/* ============================================================
   case-02.html —— 鹤壁精工机械案例
   布局：居中胶囊首屏 / 纵向时间轴 / 前后对照胶带卡
        / 宽幅设计图 / 图标方块功能 / 方块数字 / 评价气泡
   ============================================================ */

/* ---------- ① 居中首屏 ---------- */
.c2-hero{ padding:50px 0 26px; text-align:center; }
.c2-hero-inner{ max-width:900px; margin:0 auto; }
.c2-hero .crumb{ justify-content:center; margin-bottom:16px; }
.c2-hero h1{ margin:16px 0; }
.c2-hero-sub{ max-width:640px; margin:0 auto; }
.c2-hero-photo{
  margin-top:30px; border-radius:var(--r-l); overflow:hidden;
  box-shadow:var(--shadow-l);
}
.c2-hero-photo img{ width:100%; aspect-ratio:4/3; object-fit:cover; }

/* ---------- ② 时间轴 ---------- */
.c2-tl{ padding:36px 0; }
.c2-tl .sec-head{ margin-bottom:34px; }
.c2-tl .sec-head h2{ margin:10px 0; }
.c2-timeline{
  list-style:none; margin:0; padding:0 0 0 28px; position:relative; max-width:760px;
}
.c2-timeline::before{
  content:""; position:absolute; left:8px; top:6px; bottom:6px;
  border-left:3px dashed var(--yellow);
}
.c2-timeline li{ position:relative; padding:0 0 26px 26px; }
.c2-timeline li::before{
  content:""; position:absolute; left:-28px; top:6px;
  width:18px; height:18px; border-radius:50%;
  background:var(--white); border:4px solid var(--pink);
}
.c2-timeline time{
  display:inline-block; font-size:13px; font-weight:800; color:var(--pink-deep);
  background:var(--pink-soft); padding:4px 12px; border-radius:var(--r-full); margin-bottom:8px;
}
.c2-timeline h3{ margin-bottom:6px; }
.c2-timeline p{ font-size:14px; margin:0; }

/* ---------- ③ 前后对照 ---------- */
.c2-before{ padding:36px 0; }
.c2-before .sec-head{ margin-bottom:34px; }
.c2-before .sec-head h2{ margin:10px 0; }
.c2-bf-wrap{
  display:grid; grid-template-columns:1fr auto 1fr; gap:24px; align-items:stretch;
}
.c2-bf-col{
  background:var(--white); border-radius:var(--r-l); padding:30px 26px 26px;
  position:relative; box-shadow:var(--shadow-s);
}
.c2-bf-old{ border:2px dashed #D8CFC6; }
.c2-bf-new{ border:2px dashed var(--green); background:var(--green-soft); }
.c2-tape{
  position:absolute; top:-14px; left:24px;
  background:var(--pink); color:#fff; font-size:13px; font-weight:800;
  padding:5px 16px; border-radius:6px; transform:rotate(-2deg);
}
.c2-tape-green{ background:var(--green-deep); transform:rotate(2deg); }
.c2-bf-col h3{ margin:8px 0 14px; }
.c2-bf-col ul{ display:grid; gap:9px; }
.c2-bf-col ul li{
  font-size:14px; padding-left:18px; position:relative;
}
.c2-bf-old li::before{ content:"✕"; position:absolute; left:0; color:#B0A89E; font-weight:800; }
.c2-bf-new li::before{ content:"✓"; position:absolute; left:0; color:var(--green-deep); font-weight:800; }
.c2-bf-vs{
  align-self:center; width:52px; height:52px; border-radius:50%;
  background:var(--yellow); color:#fff; font-weight:800;
  display:flex; align-items:center; justify-content:center;
  box-shadow:var(--shadow-s);
}

/* ---------- ④ 设计亮点 ---------- */
.c2-design{ padding:30px 0; }
.c2-design .sec-head{ margin-bottom:24px; }
.c2-design .sec-head h2{ margin:10px 0; }
.c2-design-photo{ border-radius:var(--r-l); overflow:hidden; box-shadow:var(--shadow-l); }
.c2-design-photo img{ width:100%; aspect-ratio:16/9; object-fit:cover; }
.c2-design-note{ max-width:720px; margin:18px auto 0; text-align:center; font-size:14px; }

/* ---------- ⑤ 功能图标方块 ---------- */
.c2-feat{ padding:36px 0; }
.c2-feat-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.c2-f-box{
  background:var(--white); border-radius:var(--r-m); padding:24px 22px;
  border:2px dashed transparent; transition:border-color .25s ease, transform .25s ease;
}
.c2-f-box:hover{ border-color:var(--pink-mid); transform:translateY(-4px); }
.c2-f-ic{
  display:inline-flex; width:44px; height:44px; border-radius:12px;
  background:var(--yellow-soft); align-items:center; justify-content:center; margin-bottom:12px;
}
.c2-f-ic svg{ width:22px; height:22px; stroke:var(--yellow-deep); }
.c2-f-box h3{ font-size:17px; margin-bottom:8px; }
.c2-f-box p{ font-size:13px; margin:0; }

/* ---------- ⑥ 成果方块数字 ---------- */
.c2-result{ padding:40px 0; }
.c2-result-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:16px;
}
.c2-rb{
  background:var(--white); border-radius:var(--r-m); padding:26px 18px; text-align:center;
  border:2px dashed var(--green-mid);
}
.c2-rb b{ display:block; font-size:38px; color:var(--green-deep); }
.c2-rb b span{ font-size:18px; }
.c2-rb p{ font-size:13px; margin:8px 0 0; }

/* ---------- ⑦ 评价气泡 ---------- */
.c2-say{ padding:20px 0; }
.c2-say-wrap{ display:flex; justify-content:center; }
.c2-bubble{
  position:relative; max-width:640px; background:var(--pink-soft);
  border-radius:28px 28px 28px 6px; padding:30px 32px;
}
.c2-bubble p{ font-size:16px; color:var(--ink); font-weight:600; }
.c2-bubble b{ display:block; color:var(--pink-deep); }
.c2-bubble span{ font-size:12px; opacity:.7; }

/* ---------- ⑧ 相关 chips ---------- */
.c2-rel{ padding:30px 0; }
.c2-rel .sec-head h2{ margin:10px 0; }
.c2-rel-row{ display:flex; flex-wrap:wrap; gap:12px; }
.c2-rel-chip{
  background:var(--white); border:2px dashed var(--yellow); border-radius:var(--r-full);
  padding:11px 22px; font-size:14px; font-weight:700; color:var(--ink);
  transition:all .25s ease;
}
.c2-rel-chip:hover{ background:var(--yellow-soft); transform:translateY(-2px); }

/* ---------- ⑨ CTA ---------- */
.c2-cta{ padding:56px 0; background:var(--green-soft); border-radius:var(--r-xl) var(--r-xl) 0 0; }
.c2-cta-inner{ text-align:center; }
.c2-cta-btns{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; margin-top:20px; }

/* ---------- 响应式 ---------- */
@media (max-width:1023.98px){
  .c2-bf-wrap{ grid-template-columns:1fr; }
  .c2-bf-vs{ margin:0 auto; }
  .c2-feat-grid{ grid-template-columns:repeat(2,1fr); }
  .c2-result-grid{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:639.98px){
  .c2-feat-grid{ grid-template-columns:1fr; }
  .c2-result-grid{ grid-template-columns:1fr 1fr; }
}