/* 优途加速器官网 - 全新主题 */
:root {
    --yt-primary: #1a6b5c;
    --yt-primary-dark: #0f3d35;
    --yt-primary-light: #2d8f7c;
    --yt-accent: #f2845c;
    --yt-accent-hover: #e06d44;
    --yt-bg: #f4f7f6;
    --yt-surface: #ffffff;
    --yt-text: #1e2a28;
    --yt-text-muted: #5c6b68;
    --yt-border: #d4e0dd;
    --yt-radius: 12px;
    --yt-radius-lg: 20px;
    --yt-shadow: 0 4px 24px rgba(15, 61, 53, 0.08);
    --yt-shadow-hover: 0 8px 32px rgba(15, 61, 53, 0.12);
    --yt-nav-h: 72px;
    --yt-section-pad: clamp(3rem, 6vw, 5rem);
    --yt-transition: 0.25s ease;
}

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

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

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

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

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

a:hover {
    color: var(--yt-accent);
}

/* 导航 */
.z55e96navbar {
    background: var(--yt-surface);
    border-bottom: 1px solid var(--yt-border);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 1030;
}

.z55e96navbar-brand img {
    height: 42px;
    width: auto;
}

.z55e96nav-link {
    color: var(--yt-text) !important;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0.85rem !important;
    border-radius: 8px;
    transition: background var(--yt-transition), color var(--yt-transition);
}

.z55e96nav-link:hover {
    color: var(--yt-primary) !important;
    background: rgba(26, 107, 92, 0.08);
}

.z55e96navbar .navbar-toggler {
    border-color: var(--yt-border);
    padding: 0.4rem 0.55rem;
}

.z55e96navbar .navbar-toggler:focus {
    box-shadow: 0 0 0 0.2rem rgba(26, 107, 92, 0.25);
}

.z55e96navbar .navbar-collapse {
    background: var(--yt-surface);
}

@media (min-width: 992px) {
    .z55e96navbar .navbar-collapse {
        background: transparent;
    }
}

/* 英雄区 */
.z55e96hero-section {
    background: linear-gradient(145deg, var(--yt-primary-dark) 0%, var(--yt-primary) 55%, var(--yt-primary-light) 100%);
    color: #fff;
    padding: var(--yt-section-pad) 0;
    position: relative;
    overflow: hidden;
}

.z55e96hero-section::after {
    content: "";
    position: absolute;
    right: -10%;
    top: -20%;
    width: 50%;
    height: 140%;
    background: radial-gradient(ellipse, rgba(242, 132, 92, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.z55e96hero-content {
    position: relative;
    z-index: 1;
}

.z55e96hero-badge {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    margin-bottom: 1.25rem;
}

.z55e96hero-title {
    font-size: clamp(1.85rem, 4.5vw, 2.75rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.z55e96hero-subtitle {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    opacity: 0.92;
    margin-bottom: 1.5rem;
    max-width: 36em;
}

.z55e96hero-note {
    font-size: 0.85rem;
    opacity: 0.8;
    margin-top: 1rem;
    margin-bottom: 0;
}

.z55e96hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.z55e96hero-visual {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.z55e96hero-image {
    max-width: 280px;
    width: 100%;
    border-radius: var(--yt-radius-lg);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

/* 按钮 */
.z55e96btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.7rem 1.35rem;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 10px;
    border: 2px solid transparent;
    transition: transform var(--yt-transition), box-shadow var(--yt-transition), background var(--yt-transition);
    white-space: normal;
    text-align: center;
    line-height: 1.3;
}

.z55e96btn-accent {
    background: var(--yt-accent);
    color: #fff !important;
    border-color: var(--yt-accent);
}

.z55e96btn-accent:hover {
    background: var(--yt-accent-hover);
    border-color: var(--yt-accent-hover);
    color: #fff !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(242, 132, 92, 0.35);
}

.z55e96btn-outline {
    background: transparent;
    color: #fff !important;
    border-color: rgba(255, 255, 255, 0.6);
}

.z55e96btn-outline:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff !important;
    border-color: #fff;
    transform: translateY(-2px);
}

.z55e96btn-primary {
    background: var(--yt-primary);
    color: #fff !important;
    border-color: var(--yt-primary);
}

.z55e96btn-primary:hover {
    background: var(--yt-primary-dark);
    border-color: var(--yt-primary-dark);
    color: #fff !important;
    transform: translateY(-2px);
    box-shadow: var(--yt-shadow-hover);
}

.z55e96btn-outline-sm {
    background: transparent;
    color: var(--yt-primary) !important;
    border: 1px solid var(--yt-primary);
    padding: 0.45rem 1rem;
    font-size: 0.875rem;
}

.z55e96btn-outline-sm:hover {
    background: var(--yt-primary);
    color: #fff !important;
}

/* 简介条 */
.z55e96intro-strip {
    background: var(--yt-surface);
    border-bottom: 1px solid var(--yt-border);
    padding: 1.5rem 0;
}

.z55e96intro-strip p {
    margin: 0;
    font-size: 0.98rem;
    color: var(--yt-text-muted);
    text-align: center;
    max-width: 52em;
    margin-left: auto;
    margin-right: auto;
}

.z55e96intro-strip strong {
    color: var(--yt-primary);
}

/* 通用区块 */
.z55e96section {
    padding: var(--yt-section-pad) 0;
}

.z55e96section-head {
    text-align: center;
    max-width: 40rem;
    margin: 0 auto 2.5rem;
}

.z55e96section-head h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--yt-primary-dark);
    margin-bottom: 0.65rem;
}

.z55e96section-head p {
    color: var(--yt-text-muted);
    margin: 0;
    font-size: 0.98rem;
}

.z55e96section-head-light h2,
.z55e96section-head-light p {
    color: inherit;
}

/* 特点卡片 */
.z55e96features-section {
    background: var(--yt-bg);
}

.z55e96feature-card {
    background: var(--yt-surface);
    border: 1px solid var(--yt-border);
    border-radius: var(--yt-radius);
    padding: 1.75rem 1.5rem;
    height: 100%;
    text-align: center;
    transition: box-shadow var(--yt-transition), border-color var(--yt-transition);
    overflow: hidden;
}

.z55e96feature-card:hover {
    box-shadow: var(--yt-shadow-hover);
    border-color: var(--yt-primary-light);
}

.z55e96feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--yt-primary);
    background: rgba(26, 107, 92, 0.1);
    border-radius: 14px;
}

.z55e96feature-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.65rem;
    color: var(--yt-primary-dark);
}

.z55e96feature-card p {
    font-size: 0.92rem;
    color: var(--yt-text-muted);
    margin: 0;
    line-height: 1.6;
}

/* 统计 */
.z55e96stats-section {
    background: var(--yt-primary-dark);
    color: #fff;
    padding: 2.5rem 0;
}

.z55e96stat-item {
    text-align: center;
    padding: 0.75rem 0.5rem;
}

.z55e96stat-number {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--yt-accent);
}

.z55e96stat-label {
    font-size: 0.9rem;
    opacity: 0.88;
    margin-top: 0.25rem;
}

/* 下载区 */
.z55e96download-section {
    background: var(--yt-surface);
}

.z55e96download-card {
    background: var(--yt-bg);
    border: 1px solid var(--yt-border);
    border-radius: var(--yt-radius-lg);
    padding: 1.5rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: box-shadow var(--yt-transition);
}

.z55e96download-card:hover {
    box-shadow: var(--yt-shadow);
}

.z55e96download-card-head {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.z55e96download-card-head h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 0 0 0.2rem;
    color: var(--yt-primary-dark);
}

.z55e96download-card-head p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--yt-text-muted);
}

.z55e96platform-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #fff;
}

.z55e96android-icon {
    background: linear-gradient(135deg, #3ddc84, #2a9d5c);
}

.z55e96pc-icon {
    background: linear-gradient(135deg, #4a9eff, #2563eb);
}

.z55e96download-info {
    list-style: none;
    padding: 0;
    margin: 0 0 1.25rem;
    flex-grow: 1;
}

.z55e96download-info li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--yt-text-muted);
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--yt-border);
}

.z55e96download-info li:last-child {
    border-bottom: none;
}

.z55e96download-info i {
    color: var(--yt-primary);
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.z55e96download-action {
    margin-top: auto;
}

.z55e96download-action .z55e96btn {
    width: 100%;
}

/* 知识区 */
.z55e96knowledge-section {
    background: linear-gradient(180deg, var(--yt-bg) 0%, #e8efed 100%);
}

.z55e96knowledge-title {
    font-size: clamp(1.35rem, 3vw, 1.75rem);
    font-weight: 700;
    color: var(--yt-primary-dark);
    margin-bottom: 0.75rem;
}

.z55e96knowledge-lead {
    color: var(--yt-text-muted);
    margin: 0;
    font-size: 0.95rem;
}

.z55e96knowledge-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.z55e96knowledge-list li {
    position: relative;
    padding: 0.85rem 0 0.85rem 1.25rem;
    border-bottom: 1px solid var(--yt-border);
    font-size: 0.92rem;
    color: var(--yt-text-muted);
    line-height: 1.6;
}

.z55e96knowledge-list li:last-child {
    border-bottom: none;
}

.z55e96knowledge-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 1.15rem;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--yt-accent);
}

.z55e96knowledge-list strong {
    color: var(--yt-text);
}

/* 安全 */
.z55e96security-section {
    background: var(--yt-primary-dark);
    color: #fff;
}

.z55e96security-section .z55e96section-head-light p {
    opacity: 0.85;
}

.z55e96security-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--yt-radius);
    padding: 1.35rem 1rem;
    height: 100%;
    text-align: center;
    transition: background var(--yt-transition);
    overflow: hidden;
}

.z55e96security-card:hover {
    background: rgba(255, 255, 255, 0.1);
}

.z55e96security-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--yt-accent);
    background: rgba(242, 132, 92, 0.15);
    border-radius: 12px;
}

.z55e96security-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.z55e96security-card p {
    font-size: 0.82rem;
    opacity: 0.85;
    margin: 0;
    line-height: 1.5;
}

/* FAQ */
.z55e96faq-section {
    background: var(--yt-bg);
}

.z55e96faq-card {
    background: var(--yt-surface);
    border: 1px solid var(--yt-border);
    border-radius: var(--yt-radius);
    padding: 1.35rem 1.25rem;
    height: 100%;
    overflow: hidden;
}

.z55e96faq-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--yt-primary-dark);
    margin-bottom: 0.5rem;
}

.z55e96faq-card p {
    font-size: 0.9rem;
    color: var(--yt-text-muted);
    margin: 0;
    line-height: 1.6;
}

/* 文章区 */
.z55e96article-section {
    background: var(--yt-surface);
    border-top: 1px solid var(--yt-border);
}

.z55e96article-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--yt-primary-dark);
}

.z55e96article-card {
    background: var(--yt-bg);
    border: 1px solid var(--yt-border);
    border-radius: var(--yt-radius);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: box-shadow var(--yt-transition);
}

.z55e96article-card:hover {
    box-shadow: var(--yt-shadow);
}

.z55e96article-thumb-link {
    display: block;
    overflow: hidden;
}

.z55e96thumb-home {
    width: 100%;
    height: 110px;
    object-fit: cover;
}

.z55e96article-card-body {
    padding: 0.85rem 1rem 1rem;
    flex-grow: 1;
}

.z55e96article-meta {
    font-size: 0.75rem;
    color: var(--yt-text-muted);
    margin-bottom: 0.4rem;
}

.z55e96article-card h3 {
    font-size: 0.9rem;
    font-weight: 600;
    margin: 0;
    line-height: 1.4;
}

.z55e96article-card h3 a {
    color: var(--yt-text);
}

.z55e96article-card h3 a:hover {
    color: var(--yt-primary);
}

/* 页脚 */
.z55e96footer {
    background: var(--yt-primary-dark);
    color: rgba(255, 255, 255, 0.85);
    padding: 3rem 0 1.5rem;
}

.z55e96footer-desc {
    font-size: 0.88rem;
    opacity: 0.8;
    margin-top: 1rem;
    line-height: 1.6;
}

.z55e96footer-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 1rem;
}

.z55e96footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.z55e96footer-links li {
    margin-bottom: 0.5rem;
}

.z55e96footer-link {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.88rem;
}

.z55e96footer-link:hover {
    color: var(--yt-accent);
}

.z55e96friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
}

.z55e96friend-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
}

.z55e96friend-links a:hover {
    color: var(--yt-accent);
}

.z55e96footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    margin-top: 2rem;
    padding-top: 1.25rem;
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.75;
}

.z55e96footer-bottom p {
    margin-bottom: 0.35rem;
}

.z55e96footer-bottom a {
    color: rgba(255, 255, 255, 0.85);
}

.z55e96footer-bottom a:hover {
    color: var(--yt-accent);
}

/* 列表页 / 内页 */
.yt-inner-page {
    padding-top: 1.5rem;
    padding-bottom: 3rem;
    min-height: 50vh;
}

.yt-inner-page .card {
    border: 1px solid var(--yt-border);
    border-radius: var(--yt-radius);
    overflow: hidden;
}

.yt-inner-page .card-body {
    padding: 1.25rem;
}

.yt-page-title {
    font-size: clamp(1.35rem, 3vw, 1.75rem);
    font-weight: 700;
    color: var(--yt-primary-dark);
    margin-bottom: 0.35rem;
}

.yt-page-desc {
    color: var(--yt-text-muted);
    font-size: 0.95rem;
    margin: 0;
}

.yt-sidebar-card .card-body h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--yt-primary-dark);
    margin-bottom: 0.85rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--yt-accent);
}

.yt-sidebar-card ul li a {
    color: var(--yt-text-muted);
    font-size: 0.9rem;
}

.yt-sidebar-card ul li a:hover {
    color: var(--yt-primary);
}

.z55e96article-content {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--yt-text);
    overflow-wrap: break-word;
}

.z55e96article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--yt-radius);
}

.z55e96thumb-cover {
    max-width: 100%;
    width: 100%;
    height: auto;
    max-height: 220px;
    object-fit: cover;
    border-radius: var(--yt-radius);
}

.z55e96thumb-list,
.z55e96thumb-related {
    width: 100%;
    height: 84px;
    object-fit: cover;
    border-radius: 8px;
}

.z55e96thumb-side {
    width: 100%;
    height: 54px;
    object-fit: cover;
    border-radius: 6px;
}

.listbox .e2 li {
    border-color: var(--yt-border) !important;
}

.listbox .e2 li h2.h5 a {
    color: var(--yt-text);
}

.listbox .e2 li h2.h5 a:hover {
    color: var(--yt-primary);
}

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

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

.z55e96meta-tags .z55e96tagitem a {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    background: rgba(26, 107, 92, 0.1);
    border-radius: 6px;
    font-size: 0.85rem;
}

/* 移动端 */
@media (max-width: 991px) {
    .z55e96navbar .navbar-collapse {
        margin-top: 0.75rem;
        padding: 0.75rem;
        border: 1px solid var(--yt-border);
        border-radius: var(--yt-radius);
        max-height: 70vh;
        overflow-y: auto;
    }

    .z55e96nav-link {
        padding: 0.55rem 0.5rem !important;
    }

    .z55e96hero-visual {
        margin-top: 0.5rem;
    }

    .z55e96hero-image {
        max-width: 220px;
    }

    .z55e96hero-buttons {
        flex-direction: column;
    }

    .z55e96hero-buttons .z55e96btn {
        width: 100%;
    }

    .z55e96download-card-head {
        flex-direction: column;
        text-align: center;
    }

    .z55e96footer .z55e96col-md-4,
    .z55e96footer .z55e96col-md-2 {
        text-align: center;
    }

    .z55e96footer-links {
        margin-bottom: 0.5rem;
    }

    .z55e96friend-links {
        justify-content: center;
    }
}

@media (max-width: 767px) {
    :root {
        --yt-nav-h: 64px;
    }

    .z55e96section-head {
        margin-bottom: 1.75rem;
    }

    .z55e96feature-card,
    .z55e96download-card,
    .z55e96faq-card,
    .z55e96security-card {
        padding: 1.15rem 1rem;
    }

    .z55e96security-card h3 {
        font-size: 0.92rem;
    }

    .z55e96security-card p {
        font-size: 0.78rem;
    }

    .z55e96knowledge-list li {
        padding-left: 1rem;
        font-size: 0.88rem;
    }

    .z55e96thumb-home {
        height: 96px;
    }

    .z55e96article-card h3 {
        font-size: 0.88rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .listbox .e2 li .row {
        --bs-gutter-x: 0.75rem;
    }

    .z55e96thumb-list,
    .z55e96thumb-related {
        height: 72px;
    }

    .z55e96thumb-side {
        height: 50px;
    }

    .z55e96thumb-cover {
        max-height: 170px;
    }

    .yt-inner-page .card-body {
        padding: 1rem;
    }

    .yt-sidebar-card {
        margin-top: 0 !important;
    }
}

@media (max-width: 575px) {
    .z55e96stat-number {
        font-size: 1.5rem;
    }

    .z55e96stat-label {
        font-size: 0.8rem;
    }

    .z55e96thumb-home {
        height: 88px;
    }

    .z55e96thumb-list,
    .z55e96thumb-related {
        height: 64px;
    }

    .pagebar .pagelist {
        gap: 0.35rem;
        font-size: 0.9rem;
    }
}

/* Bootstrap 覆盖，保持边框一致 */
.container {
    max-width: 1140px;
}

.card.shadow-sm {
    box-shadow: var(--yt-shadow) !important;
}