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

:root {
    /* 科技感配色 */
    --bg-primary: #0a0e1a;
    --bg-secondary: #0d1326;
    --bg-card: rgba(13, 19, 38, 0.7);
    --bg-card-hover: rgba(20, 30, 60, 0.8);
    --border-color: rgba(0, 212, 255, 0.15);
    --border-hover: rgba(0, 212, 255, 0.4);

    --accent-primary: #00d4ff;
    --accent-secondary: #7c3aed;
    --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --accent-glow: rgba(0, 212, 255, 0.3);

    --text-primary: #e8ecf4;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Cascadia Code", monospace;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    /*color: var(--text-primary);*/
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

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

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-primary);
}

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

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

.nav-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: var(--transition);
    border-radius: 1px;
}

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

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

.nav-login {
    padding: 8px 20px;
    border: 1px solid var(--accent-primary);
    border-radius: var(--radius-sm);
    color: var(--accent-primary) !important;
    transition: var(--transition);
}

.nav-login:hover {
    background: var(--accent-primary);
    color: var(--bg-primary) !important;
}

.nav-login::after {
    display: none !important;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    flex-direction: column;
    gap: 16px;
    z-index: 999;
}

.mobile-menu a {
    color: var(--text-secondary);
    font-size: 1rem;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu.active {
    display: flex;
}

/* ===== Hero Section ===== */
.hero {
    color: var(--text-primary);
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 100px 24px 60px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 8s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--accent-primary);
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--accent-secondary);
    bottom: -50px;
    left: -50px;
    animation-delay: -3s;
}

.orb-3 {
    width: 200px;
    height: 200px;
    background: rgba(0, 212, 255, 0.5);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -5s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--accent-primary);
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease-out;
}

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

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

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.title-line {
    display: block;
}

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

.hero-desc {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 36px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

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

.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.05);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    animation: fadeInUp 0.8s ease-out 0.8s both;
}

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

.stat-num {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
    font-family: var(--font-mono);
}

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

.scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.8rem;
    animation: fadeInUp 0.8s ease-out 1s both;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(45deg);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: rotate(45deg) translate(0, 0); }
    50% { transform: rotate(45deg) translate(5px, 5px); }
}

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

/* ===== Section Base ===== */
.section {
    color: var(--text-primary);
    padding: 100px 0;
    position: relative;
}

.section-dark {
    background: var(--bg-secondary);
}

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

.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-primary);
    border: 1px solid var(--border-color);
    padding: 4px 16px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 12px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Expand Hint ===== */
.expand-hint {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--accent-primary);
    margin-top: 16px;
    cursor: pointer;
    transition: var(--transition);
}

.expand-hint:hover {
    color: var(--text-primary);
}

.expand-arrow {
    width: 12px;
    height: 12px;
    transition: transform 0.3s ease;
}

[data-expanded="true"] .expand-arrow {
    transform: rotate(180deg);
}

/* ===== Position Cards ===== */
.position-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.pos-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.pos-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.05);
}

.pos-card-main {
    padding: 32px;
    display: flex;
    align-items: flex-start;
    gap: 24px;
    cursor: pointer;
}

.pos-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
}

.pos-icon svg {
    width: 28px;
    height: 28px;
}

.pos-card-main h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.pos-summary {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.pos-card-detail {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.pos-card[data-expanded="true"] .pos-card-detail {
    max-height: 600px;
}

.pos-card-detail .detail-content {
    padding: 0 32px 32px 112px;
}

.detail-content h4 {
    font-size: 1rem;
    color: var(--accent-primary);
    margin-bottom: 12px;
}

.detail-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 12px;
}

.detail-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 16px;
}

.df-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.df-dot {
    width: 6px;
    height: 6px;
    background: var(--accent-primary);
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 0 8px var(--accent-glow);
}

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

.sell-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.sell-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.08);
}

.sell-card-inner {
    padding: 32px;
    cursor: pointer;
}

.sell-num {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-primary);
    opacity: 0.6;
    margin-bottom: 16px;
}

.sell-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    margin-bottom: 20px;
}

.sell-icon svg {
    width: 24px;
    height: 24px;
}

.sell-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.sell-summary {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.sell-detail {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.sell-card[data-expanded="true"] .sell-detail {
    max-height: 500px;
}

.sell-detail .detail-content {
    padding: 0 32px 32px;
}

/* ===== Value List ===== */
.value-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.value-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

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

.value-main {
    padding: 28px 32px;
    display: flex;
    align-items: center;
    gap: 24px;
    cursor: pointer;
}

.value-num-wrap {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.value-num {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.value-info {
    flex: 1;
}

.value-info h3 {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.value-summary {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.value-detail {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.value-item[data-expanded="true"] .value-detail {
    max-height: 500px;
}

.value-detail .detail-content {
    padding: 0 32px 32px 108px;
}

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

.ind-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.ind-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.08);
}

.ind-card-front {
    padding: 32px;
    cursor: pointer;
    text-align: center;
}

.ind-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--accent-primary);
    margin: 0 auto 20px;
}

.ind-icon svg {
    width: 32px;
    height: 32px;
}

.ind-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.ind-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.ind-detail {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.ind-card[data-expanded="true"] .ind-detail {
    max-height: 500px;
}

.ind-detail .detail-content {
    padding: 0 32px 32px;
    text-align: left;
}

/* ===== Contact Section ===== */
.contact-grid {
    display: grid;
    /* grid-template-columns: 1fr 1fr 1.2fr;*/
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

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

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

.contact-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.contact-label svg {
    width: 20px;
    height: 20px;
}

/* QR Code */
.qr-placeholder {
    text-align: center;
}

.qr-frame {
    width: 180px;
    height: 180px;
    margin: 0 auto 16px;
    padding: 12px;
    background: white;
    border-radius: var(--radius-sm);
}

.qr-inner {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1a1a2e;
}

.qr-inner svg {
    width: 140px;
    height: 140px;
}

.qr-tip {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.qr-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Phone */
.phone-wrap {
    text-align: center;
    padding: 20px 0;
}

.phone-num {
    display: block;
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.phone-sub {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.contact-meta {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.meta-item svg {
    width: 16px;
    height: 16px;
    color: var(--accent-primary);
    flex-shrink: 0;
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
    appearance: none;
    -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group label {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.95rem;
    pointer-events: none;
    transition: var(--transition);
    background: var(--bg-card);
    padding: 0 4px;
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label {
    top: 0;
    font-size: 0.75rem;
    color: var(--accent-primary);
}

.form-group select {
    padding-top: 14px;
    padding-bottom: 14px;
}

.form-group select + .select-label {
    position: absolute;
    left: 16px;
    top: 0;
    transform: translateY(-50%);
    font-size: 0.75rem;
    color: var(--accent-primary);
    background: var(--bg-card);
    padding: 0 4px;
}

.form-group select:invalid + .select-label {
    top: 50%;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.form-group select:focus + .select-label,
.form-group select:valid + .select-label {
    top: 0;
    font-size: 0.75rem;
    color: var(--accent-primary);
}

.form-submit {
    padding: 14px;
    background: var(--accent-gradient);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.3);
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 32px;
}

.footer-brand {
    max-width: 320px;
}

.footer-brand .logo {
    margin-bottom: 12px;
}

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

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== Toast ===== */
.toast {
    position: fixed;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 14px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    z-index: 9999;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    backdrop-filter: blur(10px);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ===== Scroll Reveal ===== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .selling-grid,
    .industry-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .contact-form-card {
        grid-column: span 2;
    }
}

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

    .mobile-menu-btn {
        display: flex;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .hero-btns {
        flex-direction: column;
        align-items: center;
    }

    .selling-grid,
    .industry-grid {
        grid-template-columns: 1fr;
    }

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

    .contact-form-card {
        grid-column: span 1;
    }

    .pos-card-main {
        flex-direction: column;
        text-align: center;
    }

    .pos-card-detail .detail-content {
        padding: 0 24px 24px;
    }

    .value-main {
        flex-wrap: wrap;
    }

    .value-detail .detail-content {
        padding: 0 24px 24px;
    }

    .section {
        padding: 60px 0;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}


/* ===== Login Modal ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.modal-box {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    position: relative;
    transform: translateY(30px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    padding: 0;
}

.modal-close:hover {
    background: rgba(0, 212, 255, 0.2);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.modal-close svg {
    width: 18px;
    height: 18px;
}

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

.modal-header .logo {
    justify-content: center;
    margin-bottom: 16px;
}

.modal-header h2 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 6px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.modal-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.modal-form .form-group {
    position: relative;
}

.modal-form .form-group input {
    width: 100%;
    padding: 14px 16px;
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

.modal-form .form-group input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.modal-form .form-group label {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.95rem;
    pointer-events: none;
    transition: var(--transition);
    background: var(--bg-card);
    padding: 0 4px;
}

.modal-form .form-group input:focus + label,
.modal-form .form-group input:not(:placeholder-shown) + label {
    top: 0;
    font-size: 0.75rem;
    color: var(--accent-primary);
}

.modal-form .captcha-group {
    display: flex;
    gap: 12px;
}

.modal-form .captcha-group .form-group {
    flex: 1;
}

.modal-form .captcha-img {
    width: 120px;
    height: 48px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    cursor: pointer;
    flex-shrink: 0;
    transition: var(--transition);
}

.modal-form .captcha-img:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.modal-submit {
    padding: 14px;
    background: var(--accent-gradient);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    margin-top: 4px;
}

.modal-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.3);
}

.modal-footer {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.modal-fullpage-link {
    color: var(--accent-primary);
    font-size: 0.9rem;
    transition: var(--transition);
}

.modal-fullpage-link:hover {
    color: var(--text-primary);
}

@media (max-width: 480px) {
    .modal-box {
        padding: 32px 20px;
    }

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

    .modal-form .captcha-img {
        width: 100%;
        height: 44px;
    }
}