/* ==========================================================================
   汉魏优选 · 业务详情页统一视觉系统
   --------------------------------------------------------------------------
   设计目标（针对老站缺点的改进）：
   1. 品牌一致性 —— 老站每页内联 400 行 CSS 且配色各异（web 蓝 / community 青 /
      groupbuy 绿），新站统一为「靛蓝主色 + 琥珀强调色」，全站一个视觉语言。
   2. 实力可视化 —— 数据条 / 交付保障 / 资质背书，让客户一眼看到能力。
   3. 转化强化 —— 套餐推荐位高亮、多处 CTA、FAQ 消除决策顾虑。
   4. 性能与移动优先 —— 单一 CSS 文件（不再每页内联）、响应式、纯 CSS 交互。
   ========================================================================== */

:root {
    --hw-primary: #1e40af;
    --hw-primary-dark: #1e3a8a;
    --hw-primary-light: #3b82f6;
    --hw-accent: #f59e0b;
    --hw-accent-dark: #d97706;
    --hw-ink: #0f172a;
    --hw-body: #475569;
    --hw-muted: #64748b;
    --hw-line: #e2e8f0;
    --hw-bg: #f8fafc;
    --hw-white: #ffffff;
    --hw-radius: 16px;
    --hw-shadow: 0 4px 20px rgba(15, 23, 42, .08);
    --hw-shadow-lg: 0 16px 48px rgba(15, 23, 42, .12);
    --hw-max: 1200px;
}

/* ---------- 页面头部（Banner） ---------- */
.biz-hero {
    position: relative;
    padding: 72px 0 64px;
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 55%, #0ea5e9 100%);
    color: #fff;
    overflow: hidden;
}
.biz-hero::after {
    content: '';
    position: absolute;
    right: -120px;
    top: -120px;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .08);
}
.biz-hero-inner {
    max-width: var(--hw-max);
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 2;
}
.biz-crumb {
    font-size: 13px;
    opacity: .85;
    margin-bottom: 18px;
}
.biz-crumb a { color: #fff; text-decoration: none; }
.biz-crumb a:hover { text-decoration: underline; }
.biz-hero h1 {
    font-size: 42px;
    font-weight: 800;
    letter-spacing: -.5px;
    margin: 0 0 16px;
    line-height: 1.25;
}
.biz-hero-sub {
    font-size: 17px;
    line-height: 1.9;
    opacity: .92;
    max-width: 760px;
    margin: 0 0 28px;
}
.biz-hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.biz-hero-tags span {
    background: rgba(255, 255, 255, .16);
    border: 1px solid rgba(255, 255, 255, .28);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
}
.biz-hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 通用按钮 ---------- */
.hw-btn {
    display: inline-block;
    padding: 13px 30px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all .25s;
}
.hw-btn-accent { background: var(--hw-accent); color: #fff; }
.hw-btn-accent:hover { background: var(--hw-accent-dark); transform: translateY(-2px); }
.hw-btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.6); }
.hw-btn-ghost:hover { background: rgba(255,255,255,.14); }
.hw-btn-primary { background: var(--hw-primary); color: #fff; }
.hw-btn-primary:hover { background: var(--hw-primary-dark); transform: translateY(-2px); }
.hw-btn-outline { background: #fff; color: var(--hw-primary); border-color: var(--hw-primary); }
.hw-btn-outline:hover { background: var(--hw-primary); color: #fff; }

/* ---------- 区块 ---------- */
.biz-section { padding: 68px 0; }
.biz-section-alt { background: var(--hw-bg); }
.biz-wrap { max-width: var(--hw-max); margin: 0 auto; padding: 0 24px; }
.biz-head { text-align: center; margin-bottom: 44px; }
.biz-head h2 {
    font-size: 30px;
    font-weight: 800;
    color: var(--hw-ink);
    margin: 0 0 12px;
}
.biz-head p { color: var(--hw-muted); font-size: 15px; margin: 0; }
.biz-head::after {
    content: '';
    display: block;
    width: 56px;
    height: 4px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--hw-primary), var(--hw-accent));
    margin: 18px auto 0;
}

/* ---------- 实力数据条 ---------- */
.biz-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-top: -46px;
    position: relative;
    z-index: 5;
    max-width: var(--hw-max);
    margin-left: auto;
    margin-right: auto;
    padding: 0 24px;
}
.biz-stat {
    background: #fff;
    border-radius: var(--hw-radius);
    padding: 26px 18px;
    text-align: center;
    box-shadow: var(--hw-shadow-lg);
}
.biz-stat-num {
    font-size: 38px;
    font-weight: 800;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--hw-primary), var(--hw-accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.biz-stat-label { font-size: 14px; color: var(--hw-muted); margin-top: 6px; }

/* ---------- 服务介绍 ---------- */
.biz-intro {
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    gap: 44px;
    align-items: center;
}
.biz-intro h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--hw-primary);
    margin: 0 0 16px;
}
.biz-intro p {
    font-size: 15px;
    line-height: 2;
    color: var(--hw-body);
    margin: 0 0 14px;
}
.biz-intro-list { list-style: none; margin: 0; padding: 0; }
.biz-intro-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 12px;
    font-size: 15px;
    color: var(--hw-body);
}
.biz-intro-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    border-radius: 50%;
    background: rgba(30, 64, 175, .1);
    color: var(--hw-primary);
    font-size: 12px;
    font-weight: 700;
}

/* ---------- 特点 / 模块卡片 ---------- */
.biz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 22px;
}
.biz-card {
    background: #fff;
    border: 1px solid var(--hw-line);
    border-radius: var(--hw-radius);
    padding: 28px 24px;
    transition: all .3s;
}
.biz-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--hw-shadow-lg);
    border-color: rgba(30, 64, 175, .3);
}
.biz-card-icon {
    width: 54px;
    height: 54px;
    border-radius: 14px;
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin-bottom: 16px;
}
.biz-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--hw-ink);
    margin: 0 0 10px;
}
.biz-card p {
    font-size: 14px;
    line-height: 1.85;
    color: var(--hw-muted);
    margin: 0;
}

/* ---------- 业务流程（横向步骤） ---------- */
.biz-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    counter-reset: step;
}
.biz-step {
    position: relative;
    background: #fff;
    border-radius: var(--hw-radius);
    padding: 30px 22px;
    text-align: center;
    border: 1px solid var(--hw-line);
}
.biz-step-no {
    width: 44px;
    height: 44px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--hw-primary), var(--hw-primary-light));
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    line-height: 44px;
}
.biz-step h3 { font-size: 16px; font-weight: 700; margin: 0 0 8px; color: var(--hw-ink); }
.biz-step p { font-size: 13px; line-height: 1.8; color: var(--hw-muted); margin: 0; }

/* ---------- 服务套餐 ---------- */
.biz-packages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 24px;
    align-items: stretch;
}
.biz-package {
    background: #fff;
    border: 2px solid var(--hw-line);
    border-radius: 20px;
    padding: 34px 28px;
    display: flex;
    flex-direction: column;
    transition: all .3s;
    position: relative;
}
.biz-package:hover { box-shadow: var(--hw-shadow-lg); }
.biz-package.recommended {
    border-color: var(--hw-primary);
    box-shadow: var(--hw-shadow-lg);
    transform: scale(1.03);
}
.biz-pkg-badge {
    position: absolute;
    top: -13px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(90deg, var(--hw-accent), var(--hw-accent-dark));
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 5px 18px;
    border-radius: 999px;
    white-space: nowrap;
}
.biz-package h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--hw-ink);
    margin: 0 0 6px;
    text-align: center;
}
.biz-pkg-price {
    text-align: center;
    margin: 14px 0 6px;
    color: var(--hw-primary);
}
.biz-pkg-price b { font-size: 34px; font-weight: 800; }
.biz-pkg-price span { font-size: 14px; color: var(--hw-muted); margin-left: 4px; }
.biz-pkg-list {
    list-style: none;
    margin: 22px 0 26px;
    padding: 0;
    flex: 1;
}
.biz-pkg-list li {
    position: relative;
    padding: 8px 0 8px 26px;
    font-size: 14px;
    color: var(--hw-body);
    border-bottom: 1px dashed var(--hw-line);
}
.biz-pkg-list li:last-child { border-bottom: none; }
.biz-pkg-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #16a34a;
    font-weight: 700;
}
.biz-package .hw-btn { display: block; text-align: center; }

/* ---------- FAQ（纯 CSS 手风琴） ---------- */
.biz-faq { max-width: 880px; margin: 0 auto; }
.biz-faq details {
    background: #fff;
    border: 1px solid var(--hw-line);
    border-radius: 12px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: all .25s;
}
.biz-faq details[open] { border-color: rgba(30, 64, 175, .35); box-shadow: var(--hw-shadow); }
.biz-faq summary {
    padding: 18px 22px;
    font-size: 15px;
    font-weight: 600;
    color: var(--hw-ink);
    cursor: pointer;
    list-style: none;
    position: relative;
    padding-right: 52px;
}
.biz-faq summary::-webkit-details-marker { display: none; }
.biz-faq summary::after {
    content: '+';
    position: absolute;
    right: 22px;
    top: 16px;
    font-size: 22px;
    color: var(--hw-primary);
    font-weight: 700;
}
.biz-faq details[open] summary::after { content: '−'; }
.biz-faq .faq-a {
    padding: 0 22px 20px;
    font-size: 14px;
    line-height: 1.9;
    color: var(--hw-body);
}

/* ---------- 底部 CTA ---------- */
.biz-cta {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
    color: #fff;
    padding: 62px 0;
    text-align: center;
}
.biz-cta h2 { font-size: 28px; font-weight: 800; margin: 0 0 12px; }
.biz-cta p { opacity: .85; margin: 0 0 28px; font-size: 15px; }
.biz-cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
    .biz-intro { grid-template-columns: 1fr; gap: 28px; }
    .biz-package.recommended { transform: none; }
}
@media (max-width: 640px) {
    .biz-hero { padding: 52px 0 48px; }
    .biz-hero h1 { font-size: 28px; }
    .biz-section { padding: 46px 0; }
    .biz-head h2 { font-size: 23px; }
    .biz-stat-num { font-size: 30px; }
    .biz-stats { margin-top: -32px; }
}