/* ============================================
   GEO Optimization Landing Page - Styles
   ============================================ */

/* CSS Variables */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #ec4899;
    --accent: #f43f5e;
    --dark: #0f172a;
    --dark-2: #1e293b;
    --gray-1: #334155;
    --gray-2: #64748b;
    --gray-3: #94a3b8;
    --gray-4: #cbd5e1;
    --gray-5: #e2e8f0;
    --gray-6: #f1f5f9;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-2: linear-gradient(135deg, var(--primary-dark) 0%, var(--accent) 100%);
    --shadow: 0 10px 40px rgba(99, 102, 241, 0.15);
    --shadow-lg: 0 20px 60px rgba(99, 102, 241, 0.2);
    --radius: 16px;
    --radius-sm: 8px;
    --radius-full: 9999px;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--dark);
    background: var(--white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-5);
    transition: all 0.3s ease;
}

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

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-size: 24px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-2);
    padding: 8px 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    transition: all 0.3s ease;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 120px 0 60px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%236366f1' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    z-index: -1;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 48px;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-text {
    flex: 1;
    min-width: 0;
    max-width: 520px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 1px;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease forwards;
}

.hero-title {
    font-size: clamp(36px, 5vw, 64px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--gray-2);
    max-width: 600px;
    margin: 0 0 40px;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: flex-start;
    flex-wrap: wrap;
    margin-bottom: 48px;
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

.hero-stats {
    display: flex;
    justify-content: flex-start;
    gap: 48px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.8s forwards;
    opacity: 0;
}

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

.stat-value {
    font-size: 48px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-2);
    margin-top: 4px;
}

/* Tool Download Card */
.tool-download-card {
    flex: 1.35;
    max-width: 560px;
    min-width: 360px;
    margin: 0;
    animation: fadeInUp 0.8s ease 1s forwards;
    opacity: 0;
}

.tool-download-inner {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    background: var(--white);
    border: 1px solid var(--gray-5);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tool-download-inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient);
    border-radius: 4px 0 0 4px;
}

.tool-download-inner:hover {
    border-color: var(--primary-light);
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.12);
}

.tool-download-icon {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    border-radius: 14px;
    overflow: hidden;
    background: rgba(99, 102, 241, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-download-icon img {
    width: 64px;
    height: 64px;
}

.tool-download-info {
    flex: 1;
    min-width: 0;
}

.tool-download-badge {
    display: inline-block;
    padding: 3px 10px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.tool-download-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.tool-version {
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-3);
    background: var(--gray-6);
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 6px;
}

.tool-download-desc {
    font-size: 14px;
    color: var(--gray-2);
    line-height: 1.6;
    margin-bottom: 14px;
}

.tool-download-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tool-download-features span {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.06);
    color: var(--primary);
    font-size: 12px;
    font-weight: 500;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.tool-download-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.tool-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    text-decoration: none;
}

.tool-download-btn small {
    font-size: 11px;
    font-weight: 400;
    opacity: 0.7;
}

.tool-download-btn.mac {
    background: var(--dark);
    color: white;
    border-color: var(--dark);
}

.tool-download-btn.mac:hover {
    background: var(--dark-2);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.3);
}

.tool-download-btn.win {
    background: var(--white);
    color: var(--primary);
    border-color: var(--primary);
}

.tool-download-btn.win:hover {
    background: rgba(99, 102, 241, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.2);
}

.tool-download-btn svg {
    flex-shrink: 0;
}

.tool-download-demo {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-5);
    font-size: 13px;
    color: var(--gray-2);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.tool-download-demo .demo-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

.tool-download-demo a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.tool-download-demo a:hover {
    color: var(--primary-dark);
}

.demo-hint {
    color: var(--gray-3);
    font-size: 12px;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-platforms {
    text-align: center;
    margin-top: auto;
    padding-top: 60px;
    color: var(--gray-2);
    font-size: 14px;
}

.platform-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--white);
    border: 1px solid var(--gray-5);
    border-radius: var(--radius-full);
    margin: 6px;
    font-weight: 500;
    color: var(--dark);
    transition: all 0.3s ease;
}

.platform-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--gradient);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: var(--white);
    color: var(--dark);
    border: 2px solid var(--gray-5);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn.large {
    padding: 18px 48px;
    font-size: 16px;
}

/* ============================================
   Section Common Styles
   ============================================ */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header.light .section-tag,
.section-header.light .section-title,
.section-header.light .section-desc {
    color: var(--white);
}

.section-header.light .section-tag {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 18px;
    color: var(--gray-2);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   What is GEO Section
   ============================================ */
.what-is-geo {
    background: var(--white);
}

.geo-definition {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 80px;
}

.definition-card {
    background: var(--white);
    border: 1px solid var(--gray-5);
    border-radius: var(--radius);
    padding: 32px;
    transition: all 0.3s ease;
}

.definition-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--primary-light);
}

.definition-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.definition-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--dark);
}

.definition-card p {
    color: var(--gray-2);
    line-height: 1.8;
}

.definition-card strong {
    color: var(--primary);
}

/* ============================================
   Why GEO Section
   ============================================ */
.why-geo-section {
    margin-top: 48px;
}

.why-geo-title {
    font-size: 28px;
    font-weight: 700;
    color: #0ea5e9;
    text-align: center;
    margin-bottom: 36px;
}

.why-geo-grid {
    display: flex;
    align-items: stretch;
    background: #fff;
    border: 1px solid var(--gray-5);
    border-radius: var(--radius);
    overflow: hidden;
    position: relative;
}

.why-geo-col {
    flex: 1;
    padding: 40px 32px;
    display: flex;
    flex-direction: column;
}

.why-geo-col-right {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.03), rgba(99, 102, 241, 0.04));
}

.why-geo-subtitle {
    font-size: 20px;
    font-weight: 600;
    color: #0ea5e9;
    text-align: center;
    margin-bottom: 24px;
}

.why-geo-header-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.ai-value-badge {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    color: white;
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-full);
    letter-spacing: 0.5px;
}

.why-geo-items {
    display: flex;
    flex-direction: column;
    gap: 28px;
    flex: 1;
}

.why-geo-item {
    display: flex;
    align-items: center;
    gap: 18px;
}

.why-geo-circle {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 800;
}

.circle-blue {
    border: 6px solid #0ea5e9;
    color: #0ea5e9;
}

.circle-red {
    border: 6px solid #ef4444;
    color: #ef4444;
}

.circle-blue-lg {
    width: 90px;
    height: 90px;
    border: 8px solid #3b82f6;
    color: #3b82f6;
    font-size: 26px;
}

.why-geo-highlight {
    flex-shrink: 0;
    font-size: 38px;
    font-weight: 800;
    color: #3b82f6;
    line-height: 1;
    min-width: 130px;
}

.why-geo-text {
    font-size: 15px;
    color: var(--gray-1);
    line-height: 1.65;
}

.why-geo-summary {
    margin-top: auto;
    padding-top: 24px;
    border-top: 2px solid var(--gray-5);
    font-size: 15px;
    color: var(--dark);
    line-height: 1.7;
}

.why-geo-divider {
    width: 1px;
    background: var(--gray-5);
}

.compare-section {
    background: var(--gray-6);
    border-radius: var(--radius);
    padding: 40px;
}

.compare-title {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 32px;
    color: var(--primary-dark);
}

.compare-layout {
    display: flex;
    gap: 32px;
    align-items: flex-start;
}

.compare-image {
    flex: 4;
    min-width: 0;
}

.compare-image img {
    width: 100%;
    display: block;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.compare-table-wrap {
    flex: 6;
    min-width: 0;
}

.compare-table {
    background: var(--white);
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--gray-5);
}

.compare-header,
.compare-row {
    display: grid;
    grid-template-columns: 1.5fr 2fr 2fr;
}

.compare-header {
    background: var(--dark);
    color: var(--white);
    font-weight: 600;
}

.compare-header .geo-col {
    background: var(--primary-dark);
}

.compare-col {
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-5);
}

.compare-row:last-child .compare-col {
    border-bottom: none;
}

.compare-row .geo-col {
    background: rgba(99, 102, 241, 0.05);
}

.compare-row:hover {
    background: var(--gray-6);
}

/* ============================================
   How to Do GEO Section
   ============================================ */
.how-to-do {
    background: var(--gray-6);
}

.process-timeline {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 80px;
}

.process-step {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    gap: 24px;
    align-items: center;
    background: var(--white);
    border-radius: var(--radius);
    padding: 32px;
    border: 1px solid var(--gray-5);
    transition: all 0.3s ease;
}

.process-step:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow);
}

.step-number {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    border-radius: 50%;
    font-size: 28px;
    font-weight: 800;
    color: var(--white);
}

.step-content h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--dark);
}

.step-content > p {
    color: var(--gray-2);
    margin-bottom: 16px;
}

.step-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.step-list li {
    padding: 6px 14px;
    background: var(--gray-6);
    border-radius: var(--radius-full);
    font-size: 13px;
    color: var(--gray-1);
}

.step-icon {
    font-size: 48px;
    opacity: 0.8;
}

.optimization-methods h3 {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 32px;
}

.methods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 16px;
}

.method-card {
    display: flex;
    gap: 16px;
    background: var(--white);
    border: 1px solid var(--gray-5);
    border-radius: var(--radius);
    padding: 20px;
    transition: all 0.3s ease;
}

.method-card:hover {
    border-color: var(--primary-light);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.1);
}

.method-num {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
    color: var(--white);
}

.method-card p {
    color: var(--gray-2);
    font-size: 14px;
    line-height: 1.6;
}

/* ============================================
   Publishing Section
   ============================================ */
.publishing {
    background: var(--white);
}

.platform-grid h3,
.distribution-channels h3 {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 32px;
}

.platform-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.platform-card {
    background: var(--white);
    border: 1px solid var(--gray-5);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.3s ease;
}

.platform-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.platform-header {
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.platform-header.deepseek {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: var(--white);
}

.platform-header.doubao {
    background: linear-gradient(135deg, #fe3c44 0%, #ff6b6b 100%);
    color: var(--white);
}

.platform-header.kimi {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: var(--white);
}

.platform-header.baidu {
    background: linear-gradient(135deg, #29323c 0%, #4a5568 100%);
    color: var(--white);
}

.platform-header.yuanbao {
    background: linear-gradient(135deg, #07c160 0%, #10b981 100%);
    color: var(--white);
}

.platform-name {
    font-size: 20px;
    font-weight: 700;
}

.platform-company {
    font-size: 13px;
    opacity: 0.8;
}

.platform-info {
    padding: 20px 24px;
}

.platform-info p {
    font-size: 14px;
    color: var(--gray-2);
    margin-bottom: 8px;
}

.platform-info p:last-child {
    margin-bottom: 0;
}

.platform-info strong {
    color: var(--dark);
}

.channel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.channel-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 24px 16px;
    background: var(--gray-6);
    border-radius: var(--radius);
    transition: all 0.3s ease;
}

.channel-item:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-4px);
}

.channel-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

.channel-name {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.channel-desc {
    font-size: 13px;
    opacity: 0.7;
}

/* ============================================
   GEO Service Process Section
   ============================================ */
.service-process {
    background: var(--gray-6);
    position: relative;
    overflow: hidden;
}

.service-process::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(ellipse at 20% 30%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(99, 102, 241, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

.service-process .section-title,
.service-process .section-desc {
    color: var(--dark);
}

.service-process .section-desc {
    color: var(--dark);
}

.process-flow {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    grid-template-rows: auto auto;
    gap: 24px;
    position: relative;
    max-width: 960px;
    margin: 0 auto;
}

.process-step-item {
    background: rgba(15, 30, 60, 0.75);
    border: 1px solid rgba(34, 211, 238, 0.15);
    border-radius: var(--radius);
    padding: 28px 24px;
    backdrop-filter: blur(8px);
    position: relative;
    z-index: 1;
}

.step-card-header {
    display: inline-block;
    padding: 5px 18px;
    border-radius: var(--radius-full);
    font-size: 16px;
    font-weight: 700;
    color: white;
    margin-bottom: 18px;
}

.step-blue { background: linear-gradient(135deg, #0ea5e9, #0369a1); }
.step-cyan { background: linear-gradient(135deg, #22d3ee, #06b6d4); }
.step-green { background: linear-gradient(135deg, #10b981, #059669); }
.step-orange { background: linear-gradient(135deg, #f59e0b, #d97706); }

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

.process-step-item .step-list li {
    color: #e2e8f0;
    font-size: 14px;
    line-height: 1.75;
    padding: 6px 12px 6px 20px;
    position: relative;
    margin-bottom: 8px;
    border-radius: 8px;
    background: rgba(34, 211, 238, 0.06);
}

.process-step-item .step-list li:last-child { margin-bottom: 0; }

.process-step-item .step-list li::before {
    content: '•';
    position: absolute;
    left: 7px;
    top: 5px;
    color: #22d3ee;
    font-weight: 700;
    font-size: 16px;
}

/* Center Icon */
.process-center-icon {
    grid-column: 2;
    grid-row: 1 / -1;
    align-self: center;
    justify-self: center;
    z-index: 2;
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        filter: drop-shadow(0 0 12px rgba(34, 211, 238, 0.4));
        transform: scale(1);
    }
    50% {
        filter: drop-shadow(0 0 24px rgba(34, 211, 238, 0.65));
        transform: scale(1.04);
    }
}

/* ============================================
   Advantages Section
   ============================================ */
.advantages {
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(99, 102, 241, 0.2) 0%, transparent 50%);
    pointer-events: none;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
    margin-bottom: 80px;
}

.advantage-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 32px;
    transition: all 0.3s ease;
}

.advantage-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
    border-color: var(--primary-light);
}

.advantage-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.advantage-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}

.advantage-card p {
    color: var(--gray-4);
    line-height: 1.8;
}

.case-preview {
    margin-top: 40px;
}

.case-preview h3 {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 32px;
    color: var(--white);
}

.case-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.case-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 24px;
}

.case-brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.case-result {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
}

.case-result.success {
    background: rgba(99, 102, 241, 0.1);
    margin: 8px -24px -24px;
    padding: 16px 24px;
    border-radius: 0 0 var(--radius) var(--radius);
}

.result-label {
    font-size: 13px;
    color: var(--gray-4);
}

.result-text {
    font-size: 14px;
    color: var(--white);
    font-weight: 500;
}

.case-result.success .result-text {
    color: #4ade80;
}

/* ============================================
   Packages Section
   ============================================ */
.packages {
    background: var(--gray-6);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.pricing-card {
    position: relative;
    background: var(--white);
    border: 1px solid var(--gray-5);
    border-radius: var(--radius);
    padding: 40px 32px;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    border: 2px solid var(--primary);
    transform: scale(1.02);
}

.pricing-card.featured:hover {
    transform: scale(1.02) translateY(-8px);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 20px;
    background: var(--gradient);
    color: var(--white);
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-full);
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--gray-5);
}

.pricing-name {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: 8px;
}

.price.currency {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
}

.price-value {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.price-period {
    font-size: 16px;
    color: var(--gray-2);
}

.pricing-desc {
    font-size: 14px;
    color: var(--gray-2);
}

.pricing-features {
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0;
    font-size: 15px;
    color: var(--gray-1);
}

.pricing-features .check {
    color: #22c55e;
    font-weight: 700;
}

.pricing-features .cross {
    color: var(--gray-3);
}

.pricing-btn {
    display: block;
    width: 100%;
    padding: 16px;
    text-align: center;
    background: var(--gray-6);
    color: var(--dark);
    font-weight: 600;
    border-radius: var(--radius);
    transition: all 0.3s ease;
}

.pricing-btn:hover {
    background: var(--primary);
    color: var(--white);
}

.pricing-btn.primary {
    background: var(--gradient);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.pricing-btn.primary:hover {
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
}

.pricing-note {
    text-align: center;
    font-size: 14px;
    color: var(--gray-2);
}

/* ============================================
   About Section
   ============================================ */
.about {
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.about-text p {
    color: var(--gray-2);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-text strong {
    color: var(--primary);
}

.about-list {
    margin-top: 20px;
}

.about-list li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 12px;
    color: var(--gray-2);
}

.about-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    background: var(--gradient);
    border-radius: 50%;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.about-stat {
    text-align: center;
    padding: 32px;
    background: var(--gray-6);
    border-radius: var(--radius);
    transition: all 0.3s ease;
}

.about-stat:hover {
    background: var(--primary);
    color: var(--white);
}

.about-stat-value {
    font-size: 48px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.about-stat:hover .about-stat-value {
    -webkit-text-fill-color: white;
    background: none;
}

.about-stat-label {
    font-size: 14px;
    color: var(--gray-2);
    margin-top: 8px;
}

.about-stat:hover .about-stat-label {
    color: rgba(255, 255, 255, 0.8);
}

.contact-section {
    text-align: center;
    padding: 60px;
    background: var(--dark);
    border-radius: var(--radius);
}

.contact-section h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}

.contact-section > p {
    color: var(--gray-4);
    margin-bottom: 32px;
}

.contact-methods {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.contact-icon {
    font-size: 32px;
}

.contact-label {
    font-size: 13px;
    color: var(--gray-4);
}

.contact-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--dark-2);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand .logo-icon {
    font-size: 28px;
}

.footer-brand .logo-text {
    font-size: 24px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    margin-top: 12px;
    color: var(--gray-4);
    font-size: 14px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 12px;
    color: var(--gray-4);
}

.footer-col ul li a {
    font-size: 14px;
    color: var(--gray-4);
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 14px;
    color: var(--gray-4);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-content {
        gap: 32px;
    }
    
    .hero-text {
        max-width: 100%;
    }
    
    .tool-download-card {
        min-width: 300px;
        max-width: 420px;
    }
    
    .hero-stats {
        gap: 32px;
    }
    
    .process-step {
        grid-template-columns: 60px 1fr;
        gap: 20px;
    }
    
    .step-icon {
        display: none;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* ============================================
   CTA Button at Section Bottom
   ============================================ */
.section-cta {
    text-align: center;
    margin-top: 40px;
}

.section-cta .btn {
    min-width: 240px;
}

/* ============================================
   Floating Contact Icon
   ============================================ */
.floating-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 9999;
    box-shadow: 0 6px 24px rgba(99, 102, 241, 0.4);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
}

.floating-contact:hover {
    transform: scale(1.12);
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.55);
}

.floating-contact::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid rgba(99, 102, 241, 0.3);
    animation: float-ring 2s ease-in-out infinite;
}

@keyframes float-ring {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.15); opacity: 0.3; }
}

/* ============================================
   Contact Modal
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

.modal-content {
    position: relative;
    background: #fff;
    border-radius: 20px;
    padding: 48px 40px 40px;
    width: 90%;
    max-width: 520px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2);
    transform: scale(0.92) translateY(16px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 14px;
    right: 18px;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    font-size: 26px;
    color: var(--gray-4);
    cursor: pointer;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: color 0.2s, background 0.2s;
}

.modal-close:hover {
    color: var(--dark);
    background: var(--gray-6);
}

.modal-header {
    text-align: center;
    margin-bottom: 32px;
}

.modal-icon {
    font-size: 36px;
    margin-bottom: 10px;
}

.modal-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 6px;
}

.modal-subtitle {
    font-size: 15px;
    color: var(--gray-3);
}

.modal-body {
    display: flex;
    align-items: center;
    gap: 28px;
}

.contact-info-list {
    flex: 1;
}

.contact-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
}

.contact-icon {
    font-size: 22px;
    flex-shrink: 0;
}

.contact-detail {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 13px;
    color: var(--gray-3);
    margin-bottom: 2px;
}

.contact-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
}

.contact-value.phone-num {
    color: var(--primary);
    letter-spacing: 0.5px;
}

.qr-code-wrap {
    flex-shrink: 0;
    text-align: center;
    background: var(--gray-6);
    border-radius: 16px;
    padding: 16px 12px 10px;
}

.qr-code-img {
    width: 130px;
    height: 130px;
    object-fit: contain;
    border-radius: 8px;
}

.qr-hint {
    font-size: 12px;
    color: var(--gray-3);
    margin-top: 8px;
    line-height: 1.5;
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    .hero {
        padding: 100px 0 40px;
    }
    
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-text {
        text-align: center;
    }
    
    .hero-subtitle {
        margin: 0 auto 40px;
    }
    
    .hero-buttons,
    .hero-stats {
        justify-content: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .tool-download-card {
        max-width: 100%;
        min-width: 0;
        width: 100%;
    }
    
    .stat-value {
        font-size: 36px;
    }
    
    .tool-download-inner {
        flex-direction: column;
        padding: 24px;
    }
    
    .tool-download-buttons {
        flex-direction: column;
    }
    
    .tool-download-btn {
        justify-content: center;
    }
    
    /* Why GEO Responsive */
    .why-geo-grid {
        flex-direction: column;
    }
    
    .why-geo-col {
        padding: 28px 20px;
    }
    
    .why-geo-col-right {
        background: none;
    }
    
    .why-geo-divider {
        display: block;
        width: auto;
        height: 1px;
    }
    
    .why-geo-item {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }
    
    .why-geo-text {
        text-align: center;
    }
    
    .why-geo-summary {
        text-align: center;
    }
    
    .why-geo-header-row {
        justify-content: center;
    }
    
    .compare-layout {
        flex-direction: column;
        gap: 24px;
    }
    
    .compare-image {
        flex: none;
        width: 100%;
    }
    
    .compare-table-wrap {
        flex: none;
        width: 100%;
    }
    
    /* Service Process Responsive */
    .process-flow {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .process-step-item {
        padding: 20px 18px;
    }
    
    .process-center-icon {
        display: none;
    }
    
    .compare-header,
    .compare-row {
        grid-template-columns: 1fr;
    }

    .compare-col {
        padding: 12px 16px;
    }
    
    .compare-header .compare-col {
        display: block;
        font-size: 13px;
        padding: 10px 16px;
    }
    
    .process-step {
        grid-template-columns: 1fr;
    }
    
    .step-number {
        width: 60px;
        height: 60px;
        font-size: 22px;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-8px);
    }
    
    .contact-methods {
        flex-direction: column;
        gap: 24px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .platform-cards {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

/* Mobile Menu */
.nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--gray-5);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    animation: slideDown 0.3s ease;
}

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