/* ============================================
   index.css - 首页专属样式
   品牌主色：#fe0c22
   ============================================ */

/* Hero 背景大图 + 渐变遮罩确保文字可读 */
.hero {
    padding-top: var(--header-height);
    background: 
        linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.6)),
        url('../images/hero-bg.jpg') center/cover no-repeat;
    color: #fff;
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}
/* 保证文字在任何背景下都清晰 */
.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(ellipse at 20% 50%, rgba(254,12,34,0.2) 0%, transparent 60%);
    pointer-events: none;
}
.hero .container { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-content { animation: fadeInUp 0.8s ease; }
.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    color: #fff;
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 20px;
    border: 1px solid rgba(255,255,255,0.2);
}
.hero h1 {
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 20px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.hero h1 span { color: #fff; }
.hero-subtitle {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.9);
    line-height: 1.8;
    margin-bottom: 30px;
    max-width: 500px;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }

/* 英雄图右侧四宫格 */
.hero-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 16px;
    animation: fadeInUp 1s ease 0.2s both;
}
.hero-card {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(12px);
    border-radius: 12px;
    padding: 24px 20px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.2);
    transition: var(--transition);
    color: #fff;
}
.hero-card:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-5px);
    border-color: rgba(255,255,255,0.4);
}
.hero-card .icon { font-size: 2.2rem; margin-bottom: 10px; }
.hero-card h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 4px; }
.hero-card p { font-size: 0.8rem; color: rgba(255,255,255,0.8); }
/* 材料卡片弱化 */
.hero-card.material { position: relative; border-color: rgba(255,255,255,0.15); background: rgba(255,255,255,0.06); }
.hero-card.material::after {
    content: '基础';
    position: absolute;
    top: 8px; right: 12px;
    font-size: 0.7rem;
    background: rgba(255,255,255,0.25);
    padding: 2px 10px;
    border-radius: 10px;
    color: rgba(255,255,255,0.9);
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- 核心主张条 ---------- */
.core-claim { background: #f9f9f9; padding: 30px 0; text-align: center; border-bottom: 1px solid #eee; }
.core-claim .claim-text { font-size: 1.3rem; font-weight: 600; color: #222; }
.core-claim .claim-text em { color: var(--color-primary); font-style: normal; }
.core-claim .claim-sub { font-size: 0.9rem; color: var(--color-text-light); margin-top: 6px; }

/* ---------- 四大支柱区 ---------- */
.pillars { background: #fff; }
.pillars-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.pillar-card {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 36px 24px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.pillar-card:hover { box-shadow: 0 12px 28px rgba(0,0,0,0.1); transform: translateY(-6px); border-color: transparent; }
.pillar-card .pillar-icon {
    width: 64px; height: 64px; margin: 0 auto 20px;
    background: rgba(254,12,34,0.06);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem;
    transition: var(--transition);
}
.pillar-card:hover .pillar-icon { background: var(--color-primary); color: #fff; }
.pillar-card h3 { font-size: 1.15rem; color: #222; margin-bottom: 10px; font-weight: 700; }
.pillar-card p { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.7; }
/* 核心能力的视觉强调 */
.pillar-card.featured { border-top: 4px solid var(--color-primary); }
/* 材料卡片弱化 */
.pillar-card.material-card { border-top: 4px solid #e0e0e0; background: #fafafa; }
.pillar-card.material-card .pillar-icon { background: #f1f1f1; }
.pillar-tag { display: inline-block; font-size: 0.7rem; padding: 3px 12px; border-radius: 50px; margin-top: 12px; font-weight: 600; }
.pillar-tag.highlight { background: rgba(254,12,34,0.1); color: var(--color-primary); }
.pillar-tag.normal { background: #eee; color: #777; }

/* ---------- 服务流程 ---------- */
.process { background: #f9f9f9; }
.process-steps {
    display: flex; justify-content: space-between; align-items: flex-start;
    position: relative; flex-wrap: wrap; gap: 20px;
}
.process-steps::before {
    content: ''; position: absolute; top: 36px; left: 60px; right: 60px;
    height: 2px; background: #e0e0e0; z-index: 0;
}
.process-step { flex: 1; min-width: 140px; text-align: center; position: relative; z-index: 1; }
.process-step .step-number {
    width: 72px; height: 72px; border-radius: 50%;
    background: #fff; border: 3px solid #e0e0e0;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 16px; font-size: 1.5rem; font-weight: 700;
    color: var(--color-primary); transition: var(--transition);
}
.process-step:hover .step-number { border-color: var(--color-primary); background: var(--color-primary); color: #fff; }
.process-step h4 { font-size: 0.95rem; color: #222; margin-bottom: 6px; }
.process-step p { font-size: 0.8rem; color: var(--color-text-light); }
.process-step .step-arrow { position: absolute; top: 28px; right: -20px; font-size: 1.2rem; color: #ccc; z-index: 0; }

/* ---------- 案例展示 ---------- */
.cases { background: #fff; }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { border-radius: 12px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.06); transition: var(--transition); background: #fff; }
.case-card:hover { box-shadow: 0 12px 28px rgba(0,0,0,0.12); transform: translateY(-4px); }
.case-card .case-img {
    height: 200px; background: #e8ecf1;
    display: flex; align-items: center; justify-content: center;
    color: #aaa; font-size: 0.9rem;
    position: relative; overflow: hidden;
}
.case-card .case-img .case-tag {
    position: absolute; top: 12px; left: 12px;
    background: var(--color-primary); color: #fff;
    padding: 4px 14px; border-radius: 50px;
    font-size: 0.75rem; font-weight: 600;
}
.case-card .case-body { padding: 20px; }
.case-card .case-body h4 { font-size: 1.05rem; color: #222; margin-bottom: 8px; }
.case-card .case-body p { font-size: 0.85rem; color: var(--color-text-light); line-height: 1.6; }
.case-card .case-body .case-meta { display: flex; gap: 16px; margin-top: 12px; font-size: 0.8rem; color: var(--color-text-lighter); }
.case-card .case-body .case-meta span::before { content: '●'; margin-right: 6px; color: var(--color-primary); font-size: 0.5rem; vertical-align: middle; }

/* ---------- 信任区 ---------- */
.trust { background: linear-gradient(180deg, #f9f9f9 0%, #fff 100%); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.trust-item { padding: 30px 20px; }
.trust-item .trust-num { font-size: 2.5rem; font-weight: 700; color: var(--color-primary); margin-bottom: 6px; }
.trust-item .trust-label { font-size: 0.9rem; color: var(--color-text-light); }
.trust-bar {
    display: flex; align-items: center; gap: 20px;
    margin-top: 40px; padding: 30px;
    background: #fff; border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.trust-bar .trust-logo-area {
    width: 120px; height: 60px;
    background: #f5f5f5; border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    color: #999; font-size: 0.8rem; flex-shrink: 0;
}
.trust-bar p { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.6; }
.trust-bar p strong { color: #222; }

/* ---------- CTA ---------- */
.cta-section { background: var(--color-primary); color: #fff; text-align: center; padding: 60px 0; }
.cta-section h2 { font-size: 1.8rem; margin-bottom: 16px; }
.cta-section p { color: rgba(255,255,255,0.85); margin-bottom: 24px; font-size: 1rem; }
.cta-section .btn { font-size: 1.1rem; padding: 16px 44px; background: #fff; color: var(--color-primary); }
.cta-section .btn:hover { background: #f5f5f5; }

/* ---------- 响应式 ---------- */
@media (max-width: 992px) {
    .hero .container { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { grid-template-columns: 1fr 1fr; max-width: 400px; margin: 0 auto; }
    .hero h1 { font-size: 2rem; }
    .pillars-grid { grid-template-columns: 1fr 1fr; }
    .cases-grid { grid-template-columns: 1fr 1fr; }
    .trust-grid { grid-template-columns: 1fr 1fr; }
    .process-steps::before { display: none; }
}
@media (max-width: 600px) {
    .hero {
        min-height: auto;
        padding: calc(var(--header-height) + 30px) 0 50px; /* 增加下内边距，确保与下面内容有间隔 */
    }
    .hero .container { gap: 30px; }
    .hero h1 { font-size: 1.6rem; }
    .hero-visual { grid-template-columns: 1fr 1fr; gap: 10px; max-width: 100%; margin: 0; }
    .hero-card { padding: 16px 12px; }
    .hero-btns { flex-direction: column; width: 100%; }
    .hero-btns .btn { width: 100%; text-align: center; }

    .pillars-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    .trust-grid { grid-template-columns: 1fr; }

    .process-steps { flex-direction: column; align-items: center; }
    .process-step .step-arrow { display: none; }

    .trust-bar { flex-direction: column; text-align: center; }

    /* 核心主张文字缩小 */
    .core-claim .claim-text { font-size: 1.1rem; }
}