/* 河马加速器 — 官网主题（青绿 + 琥珀） */
:root {
    --hm-primary: #0b6b5e;
    --hm-primary-dark: #064a42;
    --hm-primary-light: #e8f5f3;
    --hm-accent: #e8913a;
    --hm-accent-hover: #d47a24;
    --hm-surface: #ffffff;
    --hm-bg: #f4f7f6;
    --hm-bg-alt: #eef2f1;
    --hm-text: #1c2b28;
    --hm-text-muted: #5a6d68;
    --hm-border: rgba(11, 107, 94, 0.12);
    --hm-radius: 12px;
    --hm-radius-lg: 20px;
    --hm-shadow: 0 4px 24px rgba(6, 74, 66, 0.08);
    --hm-shadow-hover: 0 12px 32px rgba(6, 74, 66, 0.14);
    --hm-transition: 0.25s ease;
    --hm-container: 1140px;
}

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

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

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

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

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

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

/* —— 导航 —— */
.zb21b0navbar {
    background: var(--hm-surface);
    border-bottom: 1px solid var(--hm-border);
    padding: 0.65rem 0;
    position: sticky;
    top: 0;
    z-index: 1030;
}

.zb21b0navbar-brand img {
    height: 42px;
    width: auto;
}

.zb21b0nav-link {
    color: var(--hm-text) !important;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.45rem 0.85rem !important;
    border-radius: 8px;
    transition: background var(--hm-transition), color var(--hm-transition);
}

.zb21b0nav-link:hover {
    color: var(--hm-primary) !important;
    background: var(--hm-primary-light);
}

.navbar-toggler {
    border: 1px solid var(--hm-border);
    padding: 0.4rem 0.55rem;
}

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

/* —— 通用区块 —— */
.hm-section {
    padding: 4.5rem 0;
}

.hm-section-alt {
    background: var(--hm-bg-alt);
}

.hm-section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--hm-primary-dark);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.hm-section-lead {
    color: var(--hm-text-muted);
    font-size: 1.05rem;
    max-width: 640px;
    margin: 0 auto 2.5rem;
}

.hm-section-head {
    text-align: center;
    margin-bottom: 2.5rem;
}

/* —— Hero —— */
.zb21b0hero-section {
    background: linear-gradient(160deg, var(--hm-primary-dark) 0%, var(--hm-primary) 55%, #128f7d 100%);
    color: #fff;
    padding: 4rem 0 4.5rem;
    position: relative;
    overflow: hidden;
}

.zb21b0hero-section::after {
    content: "";
    position: absolute;
    right: -10%;
    top: -20%;
    width: 50%;
    height: 140%;
    background: radial-gradient(ellipse, rgba(232, 145, 58, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.zb21b0hero-content {
    position: relative;
    z-index: 1;
}

.hm-hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 0.35rem 0.9rem;
    border-radius: 50px;
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.zb21b0hero-title {
    font-size: clamp(1.75rem, 4.5vw, 2.75rem);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 1rem;
}

.zb21b0hero-subtitle {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    opacity: 0.92;
    margin-bottom: 1.75rem;
    max-width: 520px;
}

.zb21b0hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.zb21b0hero-buttons .btn {
    padding: 0.7rem 1.35rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: normal;
    border: none;
}

.zb21b0hero-buttons .btn-light {
    background: #fff;
    color: var(--hm-primary-dark);
}

.zb21b0hero-buttons .btn-light:hover {
    background: var(--hm-primary-light);
    color: var(--hm-primary-dark);
    transform: translateY(-2px);
}

.zb21b0hero-buttons .btn-primary,
.zb21b0btn.btn-primary {
    background: var(--hm-accent);
    color: #fff;
}

.zb21b0hero-buttons .btn-primary:hover,
.zb21b0btn.btn-primary:hover {
    background: var(--hm-accent-hover);
    color: #fff;
    transform: translateY(-2px);
}

.zb21b0hero-image-container {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.zb21b0hero-image {
    max-width: 280px;
    width: 100%;
    border-radius: var(--hm-radius-lg);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
    object-fit: contain;
}

.zb21b0hero-image-shadow {
    display: none;
}

/* —— 简介条 —— */
.hm-intro-bar {
    background: var(--hm-surface);
    border-bottom: 1px solid var(--hm-border);
    padding: 1.5rem 0;
}

.hm-intro-bar p {
    margin: 0;
    color: var(--hm-text-muted);
    font-size: 0.98rem;
    text-align: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

/* —— 优势卡片（横向布局） —— */
.hm-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.zb21b0feature-card {
    background: var(--hm-surface);
    border: 1px solid var(--hm-border);
    border-radius: var(--hm-radius);
    padding: 1.5rem;
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    box-shadow: var(--hm-shadow);
    transition: box-shadow var(--hm-transition), border-color var(--hm-transition);
    overflow: hidden;
}

.zb21b0feature-card:hover {
    box-shadow: var(--hm-shadow-hover);
    border-color: rgba(11, 107, 94, 0.25);
    transform: none;
}

.zb21b0feature-icon {
    width: 48px;
    height: 48px;
    font-size: 1.35rem;
    color: var(--hm-primary);
    background: var(--hm-primary-light);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    flex-shrink: 0;
}

.zb21b0feature-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--hm-primary-dark);
    margin: 0;
}

.zb21b0feature-card p {
    font-size: 0.92rem;
    color: var(--hm-text-muted);
    margin: 0;
    flex: 1;
}

/* —— 数据条 —— */
.zb21b0stats-section {
    background: var(--hm-primary-dark);
    color: #fff;
    padding: 2.5rem 0;
}

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

.zb21b0stat-item {
    text-align: center;
    padding: 1rem 0.5rem;
    border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.zb21b0stat-item:last-child {
    border-right: none;
}

.zb21b0stat-number {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--hm-accent);
}

.zb21b0stat-label {
    font-size: 0.9rem;
    opacity: 0.88;
}

/* —— 知识区 —— */
.hm-knowledge {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    align-items: start;
}

.hm-knowledge-card {
    background: var(--hm-surface);
    border: 1px solid var(--hm-border);
    border-radius: var(--hm-radius);
    padding: 1.5rem;
    height: 100%;
    overflow: hidden;
}

.hm-knowledge-card h3 {
    font-size: 1.05rem;
    color: var(--hm-primary-dark);
    margin: 0 0 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--hm-accent);
    display: inline-block;
}

.hm-knowledge-card p,
.hm-knowledge-card ul {
    font-size: 0.92rem;
    color: var(--hm-text-muted);
    margin: 0;
}

.hm-knowledge-card ul {
    padding-left: 1.2rem;
}

.hm-knowledge-card li {
    margin-bottom: 0.4rem;
}

/* —— 下载区 —— */
.zb21b0download-section {
    padding: 4.5rem 0;
    background: var(--hm-surface);
}

.zb21b0download-header h2 {
    color: var(--hm-primary-dark);
    font-weight: 700;
}

.zb21b0download-subtitle {
    color: var(--hm-text-muted);
}

.hm-download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.zb21b0download-card {
    border: 1px solid var(--hm-border);
    border-radius: var(--hm-radius);
    background: var(--hm-bg);
    box-shadow: var(--hm-shadow);
    height: 100%;
    overflow: hidden;
    transition: box-shadow var(--hm-transition);
}

.zb21b0download-card:hover {
    box-shadow: var(--hm-shadow-hover);
    transform: none;
}

.zb21b0download-card .card-body {
    padding: 1.35rem !important;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.zb21b0platform-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.zb21b0ios-icon {
    background: linear-gradient(135deg, #0078d4, #005a9e);
    color: #fff;
}

.zb21b0android-icon {
    background: linear-gradient(135deg, #3ddc84, #2a9d5c);
    color: #fff;
}

.hm-icon-mobile {
    background: linear-gradient(135deg, var(--hm-primary), var(--hm-primary-dark));
    color: #fff;
}

.zb21b0download-info {
    background: var(--hm-surface);
    border: 1px solid var(--hm-border);
    padding: 1rem;
    border-radius: 8px;
    flex: 1;
}

.zb21b0info-item {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.88rem;
    color: var(--hm-text-muted);
}

.zb21b0info-item:last-child {
    margin-bottom: 0;
}

.zb21b0info-item i {
    color: var(--hm-primary);
    margin-top: 0.15rem;
    flex-shrink: 0;
}

.zb21b0download-action {
    margin-top: auto;
    padding-top: 1rem;
}

.zb21b0download-action .btn {
    width: 100%;
    padding: 0.65rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    white-space: normal;
    overflow: visible;
    text-overflow: clip;
}

/* —— 安全区 —— */
.zb21b0security-section {
    padding: 4.5rem 0;
    background: var(--hm-bg-alt);
}

.zb21b0security-header h2 {
    color: var(--hm-primary-dark);
    font-weight: 700;
}

.zb21b0security-subtitle {
    color: var(--hm-text-muted);
}

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

.zb21b0security-card {
    background: var(--hm-surface);
    border: 1px solid var(--hm-border);
    border-radius: var(--hm-radius);
    padding: 1.35rem;
    height: 100%;
    box-shadow: none;
    text-align: center;
    overflow: hidden;
}

.zb21b0security-card:hover {
    border-color: rgba(11, 107, 94, 0.3);
    box-shadow: var(--hm-shadow);
    transform: none;
}

.zb21b0security-icon {
    width: 52px;
    height: 52px;
    font-size: 1.25rem;
    margin: 0 auto 1rem;
    background: var(--hm-primary-light);
    color: var(--hm-primary);
    border-radius: 50%;
}

.zb21b0security-card h3 {
    font-size: 1rem;
    color: var(--hm-primary-dark);
    margin-bottom: 0.75rem;
    text-align: center;
}

.zb21b0security-features {
    background: transparent;
    padding: 0;
    text-align: left;
}

.zb21b0feature-item {
    font-size: 0.85rem;
    margin-bottom: 0.4rem;
}

.zb21b0feature-item i {
    color: var(--hm-accent);
    margin-right: 0.4rem;
}

.zb21b0security-certificates {
    margin-top: 2rem;
}

.hm-cert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.zb21b0certificate-card {
    background: var(--hm-surface);
    border: 1px solid var(--hm-border);
    border-radius: var(--hm-radius);
    padding: 1.25rem;
    height: 100%;
    box-shadow: none;
    overflow: hidden;
}

.zb21b0certificate-card:hover {
    box-shadow: var(--hm-shadow);
    transform: none;
}

.zb21b0certificate-icon {
    width: 48px;
    height: 48px;
    font-size: 1.2rem;
    background: var(--hm-primary-light);
    color: var(--hm-primary);
    margin-bottom: 0.75rem;
}

.zb21b0certificate-card h4 {
    font-size: 0.95rem;
    color: var(--hm-primary-dark);
    margin-bottom: 0.35rem;
}

.zb21b0certificate-card p {
    font-size: 0.82rem;
    color: var(--hm-text-muted);
}

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

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

#faq .card {
    border: 1px solid var(--hm-border);
    border-radius: var(--hm-radius);
    box-shadow: none;
    height: 100%;
    overflow: hidden;
}

#faq .card-body {
    padding: 1.25rem;
}

#faq .card-title {
    font-size: 1rem;
    color: var(--hm-primary-dark);
    font-weight: 600;
}

#faq .card-text {
    font-size: 0.9rem;
    color: var(--hm-text-muted);
    margin: 0;
}

/* —— 文章区 —— */
#article.hm-section {
    background: var(--hm-bg-alt);
}

#article .card {
    border: 1px solid var(--hm-border);
    border-radius: var(--hm-radius);
    overflow: hidden;
    box-shadow: var(--hm-shadow);
}

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

.zb21b0thumb-home {
    height: 110px !important;
    object-fit: cover;
    width: 100%;
}

#article h3.h5 {
    font-size: 0.9rem;
    line-height: 1.4;
}

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

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

/* —— 页脚 —— */
.zb21b0footer {
    background: var(--hm-primary-dark);
    color: rgba(255, 255, 255, 0.85);
    padding: 3rem 0 1.5rem;
}

.zb21b0footer-title {
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.zb21b0footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.zb21b0footer-links li {
    margin-bottom: 0.5rem;
}

.zb21b0footer-link {
    color: rgba(255, 255, 255, 0.7);
}

.zb21b0footer-link:hover {
    color: var(--hm-accent);
}

.zb21b0footer p {
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.9rem;
}

.zb21b0friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.zb21b0friend-links a {
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.88rem;
}

.zb21b0footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding-top: 1.25rem;
    margin-top: 2rem;
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.88rem;
}

.zb21b0footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
}

/* —— 列表页 / 内页 —— */
.zb21b0page-main {
    padding: 2.5rem 0 3rem;
    background: var(--hm-bg);
    min-height: 50vh;
}

.zb21b0page-main .card {
    border: 1px solid var(--hm-border);
    border-radius: var(--hm-radius);
    overflow: hidden;
}

.zb21b0article-content {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--hm-text);
    overflow-wrap: break-word;
}

.zb21b0article-content img {
    max-width: 100%;
    height: auto;
}

.zb21b0meta-tags .zb21b0tagitem a {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    background: var(--hm-primary-light);
    border-radius: 6px;
    font-size: 0.85rem;
    margin-bottom: 0.35rem;
}

.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;
    margin: 0;
}

/* —— Bootstrap 覆盖 —— */
.btn-primary.zb21b0btn {
    background: var(--hm-primary);
    border-color: var(--hm-primary);
}

.btn-primary.zb21b0btn:hover {
    background: var(--hm-primary-dark);
    border-color: var(--hm-primary-dark);
}

/* —— 响应式 —— */
@media (max-width: 991px) {
    .hm-features-grid,
    .hm-download-grid {
        grid-template-columns: 1fr;
    }

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

    .zb21b0stat-item:nth-child(2) {
        border-right: none;
    }

    .zb21b0stat-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding: 0.85rem;
    }

    .zb21b0stat-item:nth-last-child(-n+2) {
        border-bottom: none;
    }

    .hm-knowledge {
        grid-template-columns: 1fr;
    }

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

    .hm-cert-grid {
        grid-template-columns: 1fr;
    }

    .hm-faq-grid {
        grid-template-columns: 1fr;
    }

    .zb21b0hero-section {
        padding: 3rem 0;
    }

    .zb21b0hero-image-container {
        margin-top: 1.5rem;
    }
}

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

    .zb21b0download-section,
    .zb21b0security-section {
        padding: 3rem 0;
    }

    .zb21b0navbar {
        padding: 0.5rem 0;
    }

    .zb21b0navbar .navbar-collapse {
        margin-top: 0.5rem;
        max-height: 70vh;
        overflow-y: auto;
        border-radius: var(--hm-radius);
        border: 1px solid var(--hm-border);
        padding: 0.5rem;
    }

    .zb21b0hero-buttons {
        flex-direction: column;
    }

    .zb21b0hero-buttons .btn {
        width: 100%;
    }

    .zb21b0download-card .d-flex.align-items-center {
        flex-direction: row;
        text-align: left;
    }

    .zb21b0download-card .d-flex.align-items-center .ms-3 {
        margin-left: 0.75rem !important;
    }

    #article .row-cols-lg-5 {
        --bs-columns: 2;
    }

    .zb21b0thumb-home {
        height: 96px !important;
    }

    #article h3.h5 {
        font-size: 0.88rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .listbox .e2 li h2.h5 {
        font-size: 0.95rem;
    }

    .zb21b0thumb-list,
    .zb21b0thumb-related {
        height: 72px !important;
    }

    .zb21b0thumb-cover {
        max-width: 100% !important;
        width: 100%;
        height: 170px !important;
    }

    .zb21b0footer .row > [class*="col-"] {
        text-align: center;
        margin-bottom: 1.5rem;
    }

    .zb21b0friend-links {
        justify-content: center;
    }
}

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

    .hm-security-grid {
        grid-template-columns: 1fr;
    }

    .zb21b0stat-number {
        font-size: 1.35rem;
    }

    .zb21b0thumb-home {
        height: 88px !important;
    }

    .zb21b0thumb-list,
    .zb21b0thumb-related {
        height: 64px !important;
    }

    .zb21b0thumb-cover {
        height: 150px !important;
    }

    .zb21b0navbar-brand img {
        height: 36px;
    }
}