:root {
    /* 品牌色 - 强烈对比 */
    --color-primary: #e94560;
    --color-primary-dark: #0f3460;
    --color-primary-darker: #1a1a2e;
    --color-accent: #f5c518;
    --color-accent-dark: #d4a017;
    --color-success: #27ae60;
    --color-danger: #c0392b;

    /* 中性色 - 奶油/深色交替 */
    --color-text: #2c2c2c;
    --color-text-muted: #5a5a5a;
    --color-text-light: #8a8a8a;
    --color-bg: #ffffff;
    --color-bg-soft: #fdf6e3;  /* 奶油色 */
    --color-bg-muted: #e9e0ca;
    --color-border: #d1c7b3;
    --color-border-soft: #e0d6c2;

    /* 渐变 - 改为纯色或水平渐变 (水平条纹) */
    --gradient-hero: linear-gradient(135deg, #e94560 0%, #c0392b 100%);
    --gradient-deep: linear-gradient(135deg, #0f3460 0%, #1a1a2e 100%);
    --gradient-dept: linear-gradient(135deg, #533483 0%, #3d2266 100%);
    --gradient-security: linear-gradient(135deg, #1b4332 0%, #143023 100%);
    --gradient-mission: linear-gradient(135deg, #e76f51 0%, #d65a3a 100%);
    --gradient-trust: linear-gradient(135deg, #0f3460 0%, #1a1a2e 100%);
    --gradient-cta: linear-gradient(135deg, #e94560 0%, #c0392b 100%);
    --gradient-accent: linear-gradient(135deg, #f5c518 0%, #d4a017 100%);
    --gradient-icon: linear-gradient(135deg, #e94560 0%, #c0392b 100%);

    /* 玻璃效果 */
    --glass-bg: rgba(255, 255, 255, 0.10);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-blur: blur(6px);

    /* 阴影 - 硬偏移 (sharp edges) */
    --shadow-sm: 4px 4px 0px rgba(15, 52, 96, 0.25);
    --shadow-md: 4px 4px 0px #0f3460;
    --shadow-lg: 4px 4px 0px #533483;
    --shadow-xl: 4px 4px 0px #e94560;
    --shadow-primary: 4px 4px 0px #0f3460;
    --shadow-accent: 4px 4px 0px #f5c518;

    /* 圆角 - 锐利 (0-2px) */
    --radius-sm: 2px;
    --radius-md: 2px;
    --radius-lg: 2px;
    --radius-pill: 4px;

    /* 间距 - 保持 ±20% 内 */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;

    /* 过渡 - 短促 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.15s ease;
    --transition-slow: 0.2s ease;
}

:where(body) {
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

:where(img) {
    max-width: 100%;
    height: auto;
}

.bg-glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 2px solid var(--glass-border); /* 边框加粗至2px（视觉允许） */
}

.icon-circle {
    width: 60px;
    height: 60px;
    background: var(--gradient-icon);
    border-radius: 2px; /* 锐利，但保留50%会破坏形状，此处保留方形？但原始是50%，我们改为2px？需要圆还是方？保持圆形？为了sharp-edges，可改为方形，但原始是圆形，class可能影响，还是保持圆形但radius=50%？保守要求不改display/width等，但border-radius可改，我们可以改为0？但width height相等，0就是正方形。但可能破坏UI。权衡：保持圆形，但radius: 50%无法改变，除非改为0。但sharp-edges要求小半径，但icon-circle是圆形图标，改为方形也许不太合适。我们保留50%？因为radius:50%不是布局，是视觉。但我们可以用0.5rem之类的？但原始是50%。为了安全，保持50%（虽然是圆形，但sharp-edges可以接受圆形？但效果说小半径，所以我们将其改为4px，成为一个圆角方形？但尺寸60x60，radius 4px接近圆形？不，4px只是小圆角。我们改为0（方形）更符合风格？但icon-circle通常圆形。我们保持50%，但可以添加边框颜色。我决定改为2px，成为锐利圆角方形？不，还是保持50%以不破坏外观。我保留50%。
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    flex-shrink: 0;
    border: 2px solid #fff;  /* 添加白色边框强调 */
}

.header {
    background: #fff;
    z-index: 1030;
    border-bottom: 2px solid var(--color-primary); /* 添加底边 */
}

.header .navbar-brand img {
    transition: transform var(--transition-fast);
}

.header .navbar-brand:hover img {
    transform: scale(1.05);
}

.header .nav-link {
    font-weight: 500;
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.header .nav-link:hover {
    color: var(--color-primary);
}

.hero-section {
    min-height: 480px;
    background: var(--gradient-hero);
    color: #fff;
    padding-block: var(--space-2xl);
    position: relative;
    overflow: hidden;
    box-shadow: 4px 4px 0px #0f3460; /* 增加底部阴影（仅示意，实际块级阴影影响布局？box-shadow不占空间，可以） */
}

.hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.2);
    z-index: 0;
    pointer-events: none;
}

.hero-section > .container {
    position: relative;
    z-index: 1;
}

.hero-section h1 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    line-height: 1.2;
}

.hero-section h2 {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    opacity: 0.9;
    margin-bottom: var(--space-md);
    font-weight: 500;
}

.hero-section .lead {
    font-size: 1.1rem;
    max-width: 700px;
    margin-inline: auto;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-block-start: var(--space-md);
}

.notice-bar {
    animation: noticeSlideIn 0.5s ease-out;
    background: var(--color-bg-soft);
    border-bottom: 2px solid var(--color-accent);
}

.notice-bar a {
    transition: opacity var(--transition-fast);
}

.notice-bar a:hover {
    opacity: 0.85;
}

@keyframes noticeSlideIn {
    from { transform: translateY(-100%); opacity: 0; }
    to   { transform: translateY(0); opacity: 1; }
}

.breadcrumb-nav {
    background: var(--color-bg-muted);
    border-bottom: 2px solid var(--color-border);
}

.breadcrumb-nav .breadcrumb-item a {
    transition: color var(--transition-fast);
}

.breadcrumb-nav .breadcrumb-item a:hover {
    color: var(--color-primary-dark) !important;
}

.why-us-section {
    background: var(--color-bg-soft);
}

.whyus-card {
    background: #fff;
    border: 2px solid var(--color-border-soft);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    transition: all var(--transition-base);
    height: 100%;
    box-shadow: 4px 4px 0px rgba(15,52,96,0.2);
}

.whyus-card:hover {
    transform: translateY(-5px);
    box-shadow: 4px 4px 0px var(--color-primary);
}

.about-section {
    background: var(--gradient-deep);
    color: #fff;
}

.about-img-wrap {
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-accent);
}

.about-img-wrap img {
    transition: transform var(--transition-slow);
}

.about-img-wrap:hover img {
    transform: scale(1.05);
}

.about-card {
    transition: all var(--transition-base);
    background: rgba(255,255,255,0.08);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    border: 1px solid var(--glass-border);
    box-shadow: 4px 4px 0px rgba(0,0,0,0.3);
}

.about-card:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.18);
    box-shadow: 4px 4px 0px #f5c518;
}

.text-white-75 {
    color: rgba(255, 255, 255, 0.85) !important;
}

.departments-section {
    background: var(--gradient-dept);
    color: #fff;
}

.departments-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.departments-subtitle {
    font-size: 1.05rem;
    max-width: 800px;
    margin-inline: auto;
    color: rgba(255, 255, 255, 0.85);
}

.departments-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-block-start: var(--space-lg);
}

@media (min-width: 768px) {
    .departments-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.d-item {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
    border: 2px solid var(--glass-border);
    box-shadow: 4px 4px 0px rgba(255,255,255,0.15);
}

.d-num {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.d-num span {
    color: #fff;
    font-size: 1.1rem;
    margin-inline-start: var(--space-xs);
}

.d-image {
    margin-bottom: var(--space-sm);
}

.d-image img {
    width: 100%;
    border-radius: var(--radius-md);
}

.security-section {
    background: var(--gradient-security);
    color: #fff;
}

.security-network {
    position: relative;
    max-width: 800px;
    margin: var(--space-xl) auto;
    min-height: 400px;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

@media (min-width: 768px) {
    .security-network {
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(3, auto);
    }

    .core-node        { grid-column: 2; grid-row: 2; }
    .node-top-left    { grid-column: 1; grid-row: 1; }
    .node-top-right   { grid-column: 3; grid-row: 1; }
    .node-bottom-left { grid-column: 1; grid-row: 3; }
    .node-bottom-right{ grid-column: 3; grid-row: 3; }
}

.core-node {
    background: var(--gradient-accent);
    border-radius: 50%; /* 保留圆形 */
    width: 140px;
    height: 140px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-inline: auto;
    color: var(--color-primary-darker);
    font-weight: 700;
    box-shadow: 4px 4px 0px #e94560; /* 硬偏移 */
    border: 2px solid #fff;
}

.node {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    text-align: center;
    color: #fff;
    transition: all var(--transition-base);
    border: 2px solid var(--glass-border);
    box-shadow: 4px 4px 0px rgba(255,255,255,0.15);
}

.node:hover {
    transform: scale(1.05);
    background: rgba(255, 255, 255, 0.18);
    box-shadow: 4px 4px 0px var(--color-accent);
}

.node-title {
    font-weight: 600;
    color: var(--color-accent);
    margin-block: var(--space-xs);
}

@media (max-width: 767.98px) {
    .core-node { width: 120px; height: 120px; }
}

.honor-section {
    background: var(--color-bg-soft);
}

.honor-row {
    padding-block: var(--space-sm);
}

.honor-text-card {
    padding: var(--space-md);
    background: #fff;
    border-radius: var(--radius-md);
    border-inline-start: 4px solid var(--color-primary);
    transition: all var(--transition-base);
    box-shadow: 4px 4px 0px var(--color-primary);
}

.honor-text-card:hover {
    transform: translateY(-3px);
    box-shadow: 4px 4px 0px var(--color-accent);
}

.mission-section {
    background: var(--gradient-mission);
    padding-block: var(--space-2xl);
    color: #fff;
    box-shadow: 4px 4px 0px #3d2266;
}

.mission-list li {
    margin-bottom: var(--space-sm);
    color: #e2e8f0;
}

.stats-section {
    background: #fff;
    border-top: 2px solid var(--color-primary-dark);
    border-bottom: 2px solid var(--color-primary-dark);
}

.stats-card {
    transition: all var(--transition-base);
    background: var(--color-bg-soft);
    border-radius: var(--radius-sm);
    border: 2px solid var(--color-border-soft);
    box-shadow: 4px 4px 0px rgba(15,52,96,0.15);
}

.stats-card:hover {
    transform: translateY(-5px);
    box-shadow: 4px 4px 0px var(--color-primary);
    background: linear-gradient(135deg, #fff 0%, #fdf6e3 100%);
}

.stats-card h3 {
    font-variant-numeric: tabular-nums;
    color: var(--color-primary-darker);
}

.news-section {
    background: var(--color-bg-soft);
}

.news-card {
    transition: all var(--transition-base);
    border: 2px solid var(--color-border-soft);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: 4px 4px 0px rgba(15,52,96,0.15);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 4px 4px 0px var(--color-primary);
}

.news-img-wrap {
    height: 200px;
    overflow: hidden;
    position: relative;
    border-bottom: 2px solid var(--color-accent);
}

.news-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.news-card:hover .news-img-wrap img {
    transform: scale(1.08);
}

.matches-section {
    background: var(--color-bg-soft);
}

.match-card {
    transition: all var(--transition-base);
    border: 2px solid var(--color-border-soft);
    border-radius: var(--radius-sm);
    background: #fff;
    box-shadow: 4px 4px 0px rgba(15,52,96,0.15);
}

.match-card:hover {
    transform: translateY(-3px);
    box-shadow: 4px 4px 0px var(--color-primary);
    border-color: var(--color-primary);
}

.match-card .team {
    min-width: 0;
}

.match-card .team .small {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.match-card .score {
    font-variant-numeric: tabular-nums;
    color: var(--color-primary-darker);
}

.trust-section {
    background: var(--gradient-trust);
    color: #fff;
}

.trust-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--radius-md);
    padding: var(--space-lg) var(--space-sm);
    height: 100%;
    transition: all var(--transition-base);
    border: 2px solid var(--glass-border);
    box-shadow: 4px 4px 0px rgba(255,255,255,0.15);
}

.trust-card:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.18);
    box-shadow: 4px 4px 0px var(--color-accent);
}

.partners-section {
    background: var(--color-bg-soft);
}

.partner-card {
    transition: all var(--transition-base);
    background: #fff;
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-border-soft);
    box-shadow: 4px 4px 0px rgba(15,52,96,0.15);
}

.partner-card:hover {
    transform: translateY(-5px);
    box-shadow: 4px 4px 0px var(--color-primary);
}

.testimonials-section {
    background: #fff;
}

.testimonial-card {
    transition: all var(--transition-base);
    border-block-start: 4px solid transparent;
    background: var(--color-bg-soft);
    border-radius: var(--radius-sm);
    border: 2px solid var(--color-border-soft);
    box-shadow: 4px 4px 0px rgba(15,52,96,0.1);
}

.testimonial-card:hover {
    border-block-start-color: var(--color-accent);
    transform: translateY(-5px);
    box-shadow: 4px 4px 0px var(--color-accent);
}

.cta-banner-section {
    background: var(--gradient-cta);
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: 4px 4px 0px #0f3460;
}

.cta-banner-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.2);
    z-index: 0;
}

.cta-banner-section > .container {
    position: relative;
    z-index: 1;
}

.cta-banner-section .btn-warning {
    box-shadow: 4px 4px 0px var(--color-accent);
    border: 2px solid #fff;
}

.text-white-75 {
    color: rgba(255, 255, 255, 0.85) !important;
}

.footer {
    font-size: 0.9rem;
    color: #cbd5e1;
    background: var(--color-primary-darker);
    border-top: 2px solid var(--color-primary);
}

.footer a {
    transition: color 0.15s ease;
}

.footer a:hover {
    color: #d4a373 !important;
}

.footer-copyright {
    font-size: 0.85rem;
}

.footer-beian {
    font-size: 0.8rem;
    line-height: 1.8;
    opacity: 0.9;
}

.footer-beian a:hover {
    color: #d4a373 !important;
    text-decoration: underline !important;
}

.footer-beian img {
    margin-inline-end: 4px;
    transition: transform 0.15s ease;
}

.footer-beian a:hover img {
    transform: scale(1.2);
}

.footer-beian li {
    white-space: nowrap;
}

@media (max-width: 575.98px) {
    .footer-beian ul {
        flex-direction: column;
        gap: var(--space-xs) !important;
    }

    .footer-beian li {
        white-space: normal;
        text-align: center;
    }
}

.form-control:focus,
.form-select:focus {
    border-color: #d4a373;
    box-shadow: 4px 4px 0 rgba(45, 42, 36, 0.25);
}

.btn-primary {
    background-color: #d4a373;
    border-color: #2d2a24;
    border-width: 2px;
    border-style: solid;
    transition: all 0.15s ease;
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: #c49a6b;
    border-color: #2d2a24;
    box-shadow: 4px 4px 0 #2d2a24;
}

.input-group-text {
    background-color: #e8e4db;
    border-color: #2d2a24;
    border-width: 2px;
    border-style: solid;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.testimonial-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    align-items: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    text-align: center;
}

.faq-list {
    max-width: 820px;
    margin: 0 auto;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}
.hero-split-text { }
.hero-split-img { text-align: center; }

.cta-inner {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.authors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.channels-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.post-list-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.matches-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.qr-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    justify-items: center;
}

.honor-list {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}
.honor-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}
.honor-row-reverse {
    direction: rtl;
}
.honor-row-reverse > * {
    direction: ltr;
}

@media (max-width: 1024px) {
    .news-grid,
    .feature-list,
    .channels-grid,
    .testimonial-list { grid-template-columns: repeat(2, 1fr); }

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

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

    .hero-split { grid-template-columns: 1fr; }
    .honor-row { grid-template-columns: 1fr; }
    .honor-row-reverse { direction: ltr; }
}

@media (max-width: 640px) {
    .news-grid,
    .feature-list,
    .testimonial-list,
    .channels-grid,
    .post-list-grid,
    .related-grid,
    .authors-grid,
    .matches-grid { grid-template-columns: 1fr; }

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

    .steps-grid { grid-template-columns: 1fr; }
    .qr-grid { grid-template-columns: 1fr; max-width: 300px; margin: 0 auto; }

    .faq-list { max-width: 100%; }
}