/* 页面布局：从 style.css 迁移的导航与首页布局规则。 */
.hero-inner, .container-wrapper {
    max-width: 1200px; margin: 0 auto; padding: 0 20px;
}

.hero-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 16px; }
.brand-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
    gap: 16px;
}
.brand-logo {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: block;
    object-fit: contain;
}

.brand-title {
    margin: 0;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.brand-subtitle {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.badge {
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.85rem;
    border: 1px solid var(--border);
    color: var(--primary);
    background: var(--surface);
}

.badge-accent {
    border-color: rgba(37, 99, 235, 0.3);
    color: var(--accent);
    background: rgba(37, 99, 235, 0.12);
}

.nav-container {
    position: sticky;
    top: 0;
    z-index: 99;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 22px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.nav-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}
.user-menu { justify-self: end; grid-column: 3; }
.nav-link { padding: 10px 12px; font-weight: 600; border-radius: 8px; color: var(--primary); }
.nav-link:hover { background: #f3f4f6; color: var(--accent); }
.nav-link.is-active {
    color: var(--accent);
    background: rgba(37, 99, 235, 0.12);
    border: 1px solid rgba(37, 99, 235, 0.3);
}


.nav-link:focus-visible,
.top-bar-link:focus-visible,
.top-bar-user-link:focus-visible,
.top-user-menu__trigger:focus-visible,
.top-user-menu__item:focus-visible,
.top-bar-icon-link:focus-visible,
.nav-search button:focus-visible,
.nav-search input:focus-visible,
.pagination a:focus-visible,
.auth-submit:focus-visible,
.auth-links a:focus-visible {
    outline: 2px solid rgba(200, 29, 37, 0.55);
    outline-offset: 2px;
}
.btn-solid {
    background: var(--accent);
    color: #fff;
    padding: 8px 14px;
    border-radius: 8px;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.btn-ghost {
    color: var(--primary);
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--surface);
}

/* ==========================================================================
   3. 首页/分类页网格布局 (修复变窄核心)
   ========================================================================== */
.container {
    max-width: 1200px;
    margin: 36px auto 48px;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 28px;
}

.container.portal {
    display: block;
}

.portal-home-hero {
    margin-bottom: 28px;
    border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--border));
    background: linear-gradient(130deg, color-mix(in srgb, var(--accent) 12%, #fff) 0%, #fff 70%);
    border-radius: 16px;
    padding: 24px 24px 20px;
    box-shadow: var(--shadow-sm);
}

.portal-home-hero__eyebrow {
    margin: 0 0 8px;
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.portal-home-hero h2 {
    margin: 0;
    font-size: clamp(1.3rem, 2.4vw, 2rem);
    line-height: 1.35;
}

.portal-home-hero__desc {
    margin: 10px 0 14px;
    color: var(--muted);
    max-width: 780px;
}

.portal-home-hero__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.portal-home-hero__chips span {
    border: 1px solid color-mix(in srgb, var(--accent) 26%, var(--border));
    background: #fff;
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 0.84rem;
    color: #334155;
}

.portal-layout {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
}

.portal-main {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.portal-sidebar {
    display: flex;
    flex-direction: column;
    gap: 28px;
}