/* 欧易下载官网 · 潮流主题 v2 | 暮光橙 + 深海蓝 + 翡翠绿 */
:root {
    --brand: #f97316;
    --brand-dark: #ea580c;
    --brand-deep: #c2410c;
    --blue: #1d4ed8;
    --blue-light: #3b82f6;
    --accent: #10b981;
    --accent-glow: rgba(16, 185, 129, 0.2);
    --gold: #fbbf24;
    --dark: #0c0f1a;
    --dark-soft: #151a2e;
    --dark-card: #1c2238;
    --surface: #f4f5f8;
    --surface-card: #ffffff;
    --text: #1a1d26;
    --text-muted: #5c6370;
    --text-on-dark: #eef0f6;
    --border: rgba(29, 78, 216, 0.12);
    --border-warm: rgba(249, 115, 22, 0.22);
    --border-width: 1px;
    --radius: 14px;
    --radius-sm: 10px;
    --radius-lg: 20px;
    --card-pad: 1.25rem;
    --grid-gap: 1rem;
    --section-pad-y: clamp(2.25rem, 4.5vw, 3.75rem);
    --shadow: 0 10px 40px rgba(12, 15, 26, 0.08);
    --shadow-warm: 0 12px 36px rgba(249, 115, 22, 0.18);
    --font: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', system-ui, sans-serif;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font);
    color: var(--text);
    background: var(--surface);
    line-height: 1.65;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--brand-dark); }

/* 导航 */
.zc8a75navbar {
    position: sticky;
    top: 0;
    z-index: 1050;
    background: rgba(12, 15, 26, 0.9);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding: 0.7rem 0;
}
.zc8a75navbar .navbar-brand img { height: 40px; }
.zc8a75nav-link {
    color: rgba(238, 240, 246, 0.88) !important;
    font-weight: 500;
    font-size: 0.92rem;
    padding: 0.5rem 0.9rem !important;
    border-radius: 999px;
    transition: background 0.2s, color 0.2s;
}
.zc8a75nav-link:hover,
.zc8a75nav-item.active .zc8a75nav-link {
    color: var(--gold) !important;
    background: rgba(249, 115, 22, 0.15);
}
.navbar-toggler { border: 1px solid rgba(255,255,255,0.15); padding: 0.4rem 0.55rem; }
.navbar-toggler-icon { filter: invert(1); }
.navbar-collapse {
    background: var(--dark-card);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    margin-top: 0.5rem;
    border: 1px solid rgba(255,255,255,0.08);
}
@media (min-width: 992px) {
    .navbar-collapse { background: transparent; border: none; padding: 0; margin: 0; }
}
@media (max-width: 991.98px) {
    .zc8a75navbar .navbar-collapse {
        max-height: min(70vh, 22rem);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    .zc8a75navbar .navbar-nav {
        width: 100%;
        gap: 0.15rem;
    }
    .zc8a75navbar .nav-item { width: 100%; }
    .zc8a75navbar .zc8a75nav-link {
        display: block;
        width: 100%;
        border-radius: var(--radius-sm);
        padding: 0.65rem 0.85rem !important;
        text-align: left;
        font-size: 0.9rem;
    }
    .navbar-toggler {
        min-width: 44px;
        min-height: 44px;
        padding: 0.5rem;
    }
}

.zc8a75container.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding-left: max(16px, env(safe-area-inset-left, 0px));
    padding-right: max(16px, env(safe-area-inset-right, 0px));
}

/* 防止栅格/卡片内容撑破容器 */
.zc8a75container .row {
    --bs-gutter-x: 1rem;
    --bs-gutter-y: 1rem;
    margin-left: calc(var(--bs-gutter-x) * -0.5);
    margin-right: calc(var(--bs-gutter-x) * -0.5);
}
.zc8a75about-grid,
.zc8a75product-row,
.zc8a75feature-grid,
.zc8a75timeline,
.zc8a75stats-grid,
.zc8a75download-grid,
.zc8a75security-grid,
.zc8a75certs,
.zc8a75footer-grid {
    gap: var(--grid-gap);
}
.zc8a75about-card,
.zc8a75product-item,
.zc8a75feature-card,
.zc8a75timeline-item,
.zc8a75stat-box,
.zc8a75dl-card,
.zc8a75sec-card,
.zc8a75cert,
.zc8a75news-card,
.zc8a75news-grid > .col {
    min-width: 0;
}

/* 统一卡片边框（覆盖 Bootstrap .card 默认） */
.zc8a75content-card.card,
.zc8a75sidebar-card.card,
.zc8a75news-card {
    border: var(--border-width) solid var(--border) !important;
}
.zc8a75inner-main .card.shadow-sm:not(.zc8a75content-card):not(.zc8a75sidebar-card) {
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow) !important;
    overflow: hidden;
}
.zc8a75inner-main .card.shadow-sm .card-body {
    padding: var(--card-pad);
}

/* 区块标题 */
.zc8a75section-head { text-align: center; max-width: 660px; margin: 0 auto 2rem; }
.zc8a75section-label {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--brand);
    background: linear-gradient(90deg, rgba(249,115,22,0.12), rgba(29,78,216,0.08));
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    margin-bottom: 0.75rem;
}
.zc8a75section-title {
    font-size: clamp(1.45rem, 3.2vw, 2.15rem);
    font-weight: 800;
    margin: 0 0 0.6rem;
    line-height: 1.22;
    color: var(--text);
}
.zc8a75section-desc { color: var(--text-muted); font-size: 1rem; margin: 0; }

/* 英雄区 */
.zc8a75hero {
    position: relative;
    background: var(--dark);
    color: var(--text-on-dark);
    padding: clamp(2.5rem, 7vw, 5rem) 0 clamp(2rem, 5vw, 3.5rem);
    overflow: hidden;
}
.zc8a75hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 55% at 0% 100%, rgba(249, 115, 22, 0.35), transparent 55%),
        radial-gradient(ellipse 50% 45% at 100% 0%, rgba(29, 78, 216, 0.4), transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.08), transparent 60%);
    pointer-events: none;
}
.zc8a75hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 2.5rem;
    align-items: center;
}
.zc8a75hero-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    background: rgba(251, 191, 36, 0.12);
    border: 1px solid rgba(251, 191, 36, 0.35);
    color: var(--gold);
    margin-bottom: 1.15rem;
}
.zc8a75hero-title {
    font-size: clamp(1.8rem, 4.5vw, 3.1rem);
    font-weight: 800;
    line-height: 1.12;
    margin: 0 0 1rem;
    background: linear-gradient(120deg, #fff 30%, #fed7aa 70%, #93c5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.zc8a75hero-lead { font-size: clamp(0.94rem, 2vw, 1.08rem); opacity: 0.9; margin-bottom: 1.15rem; max-width: 540px; }
.zc8a75hero-pills { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-bottom: 1.4rem; }
.zc8a75hero-pill {
    font-size: 0.75rem;
    padding: 0.28rem 0.65rem;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
}
.zc8a75hero-actions { display: flex; flex-wrap: wrap; gap: 0.65rem; margin-bottom: 1.75rem; }
.zc8a75btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.72rem 1.4rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.94rem;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
}
.zc8a75btn-primary {
    background: linear-gradient(135deg, var(--brand), var(--brand-deep));
    color: #fff;
    box-shadow: var(--shadow-warm);
}
.zc8a75btn-primary:hover { color: #fff; transform: translateY(-2px); }
.zc8a75btn-accent {
    background: linear-gradient(135deg, var(--accent), #059669);
    color: #fff;
}
.zc8a75btn-accent:hover { color: #fff; transform: translateY(-2px); }
.zc8a75btn-ghost {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.35);
}
.zc8a75btn-ghost:hover { color: var(--gold); border-color: var(--gold); }
.zc8a75btn-outline {
    background: transparent;
    color: var(--brand-dark);
    border: 2px solid var(--brand);
}
.zc8a75btn-outline:hover { background: var(--brand); color: #fff; }
.zc8a75hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.65rem;
    padding-top: 1.35rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.zc8a75hero-stat strong { display: block; font-size: 1.1rem; color: var(--gold); }
.zc8a75hero-stat span { font-size: 0.74rem; opacity: 0.75; }
.zc8a75hero-visual { display: flex; justify-content: center; align-items: center; position: relative; }
.zc8a75hero-visual::after {
    content: '';
    position: absolute;
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.35), transparent 70%);
    filter: blur(50px);
}
.zc8a75hero-img {
    position: relative;
    z-index: 1;
    max-width: 280px;
    width: 100%;
    border-radius: var(--radius-lg);
    border: var(--border-width) solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 20px 48px rgba(0, 0, 0, 0.4);
}

/* 信任条 */
.zc8a75trust-bar {
    background: linear-gradient(90deg, var(--dark-soft), var(--dark-card));
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 0.9rem 0;
}
.zc8a75trust-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem 2rem;
    font-size: 0.84rem;
    color: rgba(238, 240, 246, 0.75);
}
.zc8a75trust-inner i { color: var(--accent); margin-right: 0.3rem; }

/* 关于 */
.zc8a75about {
    padding: var(--section-pad-y) 0;
    background: var(--surface-card);
}
.zc8a75about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}
.zc8a75about-card {
    padding: var(--card-pad);
    border-radius: var(--radius);
    background: var(--surface);
    border: var(--border-width) solid var(--border);
    height: 100%;
    transition: transform 0.25s, box-shadow 0.25s;
}
.zc8a75about-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--border-warm);
}
.zc8a75about-icon {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #fff;
    background: linear-gradient(135deg, var(--blue), var(--brand));
    margin-bottom: 0.85rem;
}
.zc8a75about-card h3 { font-size: 1.02rem; font-weight: 700; margin: 0 0 0.45rem; }
.zc8a75about-card p { margin: 0; font-size: 0.9rem; color: var(--text-muted); }

/* 交易矩阵 */
.zc8a75products {
    padding: var(--section-pad-y) 0;
    background: linear-gradient(180deg, #eef2ff 0%, var(--surface) 100%);
}
.zc8a75product-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}
.zc8a75product-item {
    text-align: center;
    padding: var(--card-pad) 1rem;
    border-radius: var(--radius);
    background: var(--surface-card);
    border: var(--border-width) solid var(--border);
    transition: border-color 0.2s, transform 0.2s;
}
.zc8a75product-item:hover {
    border-color: var(--blue-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}
.zc8a75product-item i {
    font-size: 1.75rem;
    margin-bottom: 0.65rem;
    background: linear-gradient(135deg, var(--brand), var(--blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.zc8a75product-item h4 { font-size: 0.95rem; margin: 0 0 0.3rem; }
.zc8a75product-item p { font-size: 0.8rem; color: var(--text-muted); margin: 0; }

/* 核心能力 */
.zc8a75features {
    padding: var(--section-pad-y) 0;
    background: var(--surface);
}
.zc8a75feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}
.zc8a75feature-card {
    background: var(--surface-card);
    border-radius: var(--radius);
    padding: var(--card-pad);
    border: var(--border-width) solid var(--border);
    height: 100%;
    position: relative;
    overflow: hidden;
}
.zc8a75feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--brand), var(--blue-light));
    opacity: 0;
    transition: opacity 0.25s;
}
.zc8a75feature-card:hover::before { opacity: 1; }
@media (min-width: 992px) {
    .zc8a75feature-card.feature-lg { grid-column: span 2; }
}
.zc8a75feature-num {
    font-size: 2.25rem;
    font-weight: 800;
    color: rgba(249, 115, 22, 0.12);
    line-height: 1;
    margin-bottom: 0.45rem;
}
.zc8a75feature-card h3 { font-size: 1.02rem; font-weight: 700; margin: 0 0 0.4rem; }
.zc8a75feature-card p { margin: 0; font-size: 0.88rem; color: var(--text-muted); }

/* 开户 */
.zc8a75register {
    padding: var(--section-pad-y) 0;
    background: var(--surface-card);
}
.zc8a75timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    position: relative;
}
.zc8a75timeline::before {
    content: '';
    position: absolute;
    top: 28px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(90deg, var(--brand), var(--blue-light), var(--accent));
    z-index: 0;
}
.zc8a75timeline-item {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0.75rem 0.5rem;
    border-radius: var(--radius-sm);
    border: var(--border-width) solid transparent;
}
@media (max-width: 991px) {
    .zc8a75timeline-item {
        border-color: var(--border);
        background: var(--surface);
    }
}
.zc8a75timeline-dot {
    width: 48px;
    height: 48px;
    margin: 0 auto 0.75rem;
    border-radius: 50%;
    background: linear-gradient(145deg, var(--brand), var(--blue));
    color: #fff;
    font-weight: 800;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--surface-card);
    box-shadow: 0 4px 14px rgba(249, 115, 22, 0.25);
}
.zc8a75timeline-item h4 { font-size: 0.92rem; font-weight: 700; margin: 0 0 0.3rem; }
.zc8a75timeline-item p { font-size: 0.82rem; color: var(--text-muted); margin: 0; }
/* 数据 */
.zc8a75stats {
    padding: var(--section-pad-y) 0;
    background: linear-gradient(135deg, var(--dark) 0%, #1e3a5f 50%, var(--dark-soft) 100%);
    color: var(--text-on-dark);
}
.zc8a75stats .zc8a75section-title { color: #fff; }
.zc8a75stats .zc8a75section-desc { color: rgba(238, 240, 246, 0.78); }
.zc8a75stats .zc8a75section-title--light { color: #fff; }
.zc8a75stats .zc8a75section-desc--muted { color: rgba(238, 240, 246, 0.78); }
.zc8a75stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}
.zc8a75stat-box {
    text-align: center;
    padding: 1.15rem 0.65rem;
    min-height: 5.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.05);
    border: var(--border-width) solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
}
.zc8a75stat-value {
    display: block;
    font-size: clamp(1.65rem, 4vw, 2.35rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--gold), var(--brand));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.zc8a75stat-name { font-size: 0.86rem; opacity: 0.82; margin-top: 0.2rem; display: block; }

/* 下载 */
.zc8a75download {
    padding: var(--section-pad-y) 0;
    background: var(--surface);
}
.zc8a75download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}
.zc8a75dl-card {
    background: var(--surface-card);
    border-radius: var(--radius);
    border: var(--border-width) solid var(--border);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    transition: box-shadow 0.25s, border-color 0.25s;
}
.zc8a75dl-card:hover {
    border-color: var(--brand);
    box-shadow: var(--shadow-warm);
}
.zc8a75dl-head {
    padding: var(--card-pad) var(--card-pad) 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.zc8a75dl-head section { min-width: 0; flex: 1; }
.zc8a75dl-icon {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    color: #fff;
    flex-shrink: 0;
}
.zc8a75dl-icon.ios { background: linear-gradient(135deg, #525252, #171717); }
.zc8a75dl-icon.android { background: linear-gradient(135deg, #34d399, #059669); }
.zc8a75dl-icon.win { background: linear-gradient(135deg, var(--blue-light), var(--blue)); }
.zc8a75dl-head h3 { font-size: 1rem; font-weight: 700; margin: 0 0 0.1rem; }
.zc8a75dl-head p { font-size: 0.78rem; color: var(--text-muted); margin: 0; }
.zc8a75dl-body { padding: 0.75rem var(--card-pad) 0; flex: 1; min-width: 0; }
.zc8a75dl-list {
    list-style: none;
    padding: 0.75rem 0.85rem;
    margin: 0;
    background: var(--surface);
    border-radius: var(--radius-sm);
    border: var(--border-width) solid var(--border);
}
.zc8a75dl-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.45rem;
    font-size: 0.86rem;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}
.zc8a75dl-list li:last-child { margin-bottom: 0; }
.zc8a75dl-list i { color: var(--accent); margin-top: 0.12rem; flex-shrink: 0; }
.zc8a75dl-foot { padding: 0.75rem var(--card-pad) var(--card-pad); }
.zc8a75dl-foot .zc8a75btn { width: 100%; max-width: 100%; box-sizing: border-box; }

/* 安全 */
.zc8a75security {
    padding: var(--section-pad-y) 0;
    background: var(--surface-card);
}
.zc8a75security-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}
.zc8a75sec-card {
    padding: var(--card-pad);
    border-radius: var(--radius);
    background: var(--surface);
    border: var(--border-width) solid var(--border);
    height: 100%;
}
.zc8a75sec-icon {
    width: 42px;
    height: 42px;
    border-radius: 11px;
    background: var(--accent-glow);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    margin-bottom: 0.75rem;
}
.zc8a75sec-card h3 { font-size: 0.96rem; font-weight: 700; margin: 0 0 0.65rem; }
.zc8a75sec-list { list-style: none; padding: 0; margin: 0; font-size: 0.8rem; color: var(--text-muted); }
.zc8a75sec-list li { padding: 0.32rem 0; border-bottom: 1px solid var(--border); }
.zc8a75sec-list li:last-child { border-bottom: none; }
.zc8a75certs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 1.75rem;
}
.zc8a75cert {
    text-align: center;
    padding: var(--card-pad) 1rem;
    border-radius: var(--radius);
    border: var(--border-width) solid var(--border);
    background: var(--surface);
}
.zc8a75cert i { font-size: 1.6rem; color: var(--brand); margin-bottom: 0.45rem; }
.zc8a75cert h4 { font-size: 0.92rem; margin: 0 0 0.2rem; }
.zc8a75cert p { font-size: 0.78rem; color: var(--text-muted); margin: 0; }

/* FAQ */
.zc8a75faq {
    padding: var(--section-pad-y) 0;
    background: linear-gradient(180deg, #fff7ed 0%, var(--surface) 100%);
    overflow-x: clip;
}
.zc8a75faq .accordion {
    max-width: 800px;
    margin: 0 auto;
    --bs-accordion-border-width: 0;
    --bs-accordion-border-radius: var(--radius);
    --bs-accordion-inner-border-radius: var(--radius);
    --bs-accordion-btn-padding-x: 1rem;
    --bs-accordion-btn-padding-y: 0.9rem;
    --bs-accordion-body-padding-x: 1rem;
    --bs-accordion-body-padding-y: 0.85rem;
}
.zc8a75faq .accordion-item {
    border: var(--border-width) solid var(--border) !important;
    border-radius: var(--radius) !important;
    margin-bottom: 0.5rem;
    overflow: hidden;
    background: var(--surface-card);
}
.zc8a75faq .accordion-item:last-child { margin-bottom: 0; }
.zc8a75faq .accordion-button {
    font-weight: 600;
    font-size: 0.92rem;
    line-height: 1.45;
    padding: 0.9rem 1rem;
    background: var(--surface-card);
    box-shadow: none !important;
    border-radius: 0 !important;
}
.zc8a75faq .accordion-button:not(.collapsed) {
    color: var(--brand-deep);
    background: rgba(249, 115, 22, 0.06);
    border-bottom: var(--border-width) solid var(--border);
}
.zc8a75faq .accordion-body {
    font-size: 0.88rem;
    color: var(--text-muted);
    padding: 0.85rem 1rem 1rem;
    line-height: 1.65;
    word-break: break-word;
}

/* 资讯 */
.zc8a75news {
    padding: var(--section-pad-y) 0;
    background: var(--surface-card);
    overflow-x: clip;
}
.zc8a75news-head {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-end;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}
.zc8a75news-head .zc8a75section-title { text-align: left; margin-bottom: 0; }
.zc8a75btn-news-more {
    border: var(--border-width) solid var(--brand) !important;
    color: var(--brand-dark) !important;
    white-space: nowrap;
}
.zc8a75news-grid > .col {
    display: flex;
}
.zc8a75news-card {
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--surface-card);
    height: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s, border-color 0.2s;
}
.zc8a75news-card:hover {
    box-shadow: var(--shadow);
    border-color: var(--border-warm) !important;
}
.zc8a75thumb-home {
    width: 100%;
    height: 120px;
    object-fit: cover;
    flex-shrink: 0;
}
.zc8a75news-card .card-body {
    padding: 0.75rem 0.85rem;
    flex: 1;
    min-width: 0;
}
.zc8a75news-card h3 {
    font-size: 0.9rem;
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.zc8a75news-card h3 a { color: var(--text); }
.zc8a75news-card h3 a:hover { color: var(--brand-dark); }

/* CTA */
.zc8a75cta {
    padding: 2.75rem 0;
    background: linear-gradient(120deg, var(--brand-deep), var(--blue), var(--brand));
    color: #fff;
    text-align: center;
}
.zc8a75cta h2 { font-size: clamp(1.25rem, 3vw, 1.85rem); font-weight: 800; margin: 0 0 0.5rem; }
.zc8a75cta p { opacity: 0.92; margin: 0 0 1.25rem; font-size: 0.95rem; }
.zc8a75cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.65rem; }
.zc8a75cta .zc8a75btn-ghost { border-color: rgba(255,255,255,0.5); }

/* 页脚 */
.zc8a75footer {
    background: var(--dark);
    color: rgba(238, 240, 246, 0.72);
    padding: 3rem 0 1.5rem;
}
.zc8a75footer h5 { color: #fff; font-size: 0.94rem; font-weight: 600; margin-bottom: 0.85rem; }
.zc8a75footer a { color: rgba(238, 240, 246, 0.72); font-size: 0.86rem; }
.zc8a75footer a:hover { color: var(--gold); }
.zc8a75footer-links { list-style: none; padding: 0; margin: 0; }
.zc8a75footer-links li { margin-bottom: 0.45rem; }
.zc8a75friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem 1rem;
    list-style: none;
    padding: 0;
    margin: 0;
}
.zc8a75footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: 2rem;
    padding-top: 1.35rem;
    text-align: center;
    font-size: 0.84rem;
}
.zc8a75footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem 2rem;
    margin-bottom: 1.75rem;
    align-items: start;
}
.zc8a75footer-brand p {
    margin-top: 0.85rem;
    font-size: 0.88rem;
    line-height: 1.6;
    max-width: 280px;
}
.zc8a75register-cta { text-align: center; margin-top: 1.75rem; }

/* ========== 内页 ========== */
body.zc8a75inner { background: #eef1f6; }
body.zc8a75inner .zc8a75navbar {
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 20px rgba(12, 15, 26, 0.04);
}
body.zc8a75inner .zc8a75nav-link {
    color: var(--text) !important;
}
body.zc8a75inner .zc8a75nav-link:hover,
body.zc8a75inner .zc8a75nav-item.active .zc8a75nav-link {
    color: var(--brand-dark) !important;
    background: rgba(249, 115, 22, 0.1);
}
body.zc8a75inner .navbar-toggler-icon { filter: none; }
body.zc8a75inner .navbar-collapse {
    background: #fff;
    border: 1px solid var(--border);
}
@media (min-width: 992px) {
    body.zc8a75inner .navbar-collapse { background: transparent; border: none; }
}

.zc8a75page-hero {
    background: linear-gradient(125deg, var(--dark), #1e3a5f 40%, var(--brand-deep));
    color: #fff;
    padding: 1.75rem 0;
}
.zc8a75page-hero h1 {
    font-size: clamp(1.2rem, 3vw, 1.7rem);
    font-weight: 700;
    margin: 0 0 0.35rem;
    word-break: break-word;
    line-height: 1.35;
}
.zc8a75page-hero p {
    margin: 0;
    opacity: 0.88;
    font-size: 0.92rem;
    word-break: break-word;
}
.zc8a75article-content table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.zc8a75article-content pre,
.zc8a75article-content iframe {
    max-width: 100%;
}

.zc8a75inner-main {
    padding: 2rem 0 3rem;
    overflow-x: clip;
}
.zc8a75content-card {
    background: var(--surface-card);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.zc8a75content-card .card-body { padding: var(--card-pad); }
.zc8a75sidebar-card {
    background: var(--surface-card);
    border: var(--border-width) solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}
.zc8a75sidebar-card .card-body {
    padding: var(--card-pad);
}
.zc8a75sidebar-card .card-body h3 {
    font-size: 1rem;
    font-weight: 700;
    padding-bottom: 0.55rem;
    margin-bottom: 0.75rem;
    border-bottom: 2px solid var(--brand);
}
.zc8a75thumb-cover {
    width: 100%;
    max-height: 220px;
    object-fit: cover;
    border-radius: var(--radius-sm);
}
@media (min-width: 768px) {
    .zc8a75thumb-cover { max-width: 360px; height: 200px; width: auto; }
}
.zc8a75article-content { overflow-wrap: break-word; line-height: 1.75; }
.zc8a75article-content img { max-width: 100%; height: auto; }
.zc8a75thumb-list,
.zc8a75thumb-related { border-radius: var(--radius-sm); }
.zc8a75py-5 { padding: 2rem 0; }
.zc8a75mb-0 { margin-bottom: 0; }
.zc8a75mt-4 { margin-top: 1.5rem; }
.zc8a75text-center { text-align: center; }

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

/* 响应式 */
@media (max-width: 991.98px) {
    .zc8a75hero {
        padding: 2rem 0 1.75rem;
    }
    .zc8a75hero-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: center;
    }
    .zc8a75hero-copy { min-width: 0; }
    .zc8a75hero-lead {
        margin-left: auto;
        margin-right: auto;
        max-width: 100%;
    }
    .zc8a75hero-chip { margin-left: auto; margin-right: auto; }
    .zc8a75hero-pills,
    .zc8a75hero-actions { justify-content: center; }
    .zc8a75hero-visual {
        order: -1;
        margin-bottom: 0.25rem;
    }
    .zc8a75hero-img { max-width: 200px; margin: 0 auto; }
    .zc8a75about-grid { grid-template-columns: 1fr; }
    .zc8a75product-row { grid-template-columns: repeat(2, 1fr); }
    .zc8a75feature-grid { grid-template-columns: 1fr; }
    .zc8a75feature-card.feature-lg { grid-column: span 1; }
    .zc8a75timeline { grid-template-columns: repeat(2, 1fr); }
    .zc8a75timeline::before { display: none; }
    .zc8a75stats-grid,
    .zc8a75download-grid { grid-template-columns: 1fr; }
    .zc8a75security-grid { grid-template-columns: repeat(2, 1fr); }
    .zc8a75section-head { margin-bottom: 1.5rem; }
}

@media (max-width: 767.98px) {
    :root {
        --section-pad-y: 2rem;
        --card-pad: 1rem;
    }
    .zc8a75container.container {
        padding-left: max(12px, env(safe-area-inset-left, 0px));
        padding-right: max(12px, env(safe-area-inset-right, 0px));
    }
    .zc8a75container .row {
        --bs-gutter-x: 0.75rem;
        --bs-gutter-y: 0.75rem;
    }
    .zc8a75hero-title {
        font-size: clamp(1.45rem, 6.5vw, 2rem);
        line-height: 1.2;
    }
    .zc8a75hero-lead { font-size: 0.9rem; }
    .zc8a75product-row { grid-template-columns: 1fr; }
    .zc8a75feature-grid,
    .zc8a75feature-card.feature-lg {
        grid-template-columns: 1fr;
        grid-column: span 1;
    }
    .zc8a75timeline,
    .zc8a75security-grid,
    .zc8a75certs { grid-template-columns: 1fr; }
    .zc8a75stats-grid { grid-template-columns: repeat(2, 1fr); }
    .zc8a75stat-value { font-size: clamp(1.35rem, 5vw, 1.75rem); }
    .zc8a75hero-actions {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        max-width: 360px;
        margin-left: auto;
        margin-right: auto;
    }
    .zc8a75hero-actions .zc8a75btn {
        width: 100%;
        max-width: 100%;
    }
    .zc8a75hero-stats {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        max-width: 360px;
        margin-left: auto;
        margin-right: auto;
    }
    .zc8a75hero-stat {
        padding: 0.6rem 0.75rem;
        background: rgba(255, 255, 255, 0.06);
        border-radius: var(--radius-sm);
    }
    .zc8a75trust-inner {
        flex-direction: column;
        align-items: center;
        gap: 0.65rem;
        text-align: center;
    }
    .zc8a75news-head {
        flex-direction: column;
        align-items: stretch;
    }
    .zc8a75news-head .zc8a75btn,
    .zc8a75btn-news-more {
        width: 100%;
        max-width: 100%;
        text-align: center;
        justify-content: center;
    }
    .zc8a75news-grid > .col {
        flex: 0 0 100%;
        max-width: 100%;
        width: 100%;
    }
    .zc8a75cta {
        padding: 2rem 0;
    }
    .zc8a75cta-actions {
        flex-direction: column;
        align-items: center;
        padding: 0 0.5rem;
    }
    .zc8a75cta-actions .zc8a75btn {
        width: 100%;
        max-width: 320px;
    }
    .zc8a75footer {
        padding: 2rem 0 1.25rem;
    }
    .zc8a75footer-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
        text-align: center;
    }
    .zc8a75footer-brand p {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }
    .zc8a75friend-links {
        justify-content: center;
    }
    .zc8a75faq .accordion-button {
        font-size: 0.88rem;
        white-space: normal;
        line-height: 1.45;
        padding: 0.85rem 2.25rem 0.85rem 0.9rem;
    }
    .zc8a75inner-main.zc8a75py-5,
    .zc8a75py-5 {
        padding-top: 1.25rem !important;
        padding-bottom: 1.75rem !important;
    }
    .zc8a75page-hero {
        padding: 1.15rem 0;
    }
    .zc8a75content-card .card-body,
    .zc8a75sidebar-card .card-body {
        padding: var(--card-pad);
    }
    article.zc8a75content-card .card-body.p-4 {
        padding: var(--card-pad) !important;
    }
    .listbox .e2 li .col-4,
    .listbox .e2 li .col-8 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    .listbox .e2 li .row {
        --bs-gutter-y: 0.65rem;
    }
    .listbox .e2 li .zc8a75thumb-list {
        width: 100% !important;
        height: auto !important;
        max-height: 200px;
        aspect-ratio: 16 / 9;
        object-fit: cover;
    }
    .listbox .e2 li h2.h5 {
        font-size: 1rem;
        line-height: 1.4;
    }
    article .card-body header .small.text-muted {
        display: flex;
        flex-direction: column;
        gap: 0.3rem;
    }
    article .card-body header .small.text-muted .me-3 {
        margin-right: 0 !important;
    }
    article .card-body header h1.h3 {
        font-size: 1.15rem;
        line-height: 1.4;
        word-break: break-word;
    }
    .zc8a75thumb-cover {
        max-width: 100%;
        width: 100%;
        height: auto;
        max-height: 220px;
    }
    aside .d-flex.gap-2 {
        flex-direction: row;
        align-items: flex-start;
    }
    aside .d-flex.gap-2 a:first-child {
        width: 72px !important;
        flex: 0 0 72px !important;
    }
    .zc8a75inner-main .card.shadow-sm.mt-4 .d-flex.flex-column.flex-md-row {
        flex-direction: column !important;
        gap: 0.75rem;
    }
    .pagebar .pagelist {
        gap: 0.35rem;
    }
    .pagebar .pagelist a,
    .pagebar .pagelist span {
        padding: 0.35rem 0.55rem;
        font-size: 0.85rem;
    }
}

@media (max-width: 575.98px) {
    .zc8a75hero { padding: 1.5rem 0 1.25rem; }
    .zc8a75hero-img { max-width: 170px; }
    .zc8a75hero-pill { font-size: 0.7rem; }
    .zc8a75btn {
        font-size: 0.88rem;
        padding: 0.65rem 1.1rem;
    }
    .zc8a75stats-grid { grid-template-columns: 1fr; }
    .zc8a75stat-box { min-height: auto; }
    .zc8a75dl-head {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    .zc8a75timeline-item { padding: 0.65rem 0.4rem; }
    .zc8a75section-title { font-size: 1.35rem; }
    .zc8a75footer-bottom p {
        font-size: 0.8rem;
        line-height: 1.6;
        padding: 0 0.25rem;
    }
}