/* 帮助中心 */
#page-bangzhu {
    padding-bottom: 100px;
}

.help-hero {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 40px;
    padding-top: 8px;
}
.help-hero h1 {
    font-size: 40px;
    font-weight: 800;
    margin: 0 0 12px 0;
    line-height: 1.2;
}
.help-hero-lead {
    font-size: 18px;
    color: var(--ink-light);
    line-height: 1.6;
    margin: 0;
}

.help-quick-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
}
/* 与顶栏 / sketch-box 同系的玻璃条，避免「孤立白药丸」观感 */
.help-quick-links--bar {
    justify-content: center;
    gap: 10px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    padding: 14px 18px;
    background: var(--surface-glass);
    backdrop-filter: blur(18px) saturate(1.45);
    -webkit-backdrop-filter: blur(18px) saturate(1.45);
    border: 1px solid var(--stroke-glass);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sketch);
}
.help-quick-links a {
    display: inline-flex;
    align-items: center;
    padding: 10px 18px;
    font-size: 15px;
    font-weight: 700;
    border: 1px solid rgba(255, 255, 255, 0.65);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.42);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.75);
    color: var(--ink);
    transition: var(--transition);
}
.help-quick-links a:hover {
    background: rgba(255, 255, 255, 0.88);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
    box-shadow:
        0 10px 28px rgba(99, 102, 241, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

.help-toc {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 16px;
    margin-bottom: 40px;
    padding: 18px 22px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sketch);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}
.help-toc a {
    font-size: 15px;
    font-weight: 800;
    color: var(--ink);
    text-decoration: underline;
    text-underline-offset: 3px;
}
.help-toc a:hover {
    color: var(--marker-blue);
}

.help-section {
    margin-bottom: 48px;
    scroll-margin-top: var(--nav-stack-clearance, 104px);
}
.help-section-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.help-section-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--stroke-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(circle at 30% 28%, rgba(255, 255, 255, 0.55), transparent 55%),
        linear-gradient(145deg, rgba(129, 140, 248, 0.22), rgba(56, 189, 248, 0.18));
    box-shadow: var(--shadow-sketch);
    color: var(--signal);
    flex-shrink: 0;
}
.help-section-icon i {
    width: 24px;
    height: 24px;
}
.help-section h2 {
    font-size: 26px;
    font-weight: 800;
    margin: 0;
    letter-spacing: -0.02em;
}
.help-faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.help-faq-item {
    padding: 20px 22px;
    background: transparent;
    text-align: left;
}
.help-faq-q {
    font-size: 18px;
    font-weight: 800;
    margin: 0 0 10px 0;
    line-height: 1.4;
    display: flex;
    gap: 10px;
    align-items: flex-start;
}
.help-faq-q::before {
    content: 'Q';
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, var(--accent-2), var(--accent));
    border: none;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.25);
}
.help-faq-a {
    margin: 0;
    padding-left: 38px;
    font-size: 16px;
    line-height: 1.65;
    color: var(--ink-light);
}
.help-faq-a strong {
    color: var(--ink);
}
.help-faq-a a {
    font-weight: 800;
    color: var(--ink);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.help-note {
    max-width: 720px;
    margin: 48px auto 0;
    padding: 18px 22px;
    font-size: 15px;
    color: var(--ink-light);
    line-height: 1.55;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: #fff;
    box-shadow: var(--shadow-sketch);
}

.help-section--single {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.help-faq-item {
    scroll-margin-top: var(--nav-stack-clearance, 104px);
}

@media (max-width: 640px) {
    #page-bangzhu {
        padding-bottom: 72px;
    }
    .help-hero h1 {
        font-size: 28px;
    }
    .help-hero-lead {
        font-size: 16px;
    }
    .help-quick-links {
        gap: 8px;
        margin-bottom: 32px;
    }
    .help-quick-links--bar {
        padding: 12px 14px;
    }
    .help-quick-links a {
        padding: 9px 14px;
        font-size: 14px;
    }
    .help-section h2 {
        font-size: 22px;
    }
    .help-faq-list {
        gap: 12px;
    }
    .help-faq-item {
        padding: 16px 14px;
        scroll-margin-top: max(96px, var(--nav-stack-clearance, 104px));
    }
    .help-faq-q {
        font-size: 16px;
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .help-faq-q::before {
        width: 26px;
        height: 26px;
        font-size: 12px;
    }
    .help-faq-a {
        font-size: 15px;
        padding-left: 0;
        line-height: 1.7;
    }
}