/* ==========================================================================
   cozunet.com · 教育案例页 css/pages/case-jiaoyu.css
   版式：左文右图分屏 hero → 顶部横条概览 → 引用+三卡痛点
         → 三列设计卡片 → 2x2 实现 → 深棕左文右数成果 → 三卡更多
   ========================================================================== */

/* ---------- 分屏 hero ---------- */
.jy-hero{padding:120px 0 0;background:var(--paper)}
.jy-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:end}
.jy-hero-copy h1{margin:14px 0 18px;font-size:clamp(28px,4vw,46px);max-width:640px}
.jy-hero-desc{color:var(--ink-2);font-size:15.5px;line-height:2;max-width:580px;margin-bottom:28px}
.jy-hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.jy-hero-media{border-radius:18px 18px 0 0;overflow:hidden;box-shadow:var(--shadow)}
.jy-hero-media img{width:100%;height:480px;object-fit:cover}
@media (max-width:900px){.jy-hero-grid{grid-template-columns:1fr}.jy-hero-media{border-radius:18px}.jy-hero-media img{height:320px}}

/* ---------- 概览横条 ---------- */
.jy-strip{background:var(--brown);padding:26px 0}
.jy-strip-list{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.jy-strip-list li{display:flex;flex-direction:column;gap:6px;border-left:1px solid rgba(255,255,255,.16);padding-left:16px}
.jy-strip-list b{font-size:12px;letter-spacing:.18em;color:rgba(255,255,255,.55);font-weight:500}
.jy-strip-list span{font-size:14.5px;color:#fff;font-weight:500}
@media (max-width:900px){.jy-strip-list{grid-template-columns:1fr 1fr;gap:14px}.jy-strip-list li:last-child{grid-column:span 2}}

/* ---------- 痛点 ---------- */
.jy-pain{padding:90px 0;background:var(--card)}
.jy-quote{max-width:820px;margin:0 auto 56px;padding:30px 36px;background:var(--brown-bg);border-radius:16px;position:relative}
.jy-quote::before{content:"“";position:absolute;left:18px;top:-6px;font-family:var(--font-serif);font-size:72px;color:var(--brown-soft);opacity:.35}
.jy-quote p{font-size:17px;line-height:1.9;color:var(--ink);font-family:var(--font-serif);font-style:italic}
.jy-quote cite{display:block;margin-top:12px;font-size:13px;color:var(--muted);font-style:normal;letter-spacing:.05em}
.jy-pain-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.jy-pain-cards > div{background:var(--paper);border:1px solid var(--line-2);border-radius:var(--r);padding:30px 26px}
.jy-p-no{display:inline-flex;width:38px;height:38px;border-radius:50%;background:var(--brown);color:#fff;align-items:center;justify-content:center;font-size:14px;margin-bottom:18px}
.jy-pain-cards h3{font-size:18px;margin-bottom:10px}
.jy-pain-cards p{font-size:13.5px;color:var(--ink-2);line-height:1.9}
@media (max-width:900px){.jy-pain-cards{grid-template-columns:1fr}}

/* ---------- 设计思路三列 ---------- */
.jy-design{padding:90px 0;background:var(--paper);border-top:1px solid var(--line-2)}
.jy-d-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.jy-d-cards figure{border-radius:14px;overflow:hidden;margin-bottom:18px;box-shadow:var(--shadow-sm)}
.jy-d-cards img{width:100%;height:220px;object-fit:cover}
.jy-d-cards h3{font-size:18px;margin-bottom:10px}
.jy-d-cards p{font-size:13.5px;color:var(--ink-2);line-height:1.95}
@media (max-width:900px){.jy-d-cards{grid-template-columns:1fr}.jy-d-cards img{height:240px}}

/* ---------- 实现 2x2 ---------- */
.jy-impl{padding:90px 0;background:var(--card);border-top:1px solid var(--line-2)}
.jy-impl-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.jy-impl-grid > div{background:var(--paper);border:1px solid var(--line-2);border-radius:var(--r);padding:32px 30px;transition:transform .4s var(--ease),box-shadow .4s var(--ease)}
.jy-impl-grid > div:hover{transform:translateY(-5px);box-shadow:var(--shadow-sm)}
.jy-ic{width:48px;height:48px;border-radius:12px;background:var(--brown);color:#fff;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.jy-ic svg{width:24px;height:24px}
.jy-impl-grid h3{font-size:17px;margin-bottom:10px}
.jy-impl-grid p{font-size:13.5px;color:var(--ink-2);line-height:1.9}
@media (max-width:760px){.jy-impl-grid{grid-template-columns:1fr}}

/* ---------- 成果 深棕 ---------- */
.jy-result{background:var(--brown);padding:90px 0}
.jy-res-in{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center}
.jy-res-copy .sec-eyebrow{color:rgba(255,255,255,.6)}
.jy-res-copy .sec-eyebrow::before{background:rgba(255,255,255,.4)}
.jy-res-copy h2{color:#fff;margin:14px 0 16px}
.jy-res-copy p{color:rgba(255,255,255,.7);font-size:14.5px;line-height:2}
.jy-res-stats{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.jy-res-stats div{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--r);padding:24px 22px}
.jy-res-stats b{font-family:var(--font-serif);font-size:clamp(28px,3.2vw,40px);color:#fff;display:block;line-height:1}
.jy-res-stats b em{font-style:normal;font-size:.5em;color:rgba(255,255,255,.6);margin-left:3px}
.jy-res-stats span{font-size:12.5px;color:rgba(255,255,255,.66);display:block;margin-top:10px}
@media (max-width:860px){.jy-res-in{grid-template-columns:1fr;gap:34px}}

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

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

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

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

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