/* ============================================================
   Qupper's Forge 专属样式（参照乐雨丸页面风格）
   ============================================================ */

/* ---------- 页面 Banner ---------- */
.page-banner {
    position: relative;
    padding: calc(var(--nav-height) + 80px) 24px 80px;
    background: var(--bg-darker);
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}
.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(ellipse 72% 48% at 50% -6%, rgba(24, 24, 27, 0.07) 0%, transparent 65%),
        radial-gradient(var(--bg-card) 1px, transparent 1.5px);
    background-size: auto, 26px 26px;
}
.banner-content-simple {
    position: relative;
    max-width: var(--container-max);
    margin: 0 auto;
    z-index: 1;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 24px;
}
.breadcrumb a { color: var(--text-secondary); transition: var(--transition); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb-sep { color: var(--text-muted); }
.breadcrumb-current { color: var(--accent); }

.page-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}
.page-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 640px;
    line-height: 1.7;
}

/* ---------- 通用区块 ---------- */
.section { padding: 100px 0; }
.section-alt { background: var(--bg-section-alt); }
.section-header { text-align: center; margin-bottom: 64px; }
.section-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    color: var(--brand);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 12px;
}
.section-title {
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}
.section-divider {
    width: 48px;
    height: 2px;
    background: var(--accent);
    margin: 0 auto 16px;
    border-radius: 1px;
}
.section-desc {
    font-size: 15px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ---------- 介绍 ---------- */
.qf-intro-layout {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 56px;
    align-items: start;
}
.qf-lead {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 28px;
}
.qf-lead strong { color: var(--accent-light); font-weight: 600; }

.qf-highlights {
    display: flex;
    gap: 32px;
    margin-bottom: 36px;
    padding: 20px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}
.qf-h-item { display: flex; flex-direction: column; }
.qf-h-num,
.qf-h-val {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-mono);
    line-height: 1.2;
}
.qf-h-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.qf-features-list { display: flex; flex-direction: column; gap: 20px; }
.qf-feat { display: flex; align-items: flex-start; gap: 14px; }
.qf-feat-icon {
    width: 38px; height: 38px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(24, 24, 27, 0.08);
    border: 1px solid rgba(24, 24, 27, 0.15);
    border-radius: var(--radius);
    color: var(--accent);
    flex-shrink: 0;
}
.qf-feat-icon svg { width: 18px; height: 18px; }
.qf-feat h4 { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.qf-feat p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* 图片展示 */
.qf-intro-visual {
    background: var(--bg-void);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.qf-visual-img {
    display: block;
    width: 100%;
    height: auto;
}

/* CTA */
.qf-cta {
    text-align: center;
    margin-top: 48px;
}
.qf-cta .btn { margin: 0 6px; }
.qf-note {
    display: block;
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-muted);
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
    .qf-intro-layout { grid-template-columns: 1fr; gap: 36px; }
    .section { padding: 70px 0; }
    .section-header { margin-bottom: 44px; }
}
@media (max-width: 560px) {
    .page-banner { padding: calc(var(--nav-height) + 48px) 20px 48px; }
    .page-subtitle { font-size: 14px; }
    .qf-highlights { gap: 20px; }
}