/* ==========================================================================
   cozunet.com · 电子案例页 css/pages/case-dianzi.css
   版式：杂志风左标题右信息卡 → 三列痛点 → 通栏图+浮板设计
         → 竖轴时间线实现 → 深棕横排大数字 → 三卡更多
   ========================================================================== */

/* ---------- 杂志风 hero ---------- */
.dz-hero{padding:130px 0 60px;background:var(--paper);border-bottom:1px solid var(--line-2)}
.dz-hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:start}
.dz-hero-copy h1{margin:14px 0 18px;font-size:clamp(30px,4.4vw,52px);line-height:1.25;max-width:640px}
.dz-hero-desc{color:var(--ink-2);font-size:15.5px;line-height:2;max-width:560px}
.dz-hero-card{background:var(--card);border:1px solid var(--line-2);border-radius:18px;padding:26px 30px;box-shadow:var(--shadow);position:sticky;top:96px}
.dz-hero-card dl div{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--line-2)}
.dz-hero-card dl div:last-child{border-bottom:0}
.dz-hero-card dt{font-size:13px;color:var(--muted);flex:none;padding-top:3px}
.dz-hero-card dd{font-size:14px;font-weight:500;text-align:right}
@media (max-width:900px){.dz-hero-grid{grid-template-columns:1fr;gap:32px}.dz-hero-card{position:static}}

/* ---------- 痛点三列 ---------- */
.dz-pain{padding:80px 0;background:var(--card);border-top:1px solid var(--line-2)}
.dz-pain-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dz-pain-cards > div{background:var(--paper);border:1px solid var(--line-2);border-radius:var(--r);padding:32px 28px}
.dz-pain-cards h3{font-size:18px;margin-bottom:10px}
.dz-pain-cards p{font-size:13.5px;color:var(--ink-2);line-height:1.95}
@media (max-width:900px){.dz-pain-cards{grid-template-columns:1fr}}

/* ---------- 通栏图+浮板 ---------- */
.dz-design{padding:80px 0 40px;background:var(--paper)}
.dz-design-media{border-radius:18px;overflow:hidden;box-shadow:var(--shadow);margin-bottom:-80px;position:relative;z-index:1}
.dz-design-media img{width:100%;height:360px;object-fit:cover}
.dz-design-panel{position:relative;z-index:2;background:var(--card);border:1px solid var(--line-2);border-radius:18px;padding:40px 44px;box-shadow:var(--shadow);max-width:720px;margin-left:auto}
.dz-design-panel h2{margin:12px 0 18px}
.dz-p{color:var(--ink-2);font-size:14.5px;line-height:2.05;margin-bottom:14px}
@media (max-width:760px){.dz-design-media{margin-bottom:0;height:230px}.dz-design-panel{margin:20px 0 0;padding:28px 24px}}

/* ---------- 时间线 ---------- */
.dz-impl{padding:90px 0;background:var(--card);border-top:1px solid var(--line-2)}
.dz-timeline{position:relative;max-width:780px;margin:0 auto;padding-left:30px}
.dz-timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:var(--line)}
.dz-tl-item{position:relative;padding:0 0 36px 26px}
.dz-tl-item:last-child{padding-bottom:0}
.dz-tl-dot{position:absolute;left:-30px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--brown);border:3px solid var(--brown-bg)}
.dz-tl-item b{font-size:12.5px;letter-spacing:.18em;color:var(--brown-soft);display:block;margin-bottom:6px}
.dz-tl-item h3{font-size:18px;margin-bottom:8px}
.dz-tl-item p{font-size:14px;color:var(--ink-2);line-height:1.95}

/* ---------- 成果深棕横排 ---------- */
.dz-result{background:var(--brown);padding:90px 0}
.dz-result .sec-eyebrow{color:rgba(255,255,255,.6)}
.dz-result .sec-eyebrow::before{background:rgba(255,255,255,.4)}
.dz-result h2{color:#fff;margin-top:12px}
.dz-bignums{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:46px}
.dz-bignums div{text-align:center;padding:20px 10px}
.dz-bignums b{font-family:var(--font-serif);font-size:clamp(34px,4vw,52px);color:#fff;display:block;line-height:1.1}
.dz-bignums b em{font-style:normal;font-size:.38em;color:rgba(255,255,255,.6);margin-left:3px}
.dz-bignums span{display:block;margin-top:12px;font-size:13px;color:rgba(255,255,255,.66)}
@media (max-width:900px){.dz-bignums{grid-template-columns:1fr 1fr}}

/* ---------- 更多三卡 ---------- */
.dz-more{padding:90px 0 40px;background:var(--paper)}
.dz-more-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.dz-more-grid > a{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)}
.dz-more-grid > a:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.dz-more-grid img{width:100%;height:180px;object-fit:cover}
.dz-more-body{padding:18px 20px 22px}
.dz-more-body h3{font-size:16px;margin-top:10px}
@media (max-width:820px){.dz-more-grid{grid-template-columns:1fr}}

/* ---------- CTA ---------- */
.dz-cta{background:var(--brown-deep);padding:72px 0;margin-top:50px}
.dz-cta-in{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.dz-cta-copy h2{color:#fff;font-size:clamp(23px,2.8vw,32px);margin-bottom:10px}
.dz-cta-copy p{color:rgba(255,255,255,.68);font-size:14.5px;letter-spacing:.05em}
.dz-cta-btns{display:flex;gap:16px;flex-wrap:wrap}

/* ---------- 客户常问 ---------- */
.dz-faq{padding:90px 0;background:var(--card);border-top:1px solid var(--line-2)}
.dz-faq-list{max-width:860px;margin:40px auto 0;display:grid;gap:14px}
.dz-faq details{background:var(--paper);border:1px solid var(--line-2);border-radius:12px;padding:20px 26px}
.dz-faq summary{font-size:15.5px;font-weight:600;cursor:pointer;list-style:none;position:relative;padding-right:28px}
.dz-faq summary::-webkit-details-marker{display:none}
.dz-faq summary::after{content:"+";position:absolute;right:0;top:0;font-size:20px;color:var(--brown-soft);line-height:1.2}
.dz-faq details[open] summary::after{content:"-"}
.dz-faq details p{margin-top:12px;font-size:14px;color:var(--ink-2);line-height:1.95}

/* ---------- 售后与维护 ---------- */
.dz-care{padding:80px 0;background:var(--paper);border-top:1px solid var(--line-2)}
.dz-care-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:40px}
.dz-care-grid > div{background:var(--card);border:1px solid var(--line-2);border-radius:var(--r);padding:26px 24px}
.dz-care-grid h3{font-size:16px;margin-bottom:10px}
.dz-care-grid p{font-size:13px;color:var(--ink-2);line-height:1.9}
@media (max-width:900px){.dz-care-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.dz-care-grid{grid-template-columns:1fr}}

/* ---------- 客户反馈 ---------- */
.dz-quote{padding:80px 0;background:var(--card);border-top:1px solid var(--line-2)}
.dz-quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:40px}
.dz-quote blockquote{background:var(--paper);border:1px solid var(--line-2);border-left:3px solid var(--brown);border-radius:12px;padding:28px 30px}
.dz-quote p{font-size:14.5px;line-height:2;color:var(--ink);margin-bottom:14px}
.dz-quote cite{font-size:12.5px;color:var(--muted);font-style:normal;letter-spacing:.05em}
@media (max-width:760px){.dz-quote-grid{grid-template-columns:1fr}}