position: relative;
    transition: var(--transition);
}

.benefit-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    border-radius: 2px;
}

.benefit-item:hover {
    transform: translateY(-5px);
}

.benefit-item .benefit-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
    transition: var(--transition);
}

.benefit-item:hover .benefit-icon {
    transform: scale(1.1);
}

.benefit-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--text-light);
    font-weight: 700;
}

.benefit-item p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ============================================
   FEATURES DETAILED SECTION
   ============================================ */

.features-detailed {
    background-color: var(--dark-bg);
}

.features-detailed > .container {
    overflow-x: hidden;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    align-items: stretch;
    grid-auto-rows: 1fr;
}

.features-detailed > .container .feature-detail-block {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.features-detailed > .container .feature-detail-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    flex: 1;
}

.features-detailed > .container .feature-detail-text {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.feature-detail-block {
    margin-bottom: 0;
    padding: 0;
    background: transparent;
    border-radius: 0;
    border-left: none;
    display: block;
}

.feature-detail-block.feature-detail-2,
.feature-detail-block.feature-detail-4 {
    direction: ltr;
}

.feature-detail-block.feature-detail-2 > *,
.feature-detail-block.feature-detail-4 > * {
    direction: ltr;
}

.feature-detail-block .feature-detail-content {
    background: linear-gradient(135deg, var(--dark-secondary) 0%, var(--dark-tertiary) 100%);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    padding: 3rem;
}

.feature-detail-block .feature-detail-visual {
    background: linear-gradient(135deg, rgba(0, 204, 219, 0.05) 0%, rgba(0, 204, 219, 0.02) 100%);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    padding: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    color: var(--text-muted);
    font-size: 1rem;
    text-align: center;
}

.feature-detail-content {
    position: relative;
}

.feature-number {
    font-size: 4rem;
    font-weight: 800;
    color: rgba(0, 204, 219, 0.1);
    position: absolute;
    top: -20px;
    left: -10px;
    z-index: 0;
}

.feature-detail-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 2rem;
    color: var(--text-light);
    position: relative;
    z-index: 1;
}

.feature-detail-title span {
    display: block;
    margin-bottom: 0.5rem;
}

.feature-detail-title span:first-child {
    color: var(--primary-color);
    font-weight: 800;
}

.feature-detail-content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.feature-detail-text h4 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    margin-top: 1.5rem;
}

.feature-detail-text h4:first-child {
    margin-top: 0;
}

.feature-detail-text ul {
    list-style: none;
    margin-bottom: 1.5rem;
}

.feature-detail-text li {
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
}

.feature-detail-text li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.feature-diagram {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-stage {
    background-color: var(--dark-bg);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
    min-width: 80px;
}

.filter-arrow {
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

.heating-modes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.heating-mode {
    background-color: var(--dark-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.heating-mode .mode-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.heating-mode p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.pressure-levels {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 1rem;
}

.pressure-levels .level {
    background-color: var(--dark-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 3px solid var(--primary-color);
}

.pressure-levels .level strong {
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.5rem;
}

.pressure-levels .level p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.pressure-levels .level-icon {
    font-size: 1.5rem;
    margin-right: 0.75rem;
    display: inline-block;
}

/* Feature List Items */
.features-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-list-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem;
    background-color: rgba(0, 204, 219, 0.03);
    border-left: 3px solid var(--primary-color);
    border-radius: 8px;
    transition: var(--transition);
}

.feature-list-item:hover {
    background-color: rgba(0, 204, 219, 0.08);
    transform: translateX(5px);
}

.list-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    line-height: 1.5;
}

.feature-list-item p {
    margin: 0;
}

.feature-list-item strong {
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.25rem;
}

.list-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

/* Efficiency Comparison Table */
.efficiency-comparison {
    margin: 2rem 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.efficiency-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--dark-secondary);
    border-radius: 8px;
    overflow: hidden;
}

.efficiency-table thead {
    background-color: rgba(0, 204, 219, 0.1);
}

.efficiency-table th {
    color: var(--primary-color);
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
    border-bottom: 2px solid var(--border-color);
}

.efficiency-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.efficiency-table tbody tr:hover {
    background-color: rgba(0, 204, 219, 0.05);
}

.efficiency-table tbody tr:last-child td {
    border-bottom: none;
}

.improvement-badge {
    display: inline-block;
    background-color: rgba(0, 204, 219, 0.15);
    color: var(--primary-color);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.85rem;
    white-space: nowrap;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-item {
    text-align: center;
    padding: 1.5rem;
    background-color: rgba(0, 204, 219, 0.03);
    border-radius: 8px;
    border: 1px solid rgba(0, 204, 219, 0.1);
    transition: var(--transition);
}

.feature-item:hover {
    background-color: rgba(0, 204, 219, 0.08);
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

.feature-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.75rem;
}

.feature-item p {
    margin: 0.5rem 0;
}

.feature-item strong {
    color: var(--primary-color);
    display: block;
}

.feature-desc {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.usage-scenarios {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.scenario {
    background-color: var(--dark-bg);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.deployment-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.deployment-stats .stat {
    background-color: var(--dark-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.deployment-stats .stat strong {
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.75rem;
}

.deployment-stats .stat p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.deployment-stats .old {
    text-decoration: line-through;
    color: var(--neutral-500);
}

.deployment-stats .new {
    color: var(--primary-color);
    font-weight: 600;
}

.experience-benefits {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.benefit-item {
    background-color: var(--dark-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.benefit-label {
    display: block;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.benefit-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ============================================
   COMPARISON SECTION
   ============================================ */

.comparison {
    background-color: var(--dark-secondary);
}

.comparison-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-top: 2rem;
}


/* Comparison Table - New Three-Column Layout */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--dark-secondary);
    border-radius: 8px;
    overflow: hidden;
}

.comparison-table thead {
    background-color: rgba(0, 204, 219, 0.15);
}

.comparison-table th {
    color: var(--primary-color);
    padding: 1.5rem;
    text-align: left;
    font-weight: 600;
    font-size: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.table-header-dimension {
    width: 25%;
}

.table-header-traditional {
    width: 37.5%;
}

.table-header-aquahub {
    width: 37.5%;
}

.comparison-table td {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.dimension-col {
    width: 25%;
    font-weight: 600;
    color: var(--text-light);
    background-color: rgba(0, 204, 219, 0.05);
}

.dimension-col strong {
    color: var(--primary-color);
}

.traditional-col {
    width: 37.5%;
    background-color: rgba(0, 0, 0, 0.2);
}

.aquahub-col {
    width: 37.5%;
    background-color: rgba(0, 204, 219, 0.08);
    border-left: 3px solid var(--primary-color);
}

.aquahub-col strong {
    color: var(--primary-color);
}

.comparison-table tbody tr:hover {
    background-color: rgba(0, 204, 219, 0.05);
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    .comparison-table {
        font-size: 0.85rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 1rem;
    }
    
    .table-header-dimension,
    .dimension-col {
        width: 30%;
    }
    
    .table-header-traditional,
    .traditional-col {
        width: 35%;
    }
    
    .table-header-aquahub,
    .aquahub-col {
        width: 35%;
    }
}


.comparison-table thead {
    background-color: var(--dark-tertiary);
    border-bottom: 2px solid var(--border-color);
}

.comparison-table th {
    padding: 1.5rem;
    text-align: left;
    color: var(--text-light);
    font-weight: 600;
    border-right: 1px solid var(--border-color);
}

.comparison-table th:last-child {
    border-right: none;
}

.comparison-table td {
    padding: 1.5rem;
    border-right: 1px solid var(--border-color);
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

.comparison-table td:last-child {
    border-right: none;
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

.comparison-table td.highlight {
    color: var(--primary-color);
    font-weight: 600;
}

/* AquaHub Column Highlight */
.comparison-table.aquahub-highlight .right-col {
    background-color: rgba(0, 204, 219, 0.08);
    border-left: 2px solid var(--primary-color);
    position: relative;
}

.comparison-table.aquahub-highlight .right-col strong {
    color: var(--primary-color);
    font-weight: 700;
}

.comparison-table.aquahub-highlight .right-col p {
    color: var(--text-light);
}

/* Add glow effect to right column */
.comparison-table.aquahub-highlight .right-col {
    box-shadow: inset 0 0 20px rgba(0, 204, 219, 0.1), 0 0 15px rgba(0, 204, 219, 0.05);
    transition: all 0.3s ease;
}

.comparison-table.aquahub-highlight tbody tr:hover .right-col {
    box-shadow: inset 0 0 25px rgba(0, 204, 219, 0.15), 0 0 20px rgba(0, 204, 219, 0.1);
    background-color: rgba(0, 204, 219, 0.12);
}

/* ============================================
   STORY SECTION
   ============================================ */

.story {
    background-color: var(--dark-bg);
}

.story-content {
    max-width: 900px;
    margin: 0 auto;
}

.story-text h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    margin-top: 2rem;
}

.story-text h3:first-child {
    margin-top: 0;
}

.story-text p {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* ============================================
   PRICING SECTION
   ============================================ */

.pricing {
    background-color: var(--dark-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.pricing-card {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-tertiary) 100%);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(0, 204, 219, 0.15);
}

.pricing-card.featured {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.pricing-card.featured .badge {
    transform: translateX(-50%);
}

.badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-color);
    color: var(--dark-bg);
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
}

.price {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.currency {
    font-size: 1.2rem;
    color: var(--primary-color);
}

.amount {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-light);
}

.original {
    font-size: 1rem;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-left: auto;
}

.early-bird {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.features-list {
    list-style: none;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.features-list li {
    color: var(--text-muted);
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
    position: relative;
    padding-left: 1.5rem;
}

.features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.features-list li:last-child {
    border-bottom: none;
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */

.testimonials {
    background-color: var(--dark-bg);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: linear-gradient(135deg, var(--dark-secondary) 0%, var(--dark-tertiary) 100%);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 204, 219, 0.1);
}

.stars {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.testimonial-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.author {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
}

/* ============================================
   SUBSCRIBE SECTION
   ============================================ */

.subscribe {
    background: linear-gradient(135deg, var(--dark-secondary) 0%, var(--dark-tertiary) 100%);
}

.subscribe-form {
    max-width: 600px;
    margin: 2rem auto;
}

.form-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.form-input {
    flex: 1;
    min-width: 250px;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 25px;
    background-color: var(--dark-bg);
    color: var(--text-light);
    font-size: 1rem;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 15px rgba(0, 204, 219, 0.2);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.subscribe-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.benefit {
    text-align: center;
}

.benefit-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.benefit p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background-color: var(--dark-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
}

.footer-section a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
    .solution-center-layout {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
        min-height: auto;
    }

    .solution-product-center {
        grid-column: 1 / 3;
        grid-row: auto;
        margin: 2rem 0;
    }

    .solution-benefit-top-left,
    .solution-benefit-top-right,
    .solution-benefit-bottom-left,
    .solution-benefit-bottom-right {
        grid-column: auto;
        grid-row: auto;
    }

    .feature-detail-content-grid {
        grid-template-columns: 1fr;
    }

    .deployment-stats,
    .experience-benefits,
    .usage-scenarios {
        grid-template-columns: 1fr;
    }

    .pricing-card.featured {
        transform: scale(1);
    }

    .pricing-card.featured:hover {
        transform: translateY(-10px);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .nav-actions {
        display: none;
    }

    .hamburger {
        display: flex;
        margin-left: auto;
    }

    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--dark-secondary);
        padding: 1rem;
        gap: 0.5rem;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .problems-grid {
        grid-template-columns: 1fr;
    }

    .solution-center-layout {
        grid-template-columns: 1fr;
    }

    .form-group {
        flex-direction: column;
    }

    .form-input {
        min-width: 100%;
    }

    .comparison-table {
        font-size: 0.85rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 1rem;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .feature-detail-block {
        padding: 1.5rem;
    }

    .feature-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    * {
        max-width: 100%;
    }
    
    body, html {
        overflow-x: hidden;
        width: 100%;
    }
    
    .container {
        width: 100%;
        max-width: 100%;
        padding: 0 1rem;
        overflow-x: hidden;
    }
    
    .hero-content {
        padding: 2rem 1rem;
    }
    
    .btn {
        width: 100%;
        padding: 1rem 2rem;
        min-height: 56px;
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
}

    .hero {
        margin-top: 60px;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .btn {
        padding: 0.6rem 1.5rem;
        font-size: 0.9rem;
    }

    .pricing-card {
        padding: 1.5rem;
    }

    .amount {
        font-size: 2rem;
    }

    .subscribe-benefits {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

/* Mobile responsive for One-Stop Solution */
@media (max-width: 768px) {
    .solution-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .solution-benefits-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    
    .benefit-item {
        padding: 1.5rem 1rem;
    }
    
    .benefit-item h3 {
        font-size: 1.1rem;
    }
    
    .benefit-item p {
        font-size: 0.9rem;
    }
    
    .benefit-item .benefit-icon {
        font-size: 2.5rem;
    }
}

/* Comparison Section - New Layout */
.comparison-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr 1fr;
    gap: 2rem;
    max-width: 1600px;
    margin: 0 auto;
}

.comparison-column {
    padding: 2rem;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(0, 204, 219, 0.05) 0%, rgba(0, 204, 219, 0.02) 100%);
    border: 1px solid rgba(0, 204, 219, 0.1);
}

.comparison-column.aquahub {
    background: linear-gradient(135deg, rgba(0, 204, 219, 0.1) 0%, rgba(0, 204, 219, 0.05) 100%);
    border: 1px solid rgba(0, 204, 219, 0.2);
}

.comparison-header {
    margin-bottom: 1.5rem;
    text-align: center;
}

.comparison-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

.comparison-header p {
    font-size: 0.9rem;
    color: #999;
}

.comparison-content p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #ccc;
}

.comparison-subtitle {
    font-weight: 600;
    color: #00CCDB;
    margin-bottom: 0.5rem;
}

.comparison-middle {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.comparison-arrow {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: #00CCDB;
}

.comparison-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.comparison-item {
    padding: 1.5rem;
    background: rgba(26, 26, 26, 0.5);
    border-radius: 8px;
    border-left: 3px solid #00CCDB;
}

.item-label {
    font-weight: 600;
    color: #00CCDB;
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
}

.item-traditional {
    font-size: 0.85rem;
    color: #999;
    margin-bottom: 0.5rem;
}

.item-aquahub {
    font-size: 0.85rem;
    color: #00CCDB;
    margin-bottom: 0.5rem;
}

.item-description {
    font-size: 0.8rem;
    color: #666;
}

/* Mobile responsive */
@media (max-width: 1024px) {
    .comparison-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .comparison-middle {
        order: 2;
    }
}

@media (max-width: 768px) {
    .comparison-column {
        padding: 1.5rem;
    }
    
    .comparison-header h3 {
        font-size: 1.1rem;
    }
    
    .comparison-item {
        padding: 1rem;
    }
}


/* Efficiency Comparison Table in Feature 4 */
.efficiency-comparison {
    margin: 2rem 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.efficiency-table {
    width: 100%;
    border-collapse: collapse;
    background: transparent;
    border-radius: 0;
    overflow: hidden;
    border: none;
}

.efficiency-table thead {
    background: transparent;
    border-bottom: 2px solid var(--primary-color);
}

.efficiency-table th {
    padding: 1rem 1.5rem;
    text-align: left;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    text-transform: capitalize;
}

.efficiency-table td {
    padding: 1.2rem 1.5rem;
    border-bottom: 1px solid rgba(0, 204, 219, 0.1);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.efficiency-table tbody tr {
    transition: background-color 0.3s ease;
}

.efficiency-table tbody tr:hover {
    background-color: rgba(0, 204, 219, 0.03);
}

.efficiency-table tbody tr:last-child td {
    border-bottom: none;
}

.metric-col {
    font-weight: 600;
    color: var(--text-light);
    width: 20%;
    min-width: 100px;
}

.traditional-col {
    color: var(--text-muted);
    width: 25%;
    min-width: 120px;
}

.aquahub-col {
    color: var(--primary-color);
    font-weight: 500;
    width: 25%;
    min-width: 120px;
}

.improvement-col {
    text-align: center;
    width: 30%;
    min-width: 140px;
}

.improvement-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: transparent;
    border: none;
    border-radius: 0;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.improvement-check {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: transparent;
    border: none;
    border-radius: 0;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

@media (max-width: 1024px) {
    .efficiency-table th,
    .efficiency-table td {
        padding: 1rem 1.2rem;
        font-size: 0.85rem;
    }
}

@media (max-width: 768px) {
    .efficiency-table {
        font-size: 0.8rem;
    }
    
    .efficiency-table th,
    .efficiency-table td {
        padding: 0.8rem 0.6rem;
    }
    
    .metric-col {
        width: 30%;
        min-width: 80px;
    }
    
    .traditional-col,
    .aquahub-col {
        width: 20%;
        min-width: 70px;
    }
    
    .improvement-col {
        width: 30%;
        min-width: 80px;
    }
}

@media (max-width: 480px) {
    * {
        max-width: 100%;
    }
    
    body, html {
        overflow-x: hidden;
        width: 100%;
    }
    
    .container {
        width: 100%;
        max-width: 100%;
        padding: 0 1rem;
        overflow-x: hidden;
    }
    
    .hero-content {
        padding: 2rem 1rem;
    }
    
    .btn {
        width: 100%;
        padding: 1rem 2rem;
        min-height: 56px;
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
}
    
    .efficiency-table {
        min-width: 100%;
    }
    
    .efficiency-table th,
    .efficiency-table td {
        padding: 0.7rem 0.5rem;
        font-size: 0.75rem;
    }
}


/* ========== Enhanced Responsive Design ========== */

/* Desktop Layout (1200px and above) */
@media (min-width: 1200px) {
    .container {
        max-width: 1200px;
        padding: 0 2rem;
    }
    
    .features-detailed > .container {
    overflow-x: hidden;
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }
    
    .feature-detail-block {
        margin-bottom: 3rem;
    }
}

/* Tablet Layout (768px to 1199px) */
@media (min-width: 768px) and (max-width: 1199px) {
    .container {
        max-width: 100%;
        padding: 0 1.5rem;
    }
    
    .features-detailed > .container {
    overflow-x: hidden;
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .feature-detail-block {
        margin-bottom: 2rem;
    }
    
    .feature-detail-content {
        padding: 2rem;
    }
    
    .feature-detail-title {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 0.8rem;
        font-size: 0.85rem;
    }
}

/* Mobile Layout (480px to 767px) */
@media (min-width: 480px) and (max-width: 767px) {
    .container {
        max-width: 100%;
        padding: 0 1rem;
    }
    
    .features-detailed > .container {
    overflow-x: hidden;
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .feature-detail-block {
        margin-bottom: 1.5rem;
    }
    
    .feature-detail-content {
        padding: 1.5rem;
    }
    
    .feature-detail-title {
        font-size: 1.25rem;
        margin-bottom: 1rem;
    }
    
    .feature-number {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
    }
    
    .comparison-table {
        font-size: 0.8rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 0.6rem;
    }
    
    .btn {
        padding: 0.7rem 1.5rem;
        font-size: 0.9rem;
    }
}

/* Small Mobile Layout (below 480px) */
@media (max-width: 479px) {
    .container {
        max-width: 100%;
        padding: 0 0.75rem;
    }
    
    .features-detailed > .container {
    overflow-x: hidden;
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .feature-detail-block {
        margin-bottom: 1rem;
    }
    
    .feature-detail-content {
        padding: 1rem;
    }
    
    .feature-detail-title {
        font-size: 1.1rem;
        margin-bottom: 0.8rem;
    }
    
    .feature-detail-title span {
        margin-bottom: 0.3rem;
    }
    
    .feature-number {
        font-size: 2rem;
        top: -10px;
        left: -5px;
    }
    
    .section-title {
        font-size: 1.3rem;
        margin-bottom: 1.5rem;
    }
    
    .hero {
        margin-top: 50px;
        padding: 2rem 0;
    }
    
    .hero-title {
        font-size: 1.5rem;
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: 0.85rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .comparison-table {
        font-size: 0.75rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 0.5rem;
    }
    
    .comparison-table th {
        font-size: 0.7rem;
    }
    
    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.85rem;
        width: 100%;
    }
    
    .btn-group {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .problems-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .form-group {
        flex-direction: column;
    }
    
    .form-input {
        min-width: 100%;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .feature-item {
        padding: 1rem;
    }
    
    .feature-icon {
        font-size: 2rem;
    }
}

/* Landscape Mobile (max-height: 500px) */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: 1rem 0;
        margin-top: 40px;
    }
    
    .hero-title {
        font-size: 1.3rem;
        margin-bottom: 0.5rem;
    }
    
    .hero-subtitle {
        font-size: 0.8rem;
        margin-bottom: 1rem;
    }
    
    .section-title {
        font-size: 1.2rem;
        margin-bottom: 1rem;
    }
}

/* Touch-friendly spacing for mobile */
@media (hover: none) and (pointer: coarse) {
    button,
    .btn,
    a {
        min-height: 44px;
        min-width: 44px;
    }
    
    .feature-item,
    .pricing-card,
    .problem-card {
        padding: 1.2rem;
    }
}


@media (max-width: 768px) {
    .solution-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .solution-benefits-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.8rem;
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .benefit-item {
        padding: 1.2rem 0.8rem;
        max-width: 100%;
        overflow: hidden;
    }
    
    .benefit-item h3 {
        font-size: 1rem;
    }
    
    .benefit-item p {
        font-size: 0.85rem;
    }
    
    .benefit-item .benefit-icon {
        font-size: 2.2rem;
    }
}

@media (max-width: 480px) {
    .solution-layout {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .solution-product-section {
        display: none;
    }
    
    .solution-benefits-section {
        width: 100%;
    }
    
    .solution-benefits-grid {
        grid-template-columns: 1fr;
        gap: 0.8rem;
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .benefit-item {
        padding: 1rem 0.75rem;
        max-width: 100%;
        overflow: hidden;
    }
    
    .benefit-item h3 {
        font-size: 0.95rem;
    }
    
    .benefit-item p {
        font-size: 0.8rem;
    }
    
    .benefit-item .benefit-icon {
        font-size: 2rem;
        margin-bottom: 0.5rem;
    }
}


@media (max-width: 768px) {
    .features-detailed > .container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        overflow-x: hidden;
    }
    
    .feature-detail-block {
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .feature-detail-content {
        padding: 1.5rem 1rem;
    }
}

@media (max-width: 480px) {
    .features-detailed > .container {
        grid-template-columns: 1fr;
        gap: 1rem;
        overflow-x: hidden;
    }
    
    .feature-detail-block {
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .feature-detail-content {
        padding: 1rem 0.75rem;
    }
    
    .feature-detail-title {
        font-size: 1.3rem;
    }
    
    .feature-detail-text {
        font-size: 0.9rem;
    }
}


@media (max-width: 768px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        overflow-x: hidden;
    }
    
    .pricing-card {
        max-width: 100%;
        overflow-x: hidden;
    }
}

@media (max-width: 480px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        overflow-x: hidden;
    }
    
    .pricing-card {
        max-width: 100%;
        overflow-x: hidden;
        padding: 1.5rem 1rem;
    }
}


/* ============================================
   HERO SECTION - PC 端修复
   ============================================ */
@media (min-width: 1025px) {
    .hero-content h1 {
        font-size: 3.5rem;
        line-height: 1.2;
    }
    
    .hero-content h2 {
        font-size: 1.5rem;
    }
    
    .hero-content p {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        gap: 1rem;
    }
    
    .btn {
        padding: 1rem 2.5rem;
        font-size: 1rem;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .hero-content h1 {
        font-size: 2.8rem;
    }
    
    .hero-content h2 {
        font-size: 1.3rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
}


/* ============================================
   导航栏修复
   ============================================ */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
}

@media (min-width: 1025px) {
    header {
        padding: 1rem 2rem;
    }
    
    nav {
        display: flex;
        gap: 2rem;
    }
}


/* ============================================