/* 旋风加速器官网 — 全新主题：深青 + 琥珀 */
:root {
    --xf-primary: #0b6e6e;
    --xf-primary-dark: #084f4f;
    --xf-accent: #e8a838;
    --xf-accent-soft: rgba(232, 168, 56, 0.15);
    --xf-bg: #f4f7f6;
    --xf-surface: #ffffff;
    --xf-text: #1e2d2d;
    --xf-muted: #5a6e6e;
    --xf-border: #d4e0de;
    --xf-radius: 12px;
    --xf-radius-lg: 20px;
    --xf-shadow: 0 4px 24px rgba(11, 110, 110, 0.08);
    --xf-shadow-hover: 0 12px 32px rgba(11, 110, 110, 0.12);
    --xf-nav-h: 68px;
    --xf-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(--xf-text);
    line-height: 1.65;
    background: var(--xf-bg);
    margin: 0;
    overflow-x: hidden;
}

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

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

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

/* —— 导航 —— */
.z61f29navbar {
    background: var(--xf-surface);
    border-bottom: 1px solid var(--xf-border);
    padding: 0.65rem 0;
    position: sticky;
    top: 0;
    z-index: 1030;
}

.z61f29navbar .navbar-brand img {
    height: 42px;
    width: auto;
}

.z61f29nav-link {
    color: var(--xf-text) !important;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.45rem 0.85rem !important;
    border-radius: 8px;
}

.z61f29nav-link:hover,
.z61f29nav-item.active .z61f29nav-link {
    color: var(--xf-primary) !important;
    background: var(--xf-accent-soft);
}

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

.navbar-toggler:focus {
    box-shadow: 0 0 0 2px var(--xf-accent-soft);
}

/* —— 按钮 —— */
.z61f29btn,
.z61f29btn.btn {
    border-radius: 999px;
    font-weight: 600;
    padding: 0.65rem 1.35rem;
    transition: transform var(--xf-transition), box-shadow var(--xf-transition);
}

.z61f29btn-primary,
.z61f29btn.btn-primary {
    background: linear-gradient(135deg, var(--xf-primary), var(--xf-primary-dark));
    border: none;
    color: #fff;
}

.z61f29btn-primary:hover,
.z61f29btn.btn-primary:hover {
    background: linear-gradient(135deg, var(--xf-primary-dark), var(--xf-primary));
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--xf-shadow-hover);
}

.z61f29btn-outline.btn-outline-light {
    border: 2px solid rgba(255, 255, 255, 0.85);
    color: #fff;
}

.z61f29btn-outline.btn-outline-light:hover {
    background: #fff;
    color: var(--xf-primary-dark);
}

.z61f29btn-ghost,
.z61f29btn.btn-outline-primary {
    border: 1px solid var(--xf-primary);
    color: var(--xf-primary);
    background: transparent;
}

.z61f29btn-ghost:hover,
.z61f29btn.btn-outline-primary:hover {
    background: var(--xf-primary);
    color: #fff;
}

/* —— Hero —— */
.z61f29hero {
    background: linear-gradient(145deg, var(--xf-primary-dark) 0%, var(--xf-primary) 55%, #0d8a7a 100%);
    color: #fff;
    padding: clamp(3rem, 8vw, 5.5rem) 0;
    position: relative;
    overflow: hidden;
}

.z61f29hero::after {
    content: "";
    position: absolute;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(232, 168, 56, 0.2) 0%, transparent 70%);
    top: -120px;
    right: -80px;
    pointer-events: none;
}

.z61f29hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.z61f29hero-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, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.25);
    margin-bottom: 1rem;
}

.z61f29hero-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 1rem;
}

.z61f29hero-lead {
    font-size: 1.05rem;
    opacity: 0.92;
    margin-bottom: 1.5rem;
    max-width: 36em;
}

.z61f29hero-lead strong {
    color: var(--xf-accent);
    font-weight: 600;
}

.z61f29hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.z61f29hero-note {
    font-size: 0.88rem;
    opacity: 0.8;
    margin: 0;
}

.z61f29hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.z61f29hero-img {
    max-width: 320px;
    width: 100%;
    filter: drop-shadow(0 16px 40px rgba(0, 0, 0, 0.25));
}

/* —— 通用区块标题 —— */
.z61f29section-head {
    margin-bottom: 2rem;
}

.z61f29section-title {
    font-size: clamp(1.35rem, 3vw, 1.85rem);
    font-weight: 700;
    color: var(--xf-primary-dark);
    margin-bottom: 0.5rem;
}

.z61f29section-desc {
    color: var(--xf-muted);
    margin: 0;
    max-width: 42em;
}

.z61f29text-center .z61f29section-desc {
    margin-left: auto;
    margin-right: auto;
}

/* —— Intro —— */
.z61f29intro {
    padding: 3rem 0;
}

.z61f29intro-panel {
    background: var(--xf-surface);
    border: 1px solid var(--xf-border);
    border-radius: var(--xf-radius-lg);
    padding: clamp(1.25rem, 4vw, 2.25rem);
    box-shadow: var(--xf-shadow);
}

.z61f29intro-panel p {
    margin-bottom: 1rem;
    color: var(--xf-muted);
}

.z61f29intro-panel p:last-child {
    margin-bottom: 0;
}

/* —— Features 2x2 —— */
.z61f29features {
    padding: 3.5rem 0;
}

.z61f29feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.z61f29feature-tile {
    background: var(--xf-surface);
    border: 1px solid var(--xf-border);
    border-left: 4px solid var(--xf-accent);
    border-radius: var(--xf-radius);
    padding: 1.35rem 1.5rem;
    box-shadow: var(--xf-shadow);
    transition: transform var(--xf-transition), box-shadow var(--xf-transition);
    overflow: hidden;
}

.z61f29feature-tile:hover {
    transform: translateY(-3px);
    box-shadow: var(--xf-shadow-hover);
}

.z61f29feature-num {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--xf-accent);
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.z61f29feature-tile h3 {
    font-size: 1.1rem;
    margin: 0 0 0.5rem;
    color: var(--xf-primary-dark);
}

.z61f29feature-tile p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--xf-muted);
}

/* —— Stats 条 —— */
.z61f29stats {
    padding: 0 0 3rem;
}

.z61f29stat-row {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    background: var(--xf-surface);
    border: 1px solid var(--xf-border);
    border-radius: var(--xf-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--xf-shadow);
}

.z61f29stat-row li {
    text-align: center;
    padding: 0.5rem;
    border-right: 1px solid var(--xf-border);
}

.z61f29stat-row li:last-child {
    border-right: none;
}

.z61f29stat-row strong {
    display: block;
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--xf-primary);
    margin-bottom: 0.25rem;
}

.z61f29stat-row span {
    font-size: 0.88rem;
    color: var(--xf-muted);
}

/* —— Download 三列 —— */
.z61f29download {
    padding: 3.5rem 0;
    background: linear-gradient(180deg, var(--xf-bg) 0%, #e8f0ee 100%);
}

.z61f29download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    align-items: stretch;
}

.z61f29dl-card {
    background: var(--xf-surface);
    border: 1px solid var(--xf-border);
    border-radius: var(--xf-radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    min-height: 0;
    box-shadow: var(--xf-shadow);
    overflow: hidden;
}

.z61f29dl-card.z61f29dl-featured {
    border-color: var(--xf-primary);
    box-shadow: 0 8px 28px rgba(11, 110, 110, 0.15);
}

.z61f29dl-card h3 {
    font-size: 1.1rem;
    color: var(--xf-primary-dark);
    margin: 0 0 0.65rem;
}

.z61f29dl-card > p {
    font-size: 0.9rem;
    color: var(--xf-muted);
    margin-bottom: 1rem;
    flex-grow: 0;
}

.z61f29dl-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #fff;
}

.z61f29dl-mobile {
    background: linear-gradient(135deg, #3d9a6e, #2d7a58);
}

.z61f29dl-desktop {
    background: linear-gradient(135deg, var(--xf-primary), var(--xf-primary-dark));
}

.z61f29dl-guide {
    background: linear-gradient(135deg, var(--xf-accent), #c98a20);
}

.z61f29dl-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.25rem;
    flex-grow: 1;
}

.z61f29dl-list li {
    font-size: 0.88rem;
    color: var(--xf-muted);
    padding: 0.35rem 0 0.35rem 1.1rem;
    position: relative;
}

.z61f29dl-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--xf-accent);
}

.z61f29dl-card .z61f29btn {
    margin-top: auto;
    white-space: normal;
}

/* —— Security —— */
.z61f29security {
    padding: 3.5rem 0;
}

.z61f29security-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.z61f29sec-item {
    background: var(--xf-surface);
    border: 1px solid var(--xf-border);
    border-radius: var(--xf-radius);
    padding: 1.25rem;
    text-align: center;
    box-shadow: var(--xf-shadow);
    overflow: hidden;
}

.z61f29sec-item i {
    font-size: 1.5rem;
    color: var(--xf-primary);
    margin-bottom: 0.75rem;
}

.z61f29sec-item h4 {
    font-size: 1rem;
    margin: 0 0 0.5rem;
    color: var(--xf-primary-dark);
}

.z61f29sec-item p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--xf-muted);
}

/* —— Knowledge —— */
.z61f29knowledge {
    padding: 0 0 3rem;
}

.z61f29knowledge-inner {
    background: var(--xf-primary-dark);
    color: #fff;
    border-radius: var(--xf-radius-lg);
    padding: clamp(1.5rem, 4vw, 2.5rem);
}

.z61f29knowledge-inner .z61f29section-title {
    color: #fff;
    margin-bottom: 1.25rem;
}

.z61f29knowledge-cols {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.z61f29knowledge-cols h3 {
    font-size: 1rem;
    margin: 0 0 0.5rem;
    color: var(--xf-accent);
}

.z61f29knowledge-cols p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.9;
    line-height: 1.6;
}

/* —— FAQ —— */
.z61f29faq {
    padding: 3rem 0;
}

.z61f29faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.z61f29faq-item {
    background: var(--xf-surface);
    border: 1px solid var(--xf-border);
    border-radius: var(--xf-radius);
    padding: 0;
    overflow: hidden;
}

.z61f29faq-item summary {
    padding: 1rem 1.25rem;
    font-weight: 600;
    cursor: pointer;
    color: var(--xf-primary-dark);
    list-style: none;
}

.z61f29faq-item summary::-webkit-details-marker {
    display: none;
}

.z61f29faq-item summary::after {
    content: "+";
    float: right;
    color: var(--xf-accent);
    font-weight: 700;
}

.z61f29faq-item[open] summary::after {
    content: "−";
}

.z61f29faq-item p {
    margin: 0;
    padding: 0 1.25rem 1rem;
    font-size: 0.92rem;
    color: var(--xf-muted);
    border-top: 1px solid var(--xf-border);
    padding-top: 0.75rem;
}

/* —— 文章 —— */
.z61f29articles {
    padding: 3rem 0 4rem;
    background: var(--xf-surface);
    border-top: 1px solid var(--xf-border);
}

.z61f29articles-head {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.z61f29article-card {
    background: var(--xf-bg);
    border: 1px solid var(--xf-border);
    border-radius: var(--xf-radius);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: box-shadow var(--xf-transition);
}

.z61f29article-card:hover {
    box-shadow: var(--xf-shadow-hover);
}

.z61f29thumb-home {
    width: 100%;
    height: 110px;
    object-fit: cover;
}

.z61f29article-body {
    padding: 0.85rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.z61f29article-meta {
    font-size: 0.75rem;
    color: var(--xf-muted);
    margin-bottom: 0.35rem;
}

.z61f29article-title {
    font-size: 0.95rem;
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.z61f29article-title a {
    color: var(--xf-text);
}

.z61f29article-title a:hover {
    color: var(--xf-primary);
}

/* —— 页脚 —— */
.z61f29footer {
    background: #1a2a2a;
    color: #b8c9c6;
    padding: 3rem 0 1.5rem;
}

.z61f29footer-grid {
    display: grid;
    grid-template-columns: 1.4fr repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.z61f29footer-brand-col p {
    font-size: 0.9rem;
    margin-top: 0.75rem;
    line-height: 1.6;
}

.z61f29footer-title {
    color: #fff;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.z61f29footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.z61f29footer-links li {
    margin-bottom: 0.5rem;
}

.z61f29footer-links a {
    color: #b8c9c6;
    font-size: 0.9rem;
}

.z61f29footer-links a:hover {
    color: var(--xf-accent);
}

.z61f29friend-wrap {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    margin-bottom: 1.5rem;
}

.z61f29friend-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
}

.z61f29friend-links a {
    color: #9aada9;
    font-size: 0.88rem;
}

.z61f29footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.25rem;
    text-align: center;
    font-size: 0.85rem;
}

.z61f29footer-bottom p {
    margin: 0.35rem 0;
}

.z61f29footer-bottom a {
    color: #b8c9c6;
}

/* —— 列表页 / 内页 —— */
.z61f29page-main {
    padding: 2.5rem 0 3.5rem;
}

.z61f29page-main .card {
    border: 1px solid var(--xf-border);
    border-radius: var(--xf-radius);
    overflow: hidden;
    box-shadow: var(--xf-shadow);
}

.z61f29page-main .card-body {
    padding: 1.25rem;
}

.z61f29thumb-list,
.z61f29thumb-related {
    width: 100%;
    height: 84px;
    object-fit: cover;
    border-radius: 8px;
}

.z61f29thumb-side {
    width: 100%;
    height: 54px;
    object-fit: cover;
    border-radius: 6px;
}

.z61f29thumb-cover {
    max-width: 100%;
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--xf-radius);
}

.z61f29article-content {
    line-height: 1.75;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.z61f29article-content img {
    max-width: 100%;
    height: auto;
}

.z61f29meta-tags .z61f29tagitem a {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    background: var(--xf-accent-soft);
    border-radius: 999px;
    font-size: 0.85rem;
    margin-bottom: 0.35rem;
}

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

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

.listbox .e2 li:last-child {
    border-bottom: none !important;
    margin-bottom: 0 !important;
    padding-bottom: 0 !important;
}

/* —— 响应式 —— */
@media (max-width: 991px) {
    .z61f29hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .z61f29hero-lead {
        margin-left: auto;
        margin-right: auto;
    }

    .z61f29hero-cta {
        justify-content: center;
    }

    .z61f29hero-visual {
        order: -1;
    }

    .z61f29hero-img {
        max-width: 240px;
    }

    .z61f29feature-grid {
        grid-template-columns: 1fr;
    }

    .z61f29stat-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .z61f29stat-row li:nth-child(2) {
        border-right: none;
    }

    .z61f29stat-row li:nth-child(1),
    .z61f29stat-row li:nth-child(2) {
        border-bottom: 1px solid var(--xf-border);
        padding-bottom: 1rem;
    }

    .z61f29download-grid {
        grid-template-columns: 1fr;
    }

    .z61f29security-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .z61f29knowledge-cols {
        grid-template-columns: 1fr;
    }

    .z61f29faq-grid {
        grid-template-columns: 1fr;
    }

    .z61f29footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 767px) {
    .z61f29navbar {
        padding: 0.5rem 0;
    }

    .z61f29navbar .navbar-collapse {
        margin-top: 0.5rem;
        padding: 0.75rem;
        border: 1px solid var(--xf-border);
        border-radius: var(--xf-radius);
        max-height: 70vh;
        overflow-y: auto;
    }

    .z61f29nav-link {
        padding: 0.5rem 0.35rem !important;
    }

    .z61f29hero-cta {
        flex-direction: column;
    }

    .z61f29hero-cta .btn {
        width: 100%;
    }

    .z61f29stat-row {
        grid-template-columns: 1fr 1fr;
        padding: 1rem;
    }

    .z61f29stat-row li {
        border-right: none;
        border-bottom: 1px solid var(--xf-border);
        padding: 0.75rem 0.5rem;
    }

    .z61f29stat-row li:nth-child(3),
    .z61f29stat-row li:nth-child(4) {
        border-bottom: none;
    }

    .z61f29security-grid {
        grid-template-columns: 1fr;
    }

    .z61f29footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .z61f29friend-links {
        justify-content: center;
    }

    .z61f29thumb-home {
        height: 96px;
    }

    .z61f29thumb-list,
    .z61f29thumb-related {
        height: 72px;
    }

    .z61f29thumb-cover {
        height: 170px;
    }

    .z61f29page-main .card-body {
        padding: 1rem;
    }
}

@media (max-width: 575px) {
    .z61f29stat-row {
        grid-template-columns: 1fr;
    }

    .z61f29stat-row li {
        border-bottom: 1px solid var(--xf-border) !important;
    }

    .z61f29stat-row li:last-child {
        border-bottom: none !important;
    }

    .z61f29dl-card {
        padding: 1.15rem;
    }

    .z61f29thumb-home {
        height: 88px;
    }

    .z61f29thumb-list,
    .z61f29thumb-related {
        height: 64px;
    }

    .z61f29thumb-cover {
        height: 150px;
    }
}