:root {
    --color-primary: #4f8cff;
    --color-primary-dark: #2f6fe8;
    --color-cyan: #6dd3ce;
    --color-bg: #f7fafc;
    --color-bg-soft: #eef6ff;
    --color-card: #ffffff;
    --color-text: #1f2a37;
    --color-muted: #64748b;
    --color-border: #e2e8f0;
    --shadow-soft: 0 18px 45px rgba(79, 140, 255, 0.12);
    --shadow-card: 0 12px 28px rgba(15, 23, 42, 0.08);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --container: 1160px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    color: var(--color-text);
    background:
        radial-gradient(circle at 8% 5%, rgba(109, 211, 206, 0.25), transparent 28%),
        radial-gradient(circle at 92% 8%, rgba(79, 140, 255, 0.18), transparent 30%),
        linear-gradient(180deg, #ffffff 0%, #f7fafc 45%, #ffffff 100%);
    line-height: 1.6;
}

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

img {
    max-width: 100%;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(18px);
    background: rgba(255, 255, 255, 0.82);
    border-bottom: 1px solid rgba(226, 232, 240, 0.75);
}

.header-inner {
    width: min(var(--container), calc(100% - 40px));
    margin: 0 auto;
    height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.header-logo,
.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.logo-icon {
    width: 38px;
    height: 38px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
    box-shadow: 0 12px 24px rgba(79, 140, 255, 0.22);
}

.logo-text {
    font-size: 18px;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px;
    border: 1px solid rgba(226, 232, 240, 0.85);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
}

.nav-link {
    padding: 8px 14px;
    border-radius: 999px;
    color: var(--color-muted);
    font-size: 14px;
    transition: 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary-dark);
    background: rgba(79, 140, 255, 0.1);
}

.nav-link-disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 11px 18px;
    font-weight: 700;
    font-size: 14px;
    border: 1px solid transparent;
    transition: 0.2s ease;
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    color: #ffffff;
    background: linear-gradient(135deg, var(--color-primary), #6aa7ff);
    box-shadow: 0 12px 24px rgba(79, 140, 255, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 30px rgba(79, 140, 255, 0.32);
}

.btn-outline {
    color: var(--color-primary-dark);
    border-color: rgba(79, 140, 255, 0.26);
    background: rgba(255, 255, 255, 0.75);
}

.btn-outline:hover {
    transform: translateY(-2px);
    border-color: rgba(79, 140, 255, 0.5);
    background: #ffffff;
    box-shadow: var(--shadow-card);
}

.btn-white {
    color: var(--color-primary-dark);
    background: #ffffff;
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.1);
}

.btn-lg {
    padding: 14px 22px;
    font-size: 15px;
}

.hamburger {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: #ffffff;
}

.hamburger span {
    display: block;
    width: 18px;
    height: 2px;
    margin: 4px auto;
    background: var(--color-text);
    border-radius: 99px;
}

.hero {
    padding: 86px 0 70px;
    overflow: hidden;
}

.hero-inner {
    width: min(var(--container), calc(100% - 40px));
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
    gap: 56px;
    align-items: center;
}

.hero-title {
    max-width: 720px;
    margin: 0;
    font-size: clamp(42px, 6vw, 72px);
    line-height: 1.05;
    letter-spacing: -0.055em;
    color: var(--color-text);
}

.hero-subtitle {
    margin: 26px 0 0;
    max-width: 680px;
    font-size: clamp(19px, 2.4vw, 26px);
    line-height: 1.45;
    color: #334155;
}

.hero-description {
    margin: 18px 0 0;
    max-width: 660px;
    font-size: 16px;
    color: var(--color-muted);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 34px;
}

.hero-visual {
    position: relative;
    min-height: 430px;
    border-radius: 42px;
    background:
        linear-gradient(135deg, rgba(255,255,255,0.9), rgba(238,246,255,0.82)),
        radial-gradient(circle at 30% 20%, rgba(109, 211, 206, 0.35), transparent 36%),
        radial-gradient(circle at 80% 70%, rgba(79, 140, 255, 0.26), transparent 38%);
    border: 1px solid rgba(226, 232, 240, 0.85);
    box-shadow: var(--shadow-soft);
}

.visual-card {
    position: absolute;
    border: 1px solid rgba(226, 232, 240, 0.88);
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(14px);
    border-radius: 26px;
    box-shadow: var(--shadow-card);
}

.visual-card-main {
    left: 48px;
    top: 66px;
    width: 240px;
    min-height: 190px;
    padding: 26px;
}

.visual-card-secondary {
    right: 42px;
    bottom: 72px;
    width: 210px;
    padding: 24px;
}

.visual-card-icon {
    width: 58px;
    height: 58px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 28px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
}

.visual-card-label {
    margin-top: 18px;
    font-size: 20px;
    font-weight: 800;
}

.visual-card-wave {
    margin-top: 22px;
    height: 42px;
    border-radius: 999px;
    background:
        linear-gradient(90deg, rgba(79,140,255,0.16), rgba(109,211,206,0.16)),
        repeating-linear-gradient(90deg, transparent 0 14px, rgba(79,140,255,0.38) 14px 16px);
}

.visual-dots {
    position: absolute;
    left: 52px;
    bottom: 72px;
    display: flex;
    gap: 12px;
}

.visual-dots span {
    width: 12px;
    height: 12px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
    opacity: 0.72;
}

.visual-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(79, 140, 255, 0.18);
}

.visual-ring-1 {
    width: 190px;
    height: 190px;
    right: 72px;
    top: 48px;
}

.visual-ring-2 {
    width: 118px;
    height: 118px;
    right: 126px;
    top: 84px;
}

.section-container {
    width: min(var(--container), calc(100% - 40px));
    margin: 0 auto;
}

.products-section,
.articles-section,
.values-section {
    padding: 76px 0;
}

.section-header {
    max-width: 720px;
    margin-bottom: 34px;
}

.section-title {
    margin: 0;
    font-size: clamp(30px, 4vw, 46px);
    line-height: 1.15;
    letter-spacing: -0.035em;
}

.section-subtitle {
    margin: 14px 0 0;
    color: var(--color-muted);
    font-size: 17px;
}

.products-grid,
.articles-grid,
.values-grid {
    display: grid;
    gap: 22px;
}

.products-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.articles-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.values-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.product-card,
.article-card,
.value-card {
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(226, 232, 240, 0.9);
    background: rgba(255, 255, 255, 0.86);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.045);
    transition: 0.22s ease;
}

.product-card:hover,
.article-card:hover,
.value-card:hover {
    transform: translateY(-4px);
    border-color: rgba(79, 140, 255, 0.34);
    box-shadow: var(--shadow-card);
}

.product-card {
    padding: 26px;
    min-height: 290px;
}

.product-card-featured::before {
    content: "推荐";
    position: absolute;
    top: 36px;
    right: 36px;
    padding: 5px 10px;
    border-radius: 999px;
    color: var(--color-primary-dark);
    background: rgba(79, 140, 255, 0.1);
    font-size: 12px;
    font-weight: 800;
}

.product-card-icon,
.value-icon-wrapper {
    width: 54px;
    height: 54px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(79, 140, 255, 0.16), rgba(109, 211, 206, 0.16));
    color: var(--color-primary-dark);
    font-size: 24px;
}

.product-card-media .product-card-icon {
    width: 64px;
    height: 64px;
    border-radius: 20px;
}

.product-card-media {
    width: 64px;
    height: 64px;
    border-radius: 20px;
    overflow: hidden;
}

.product-card-image {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-card-category,
.article-category {
    display: inline-flex;
    margin-top: 18px;
    color: var(--color-primary-dark);
    font-size: 13px;
    font-weight: 800;
}

.product-card-name,
.article-title,
.value-title {
    margin: 10px 0 0;
    font-size: 22px;
    line-height: 1.25;
    letter-spacing: -0.02em;
}

.product-card-desc,
.article-summary,
.value-desc {
    margin: 14px 0 0;
    color: var(--color-muted);
    font-size: 15px;
}

.product-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 18px;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 5px 9px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    background: #f1f5f9;
    color: #475569;
}

.tag-login {
    background: rgba(79, 140, 255, 0.1);
    color: var(--color-primary-dark);
}

.tag-permission {
    background: rgba(109, 211, 206, 0.16);
    color: #0f766e;
}

.product-card-link,
.article-link {
    display: inline-flex;
    margin-top: 22px;
    color: var(--color-primary-dark);
    font-weight: 800;
}

.product-card-link:hover,
.article-link:hover {
    text-decoration: underline;
}

.article-card {
    padding: 24px;
    min-height: 245px;
}

.article-card-media {
    display: block;
    width: 100%;
    margin: 0 0 18px;
    border-radius: 18px;
    overflow: hidden;
    background: #eef3ff;
}

.article-card-image {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    color: var(--color-muted);
    font-size: 13px;
}

.value-card {
    padding: 28px;
}

.value-icon {
    font-size: 24px;
}

.empty-state {
    padding: 46px 26px;
    text-align: center;
    border: 1px dashed rgba(148, 163, 184, 0.6);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.72);
}

.empty-icon {
    font-size: 34px;
}

.empty-title {
    margin: 12px 0 0;
    font-size: 20px;
}

.empty-desc {
    margin: 8px auto 0;
    max-width: 520px;
    color: var(--color-muted);
}

.cta-section {
    padding: 72px 0;
}

.cta-inner {
    width: min(var(--container), calc(100% - 40px));
    margin: 0 auto;
    padding: 54px;
    border-radius: 34px;
    background:
        radial-gradient(circle at 12% 20%, rgba(255, 255, 255, 0.32), transparent 28%),
        linear-gradient(135deg, #4f8cff, #6dd3ce);
    color: #ffffff;
    box-shadow: 0 24px 60px rgba(79, 140, 255, 0.28);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 36px;
}

.cta-title {
    margin: 0;
    font-size: clamp(28px, 4vw, 44px);
    line-height: 1.15;
    letter-spacing: -0.035em;
}

.cta-desc {
    margin: 14px 0 0;
    max-width: 620px;
    color: rgba(255, 255, 255, 0.88);
}

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

.site-footer {
    margin-top: 24px;
    padding: 54px 0 34px;
    background: #ffffff;
    border-top: 1px solid var(--color-border);
}

.footer-inner {
    width: min(var(--container), calc(100% - 40px));
    margin: 0 auto;
}

.footer-brand {
    max-width: 520px;
}

.footer-desc {
    margin: 14px 0 0;
    color: var(--color-muted);
}

.footer-links {
    display: flex;
    gap: 64px;
    margin-top: 34px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-col h4 {
    margin: 0 0 6px;
    font-size: 15px;
}

.footer-col a {
    color: var(--color-muted);
    font-size: 14px;
}

.footer-col a:hover {
    color: var(--color-primary-dark);
}

.footer-bottom {
    margin-top: 34px;
    padding-top: 22px;
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 24px;
    color: var(--color-muted);
    font-size: 13px;
}

.footer-copy,
.footer-icp,
.footer-email {
    margin: 0;
}

@media (max-width: 980px) {
    .header-nav,
    .btn-nav-cta {
        display: none;
    }

    .hamburger {
        display: inline-block;
    }

    .header-nav.is-open {
        position: absolute;
        top: 78px;
        left: 20px;
        right: 20px;
        display: flex;
        flex-direction: column;
        align-items: stretch;
        border-radius: 22px;
        padding: 14px;
        background: #ffffff;
        box-shadow: var(--shadow-card);
    }

    .hero-inner {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        min-height: 360px;
    }

    .products-grid,
    .articles-grid,
    .values-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .cta-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 680px) {
    .header-inner,
    .section-container,
    .hero-inner,
    .cta-inner,
    .footer-inner {
        width: min(100% - 28px, var(--container));
    }

    .header-inner {
        height: 66px;
    }

    .logo-text {
        font-size: 16px;
    }

    .hero {
        padding: 58px 0 42px;
    }

    .hero-title {
        font-size: 38px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-visual {
        min-height: 310px;
        border-radius: 28px;
    }

    .visual-card-main {
        left: 22px;
        top: 34px;
        width: 210px;
    }

    .visual-card-secondary {
        right: 18px;
        bottom: 34px;
        width: 180px;
    }

    .products-section,
    .articles-section,
    .values-section {
        padding: 52px 0;
    }

    .products-grid,
    .articles-grid,
    .values-grid {
        grid-template-columns: 1fr;
    }

    .cta-inner {
        padding: 34px 24px;
        border-radius: 26px;
    }

    .footer-links {
        flex-direction: column;
        gap: 24px;
    }
}

.product-card-media-image {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    margin-bottom: 20px;
    overflow: hidden;
    border: 1px solid rgba(226, 232, 240, 0.92);
    border-radius: 15px;
    background: #ffffff;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
}

.product-card-image {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: inherit;
    object-fit: cover;
}

.product-card-media-icon {
    width: 64px;
    height: 64px;
}

.product-card-media-icon .product-card-icon {
    width: 64px;
    height: 64px;
    border-radius: 20px;
}