/* ============================================================
 * 石家庄初高中陪跑 —— 样式（温暖陪伴风）
 * 想换配色，改下面的 --primary 等几个变量就行
 * ============================================================ */

:root {
  --bg: #FFF9F4;
  --bg-warm: #FFF1E6;
  --card: #FFFFFF;
  --ink: #3A2E2A;
  --ink-soft: #7C6A61;
  --primary: #E8622A;
  --primary-deep: #D9342B;
  --line: #F1E3D8;
  --par: #E8622A;
  --stu: #2E9E8F;
  --gk: #2D6BD6;
  --zk: #7A5AF8;
  --radius: 16px;
  --shadow: 0 6px 22px rgba(180, 120, 80, 0.10);
  --shadow-h: 0 12px 30px rgba(180, 120, 80, 0.18);
  --maxw: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- 顶部：品牌 + 搜索 ---------- */
.header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 249, 244, 0.95);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-in {
  max-width: var(--maxw); margin: 0 auto; padding: 10px 20px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.h-brand { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.logo { height: 42px; width: auto; display: block; border-radius: 8px; }
.brand { display: flex; flex-direction: column; line-height: 1.2; }
.brand b { font-size: 18px; letter-spacing: .5px; }
.brand span { font-size: 12px; color: var(--ink-soft); }

/* 搜索框 */
.search { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.s-input {
  display: flex; align-items: center; background: #fff;
  border: 1.5px solid #C9D8EA; border-radius: 999px; padding: 0 6px 0 15px; transition: .18s;
}
.s-input:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(232,98,42,.12); }
.s-input input {
  border: none; outline: none; background: transparent; padding: 9px 0;
  width: 178px; font-size: 14px; color: var(--ink); font-family: inherit;
}
.s-go { border: none; background: transparent; color: var(--ink-soft); cursor: pointer; display: flex; padding: 6px; }
.s-go:hover { color: var(--primary); }
.s-sel select {
  appearance: none; -webkit-appearance: none; border: none; cursor: pointer;
  background-color: var(--primary); color: #fff; font-weight: 600; font-size: 14px;
  padding: 11px 34px 11px 16px; border-radius: 999px; font-family: inherit;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat: no-repeat; background-position: right 13px center;
}
.s-sel select:hover { background-color: var(--primary-deep); }

/* 导航条 */
.nav-bar { border-top: 1px solid var(--line); }
.nav-in {
  max-width: var(--maxw); margin: 0 auto; padding: 0 14px;
  display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none;
}
.nav-in::-webkit-scrollbar { display: none; }
.nav-in a {
  padding: 12px 14px; font-size: 15px; color: var(--ink-soft);
  white-space: nowrap; border-bottom: 2px solid transparent; transition: .15s;
}
.nav-in a:hover { color: var(--primary-deep); }
.nav-in a.on { color: var(--primary-deep); border-bottom-color: var(--primary); font-weight: 600; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1200px 400px at 80% -10%, #FFE2CE 0%, rgba(255,226,206,0) 60%),
    linear-gradient(180deg, var(--bg-warm) 0%, var(--bg) 100%);
  padding: 60px 0 52px; text-align: center;
}
.hero .kicker {
  display: inline-block; font-size: 14px; color: var(--primary-deep);
  background: #fff; border: 1px solid var(--line); padding: 5px 14px; border-radius: 999px; margin-bottom: 18px;
}
.hero h1 { font-size: clamp(28px, 5vw, 46px); margin: 0 0 14px; letter-spacing: 1px; }
.hero p { font-size: clamp(15px, 2.4vw, 18px); color: var(--ink-soft); max-width: 620px; margin: 0 auto 26px; }
.hero-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 12px 26px; border-radius: 999px;
  font-size: 16px; font-weight: 600; transition: .18s; cursor: pointer; border: 2px solid transparent;
}
.btn-main { background: var(--primary); color: #fff; box-shadow: var(--shadow); }
.btn-main:hover { background: var(--primary-deep); transform: translateY(-1px); }
.btn-ghost { background: #fff; color: var(--primary-deep); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--primary); }

/* ---------- 区块 ---------- */
.section { padding: 56px 0; }
.sec-head { text-align: center; margin-bottom: 34px; }
.sec-head h2 { font-size: clamp(22px, 3.6vw, 30px); margin: 0 0 8px; }
.sec-head p { color: var(--ink-soft); margin: 0; }

/* 三个卖点 */
.feats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 22px; text-align: center; box-shadow: var(--shadow);
}
.feat .ico { font-size: 30px; }
.feat h3 { margin: 10px 0 8px; font-size: 18px; }
.feat p { margin: 0; color: var(--ink-soft); font-size: 15px; }

/* 栏目入口 */
.cols { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.col-card {
  border-radius: var(--radius); padding: 26px 24px; color: #fff; position: relative;
  overflow: hidden; box-shadow: var(--shadow); transition: .2s; display: block;
}
.col-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-h); }
.col-par { background: linear-gradient(135deg, #F0793C, #D9342B); }
.col-stu { background: linear-gradient(135deg, #3CB4A3, #1F8075); }
.col-gk { background: linear-gradient(135deg, #4A8BF0, #2456B8); }
.col-zk { background: linear-gradient(135deg, #9B7BFF, #5B3FD1); }
.col-card h3 { margin: 0 0 8px; font-size: 21px; }
.col-card p { margin: 0 0 16px; opacity: .95; font-size: 15px; }
.col-card .go { font-weight: 700; }

/* 文章卡片 */
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 22px 20px; box-shadow: var(--shadow); transition: .2s; display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-h); border-color: #F3D6C3; }
.card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.tag { font-size: 12px; padding: 3px 10px; border-radius: 999px; color: #fff; }
.c-par { background: var(--par); }
.c-stu { background: var(--stu); }
.c-gk  { background: var(--gk); }
.c-zk  { background: var(--zk); }
.date { font-size: 13px; color: var(--ink-soft); }
.card-title { font-size: 19px; margin: 0 0 10px; line-height: 1.5; }
.card-ex { color: var(--ink-soft); font-size: 15px; margin: 0 0 16px; flex: 1; }
.readmore { color: var(--primary-deep); font-weight: 600; font-size: 14px; }

/* 列表页 / 搜索页 */
.page-head { padding: 44px 0 8px; text-align: center; }
.page-head h1 { font-size: clamp(24px, 4vw, 34px); margin: 0 0 8px; }
.page-head p { color: var(--ink-soft); margin: 0; }
.empty { color: var(--ink-soft); text-align: center; padding: 40px 0; }

/* 文章详情 */
.article-page { padding: 40px 0 60px; }
.art-head { max-width: 760px; margin: 0 auto 26px; }
.art-title { font-size: clamp(24px, 4vw, 34px); line-height: 1.4; margin: 14px 0 12px; }
.art-meta { color: var(--ink-soft); font-size: 14px; }
.art-body {
  max-width: 760px; margin: 0 auto; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 34px 34px 26px; box-shadow: var(--shadow); font-size: 17px;
}
.art-body p { margin: 0 0 18px; }
.art-body h3 { font-size: 20px; margin: 30px 0 12px; padding-left: 12px; border-left: 4px solid var(--primary); }
.related { max-width: 900px; margin: 44px auto 0; }
.related-t { font-weight: 700; margin-bottom: 16px; font-size: 18px; }
.back { display: inline-block; margin-top: 26px; color: var(--primary-deep); font-weight: 600; }

/* 联系 / 留言 */
.contact { background: var(--bg-warm); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); scroll-margin-top: 120px; }
.contact-in { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: start; }
.contact h2 { margin: 0 0 10px; }
.contact .lead { color: var(--ink-soft); margin: 0 0 22px; }
.wx-row { display: flex; align-items: center; gap: 16px; margin-top: 18px; }
.qr-box {
  width: 128px; height: 128px; border-radius: 12px; background: #fff; border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center; overflow: hidden; flex: 0 0 auto;
}
.qr-box img { width: 100%; height: 100%; object-fit: contain; }
.wx-text b { color: var(--primary-deep); font-size: 18px; }
.wx-text small { display: block; color: var(--ink-soft); }

.form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.form label { display: block; font-size: 14px; color: var(--ink-soft); margin: 0 0 6px; }
.form input, .form textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 11px 13px;
  font-size: 15px; font-family: inherit; color: var(--ink); background: #FFFDFB; margin-bottom: 14px;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--primary); }
.form textarea { min-height: 96px; resize: vertical; }
.form .btn-main { width: 100%; border: none; }
.form-msg { font-size: 14px; margin-top: 10px; min-height: 20px; }
.form-msg.good { color: #1F8075; }
.form-msg.warn { color: var(--primary-deep); }

/* 页脚 */
.footer { padding: 30px 0; text-align: center; color: var(--ink-soft); font-size: 14px; }
.footer .fbrand { font-weight: 600; color: var(--ink); }

/* ---------- 客服悬浮 ---------- */
.kefu { position: fixed; right: 20px; bottom: 22px; z-index: 90; display: flex; flex-direction: column; align-items: flex-end; gap: 10px; }
.kefu-btn {
  display: flex; flex-direction: column; align-items: center; gap: 1px;
  background: var(--primary); color: #fff; border: none; border-radius: 16px;
  padding: 10px 14px; cursor: pointer; box-shadow: var(--shadow-h); font-family: inherit; font-size: 12px;
  transition: .18s;
}
.kefu-btn:hover { background: var(--primary-deep); transform: translateY(-2px); }
.kefu-panel {
  display: none; width: 236px; background: #fff; border: 1px solid var(--line);
  border-radius: 16px; box-shadow: var(--shadow-h); overflow: hidden;
}
.kefu-panel.show { display: block; }
.kefu-head { background: var(--primary); color: #fff; padding: 10px 14px; font-weight: 600; font-size: 15px; }
.kefu-body { padding: 14px; text-align: center; }
.kefu-desc { font-size: 13px; color: var(--ink-soft); margin: 0 0 10px; }
.kefu-qr { width: 148px; height: 148px; margin: 0 auto 10px; }
.kefu-qr img { width: 100%; height: 100%; object-fit: contain; }
.kefu-wx { font-size: 14px; }
.kefu-wx b { color: var(--primary-deep); }
.kefu-link { display: inline-block; margin-top: 8px; font-size: 13px; color: var(--primary-deep); }

/* ---------- 响应式 ---------- */
@media (max-width: 820px) {
  .feats, .cols, .grid, .contact-in { grid-template-columns: 1fr; }
  .header-in { padding: 10px 16px; }
  .brand span { display: none; }
  .search { width: 100%; margin-left: 0; flex-wrap: wrap; }
  .s-input { flex: 1 1 150px; min-width: 0; overflow: hidden; }
  .s-input input { width: 100%; min-width: 0; }
  .s-sel { flex: 0 0 auto; }
  .hero { padding: 44px 0 38px; }
  .section { padding: 42px 0; }
  .art-body { padding: 24px 20px; }
  .kefu { right: 14px; bottom: 16px; }
}