/* ============================================================
   case-03.html —— 汤阴德利五金案例
   布局：错位拼图首屏 / 圆角痛点卡 / 文件夹标签栏目
        / 参数表示意 / 标签云功能 / 评价 / CTA
   ============================================================ */

/* ---------- ① 拼图首屏 ---------- */
.c3-hero{ padding:50px 0 30px; }
.c3-hero-grid{
  display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:center;
}
.c3-hero-text h1{ margin:16px 0 14px; }
.c3-hero-btns{ display:flex; gap:12px; flex-wrap:wrap; margin-top:20px; }
.c3-collage{ position:relative; height:380px; }
.c3-coll{
  position:absolute; border-radius:var(--r-m); box-shadow:var(--shadow-m);
  border:6px solid #fff;
}
.c3-coll-1{ width:62%; left:0; top:20px; transform:rotate(-4deg); }
.c3-coll-1 img{ width:100%; aspect-ratio:4/3; object-fit:cover; border-radius:14px; }
.c3-coll-2{ width:56%; right:0; bottom:0; transform:rotate(3deg); z-index:2; }
.c3-coll-2 img{ width:100%; aspect-ratio:16/9; object-fit:cover; border-radius:14px; }
.c3-coll-badge{
  position:absolute; left:6%; top:0; z-index:3;
  background:var(--green); color:#fff; border-radius:20px;
  padding:10px 18px; font-size:13px; line-height:1.4; text-align:center;
  transform:rotate(-3deg); box-shadow:0 10px 24px rgba(79,163,86,.35);
}
.c3-coll-badge b{ font-size:20px; }

/* ---------- ② 痛点 ---------- */
.c3-pain{ padding:30px 0; }
.c3-pain .sec-head{ margin-bottom:30px; }
.c3-pain .sec-head h2{ margin:10px 0; }
.c3-pain-row{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.c3-pain-card{
  background:var(--yellow-soft); border-radius:var(--r-l); padding:26px 24px;
  transition:transform .25s ease;
}
.c3-pain-card:nth-child(2){ transform:translateY(18px); background:var(--pink-soft); }
.c3-pain-card:nth-child(3){ background:var(--green-soft); }
.c3-pain-card:hover{ transform:translateY(-4px); }
.c3-pain-card:nth-child(2):hover{ transform:translateY(14px); }
.c3-pain-card b{ display:block; font-size:18px; color:var(--ink); margin-bottom:8px; }
.c3-pain-card p{ font-size:14px; margin:0; }

/* ---------- ③ 文件夹标签 ---------- */
.c3-did{ padding:30px 0; }
.c3-did .sec-head{ margin-bottom:30px; }
.c3-did .sec-head h2{ margin:10px 0; }
.c3-tabs{ display:grid; grid-template-columns:repeat(4,1fr); gap:18px; }
.c3-tab{
  background:var(--white); border-radius:0 18px 18px 18px; padding:26px 22px;
  border:2px dashed var(--pink-mid); transition:transform .25s ease;
}
.c3-tab:hover{ transform:translateY(-5px); }
.c3-tab-no{
  display:inline-block; background:var(--ink); color:var(--cream);
  font-size:12px; font-weight:800; padding:4px 12px; border-radius:8px 8px 0 0;
  margin-bottom:12px;
}
.c3-tab h3{ font-size:17px; margin-bottom:8px; }
.c3-tab p{ font-size:13px; margin:0; }

/* ---------- ④ 参数表示意 ---------- */
.c3-design{ padding:30px 0; }
.c3-design-wrap{
  display:grid; grid-template-columns:1fr 1fr; gap:40px; align-items:center;
}
.c3-design-text h2{ margin:12px 0; }
.c3-design-table{
  background:var(--white); border-radius:var(--r-l); padding:8px 10px;
  box-shadow:var(--shadow-m); transform:rotate(1deg);
}
.c3-design-table table{ width:100%; border-collapse:collapse; }
.c3-design-table caption{
  font-size:13px; font-weight:800; color:var(--pink-deep); padding:12px 10px 6px; text-align:left;
}
.c3-design-table th, .c3-design-table td{
  text-align:left; font-size:14px; padding:11px 12px; border-bottom:2px dashed var(--cream-2);
}
.c3-design-table th{ color:var(--body); font-weight:600; width:34%; }
.c3-design-table td{ color:var(--ink); font-weight:700; }

/* ---------- ⑤ 功能标签云 ---------- */
.c3-feat{ padding:30px 0; }
.c3-feat .sec-head{ margin-bottom:26px; }
.c3-feat .sec-head h2{ margin:10px 0; }
.c3-feat-cloud{ display:flex; flex-wrap:wrap; gap:12px; justify-content:center; }
.c3-feat-cloud span{
  background:var(--white); border:2px dashed var(--green-mid); border-radius:var(--r-full);
  padding:10px 20px; font-size:14px; font-weight:700;
  transition:all .25s ease;
}
.c3-feat-cloud span:hover{ background:var(--green-soft); transform:translateY(-2px); }

/* ---------- ⑥ 成果 ---------- */
.c3-result{ padding:44px 0; }
.c3-result-row{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; text-align:center; }
.c3-result-row b{ display:block; font-size:42px; color:var(--pink-deep); }
.c3-result-row b span{ font-size:20px; }
.c3-result-row span{ font-size:14px; font-weight:600; }

/* ---------- ⑦ 评价 ---------- */
.c3-say{ padding:10px 0 30px; }
.c3-say-quote{
  max-width:680px; margin:0 auto; background:var(--white);
  border-left:8px solid var(--yellow); border-radius:0 var(--r-m) var(--r-m) 0;
  padding:28px 32px; box-shadow:var(--shadow-s);
}
.c3-say-quote p{ font-size:16px; color:var(--ink); font-weight:600; }
.c3-say-quote b{ color:var(--yellow-deep); display:block; }
.c3-say-quote span{ font-size:12px; opacity:.7; }

/* ---------- ⑧ 相关 ---------- */
.c3-rel{ padding:20px 0; }
.c3-rel .sec-head h2{ margin:10px 0; }
.c3-rel-list{ display:grid; grid-template-columns:repeat(2,1fr); gap:14px; }
.c3-rel-list a{
  display:flex; justify-content:space-between; align-items:center; gap:10px;
  background:var(--white); border-radius:14px; padding:16px 20px;
  font-weight:800; color:var(--ink); border:2px dashed transparent;
  transition:border-color .2s ease, transform .2s ease;
}
.c3-rel-list a:hover{ border-color:var(--pink-mid); transform:translateX(6px); }
.c3-rel-list span{ font-size:13px; font-weight:600; opacity:.7; }

/* ---------- ⑨ CTA ---------- */
.c3-cta{ padding:56px 0; background:var(--yellow-soft); border-radius:var(--r-xl) var(--r-xl) 0 0; }
.c3-cta-inner{ text-align:center; }
.c3-cta-btns{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; margin-top:20px; }

/* ---------- 响应式 ---------- */
@media (max-width:1023.98px){
  .c3-hero-grid{ grid-template-columns:1fr; }
  .c3-pain-row{ grid-template-columns:1fr; }
  .c3-pain-card:nth-child(2){ transform:none; }
  .c3-tabs{ grid-template-columns:repeat(2,1fr); }
  .c3-design-wrap{ grid-template-columns:1fr; }
  .c3-result-row{ grid-template-columns:1fr; gap:24px; }
}
@media (max-width:639.98px){
  .c3-tabs{ grid-template-columns:1fr; }
  .c3-rel-list{ grid-template-columns:1fr; }
  .c3-collage{ height:300px; }
}