/* ================================================================
   mhpn.cn · 备考资料分片私有样式
   覆盖页面：beikao-ziliao / kaoqian-fudao / zhenti /
             kaoqian-jiqiao / fudao-kecheng / kaoqian-dagang
   风格：画册高级风 · 米白 + 深棕 + 墨黑
   说明：本文件只放本分片页面私有布局，共享组件用 base.css。
         6 页模块骨架刻意不同：卡墙 / 对比 / 时间轴 /
         图文对开+表格 / 课程阶梯 / 大纲层级树。
   ================================================================ */

/* ==================== 通用页首 Hero（6 页共用结构） ==================== */
.pk-hero{
  position:relative; min-height:460px; display:flex; align-items:flex-end;
  color:var(--paper-3); overflow:hidden;
}
.pk-hero__bg{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.pk-hero::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(25,21,16,.30) 0%, rgba(25,21,16,.60) 52%, rgba(25,21,16,.88) 100%);
}
.pk-hero__inner{
  position:relative; z-index:2;
  width:min(var(--container), 100% - 48px); margin-inline:auto;
  padding:64px 0 56px;
}
.pk-hero__crumb{
  display:flex; flex-wrap:wrap; gap:8px;
  font-size:13px; color:rgba(244,238,226,.78); margin-bottom:18px;
}
.pk-hero__crumb a{ color:rgba(244,238,226,.78); }
.pk-hero__crumb a:hover{ color:var(--gold); }
.pk-hero__crumb .sep{ color:rgba(244,238,226,.38); }
.pk-hero__crumb .cur{ color:var(--paper-3); }
.pk-hero h1{
  font-size:clamp(30px,4.6vw,52px); color:var(--paper-3);
  max-width:860px; line-height:1.28;
}
.pk-hero__sub{
  margin-top:16px; max-width:700px;
  font-size:16px; line-height:1.9; color:rgba(244,238,226,.86);
}
.pk-hero__tags{ margin-top:22px; display:flex; flex-wrap:wrap; gap:10px; }

/* ==================== 通用图文对开 ==================== */
.pk-split{
  display:grid; grid-template-columns:1fr 1fr;
  gap:48px; align-items:center;
}
.pk-split--rev .pk-split__fig{ order:2; }
.pk-split__fig img{
  border-radius:var(--radius-lg); box-shadow:var(--shadow);
  transition:transform var(--transition), box-shadow var(--transition);
}
.pk-split__fig:hover img{ transform:translateY(-4px); box-shadow:var(--shadow); }
.pk-split__fig figcaption{
  font-size:12.5px; color:var(--brown-3); margin-top:10px; letter-spacing:.08em;
}
.pk-split__copy h2{ font-size:clamp(22px,2.6vw,30px); margin-bottom:16px; }
.pk-split__copy p{ color:var(--ink-2); margin-bottom:14px; font-size:15.5px; }

/* 要点小清单（图文对开内用） */
.pk-dots{ margin-top:18px; }
.pk-dots li{
  display:flex; gap:12px; padding:11px 0;
  border-bottom:1px dashed var(--line); font-size:14.5px; color:var(--ink-2);
}
.pk-dots li:last-child{ border-bottom:0; }
.pk-dots li::before{
  content:""; flex:none; width:8px; height:8px; margin-top:11px;
  background:var(--gold); transform:rotate(45deg);
}

/* ==================== 页1 beikao-ziliao · 资料卡墙 ==================== */
.bk-wall{ display:grid; grid-template-columns:repeat(12,1fr); gap:24px; }
.bk-wall__card{
  background:var(--paper-3); border:1px solid var(--line-soft);
  border-radius:var(--radius-lg); overflow:hidden;
  display:flex; flex-direction:column;
  transition:transform var(--transition), box-shadow var(--transition);
}
.bk-wall__card:hover{ transform:translateY(-6px); box-shadow:var(--shadow); }
.bk-wall__card--big{ grid-column:span 7; }
.bk-wall__card--side{ grid-column:span 5; }
.bk-wall__card--third{ grid-column:span 4; }
.bk-wall__card img{ width:100%; aspect-ratio:16/8.5; object-fit:cover; }
.bk-wall__card--third img{ aspect-ratio:16/9; }
.bk-wall__body{ padding:24px 26px 26px; display:flex; flex-direction:column; flex:1; }
.bk-wall__body h3{ font-size:19px; margin-bottom:10px; }
.bk-wall__body p{ font-size:14.5px; color:var(--ink-2); margin-bottom:12px; }
.bk-wall__body ul{ margin-top:auto; }
.bk-wall__body ul li{
  font-size:13.5px; color:var(--brown-2); padding:5px 0 5px 18px; position:relative;
}
.bk-wall__body ul li::before{
  content:""; position:absolute; left:0; top:12px;
  width:6px; height:6px; background:var(--gold); transform:rotate(45deg);
}

/* ==================== 页2 kaoqian-fudao · 三形式对比 ==================== */
.kf-cmp{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; align-items:stretch; }
.kf-cmp__card{
  position:relative; background:var(--paper-3); border:1px solid var(--line-soft);
  border-radius:var(--radius-lg); overflow:hidden; display:flex; flex-direction:column;
  transition:transform var(--transition), box-shadow var(--transition);
}
.kf-cmp__card:hover{ transform:translateY(-6px); box-shadow:var(--shadow); }
.kf-cmp__card--hot{ border-top:3px solid var(--gold); }
.kf-cmp__badge{
  position:absolute; top:14px; right:-34px; transform:rotate(45deg);
  background:var(--gold); color:var(--ink);
  font-size:11.5px; letter-spacing:.12em; padding:4px 40px;
}
.kf-cmp__head{ padding:26px 26px 16px; }
.kf-cmp__head h3{ font-size:20px; }
.kf-cmp__head .sub{ font-size:13px; color:var(--brown-3); letter-spacing:.1em; margin-top:6px; }
.kf-cmp__rows{ padding:0 26px 26px; margin-top:8px; }
.kf-cmp__row{
  display:flex; gap:12px; padding:11px 0;
  border-top:1px dashed var(--line); font-size:14px; color:var(--ink-2);
}
.kf-cmp__row b{ flex:none; width:60px; color:var(--brown); font-weight:600; }

/* ==================== 页3 zhenti · 节奏提示条 ==================== */
.zt-note{
  display:flex; gap:16px; padding:20px 24px;
  border:1px solid var(--line); border-left:3px solid var(--gold);
  border-radius:var(--radius); background:var(--paper-3);
}
.zt-note__icon{ flex:none; width:22px; height:22px; color:var(--brown-3); margin-top:2px; }
.zt-note p{ font-size:14.5px; color:var(--ink-2); }

/* ==================== 页4 kaoqian-jiqiao · 技巧清单 ==================== */
.jq-tips{ margin-top:6px; }
.jq-tips li{
  display:grid; grid-template-columns:44px 1fr; gap:16px;
  padding:16px 0; border-bottom:1px solid var(--line-soft);
}
.jq-tips li:last-child{ border-bottom:0; }
.jq-tips__no{
  width:40px; height:40px; display:flex; align-items:center; justify-content:center;
  border:1px solid var(--gold); color:var(--brown);
  font-family:var(--font-serif); font-size:16px; border-radius:50%;
}
.jq-tips li h4{ font-size:16px; margin-bottom:4px; }
.jq-tips li p{ font-size:14px; color:var(--ink-2); }

/* ==================== 页5 fudao-kecheng · 课程阶梯 ==================== */
.kc-plans{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; align-items:stretch; }
.kc-plan{
  position:relative; background:var(--paper-3); border:1px solid var(--line-soft);
  border-radius:var(--radius-lg); padding:34px 28px;
  display:flex; flex-direction:column;
  transition:transform var(--transition), box-shadow var(--transition);
}
.kc-plan:hover{ transform:translateY(-6px); box-shadow:var(--shadow); }
.kc-plan--hot{ border-top:3px solid var(--gold); box-shadow:var(--shadow-sm); }
.kc-plan__name{ font-family:var(--font-serif); font-size:21px; }
.kc-plan__hour{ font-size:12.5px; color:var(--brown-3); letter-spacing:.14em; margin-top:6px; }
.kc-plan__desc{ font-size:14px; color:var(--ink-2); margin:14px 0 4px; }
.kc-plan__list{ margin:14px 0 24px; flex:1; }
.kc-plan__list li{
  display:flex; gap:10px; padding:7px 0; font-size:14px; color:var(--ink-2);
}
.kc-plan__list li::before{
  content:""; flex:none; width:7px; height:7px; margin-top:9px;
  background:var(--gold); transform:rotate(45deg);
}

/* ==================== 页6 kaoqian-dagang · 大纲层级树 ==================== */
.dg-layers{ display:grid; gap:18px; }
.dg-layer{
  display:grid; grid-template-columns:180px 1fr; gap:30px; align-items:center;
  background:var(--paper-3); border:1px solid var(--line-soft);
  border-radius:var(--radius-lg); padding:26px 32px;
  transition:border-color var(--transition), transform var(--transition);
}
.dg-layer:hover{ border-color:var(--brown-3); transform:translateX(4px); }
.dg-layer__no{
  font-family:var(--font-serif); font-size:38px; color:var(--gold); line-height:1;
}
.dg-layer__no small{ display:block; font-size:12px; letter-spacing:.2em; color:var(--brown-3); margin-top:6px; }
.dg-layer h3{ font-size:19px; margin-bottom:8px; }
.dg-layer p{ font-size:14.5px; color:var(--ink-2); }
.dg-tags{ margin-top:14px; display:flex; flex-wrap:wrap; gap:8px; }

/* ==================== 通用 FAQ（details 折叠） ==================== */
.pk-faq{ max-width:880px; margin-inline:auto; }
.pk-faq__item{
  border:1px solid var(--line-soft); border-radius:var(--radius-lg);
  background:var(--paper-3); margin-bottom:14px; overflow:hidden;
  transition:box-shadow var(--transition);
}
.pk-faq__item:hover{ box-shadow:var(--shadow-sm); }
.pk-faq__item summary{
  cursor:pointer; list-style:none; position:relative;
  padding:18px 48px 18px 22px;
  font-family:var(--font-serif); font-size:16.5px; color:var(--ink);
}
.pk-faq__item summary::-webkit-details-marker{ display:none; }
.pk-faq__item summary::after{
  content:"+"; position:absolute; right:22px; top:50%;
  transform:translateY(-50%); font-size:22px; color:var(--brown-3);
  transition:transform .3s ease;
}
.pk-faq__item[open] summary::after{ transform:translateY(-50%) rotate(45deg); }
.pk-faq__item .ans{ padding:0 22px 18px; font-size:14.5px; color:var(--ink-2); }

/* ==================== 通用 CTA 深色条 + 预约表单 ==================== */
.pk-cta{ background:var(--ink); color:var(--paper-3); }
.pk-cta__inner{
  display:grid; grid-template-columns:1.05fr .95fr;
  gap:48px; align-items:center; padding:76px 0;
}
.pk-cta h2{ color:var(--paper-3); font-size:clamp(24px,3vw,34px); }
.pk-cta p{ color:rgba(244,238,226,.72); margin-top:14px; font-size:15px; }
.pk-cta__tel{ margin-top:20px; font-family:var(--font-serif); font-size:22px; color:var(--gold); }
.pk-cta .form-row label{ color:rgba(244,238,226,.66); }
.pk-cta .form-row input,
.pk-cta .form-row select,
.pk-cta .form-row textarea{
  background:var(--ink-2); border-color:rgba(244,238,226,.18); color:var(--paper-3);
}
.pk-cta .form-row input:focus,
.pk-cta .form-row select:focus,
.pk-cta .form-row textarea:focus{
  border-color:var(--gold); box-shadow:0 0 0 3px rgba(201,169,106,.18);
}
.pk-cta .form-note{ color:rgba(244,238,226,.45); }

/* ==================== 通用相关链接 ==================== */
.pk-rel__grid{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:14px;
}
.pk-rel__link{
  display:flex; align-items:center; justify-content:space-between; gap:10px;
  padding:16px 20px; border:1px solid var(--line-soft);
  border-radius:var(--radius-lg); background:var(--paper-3);
  font-size:14.5px; color:var(--ink);
  transition:transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.pk-rel__link:hover{
  transform:translateY(-3px); border-color:var(--brown-3); box-shadow:var(--shadow-sm);
}
.pk-rel__link::after{ content:"→"; color:var(--brown-3); flex:none; }

/* ==================== 响应式 1440 / 768 / 375 ==================== */
@media (max-width:1200px){
  .bk-wall{ grid-template-columns:repeat(6,1fr); }
  .bk-wall__card--big{ grid-column:span 6; }
  .bk-wall__card--side{ grid-column:span 3; }
  .bk-wall__card--third{ grid-column:span 2; }
}

@media (max-width:960px){
  .pk-hero{ min-height:380px; }
  .pk-split, .pk-cta__inner{ grid-template-columns:1fr; gap:32px; }
  .pk-split--rev .pk-split__fig{ order:0; }
  .kf-cmp, .kc-plans{ grid-template-columns:1fr; }
  .bk-wall{ grid-template-columns:1fr; }
  .bk-wall__card--big, .bk-wall__card--side, .bk-wall__card--third{ grid-column:span 1; }
  .dg-layer{ grid-template-columns:1fr; gap:12px; }
  .dg-layer__no{ font-size:30px; }
}

@media (max-width:640px){
  .pk-hero__inner{ padding:44px 0 36px; }
  .pk-hero__sub{ font-size:15px; }
  .jq-tips li{ grid-template-columns:36px 1fr; gap:12px; }
  .jq-tips__no{ width:34px; height:34px; font-size:14px; }
  .pk-cta__inner{ padding:52px 0; }
}

/* ============ 追加：说明性小字行 ============ */
.pk-note-line{ margin-top:20px; font-size:14px; color:var(--ink-2); }