:root {
  --red:#b30718;
  --red2:#c7192b;
  --gold:#d69a2d;
  --ink:#20242b;
  --muted:#68707c;
  --line:#e3e7ec;
  --soft:#f6f8fb;
  --blue:#123d72;
  --shadow:0 10px 30px rgba(27,39,58,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;
  color:var(--ink);
  background:#fff;
  font-size:16px;
  line-height:1.75;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.container{width:min(1200px,calc(100% - 48px));margin:0 auto}

/* 顶部 */
.topbar{
  height:72px;background:#fff;border-bottom:1px solid #eef0f3;
  display:flex;align-items:center;position:sticky;top:0;z-index:30;
}
.topbar .inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand img{width:205px}
nav{display:flex;align-items:center;gap:36px;font-size:15px;font-weight:600;color:#303746}
nav a{padding:24px 0;white-space:nowrap;position:relative}
nav a.active{color:var(--red)}
nav a.active::after{
  content:"";position:absolute;left:10%;right:10%;bottom:15px;height:2px;background:var(--red);border-radius:2px
}
nav a:hover{color:var(--red)}
.consult-btn{
  background:#dda035;color:#fff;padding:11px 24px;border-radius:4px;
  font-size:15px;font-weight:700;box-shadow:0 4px 10px rgba(221,160,53,.22)
}

/* 面包屑 */
.crumb{height:44px;background:#f5f6f8;color:#606774;display:flex;align-items:center;font-size:14px}
.crumb .container{display:flex;gap:9px;align-items:center}
.crumb b{color:#8f96a1;font-weight:500}

/* 列表页头 */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(105deg,#f2f5f9 0%,#edf2f8 56%,#dde8f4 100%);
  border-bottom:1px solid #e4e8ed;
}
.page-hero::after{
  content:"";position:absolute;right:-110px;top:-150px;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,61,114,.12),rgba(18,61,114,0) 66%);
}
.page-hero .container{position:relative;z-index:2;padding:48px 0 42px}
.hero-kicker{font-family:Georgia,serif;font-size:22px;font-weight:700;color:var(--red);margin-bottom:7px}
.page-hero h1{margin:0;font-size:38px;line-height:1.25;letter-spacing:-.5px}
.page-hero p{max-width:760px;margin:13px 0 0;color:#4e5662;font-size:17px;line-height:1.85}
.hero-stats{display:flex;gap:42px;margin-top:27px}
.hero-stat{padding-right:42px;border-right:1px solid #cfd6df}
.hero-stat:last-child{border-right:0}
.hero-stat b{font-size:24px;color:var(--red);margin-right:4px}
.hero-stat span{font-size:13px;color:#6a717c}

/* 筛选区 */
.filter-wrap{border-bottom:1px solid #eceef1;background:#fff}
.filter-inner{padding:19px 0;display:flex;align-items:center;justify-content:space-between;gap:20px}
.filters{display:flex;gap:10px;flex-wrap:wrap}
.filter{
  border:1px solid #dfe3e8;background:#fff;border-radius:4px;padding:8px 17px;
  font-size:14px;color:#4b525d;cursor:pointer
}
.filter.active{background:var(--red);border-color:var(--red);color:#fff;font-weight:700}
.result-count{font-size:13px;color:#858b94}

/* 主体 */
main{background:#fff;padding:30px 0 46px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:18px}
.section-head h2{margin:0;font-size:24px;line-height:1.4}
.section-head p{margin:5px 0 0;font-size:14px;color:#717884}
.section-head .sort{font-size:13px;color:#777e89}

/* 卡片 */
.course-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.course-card{
  display:grid;grid-template-columns:245px minmax(0,1fr);
  border:1px solid var(--line);border-radius:9px;overflow:hidden;background:#fff;
  box-shadow:0 6px 22px rgba(27,39,58,.045);
  transition:.25s ease;
}
.course-card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(27,39,58,.095);border-color:#d6dce3}
.course-image{position:relative;min-height:250px;background:#e9edf2;overflow:hidden}
.course-image img{width:100%;height:100%;object-fit:cover;transition:.35s ease}
.course-card:hover .course-image img{transform:scale(1.035)}
.course-image::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,20,34,.02),rgba(10,20,34,.14));
}
.degree-tag{
  position:absolute;z-index:2;left:14px;top:14px;background:rgba(179,7,24,.95);color:#fff;
  min-width:42px;height:32px;padding:0 10px;display:grid;place-items:center;border-radius:3px;
  font-family:Georgia,serif;font-size:15px;font-weight:700;letter-spacing:.4px
}
.hot-badge{
  position:absolute;z-index:2;right:12px;top:14px;background:#dda035;color:#fff;
  font-size:11px;font-weight:700;padding:4px 8px;border-radius:3px
}
.course-body{padding:20px 22px 18px;display:flex;flex-direction:column;min-width:0}
.course-topline{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.course-body h2{font-size:20px;line-height:1.45;margin:0 0 3px}
.course-body h2 a:hover{color:var(--red)}
.course-en{font-size:12px;color:#7a818c;margin-bottom:11px;line-height:1.5}
.course-body p{font-size:14px;color:#4e555f;line-height:1.85;margin:0 0 15px}
.course-meta{display:flex;gap:7px;flex-wrap:wrap;margin-top:auto}
.course-meta span{
  background:#f4f6f8;border:1px solid #e7eaee;color:#626975;
  font-size:11px;padding:4px 8px;border-radius:3px
}
.course-actions{display:flex;align-items:center;justify-content:space-between;border-top:1px solid #edf0f3;margin-top:16px;padding-top:14px}
.detail-btn{font-size:13px;color:var(--red);font-weight:700}
.detail-btn b{font-size:17px;vertical-align:-1px}
.consult-link{font-size:12px;color:#666e79}
.consult-link:hover{color:var(--red)}

/* 专业选择辅助区 */
.guide{
  margin-top:28px;border:1px solid var(--line);border-radius:9px;overflow:hidden;
  display:grid;grid-template-columns:1.2fr .8fr;background:linear-gradient(100deg,#f8fafc,#f1f5f9);
}
.guide-copy{padding:28px 32px}
.guide-copy h3{margin:0 0 7px;font-size:22px}
.guide-copy p{margin:0;color:#59616c;font-size:14px;line-height:1.85}
.guide-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
.guide-point{background:#fff;border:1px solid #e5e9ee;border-radius:6px;padding:11px 12px}
.guide-point b{display:block;color:var(--red);font-size:15px;margin-bottom:2px}
.guide-point span{font-size:11px;color:#737a85}
.guide-cta{
  border-left:1px solid #dfe4ea;padding:24px 28px;display:flex;flex-direction:column;justify-content:center;
  background:rgba(255,255,255,.45)
}
.guide-cta strong{font-size:18px;margin-bottom:5px}
.guide-cta p{font-size:13px;color:#6d7480;margin:0 0 15px}
.guide-buttons{display:flex;gap:10px}
.guide-buttons a{padding:9px 18px;border-radius:4px;font-size:13px;font-weight:700}
.guide-buttons .primary{background:var(--red);color:#fff}
.guide-buttons .secondary{border:1px solid #bcc3cc;background:#fff}

/* 咨询 */
.contact-strip{
  margin-top:16px;border:1px solid #e2e6eb;border-radius:9px;padding:22px 26px;
  display:flex;justify-content:space-between;align-items:center;gap:24px
}
.contact-strip h3{font-size:18px;margin:0 0 4px}
.contact-strip p{font-size:13px;color:#717884;margin:0}
.contact-actions{display:flex;gap:10px}
.contact-actions a{font-size:13px;font-weight:700;border-radius:4px;padding:9px 18px}
.contact-actions a:first-child{background:var(--red);color:#fff}
.contact-actions a:last-child{border:1px solid #bfc5cd}

/* footer */
footer{background:linear-gradient(90deg,#242832,#1e222b);color:#fff;padding:24px 0 18px}
.foot-grid{display:grid;grid-template-columns:1.1fr 1.8fr .55fr;gap:30px;align-items:start}
.foot-brand{font-family:Georgia,serif;letter-spacing:1.6px;font-size:13px;line-height:1.1}
.foot-brand small{display:block;font-family:Arial,sans-serif;letter-spacing:0;margin-top:12px;line-height:1.7;font-size:10px;color:#dfe2e7}
.foot-links{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;font-size:11px;padding-top:9px}
.qr{text-align:center;font-size:9px}
.qr-box{width:63px;height:63px;background:
  linear-gradient(90deg,#fff 8px,transparent 8px) 0 0/16px 16px,
  linear-gradient(#fff 8px,transparent 8px) 0 0/16px 16px,#111;
  border:5px solid #fff;margin:4px auto 5px}
.copyright{font-size:9px;color:#aeb4be;margin-top:12px;border-top:1px solid rgba(255,255,255,.08);padding-top:9px}

@media(max-width:1050px){
  .container{width:min(100% - 36px,1200px)}
  nav{display:none}
  .course-grid{grid-template-columns:1fr}
  .course-card{grid-template-columns:270px minmax(0,1fr)}
  .guide{grid-template-columns:1fr}
  .guide-cta{border-left:0;border-top:1px solid #dfe4ea}
}
@media(max-width:720px){
  .container{width:min(100% - 24px,1200px)}
  .page-hero .container{padding:34px 0 30px}
  .page-hero h1{font-size:30px}
  .page-hero p{font-size:15px}
  .hero-stats{gap:20px;flex-wrap:wrap}
  .hero-stat{padding-right:20px}
  .filter-inner{align-items:flex-start;flex-direction:column}
  .course-card{grid-template-columns:1fr}
  .course-image{min-height:220px;max-height:260px}
  .guide-points{grid-template-columns:1fr}
  .contact-strip{flex-direction:column;align-items:flex-start}
  .foot-grid{grid-template-columns:1fr}
  .foot-links{grid-template-columns:repeat(3,1fr)}
}

/* ===== v2：课程列表页整体美观度优化 ===== */

/* 页面头部加入学院/校园背景视觉 */
.page-hero {
  min-height: 292px;
  display:flex;
  align-items:center;
  background:#eef3f8;
  position:relative;
  overflow:hidden;
}

.page-hero::before {
  content:"";
  position:absolute;
  top:0;
  right:0;
  width:45%;
  height:100%;
  background-image:url('/images/courses-bg-01.jpg');
  background-size:cover;
  background-position:center;
  opacity:.95;
}

.page-hero::after {
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,
      #f2f5f9 0%,
      #f2f5f9 42%,
      rgba(242,245,249,.93) 51%,
      rgba(242,245,249,.60) 64%,
      rgba(242,245,249,.10) 82%,
      rgba(242,245,249,0) 100%);
}

.page-hero .container {
  position:relative;
  z-index:2;
  padding:48px 0 44px;
}

.page-hero h1 {
  font-size:40px;
  margin-bottom:8px;
}

.page-hero p {
  max-width:650px;
  font-size:16px;
  line-height:1.9;
}

.hero-stats {
  margin-top:24px;
}

/* 主体节奏优化 */
main {
  padding:36px 0 52px;
}

.section-head {
  margin-bottom:22px;
}

.section-head h2 {
  font-size:26px;
}

.section-head p {
  font-size:15px;
}

.course-grid {
  gap:22px;
}

.course-card {
  grid-template-columns:255px minmax(0,1fr);
  min-height:274px;
  border-radius:10px;
}

.course-body {
  padding:22px 24px 20px;
}

.course-body h2 {
  font-size:21px;
}

.course-en {
  font-size:13px;
}

.course-body p {
  font-size:14px;
  line-height:1.9;
}

.course-meta span {
  font-size:12px;
  padding:4px 9px;
}

.course-actions {
  margin-top:18px;
  padding-top:15px;
}

.detail-btn {
  font-size:14px;
}

.consult-link {
  font-size:13px;
}

/* 重新设计选课辅助区 */
.guide {
  margin-top:34px;
  display:grid;
  grid-template-columns:minmax(0,1.55fr) minmax(330px,.75fr);
  border:1px solid #dde3e9;
  border-radius:12px;
  overflow:hidden;
  background:#fff;
  box-shadow:0 10px 30px rgba(27,39,58,.06);
}

.guide-main {
  padding:32px 36px 34px;
  background:linear-gradient(135deg,#fbfcfd 0%,#f4f7fa 100%);
}

.guide-kicker {
  color:var(--red);
  font-family:Georgia,serif;
  font-weight:700;
  font-size:13px;
  letter-spacing:1px;
  margin-bottom:7px;
}

.guide-main h3 {
  margin:0;
  font-size:24px;
  line-height:1.45;
}

.guide-intro {
  margin:10px 0 0;
  max-width:720px;
  color:#58606b;
  font-size:14px;
  line-height:1.9;
}

.guide-steps {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
  margin-top:24px;
}

.guide-step {
  background:#fff;
  border:1px solid #e4e8ed;
  border-radius:8px;
  padding:16px 15px 15px;
  min-height:142px;
  transition:.2s ease;
}

.guide-step:hover {
  transform:translateY(-2px);
  border-color:#d5dbe2;
  box-shadow:0 8px 18px rgba(27,39,58,.05);
}

.step-no {
  font-family:Georgia,serif;
  color:var(--red);
  font-size:18px;
  font-weight:700;
  margin-bottom:8px;
}

.guide-step b {
  display:block;
  font-size:15px;
  margin-bottom:5px;
}

.guide-step span {
  display:block;
  color:#6a717c;
  font-size:12px;
  line-height:1.75;
}

.guide-consult {
  padding:31px 30px;
  background:linear-gradient(145deg,#b30718 0%,#8f0817 100%);
  color:#fff;
  display:flex;
  flex-direction:column;
  justify-content:center;
}

.consult-label {
  width:max-content;
  padding:4px 8px;
  border:1px solid rgba(255,255,255,.35);
  border-radius:3px;
  font-size:11px;
  letter-spacing:.5px;
  margin-bottom:11px;
}

.guide-consult h4 {
  margin:0;
  font-size:22px;
  line-height:1.45;
}

.guide-consult p {
  margin:9px 0 15px;
  font-size:13px;
  line-height:1.85;
  color:rgba(255,255,255,.86);
}

.consult-points {
  display:flex;
  flex-wrap:wrap;
  gap:7px;
  margin-bottom:18px;
}

.consult-points span {
  font-size:11px;
  padding:4px 8px;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.16);
  border-radius:3px;
}

.guide-primary {
  display:block;
  text-align:center;
  background:#fff;
  color:var(--red);
  border-radius:4px;
  padding:10px 15px;
  font-size:14px;
  font-weight:700;
}

.guide-secondary {
  display:block;
  text-align:center;
  color:#fff;
  font-size:12px;
  margin-top:10px;
  opacity:.9;
}

/* 删除旧咨询板块后不再保留其空白 */
.contact-strip {
  display:none !important;
}

@media(max-width:1050px) {
  .page-hero::before {
    width:60%;
  }

  .page-hero::after {
    background:
      linear-gradient(90deg,
        #f2f5f9 0%,
        #f2f5f9 48%,
        rgba(242,245,249,.86) 66%,
        rgba(242,245,249,.22) 100%);
  }

  .guide {
    grid-template-columns:1fr;
  }

  .guide-consult {
    padding:26px 30px 28px;
  }
}

@media(max-width:760px) {
  .page-hero {
    min-height:320px;
  }

  .page-hero::before {
    width:100%;
    opacity:.38;
  }

  .page-hero::after {
    background:rgba(242,245,249,.84);
  }

  .page-hero h1 {
    font-size:32px;
  }

  .page-hero p {
    font-size:15px;
  }

  .course-card {
    grid-template-columns:1fr;
  }

  .guide-main {
    padding:25px 22px;
  }

  .guide-steps {
    grid-template-columns:1fr;
  }

  .guide-step {
    min-height:auto;
  }
}