/* ==========================================================================
   cozunet.com · css/pages/case-huanbao.css
   版式：分屏错位变体 · 环保工程
   骨架：通栏页首 → 左图右信息概览 → 痛点/目标左右对照 → 三列图片卡设计思路
         → 大卡+小卡不对称实现 → 深棕错位2x2成果 → 错落卡片更多案例 → 联系带
   ========================================================================== */

/* ---------- 案例页首 ---------- */
.case-hero{position:relative;min-height:72vh;display:flex;align-items:flex-end;overflow:hidden}
.case-hero-media{position:absolute;inset:0}
.case-hero-media img{width:100%;height:100%;object-fit:cover}
.case-hero-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(32,48,42,.34) 0%,rgba(32,48,42,.14) 45%,rgba(32,48,42,.88) 100%)}
.case-hero-in{position:relative;z-index:2;padding-top:130px;padding-bottom:40px;width:100%}
.case-hero .crumb a{color:rgba(255,255,255,.72)}
.case-hero .crumb .now{color:rgba(255,255,255,.92)}
.case-hero .crumb i{color:rgba(255,255,255,.4)}
.case-hero .sec-eyebrow{color:rgba(255,255,255,.78)}
.case-hero .sec-eyebrow::before{background:rgba(255,255,255,.5)}
.case-hero h1{color:#fff;font-size:clamp(28px,4vw,48px);margin:14px 0 12px}
.case-hero-desc{color:rgba(255,255,255,.84);font-size:clamp(14px,1.5vw,17px);max-width:660px}

/* ---------- 项目概览：左图右信息 ---------- */
.overview{padding:96px 0 70px}
.ov-split{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:start}
.ov-media{border-radius:18px;overflow:hidden;box-shadow:var(--shadow);position:sticky;top:96px}
.ov-media img{width:100%;height:auto}
.ov-cap{padding:14px 20px;font-size:12.5px;color:var(--muted);background:var(--card);border-top:1px solid var(--line-2);letter-spacing:.04em}
.ov-info h2{margin:12px 0 20px}
.ov-info p{color:var(--ink-2);font-size:15px;line-height:2.05;margin-bottom:16px}
.ov-info strong{color:var(--brown)}
.ov-list{margin-top:26px;border-top:1px solid var(--line)}
.ov-list div{display:flex;justify-content:space-between;gap:24px;padding:14px 0;border-bottom:1px dashed var(--line-2)}
.ov-list dt{font-size:13px;color:var(--muted);letter-spacing:.12em;flex:none}
.ov-list dd{font-size:14.5px;color:var(--ink);text-align:right;font-weight:500}
@media (max-width:860px){.ov-split{grid-template-columns:1fr;gap:36px}.ov-media{position:static}}

/* ---------- 痛点与目标：左右对照 ---------- */
.pain{padding:84px 0 80px;background:var(--card);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.pain-cols{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:20px;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow-sm)}
.pain-side{padding:38px 36px}
.pain-side:first-child{background:var(--paper);border-right:1px solid var(--line)}
.pain-side:last-child{background:var(--brown-bg)}
.side-h{font-size:19px;margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.side-h-bad{color:var(--ink)}
.side-h-good{color:var(--brown-deep)}
.side-list{display:grid;gap:14px}
.side-list li{font-size:14.5px;color:var(--ink-2);line-height:1.9;padding-left:20px;position:relative}
.side-list li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:2px;background:var(--brown-soft)}
@media (max-width:760px){.pain-cols{grid-template-columns:1fr}.pain-side:first-child{border-right:0;border-bottom:1px solid var(--line)}}

/* ---------- 设计思路：三列图片卡 ---------- */
.design{padding:96px 0 60px}
.ds-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:10px}
.ds-card{background:var(--card);border:1px solid var(--line-2);border-radius:var(--r);overflow:hidden;transition:transform .45s var(--ease),box-shadow .45s var(--ease)}
.ds-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.ds-card figure{overflow:hidden}
.ds-card figure img{width:100%;height:220px;object-fit:cover;transition:transform .8s var(--ease)}
.ds-card:hover figure img{transform:scale(1.05)}
.ds-card-body{padding:24px 24px 28px}
.ds-tag{display:inline-block;font-size:12px;letter-spacing:.2em;color:var(--brown-soft);margin-bottom:10px}
.ds-card-body h3{font-size:18px;margin-bottom:10px}
.ds-card-body p{font-size:13.5px;color:var(--ink-2);line-height:1.95}
@media (max-width:900px){.ds-cols{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.ds-cols{grid-template-columns:1fr}}

/* ---------- 功能与实现：不对称网格 ---------- */
.impl{padding:84px 0 90px;background:var(--card);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.impl-mix{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;margin-top:20px}
.impl-big{grid-row:span 2;background:var(--brown);color:#fff;border-radius:var(--r);padding:44px 40px;display:flex;flex-direction:column;justify-content:flex-end}
.impl-big .impl-ic{width:52px;height:52px;border-radius:14px;background:rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;margin-bottom:24px}
.impl-big .impl-ic svg{width:26px;height:26px}
.impl-big h3{color:#fff;font-size:23px;margin-bottom:14px}
.impl-big p{color:rgba(255,255,255,.76);font-size:14.5px;line-height:2}
.impl-mini{background:var(--paper);border:1px solid var(--line-2);border-radius:var(--r);padding:30px 28px}
.impl-mini h3{font-size:17px;margin-bottom:10px}
.impl-mini p{font-size:13.5px;color:var(--ink-2);line-height:1.95}
@media (max-width:860px){.impl-mix{grid-template-columns:1fr}.impl-big{grid-row:auto}}

/* ---------- 成果数据：深棕错位 2x2 ---------- */
.result{background:var(--brown);padding:88px 0}
.result .sec-eyebrow{color:rgba(255,255,255,.6)}
.result .sec-title{color:#fff}
.result .sec-desc{color:rgba(255,255,255,.66)}
.res-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:44px;max-width:880px;margin-left:auto;margin-right:auto}
.res-cell{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--r);padding:30px 28px}
.res-cell-offset{transform:translateY(26px)}
.res-cell b{font-family:var(--font-serif);font-size:clamp(32px,3.2vw,44px);color:#fff;line-height:1;display:block}
.res-cell b em{font-style:normal;font-size:.45em;color:rgba(255,255,255,.55);margin-left:4px}
.res-cell span{display:block;margin-top:10px;font-size:13px;color:rgba(255,255,255,.68);letter-spacing:.05em}
@media (max-width:700px){.res-grid{grid-template-columns:1fr}.res-cell-offset{transform:none}}

/* ---------- 更多案例：错落卡片 ---------- */
.more-case{padding:96px 0 56px}
.mc-stagger{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:10px}
.mc-card{background:var(--card);border:1px solid var(--line-2);border-radius:var(--r);overflow:hidden;transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.mc-card:nth-child(2){transform:translateY(34px)}
.mc-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.mc-card:nth-child(2):hover{transform:translateY(28px)}
.mc-card img{width:100%;height:200px;object-fit:cover}
.mc-body{padding:20px 22px 24px}
.mc-body h3{font-size:16.5px;margin-top:12px}
.mc-more{text-align:center;margin-top:70px}
@media (max-width:820px){.mc-stagger{grid-template-columns:1fr}.mc-card:nth-child(2){transform:none}}

/* ---------- 联系 CTA ---------- */
.case-cta{background:var(--brown-deep);padding:72px 0}
.case-cta-in{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.case-cta-copy h2{color:#fff;font-size:clamp(23px,2.8vw,32px);margin-bottom:10px}
.case-cta-copy p{color:rgba(255,255,255,.68);font-size:14.5px;letter-spacing:.05em}
.case-cta-btns{display:flex;gap:16px;flex-wrap:wrap}

/* ---------- 交付与服务 ---------- */
.delivered{padding:88px 0;background:var(--card);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.del-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:36px}
.del-cell{background:var(--paper);border:1px solid var(--line-2);border-radius:var(--r);padding:26px 22px}
.del-cell h3{font-size:15.5px;margin-bottom:10px}
.del-cell p{font-size:13.5px;color:var(--ink-2);line-height:1.95}
@media (max-width:900px){.del-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.del-grid{grid-template-columns:1fr}}

/* ---------- 客户反馈 ---------- */
.voice{padding:88px 0}
.voice-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:32px}
.voice-card{background:var(--brown-bg);border:1px solid var(--line-2);border-radius:var(--r);padding:28px 26px}
.voice-card p{font-size:14px;color:var(--ink-2);line-height:2;margin-bottom:14px}
.voice-card footer{font-size:12.5px;color:var(--brown-soft);letter-spacing:.05em}
@media (max-width:860px){.voice-cards{grid-template-columns:1fr}}

/* ---------- 常见问题 ---------- */
.faq{padding:88px 0;background:var(--card);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.faq-list{display:grid;gap:14px;margin-top:32px;max-width:960px;margin-left:auto;margin-right:auto}
.faq-item{background:var(--paper);border:1px solid var(--line-2);border-radius:var(--r);padding:24px 28px}
.faq-item h3{font-size:16px;margin-bottom:10px;color:var(--brown-deep)}
.faq-item p{font-size:14px;color:var(--ink-2);line-height:2;margin-bottom:8px}
.faq-item p:last-child{margin-bottom:0}

/* ---------- 合作流程 ---------- */
.process{padding:88px 0}
.proc-list{list-style:none;margin-top:32px;display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.proc-list li{background:var(--card);border:1px solid var(--line-2);border-radius:var(--r);padding:24px 20px;border-top:3px solid var(--brown)}
.proc-no{display:block;font-size:12px;letter-spacing:.15em;color:var(--brown-soft);margin-bottom:10px}
.proc-list h3{font-size:15px;margin-bottom:8px}
.proc-list p{font-size:13px;color:var(--ink-2);line-height:1.9}
@media (max-width:900px){.proc-list{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.proc-list{grid-template-columns:1fr}}
/* ---------- 上线后配合 ---------- */
.followup{padding:88px 0;background:var(--brown-bg);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.up-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:36px}
.up-cell{background:var(--card);border:1px solid var(--line-2);border-radius:var(--r);padding:26px 22px}
.up-cell h3{font-size:15.5px;margin-bottom:10px}
.up-cell p{font-size:13.5px;color:var(--ink-2);line-height:1.95}
@media (max-width:900px){.up-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.up-grid{grid-template-columns:1fr}}