/* MIBASE · 实验楼风格绿色教育主题（Bootstrap 3） */
:root {
  --edu-green: #0c9;
  --edu-green-dark: #08a86a;
  --edu-green-soft: #e8faf3;
  --edu-ink: #333;
  --edu-muted: #777;
  --edu-line: #e6e6e6;
  --edu-bg: #f7f9f8;
  --edu-card: #fff;
  --nav-h: 50px;
}

html { font-size: 14px; }
body {
  font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--edu-ink);
  background: var(--edu-bg);
  padding-top: var(--nav-h);
  min-height: 100vh;
}

a { color: var(--edu-green-dark); }
a:hover { color: var(--edu-green); text-decoration: none; }

/* —— Navbar（对齐模板 header） —— */
.navbar.header {
  background: #fff;
  border: 0;
  border-bottom: 1px solid var(--edu-line);
  box-shadow: 0 1px 3px rgba(0,0,0,.04);
  min-height: var(--nav-h);
  margin-bottom: 0;
}
.navbar.header .navbar-brand {
  height: var(--nav-h);
  padding: 8px 15px;
  display: flex;
  align-items: center;
}
.navbar.header .navbar-brand img { height: 32px; width: auto; }
.navbar.header .navbar-nav > li > a {
  color: #555;
  font-size: 15px;
  padding-top: 15px;
  padding-bottom: 15px;
}
.navbar.header .navbar-nav > li > a:hover,
.navbar.header .navbar-nav > li.active > a {
  color: var(--edu-green-dark);
  background: transparent;
}
.navbar.header .btns .btn {
  margin-left: 6px;
  margin-top: 9px;
  border-radius: 3px;
  padding: 5px 14px;
}
.navbar.header .sign-in {
  background: #fff;
  border-color: var(--edu-green);
  color: var(--edu-green-dark);
}
.navbar.header .sign-up,
.navbar.header .btn-primary.sign-up {
  background: var(--edu-green);
  border-color: var(--edu-green);
  color: #fff;
}
.navbar.header .sign-up:hover { background: var(--edu-green-dark); border-color: var(--edu-green-dark); color: #fff; }
.navbar.header .navbar-toggle { border-color: #ddd; margin-top: 8px; }
.navbar.header .navbar-toggle .icon-bar { background: #888; }

/* —— Banner —— */
.navbar-banner {
  background: linear-gradient(120deg, #0a8f66 0%, #12c48a 45%, #7dd3a8 100%);
  color: #fff;
  padding: 48px 0 56px;
  margin-bottom: 0;
}
.navbar-banner .banner-title {
  font-size: 36px;
  font-weight: 700;
  margin: 0 0 14px;
  line-height: 1.25;
}
.navbar-banner .banner-lead {
  font-size: 16px;
  opacity: .92;
  margin-bottom: 24px;
  max-width: 36em;
  line-height: 1.7;
}
.navbar-banner .course-btn,
.btn-edu {
  display: inline-block;
  background: #fff;
  color: var(--edu-green-dark) !important;
  border: 0;
  border-radius: 4px;
  padding: 12px 28px;
  font-size: 16px;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(0,0,0,.12);
}
.navbar-banner .course-btn:hover,
.btn-edu:hover { background: #f4fff9; color: #067a55 !important; }
.banner-panel {
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 6px;
  padding: 18px 20px;
  backdrop-filter: blur(4px);
}
.banner-panel a {
  display: flex;
  justify-content: space-between;
  color: #fff;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,.18);
  font-size: 14px;
}
.banner-panel a:last-child { border-bottom: 0; }
.banner-panel a:hover { opacity: .9; }

/* —— Introduce / features —— */
.introduce-container {
  background: #fff;
  padding: 36px 0;
  border-bottom: 1px solid var(--edu-line);
}
.introduce-unit {
  text-align: center;
  padding: 16px 12px;
}
.introduce-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: var(--edu-green-soft);
  color: var(--edu-green-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
}
.introduce-span {
  display: block;
  color: #555;
  font-size: 14px;
  line-height: 1.5;
}

/* —— Section headers —— */
.item-header {
  margin: 36px 0 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.item-header .line {
  display: inline-block;
  width: 48px;
  height: 2px;
  background: var(--edu-line);
}
.item-header .item-title {
  font-size: 22px;
  font-weight: 600;
  color: #444;
}

/* —— Cards / path-item / course —— */
.line-and-laboratory { padding: 8px 0 40px; }
.path-item,
.edu-card {
  background: var(--edu-card);
  border: 1px solid var(--edu-line);
  border-radius: 4px;
  padding: 16px;
  margin-bottom: 20px;
  transition: box-shadow .2s, border-color .2s;
  display: block;
  color: inherit;
  height: 100%;
  min-height: 120px;
}
.path-item:hover,
.edu-card:hover {
  border-color: #b8e8d4;
  box-shadow: 0 4px 16px rgba(8,168,106,.12);
  color: inherit;
}
.path-name,
.edu-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 8px;
  color: #333;
}
.path-course-num,
.edu-card .meta {
  color: var(--edu-muted);
  font-size: 13px;
}
.edu-card .price {
  margin-top: 10px;
  color: var(--edu-green-dark);
  font-weight: 700;
  font-size: 15px;
}
.edu-card .card-shot {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 3px;
  margin-bottom: 12px;
  background: var(--edu-green-soft);
}
.edu-card p {
  margin: 0;
  color: #666;
  font-size: 13px;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* —— Page body —— */
.page-main { padding: 24px 0 48px; }
.page-main .page-title {
  margin: 0 0 20px;
  font-size: 24px;
  font-weight: 600;
}

/* —— Forms / auth —— */
.auth-box-edu {
  max-width: 440px;
  margin: 40px auto;
  background: #fff;
  border: 1px solid var(--edu-line);
  border-radius: 4px;
  padding: 28px 28px 24px;
  box-shadow: 0 2px 12px rgba(0,0,0,.04);
}
.auth-box-edu h1 { margin: 0 0 8px; font-size: 22px; }
.auth-tabs {
  display: flex;
  gap: 0;
  margin: 18px 0 16px;
  border-bottom: 1px solid var(--edu-line);
}
.auth-tab {
  flex: 1;
  border: 0;
  background: transparent;
  padding: 10px;
  color: #888;
  font-size: 14px;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
}
.auth-tab.on {
  color: var(--edu-green-dark);
  border-bottom-color: var(--edu-green);
  font-weight: 600;
}
.btn-edu-primary {
  background: var(--edu-green);
  border-color: var(--edu-green);
  color: #fff;
  width: 100%;
  padding: 10px;
  font-size: 15px;
}
.btn-edu-primary:hover { background: var(--edu-green-dark); border-color: var(--edu-green-dark); color: #fff; }
.code-row { display: flex; gap: 8px; }
.code-row input { flex: 1; }
.captcha-img-btn {
  padding: 0;
  border: 1px solid #ddd;
  border-radius: 3px;
  overflow: hidden;
  background: #fff;
}
.captcha-img-btn img { display: block; height: 34px; width: 100px; }

/* —— Flash —— */
.flash {
  padding: 10px 14px;
  border-radius: 3px;
  margin: 16px 0;
}
.flash.ok { background: #e8faf3; color: #067a55; border: 1px solid #b8e8d4; }
.flash.err { background: #fff1f0; color: #c0392b; border: 1px solid #f5c6cb; }

/* —— Footer —— */
.footer-edu {
  background: #2b2f33;
  color: #aab;
  padding: 40px 0 0;
  margin-top: 40px;
  font-size: 13px;
}
.footer-edu a { color: #ccd; }
.footer-edu a:hover { color: #fff; }
.footer-edu .footer-slogan {
  font-size: 16px;
  color: #fff;
  margin-bottom: 16px;
}
.footer-edu .footer-logo {
  display: inline-block;
  margin-bottom: 16px;
  line-height: 1;
}
.footer-edu .footer-logo img {
  height: 45px;
  width: auto;
  display: block;
}
.footer-edu .col-title {
  color: #fff;
  font-weight: 600;
  margin-bottom: 12px;
  font-size: 14px;
}
.footer-edu .footer-col a {
  display: inline-block;
  margin-bottom: 8px;
  line-height: 1.5;
}
.footer-edu .copyright {
  border-top: 1px solid #3a3f44;
  margin-top: 28px;
  padding: 16px 0;
  text-align: center;
  color: #889;
  font-size: 12px;
}
.footer-edu .copyright .beian { color: #889; margin-left: 8px; }
.footer-edu .copyright .beian:hover { color: #ccc; }
.footer-edu .ver-line { margin: 0 8px; color: #555; }

/* —— Utilities keep VIP pages working —— */
.muted { color: var(--edu-muted); }
.wrap { /* bootstrap container preferred */ }
.btn-primary { background: var(--edu-green); border-color: var(--edu-green); }
.btn-primary:hover, .btn-primary:focus { background: var(--edu-green-dark); border-color: var(--edu-green-dark); }
.btn-ghost, .btn-default.edu {
  background: #fff;
  border: 1px solid var(--edu-green);
  color: var(--edu-green-dark);
}
.table > thead > tr > th { border-bottom-color: var(--edu-line); }
.panel { border-color: var(--edu-line); box-shadow: none; }
.panel-heading { background: #fafafa; }

.home-sec-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.home-sec-head h2 { margin: 0; font-size: 20px; }
.pager-edu { text-align: center; margin: 24px 0; }

@media (max-width: 767px) {
  .navbar-banner .banner-title { font-size: 26px; }
  .banner-panel { margin-top: 24px; }
}