/* OKX / 欧易下载官网 — 全新视觉体系 */
:root {
    --primary: #5b21b6;
    --primary-dark: #3b0764;
    --primary-light: #7c3aed;
    --accent: #14b8a6;
    --accent-warm: #f59e0b;
    --text: #1e1b2e;
    --text-muted: #5c5670;
    --bg: #f7f5fc;
    --surface: #ffffff;
    --border: #e8e4f0;
    --shadow: 0 4px 24px rgba(59, 7, 100, 0.08);
    --shadow-lg: 0 12px 40px rgba(59, 7, 100, 0.12);
    --radius: 12px;
    --radius-lg: 16px;
    --container: 1140px;
    --nav-h: 68px;
    --space-section: 3.5rem;
    --space-card: 1.25rem;
    --gap-grid: 1.25rem;
    --border-width: 1px;
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 0.28s var(--ease);
}

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

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

section[id],
.z1bc6fsection[id] {
    scroll-margin-top: calc(var(--nav-h) + 12px);
}

body {
    margin: 0;
    font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    color: var(--text);
    line-height: 1.65;
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: clip;
}

/* 网格子项防撑破容器 */
.z1bc6ffeatures-grid > *,
.z1bc6fdownload-grid > *,
.z1bc6fsecurity-grid > *,
.z1bc6fcompare-grid > *,
.z1bc6ffaq-grid > *,
.z1bc6farticles-grid > *,
.z1bc6fcert-grid > *,
.z1bc6fstats-grid > *,
.z1bc6fhero-grid > *,
.z1bc6fregister-panel > * {
    min-width: 0;
}

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

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }

.z1bc6fcontainer {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* —— 导航 —— */
.z1bc6fnavbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    isolation: isolate;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    height: var(--nav-h);
}

.z1bc6fnavbar .z1bc6fcontainer {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: 1rem;
}

.z1bc6fnavbar-brand img { height: 42px; width: auto; }

.z1bc6fnavbar-toggler {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    cursor: pointer;
}

.z1bc6fnavbar-toggler span {
    display: block;
    width: 20px;
    height: 2px;
    margin: 0 auto;
    background: var(--primary-dark);
    border-radius: 2px;
    transition: var(--transition);
}

.z1bc6fnavbar-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.15rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.z1bc6fnav-link {
    display: block;
    padding: 0.5rem 0.85rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text) !important;
    border-radius: 8px;
    white-space: nowrap;
}

.z1bc6fnav-link:hover,
.z1bc6fnav-item.active .z1bc6fnav-link {
    color: var(--primary) !important;
    background: rgba(91, 33, 182, 0.08);
}

.z1bc6fnav-collapse { display: flex; align-items: center; }

/* —— 按钮 —— */
.z1bc6fbtn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.75rem 1.35rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
    text-align: center;
    line-height: 1.3;
}

.z1bc6fbtn:active { transform: scale(0.98); }

.z1bc6fbtn-primary {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: #fff;
    box-shadow: 0 4px 16px rgba(91, 33, 182, 0.35);
}

.z1bc6fbtn-primary:hover {
    color: #fff;
    box-shadow: 0 8px 24px rgba(91, 33, 182, 0.4);
    transform: translateY(-2px);
}

.z1bc6fbtn-light {
    background: #fff;
    color: var(--primary-dark);
    border: 1px solid var(--border);
}

.z1bc6fbtn-light:hover {
    color: var(--primary);
    border-color: var(--primary-light);
}

.z1bc6fbtn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.z1bc6fbtn-outline:hover {
    background: var(--primary);
    color: #fff;
}

.z1bc6fbtn-accent {
    background: linear-gradient(135deg, var(--accent), #0d9488);
    color: #fff;
    box-shadow: 0 4px 16px rgba(20, 184, 166, 0.35);
}

.z1bc6fbtn-accent:hover { color: #fff; transform: translateY(-2px); }

.z1bc6fbtn-sm { padding: 0.5rem 1rem; font-size: 0.85rem; }

/* —— 统一卡片边框 —— */
.z1bc6ffeature-card,
.z1bc6fdownload-card,
.z1bc6fsecurity-card,
.z1bc6fcertificate-card,
.z1bc6ffaq-item,
.z1bc6farticle-card,
.z1bc6fcompare-card,
.z1bc6fregister-panel,
.z1bc6fcard {
    border: var(--border-width) solid var(--border);
}

.z1bc6fcompare-card {
    border-left-width: 3px;
    box-shadow: none;
}

/* —— 区块通用 —— */
.z1bc6fsection {
    padding: var(--space-section) 0;
}

.z1bc6fsection-alt { background: var(--surface); }

.z1bc6fsection-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 2rem;
    padding: 0 0.25rem;
}

.z1bc6fsection-tag {
    display: inline-block;
    padding: 0.35rem 0.9rem;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--primary);
    background: rgba(91, 33, 182, 0.1);
    border-radius: 999px;
    margin-bottom: 0.75rem;
}

.z1bc6fsection-header h2 {
    margin: 0 0 0.75rem;
    font-size: clamp(1.5rem, 3vw, 2.1rem);
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1.25;
}

.z1bc6fsection-header p {
    margin: 0;
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* —— Hero —— */
.z1bc6fhero-section {
    position: relative;
    padding: 3rem 0 3.5rem;
    background: linear-gradient(145deg, var(--primary-dark) 0%, #6d28d9 45%, #4c1d95 100%);
    color: #fff;
    overflow: hidden;
}

.z1bc6fhero-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(20, 184, 166, 0.25) 0%, transparent 50%),
        radial-gradient(circle at 85% 15%, rgba(245, 158, 11, 0.15) 0%, transparent 40%);
    pointer-events: none;
}

.z1bc6fhero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 2rem;
    align-items: center;
}

.z1bc6fhero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.85rem;
    margin-bottom: 1rem;
    font-size: 0.82rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 999px;
}

.z1bc6fhero-title {
    margin: 0 0 1rem;
    font-size: clamp(1.85rem, 4.5vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.z1bc6fhero-subtitle {
    margin: 0 0 1.75rem;
    font-size: 1.05rem;
    line-height: 1.75;
    opacity: 0.92;
    max-width: 540px;
}

.z1bc6fhero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.z1bc6fhero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.z1bc6fhero-image-container {
    position: relative;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
    padding: 0.75rem 0.5rem;
}

.z1bc6fhero-image {
    max-width: 260px;
    width: 100%;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.z1bc6fhero-float {
    position: absolute;
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary-dark);
    border-radius: 8px;
    box-shadow: var(--shadow);
    white-space: nowrap;
    max-width: calc(100% - 1rem);
    overflow: hidden;
    text-overflow: ellipsis;
}

.z1bc6fhero-float--1 { top: 8%; right: 0.25rem; }
.z1bc6fhero-float--2 { bottom: 12%; left: 0.25rem; }

/* —— 信任条 —— */
.z1bc6ftrust-bar {
    padding: 0.9rem 0;
    background: var(--surface);
    border-bottom: var(--border-width) solid var(--border);
}

.z1bc6ftrust-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.65rem 1.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.z1bc6ftrust-list li::before {
    content: "✓ ";
    color: var(--accent);
    font-weight: 700;
}

/* —— 特性网格 —— */
.z1bc6ffeatures-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--gap-grid);
    align-items: stretch;
}

.z1bc6ffeature-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: var(--space-card);
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition), box-shadow var(--transition);
}

.z1bc6ffeature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(91, 33, 182, 0.2);
}

.z1bc6ffeature-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: linear-gradient(135deg, rgba(91, 33, 182, 0.12), rgba(20, 184, 166, 0.12));
    border-radius: 12px;
    margin-bottom: 1rem;
}

.z1bc6ffeature-card h3 {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    color: var(--primary-dark);
}

.z1bc6ffeature-card p {
    margin: 0;
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* —— 统计 —— */
.z1bc6fstats-section {
    padding: 2.5rem 0;
    background: linear-gradient(90deg, var(--primary-dark), #6d28d9);
    color: #fff;
}

.z1bc6fstats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--gap-grid);
    text-align: center;
}

.z1bc6fstat-item {
    padding: 0.5rem 0.25rem;
}

.z1bc6fstat-number {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 0.35rem;
}

.z1bc6fstat-label {
    font-size: 0.95rem;
    opacity: 0.88;
}

/* —— 注册引导 —— */
.z1bc6fregister-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: var(--gap-grid);
    align-items: stretch;
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    box-shadow: var(--shadow);
}

.z1bc6fregister-panel .z1bc6fcompare-card {
    height: 100%;
    margin: 0;
    padding: var(--space-card);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.z1bc6fsteps {
    list-style: none;
    margin: 1.5rem 0 0;
    padding: 0;
    counter-reset: step;
}

.z1bc6fsteps li {
    position: relative;
    padding-left: 2.75rem;
    margin-bottom: 1.1rem;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.z1bc6fsteps li::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    color: #fff;
    background: var(--primary);
    border-radius: 50%;
}

.z1bc6fsteps li strong { color: var(--text); display: block; margin-bottom: 0.15rem; }

/* —— 下载 —— */
.z1bc6fdownload-section { background: var(--bg); }

.z1bc6fdownload-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--gap-grid);
    align-items: stretch;
}

.z1bc6fdownload-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: var(--space-card);
    display: flex;
    flex-direction: column;
    min-height: 100%;
    transition: box-shadow var(--transition);
}

.z1bc6fdownload-card .z1bc6fbtn {
    width: 100%;
    margin-top: auto;
    padding: 0.65rem 1rem;
    font-size: 0.9rem;
    white-space: normal;
}

.z1bc6fdownload-card-head h3 {
    word-break: break-word;
}

.z1bc6fdownload-card:hover { box-shadow: var(--shadow-lg); }

.z1bc6fdownload-card-head {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.z1bc6fplatform-icon {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    border-radius: 12px;
    color: #fff;
}

.z1bc6fios-icon { background: linear-gradient(135deg, #007aff, #0051a8); }
.z1bc6fandroid-icon { background: linear-gradient(135deg, #3ddc84, #1b8f4e); }
.z1bc6fwin-icon { background: linear-gradient(135deg, #0ea5e9, #0369a1); }
.z1bc6fweb-icon { background: linear-gradient(135deg, var(--primary-light), var(--primary-dark)); }

.z1bc6fdownload-card h3 {
    margin: 0 0 0.2rem;
    font-size: 1.1rem;
    color: var(--primary-dark);
}

.z1bc6fdownload-card .muted {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.z1bc6fdownload-info {
    background: var(--bg);
    border-radius: 8px;
    padding: 0.85rem 1rem;
    margin-bottom: 1rem;
    flex: 1;
}

.z1bc6finfo-item {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.z1bc6finfo-item:last-child { margin-bottom: 0; }

.z1bc6finfo-item::before {
    content: "●";
    color: var(--accent);
    font-size: 0.5rem;
    margin-top: 0.45rem;
    flex-shrink: 0;
}

/* —— 安全 —— */
.z1bc6fsecurity-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--gap-grid);
    align-items: stretch;
}

.z1bc6fsecurity-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: var(--space-card);
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition), box-shadow var(--transition);
}

.z1bc6fsecurity-card:hover { transform: translateY(-3px); }

.z1bc6fsecurity-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border-radius: 50%;
}

.z1bc6fsecurity-card h3 {
    margin: 0 0 0.75rem;
    font-size: 1rem;
    color: var(--primary-dark);
}

.z1bc6fsecurity-features {
    text-align: left;
    flex: 1;
    margin-top: auto;
}

.z1bc6fregister-cta {
    margin-top: 1.25rem;
    margin-bottom: 0;
}

.z1bc6ffooter-friends {
    margin-bottom: 1.5rem;
}

.z1bc6ffooter-brand img {
    filter: brightness(0) invert(1);
}

.z1bc6ffeature-item {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 0.35rem 0;
    border-bottom: 1px solid var(--border);
}

.z1bc6ffeature-item:last-child { border-bottom: none; }

.z1bc6fcert-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--gap-grid);
    margin-top: 1.75rem;
}

.z1bc6fcertificate-card {
    background: linear-gradient(180deg, var(--surface), var(--bg));
    border-radius: var(--radius);
    padding: var(--space-card);
    text-align: center;
    height: 100%;
}

.z1bc6fcertificate-card .z1bc6fsecurity-icon {
    width: 44px;
    height: 44px;
    font-size: 1rem;
    margin-bottom: 0.65rem;
}

.z1bc6fcertificate-card h4 {
    margin: 0.5rem 0 0.35rem;
    font-size: 0.95rem;
    color: var(--primary-dark);
}

.z1bc6fcertificate-card p {
    margin: 0;
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* —— 产品对比条 —— */
.z1bc6fcompare-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--gap-grid);
    align-items: stretch;
}

.z1bc6fcompare-card {
    padding: var(--space-card);
    background: var(--surface);
    border-radius: var(--radius);
    border-left: 3px solid var(--primary);
    height: 100%;
}

.z1bc6fcompare-card:nth-child(2) { border-left-color: var(--accent); }
.z1bc6fcompare-card:nth-child(3) { border-left-color: var(--accent-warm); }

.z1bc6fcompare-card h3 {
    margin: 0 0 0.65rem;
    font-size: 1.05rem;
    color: var(--primary-dark);
}

.z1bc6fcompare-card p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.65;
}

/* —— FAQ —— */
.z1bc6ffaq-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--gap-grid);
    max-width: 920px;
    margin: 0 auto;
}

.z1bc6ffaq-item {
    background: var(--surface);
    border-radius: var(--radius);
    padding: var(--space-card);
    height: 100%;
}

.z1bc6ffaq-item h3 {
    margin: 0 0 0.5rem;
    font-size: 1rem;
    color: var(--primary-dark);
}

.z1bc6ffaq-item p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* —— 文章 —— */
.z1bc6farticles-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.z1bc6farticles-header h2 {
    margin: 0;
    font-size: 1.65rem;
    color: var(--primary-dark);
}

.z1bc6farticles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--gap-grid);
}

.z1bc6farticle-card {
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: box-shadow var(--transition);
}

.z1bc6farticle-card:hover { box-shadow: var(--shadow-lg); }

.z1bc6fthumb-home {
    width: 100%;
    height: 110px;
    object-fit: cover;
    flex-shrink: 0;
}

.z1bc6farticle-card-body {
    padding: 0.75rem 0.9rem 0.9rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.z1bc6farticle-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.z1bc6farticle-card h3 {
    margin: 0;
    font-size: 0.88rem;
    font-weight: 600;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: break-word;
}

.z1bc6farticle-card h3 a {
    color: var(--text);
}

.z1bc6farticle-card h3 a:hover { color: var(--primary); }

/* —— 页脚 —— */
.z1bc6ffooter {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, 0.85);
    padding: 3.5rem 0 1.5rem;
}

.z1bc6ffooter-grid {
    display: grid;
    grid-template-columns: 1.4fr repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.z1bc6ffooter p { font-size: 0.9rem; line-height: 1.65; opacity: 0.85; }

.z1bc6ffooter-title {
    margin: 0 0 1rem;
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
}

.z1bc6ffooter-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.z1bc6ffooter-links li { margin-bottom: 0.5rem; }

.z1bc6ffooter-link {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.88rem;
}

.z1bc6ffooter-link:hover { color: var(--accent); }

.z1bc6ffriend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.z1bc6ffriend-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
}

.z1bc6ffriend-links a:hover { color: #fff; }

.z1bc6ffooter-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding-top: 1.25rem;
    text-align: center;
    font-size: 0.85rem;
}

.z1bc6ffooter-bottom a { color: rgba(255, 255, 255, 0.8); }
.z1bc6ffooter-bottom a:hover { color: var(--accent); }

.z1bc6ffooter-bottom p { margin: 0.35rem 0; }

/* —— 内页 / 列表页 —— */
.z1bc6fpage-main {
    padding: 2.5rem 0 4rem;
}

.z1bc6fpage-header {
    margin-bottom: 2rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border);
}

.z1bc6fpage-header h1 {
    margin: 0 0 0.5rem;
    font-size: 1.65rem;
    color: var(--primary-dark);
}

.z1bc6fpage-header .lead {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.z1bc6flayout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 2rem;
    align-items: start;
}

.z1bc6flayout > aside .z1bc6fcard + .z1bc6fcard {
    margin-top: 1rem;
}

.z1bc6flayout > aside .z1bc6fcard:first-child {
    margin-bottom: 0;
}

.z1bc6flayout > div:first-child > .z1bc6fcard + .z1bc6fcard {
    margin-top: 1.25rem;
}

.z1bc6frelated-item > div > a:first-of-type {
    font-weight: 600;
    display: inline-block;
    margin-bottom: 0.25rem;
}

.z1bc6fcard {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.z1bc6fcard-body { padding: var(--space-card); }

.z1bc6fcard .pagebar {
    padding: 0 var(--space-card) var(--space-card);
}

.z1bc6flist-item {
    padding-bottom: 1.25rem;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--border);
}

.z1bc6flist-item:last-child {
    padding-bottom: 0;
    margin-bottom: 0;
    border-bottom: none;
}

.z1bc6flist-row {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 1rem;
    align-items: start;
}

.z1bc6fthumb-list,
.z1bc6fthumb-related {
    width: 100%;
    height: 84px;
    object-fit: cover;
    border-radius: 8px;
}

.z1bc6flist-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

.z1bc6flist-title {
    margin: 0 0 0.4rem;
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.35;
}

.z1bc6flist-title a { color: var(--text); }
.z1bc6flist-title a:hover { color: var(--primary); }

.z1bc6flist-desc {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.55;
}

.z1bc6fsidebar-title {
    margin: 0 0 1rem;
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.z1bc6fsidebar-list,
.z1bc6fcontent-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.z1bc6fsidebar-list li {
    margin-bottom: 0.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.z1bc6fsidebar-list li:last-child { border-bottom: none; }

.z1bc6fcontent-list > li {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.z1bc6farticle-title {
    margin: 0 0 1rem;
    font-size: clamp(1.2rem, 4.5vw, 1.5rem);
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1.35;
    word-break: break-word;
}

.z1bc6fsidebar-hot {
    display: flex;
    gap: 0.65rem;
    margin-bottom: 0.85rem;
    align-items: flex-start;
}

.z1bc6fthumb-side {
    width: 72px;
    height: 54px;
    object-fit: cover;
    border-radius: 6px;
    flex-shrink: 0;
}

.z1bc6farticle-content {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text);
    overflow-wrap: break-word;
    word-break: break-word;
}

.z1bc6farticle-content img { max-width: 100%; height: auto; margin: 1rem 0; }

.z1bc6farticle-content table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.z1bc6fsidebar-hot a:last-child {
    flex: 1;
    min-width: 0;
    word-break: break-word;
    line-height: 1.45;
    font-size: 0.9rem;
}

.z1bc6farticle-meta-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
}

.z1bc6fthumb-cover {
    max-width: 100%;
    width: 100%;
    max-height: 320px;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
}

.z1bc6fmeta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
    margin: 1.5rem 0 0;
    padding: 0;
}

.z1bc6ftagitem a {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    font-size: 0.8rem;
    background: var(--bg);
    border-radius: 999px;
    color: var(--primary);
}

.z1bc6fprenext {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.z1bc6frelated-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.z1bc6frelated-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.pagebar .pagelist,
.zzpages .pagelist {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    list-style: none;
    padding: 0;
    margin: 1.5rem 0 0;
}

.pagebar .pagelist a,
.zzpages .pagelist a {
    display: inline-block;
    padding: 0.4rem 0.85rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.88rem;
    color: var(--text);
    background: var(--surface);
}

.pagebar .pagelist a:hover,
.zzpages .pagelist a:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* —— 响应式 —— */
@media (max-width: 1100px) {
    .z1bc6ffeatures-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .z1bc6fsecurity-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 1024px) {
    .z1bc6farticles-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }

    .z1bc6ffooter-grid { grid-template-columns: repeat(2, 1fr); }

    .z1bc6flayout {
        grid-template-columns: minmax(0, 1fr) 280px;
        gap: 1.5rem;
    }
}

@media (max-width: 900px) {
    .z1bc6fnavbar-toggler {
        display: flex;
        flex-shrink: 0;
    }

    .z1bc6fnavbar .z1bc6fcontainer {
        position: static;
    }

    .z1bc6fnavbar-brand img {
        height: 36px;
    }

    .z1bc6fnav-collapse {
        position: fixed;
        top: var(--nav-h);
        left: 0;
        right: 0;
        width: 100%;
        z-index: 999;
        display: none;
        flex-direction: column;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        padding: 0.75rem 1rem 1rem;
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
        max-height: calc(100dvh - var(--nav-h));
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .z1bc6fnav-collapse.is-open { display: flex; }

    .z1bc6fnavbar-nav {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }

    .z1bc6fnav-link {
        padding: 0.75rem 0.65rem;
        min-height: 44px;
        display: flex;
        align-items: center;
        font-size: 0.95rem;
    }

    .z1bc6fhero-grid,
    .z1bc6fregister-panel,
    .z1bc6flayout { grid-template-columns: 1fr; }

    .z1bc6ffeatures-grid,
    .z1bc6fcompare-grid,
    .z1bc6fsecurity-grid { grid-template-columns: 1fr; }

    .z1bc6fstats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

    .z1bc6fdownload-grid,
    .z1bc6ffaq-grid { grid-template-columns: minmax(0, 1fr); }

    .z1bc6farticles-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .z1bc6fcert-grid { grid-template-columns: 1fr; }

    .z1bc6fhero-visual { order: -1; }

    .z1bc6fhero-content {
        text-align: center;
    }

    .z1bc6fhero-subtitle {
        max-width: none;
        margin-left: auto;
        margin-right: auto;
    }

    .z1bc6fhero-buttons {
        justify-content: center;
    }

    .z1bc6fhero-float { display: none; }

    .z1bc6fhero-image { max-width: 200px; }

    .z1bc6fhero-title {
        font-size: clamp(1.6rem, 6vw, 2.25rem);
    }

    .z1bc6fsection-header { margin-bottom: 1.5rem; }

    .z1bc6farticles-header {
        flex-direction: column;
        align-items: stretch;
    }

    .z1bc6farticles-header .z1bc6fbtn {
        width: 100%;
    }

    .z1bc6fpage-main {
        padding: 1.75rem 0 3rem;
    }

    .z1bc6flayout > aside {
        order: 2;
    }
}

@media (max-width: 768px) {
    .z1bc6ffeatures-grid {
        grid-template-columns: 1fr;
    }

    .z1bc6farticles-grid {
        grid-template-columns: 1fr;
    }

    .z1bc6fthumb-home {
        height: 140px;
    }

    .z1bc6ffooter-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: center;
    }

    .z1bc6ffriend-links {
        justify-content: center;
    }
}

@media (max-width: 600px) {
    :root {
        --space-section: 2.5rem;
        --space-card: 1rem;
        --gap-grid: 0.85rem;
        --nav-h: 60px;
    }

    .z1bc6fcontainer {
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
    }

    .z1bc6fsection { padding: var(--space-section) 0; }

    .z1bc6fsection-header h2 {
        font-size: 1.35rem;
    }

    .z1bc6fsection-header p {
        font-size: 0.92rem;
    }

    .z1bc6fstats-section { padding: 1.75rem 0; }

    .z1bc6fstat-number {
        font-size: 1.5rem;
    }

    .z1bc6fstat-label {
        font-size: 0.82rem;
    }

    .z1bc6fstats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.65rem;
    }

    .z1bc6ftrust-list {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.85rem;
    }

    .z1bc6fregister-panel {
        padding: var(--space-card);
    }

    .z1bc6fsteps li {
        padding-left: 2.5rem;
        font-size: 0.88rem;
    }

    .z1bc6fsteps li::before {
        width: 1.75rem;
        height: 1.75rem;
        font-size: 0.8rem;
    }

    .z1bc6fhero-section { padding: 2rem 0 2.25rem; }

    .z1bc6fhero-badge {
        font-size: 0.75rem;
        max-width: 100%;
        justify-content: center;
        text-align: center;
    }

    .z1bc6fhero-subtitle {
        font-size: 0.92rem;
        line-height: 1.65;
    }

    .z1bc6fhero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .z1bc6fhero-buttons .z1bc6fbtn {
        width: 100%;
    }

    .z1bc6fdownload-card-head {
        flex-wrap: nowrap;
        gap: 0.75rem;
    }

    .z1bc6fdownload-card-head > div:last-child {
        min-width: 0;
        flex: 1;
    }

    .z1bc6fplatform-icon {
        width: 44px;
        height: 44px;
        font-size: 1.1rem;
    }

    .z1bc6flist-row {
        grid-template-columns: 96px 1fr;
        gap: 0.75rem;
    }

    .z1bc6fthumb-list,
    .z1bc6fthumb-related {
        height: 72px;
    }

    .z1bc6flist-title {
        font-size: 0.95rem;
    }

    .z1bc6flist-desc {
        font-size: 0.85rem;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .z1bc6frelated-item {
        grid-template-columns: 88px 1fr;
        gap: 0.75rem;
    }

    .z1bc6fpage-header h1 {
        font-size: 1.35rem;
    }

    .z1bc6fpage-header .lead {
        font-size: 0.88rem;
    }

    .z1bc6farticle-meta-bar {
        flex-direction: column;
        gap: 0.35rem;
    }

    .z1bc6fthumb-cover {
        max-height: 200px;
    }

    .z1bc6farticle-content {
        font-size: 0.95rem;
        line-height: 1.75;
    }

    .z1bc6fcard .pagebar {
        padding: 0.75rem var(--space-card) var(--space-card);
        border-top: 1px solid var(--border);
    }

    .pagebar .pagelist,
    .zzpages .pagelist {
        justify-content: center;
        margin-top: 0.75rem;
    }

    .pagebar .pagelist a,
    .zzpages .pagelist a {
        min-width: 36px;
        text-align: center;
        padding: 0.45rem 0.65rem;
        font-size: 0.82rem;
    }

    .z1bc6flayout { gap: 1rem; }

    .z1bc6ffooter {
        padding-bottom: max(1.25rem, env(safe-area-inset-bottom));
    }

    .z1bc6fbtn {
        padding: 0.7rem 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 380px) {
    .z1bc6flist-row {
        grid-template-columns: 1fr;
    }

    .z1bc6flist-row > a {
        display: block;
    }

    .z1bc6fthumb-list {
        width: 100%;
        height: 140px;
    }

    .z1bc6frelated-item {
        grid-template-columns: 1fr;
    }

    .z1bc6fthumb-related {
        width: 100%;
        height: 120px;
    }

    .z1bc6fstat-number {
        font-size: 1.35rem;
    }
}