/* ==========================================================================
   南诺方邦建站 nnfb.cn — 案例展示样式
   适用：case.html（案例列表）/ case-show*.html（案例详情）
   依赖：base.css（变量 / 按钮 / 动画）+ inner.css（页头 / 面包屑骨架）
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 列表页 · 行业分类锚点 chips
   -------------------------------------------------------------------------- */
.case-chips { padding: 6px 0 10px; }
.case-chips-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}
.case-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 22px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--milk);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: .08em;
    color: var(--ink-body);
    transition: color .3s ease, background .3s ease, border-color .3s ease, transform .3s ease, box-shadow .3s ease;
}
.case-chip::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--butter);
    transition: background .3s ease;
}
.case-chip:hover {
    color: var(--pink-deep);
    border-color: var(--pink);
    background: var(--pink-soft);
    transform: translateY(-2px);
}
.case-chip:hover::before { background: var(--pink); }
.case-chip--all {
    background: linear-gradient(135deg, var(--butter) 0%, #EBAF54 100%);
    border-color: transparent;
    color: #5C3D0E;
    box-shadow: 0 8px 18px rgba(233, 172, 84, .32);
}
.case-chip--all::before { background: #FFF3E2; }

/* --------------------------------------------------------------------------
   2. 列表页 · columns 瀑布流
   -------------------------------------------------------------------------- */
.case-falls-wrap { padding: 28px 0 12px; scroll-margin-top: 130px; }
.case-falls {
    columns: 3;
    column-gap: 26px;
}
.case-card {
    break-inside: avoid;
    display: block;
    margin: 0 0 26px;
    background: var(--milk);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    scroll-margin-top: 150px;
    transition: transform .4s ease, box-shadow .4s ease, border-color .4s ease;
}
.case-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
    border-color: var(--butter);
}
.case-card-media {
    position: relative;
    display: block;
    overflow: hidden;
}
.case-card-media img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    transition: transform .6s ease;
}
/* 卡片不等高：三种画幅循环 */
.case-card:nth-of-type(3n+1) .case-card-media img { aspect-ratio: 4 / 3; }
.case-card:nth-of-type(3n+2) .case-card-media img { aspect-ratio: 16 / 10; }
.case-card:nth-of-type(3n)   .case-card-media img { aspect-ratio: 3 / 2; }
.case-card:hover .case-card-media img { transform: scale(1.05); }
.case-card-no {
    position: absolute;
    right: 14px;
    top: 14px;
    min-width: 46px;
    padding: 5px 13px;
    border-radius: 999px;
    background: rgba(255, 253, 249, .9);
    font-family: var(--serif);
    font-size: 13px;
    font-weight: 700;
    color: var(--butter-deep);
    text-align: center;
    letter-spacing: .1em;
}
.case-card-body {
    display: block;
    padding: 20px 22px 22px;
}
.case-card-tag {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 999px;
    background: var(--butter-soft);
    color: var(--butter-deep);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .14em;
    margin-bottom: 12px;
}
.case-card-title {
    font-size: 18px;
    line-height: 1.5;
    margin-bottom: 8px;
}
.case-card-desc {
    font-size: 14px;
    color: var(--ink-mute);
    line-height: 1.8;
    margin-bottom: 16px;
}
.case-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding-top: 14px;
    border-top: 1px dashed var(--line);
    font-size: 13px;
}
.case-card-cycle {
    display: inline-flex;
    align-items: baseline;
    gap: 5px;
    color: var(--ink-mute);
    letter-spacing: .06em;
}
.case-card-cycle strong {
    font-family: var(--serif);
    font-size: 17px;
    color: var(--pink-deep);
}
.case-card-go {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .1em;
    color: var(--butter-deep);
    white-space: nowrap;
}
.case-card-go svg { transition: transform .3s ease; }
.case-card:hover .case-card-go { color: var(--pink-deep); }
.case-card:hover .case-card-go svg { transform: translateX(4px); }

/* --------------------------------------------------------------------------
   3. 列表页 · 底部数据带
   -------------------------------------------------------------------------- */
.case-stats-band {
    margin-top: 58px;
    padding: 50px 34px;
    border-radius: var(--r-lg);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    background:
        radial-gradient(360px 200px at 8% 0%, rgba(242, 192, 99, .32) 0%, transparent 70%),
        radial-gradient(360px 200px at 92% 100%, rgba(242, 169, 180, .28) 0%, transparent 70%),
        var(--milk);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    text-align: center;
}
.case-stat strong {
    display: block;
    font-family: var(--serif);
    font-size: clamp(40px, 5vw, 54px);
    line-height: 1.1;
    color: var(--butter-deep);
}
.case-stat strong i {
    font-size: .45em;
    margin-left: 4px;
    color: var(--pink-deep);
}
.case-stat span {
    display: block;
    margin-top: 8px;
    font-size: 14.5px;
    letter-spacing: .18em;
    color: var(--ink-mute);
}

/* --------------------------------------------------------------------------
   4. 详情页 · 项目速览单
   -------------------------------------------------------------------------- */
.case-brief-card {
    background: var(--milk);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.case-brief-head {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 18px 32px;
    background: linear-gradient(90deg, var(--butter-soft) 0%, var(--pink-soft) 100%);
    border-bottom: 1px solid var(--line);
}
.case-brief-head svg { flex-shrink: 0; }
.case-brief-head h2 {
    font-size: 17px;
    letter-spacing: .2em;
    color: var(--ink);
}
.case-brief-table {
    width: 100%;
    border-collapse: collapse;
}
.case-brief-table th {
    width: 172px;
    padding: 15px 32px;
    text-align: left;
    vertical-align: top;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: .12em;
    color: var(--ink);
    background: rgba(250, 231, 191, .35);
    border-bottom: 1px dashed var(--line);
    white-space: nowrap;
}
.case-brief-table td {
    padding: 15px 32px;
    font-size: 14.5px;
    color: var(--ink-body);
    border-bottom: 1px dashed var(--line);
}
.case-brief-table tr:last-child th,
.case-brief-table tr:last-child td { border-bottom: 0; }

/* --------------------------------------------------------------------------
   5. 详情页 · 大图横幅
   -------------------------------------------------------------------------- */
.case-banner {
    margin-top: 34px;
    border-radius: var(--r-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}
.case-banner img {
    width: 100%;
    aspect-ratio: 21 / 9;
    object-fit: cover;
}
.case-banner figcaption {
    padding: 12px 4px 0;
    font-size: 13px;
    color: var(--ink-mute);
    letter-spacing: .06em;
}

/* --------------------------------------------------------------------------
   6. 详情页 · 案例叙事（他们遇到的问题）
   -------------------------------------------------------------------------- */
.case-sec-alt {
    background: linear-gradient(180deg, transparent 0%, var(--pink-soft) 26%, var(--pink-soft) 74%, transparent 100%);
}
.case-story {
    max-width: 820px;
    margin: 0 auto;
    padding: 0 6px;
}
.case-story p {
    margin-bottom: 18px;
    font-size: 15.5px;
    line-height: 2.05;
    color: var(--ink-body);
    text-align: justify;
}
.case-story p:last-child { margin-bottom: 0; }
.case-story strong { color: var(--butter-deep); }

/* --------------------------------------------------------------------------
   7. 详情页 · 我们做了什么
   -------------------------------------------------------------------------- */
.case-do-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
.case-do-item {
    display: flex;
    gap: 18px;
    padding: 28px 28px 26px;
    background: var(--milk);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    box-shadow: var(--shadow-sm);
    transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}
.case-do-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--butter);
}
.case-do-icon {
    flex-shrink: 0;
    width: 58px;
    height: 58px;
    border-radius: 18px;
    background: var(--butter-soft);
    display: flex;
    align-items: center;
    justify-content: center;
}
.case-do-item:nth-of-type(even) .case-do-icon { background: var(--pink-soft); }
.case-do-body h3 {
    font-size: 16.5px;
    margin-bottom: 8px;
    letter-spacing: .06em;
}
.case-do-body p {
    font-size: 14px;
    line-height: 1.9;
    color: var(--ink-mute);
}

/* --------------------------------------------------------------------------
   8. 详情页 · 成果数据
   -------------------------------------------------------------------------- */
.case-result-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.case-result-card {
    position: relative;
    padding: 40px 24px 36px;
    background: var(--milk);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    overflow: hidden;
    transition: transform .35s ease, box-shadow .35s ease;
}
.case-result-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 46px;
    height: 4px;
    border-radius: 0 0 4px 4px;
    background: var(--butter);
}
.case-result-card:nth-of-type(2)::before { background: var(--pink); }
.case-result-card:nth-of-type(3)::before { background: linear-gradient(90deg, var(--butter), var(--pink)); }
.case-result-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.case-result-num {
    display: block;
    font-family: var(--serif);
    font-size: clamp(40px, 4.6vw, 52px);
    font-weight: 700;
    line-height: 1.1;
    color: var(--butter-deep);
}
.case-result-num i {
    font-size: .42em;
    margin-left: 3px;
    color: var(--pink-deep);
}
.case-result-label {
    display: block;
    margin-top: 12px;
    font-size: 14.5px;
    font-weight: 600;
    letter-spacing: .1em;
    color: var(--ink);
}
.case-result-note {
    display: block;
    margin-top: 6px;
    font-size: 12.5px;
    color: var(--ink-mute);
    letter-spacing: .04em;
}

/* --------------------------------------------------------------------------
   9. 详情页 · 项目图集
   -------------------------------------------------------------------------- */
.case-gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 26px;
}
.case-gallery figure img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--r-md);
    box-shadow: var(--shadow-sm);
    transition: transform .5s ease, box-shadow .5s ease;
}
.case-gallery figure:hover img {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.case-gallery figcaption {
    margin-top: 12px;
    font-size: 13px;
    color: var(--ink-mute);
    letter-spacing: .06em;
    text-align: center;
}

/* --------------------------------------------------------------------------
   10. 详情页 · 客户评价
   -------------------------------------------------------------------------- */
.case-quote {
    position: relative;
    max-width: 880px;
    margin: 0 auto;
    padding: 48px 56px 42px;
    background: var(--milk);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-sm);
}
.case-quote::before {
    content: "\201C";
    position: absolute;
    left: 30px;
    top: 6px;
    font-family: var(--serif);
    font-size: 110px;
    line-height: 1;
    color: var(--butter);
    opacity: .55;
    pointer-events: none;
}
.case-quote p {
    position: relative;
    font-size: 16.5px;
    line-height: 2.1;
    color: var(--ink-body);
    text-align: justify;
}
.case-quote footer {
    position: relative;
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px dashed var(--line);
    display: flex;
    align-items: center;
    gap: 14px;
}
.case-quote-avatar {
    flex-shrink: 0;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--butter-soft), var(--pink-soft));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--serif);
    font-size: 18px;
    font-weight: 700;
    color: var(--butter-deep);
}
.case-quote-who strong {
    display: block;
    font-size: 15.5px;
    letter-spacing: .08em;
}
.case-quote-who span {
    display: block;
    font-size: 12.5px;
    color: var(--ink-mute);
    letter-spacing: .1em;
    margin-top: 2px;
}

/* --------------------------------------------------------------------------
   11. 详情页 · 下一个案例
   -------------------------------------------------------------------------- */
.case-next {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    padding: 38px 46px;
    border-radius: var(--r-lg);
    border: 1px solid var(--line);
    background:
        radial-gradient(300px 160px at 6% 0%, rgba(242, 192, 99, .38) 0%, transparent 70%),
        radial-gradient(300px 160px at 94% 100%, rgba(242, 169, 180, .32) 0%, transparent 70%),
        var(--milk);
    box-shadow: var(--shadow-sm);
    transition: transform .4s ease, box-shadow .4s ease, border-color .4s ease;
}
.case-next:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--butter);
}
.case-next-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12.5px;
    letter-spacing: .28em;
    color: var(--pink-deep);
    margin-bottom: 10px;
}
.case-next-label::before {
    content: "";
    width: 22px;
    height: 2px;
    background: var(--butter);
    border-radius: 2px;
}
.case-next-title {
    font-size: clamp(20px, 2.6vw, 28px);
    line-height: 1.45;
    color: var(--ink);
}
.case-next-title i {
    font-style: normal;
    color: var(--butter-deep);
}
.case-next-arrow {
    flex-shrink: 0;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: var(--milk);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .35s ease, transform .35s ease;
}
.case-next:hover .case-next-arrow {
    background: var(--butter-soft);
    transform: translateX(6px);
}

/* --------------------------------------------------------------------------
   12. 通用 · 题头行内布局（标题 + 右侧链接）
   -------------------------------------------------------------------------- */
.sec-head-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 24px;
    flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   13. 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
    .case-falls { columns: 2; }
}

@media (max-width: 900px) {
    .case-do-grid { grid-template-columns: 1fr; }
    .case-gallery { grid-template-columns: 1fr; }
    .case-brief-table th { width: 118px; padding: 14px 18px; }
    .case-brief-table td { padding: 14px 18px; }
    .case-brief-head { padding: 16px 20px; }
    .case-banner img { aspect-ratio: 16 / 9; }
    .case-next { padding: 32px 30px; }
}

@media (max-width: 640px) {
    .case-falls { columns: 1; }
    .case-chips-row { gap: 10px; }
    .case-chip { padding: 8px 16px; font-size: 13px; }
    .case-stats-band {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 40px 24px;
    }
    .case-result-grid { grid-template-columns: 1fr; }
    .case-quote { padding: 38px 26px 32px; }
    .case-quote::before { left: 16px; font-size: 84px; }
    .case-next {
        flex-direction: column;
        align-items: flex-start;
        padding: 28px 24px;
    }
    .case-next-arrow { align-self: flex-end; }
}