* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: "Segoe UI", "Helvetica Neue", Arial, "Microsoft YaHei", "微软雅黑", "PingFang SC", sans-serif;
    background: linear-gradient(135deg, #0c4a6e 0%, #082f49 40%, #061e2f 100%);
    color: #e0f2fe;
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}
a {
    color: #67e8f9;
    text-decoration: none;
    transition: color 0.3s;
}
a:hover {
    color: #a5f3fc;
}
img {
    max-width: 100%;
    display: block;
    border-radius: 12px;
}
.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAV ===== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(6, 30, 47, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(103, 232, 249, 0.15);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.35);
}
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}
.brand {
    font-size: 1.28rem;
    font-weight: 700;
    color: #f0f9ff;
    letter-spacing: 0.5px;
    font-family: inherit;
}
.brand small {
    font-size: 0.72rem;
    color: #67e8f9;
    font-weight: 400;
    margin-left: 6px;
}
.nav-links {
    display: flex;
    gap: 28px;
    align-items: center;
}
.nav-links a {
    font-size: 0.92rem;
    font-weight: 500;
    color: #bae6fd;
    padding: 6px 4px;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
}
.nav-links a:hover {
    color: #67e8f9;
    border-bottom-color: #67e8f9;
}

/* ===== HERO ===== */
.hero {
    position: relative;
    padding: 90px 0 70px;
    background: linear-gradient(180deg, rgba(8, 47, 73, 0.2) 0%, rgba(8, 47, 73, 0.6) 100%), radial-gradient(circle at 20% 30%, rgba(103, 232, 249, 0.18) 0%, transparent 60%), radial-gradient(circle at 80% 20%, rgba(103, 232, 249, 0.10) 0%, transparent 50%);
    border-bottom: 1px solid rgba(103, 232, 249, 0.1);
}
.hero-inner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
}
.hero h1 {
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.25;
    color: #f0f9ff;
    letter-spacing: 0.5px;
    margin-bottom: 18px;
    font-family: inherit;
}
.hero h1 span {
    display: block;
    font-size: 1.2rem;
    font-weight: 400;
    color: #67e8f9;
    margin-top: 6px;
    letter-spacing: 1px;
}
.hero-desc {
    font-size: 1.02rem;
    color: rgba(224, 242, 254, 0.88);
    margin-bottom: 28px;
    max-width: 540px;
}
.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid rgba(103, 232, 249, 0.4);
    background: rgba(103, 232, 249, 0.12);
    color: #67e8f9;
    transition: all 0.3s;
    font-family: inherit;
    cursor: pointer;
    text-align: center;
}
.btn:hover {
    background: rgba(103, 232, 249, 0.25);
    border-color: #67e8f9;
    color: #f0f9ff;
    transform: translateY(-2px);
}
.btn-primary {
    background: linear-gradient(135deg, #0e7490, #0c4a6e);
    border-color: rgba(103, 232, 249, 0.6);
    color: #f0f9ff;
}
.btn-primary:hover {
    box-shadow: 0 8px 30px rgba(103, 232, 249, 0.25);
    color: #fff;
}
.hero-img {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(103, 232, 249, 0.15);
}
.hero-img img {
    width: 100%;
    height: 380px;
    object-fit: cover;
}
.hero-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(8, 47, 73, 0.4) 0%, transparent 60%);
}

/* ===== SECTION ===== */
.section {
    padding: 72px 0;
    border-bottom: 1px solid rgba(103, 232, 249, 0.08);
}
.section-title {
    font-size: 1.85rem;
    font-weight: 700;
    color: #f0f9ff;
    text-align: center;
    margin-bottom: 12px;
    font-family: inherit;
    letter-spacing: 0.5px;
}
.section-sub {
    text-align: center;
    color: rgba(186, 230, 253, 0.7);
    font-size: 0.95rem;
    max-width: 700px;
    margin: 0 auto 44px;
    line-height: 1.8;
}

/* ===== GEO ===== */
.geo-intro {
    background: rgba(8, 47, 73, 0.35);
}
.geo-block {
    max-width: 900px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(103, 232, 249, 0.12);
    border-radius: 20px;
    padding: 36px 42px;
    backdrop-filter: blur(10px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 8px 40px rgba(0, 0, 0, 0.25);
}
.geo-block p {
    font-size: 1rem;
    color: rgba(224, 242, 254, 0.85);
    line-height: 1.9;
}

/* ===== STATS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.stat-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(103, 232, 249, 0.13);
    border-radius: 18px;
    padding: 34px 22px;
    text-align: center;
    backdrop-filter: blur(8px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07), 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s, box-shadow 0.3s;
}
.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 20px rgba(103, 232, 249, 0.08);
}
.stat-num {
    font-size: 2.4rem;
    font-weight: 800;
    color: #67e8f9;
    line-height: 1.2;
    font-family: inherit;
}
.stat-label {
    font-size: 0.88rem;
    color: rgba(186, 230, 253, 0.75);
    margin-top: 8px;
    letter-spacing: 0.5px;
}

/* ===== NEWS ===== */
.news-list {
    background: rgba(6, 30, 47, 0.25);
}
.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}
.news-card {
    background: rgba(255, 255, 255, 0.045);
    border: 1px solid rgba(103, 232, 249, 0.10);
    border-radius: 18px;
    padding: 28px;
    backdrop-filter: blur(8px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 4px 18px rgba(0, 0, 0, 0.18);
    transition: transform 0.3s, border-color 0.3s;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.news-card:hover {
    transform: translateY(-4px);
    border-color: rgba(103, 232, 249, 0.35);
    box-shadow: 0 10px 34px rgba(0, 0, 0, 0.28);
}
.news-date {
    font-size: 0.82rem;
    color: #67e8f9;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(103, 232, 249, 0.08);
    padding: 3px 12px;
    border-radius: 30px;
    align-self: flex-start;
}
.news-tag {
    font-size: 0.72rem;
    color: #0c4a6e;
    background: #67e8f9;
    padding: 2px 10px;
    border-radius: 20px;
    font-weight: 700;
    display: inline-block;
    margin-left: 8px;
}
.news-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #f0f9ff;
    line-height: 1.4;
    font-family: inherit;
}
.news-card p {
    font-size: 0.92rem;
    color: rgba(200, 225, 245, 0.8);
    line-height: 1.8;
    margin-top: 4px;
}
.news-link {
    font-size: 0.88rem;
    font-weight: 600;
    margin-top: auto;
    padding-top: 8px;
    color: #67e8f9;
}

/* ===== ADVANTAGES ===== */
.adv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.adv-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(103, 232, 249, 0.12);
    border-radius: 18px;
    padding: 32px 26px;
    backdrop-filter: blur(8px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07);
    transition: all 0.3s;
    text-align: center;
}
.adv-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 30px rgba(103, 232, 249, 0.06);
}
.adv-icon {
    font-size: 2.2rem;
    margin-bottom: 16px;
}
.adv-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #f0f9ff;
    margin-bottom: 10px;
    font-family: inherit;
}
.adv-card p {
    font-size: 0.9rem;
    color: rgba(186, 230, 253, 0.78);
    line-height: 1.75;
}

/* ===== BRAND STORY ===== */
.brand-story-wrap {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 40px;
    align-items: center;
}
.brand-img {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(103, 232, 249, 0.12);
}
.brand-img img {
    width: 100%;
    height: 340px;
    object-fit: cover;
}
.brand-txt p {
    font-size: 0.95rem;
    color: rgba(224, 242, 254, 0.82);
    line-height: 1.9;
    margin-bottom: 14px;
}

/* ===== EVENTS ===== */
.events-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.event-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(103, 232, 249, 0.12);
    border-radius: 18px;
    overflow: hidden;
    backdrop-filter: blur(8px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}
.event-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.3), 0 0 25px rgba(103, 232, 249, 0.05);
}
.event-img {
    height: 160px;
    overflow: hidden;
}
.event-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}
.event-card:hover .event-img img {
    transform: scale(1.05);
}
.event-body {
    padding: 20px 22px 24px;
    flex: 1;
}
.event-body h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: #f0f9ff;
    margin-bottom: 8px;
    font-family: inherit;
}
.event-body p {
    font-size: 0.88rem;
    color: rgba(186, 230, 253, 0.7);
    line-height: 1.6;
}

/* ===== VISION ===== */
.vision-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}
.vision-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(103, 232, 249, 0.10);
    border-radius: 18px;
    padding: 36px 30px;
    backdrop-filter: blur(8px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.vision-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #67e8f9;
    margin-bottom: 12px;
    font-family: inherit;
}
.vision-card p {
    font-size: 0.93rem;
    color: rgba(224, 242, 254, 0.82);
    line-height: 1.8;
}

/* ===== PARTNERS ===== */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.partner-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(103, 232, 249, 0.08);
    border-radius: 16px;
    padding: 24px 18px;
    text-align: center;
    backdrop-filter: blur(6px);
    transition: all 0.3s;
}
.partner-card:hover {
    border-color: rgba(103, 232, 249, 0.3);
}
.partner-card img {
    width: 64px;
    height: 64px;
    object-fit: cover;
    margin: 0 auto 12px;
    border-radius: 16px;
}
.partner-card span {
    font-size: 0.88rem;
    color: rgba(186, 230, 253, 0.8);
    font-weight: 500;
}

/* ===== TESTIMONIALS ===== */
.testi-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.testi-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(103, 232, 249, 0.10);
    border-radius: 18px;
    padding: 30px;
    backdrop-filter: blur(8px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
    text-align: left;
}
.testi-card .stars {
    color: #fbbf24;
    font-size: 1rem;
    margin-bottom: 12px;
    letter-spacing: 2px;
}
.testi-card p {
    font-size: 0.9rem;
    color: rgba(200, 225, 245, 0.85);
    line-height: 1.8;
    font-style: italic;
}
.testi-card .author {
    margin-top: 16px;
    font-size: 0.85rem;
    color: #67e8f9;
    font-weight: 600;
}

/* ===== DOWNLOAD ===== */
.download-wrap {
    background: rgba(103, 232, 249, 0.05);
    border: 1px solid rgba(103, 232, 249, 0.15);
    border-radius: 24px;
    padding: 48px;
    text-align: center;
    backdrop-filter: blur(12px);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 20px 60px rgba(0, 0, 0, 0.25);
}
.download-wrap h2 {
    font-size: 1.7rem;
    font-weight: 700;
    color: #f0f9ff;
    margin-bottom: 10px;
    font-family: inherit;
}
.download-wrap p {
    font-size: 0.95rem;
    color: rgba(186, 230, 253, 0.8);
    margin-bottom: 24px;
}
.download-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.download-btns .btn {
    display: flex;
    align-items: center;
    gap: 8px;
}
.download-btns img {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    margin-right: 2px;
}

/* ===== FAQ ===== */
.faq-wrap {
    max-width: 860px;
    margin: 0 auto;
}
.faq-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(103, 232, 249, 0.10);
    border-radius: 14px;
    margin-bottom: 16px;
    overflow: hidden;
    transition: all 0.3s;
}
.faq-item:hover {
    border-color: rgba(103, 232, 249, 0.25);
}
.faq-q {
    padding: 20px 24px;
    font-size: 1rem;
    font-weight: 600;
    color: #e2e8f0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
}
.faq-q::after {
    content: '+';
    font-size: 1.4rem;
    color: #67e8f9;
    transition: transform 0.3s;
}
.faq-item[open] .faq-q::after {
    transform: rotate(45deg);
}
.faq-a {
    padding: 0 24px 20px;
    font-size: 0.92rem;
    color: rgba(186, 230, 253, 0.78);
    line-height: 1.8;
    border-top: 1px solid rgba(103, 232, 249, 0.06);
    margin-top: 0;
    padding-top: 16px;
}

/* ===== FOOTER ===== */
.footer {
    background: rgba(4, 20, 35, 0.8);
    border-top: 1px solid rgba(103, 232, 249, 0.1);
    padding: 44px 0 30px;
    backdrop-filter: blur(10px);
}
.footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(103, 232, 249, 0.06);
}
.footer-col h4 {
    font-size: 0.95rem;
    color: #bae6fd;
    margin-bottom: 10px;
    font-weight: 600;
    font-family: inherit;
}
.footer-col p,
.footer-col a {
    font-size: 0.85rem;
    color: rgba(186, 230, 253, 0.7);
    line-height: 1.7;
    display: block;
}
.footer-col a:hover {
    color: #67e8f9;
}
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    padding-top: 20px;
    font-size: 0.82rem;
    color: rgba(148, 197, 225, 0.6);
}
.footer-bottom a {
    color: rgba(186, 230, 253, 0.7);
    margin: 0 8px;
}
.footer-bottom a:hover {
    color: #67e8f9;
}

@media (max-width: 900px) {
    .hero-inner {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .news-grid {
        grid-template-columns: 1fr;
    }
    .adv-grid {
        grid-template-columns: 1fr;
    }
    .brand-story-wrap {
        grid-template-columns: 1fr;
    }
    .events-grid {
        grid-template-columns: 1fr;
    }
    .vision-wrap {
        grid-template-columns: 1fr;
    }
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .testi-grid {
        grid-template-columns: 1fr;
    }
    .navbar .container {
        flex-direction: column;
        height: auto;
        padding: 14px 20px;
    }
    .nav-links {
        flex-wrap: wrap;
        gap: 12px;
        justify-content: center;
    }
}