/* ==========================================================================
   cozunet.com · css/pages/case-yiqi.css
   版式：时间线变体
   骨架：通栏页首 → 信息条在左+文案在右概览 → 痛点三卡 → 竖向时间线设计思路
         → 编号横排实现 → 浅底大数字横排成果 → 横排行式更多案例 → 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(40,48,44,.32) 0%,rgba(40,48,44,.12) 45%,rgba(40,48,44,.86) 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：信息条左 + 文案右 ---------- */
.overview{padding:96px 0 70px}
.ov-layout{display:grid;grid-template-columns:.92fr 1.08fr;gap:64px;align-items:start}
.ov-panel{background:var(--brown-deep);border-radius:var(--r);padding:10px 32px;box-shadow:var(--shadow)}
.ov-row{display:flex;flex-direction:column;gap:4px;padding:18px 0;border-bottom:1px dashed rgba(255,255,255,.18)}
.ov-row:last-child{border-bottom:0}
.ov-k{font-size:12px;letter-spacing:.24em;color:rgba(255,255,255,.46)}
.ov-v{font-size:15px;color:#fff;font-weight:500;line-height:1.7}
.ov-copy h2{margin:12px 0 20px}
.ov-copy p{color:var(--ink-2);font-size:15px;line-height:2.05;margin-bottom:16px}
.ov-copy strong{color:var(--brown)}
@media (max-width:860px){.ov-layout{grid-template-columns:1fr;gap:36px}}

/* ---------- 痛点与目标 ---------- */
.pain{padding:84px 0 40px}
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pain-card{background:var(--card);border:1px solid var(--line-2);border-radius:var(--r);padding:30px 26px;position:relative;transition:transform .45s var(--ease),box-shadow .45s var(--ease)}
.pain-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.pain-no{font-family:var(--font-serif);font-size:40px;color:var(--brown-bg);font-weight:700;line-height:1;display:block;margin-bottom:16px}
.pain-card h3{font-size:17.5px;margin-bottom:10px}
.pain-card p{font-size:13.5px;color:var(--ink-2);line-height:1.95}
.pain-goal{margin-top:28px;background:var(--brown-bg);border-left:4px solid var(--brown);border-radius:0 var(--r) var(--r) 0;padding:26px 32px}
.pain-goal h3{font-size:18px;margin-bottom:8px;color:var(--brown-deep)}
.pain-goal p{font-size:14.5px;color:var(--ink-2)}
@media (max-width:900px){.pain-grid{grid-template-columns:1fr}}

/* ---------- 设计思路：竖向时间线 ---------- */
.design{padding:96px 0 84px;background:var(--card);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.tl{position:relative;margin-top:20px;padding-left:34px}
.tl::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:var(--line)}
.tl-item{position:relative;padding-bottom:52px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{position:absolute;left:-34px;top:8px;width:16px;height:16px;border-radius:50%;background:var(--card);border:3px solid var(--brown)}
.tl-when{display:inline-block;font-size:12.5px;letter-spacing:.22em;color:var(--brown-soft);margin-bottom:8px}
.tl-body h3{font-size:21px;margin-bottom:12px}
.tl-body p{color:var(--ink-2);font-size:15px;line-height:2;max-width:720px}
.tl-media{margin-top:22px;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm);max-width:720px}
.tl-media img{width:100%;height:auto}
@media (max-width:640px){.tl{padding-left:24px}.tl-dot{left:-26px}}

/* ---------- 功能与实现：编号横排行 ---------- */
.impl{padding:96px 0 56px}
.impl-list{border-top:1px solid var(--line)}
.impl-row{display:grid;grid-template-columns:120px 1fr;gap:36px;align-items:center;padding:34px 10px;border-bottom:1px solid var(--line);transition:background .35s}
.impl-row:hover{background:var(--card)}
.impl-num{font-family:var(--font-serif);font-size:52px;font-weight:700;color:var(--brown-bg);line-height:1;transition:color .35s}
.impl-row:hover .impl-num{color:var(--brown)}
.impl-copy h3{font-size:19px;margin-bottom:8px}
.impl-copy p{font-size:14.5px;color:var(--ink-2);line-height:1.95;max-width:680px}
@media (max-width:640px){.impl-row{grid-template-columns:64px 1fr;gap:18px}.impl-num{font-size:34px}}

/* ---------- 成果数据：浅底大数字横排 ---------- */
.result{background:var(--brown-bg);padding:88px 0;border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.result .sec-eyebrow{color:var(--brown-soft)}
.res-strip{display:grid;grid-template-columns:repeat(4,1fr);margin-top:44px;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.res-item{padding:34px 26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:transparent;transition:background .35s}
.res-item:hover{background:var(--card)}
.res-item b{font-family:var(--font-serif);font-size:clamp(34px,3.6vw,50px);color:var(--brown-deep);line-height:1;display:block}
.res-item b em{font-style:normal;font-size:.42em;color:var(--brown-soft);margin-left:4px}
.res-item span{display:block;margin-top:12px;font-size:13.5px;color:var(--ink-2);letter-spacing:.05em}
@media (max-width:900px){.res-strip{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.res-strip{grid-template-columns:1fr}}

/* ---------- 更多案例：横排行 ---------- */
.more-case{padding:96px 0 56px}
.mc-list{display:grid;gap:22px;margin-top:10px}
.mc-row{display:grid;grid-template-columns:300px 1fr;gap:28px;background:var(--card);border:1px solid var(--line-2);border-radius:var(--r);overflow:hidden;align-items:center;transition:transform .45s var(--ease),box-shadow .45s var(--ease)}
.mc-row:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.mc-row img{width:100%;height:100%;object-fit:cover;min-height:190px}
.mc-row-body{padding:22px 30px 22px 0}
.mc-row-body h3{font-size:18px;margin:10px 0 8px}
.mc-row-body p{font-size:13.5px;color:var(--ink-2)}
.mc-more{text-align:center;margin-top:40px}
@media (max-width:760px){.mc-row{grid-template-columns:1fr}.mc-row img{height:200px}.mc-row-body{padding:20px 22px 24px}}

/* ---------- 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}}