/* ============================================================
   jixieyuan-beikao.css — 机械员备考资料页
   前缀 jxbk- · 牛仔裤复古风
   ============================================================ */

/* ---------- Hero ---------- */
.jxbk-hero { padding: 130px 0 90px; }
.jxbk-hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.jxbk-hero-text h1 { font-size: clamp(34px,5vw,54px); line-height: 1.2; margin: 18px 0; }
.jxbk-hero-text h1 i { font-style: normal; color: var(--stitch); }
.jxbk-hero-text p { font-size: 17px; color: #d7e0ea; max-width: 520px; }
.jxbk-hero-cta { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 14px; }
.jxbk-hero-pic { transform: rotate(1deg); }

/* ---------- 机械分类 ---------- */
.jxbk-cat { padding: 90px 0; }
.jxbk-cat-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; margin-top: 10px; }
.jxbk-cat-col {
  background: var(--paper-100); border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 24px 20px; box-shadow: var(--shadow-sm); transition: transform .28s var(--ease);
}
.jxbk-cat-col:hover { transform: translateY(-5px); }
.jxbk-cat-col h3 { font-size: 17px; color: var(--denim-800); margin-bottom: 8px; padding-bottom: 8px; border-bottom: 2px solid var(--rust); }
.jxbk-cat-col p { font-size: 13.5px; color: var(--ink-soft); line-height: 1.7; }

/* ---------- 设备管理 ---------- */
.jxbk-mgmt { padding: 90px 0; }
.jxbk-mgmt-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 22px; margin-top: 10px; }
.jxbk-m-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 26px 24px; box-shadow: var(--shadow-sm); position: relative; overflow: hidden;
}
.jxbk-m-card::before {
  content:""; position:absolute; right:-20px; bottom:-20px; width:90px; height:90px;
  background: repeating-linear-gradient(45deg, var(--denim-100) 0 8px, transparent 8px 16px);
  opacity: .5;
}
.jxbk-m-card h3 { font-size: 18px; margin-bottom: 8px; }
.jxbk-m-card p { font-size: 14.5px; color: var(--ink-soft); position: relative; }

/* ---------- 口诀 ---------- */
.jxbk-quote { padding: 90px 0; }
.jxbk-q {
  background: var(--paper-100); border-left: 5px solid var(--rust); border-radius: 0 var(--r-md) var(--r-md) 0;
  padding: 22px 26px; margin-bottom: 16px; box-shadow: var(--shadow-sm);
  font-family: var(--font-serif); font-size: 18px; color: var(--denim-90);
}
.jxbk-q p { color: var(--ink); }
.jxbk-q b { color: var(--rust); }

/* ---------- 避坑 ---------- */
.jxbk-pit { padding: 90px 0; }
.jxbk-pit-list { display: flex; flex-direction: column; gap: 16px; margin-top: 10px; }
.jxbk-pit-item {
  display: flex; gap: 18px; align-items: flex-start;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r-md); padding: 20px 22px;
}
.jxbk-pit-no { font-family: var(--font-serif); font-size: 28px; font-weight: 900; color: var(--denim-100); line-height: 1; flex: none; }
.jxbk-pit-item p { font-size: 15px; color: var(--ink-soft); }
.jxbk-pit-item b { color: var(--denim-900); }

/* ---------- 刷题节奏 ---------- */
.jxbk-rhythm { padding: 90px 0; }
.jxbk-rhythm-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.jxbk-rhythm-text .kicker { display:block; }
.jxbk-rhythm-text h2 { font-size: clamp(26px,3.2vw,36px); margin: 8px 0 18px; }
.jxbk-rhythm-text h2 i { font-style: normal; color: var(--denim-600); }
.jxbk-rhythm-text ul { display: flex; flex-direction: column; gap: 12px; }
.jxbk-rhythm-text li { padding-left: 18px; position: relative; color: var(--ink-soft); }
.jxbk-rhythm-text li::before { content:""; position:absolute; left:0; top:9px; width:9px; height:9px; border-radius:50%; background: var(--rust); }
.jxbk-rhythm-text b { color: var(--denim-900); }
.jxbk-rhythm-more { margin-top: 18px; font-size: 14.5px; color: var(--ink-soft); }

/* ---------- CTA ---------- */
.jxbk-cta { padding: 90px 0; }
.jxbk-cta-inner { max-width: 760px; margin: 0 auto; text-align: center; }
.jxbk-cta-inner h2 { font-size: clamp(26px,3.4vw,38px); margin-bottom: 14px; }
.jxbk-cta-inner p { color: #d7e0ea; font-size: 16px; }
.jxbk-cta-btns { margin-top: 28px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .jxbk-hero-grid, .jxbk-rhythm-grid { grid-template-columns: 1fr; gap: 36px; }
  .jxbk-cat-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .jxbk-hero { padding: 110px 0 60px; }
  .jxbk-cat-grid, .jxbk-mgmt-grid { grid-template-columns: 1fr; }
}
/* ---------- CTA 内浅色链接 ---------- */
.cta-link { color: var(--stitch); text-decoration: underline; text-underline-offset: 3px; }
.cta-link:hover { color: var(--paper-100); }
/* ---------- 牛仔蓝底上的描边按钮 ---------- */
.btn-outline--hero { color: var(--paper-100); border-color: var(--paper-100); }
.btn-outline--hero:hover { background: var(--paper-100); color: var(--denim-800); }

/* ---------- 高频数值速记 ---------- */
.jxbk-num { padding: 90px 0; }
.jxbk-num-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; margin-top: 10px; }
.jxbk-num-card {
  background: var(--paper-100); border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 22px 18px; text-align: center; box-shadow: var(--shadow-sm); transition: transform .25s var(--ease);
}
.jxbk-num-card:hover { transform: translateY(-5px); }
.jxbk-num-v {
  display: inline-block; font-family: var(--font-serif); font-size: 22px; font-weight: 900;
  color: var(--paper-100); background: var(--rust); padding: 4px 16px; border-radius: var(--r-sm); margin-bottom: 12px;
}
.jxbk-num-card p { font-size: 13.5px; color: var(--ink-soft); line-height: 1.65; }
@media (max-width: 1080px){ .jxbk-num-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px){ .jxbk-num-grid { grid-template-columns: 1fr; } }