/* Ledger 官网主题 — 墨绿 + 琥珀强调色 */
:root {
    --ldg-primary: #0d3d38;
    --ldg-primary-light: #145c54;
    --ldg-accent: #e8a838;
    --ldg-accent-hover: #f0bc5c;
    --ldg-surface: #f4f7f6;
    --ldg-card: #ffffff;
    --ldg-text: #1c2b28;
    --ldg-muted: #5a6f6a;
    --ldg-border: rgba(13, 61, 56, 0.12);
    --ldg-radius: 12px;
    --ldg-radius-lg: 18px;
    --ldg-shadow: 0 8px 24px rgba(13, 61, 56, 0.08);
    --ldg-transition: 0.25s ease;
    --primary-color: var(--ldg-primary-light);
    --secondary-color: var(--ldg-primary);
    --accent-color: var(--ldg-accent);
    --text-color: var(--ldg-text);
    --light-bg: var(--ldg-surface);
}

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

body,
.ldg-body {
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    color: var(--ldg-text);
    line-height: 1.65;
    background: var(--ldg-surface);
    overflow-x: hidden;
}

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

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

/* —— 导航 —— */
.ldg-nav.z1bc91navbar,
.z1bc91navbar.ldg-nav {
    background: var(--ldg-primary) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    padding: 0.65rem 0;
}

.ldg-nav .z1bc91nav-link,
.ldg-nav .nav-link {
    color: rgba(255, 255, 255, 0.88) !important;
    font-weight: 500;
    padding: 0.45rem 0.85rem !important;
    border-radius: 8px;
    transition: background var(--ldg-transition), color var(--ldg-transition);
}

.ldg-nav .z1bc91nav-link:hover,
.ldg-nav .nav-link:hover,
.ldg-nav .z1bc91nav-link.active {
    color: #fff !important;
    background: rgba(255, 255, 255, 0.1);
}

.ldg-nav .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.35);
    padding: 0.4rem 0.55rem;
}

.ldg-nav .navbar-collapse {
    background: var(--ldg-primary);
    border-radius: var(--ldg-radius);
}

@media (min-width: 992px) {
    .ldg-nav .navbar-collapse {
        background: transparent;
        box-shadow: none;
        padding: 0;
    }
}

/* —— 按钮 —— */
.ldg-btn-primary {
    background: var(--ldg-accent);
    border: none;
    color: var(--ldg-primary);
    font-weight: 600;
    border-radius: 10px;
    padding: 0.65rem 1.25rem;
    transition: background var(--ldg-transition), transform var(--ldg-transition);
}

.ldg-btn-primary:hover {
    background: var(--ldg-accent-hover);
    color: var(--ldg-primary);
    transform: translateY(-1px);
}

.ldg-btn-outline {
    background: transparent;
    border: 2px solid var(--ldg-accent);
    color: var(--ldg-accent);
    font-weight: 600;
    border-radius: 10px;
}

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

.ldg-btn-ghost {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: #fff;
    font-weight: 600;
    border-radius: 10px;
}

.ldg-btn-ghost:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

.btn.z1bc91btn {
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
}

/* —— Hero —— */
.ldg-hero.z1bc91hero-section {
    position: relative;
    padding: 4.5rem 0 4rem;
    color: #fff;
    overflow: hidden;
    background: var(--ldg-primary);
}

.ldg-hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 100% 0%, rgba(232, 168, 56, 0.18), transparent),
        linear-gradient(160deg, var(--ldg-primary) 0%, #082824 100%);
    pointer-events: none;
}

.z1bc91hero-title,
.hero-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 1rem;
}

.z1bc91hero-subtitle,
.hero-subtitle {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    opacity: 0.92;
    margin-bottom: 0;
    max-width: 36em;
}

.ldg-badge {
    display: inline-block;
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    background: rgba(232, 168, 56, 0.2);
    color: var(--ldg-accent);
    margin-bottom: 1rem;
    border: 1px solid rgba(232, 168, 56, 0.35);
}

.ldg-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.75rem;
}

.ldg-hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    min-height: 220px;
}

.ldg-hero-visual .z1bc91hero-image {
    max-width: min(100%, 320px);
    border-radius: var(--ldg-radius-lg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    border: 3px solid rgba(255, 255, 255, 0.15);
}

.z1bc91hero-image-shadow {
    display: none;
}

/* —— 通用区块 —— */
.ldg-section {
    padding: 4rem 0;
}

.ldg-section-head {
    max-width: 640px;
    margin: 0 auto 2.5rem;
}

.ldg-section-head h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--ldg-primary);
    margin-bottom: 0.75rem;
}

.ldg-section-head p {
    color: var(--ldg-muted);
    margin: 0;
    font-size: 1.02rem;
}

/* —— 特点面板 —— */
.ldg-features {
    background: var(--ldg-card);
}

.ldg-panel {
    height: 100%;
    padding: 1.5rem;
    border-radius: var(--ldg-radius-lg);
    border: 1px solid var(--ldg-border);
    background: var(--ldg-card);
    box-shadow: var(--ldg-shadow);
    transition: transform var(--ldg-transition), box-shadow var(--ldg-transition);
}

.ldg-panel:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(13, 61, 56, 0.12);
}

.ldg-panel-accent {
    border-color: rgba(232, 168, 56, 0.45);
    background: linear-gradient(180deg, #fffdf8 0%, #fff 100%);
}

.ldg-panel-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: rgba(13, 61, 56, 0.08);
    color: var(--ldg-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    margin-bottom: 1rem;
}

.ldg-panel h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--ldg-primary);
}

.ldg-panel p {
    font-size: 0.95rem;
    color: var(--ldg-muted);
    margin: 0;
}

.ldg-intro-card {
    padding: 1.5rem 1.75rem;
    border-radius: var(--ldg-radius-lg);
    border: 1px solid var(--ldg-border);
    background: var(--ldg-surface);
    height: 100%;
}

.ldg-intro-card h3 {
    font-size: 1.2rem;
    color: var(--ldg-primary);
    margin-bottom: 1rem;
}

.ldg-intro-card p {
    color: var(--ldg-muted);
    font-size: 0.95rem;
    margin-bottom: 0.85rem;
}

.ldg-intro-card p:last-child {
    margin-bottom: 0;
}

.ldg-checklist {
    list-style: none;
    padding: 1.25rem 1.5rem;
    margin: 0;
    height: 100%;
    border-radius: var(--ldg-radius-lg);
    border: 1px solid var(--ldg-border);
    background: var(--ldg-card);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.85rem;
}

.ldg-checklist li {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    font-size: 0.95rem;
    color: var(--ldg-text);
}

.ldg-checklist i {
    color: var(--ldg-accent);
    font-size: 1.15rem;
    flex-shrink: 0;
    margin-top: 0.1rem;
}

/* —— 统计 —— */
.ldg-stats.z1bc91stats-section {
    padding: 3rem 0;
    background: linear-gradient(90deg, var(--ldg-primary-light), var(--ldg-primary));
    color: #fff;
}

.ldg-stat {
    padding: 1rem 0.5rem;
    border-radius: var(--ldg-radius);
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.06);
    height: 100%;
}

.z1bc91stat-number,
.stat-number {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 700;
    line-height: 1.2;
}

.z1bc91stat-label,
.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* —— 下载 —— */
.ldg-download.z1bc91download-section {
    background: var(--ldg-surface);
    padding: 4rem 0;
}

.ldg-dl-card {
    padding: 1.5rem;
    border-radius: var(--ldg-radius-lg);
    border: 1px solid var(--ldg-border);
    background: var(--ldg-card);
    box-shadow: var(--ldg-shadow);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

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

.ldg-dl-head h3 {
    font-size: 1.1rem;
    margin: 0 0 0.15rem;
    color: var(--ldg-primary);
}

.ldg-dl-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #fff;
    flex-shrink: 0;
}

.ldg-dl-win {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.ldg-dl-android {
    background: linear-gradient(135deg, #22c55e, #15803d);
}

.ldg-dl-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.25rem;
    flex-grow: 1;
}

.ldg-dl-list li {
    position: relative;
    padding-left: 1.1rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--ldg-muted);
}

.ldg-dl-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--ldg-accent);
}

/* —— 安全 —— */
.ldg-security.z1bc91security-section {
    background: var(--ldg-card);
    padding: 4rem 0;
}

.ldg-sec-card {
    height: 100%;
    padding: 1.35rem;
    text-align: center;
    border-radius: var(--ldg-radius);
    border: 1px solid var(--ldg-border);
    background: var(--ldg-surface);
    transition: border-color var(--ldg-transition);
}

.ldg-sec-card:hover {
    border-color: rgba(232, 168, 56, 0.5);
}

.ldg-sec-card i {
    font-size: 1.75rem;
    color: var(--ldg-primary-light);
    margin-bottom: 0.75rem;
    display: block;
}

.ldg-sec-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ldg-primary);
    margin-bottom: 0.5rem;
}

.ldg-sec-card p {
    font-size: 0.88rem;
    color: var(--ldg-muted);
    margin: 0;
    line-height: 1.5;
}

.ldg-cert {
    padding: 1.25rem;
    text-align: center;
    border-radius: var(--ldg-radius);
    border: 1px solid var(--ldg-border);
    background: var(--ldg-card);
    height: 100%;
    box-shadow: none;
}

.ldg-cert h4 {
    font-size: 1rem;
    color: var(--ldg-primary);
    margin-bottom: 0.5rem;
}

.ldg-cert p {
    font-size: 0.88rem;
    color: var(--ldg-muted);
    margin: 0;
}

/* —— FAQ —— */
.ldg-faq {
    background: var(--ldg-surface);
}

.ldg-faq-item {
    border: 1px solid var(--ldg-border) !important;
    border-radius: var(--ldg-radius) !important;
    box-shadow: none !important;
    overflow: hidden;
}

.ldg-faq-item .card-body {
    padding: 1.25rem 1.35rem;
}

.ldg-faq-item h5 {
    font-size: 1rem;
    color: var(--ldg-primary);
    margin-bottom: 0.5rem;
}

.ldg-faq-item p {
    font-size: 0.9rem;
    color: var(--ldg-muted);
    margin: 0;
}

/* —— 文章卡片 —— */
.ldg-articles {
    background: var(--ldg-card);
}

.ldg-article-card {
    border: 1px solid var(--ldg-border) !important;
    border-radius: var(--ldg-radius) !important;
    box-shadow: none !important;
    overflow: hidden;
    transition: box-shadow var(--ldg-transition);
}

.ldg-article-card:hover {
    box-shadow: var(--ldg-shadow) !important;
}

.z1bc91thumb-home {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

.ldg-article-card .card-body {
    padding: 0.85rem 1rem;
}

.ldg-article-card h3,
.ldg-article-card .h6 {
    font-size: 0.92rem;
    line-height: 1.4;
    margin: 0;
}

/* —— 页脚 —— */
.ldg-footer.z1bc91footer {
    background: var(--ldg-primary);
    color: rgba(255, 255, 255, 0.85);
    padding: 3rem 0 1.5rem;
}

.ldg-footer .z1bc91footer-title,
.ldg-footer .footer-title {
    color: var(--ldg-accent);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.ldg-footer .z1bc91footer-link,
.ldg-footer .footer-link,
.ldg-footer a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
}

.ldg-footer .z1bc91footer-link:hover,
.ldg-footer a:hover {
    color: #fff;
}

.ldg-footer .z1bc91footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: 1.25rem;
    color: rgba(255, 255, 255, 0.65);
}

.z1bc91friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

/* —— 列表 / 内页 —— */
.ldg-page-main .card {
    border: 1px solid var(--ldg-border);
    border-radius: var(--ldg-radius-lg);
    overflow: hidden;
}

.ldg-page-main .card-body {
    padding: 1.25rem 1.5rem;
}

.z1bc91article-content {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.z1bc91article-content img {
    max-width: 100%;
    height: auto;
}

.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;
}

/* 兼容旧类名 */
.z1bc91feature-card {
    border: 1px solid var(--ldg-border);
    border-radius: var(--ldg-radius-lg);
    height: 100%;
}

.z1bc91download-card,
.z1bc91security-card,
.z1bc91certificate-card {
    overflow: hidden;
}

/* —— 响应式 —— */
@media (max-width: 991px) {
    .ldg-hero {
        padding: 3.5rem 0 3rem;
        text-align: center;
    }

    .ldg-hero-subtitle,
    .z1bc91hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .ldg-hero-actions {
        justify-content: center;
    }

    .ldg-hero-visual {
        margin-top: 0.5rem;
    }

    .ldg-nav .navbar-collapse {
        margin-top: 0.5rem;
        padding: 0.75rem;
        max-height: 70vh;
        overflow-y: auto;
    }
}

@media (max-width: 767px) {
    .ldg-section {
        padding: 3rem 0;
    }

    .ldg-hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .ldg-hero-actions .btn {
        width: 100%;
    }

    .ldg-section-head {
        margin-bottom: 1.75rem;
    }

    .ldg-dl-head {
        flex-wrap: wrap;
    }

    .ldg-footer .row > [class*="col-"] {
        text-align: center;
    }

    .z1bc91navbar {
        padding: 0.5rem 0;
    }

    .z1bc91navbar .navbar-nav .nav-link {
        padding: 0.5rem 0.35rem !important;
        font-size: 0.95rem;
    }

    #article .z1bc91thumb-home {
        height: 100px !important;
    }

    #article .card-body {
        padding: 0.75rem;
    }

    #article h3.h5,
    #article .h6 {
        font-size: 0.9rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .listbox .e2 li {
        padding-bottom: 0.75rem !important;
        margin-bottom: 0.75rem !important;
    }

    .listbox .e2 li h2.h5 {
        font-size: 1rem;
        line-height: 1.35;
    }

    .z1bc91thumb-list,
    .z1bc91thumb-related {
        height: 72px !important;
    }

    .z1bc91thumb-side {
        height: 50px !important;
    }

    .z1bc91thumb-cover {
        max-width: 100% !important;
        width: 100%;
        height: auto !important;
        max-height: 220px;
        object-fit: cover;
    }

    .ldg-page-main aside {
        margin-top: 1rem;
    }
}

@media (max-width: 575px) {
    .ldg-stat {
        padding: 0.75rem 0.35rem;
    }

    .z1bc91stat-number {
        font-size: 1.35rem;
    }

    .z1bc91stat-label {
        font-size: 0.8rem;
    }

    #article .row-cols-sm-2 > .col {
        flex: 0 0 100%;
        max-width: 100%;
    }

    .pagebar .pagelist {
        gap: 0.35rem;
    }
}