/* ============================================
   彩言科技官网 - 科技感暗黑主题 v2.0
   ============================================ */

/* === CSS Variables === */
:root {
    --bg-primary: #050a15;
    --bg-secondary: #0a1128;
    --bg-card: #0d1b2a;
    --bg-card-hover: #112240;
    --border-color: rgba(0, 242, 254, 0.1);
    --border-hover: rgba(0, 242, 254, 0.3);
    --text-primary: #e0e6ed;
    --text-secondary: #8892a4;
    --text-muted: #5a6477;
    --accent-cyan: #00f2fe;
    --accent-blue: #4facfe;
    --accent-purple: #a855f7;
    --accent-green: #43e97b;
    --accent-pink: #f093fb;
    --gradient-main: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #a855f7 100%);
    --gradient-warm: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-blue: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-green: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --shadow-glow: 0 0 40px rgba(0, 242, 254, 0.1);
    --font-main: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --nav-height: 72px;
    --container-width: 1200px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 120px 0;
    position: relative;
}

.section-alt {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

/* === Section Headers === */
.section-header {
    text-align: center;
    margin-bottom: 72px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent-cyan);
    background: rgba(0, 242, 254, 0.08);
    border: 1px solid rgba(0, 242, 254, 0.2);
    padding: 6px 20px;
    border-radius: 50px;
    margin-bottom: 20px;
    font-weight: 500;
}

.section-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    margin-bottom: 16px;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto;
    line-height: 1.8;
}

/* === Navigation === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled,
.navbar.navbar-solid {
    background: rgba(5, 10, 21, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 20px;
    z-index: 1001;
}

.logo-text {
    background: var(--gradient-blue);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 400;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-cyan);
    background: rgba(0, 242, 254, 0.06);
}

/* Dropdown Navigation */
.nav-dropdown {
    position: relative;
}

.dropdown-arrow {
    transition: transform 0.3s ease;
    opacity: 0.5;
}

.nav-dropdown:hover .dropdown-arrow,
.nav-dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
    opacity: 1;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 340px;
    background: rgba(13, 27, 42, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 242, 254, 0.05);
    z-index: 100;
}

.dropdown-menu-sm {
    min-width: 280px;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-radius: 12px;
    transition: var(--transition);
}

.dropdown-item:hover {
    background: rgba(0, 242, 254, 0.06);
}

.dropdown-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    color: var(--accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 242, 254, 0.08);
    border-radius: 10px;
    padding: 6px;
}

.dropdown-text {
    display: flex;
    flex-direction: column;
}

.dropdown-text strong {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.dropdown-text small {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 13px;
    border-radius: 8px;
}

.btn-lg {
    padding: 16px 40px;
    font-size: 16px;
}

.nav-cta-wrap {
    margin-left: 8px;
}

/* Nav Toggle (Mobile) */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* === Hero === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: var(--nav-height);
}

#particleCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 50%, rgba(0, 242, 254, 0.05) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 50%, rgba(168, 85, 247, 0.04) 0%, transparent 50%);
    z-index: 1;
    animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-2%, 2%) scale(1.05); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 0 24px;
}

.hero-badge {
    display: inline-block;
    font-size: 13px;
    letter-spacing: 2px;
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 242, 254, 0.3);
    padding: 8px 24px;
    border-radius: 50px;
    margin-bottom: 32px;
    background: rgba(0, 242, 254, 0.05);
}

.hero-title {
    font-size: clamp(36px, 7vw, 72px);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

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

.hero-desc {
    font-size: clamp(15px, 2vw, 18px);
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-blue);
    color: #050a15;
    box-shadow: 0 4px 20px rgba(0, 242, 254, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 242, 254, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(0, 242, 254, 0.05);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

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

.stat-num {
    font-size: 36px;
    font-weight: 900;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-unit {
    font-size: 16px;
    color: var(--accent-cyan);
    font-weight: 500;
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, transparent, var(--border-color), transparent);
    align-self: center;
}

/* Hero Scroll */
.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    text-align: center;
}

.hero-scroll span {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    margin: 0 auto;
    border-right: 2px solid var(--accent-cyan);
    border-bottom: 2px solid var(--accent-cyan);
    transform: rotate(45deg);
    animation: scrollBounce 2s ease-in-out infinite;
    opacity: 0.6;
}

@keyframes scrollBounce {
    0%, 100% { transform: rotate(45deg) translateY(0); opacity: 0.6; }
    50% { transform: rotate(45deg) translateY(8px); opacity: 1; }
}

/* === Advantages Grid === */
.adv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.adv-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px 32px;
    transition: var(--transition);
}

.adv-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.adv-icon-wrap {
    width: 56px;
    height: 56px;
    color: var(--accent-cyan);
    margin-bottom: 20px;
}

.adv-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.adv-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* === Product Grid === */
.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.product-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px 32px;
    transition: var(--transition);
    overflow: hidden;
    display: block;
}

.product-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-main);
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .card-glow { opacity: 1; }

.card-icon {
    width: 56px;
    height: 56px;
    color: var(--accent-cyan);
    margin-bottom: 20px;
}

.icon-geo { color: var(--accent-blue); }
.icon-invoice { color: var(--accent-green); }
.icon-video { color: var(--accent-purple); }
.icon-distribute { color: var(--accent-pink); }

.card-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
}

.card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.card-tags span {
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 50px;
    background: rgba(0, 242, 254, 0.06);
    border: 1px solid rgba(0, 242, 254, 0.15);
    color: var(--accent-cyan);
}

.card-link {
    font-size: 14px;
    color: var(--accent-cyan);
    font-weight: 500;
    transition: var(--transition);
}

.product-card:hover .card-link { letter-spacing: 1px; }

/* === Highlights Grid === */
.highlights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.hl-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.hl-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.hl-num {
    font-size: 48px;
    font-weight: 900;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.15;
    position: absolute;
    top: 16px;
    right: 24px;
    line-height: 1;
}

.hl-card h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.hl-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* === Clients Section === */
.clients-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.client-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition);
}

.client-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.client-logo-placeholder {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.1), rgba(79, 172, 254, 0.1));
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 13px;
    color: var(--accent-cyan);
    font-weight: 600;
}

.client-card h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.client-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
    text-align: left;
}

.client-tags {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}

.client-tags span {
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 50px;
    background: rgba(0, 242, 254, 0.06);
    border: 1px solid rgba(0, 242, 254, 0.15);
    color: var(--accent-cyan);
}

/* Trust bar */
.clients-trust-bar {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 14px;
}

.trust-item svg {
    color: var(--accent-cyan);
    flex-shrink: 0;
}

/* === CTA Section === */
.cta-section {
    padding: 80px 0;
}

.cta-box {
    text-align: center;
    padding: 80px 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-main);
}

.cta-box h2 {
    font-size: clamp(24px, 3vw, 36px);
    font-weight: 700;
    margin-bottom: 16px;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-box p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* === Contact Section === */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
}

.ci-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    margin-bottom: 16px;
    transition: var(--transition);
}

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

.ci-icon {
    width: 40px;
    height: 40px;
    color: var(--accent-cyan);
    flex-shrink: 0;
}

.ci-item h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.ci-item p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Form */
.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 20px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    outline: none;
    transition: var(--transition);
    resize: vertical;
}

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

.form-group select {
    cursor: pointer;
    color: var(--text-muted);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235a6477' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.form-group select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 242, 254, 0.1);
}

/* === Sub-page Hero Banner === */
.page-hero {
    padding: 160px 0 80px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 50% 30%, rgba(0, 242, 254, 0.06) 0%, transparent 60%);
}

.page-hero .container {
    position: relative;
    z-index: 1;
}

.page-hero .section-tag {
    margin-bottom: 16px;
}

.page-hero-title {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 900;
    margin-bottom: 20px;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-hero-desc {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.9;
}

.page-hero-actions {
    margin-top: 32px;
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.breadcrumb {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.breadcrumb a {
    color: var(--text-muted);
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--accent-cyan);
}

.breadcrumb span {
    margin: 0 8px;
    opacity: 0.5;
}

/* === Feature sections (sub-pages) === */
.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    margin-bottom: 80px;
}

.feature-row.reverse {
    direction: rtl;
}

.feature-row.reverse > * {
    direction: ltr;
}

.feature-text h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
}

.feature-text p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 20px;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 8px 0;
    padding-left: 28px;
    position: relative;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.feature-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 8px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 50%;
}

.feature-visual {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.feature-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 242, 254, 0.03) 0%, transparent 70%);
}

/* === ERP Mock (sub-page) === */
.erp-dashboard-mock {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), var(--shadow-glow);
}

.mock-topbar {
    background: rgba(0, 0, 0, 0.3);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    border-bottom: 1px solid var(--border-color);
}

.mock-dots { display: flex; gap: 6px; }
.mock-dots span { width: 10px; height: 10px; border-radius: 50%; }
.mock-dots span:nth-child(1) { background: #ff5f57; }
.mock-dots span:nth-child(2) { background: #ffbd2e; }
.mock-dots span:nth-child(3) { background: #28c840; }

.mock-title { font-size: 13px; color: var(--text-muted); }

.mock-body { display: flex; min-height: 320px; }

.mock-sidebar {
    width: 180px;
    background: rgba(0, 0, 0, 0.2);
    border-right: 1px solid var(--border-color);
    padding: 16px 0;
    flex-shrink: 0;
}

.mock-menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    font-size: 13px;
    color: var(--text-muted);
    cursor: default;
    transition: var(--transition);
}

.mock-menu-item.active {
    color: var(--accent-cyan);
    background: rgba(0, 242, 254, 0.06);
    border-left: 2px solid var(--accent-cyan);
}

.mock-content { flex: 1; padding: 20px; }

.mock-stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.mock-stat-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px;
    text-align: center;
}

.msc-label { display: block; font-size: 11px; color: var(--text-muted); margin-bottom: 8px; }
.msc-value { font-size: 24px; font-weight: 700; }

.mock-chart {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
}

.chart-title { font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }

.gantt-rows { display: flex; flex-direction: column; gap: 10px; }
.gantt-row { display: flex; align-items: center; gap: 12px; }
.gantt-label { font-size: 11px; color: var(--text-muted); width: 110px; flex-shrink: 0; text-align: right; }

.gantt-bar {
    height: 20px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
    border-radius: 4px;
    animation: ganttLoad 1.5s ease-out forwards;
    opacity: 0.8;
}

.gantt-bar.bar2 { background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple)); }
.gantt-bar.bar3 { background: linear-gradient(90deg, var(--accent-green), var(--accent-cyan)); }
.gantt-bar.bar4 { background: linear-gradient(90deg, var(--accent-purple), var(--accent-pink)); }

@keyframes ganttLoad {
    from { transform: scaleX(0); transform-origin: left; }
    to { transform: scaleX(1); transform-origin: left; }
}

/* ERP Features Grid */
.erp-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.erp-feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition);
}

.erp-feature-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }

.ef-icon { width: 40px; height: 40px; color: var(--accent-cyan); margin-bottom: 16px; }
.erp-feature-card h4 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.erp-feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* === GEO Flow === */
.geo-flow {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 12px;
    margin-bottom: 64px;
    flex-wrap: wrap;
}

.geo-step {
    flex: 0 1 180px;
    text-align: center;
    padding: 24px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: var(--transition);
}

.geo-step:hover { border-color: var(--border-hover); transform: translateY(-4px); }

.geo-step-num { font-size: 11px; color: var(--accent-cyan); letter-spacing: 2px; margin-bottom: 12px; font-weight: 700; }
.geo-step-icon { width: 56px; height: 56px; margin: 0 auto 16px; color: var(--accent-cyan); }
.geo-step h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.geo-step p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

.geo-arrow {
    display: flex;
    align-items: center;
    color: var(--accent-cyan);
    opacity: 0.4;
    padding-top: 60px;
    flex-shrink: 0;
}

.geo-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.geo-highlight-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: var(--transition);
}

.geo-highlight-card:hover { border-color: var(--border-hover); }
.ghc-number { font-size: 36px; font-weight: 900; background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 8px; }
.ghc-text { font-size: 14px; color: var(--text-secondary); }

/* === Video Tools Grid === */
.video-tools-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.video-tool-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px 32px;
    transition: var(--transition);
    overflow: hidden;
}

.video-tool-card:hover { border-color: var(--border-hover); transform: translateY(-4px); box-shadow: var(--shadow-glow); }

.vtc-bg {
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(168, 85, 247, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.vtc-icon { width: 72px; height: 72px; color: var(--accent-purple); margin-bottom: 24px; }
.video-tool-card h4 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.video-tool-card p { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; line-height: 1.7; }

.vtc-features { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.vtc-features li { font-size: 13px; color: var(--text-secondary); padding-left: 20px; position: relative; }
.vtc-features li::before { content: ''; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; background: var(--accent-purple); border-radius: 50%; }

/* === Platform Showcase === */
.platform-showcase {
    position: relative;
    width: 100%;
    max-width: 600px;
    height: 500px;
    margin: 0 auto 64px;
}

.platform-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
}

.platform-hub {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--accent-pink);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    color: var(--accent-pink);
    box-shadow: 0 0 40px rgba(240, 147, 251, 0.2);
}

.platform-hub svg { width: 32px; height: 32px; }
.platform-hub span { font-size: 11px; font-weight: 600; }

.platform-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 400px;
    height: 400px;
    margin-left: -200px;
    margin-top: -200px;
    animation: ringRotate 60s linear infinite;
}

@keyframes ringRotate { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.platform-node {
    position: absolute;
    width: 72px;
    height: 72px;
    top: 50%;
    left: 50%;
    margin: -36px;
    transform: rotate(calc(var(--i) * 40deg)) translateY(-200px);
}

.pn-inner {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: ringRotateReverse 60s linear infinite;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

@keyframes ringRotateReverse { from { transform: rotate(0deg); } to { transform: rotate(-360deg); } }

.pn-inner:hover { border-color: var(--accent-pink); box-shadow: 0 0 20px rgba(240, 147, 251, 0.3); }

.pn-name { font-size: 12px; font-weight: 600; color: var(--text-primary); white-space: nowrap; }

.distribute-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.df-card {
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: var(--transition);
}

.df-card:hover { border-color: var(--border-hover); }
.df-card h4 { font-size: 18px; font-weight: 600; margin-bottom: 8px; background: var(--gradient-warm); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.df-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* === Invoice (sub-page) visual === */
.inv-feature {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    margin-bottom: 16px;
    transition: var(--transition);
}
.inv-feature:hover { border-color: var(--border-hover); }
.inv-icon { width: 40px; height: 40px; color: var(--accent-green); flex-shrink: 0; }
.inv-text h4 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.inv-text p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* Screenshot mock */
.screenshot-mock {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.screenshot-header {
    padding: 16px 24px;
    background: rgba(67, 233, 123, 0.06);
    border-bottom: 1px solid rgba(67, 233, 123, 0.15);
    display: flex;
    align-items: center;
    gap: 12px;
}

.screenshot-header .ss-icon {
    width: 32px;
    height: 32px;
    background: rgba(67, 233, 123, 0.15);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-green);
}

.screenshot-header h4 {
    font-size: 15px;
    font-weight: 600;
}

.screenshot-header .ss-badge {
    margin-left: auto;
    font-size: 12px;
    padding: 3px 12px;
    border-radius: 50px;
    background: rgba(67, 233, 123, 0.12);
    color: var(--accent-green);
    border: 1px solid rgba(67, 233, 123, 0.25);
}

.screenshot-body {
    padding: 24px;
}

.ss-stamp-area {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
    margin: 16px 0;
    border: 2px dashed rgba(67, 233, 123, 0.2);
    border-radius: 12px;
    background: rgba(67, 233, 123, 0.02);
}

.ss-stamp {
    width: 120px;
    height: 120px;
    border: 4px solid var(--accent-green);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transform: rotate(-15deg);
    opacity: 0.8;
    color: var(--accent-green);
}

.ss-stamp .stamp-main {
    font-size: 20px;
    font-weight: 900;
    letter-spacing: 4px;
}

.ss-stamp .stamp-sub {
    font-size: 10px;
    margin-top: 4px;
    opacity: 0.7;
}

.ss-note {
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    margin-top: 16px;
}

/* === About Page === */
.about-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px 32px;
    transition: var(--transition);
}

.about-card:hover {
    border-color: var(--border-hover);
}

.about-card h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.about-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.9;
}

.about-card-full {
    grid-column: 1 / -1;
}

.timeline {
    position: relative;
    padding-left: 32px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-purple));
    opacity: 0.3;
}

.timeline-item {
    position: relative;
    padding-bottom: 32px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -28px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-cyan);
    border: 2px solid var(--bg-primary);
}

.timeline-item h5 {
    font-size: 15px;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: 4px;
}

.timeline-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Team grid */
.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.team-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    transition: var(--transition);
}

.team-card:hover { border-color: var(--border-hover); }

.team-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.15), rgba(168, 85, 247, 0.15));
    border: 1px solid var(--border-color);
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.team-card h4 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.team-card .team-role { font-size: 13px; color: var(--accent-cyan); margin-bottom: 12px; }
.team-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }

.team-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    color: var(--accent-cyan);
    background: rgba(0, 242, 254, 0.06);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.team-icon svg { width: 36px; height: 36px; }

/* === Mock Dashboard (sub-pages) === */
.mock-dashboard {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    width: 100%;
}

.mock-header {
    padding: 12px 20px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.mock-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}
.mock-dot:nth-child(1) { background: #ff5f57; }
.mock-dot:nth-child(2) { background: #ffbd2e; }
.mock-dot:nth-child(3) { background: #28c840; }

.mock-header .mock-title {
    font-size: 13px;
    color: var(--text-muted);
    margin-left: 8px;
}

.mock-dashboard .mock-body {
    padding: 20px;
}

.mock-stat-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.mock-stat {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px;
    text-align: center;
}

.mock-stat-num {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 4px;
}

.mock-stat-label {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
}

.mock-table {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
}

.mock-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    padding: 10px 16px;
    font-size: 12px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    align-items: center;
}
.mock-row:last-child { border-bottom: none; }

.mock-row-header {
    background: rgba(0, 242, 254, 0.04);
    font-weight: 600;
    color: var(--text-muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-green { color: var(--accent-green); font-weight: 600; }
.status-blue { color: var(--accent-blue); font-weight: 600; }
.status-cyan { color: var(--accent-cyan); font-weight: 600; }

/* Mock Flow */
.mock-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 0;
}

.flow-step {
    text-align: center;
}

.flow-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(0, 242, 254, 0.08);
    border: 1px solid rgba(0, 242, 254, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
    font-weight: 700;
    font-size: 14px;
    margin: 0 auto 8px;
}

.flow-label {
    font-size: 11px;
    color: var(--text-muted);
}

.flow-arrow {
    color: var(--accent-cyan);
    font-size: 18px;
    opacity: 0.5;
    margin-bottom: 20px;
}

/* === Screenshot Mock (invoice) === */
.ss-invoice-info {
    margin-bottom: 16px;
}

.ss-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 13px;
}
.ss-row:last-child { border-bottom: none; }

.ss-label { color: var(--text-muted); }
.ss-value { color: var(--text-primary); font-weight: 500; }

.ss-stamp-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    margin: 16px 0 0;
    border: 2px dashed rgba(67, 233, 123, 0.2);
    border-radius: 12px;
    background: rgba(67, 233, 123, 0.02);
    gap: 12px;
}

.ss-stamp-pass {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-green);
    font-size: 18px;
    font-weight: 700;
    border: 3px solid var(--accent-green);
    border-radius: 50px;
    padding: 8px 24px;
    opacity: 0.9;
}

.ss-verify-detail {
    text-align: center;
}
.ss-verify-detail small {
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.8;
}

/* === About Card Main === */
.about-card-main {
    grid-column: 1 / -1;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 48px 40px;
}
.about-card-main h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
    background: var(--gradient-blue);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.about-card-main p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 2;
    margin-bottom: 16px;
}
.about-card-main p:last-child { margin-bottom: 0; }
.about-card-main strong { color: var(--text-primary); }

/* === Timeline Content === */
.timeline-content h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: 8px;
}
.timeline-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}
.timeline-marker {
    position: absolute;
    left: -28px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-cyan);
    border: 2px solid var(--bg-primary);
}

/* === Contact Grid === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-info-item {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: var(--transition);
}
.contact-info-item:hover { border-color: var(--border-hover); }

.contact-info-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 242, 254, 0.06);
    border-radius: 12px;
    color: var(--accent-cyan);
}

.contact-info-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}
.contact-info-item p {
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 2px;
}
.contact-info-item small {
    font-size: 13px;
    color: var(--text-muted);
}

.contact-form-wrap {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
}

.contact-form h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

/* === Footer === */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 64px 0 32px;
    background: var(--bg-secondary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.footer-logo span {
    background: var(--gradient-blue);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-links a,
.footer-contact-line {
    display: block;
    font-size: 14px;
    color: var(--text-muted);
    padding: 6px 0;
    transition: var(--transition);
}

.footer-links a:hover { color: var(--accent-cyan); }

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

.footer-icp a {
    color: var(--text-muted);
    transition: var(--transition);
}

.footer-icp a:hover {
    color: var(--accent-cyan);
}

/* === Animations === */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }

@keyframes fadeUp {
    to { opacity: 1; transform: translateY(0); }
}

[data-aos] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-visible {
    opacity: 1;
    transform: translateY(0);
}

/* === Responsive === */
@media (max-width: 1024px) {
    .adv-grid { grid-template-columns: repeat(2, 1fr); }
    .erp-features { grid-template-columns: repeat(2, 1fr); }
    .highlights-grid { grid-template-columns: repeat(2, 1fr); }
    .geo-arrow { display: none; }
    .geo-step { flex: 0 1 calc(33% - 16px); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .feature-row { gap: 40px; }
    .about-grid { grid-template-columns: 1fr; }
    .team-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    :root { --nav-height: 64px; }
    .section { padding: 80px 0; }
    .section-header { margin-bottom: 48px; }

    /* Nav Mobile */
    .nav-toggle { display: flex; }

    .nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(5, 10, 21, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        gap: 4px;
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        padding: 20px;
    }

    .nav-menu.active { transform: translateX(0); }

    .nav-link {
        font-size: 18px;
        padding: 14px 24px;
        width: 100%;
        text-align: center;
        justify-content: center;
    }

    /* Mobile dropdown */
    .dropdown-menu {
        position: static;
        transform: none;
        min-width: auto;
        background: rgba(0, 0, 0, 0.2);
        border: none;
        border-radius: 12px;
        padding: 4px;
        opacity: 1;
        visibility: visible;
        display: none;
        box-shadow: none;
        margin-top: 4px;
    }

    .nav-dropdown.open .dropdown-menu {
        display: block;
    }

    .nav-dropdown:hover .dropdown-menu {
        display: none;
    }

    .nav-dropdown.open:hover .dropdown-menu {
        display: block;
    }

    .dropdown-item { justify-content: center; }

    .nav-cta-wrap { margin-left: 0; margin-top: 12px; text-align: center; }

    /* Grids */
    .product-grid { grid-template-columns: 1fr; }
    .adv-grid { grid-template-columns: 1fr; }
    .highlights-grid { grid-template-columns: 1fr; }
    .erp-features { grid-template-columns: 1fr; }
    .geo-step { flex: 0 1 calc(50% - 12px); }
    .geo-highlights { grid-template-columns: 1fr; }
    .video-tools-grid { grid-template-columns: 1fr; }
    .clients-grid { grid-template-columns: 1fr; }
    .distribute-features { grid-template-columns: 1fr; }
    .team-grid { grid-template-columns: 1fr; }
    .feature-row { grid-template-columns: 1fr; }
    .feature-row.reverse { direction: ltr; }

    /* ERP Mock */
    .mock-sidebar { display: none; }
    .mock-stats-row { grid-template-columns: repeat(2, 1fr); }

    /* Platform */
    .platform-showcase { height: 400px; }
    .platform-ring { width: 300px; height: 300px; margin-left: -150px; margin-top: -150px; }
    .platform-node { transform: rotate(calc(var(--i) * 40deg)) translateY(-150px); width: 56px; height: 56px; margin: -28px; }
    .pn-inner { width: 56px; height: 56px; }
    .platform-hub { width: 80px; height: 80px; }
    .platform-hub svg { width: 24px; height: 24px; }
    .platform-hub span { font-size: 10px; }
    .pn-name { font-size: 10px; }

    /* Mock Dashboard */
    .mock-stat-row { grid-template-columns: repeat(2, 1fr); }
    .mock-row { font-size: 11px; padding: 8px 12px; }
    .mock-flow { gap: 8px; flex-wrap: wrap; }
    .flow-icon { width: 40px; height: 40px; font-size: 12px; }

    /* Contact, Footer */
    .contact-grid { grid-template-columns: 1fr; }
    .contact-layout { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .contact-form { padding: 24px; }
    .contact-form-wrap { padding: 24px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 8px; }

    /* Stats */
    .hero-stats { gap: 24px; }
    .stat-divider { display: none; }
    .stat-num { font-size: 28px; }

    /* CTA */
    .cta-box { padding: 48px 24px; }
    .cta-box p br { display: none; }

    /* Trust */
    .clients-trust-bar { flex-direction: column; gap: 16px; align-items: flex-start; }

    /* Page hero */
    .page-hero { padding: 120px 0 60px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 32px; }
    .hero-desc { font-size: 14px; }
    .hero-badge { font-size: 11px; padding: 6px 16px; }
    .btn { padding: 12px 24px; font-size: 14px; }
    .geo-step { flex: 0 1 100%; }
    .gantt-label { width: 80px; font-size: 10px; }

    .platform-showcase { height: 350px; }
    .platform-ring { width: 260px; height: 260px; margin-left: -130px; margin-top: -130px; }
    .platform-node { transform: rotate(calc(var(--i) * 40deg)) translateY(-130px); width: 48px; height: 48px; margin: -24px; }
    .pn-inner { width: 48px; height: 48px; }
    .pn-name { font-size: 9px; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: rgba(0, 242, 254, 0.2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0, 242, 254, 0.4); }

/* Selection */
::selection {
    background: rgba(0, 242, 254, 0.2);
    color: var(--accent-cyan);
}