/* ============ business.php · 品牌画册风格 ============ */
/* ── 页面顶部 Hero 区域渐变背景 ───────────────────────────── */
.page-hero {
    background:
        linear-gradient(135deg,
            rgba(180, 20, 20, 0.22) 0%,
            rgba(220, 50, 50, 0.15) 20%,
            rgba(255, 250, 250, 1) 50%,
            rgba(120, 100, 180, 0.18) 85%,
            rgba(80, 60, 140, 0.25) 100%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
}
.page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, rgba(120, 20, 20, 0.08) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(120, 20, 20, 0.08) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), transparent);
    -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), transparent);
    pointer-events: none;
}
.page-hero::after {
    content: "";
    position: absolute;
    top: -160px;
    right: -120px;
    width: 560px;
    height: 560px;
    background: radial-gradient(circle, rgba(180, 20, 20, 0.22) 0%, transparent 70%);
    pointer-events: none;
}
.page-hero-text {
    position: relative;
    z-index: 1;
}

.biz-tabs-section {
    padding-top: 80px;
    padding-bottom: 140px;
    background: #fff;
}

/* ── 横向章节目录导航 ───────────────────────────── */
.biz-tabs {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 14px;
    margin-bottom: 72px;
    background: transparent;
}
.biz-tab {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-end;
    gap: 6px;
    padding: 24px 28px 24px 28px;
    min-height: 112px;
    background: #fafafa;
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 6px;
    text-align: left;
    cursor: pointer;
    transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
    font-family: inherit;
    overflow: hidden;
    text-decoration: none;
    color: #333;
}
.biz-tab:hover { transform: translateY(-2px); border-color: rgba(0, 0, 0, 0.12); background: #fff; }
.biz-tab:last-child { }
.biz-tab .bt-index {
    position: absolute;
    right: -6px;
    bottom: -16px;
    font-size: 84px;
    font-weight: 200;
    color: rgba(0, 0, 0, 0.06);
    letter-spacing: -0.04em;
    line-height: 1;
    transition: color 0.3s ease, font-weight 0.3s ease, font-size 0.3s ease;
    font-feature-settings: "tnum";
    pointer-events: none;
}
.biz-tab .bt-name {
    position: relative;
    z-index: 1;
    font-size: 18px;
    font-weight: 500;
    color: #1a1a1a;
    line-height: 1.2;
    margin-top: auto;
    letter-spacing: 0.01em;
    white-space: nowrap;
    overflow: visible;
    transition: color 0.3s ease, font-weight 0.3s ease;
}
.biz-tab .bt-arrow {
    font-size: 14px;
    color: rgba(0, 0, 0, 0.25);
    margin-top: 8px;
    transition: all 0.3s ease;
}
.biz-tab:hover .bt-name { color: var(--red-primary); }
.biz-tab:hover .bt-index { color: rgba(205, 24, 24, 0.18); font-weight: 300; }
.biz-tab:hover .bt-arrow { color: var(--red-primary); transform: translateX(4px); }
.biz-tab.is-active { background: #0c0c0c; border-color: #0c0c0c; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15); transform: translateY(-2px); }
.biz-tab.is-active .bt-index { color: rgba(205, 24, 24, 0.5); font-size: 94px; font-weight: 300; }
.biz-tab.is-active .bt-name { color: #fff; font-weight: 600; }
.biz-tab.is-active .bt-arrow { color: var(--red-primary); }
.biz-tab.is-active::after {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: var(--red-primary);
    border-radius: 6px 0 0 6px;
}

/* ── 章节内容面板：三栏画册 ───────────────────────────── */
.biz-tab-panels { position: relative; }
.biz-panel {
    display: none;
    grid-template-columns: 120px 1fr 340px;
    gap: 56px;
    align-items: stretch;
    min-height: 560px;
    padding: 0;
    animation: bizFadeIn 0.5s cubic-bezier(0.2, 0.7, 0.2, 1);
    position: relative;
}
.biz-panel.is-active { display: grid; }

@keyframes bizFadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── 左栏：编号装饰 ── */
.biz-panel-num {
    position: relative;
    padding-top: 8px;
    display: flex;
    flex-direction: column;
}
.bp-num-big {
    font-size: 120px;
    font-weight: 200;
    line-height: 0.95;
    color: #f2f0ee;
    letter-spacing: -0.04em;
    font-feature-settings: "tnum";
    transition: color 0.3s ease;
}
.biz-panel-num:hover .bp-num-big { color: rgba(200, 16, 46, 0.12); }
.bp-num-small {
    margin-top: 16px;
    font-size: 10px;
    letter-spacing: 0.3em;
    color: #999;
    font-weight: 500;
}
.bp-num-bar {
    width: 32px;
    height: 2px;
    background: var(--red-primary);
    margin-top: 24px;
}
.bp-num-total {
    margin-top: 12px;
    font-size: 11px;
    color: #999;
    letter-spacing: 0.15em;
    font-weight: 400;
}

/* ── 中栏：正文（图片风格） ── */
.biz-panel-main {
    padding-top: 16px;
    display: flex;
    flex-direction: column;
}
.bp-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: #555;
    font-weight: 500;
    margin-bottom: 28px;
    letter-spacing: 0.05em;
}
.bp-eyebrow-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--red-primary);
    margin-right: 4px;
}
.bp-title {
    font-size: 34px;
    font-weight: 700;
    color: #111;
    line-height: 1.2;
    letter-spacing: 0.01em;
    margin: 0 0 28px;
    white-space: nowrap;
}
.bp-desc {
    font-size: 15px;
    line-height: 2;
    color: #555;
    margin: 0 0 36px;
    max-width: 560px;
}
.bp-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 40px;
}
.bp-badge {
    display: inline-block;
    padding: 10px 20px;
    background: #fff;
    border: 1px solid var(--red-primary);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--red-primary);
    letter-spacing: 0.02em;
    transition: all 0.25s ease;
    white-space: nowrap;
}
.bp-badge:hover {
    border-color: var(--red-primary);
    color: var(--red-primary);
}
.bp-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: auto;
}
.bp-actions .btn-primary {
    padding: 16px 28px;
    font-size: 13px;
    letter-spacing: 0.15em;
    font-weight: 600;
}
.bp-actions .btn-primary span {
    display: inline-block;
    margin-left: 6px;
    transition: transform 0.3s ease;
}
.bp-actions .btn-primary:hover span { transform: translateX(4px); }
.bp-actions .btn-ghost {
    padding: 16px 28px;
    font-size: 13px;
    letter-spacing: 0.15em;
    font-weight: 500;
    color: #333;
}

/* ── 右栏：案例与数据 ── */
.biz-panel-side {
    padding: 8px 0 0;
    display: flex;
    flex-direction: column;
    border-left: 1px solid rgba(0, 0, 0, 0.08);
    padding-left: 56px;
}

/* 案例列表 */
.bp-cases {
    margin-bottom: 48px;
}
.bp-cases-label {
    font-size: 10px;
    color: var(--red-primary);
    letter-spacing: 0.3em;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}
.bp-cases ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
}
.bp-cases ul li {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 0;
    font-size: 14px;
    color: #2a2a2a;
    line-height: 1.4;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-weight: 500;
    transition: padding-left 0.3s ease, color 0.3s ease;
}
.bp-cases ul li:hover {
    padding-left: 8px;
    color: var(--red-primary);
}
.bp-case-index {
    font-size: 11px;
    color: #999;
    font-weight: 600;
    letter-spacing: 0.2em;
    min-width: 24px;
}
.bp-case-name { flex: 1; }

/* 数据区 */
.bp-stats {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.bp-stat {
    padding: 0 0 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    position: relative;
}
.bp-stat:last-child { border-bottom: none; }
.bp-stat-value {
    font-size: 38px;
    font-weight: 200;
    color: #0c0c0c;
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 10px;
    font-feature-settings: "tnum";
}
.bp-stat-label {
    font-size: 11px;
    color: #999;
    letter-spacing: 0.2em;
    line-height: 1.4;
    font-weight: 500;
}
.bp-stat-line {
    position: absolute;
    top: 14px;
    right: 0;
    width: 40px;
    height: 1px;
    background: var(--red-primary);
    opacity: 0.8;
}

/* ── 响应式 ───────────────────────────── */
@media (max-width: 1200px) {
    .biz-panel {
        grid-template-columns: 100px 1fr 280px;
        gap: 40px;
    }
    .bp-num-big { font-size: 96px; }
    .bp-title { font-size: 36px; }
    .biz-panel-side { padding-left: 40px; }
}
@media (max-width: 900px) {
    .biz-tabs-section { padding-top: 40px; padding-bottom: 80px; }
    .biz-head { margin-bottom: 48px; }
    .biz-head-title { font-size: 28px; }
    .biz-tabs {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
        margin-bottom: 48px;
    }
    .biz-tab { padding: 20px 16px; min-height: 92px; }
    .biz-tab .bt-index { font-size: 64px; right: -4px; bottom: -12px; }
    .biz-tab.is-active .bt-index { font-size: 72px; }
    .biz-tab .bt-name { font-size: 14px; }
    .biz-panel {
        grid-template-columns: 1fr;
        gap: 0;
        min-height: auto;
    }
    .biz-panel-num {
        flex-direction: row;
        align-items: center;
        gap: 16px;
        padding: 0 0 20px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.08);
        margin-bottom: 28px;
    }
    .bp-num-big { font-size: 56px; }
    .bp-num-small { margin-top: 0; }
    .bp-num-bar { margin-top: 0; }
    .bp-num-total { margin-top: 0; }
    .biz-panel-main { padding-top: 0; }
    .bp-title { font-size: 28px; margin-bottom: 20px; }
    .bp-desc { font-size: 13.5px; line-height: 1.9; }
    .bp-badge { padding: 8px 16px; font-size: 13px; }
    .biz-panel-side {
        padding-left: 0;
        padding-top: 32px;
        margin-top: 32px;
        border-left: none;
        border-top: 1px solid rgba(0, 0, 0, 0.08);
    }
    .bp-stat-value { font-size: 28px; }
}
@media (max-width: 600px) {
    .biz-tabs { grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 32px; }
    .biz-tab { padding: 16px 12px; min-height: 80px; }
    .biz-tab .bt-index { font-size: 48px; right: -2px; bottom: -8px; }
    .biz-tab.is-active .bt-index { font-size: 56px; }
    .biz-tab .bt-name { font-size: 13px; }
    .biz-tab .bt-arrow { display: none; }
    .bp-title { font-size: 22px; }
    .bp-num-big { font-size: 36px; }
    .bp-stat-value { font-size: 22px; }
}

/* ── 案例展示模块 ───────────────────────────── */
.biz-cases-section {
    background: #fafafa;
    padding: 96px 0;
}
.biz-cases-head {
    max-width: 620px;
    margin-bottom: 56px;
    padding-left: 0;
}
.biz-ch-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--red-primary);
    letter-spacing: 0.25em;
    margin-bottom: 20px;
    text-transform: none;
}
.biz-ch-title {
    font-size: 34px;
    font-weight: 700;
    color: #111;
    line-height: 1.25;
    letter-spacing: 0.01em;
    margin: 0 0 20px;
}
.biz-ch-sub {
    font-size: 15px;
    line-height: 1.8;
    color: #666;
    margin: 0;
}
.biz-cases-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.biz-case-card {
    display: grid;
    grid-template-columns: 44% 1fr;
    gap: 0;
    background: #fff;
    border-radius: 4px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.biz-case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}
.biz-case-img {
    position: relative;
    background: #f0f0f0;
    min-height: 220px;
    overflow: hidden;
}
.biz-case-img::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #e8e8e8 0%, #f5f5f5 100%);
}
.biz-case-img img {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    min-height: 220px;
    object-fit: cover;
    display: block;
}
.biz-case-info {
    padding: 40px 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.biz-case-cat {
    font-size: 12px;
    color: var(--red-primary);
    font-weight: 600;
    letter-spacing: 0.15em;
    margin-bottom: 16px;
}
.biz-case-name {
    font-size: 26px;
    font-weight: 700;
    color: #111;
    margin: 0 0 16px;
    letter-spacing: 0.01em;
    line-height: 1.2;
}
.biz-case-desc {
    font-size: 14px;
    color: #555;
    line-height: 1.8;
    margin: 0 0 28px;
}
.biz-case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.biz-case-tag {
    display: inline-block;
    padding: 8px 16px;
    background: #fff;
    border: 1px solid var(--red-primary);
    border-radius: 999px;
    font-size: 12.5px;
    font-weight: 500;
    color: var(--red-primary);
    letter-spacing: 0.02em;
    white-space: nowrap;
}
.biz-case-link {
    display: inline-flex;
    align-items: center;
    align-self: flex-start;
    margin-top: auto;
    padding-top: 24px;
    font-size: 13px;
    font-weight: 500;
    color: #333;
    text-decoration: none;
    letter-spacing: 0.05em;
    transition: all 0.25s ease;
}
.biz-case-link::before {
    content: "";
    display: inline-block;
    width: 24px;
    height: 1px;
    background: var(--red-primary);
    margin-right: 12px;
    transition: width 0.25s ease;
}
.biz-case-link span {
    display: inline-block;
    margin-left: 6px;
    color: var(--red-primary);
    transition: transform 0.25s ease;
}
.biz-case-link:hover {
    color: var(--red-primary);
}
.biz-case-link:hover::before {
    width: 40px;
}
.biz-case-link:hover span {
    transform: translateX(4px);
}

@media (max-width: 900px) {
    .biz-cases-section { padding: 64px 0; }
    .biz-cases-head { margin-bottom: 40px; }
    .biz-ch-title { font-size: 28px; }
    .biz-case-card {
        grid-template-columns: 1fr;
    }
    .biz-case-info { padding: 28px 24px; }
    .biz-case-name { font-size: 22px; }
    .biz-case-img { min-height: 200px; }
    .biz-case-img img { min-height: 200px; }
}
@media (max-width: 600px) {
    .biz-cases-section { padding: 48px 0; }
    .biz-ch-title { font-size: 22px; }
    .biz-ch-eyebrow { font-size: 11px; }
    .biz-ch-sub { font-size: 13px; }
    .biz-case-info { padding: 20px 16px; }
    .biz-case-name { font-size: 18px; }
    .biz-case-tag { font-size: 11.5px; padding: 6px 12px; }
}

/* ── 核心方法论模块 ───────────────────────────── */
.biz-method-section {
    background: #fafafa;
    padding: 50px 0;
}
.biz-method-head {
    max-width: 620px;
    margin-bottom: 56px;
}
.biz-method-head .biz-ch-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--red-primary);
    letter-spacing: 0.25em;
    margin-bottom: 20px;
}
.biz-method-head .biz-ch-title {
    font-size: 34px;
    font-weight: 700;
    color: #111;
    line-height: 1.25;
    letter-spacing: 0.01em;
    margin: 0 0 20px;
}
.biz-method-head .biz-ch-sub {
    font-size: 15px;
    line-height: 1.8;
    color: #666;
    margin: 0;
}
.biz-method-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
}
.biz-method-item {
    display: flex;
    align-items: flex-start;
    gap: 32px;
    padding: 36px 40px;
    background: #fff;
    border-radius: 4px;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.biz-method-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.06);
}
.biz-method-num {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #fff;
    border: 1px solid var(--red-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    color: var(--red-primary);
    margin-top: 2px;
    transition: background 0.25s ease, color 0.25s ease;
}
.biz-method-item:hover .biz-method-num {
    background: var(--red-primary);
    color: #fff;
}
.biz-method-body {
    flex: 1;
    min-width: 0;
}
.biz-method-title {
    font-size: 22px;
    font-weight: 700;
    color: #111;
    margin: 0 0 14px;
    line-height: 1.3;
    letter-spacing: 0.01em;
}
.biz-method-desc {
    font-size: 14px;
    line-height: 2;
    color: #555;
    margin: 0;
}

@media (max-width: 900px) {
    .biz-method-section { padding: 64px 0; }
    .biz-method-head { margin-bottom: 40px; }
    .biz-method-head .biz-ch-title { font-size: 28px; }
    .biz-method-item { padding: 24px 28px; gap: 20px; }
    .biz-method-num { width: 40px; height: 40px; font-size: 14px; }
    .biz-method-title { font-size: 18px; }
}
@media (max-width: 600px) {
    .biz-method-section { padding: 48px 0; }
    .biz-method-head .biz-ch-title { font-size: 22px; }
    .biz-method-item { padding: 20px 16px; gap: 14px; }
    .biz-method-num { width: 36px; height: 36px; font-size: 13px; }
    .biz-method-title { font-size: 16px; }
    .biz-method-desc { font-size: 13px; line-height: 1.8; }
}

/* ── 服务流程模块 ───────────────────────────── */
.biz-process-section {
    background: #fff;
    padding: 50px 0;
}
.biz-process-head {
    max-width: 620px;
    margin-bottom: 72px;
}
.biz-process-head .biz-ch-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--red-primary);
    letter-spacing: 0.25em;
    margin-bottom: 20px;
}
.biz-process-head .biz-ch-title {
    font-size: 34px;
    font-weight: 700;
    color: #111;
    line-height: 1.25;
    letter-spacing: 0.01em;
    margin: 0 0 20px;
}
.biz-process-head .biz-ch-sub {
    font-size: 15px;
    line-height: 1.8;
    color: #666;
    margin: 0;
}
.biz-process-list {
    position: relative;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    align-items: flex-start;
}
.biz-process-item {
    position: relative;
    text-align: center;
    padding: 0 12px;
}
.biz-process-num {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--red-primary);
    color: #fff;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.02em;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    box-shadow: 0 6px 18px rgba(205, 24, 24, 0.25);
}
.biz-process-title {
    font-size: 18px;
    font-weight: 700;
    color: #111;
    margin: 0 0 12px;
    line-height: 1.3;
}
.biz-process-desc {
    font-size: 13px;
    line-height: 1.7;
    color: #666;
    margin: 0;
}

@media (max-width: 900px) {
    .biz-process-section { padding: 64px 0; }
    .biz-process-head { margin-bottom: 48px; }
    .biz-process-head .biz-ch-title { font-size: 28px; }
    .biz-process-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px 24px;
    }
    .biz-process-item:last-child { grid-column: 1 / -1; }
    .biz-process-num { width: 60px; height: 60px; font-size: 18px; margin-bottom: 16px; }
    .biz-process-title { font-size: 16px; }
}
@media (max-width: 600px) {
    .biz-process-section { padding: 48px 0; }
    .biz-process-head .biz-ch-title { font-size: 22px; }
    .biz-process-list {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .biz-process-num { width: 56px; height: 56px; font-size: 16px; }
}

/* ── 核心服务内容模块 ───────────────────────────── */
.biz-services-section {
    background: #fafafa;
    padding: 50px 0;
}
.biz-services-head {
    max-width: 620px;
    margin-bottom: 48px;
}
.biz-services-head .biz-ch-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--red-primary);
    letter-spacing: 0.25em;
    margin-bottom: 20px;
}
.biz-services-head .biz-ch-title {
    font-size: 34px;
    font-weight: 700;
    color: #111;
    line-height: 1.25;
    letter-spacing: 0.01em;
    margin: 0;
}
.biz-services-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px 96px;
}
.biz-services-col {
    display: flex;
    flex-direction: column;
    gap: 0;
}
.biz-services-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 20px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    transition: padding 0.25s ease;
}
.biz-services-item:hover {
    padding-left: 8px;
}
.biz-services-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #fff;
    border: 1px solid var(--red-primary);
    color: var(--red-primary);
    font-size: 14px;
    font-weight: 700;
    line-height: 1;
    margin-top: 1px;
}
.biz-services-text {
    flex: 1;
    font-size: 16px;
    font-weight: 500;
    color: #333;
    line-height: 1.6;
    letter-spacing: 0.01em;
}

@media (max-width: 900px) {
    .biz-services-section { padding: 64px 0; }
    .biz-services-head { margin-bottom: 36px; }
    .biz-services-head .biz-ch-title { font-size: 28px; }
    .biz-services-grid { gap: 24px 48px; }
    .biz-services-item { padding: 16px 0; gap: 12px; }
    .biz-services-arrow { width: 20px; height: 20px; font-size: 12px; }
    .biz-services-text { font-size: 15px; }
}
@media (max-width: 600px) {
    .biz-services-section { padding: 48px 0; }
    .biz-services-head .biz-ch-title { font-size: 22px; }
    .biz-services-grid { grid-template-columns: 1fr; gap: 0; }
    .biz-services-text { font-size: 14px; }
}

/* ============================================================
   business.php · 投资方案页重构（bi-* 全新类，复刻目标页 Tailwind）
   目标：https://tumuqar52pqva.ok.kimi.link/#/investment
   主色 #C8102E  hover #A00D24   背景交替 #fff / #FAFAFA
   ============================================================ */

/* ── 容器与段落骨架 ─────────────────────────────────────── */
.bi-wrap { max-width: 1320px; margin: 0 auto; padding: 0 40px; }
.bi-wrap-narrow { max-width: 1024px; }
.bi-wrap-center { max-width: 896px; text-align: center; }
.bi-center { text-align: center; }
.bi-sec { padding: 56px 0; }
.bi-sec-white { background: #fff; }
.bi-sec-gray { background: #FAFAFA; }
.bi-sec-head { text-align: center; max-width: 768px; margin: 0 auto 32px; }
.bi-eyebrow { display: block; font-size: 12px; color: #C8102E; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 8px; }
.bi-title { font-size: 24px; font-weight: 700; color: #1A1A1A; margin: 0 0 8px; line-height: 1.3; }
.bi-sub { font-size: 14px; color: #666; margin: 0; line-height: 1.6; }
.bi-accent { color: #C8102E; }

/* ── 按钮 ──────────────────────────────────────────────── */
.bi-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 24px; border-radius: 999px; font-size: 16px; font-weight: 700; text-decoration: none; border: 1px solid transparent; transition: all .2s ease; cursor: pointer; }
.bi-btn svg { flex: 0 0 auto; }
.bi-btn-sm { padding: 10px 20px; font-size: 14px; }
.bi-btn-primary { background: #C8102E; color: #fff; }
.bi-btn-primary:hover { background: #A00D24; color: #fff; }
.bi-btn-ghost { background: rgba(255,255,255,.7); color: #1A1A1A; border-color: #e5e5e5; }
.bi-btn-ghost:hover { border-color: #C8102E; color: #C8102E; }

/* ── S1 英雄区（与 CTA 共用渐变） ────────────────────────── */
.bi-hero {
    padding: 56px 0 80px;
    text-align: center;
    background: linear-gradient(135deg, #FFF5F5 0%, #F5F0FF 40%, #E8F4FF 100%);
}
.bi-hero-title { font-size: 30px; font-weight: 700; color: #1A1A1A; margin: 0 0 12px; line-height: 1.3; }
.bi-hero-title-accent { color: #C8102E; }
.bi-hero-desc { font-size: 14px; color: #666; max-width: 672px; margin: 0 auto 24px; line-height: 1.7; }
.bi-hero-desc-strong { color: #1A1A1A; font-weight: 500; }
.bi-hero-card { background: #fff; border: 1px solid #F0F0F0; border-radius: 16px; padding: 24px; max-width: 768px; margin: 0 auto 32px; }
.bi-hero-card-title { font-size: 18px; font-weight: 700; color: #1A1A1A; margin: 0 0 16px; line-height: 1.4; }
.bi-chip-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.bi-chip { font-size: 10px; color: #1A1A1A; background: #FAFAFA; border-radius: 999px; padding: 6px 12px; }
.bi-stats { display: flex; flex-wrap: wrap; justify-content: center; gap: 24px; margin-bottom: 32px; }
.bi-stat { text-align: center; }
.bi-stat-num { font-size: 24px; font-weight: 700; color: #C8102E; line-height: 1.2; }
.bi-stat-label { font-size: 10px; color: #666; margin-top: 4px; }
.bi-hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }

/* ── S2 WHY INVEST ─────────────────────────────────────── */
.bi-why-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin-bottom: 24px; }
.bi-why-card { background: #FAFAFA; border-radius: 16px; padding: 20px; text-align: center; transition: all .2s ease; }
.bi-why-card:hover { border: 1px solid rgba(200,16,46,.3); }
.bi-why-name { font-size: 18px; font-weight: 700; color: #C8102E; margin: 0 0 8px; }
.bi-why-desc { font-size: 14px; color: #666; margin: 0; line-height: 1.6; }
.bi-insight { background: #FAFAFA; border-radius: 16px; padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.bi-insight-left { display: flex; align-items: center; gap: 8px; }
.bi-insight-icon { display: inline-flex; flex: 0 0 auto; }
.bi-insight-label { font-size: 14px; font-weight: 700; color: #C8102E; }
.bi-insight-desc { font-size: 14px; color: #666; margin: 0; line-height: 1.7; }
.bi-insight-desc strong { color: #1A1A1A; font-weight: 700; }

/* ── S3 YOUR TYPE ──────────────────────────────────────── */
.bi-type-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.bi-type-card { background: #fff; border: 1px solid #F0F0F0; border-radius: 16px; overflow: hidden; transition: all .2s ease; }
.bi-type-card:hover { border-color: rgba(200,16,46,.3); box-shadow: 0 10px 30px rgba(0,0,0,.06); }
.bi-type-card-head { background: #C8102E; padding: 16px 20px; }
.bi-type-card-title { color: #fff; font-size: 18px; font-weight: 700; margin: 0; }
.bi-type-card-body { padding: 20px; }
.bi-type-desc { font-size: 14px; color: #555; margin: 0 0 12px; line-height: 1.7; }
.bi-type-label { font-size: 12px; font-weight: 700; color: #999; margin: 0 0 8px; text-transform: uppercase; letter-spacing: .05em; }
.bi-tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.bi-tag { font-size: 12px; color: #555; background: #FAFAFA; border-radius: 6px; padding: 4px 8px; }
.bi-type-foot { font-size: 12px; color: #999; margin: 0; line-height: 1.6; }

/* ── S4 5 SCENARIOS ────────────────────────────────────── */
.bi-scene-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 24px; }
.bi-scene-card { background: #fff; border: 1px solid #F0F0F0; border-radius: 16px; padding: 20px; transition: all .2s ease; }
.bi-scene-card:hover { border-color: rgba(200,16,46,.3); box-shadow: 0 6px 20px rgba(0,0,0,.06); }
.bi-scene-row { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.bi-scene-main { flex: 1; min-width: 0; }
.bi-scene-q { font-size: 14px; font-weight: 700; color: #1A1A1A; margin: 0 0 4px; }
.bi-scene-pain { font-size: 12px; color: #666; margin: 0; line-height: 1.6; }
.bi-scene-match { display: flex; align-items: center; gap: 8px; flex: 0 0 auto; }
.bi-scene-level { font-size: 12px; font-weight: 700; color: #C8102E; white-space: nowrap; }

/* ── S5 THREE LEVELS ───────────────────────────────────── */
.bi-level-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin-bottom: 24px; }
.bi-level-card { background: #fff; border: 1px solid #F0F0F0; border-radius: 16px; padding: 20px; transition: all .2s ease; }
.bi-level-card:hover { border-color: rgba(200,16,46,.3); box-shadow: 0 10px 30px rgba(0,0,0,.08); }
.bi-level-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.bi-level-badge { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 12px; background: #C8102E; color: #fff; font-size: 18px; font-weight: 700; flex: 0 0 auto; }
.bi-level-price { font-size: 18px; font-weight: 700; color: #C8102E; line-height: 1.1; }
.bi-level-price small { font-size: 12px; font-weight: 400; color: #999; margin-left: 2px; }
.bi-level-name { font-size: 16px; font-weight: 700; color: #1A1A1A; margin: 0 0 6px; }
.bi-level-solve { font-size: 14px; color: #666; margin: 0 0 12px; line-height: 1.6; }
.bi-level-meta { font-size: 12px; color: #999; margin: 0 0 12px; }
.bi-level-fit { font-size: 12px; color: #666; margin: 0; line-height: 1.6; }
.bi-level-fit strong { font-weight: 700; color: #1A1A1A; }

/* ── S6 WHAT YOU GET ───────────────────────────────────── */
.bi-get-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 32px; }
.bi-get-card { background: #fff; border: 1px solid #F0F0F0; border-radius: 16px; padding: 20px; text-align: center; transition: all .2s ease; }
.bi-get-card:hover { border-color: rgba(200,16,46,.3); }
.bi-get-card--red { background: #C8102E; border-color: #C8102E; }
.bi-get-name { font-size: 18px; font-weight: 700; color: #1A1A1A; margin: 0 0 6px; }
.bi-get-name--red { color: #fff; }
.bi-get-desc { font-size: 14px; color: #666; margin: 0; line-height: 1.6; }
.bi-get-desc--red { color: rgba(255,255,255,.8); }
.bi-principles { background: #FAFAFA; border-radius: 16px; padding: 20px; }
.bi-principles-title { font-size: 16px; font-weight: 700; color: #1A1A1A; text-align: center; margin: 0 0 12px; }
.bi-principles-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.bi-principle { text-align: center; }
.bi-principle-num { display: block; font-size: 18px; font-weight: 700; color: #C8102E; margin-bottom: 6px; }
.bi-principle-name { font-size: 14px; font-weight: 700; color: #1A1A1A; margin: 0 0 4px; }
.bi-principle-desc { font-size: 12px; color: #666; margin: 0; line-height: 1.6; }

/* ── S7 REPRESENTATIVE CASES ───────────────────────────── */
.bi-case-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin-bottom: 24px; }
.bi-case-card { display: block; background: #fff; border: 1px solid #F0F0F0; border-radius: 16px; padding: 20px; height: 100%; text-decoration: none; transition: all .2s ease; }
.bi-case-card:hover { border-color: rgba(200,16,46,.3); box-shadow: 0 10px 30px rgba(0,0,0,.08); }
.bi-case-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.bi-case-name { font-size: 14px; font-weight: 700; color: #1A1A1A; margin: 0; transition: color .2s ease; }
.bi-case-card:hover .bi-case-name { color: #C8102E; }
.bi-case-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 8px; }
.bi-case-main { font-size: 14px; font-weight: 700; color: #C8102E; }
.bi-case-sub { font-size: 10px; color: #C8102E; background: rgba(200,16,46,.1); padding: 2px 8px; border-radius: 999px; }
.bi-case-desc { font-size: 12px; color: #666; margin: 0; line-height: 1.7; }
.bi-more-link { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 700; color: #C8102E; text-decoration: none; }
.bi-more-link:hover { text-decoration: underline; }
.bi-more-link span { transition: transform .2s ease; }
.bi-more-link:hover span { transform: translateX(3px); }

/* ── S8 START LIGHT ────────────────────────────────────── */
.bi-light-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.bi-light-card { background: #fff; border: 1px solid #F0F0F0; border-radius: 16px; padding: 20px; transition: all .2s ease; }
.bi-light-card--hot { border-color: rgba(200,16,46,.4); background: rgba(200,16,46,.05); box-shadow: 0 6px 20px rgba(200,16,46,.08); }
.bi-light-name { font-size: 16px; font-weight: 700; color: #1A1A1A; margin: 0 0 8px; }
.bi-light-price-row { display: flex; align-items: baseline; gap: 8px; margin-bottom: 8px; }
.bi-light-num { font-size: 18px; font-weight: 700; color: #C8102E; }
.bi-light-time { font-size: 12px; color: #999; }
.bi-light-desc { font-size: 12px; color: #666; margin: 0 0 12px; line-height: 1.7; }
.bi-light-tag { display: inline-block; font-size: 10px; color: #C8102E; background: rgba(200,16,46,.1); padding: 2px 8px; border-radius: 999px; }

/* ── S9 CTA（与 Hero 共用渐变） ─────────────────────────── */
.bi-cta {
    padding: 56px 0;
    background: linear-gradient(135deg, #FFF5F5 0%, #F5F0FF 40%, #E8F4FF 100%);
}
.bi-cta-title { font-size: 24px; font-weight: 700; color: #1A1A1A; margin: 0 0 8px; }
.bi-cta-sub { font-size: 14px; color: #666; margin: 0 0 24px; }
.bi-cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }

/* ── 响应式断点（lg=1024 / md=768） ─────────────────────── */
@media (min-width: 768px) {
    .bi-why-grid { grid-template-columns: repeat(3, 1fr); }
    .bi-scene-row { flex-direction: row; align-items: center; justify-content: space-between; }
    .bi-level-grid { grid-template-columns: repeat(3, 1fr); }
    .bi-get-grid { grid-template-columns: repeat(3, 1fr); }
    .bi-principles-grid { grid-template-columns: repeat(3, 1fr); }
    .bi-case-grid { grid-template-columns: repeat(3, 1fr); }
    .bi-light-grid { grid-template-columns: repeat(3, 1fr); }
    .bi-insight { flex-direction: row; align-items: flex-start; }
    .bi-insight-left { flex: 0 0 auto; }
}
@media (min-width: 1024px) {
    .bi-hero-title { font-size: 44px; }
    .bi-type-grid { grid-template-columns: repeat(2, 1fr); }
    .bi-get-grid { grid-template-columns: repeat(5, 1fr); }
}
@media (max-width: 480px) {
    .bi-wrap { padding: 0 20px; }
    .bi-btn { width: 100%; justify-content: center; }
}