/* AiCoin 官网主题 — 靛紫 + 琥珀，单文件样式 */
:root {
    --ac-primary: #5b21b6;
    --ac-primary-light: #7c3aed;
    --ac-primary-dark: #4c1d95;
    --ac-accent: #d97706;
    --ac-accent-light: #fbbf24;
    --ac-surface: #faf8ff;
    --ac-surface-alt: #f3efff;
    --ac-text: #1e1b2e;
    --ac-text-muted: #5c5670;
    --ac-border: rgba(91, 33, 182, 0.12);
    --ac-radius: 14px;
    --ac-radius-lg: 22px;
    --ac-shadow: 0 4px 24px rgba(76, 29, 149, 0.08);
    --ac-shadow-hover: 0 12px 32px rgba(76, 29, 149, 0.14);
    --ac-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --ac-container: min(1140px, calc(100% - 2rem));
}

*, *::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(--ac-text);
    line-height: 1.65;
    background: #fff;
    margin: 0;
    overflow-x: hidden;
}

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

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

a:hover {
    color: var(--ac-primary-light);
}

/* —— 导航 —— */
.zc6363navbar {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--ac-border);
    padding: 0.65rem 0;
    position: sticky;
    top: 0;
    z-index: 1030;
}

.zc6363navbar .container {
    max-width: var(--ac-container);
}

.zc6363navbar-brand img {
    height: 42px;
    width: auto;
}

.zc6363nav-link {
    color: var(--ac-text) !important;
    font-weight: 500;
    font-size: 0.92rem;
    padding: 0.45rem 0.85rem !important;
    border-radius: 8px;
    transition: color var(--ac-transition), background var(--ac-transition);
}

.zc6363nav-link:hover {
    color: var(--ac-primary) !important;
    background: var(--ac-surface-alt);
}

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

.navbar-collapse {
    background: #fff;
}

@media (max-width: 991px) {
    .navbar-collapse {
        margin-top: 0.5rem;
        padding: 0.75rem;
        border-radius: var(--ac-radius);
        border: 1px solid var(--ac-border);
        max-height: 70vh;
        overflow-y: auto;
    }

    .zc6363nav-link {
        padding: 0.55rem 0.5rem !important;
    }
}

/* —— 首页 Hero —— */
.zc6363hero-section {
    background: linear-gradient(145deg, var(--ac-primary-dark) 0%, var(--ac-primary) 45%, #6d28d9 100%);
    color: #fff;
    padding: clamp(3rem, 8vw, 5.5rem) 0;
    position: relative;
    overflow: hidden;
}

.zc6363hero-section::after {
    content: "";
    position: absolute;
    right: -15%;
    bottom: -30%;
    width: 55%;
    height: 120%;
    background: radial-gradient(circle, rgba(251, 191, 36, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.zc6363hero-section .container {
    max-width: var(--ac-container);
    position: relative;
    z-index: 1;
}

.zc6363hero-title {
    font-size: clamp(1.75rem, 4.5vw, 2.75rem);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.zc6363hero-subtitle {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    opacity: 0.92;
    margin-bottom: 1.75rem;
    max-width: 36em;
}

.zc6363hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.zc6363hero-buttons .btn {
    padding: 0.7rem 1.35rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--ac-transition), box-shadow var(--ac-transition);
}

.zc6363hero-buttons .btn-light {
    background: #fff;
    color: var(--ac-primary-dark);
}

.zc6363hero-buttons .btn-primary {
    background: var(--ac-accent);
    color: #1e1b2e;
}

.zc6363hero-buttons .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
}

.zc6363hero-image-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.zc6363hero-image {
    max-width: min(320px, 90%);
    border-radius: var(--ac-radius-lg);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
    margin: 0 auto;
}

.zc6363hero-image-shadow {
    display: none;
}

/* —— 简介条 —— */
.zc6363intro-strip {
    background: var(--ac-surface);
    border-bottom: 1px solid var(--ac-border);
    padding: 2rem 0;
}

.zc6363intro-strip .container {
    max-width: var(--ac-container);
}

.zc6363intro-strip p {
    margin: 0;
    color: var(--ac-text-muted);
    font-size: 1.02rem;
    text-align: center;
    max-width: 52em;
    margin-left: auto;
    margin-right: auto;
}

/* —— 通用区块 —— */
.ac-section {
    padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}

.ac-section .container {
    max-width: var(--ac-container);
}

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

.ac-section-head h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--ac-primary-dark);
    margin-bottom: 0.5rem;
}

.ac-section-head p {
    color: var(--ac-text-muted);
    max-width: 36em;
    margin: 0 auto;
    font-size: 0.98rem;
}

/* —— 特点 Bento —— */
#features {
    background: #fff;
}

.ac-bento {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1rem;
}

.ac-bento-card {
    background: var(--ac-surface);
    border: 1px solid var(--ac-border);
    border-radius: var(--ac-radius-lg);
    padding: 1.5rem;
    height: 100%;
    transition: box-shadow var(--ac-transition), border-color var(--ac-transition);
    overflow: hidden;
}

.ac-bento-card:hover {
    box-shadow: var(--ac-shadow-hover);
    border-color: rgba(91, 33, 182, 0.22);
}

.ac-bento-card.span-4 { grid-column: span 4; }
.ac-bento-card.span-6 { grid-column: span 6; }
.ac-bento-card.span-8 { grid-column: span 8; }

.ac-bento-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--ac-primary), var(--ac-primary-light));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.ac-bento-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--ac-primary-dark);
}

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

/* —— 统计 —— */
.zc6363stats-section {
    background: linear-gradient(90deg, var(--ac-primary-dark), var(--ac-primary-light));
    color: #fff;
    padding: clamp(2rem, 5vw, 3rem) 0;
}

.zc6363stats-section .container {
    max-width: var(--ac-container);
}

.zc6363stats-section .row {
    --bs-gutter-y: 1rem;
}

.zc6363stat-item {
    text-align: center;
    padding: 0.5rem;
}

.zc6363stat-number {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
}

.zc6363stat-label {
    font-size: 0.9rem;
    opacity: 0.88;
    margin-top: 0.25rem;
}

/* —— 下载 —— */
.zc6363download-section {
    background: var(--ac-surface-alt);
    padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}

.zc6363download-section .container {
    max-width: var(--ac-container);
}

.zc6363download-header h2 {
    color: var(--ac-primary-dark);
    font-weight: 700;
}

.zc6363download-subtitle {
    color: var(--ac-text-muted);
}

.zc6363download-card {
    background: #fff;
    border: 1px solid var(--ac-border);
    border-radius: var(--ac-radius-lg);
    box-shadow: var(--ac-shadow);
    height: 100%;
    overflow: hidden;
    transition: box-shadow var(--ac-transition);
}

.zc6363download-card:hover {
    box-shadow: var(--ac-shadow-hover);
}

.zc6363download-card .card-body {
    padding: 1.5rem;
}

.zc6363platform-icon {
    width: 52px;
    height: 52px;
    min-width: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    color: #fff;
}

.zc6363ios-icon {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.zc6363android-icon {
    background: linear-gradient(135deg, #059669, #047857);
}

.zc6363download-info {
    background: var(--ac-surface);
    border: 1px solid var(--ac-border);
    border-radius: var(--ac-radius);
    padding: 1rem 1.15rem;
}

.zc6363info-item {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.6rem;
    font-size: 0.9rem;
    color: var(--ac-text-muted);
}

.zc6363info-item:last-child {
    margin-bottom: 0;
}

.zc6363info-item i {
    color: var(--ac-primary);
    margin-top: 0.15rem;
    flex-shrink: 0;
}

.zc6363download-action .btn,
.zc6363btn.btn-primary {
    background: var(--ac-primary);
    border: none;
    color: #fff;
    border-radius: 10px;
    padding: 0.65rem 1.25rem;
    font-weight: 600;
}

.zc6363download-action .btn:hover,
.zc6363btn.btn-primary:hover {
    background: var(--ac-primary-light);
    color: #fff;
}

/* —— 知识区 —— */
#knowledge {
    background: #fff;
}

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

.ac-knowledge-item {
    border: 1px solid var(--ac-border);
    border-radius: var(--ac-radius);
    padding: 1.25rem 1.35rem;
    background: var(--ac-surface);
}

.ac-knowledge-item h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ac-primary-dark);
    margin-bottom: 0.5rem;
}

.ac-knowledge-item p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--ac-text-muted);
}

/* —— 安全 —— */
.zc6363security-section {
    background: var(--ac-surface);
    padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}

.zc6363security-section .container {
    max-width: var(--ac-container);
}

.zc6363security-header h2 {
    color: var(--ac-primary-dark);
    font-weight: 700;
}

.zc6363security-subtitle {
    color: var(--ac-text-muted);
}

.zc6363security-card {
    background: #fff;
    border: 1px solid var(--ac-border);
    border-radius: var(--ac-radius);
    padding: 1.35rem;
    height: 100%;
    box-shadow: none;
    transition: border-color var(--ac-transition), box-shadow var(--ac-transition);
}

.zc6363security-card:hover {
    border-color: rgba(91, 33, 182, 0.25);
    box-shadow: var(--ac-shadow);
    transform: none;
}

.zc6363security-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--ac-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    margin: 0 0 0.85rem;
}

.zc6363security-card h3 {
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    color: var(--ac-primary-dark);
    margin-bottom: 0.75rem;
}

.zc6363security-features {
    background: transparent;
    padding: 0;
    border-radius: 0;
}

.zc6363feature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.45rem;
    margin-bottom: 0.45rem;
    font-size: 0.88rem;
    color: var(--ac-text-muted);
}

.zc6363feature-item i {
    color: var(--ac-accent);
    margin-right: 0;
    font-size: 0.85rem;
    margin-top: 0.2rem;
}

.zc6363certificate-card {
    background: #fff;
    border: 1px solid var(--ac-border);
    border-radius: var(--ac-radius);
    padding: 1.25rem;
    text-align: center;
    height: 100%;
    box-shadow: none;
}

.zc6363certificate-card:hover {
    box-shadow: var(--ac-shadow);
    transform: none;
}

.zc6363certificate-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 0.75rem;
    border-radius: 50%;
    background: var(--ac-surface-alt);
    color: var(--ac-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.zc6363certificate-card h4 {
    font-size: 0.95rem;
    color: var(--ac-primary-dark);
    margin-bottom: 0.35rem;
}

.zc6363certificate-card p {
    font-size: 0.85rem;
    color: var(--ac-text-muted);
    margin: 0;
}

/* —— FAQ —— */
#faq {
    background: var(--ac-surface-alt);
}

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

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

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

/* —— 文章区 —— */
#article {
    background: #fff;
}

#article .card {
    border: 1px solid var(--ac-border);
    border-radius: var(--ac-radius);
    overflow: hidden;
    box-shadow: none;
}

#article .card:hover {
    border-color: rgba(91, 33, 182, 0.28);
    box-shadow: var(--ac-shadow);
}

.zc6363thumb-home {
    width: 100%;
    object-fit: cover;
}

#article h3.h5 {
    font-size: 0.95rem;
    line-height: 1.4;
}

#article h3.h5 a {
    color: var(--ac-text);
}

#article h3.h5 a:hover {
    color: var(--ac-primary);
}

/* —— 页脚 —— */
.zc6363footer {
    background: var(--ac-primary-dark);
    color: rgba(255, 255, 255, 0.85);
    padding: clamp(2.5rem, 5vw, 3.5rem) 0 1.5rem;
}

.zc6363footer .container {
    max-width: var(--ac-container);
}

.zc6363footer-title {
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.zc6363footer-link {
    color: rgba(255, 255, 255, 0.7);
}

.zc6363footer-link:hover {
    color: var(--ac-accent-light);
}

.zc6363footer p {
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.9rem;
}

.zc6363friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.zc6363friend-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.88rem;
}

.zc6363footer-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;
}

.zc6363footer-bottom a {
    color: rgba(255, 255, 255, 0.75);
}

/* —— 列表/内页 —— */
.zc6363page-main {
    background: var(--ac-surface);
    padding: clamp(2rem, 5vw, 3rem) 0;
    min-height: 50vh;
}

.zc6363page-main .container {
    max-width: var(--ac-container);
}

.zc6363page-main .card {
    border: 1px solid var(--ac-border);
    border-radius: var(--ac-radius);
    overflow: hidden;
}

.zc6363article-content {
    font-size: 1rem;
    line-height: 1.75;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.zc6363article-content img {
    max-width: 100%;
    height: auto;
}

.zc6363meta-tags .zc6363tagitem a {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    background: var(--ac-surface-alt);
    border-radius: 6px;
    font-size: 0.85rem;
}

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

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

/* Bootstrap 辅助 */
.zc6363py-5 {
    padding-top: 0 !important;
    padding-bottom: 0 !important;
}

.bg-light {
    background: transparent !important;
}

.btn-outline-primary {
    border-color: var(--ac-primary);
    color: var(--ac-primary);
}

.btn-outline-primary:hover {
    background: var(--ac-primary);
    border-color: var(--ac-primary);
}

/* —— 响应式 —— */
@media (max-width: 991px) {
    .ac-bento-card.span-4,
    .ac-bento-card.span-6,
    .ac-bento-card.span-8 {
        grid-column: span 12;
    }

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

    .zc6363security-section .row.g-4 > [class*="col-"] {
        margin-bottom: 0;
    }
}

@media (max-width: 767px) {
    .zc6363hero-section {
        text-align: center;
    }

    .zc6363hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .zc6363hero-buttons {
        flex-direction: column;
    }

    .zc6363hero-buttons .btn {
        width: 100%;
    }

    .zc6363download-section .row.g-4 {
        --bs-gutter-y: 1rem;
    }

    .zc6363download-card .d-flex.align-items-center {
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    .zc6363download-card .d-flex.align-items-center .ms-3 {
        margin-left: 0 !important;
        flex: 1 1 100%;
    }

    .zc6363download-action .btn {
        width: 100%;
        white-space: normal;
    }

    .zc6363stat-number {
        font-size: 1.65rem;
    }

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

    #article .zc6363thumb-home {
        height: 100px !important;
    }

    .zc6363thumb-list,
    .zc6363thumb-related {
        height: 72px !important;
    }

    .zc6363thumb-cover {
        max-width: 100% !important;
        width: 100%;
        height: auto !important;
        max-height: 200px;
        object-fit: cover;
    }

    .listbox .e2 li .row {
        flex-wrap: nowrap;
    }

    .zc6363footer .row > [class*="col-"] {
        text-align: center;
        margin-bottom: 1.5rem;
    }

    .zc6363friend-links {
        justify-content: center;
    }
}

/* 统一卡片边框，防止溢出 */
.card,
.ac-bento-card,
.zc6363download-card,
.zc6363security-card,
.zc6363certificate-card,
.ac-knowledge-item {
    max-width: 100%;
}

.zc6363page-main .card-body {
    overflow: hidden;
}

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

@media (max-width: 575px) {
    .zc6363navbar-brand img {
        height: 36px;
    }

    #article .row-cols-md-2 {
        --bs-columns: 1;
    }

    #article .zc6363thumb-home {
        height: 140px !important;
    }

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

    .zc6363thumb-side {
        height: 48px !important;
    }

    aside .card-body h3.h5 {
        font-size: 1rem;
    }
}