:root {
    --primary-color: #0891b2;
    --secondary-color: #0e7490;
    --accent-color: #f97316;
    --accent-soft: #ffedd5;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --light-bg: #f1f5f9;
    --surface: #ffffff;
    --dark-bg: #0f172a;
    --border: #e2e8f0;
    --radius: 14px;
    --radius-sm: 8px;
    --section-py: 3.75rem;
    --card-pad: 1.5rem;
    --grid-gap: 1.25rem;
    --card-border: 1px solid var(--border);
    --shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
    --shadow-lg: 0 8px 28px rgba(8, 145, 178, 0.12);
    --transition-speed: 0.3s;
    --transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    color: var(--text-color);
    line-height: 1.65;
    background: var(--surface);
    overflow-x: hidden;
}

.zc153bcontainer.container {
    max-width: 1140px;
    padding-left: 1rem;
    padding-right: 1rem;
}

/* 网格子项防撑破、文字防溢出 */
.zc153bfeature-grid > *,
.zc153bstats-grid > *,
.zc153bdownload-grid > *,
.zc153bsecurity-grid > *,
.zc153bcertificate-row > *,
.zc153bsteps > *,
.zc153bfaq-grid > * {
    min-width: 0;
}

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

/* —— 导航 —— */
.zc153bnavbar {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 1030;
}

.zc153bnavbar-brand img {
    height: 42px;
}

.zc153bnav-link {
    color: var(--text-color) !important;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.45rem 0.85rem !important;
    border-radius: var(--radius-sm);
    transition: color var(--transition-speed), background var(--transition-speed);
}

.zc153bnav-link:hover,
.zc153bnav-link:focus {
    color: var(--primary-color) !important;
    background: rgba(8, 145, 178, 0.08);
}

.zc153bnav-cta {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff !important;
    margin-left: 0.15rem;
    white-space: nowrap;
}

@media (min-width: 992px) and (max-width: 1199px) {
    .zc153bnav-link {
        font-size: 0.88rem !important;
        padding: 0.4rem 0.55rem !important;
    }
}

.zc153bnav-cta:hover {
    color: #fff !important;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    box-shadow: var(--shadow-lg);
}

/* —— 英雄区 —— */
.zc153bhero-section {
    position: relative;
    padding: 3.5rem 0 4rem;
    background: linear-gradient(160deg, #ecfeff 0%, #f0fdfa 35%, #fff 70%);
    overflow: hidden;
}

.zc153bhero-section::before {
    content: '';
    position: absolute;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(8, 145, 178, 0.12) 0%, transparent 70%);
    top: -120px;
    right: -80px;
    pointer-events: none;
}

.zc153bhero-section::after {
    content: '';
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.08) 0%, transparent 70%);
    bottom: -60px;
    left: -40px;
    pointer-events: none;
}

.zc153bhero-content {
    position: relative;
    z-index: 1;
}

.zc153bhero-badge {
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.4rem 0.5rem;
    max-width: 100%;
    padding: 0.4rem 0.85rem;
    background: var(--surface);
    border: var(--card-border);
    border-radius: 999px;
    font-size: 0.82rem;
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow);
}

.zc153bhero-badge i {
    color: var(--accent-color);
}

.zc153bhero-title {
    font-size: clamp(1.85rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.2;
    color: var(--dark-bg);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.zc153bhero-title span {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.zc153bhero-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 540px;
    margin-bottom: 1.75rem;
}

.zc153bhero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.zc153bbtn-primary-custom {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    color: #fff;
    padding: 0.7rem 1.4rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.zc153bbtn-primary-custom:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.zc153bbtn-outline-custom {
    background: var(--surface);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.65rem 1.35rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: all var(--transition-speed);
}

.zc153bbtn-outline-custom:hover {
    background: var(--primary-color);
    color: #fff;
}

.zc153bhero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.zc153bhero-trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.zc153bhero-trust-item i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

.zc153bhero-image-wrap {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.zc153bhero-image-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: var(--card-pad);
    box-shadow: var(--shadow-lg);
    border: var(--card-border);
    max-width: 340px;
    width: 100%;
    margin: 0 auto;
}

.zc153bhero-image {
    width: 100%;
    border-radius: var(--radius-sm);
    object-fit: contain;
}

.zc153bhero-image-shadow {
    display: none;
}

/* —— 通用区块标题 —— */
.zc153bsection-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 2.25rem;
    padding: 0 0.25rem;
}

.zc153bsection-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.zc153bsection-head h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 800;
    color: var(--dark-bg);
    margin-bottom: 0.75rem;
}

.zc153bsection-head p {
    color: var(--text-muted);
    margin: 0;
    font-size: 1.05rem;
}

/* —— 产品亮点 —— */
.zc153bfeatures-section {
    padding: var(--section-py) 0;
    background: var(--surface);
}

.zc153bfeature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--grid-gap);
}

.zc153bfeature-card {
    background: var(--light-bg);
    border: var(--card-border);
    border-radius: var(--radius);
    padding: var(--card-pad);
    height: 100%;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed);
}

.zc153bfeature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: rgba(8, 145, 178, 0.3);
    background: var(--surface);
}

.zc153bfeature-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.15), rgba(14, 116, 144, 0.08));
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    margin-bottom: 1rem;
}

.zc153bfeature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    color: var(--dark-bg);
}

.zc153bfeature-card p {
    font-size: 0.92rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.6;
}

/* —— 实力数据 —— */
.zc153bstats-section {
    padding: var(--section-py) 0;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #164e63 100%);
    color: #fff;
}

.zc153bstats-section .zc153bsection-head {
    margin-bottom: 2rem;
}

.zc153bstats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--grid-gap);
}

.zc153bstat-item {
    text-align: center;
    padding: 1.15rem 0.75rem;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.zc153bstat-number {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 0.35rem;
    color: #67e8f9;
}

.zc153bstat-label {
    font-size: 0.95rem;
    opacity: 0.85;
}

/* —— 注册引导 —— */
.zc153bregister-section {
    padding: var(--section-py) 0;
    background: var(--light-bg);
}

.zc153bregister-card {
    background: var(--surface);
    border-radius: var(--radius);
    border: var(--card-border);
    padding: 2rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.zc153bsteps {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.875rem;
    margin-top: 0;
}

.zc153bstep-item {
    text-align: center;
    padding: 1rem 0.65rem;
    background: var(--light-bg);
    border: var(--card-border);
    border-radius: var(--radius-sm);
    position: relative;
}

.zc153bstep-num {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.75rem;
    font-size: 0.95rem;
}

.zc153bstep-item h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.zc153bstep-item p {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin: 0;
}

/* —— 下载区 —— */
.zc153bdownload-section {
    padding: var(--section-py) 0;
    background: var(--surface);
}

.zc153bdownload-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--grid-gap);
}

.zc153bdownload-card {
    background: var(--surface);
    border: var(--card-border);
    border-radius: var(--radius);
    padding: var(--card-pad);
    height: 100%;
    display: flex;
    flex-direction: column;
    min-width: 0;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed);
}

.zc153bdownload-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.zc153bdownload-card.featured {
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow);
}

.zc153bplatform-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #fff;
    margin-bottom: 1rem;
}

.zc153bios-icon {
    background: linear-gradient(135deg, #6366f1, #4f46e5);
}

.zc153bandroid-icon {
    background: linear-gradient(135deg, #22c55e, #16a34a);
}

.zc153bwin-icon {
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
}

.zc153bdownload-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.zc153bdownload-card .platform-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.zc153bdownload-info {
    flex: 1;
    margin-bottom: 1.25rem;
}

.zc153binfo-item {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.88rem;
    color: var(--text-muted);
}

.zc153binfo-item span {
    flex: 1;
    min-width: 0;
    word-break: break-word;
}

.zc153binfo-item i {
    color: var(--primary-color);
    margin-top: 0.15rem;
    flex-shrink: 0;
}

.zc153bdownload-action .btn,
.zc153bbtn {
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.zc153bdownload-tips {
    margin-top: 2rem;
    padding: 1.15rem 1.25rem;
    background: var(--accent-soft);
    border-radius: var(--radius-sm);
    border: var(--card-border);
    border-left: 3px solid var(--accent-color);
}

.zc153bdownload-tips p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-color);
}

/* —— 安全保障 —— */
.zc153bsecurity-section {
    padding: var(--section-py) 0;
    background: var(--light-bg);
}

.zc153bsecurity-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--grid-gap);
}

.zc153bsecurity-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: var(--card-pad);
    height: 100%;
    border: var(--card-border);
    text-align: center;
    min-width: 0;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.zc153bsecurity-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.zc153bsecurity-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    margin: 0 auto 1rem;
}

.zc153bsecurity-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-bg);
}

.zc153bsecurity-features {
    text-align: left;
}

.zc153bfeature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.45rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.zc153bfeature-item span {
    flex: 1;
    min-width: 0;
    word-break: break-word;
    line-height: 1.45;
}

.zc153bfeature-item i {
    color: var(--primary-color);
    font-size: 0.75rem;
}

.zc153bcertificate-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--grid-gap);
    margin-top: 2rem;
}

.zc153bcertificate-card {
    background: var(--surface);
    border: var(--card-border);
    border-radius: var(--radius);
    padding: 1.25rem 1rem;
    text-align: center;
    min-width: 0;
}

.zc153bcertificate-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.zc153bcertificate-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.zc153bcertificate-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
}

/* —— FAQ —— */
.zc153bfaq-section {
    padding: var(--section-py) 0;
    background: var(--surface);
}

.zc153bfaq-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--grid-gap);
    max-width: 960px;
    margin: 0 auto;
    align-items: start;
}

.zc153bfaq-item {
    border: var(--card-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--surface);
}

.zc153bfaq-item.accordion-item {
    border: var(--card-border);
}

.zc153bfaq-item .accordion-button {
    font-weight: 600;
    font-size: 0.92rem;
    padding: 0.9rem 1rem;
    background: var(--surface);
    color: var(--dark-bg);
    box-shadow: none;
    white-space: normal;
    text-align: left;
    line-height: 1.45;
}

.zc153bfaq-item .accordion-button:not(.collapsed) {
    background: rgba(8, 145, 178, 0.08);
    color: var(--primary-color);
}

.zc153bfaq-item .accordion-body {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
    padding: 0 1rem 0.9rem;
}

/* —— 文章区 —— */
.zc153barticle-section {
    padding: var(--section-py) 0;
    background: var(--light-bg);
}

.zc153barticle-section .row {
    --bs-gutter-x: 1rem;
    --bs-gutter-y: 1rem;
}

.zc153barticle-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.zc153barticle-header h2 {
    font-size: 1.75rem;
    font-weight: 800;
    margin: 0;
    color: var(--dark-bg);
}

.zc153barticle-card {
    background: var(--surface);
    border: var(--card-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    min-width: 0;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.zc153barticle-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.zc153bthumb-home {
    height: 120px;
    object-fit: cover;
    width: 100%;
}

.zc153barticle-card .card-body {
    padding: 0.85rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.zc153barticle-card h3 {
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: break-word;
}

.zc153barticle-card h3 a {
    color: var(--dark-bg);
    text-decoration: none;
}

.zc153barticle-card h3 a:hover {
    color: var(--primary-color);
}

/* —— 页脚 —— */
.zc153bfooter {
    background: var(--dark-bg);
    color: #94a3b8;
    padding: 4rem 0 2rem;
}

.zc153bfooter p {
    font-size: 0.9rem;
    line-height: 1.6;
}

.zc153bfooter-title {
    color: #f1f5f9;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

.zc153bfooter-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.zc153bfooter-links li {
    margin-bottom: 0.6rem;
}

.zc153bfooter-link {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-speed);
}

.zc153bfooter-link:hover {
    color: #67e8f9;
}

.zc153bfriend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.zc153bfriend-links a {
    color: #94a3b8;
    font-size: 0.88rem;
    text-decoration: none;
}

.zc153bfriend-links a:hover {
    color: #67e8f9;
}

.zc153bfooter-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    margin-top: 2.5rem;
    text-align: center;
}

.zc153bfooter-bottom a {
    color: #94a3b8;
    text-decoration: none;
}

.zc153bfooter-bottom a:hover {
    color: #67e8f9;
}

/* —— Bootstrap 按钮覆盖 —— */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

/* —— 列表/内页 —— */
.zc153bpage-banner {
    background: linear-gradient(135deg, #ecfeff, #f0fdfa);
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--border);
}

.pagebar .pagelist {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.pagebar .pagelist li {
    display: inline-flex;
    margin: 0;
}

/* 列表/内页卡片边框统一 */
.zc153bpy-5 .card {
    border: var(--card-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow) !important;
    overflow: hidden;
}

.zc153bpy-5 .card .card-body {
    padding: 1.25rem;
}

/* —— 响应式 —— */
@media (max-width: 1199px) {
    .zc153bsecurity-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 991px) {
    :root {
        --section-py: 3rem;
        --card-pad: 1.25rem;
    }

    .zc153bfeature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .zc153bstats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .zc153bdownload-grid {
        grid-template-columns: 1fr;
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .zc153bsecurity-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .zc153bsteps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        margin-top: 1.25rem;
    }

    .zc153bregister-card {
        padding: 1.5rem;
    }

    .zc153bcertificate-row {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
}

/* —— 手机端 —— */
@media (max-width: 767px) {
    :root {
        --section-py: 2.5rem;
        --grid-gap: 0.875rem;
        --card-pad: 1.15rem;
    }

    .zc153bcontainer.container {
        padding-left: 0.875rem;
        padding-right: 0.875rem;
    }

    /* 导航 */
    .zc153bnavbar {
        padding: 0.5rem 0;
    }

    .zc153bnavbar .container {
        align-items: center;
    }

    .zc153bnavbar-brand img {
        height: 36px;
    }

    .zc153bnavbar .navbar-collapse {
        margin-top: 0.65rem;
        padding: 0.75rem;
        background: var(--surface);
        border: var(--card-border);
        border-radius: var(--radius-sm);
        box-shadow: var(--shadow);
        max-height: min(75vh, 520px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .zc153bnavbar .navbar-nav {
        width: 100%;
        margin-left: 0 !important;
        gap: 0.15rem;
    }

    .zc153bnavbar .nav-item {
        width: 100%;
    }

    .zc153bnavbar .nav-link {
        display: block;
        width: 100%;
        text-align: center;
        padding: 0.6rem 0.75rem !important;
        font-size: 0.92rem;
    }

    .zc153bnav-cta {
        margin-left: 0 !important;
        margin-top: 0.35rem;
        display: flex !important;
        justify-content: center;
        white-space: normal;
    }

    /* 英雄区 */
    .zc153bhero-section {
        padding: 2rem 0 2.5rem;
    }

    .zc153bhero-section::before,
    .zc153bhero-section::after {
        opacity: 0.5;
    }

    .zc153bhero-title {
        font-size: 1.65rem;
    }

    .zc153bhero-subtitle {
        font-size: 0.95rem;
        max-width: 100%;
        margin-bottom: 1.25rem;
    }

    .zc153bhero-buttons {
        flex-direction: column;
        gap: 0.65rem;
        margin-bottom: 1.5rem;
    }

    .zc153bhero-buttons a {
        width: 100%;
        justify-content: center;
        box-sizing: border-box;
    }

    .zc153bhero-trust {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.65rem;
    }

    .zc153bhero-image-wrap {
        padding: 0.5rem 0 0;
    }

    .zc153bhero-image-card {
        max-width: 100%;
        padding: 1.15rem;
    }

    .zc153bsection-head {
        margin-bottom: 1.5rem;
    }

    .zc153bsection-head h2 {
        font-size: 1.35rem;
    }

    .zc153bsection-head p {
        font-size: 0.92rem;
    }

    /* 区块网格 */
    .zc153bfeature-grid,
    .zc153bfaq-grid {
        grid-template-columns: 1fr;
    }

    .zc153bstats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.75rem;
    }

    .zc153bstat-number {
        font-size: 1.5rem;
    }

    .zc153bstat-label {
        font-size: 0.82rem;
    }

    .zc153bregister-card {
        padding: 1.25rem;
    }

    .zc153bregister-card .zc153bbtn-primary-custom {
        display: flex;
        width: 100%;
        justify-content: center;
        box-sizing: border-box;
    }

    .zc153bsteps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.65rem;
    }

    .zc153bdownload-grid {
        max-width: 100%;
    }

    .zc153bdownload-action .btn {
        width: 100%;
        white-space: normal;
    }

    .zc153bdownload-tips {
        padding: 0.9rem 1rem;
        font-size: 0.9rem;
    }

    .zc153bsecurity-grid {
        grid-template-columns: 1fr;
    }

    .zc153bcertificate-row {
        max-width: 100%;
    }

    /* 文章区 */
    .zc153barticle-header {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }

    .zc153barticle-header h2 {
        font-size: 1.35rem;
    }

    .zc153barticle-header .btn {
        width: 100%;
    }

    .zc153barticle-section .row {
        --bs-gutter-x: 0.75rem;
        --bs-gutter-y: 0.75rem;
    }

    .zc153bthumb-home {
        height: 140px !important;
    }

    /* 页脚 */
    .zc153bfooter {
        padding: 2.5rem 0 1.5rem;
        text-align: center;
    }

    .zc153bfooter .col-md-4,
    .zc153bfooter .col-12 {
        text-align: center;
    }

    .zc153bfooter-brand,
    .zc153bfooter .d-inline-block {
        margin-left: auto;
        margin-right: auto;
    }

    .zc153bfooter-links {
        margin-bottom: 0.5rem;
    }

    .zc153bfriend-links {
        justify-content: center;
    }

    .zc153bfooter-bottom {
        margin-top: 1.5rem;
        padding-top: 1.25rem;
        font-size: 0.85rem;
    }

    .zc153bfooter-bottom p {
        line-height: 1.7;
        word-break: break-word;
    }

    /* 列表/内页 */
    .zc153bpage-banner {
        padding: 1.5rem 0;
    }

    .zc153bpage-banner h1 {
        font-size: 1.25rem;
    }

    .zc153bpy-5 {
        padding-top: 2rem !important;
        padding-bottom: 2rem !important;
    }

    .zc153bpy-5 .card .card-body {
        padding: 1rem;
    }

    .listbox .e2 li .row {
        flex-direction: column;
    }

    .listbox .e2 li .col-4,
    .listbox .e2 li .col-8 {
        width: 100%;
        max-width: 100%;
        flex: 0 0 100%;
    }

    .zc153bthumb-list {
        height: 160px !important;
        width: 100%;
    }

    .listbox .e2 li h2.h5 {
        font-size: 1rem;
    }

    .listbox .e2 li p {
        font-size: 0.88rem;
    }

    aside .d-flex.gap-2 {
        align-items: flex-start;
    }

    aside .d-flex.gap-2 > a:last-child {
        flex: 1;
        min-width: 0;
        font-size: 0.9rem;
        line-height: 1.45;
        word-break: break-word;
    }

    .zc153bthumb-side {
        height: 56px !important;
        width: 72px !important;
        flex: 0 0 72px !important;
    }

    .zc153bthumb-related {
        height: 120px !important;
    }

    .zc153barticle-content {
        font-size: 0.95rem;
        line-height: 1.75;
        overflow-wrap: anywhere;
    }

    .zc153barticle-content img {
        max-width: 100% !important;
        height: auto !important;
    }

    .zc153bthumb-cover {
        max-width: 100% !important;
        width: 100%;
        height: auto !important;
        min-height: 160px;
        max-height: 220px;
        object-fit: cover;
    }

    .pagebar .pagelist {
        justify-content: center;
    }
}

@media (max-width: 575px) {
    .zc153bstats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .zc153bsteps {
        grid-template-columns: 1fr;
    }

    .zc153bstat-item {
        padding: 0.9rem 0.5rem;
    }

    .zc153bhero-badge {
        border-radius: var(--radius-sm);
        font-size: 0.78rem;
    }

    .zc153bfaq-item .accordion-button {
        font-size: 0.88rem;
        padding: 0.8rem 0.85rem;
    }

    .zc153bthumb-home {
        height: 120px !important;
    }
}

@media (max-width: 380px) {
    .zc153bstats-grid {
        grid-template-columns: 1fr;
    }

    .zc153bfooter-bottom p {
        font-size: 0.8rem;
    }
}