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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "WenQuanYi Micro Hei", sans-serif;
    background: #f0f4f8;
    color: #333;
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: #1a73e8;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #0d47a1;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== HEADER ========== */
header {
    background: linear-gradient(135deg, #0d2b5e 0%, #1a4fa0 50%, #2563eb 100%);
    color: #fff;
    padding: 18px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.15);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

.logo {
    font-size: 26px;
    font-weight: bold;
    color: #fff;
    letter-spacing: 3px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.logo:hover {
    color: #fff;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 8px;
    flex-wrap: wrap;
}

nav ul li a {
    color: rgba(255, 255, 255, 0.9);
    padding: 8px 18px;
    border-radius: 6px;
    font-size: 15px;
    transition: all 0.3s ease;
    display: block;
    white-space: nowrap;
}

nav ul li a:hover,
nav ul li a.active {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

/* ========== HERO ========== */
.hero {
    background: linear-gradient(160deg, #0a1628 0%, #0d2b5e 30%, #1a4fa0 60%, #2563eb 100%);
    color: #fff;
    padding: 70px 0 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.3) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: "";
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(26, 115, 232, 0.2) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr 1fr;
    gap: 30px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-left h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #93c5fd;
}

.hero-left p {
    font-size: 14px;
    line-height: 2;
    color: rgba(255, 255, 255, 0.85);
}

.hero-center {
    text-align: center;
    padding: 0 20px;
}

.hero-center h1 {
    font-size: 40px;
    margin-bottom: 20px;
    letter-spacing: 5px;
    text-shadow: 0 3px 6px rgba(0, 0, 0, 0.3);
}

.hero-center p {
    font-size: 17px;
    line-height: 2;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 30px;
}

.hero-btn {
    display: inline-block;
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    color: #fff;
    padding: 14px 40px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
    transition: all 0.3s ease;
}

.hero-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
    color: #fff;
}

.hero-right {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 25px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-right h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: #fbbf24;
}

.hero-right ul {
    list-style: none;
}

.hero-right ul li {
    padding: 6px 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
}

.hero-right ul li::before {
    content: "\2713";
    color: #34d399;
    margin-right: 8px;
    font-weight: bold;
}

/* ========== BREADCRUMB ========== */
.breadcrumb-nav {
    background: #e8eef6;
    padding: 12px 0;
    font-size: 14px;
    color: #666;
}

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    list-style: none;
    gap: 5px;
}

.breadcrumb li a {
    color: #1a73e8;
}

.breadcrumb li span {
    color: #999;
    margin: 0 3px;
}

/* ========== SECTIONS ========== */
.section {
    padding: 60px 0;
}

.section-alt {
    background: #fff;
}

.section-title {
    text-align: center;
    font-size: 30px;
    color: #0d2b5e;
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.section-desc {
    text-align: center;
    color: #666;
    font-size: 16px;
    margin-bottom: 45px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

/* ========== CARDS ========== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.card-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.card {
    background: #fff;
    border-radius: 12px;
    padding: 30px 25px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.card-icon {
    font-size: 36px;
    margin-bottom: 15px;
    display: block;
}

.card h3 {
    font-size: 19px;
    color: #0d2b5e;
    margin-bottom: 12px;
}

.card p {
    color: #666;
    font-size: 14px;
    line-height: 1.8;
}

/* ========== SOLUTION ========== */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.solution-card {
    background: #fff;
    border-radius: 12px;
    padding: 35px 30px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    border-left: 4px solid #1a73e8;
    transition: all 0.3s ease;
}

.solution-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.solution-card h3 {
    font-size: 20px;
    color: #0d2b5e;
    margin-bottom: 12px;
}

.solution-card p {
    color: #555;
    font-size: 15px;
    line-height: 1.9;
}

/* ========== NEWS ========== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.news-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.news-thumb {
    height: 180px;
    background: linear-gradient(135deg, #1a73e8, #0d2b5e);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 40px;
}

.news-body {
    padding: 20px;
}

.news-date {
    font-size: 13px;
    color: #999;
    margin-bottom: 8px;
}

.news-body h3 {
    font-size: 17px;
    color: #0d2b5e;
    margin-bottom: 10px;
    line-height: 1.5;
}

.news-body p {
    color: #666;
    font-size: 14px;
    line-height: 1.8;
}

.news-more {
    display: inline-block;
    color: #1a73e8;
    font-size: 14px;
    margin-top: 10px;
}

/* ========== ABOUT PREVIEW ========== */
.about-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.about-text h3 {
    font-size: 24px;
    color: #0d2b5e;
    margin-bottom: 15px;
}

.about-text p {
    color: #555;
    font-size: 15px;
    line-height: 2;
    margin-bottom: 15px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.stat-item {
    background: #fff;
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.stat-num {
    font-size: 32px;
    font-weight: bold;
    color: #1a73e8;
    display: block;
}

.stat-label {
    font-size: 14px;
    color: #666;
    margin-top: 5px;
}

/* ========== CTA ========== */
.cta-section {
    background: linear-gradient(135deg, #0d2b5e, #2563eb);
    color: #fff;
    text-align: center;
    padding: 60px 0;
}

.cta-section h2 {
    font-size: 28px;
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.cta-section p {
    font-size: 16px;
    margin-bottom: 30px;
    color: rgba(255, 255, 255, 0.9);
}

.cta-btn {
    display: inline-block;
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    color: #fff;
    padding: 14px 45px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
    transition: all 0.3s ease;
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
    color: #fff;
}

/* ========== PAGE HEADER ========== */
.page-header {
    background: linear-gradient(135deg, #0d2b5e 0%, #1a4fa0 50%, #2563eb 100%);
    color: #fff;
    padding: 50px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 34px;
    letter-spacing: 3px;
    margin-bottom: 10px;
}

.page-header p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
}

/* ========== CONTENT ========== */
.content-block {
    background: #fff;
    border-radius: 12px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.content-block h2 {
    font-size: 24px;
    color: #0d2b5e;
    margin-bottom: 15px;
    padding-bottom: 12px;
    border-bottom: 2px solid #e8eef6;
}

.content-block h3 {
    font-size: 20px;
    color: #0d2b5e;
    margin: 25px 0 12px;
}

.content-block p {
    color: #555;
    font-size: 15px;
    line-height: 2;
    margin-bottom: 15px;
}

.content-block ul {
    padding-left: 25px;
    margin-bottom: 15px;
}

.content-block ul li {
    color: #555;
    font-size: 15px;
    line-height: 2;
    margin-bottom: 5px;
}

/* ========== CONTACT ========== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-bottom: 30px;
}

.contact-item {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.contact-icon {
    font-size: 36px;
    margin-bottom: 15px;
    display: block;
}

.contact-item h3 {
    font-size: 18px;
    color: #0d2b5e;
    margin-bottom: 10px;
}

.contact-item p {
    color: #666;
    font-size: 15px;
    line-height: 1.8;
}

/* ========== TIMELINE ========== */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, #1a73e8, #93c5fd);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 35px;
    padding-left: 25px;
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: -30px;
    top: 8px;
    width: 14px;
    height: 14px;
    background: #1a73e8;
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px #1a73e8;
}

.timeline-item h3 {
    font-size: 18px;
    color: #0d2b5e;
    margin-bottom: 8px;
}

.timeline-item p {
    color: #555;
    font-size: 15px;
    line-height: 1.8;
}

/* ========== FOOTER ========== */
footer {
    background: linear-gradient(135deg, #061029 0%, #0d2b5e 100%);
    color: rgba(255, 255, 255, 0.8);
    padding: 45px 0 25px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 30px;
}

.footer-col h4 {
    font-size: 17px;
    color: #fff;
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.footer-col p {
    font-size: 14px;
    line-height: 2;
    color: rgba(255, 255, 255, 0.7);
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: #93c5fd;
}

.footer-bottom {
    text-align: center;
    padding-top: 25px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom a:hover {
    color: #93c5fd;
}

/* ========== FLOATING TOP BUTTONS ========== */
.floating-top-btns {
    position: fixed;
    top: 80px;
    right: 15px;
    z-index: 997;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.top-action-btn {
    display: block;
    padding: 16px 30px;
    color: #fff;
    font-size: 17px;
    font-weight: bold;
    text-align: center;
    border-radius: 10px;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    border: none;
}

.top-action-btn:hover {
    transform: translateY(-3px) scale(1.03);
    color: #fff;
}

.top-action-btn-1 {
    background: linear-gradient(135deg, #b91c1c, #7f1d1d);
    box-shadow: 0 4px 18px rgba(185, 28, 28, 0.45);
}

.top-action-btn-1:hover {
    box-shadow: 0 6px 25px rgba(185, 28, 28, 0.6);
}

.top-action-btn-2 {
    background: linear-gradient(135deg, #c2410c, #7c2d12);
    box-shadow: 0 4px 18px rgba(194, 65, 12, 0.45);
}

.top-action-btn-2:hover {
    box-shadow: 0 6px 25px rgba(194, 65, 12, 0.6);
}

/* ========== FLOATING PROMO (TOP-LEFT) ========== */
.floating-promo {
    position: fixed;
    top: 100px;
    left: 15px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* ========== FLOATING UTILITY (RIGHT, BELOW TOP BTNS) ========== */
.floating-utility {
    position: fixed;
    top: 210px;
    right: 15px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.utility-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #fff;
    color: #333;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
    transition: all 0.3s ease;
}

.utility-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.18);
    color: #1a73e8;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-center h1 {
        font-size: 32px;
    }

    .card-grid,
    .news-grid,
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .card-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .about-preview {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        gap: 12px;
    }

    nav ul {
        justify-content: center;
    }

    nav ul li a {
        padding: 6px 12px;
        font-size: 14px;
    }

    .hero {
        padding: 40px 0;
    }

    .hero-center h1 {
        font-size: 26px;
        letter-spacing: 3px;
    }

    .hero-center p {
        font-size: 15px;
    }

    .section {
        padding: 40px 0;
    }

    .section-title {
        font-size: 24px;
    }

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

    .card-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .content-block {
        padding: 25px 20px;
    }

    .floating-top-btns {
        top: auto;
        bottom: 140px;
        right: 10px;
    }

    .top-action-btn {
        padding: 12px 20px;
        font-size: 14px;
        letter-spacing: 1px;
    }

    .floating-promo {
        top: auto;
        bottom: 80px;
        left: 10px;
    }

    .floating-utility {
        top: auto;
        bottom: 15px;
        right: 10px;
        flex-direction: row;
    }

    .page-header h1 {
        font-size: 26px;
    }

    .logo {
        font-size: 22px;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 15px;
    }

    .hero-center h1 {
        font-size: 22px;
    }

    .card-grid-4 {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .utility-btn {
        width: 42px;
        height: 42px;
        font-size: 18px;
    }
}