:root {
    --bg: #0b1320;
    --bg-soft: #111b2e;
    --card: rgba(255, 255, 255, 0.06);
    --border: rgba(255, 255, 255, 0.12);
    --text: #f7f9fc;
    --muted: #c6d4ea;
    --subtle: #9bb0cc;
    --accent: #4ea3ff;
    --accent-strong: #2f6fff;
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

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

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    background: var(--bg);
    color: var(--text);
}

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

header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(11, 19, 32, 0.78);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    gap: 24px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    cursor: pointer;
}

.logo-image {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    object-fit: cover;
}

.company-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    opacity: 0;
    transform: translateX(-6px);
    transition: all 0.3s ease;
    pointer-events: none;
}

.logo-container:hover .company-name {
    opacity: 1;
    transform: translateX(0);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}

.nav-links a {
    color: var(--muted);
    padding: 8px 14px;
    border-radius: 999px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-links a:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.08);
}

.burger {
    display: none;
    cursor: pointer;
}

.burger div {
    width: 24px;
    height: 2px;
    background-color: var(--text);
    margin: 5px;
    transition: all 0.3s ease;
}

.slideshow-container {
    max-width: 1200px;
    margin: 24px auto 0;
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.mySlides {
    display: none;
}

.mySlides img {
    width: 100%;
    height: 520px;
    object-fit: cover;
    display: block;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    background: linear-gradient(120deg, rgba(11, 19, 32, 0.9) 0%, rgba(11, 19, 32, 0.55) 60%, rgba(11, 19, 32, 0.1) 100%);
    z-index: 2;
}

.hero-content {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.hero-badge {
    display: inline-flex;
    width: fit-content;
    padding: 8px 16px;
    border-radius: 999px;
    background: rgba(78, 163, 255, 0.16);
    color: #dbeafe;
    font-weight: 600;
    font-size: 0.9rem;
    border: 1px solid rgba(78, 163, 255, 0.4);
}

.hero-content h1 {
    font-size: clamp(2.2rem, 3.6vw, 3.6rem);
    line-height: 1.1;
    max-width: 720px;
}

.hero-content p {
    color: var(--muted);
    max-width: 620px;
    font-size: 1.05rem;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    color: #ffffff;
    padding: 12px 22px;
    border-radius: 999px;
    font-weight: 600;
    box-shadow: 0 12px 30px rgba(47, 111, 255, 0.35);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 36px rgba(47, 111, 255, 0.4);
}

.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 22px;
    border-radius: 999px;
    color: var(--text);
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.08);
    font-weight: 600;
    transition: all 0.3s ease;
}

.secondary-button:hover {
    background: rgba(255, 255, 255, 0.16);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    max-width: 560px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 16px;
    backdrop-filter: blur(10px);
}

.stat-number {
    display: block;
    font-size: 1.4rem;
    font-weight: 700;
}

.stat-label {
    color: var(--muted);
    font-size: 0.9rem;
}

.prev, .next {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: auto;
    margin-top: -22px;
    padding: 14px;
    color: white;
    font-weight: bold;
    font-size: 18px;
    transition: 0.3s ease;
    border-radius: 999px;
    user-select: none;
    background-color: rgba(11, 19, 32, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 3;
}

.next {
    right: 16px;
}

.prev {
    left: 16px;
}

.prev:hover, .next:hover {
    background-color: rgba(11, 19, 32, 0.8);
}

.fade {
    animation-name: fade;
    animation-duration: 1.5s;
}

@keyframes fade {
    from { opacity: 0.4; }
    to { opacity: 1; }
}

.dots-container {
    text-align: center;
    position: absolute;
    bottom: 18px;
    width: 100%;
    z-index: 3;
}

.dot {
    cursor: pointer;
    height: 10px;
    width: 10px;
    margin: 0 4px;
    background-color: rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    display: inline-block;
    transition: background-color 0.3s ease;
}

.active, .dot:hover {
    background-color: #ffffff;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px 80px;
}

section {
    padding: 72px 0;
}

.section-header {
    max-width: 700px;
    margin-bottom: 32px;
}

.section-title {
    font-size: clamp(1.6rem, 2.6vw, 2.4rem);
    margin-bottom: 12px;
}

.section-subtitle {
    color: var(--muted);
    font-size: 1.05rem;
}

.cards-grid,
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
}

.card,
.feature-card {
    background: var(--card);
    border: 1px solid var(--border);
    padding: 24px;
    border-radius: 18px;
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.2);
}

.card h3,
.feature-card h3 {
    margin-bottom: 10px;
    font-size: 1.15rem;
}

.card p,
.feature-card p {
    color: var(--muted);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.about-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 26px;
}

.about-card p {
    color: var(--muted);
}

.about-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 18px;
}

.about-item {
    color: var(--text);
    font-weight: 500;
}

.about-highlight {
    margin-top: 18px;
    display: grid;
    gap: 12px;
}

.highlight-item {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border);
}

.highlight-label {
    color: var(--muted);
    font-size: 0.9rem;
}

.highlight-value {
    color: var(--text);
    font-weight: 600;
    text-align: right;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 24px;
    align-items: start;
}

.contact-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 26px;
}

.contact-card p {
    color: var(--muted);
}

.contact-list {
    display: grid;
    gap: 12px;
    margin-top: 18px;
}

.contact-item {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    color: var(--muted);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 26px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

input,
textarea,
button {
    font-family: inherit;
    font-size: 1rem;
}

input,
textarea {
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
}

input::placeholder,
textarea::placeholder {
    color: var(--subtle);
}

textarea {
    min-height: 140px;
    resize: vertical;
}

button {
    cursor: pointer;
}

footer {
    background: var(--bg-soft);
    color: var(--muted);
    text-align: center;
    padding: 24px 16px;
    border-top: 1px solid var(--border);
}

footer a {
    color: var(--text);
}

footer a:hover {
    text-decoration: underline;
}

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

@media screen and (max-width: 900px) {
    nav {
        height: 64px;
    }

    .nav-links {
        position: absolute;
        right: 0;
        top: 64px;
        height: calc(100vh - 64px);
        background: rgba(11, 19, 32, 0.95);
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 70%;
        transform: translateX(100%);
        transition: transform 0.4s ease-in;
        gap: 20px;
        padding-top: 40px;
        border-left: 1px solid var(--border);
    }

    .nav-links li {
        opacity: 0;
    }

    .burger {
        display: block;
    }

    .company-name {
        display: none;
    }

    .slideshow-container {
        margin: 16px auto 0;
        border-radius: 18px;
    }

    .mySlides img {
        height: 420px;
    }

    .hero-content {
        padding: 0 24px;
    }

    .hero-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

@media screen and (max-width: 600px) {
    .hero-stats {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}