/* ============================================
   教育顾问品牌站 - 主样式
   配色：深藏青蓝(信任) + 暖金(品质) + 柔和橙(CTA)
   ============================================ */

:root {
  /* 主色系 */
  --color-primary: #1a3a5c;        /* 深藏青蓝 - 主色 */
  --color-primary-light: #2d557f;  /* 主色浅 */
  --color-primary-dark: #0f2a44;   /* 主色深 */
  --color-accent: #c9a227;         /* 暖金 - 辅助色 */
  --color-cta: #e8762d;            /* 柔和橙 - CTA */
  --color-cta-dark: #c95f1a;       /* CTA 悬停 */

  /* 背景与文字 */
  --color-bg: #ffffff;             /* 纯白背景 */
  --color-bg-alt: #f7f8fa;         /* 浅灰分区背景 */
  --color-text: #2d3748;          /* 正文深灰 */
  --color-text-secondary: #718096; /* 次要文字 */
  --color-text-light: #a0aec0;    /* 最浅文字 */
  --color-border: #e2e8f0;        /* 边框 */

  /* 功能色 */
  --color-success: #38a169;
  --color-warning: #dd6b20;

  /* 字体 */
  --font-cn: "PingFang SC", "Microsoft YaHei", "Source Han Sans", sans-serif;
  --font-en: -apple-system, "Segoe UI", Roboto, sans-serif;

  /* 间距 */
  --max-width: 1200px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(26, 58, 92, 0.08);
  --shadow-md: 0 4px 12px rgba(26, 58, 92, 0.1);
  --shadow-lg: 0 10px 30px rgba(26, 58, 92, 0.12);
}

/* ============ Reset ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-cn), var(--font-en);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--color-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-cta); }

ul, ol { padding-left: 1.2em; }

/* ============ 布局工具 ============ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section { padding: 64px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-title {
  text-align: center;
  margin-bottom: 12px;
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--color-primary);
}
.section-subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 1rem;
  margin-bottom: 40px;
}
.section-title::after {
  content: "";
  display: block;
  width: 50px;
  height: 3px;
  background: var(--color-accent);
  margin: 12px auto 0;
  border-radius: 2px;
}

/* ============ 导航栏 ============ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  transition: box-shadow 0.3s, background 0.3s;
}
.navbar.scrolled { box-shadow: var(--shadow-md); background: rgba(255,255,255,0.98); }
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
}
.navbar-brand .brand-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.1rem; font-weight: 700;
}
.navbar-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.navbar-menu a {
  display: block;
  padding: 8px 14px;
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}
.navbar-menu a:hover, .navbar-menu a.active {
  color: var(--color-primary);
  background: rgba(26, 58, 92, 0.06);
}
.navbar-cta {
  margin-left: 10px;
}
.navbar-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px; height: 40px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}
.navbar-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: 0.3s;
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.25s;
  text-decoration: none;
  min-height: 44px;
}
.btn-primary {
  background: var(--color-cta);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-cta-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}
.btn-sm { padding: 8px 18px; font-size: 0.9rem; }

/* ============ Hero 区 ============ */
.hero {
  padding: 120px 0 80px;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at 80% 20%, rgba(201, 162, 39, 0.15) 0%, transparent 50%);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 50px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-content h1 {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
}
.hero-tagline {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 16px;
  font-weight: 500;
}
.hero-desc {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-photo {
  display: flex;
  justify-content: center;
}
.hero-photo-wrap {
  width: 280px; height: 280px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 6px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  font-size: 5rem;
  color: rgba(255,255,255,0.3);
}

/* ============ 高端二维码卡片 ============ */
.qr-card {
  position: relative;
  width: 300px;
  padding: 6px;
}
.qr-card-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(circle at 50% 40%, rgba(201,162,39,0.35) 0%, rgba(232,118,45,0.15) 40%, transparent 70%);
  filter: blur(20px);
  z-index: 0;
}
.qr-card-inner {
  position: relative;
  z-index: 1;
  background: linear-gradient(145deg, #ffffff 0%, #f8f9fb 100%);
  border-radius: 20px;
  padding: 22px 24px 20px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.25), 0 0 0 1px rgba(255,255,255,0.4) inset;
  text-align: center;
}
.qr-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 16px;
  background: linear-gradient(135deg, var(--color-accent), #e6c14a);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 20px;
  margin-bottom: 16px;
  box-shadow: 0 4px 12px rgba(201,162,39,0.4);
  letter-spacing: 1px;
}
.qr-img-box {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto 16px;
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
}
.qr-img-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.qr-corner {
  position: absolute;
  width: 22px; height: 22px;
  border: 2.5px solid var(--color-accent);
  pointer-events: none;
}
.qr-corner-tl { top: 0; left: 0; border-right: none; border-bottom: none; border-radius: 4px 0 0 0; }
.qr-corner-tr { top: 0; right: 0; border-left: none; border-bottom: none; border-radius: 0 4px 0 0; }
.qr-corner-bl { bottom: 0; left: 0; border-right: none; border-top: none; border-radius: 0 0 0 4px; }
.qr-corner-br { bottom: 0; right: 0; border-left: none; border-top: none; border-radius: 0 0 4px 0; }
.qr-card-info { margin-bottom: 14px; }
.qr-card-name {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 2px;
  letter-spacing: 2px;
}
.qr-card-title {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
}
.qr-card-tags {
  display: flex;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
}
.qr-card-tags span {
  font-size: 0.7rem;
  padding: 2px 8px;
  background: rgba(26,58,92,0.08);
  color: var(--color-primary);
  border-radius: 10px;
  font-weight: 500;
}
.qr-card-tip {
  font-size: 0.78rem;
  color: var(--color-text-light);
  padding-top: 12px;
  border-top: 1px dashed var(--color-border);
  letter-spacing: 0.5px;
}
.qr-card-float {
  position: absolute;
  top: -10px;
  right: -8px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: linear-gradient(135deg, var(--color-cta), var(--color-cta-dark));
  color: #fff;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 20px;
  box-shadow: 0 6px 18px rgba(232,118,45,0.45);
  white-space: nowrap;
  animation: floatPulse 2.5s ease-in-out infinite;
}
.float-dot {
  width: 7px; height: 7px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 6px #fff;
}
@keyframes floatPulse {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-stat .num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-accent);
}
.hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.7); }

/* ============ 卡片 ============ */
.card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
  border: 1px solid var(--color-border);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.card-body { padding: 24px; }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* 服务卡片 */
.service-card {
  text-align: center;
  padding: 32px 24px;
}
.service-icon {
  width: 64px; height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(26,58,92,0.1), rgba(201,162,39,0.1));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem;
}
.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-primary);
}
.service-card p { color: var(--color-text-secondary); font-size: 0.92rem; }

/* ============ 徽章/标签 ============ */
.badge {
  display: inline-block;
  padding: 3px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 20px;
  background: rgba(26, 58, 92, 0.08);
  color: var(--color-primary);
}
.badge-accent { background: rgba(201, 162, 39, 0.12); color: #8a7315; }
.badge-cta { background: rgba(232, 118, 45, 0.12); color: var(--color-cta-dark); }

.tag {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.78rem;
  background: var(--color-bg-alt);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  margin: 2px;
}

/* ============ 文章卡片 ============ */
.article-card { cursor: pointer; }
.article-card .card-cover {
  height: 180px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem; color: rgba(255,255,255,0.5);
}
.article-card .card-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card .card-body .excerpt {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}
.article-meta {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.82rem; color: var(--color-text-light);
}

/* ============ CTA 区 ============ */
.cta-band {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  color: #fff;
}
.cta-band h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 12px; }
.cta-band p { color: rgba(255,255,255,0.8); margin-bottom: 28px; font-size: 1.05rem; }

/* ============ 页脚 ============ */
.footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}
.footer h4 { color: #fff; font-size: 1.05rem; margin-bottom: 16px; }
.footer ul { list-style: none; padding: 0; }
.footer ul li { margin-bottom: 10px; }
.footer ul a { color: rgba(255,255,255,0.7); font-size: 0.9rem; }
.footer ul a:hover { color: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

/* ============ 文章详情 ============ */
.article-detail-header {
  padding: 100px 0 40px;
  background: var(--color-bg-alt);
  text-align: center;
}
.article-detail-header h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 16px;
  max-width: 760px;
  margin-left: auto; margin-right: auto;
}
.article-detail-body {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 20px 60px;
  font-size: 1.05rem;
  line-height: 1.85;
}
.article-detail-body h2 { font-size: 1.4rem; margin: 32px 0 16px; color: var(--color-primary); }
.article-detail-body h3 { font-size: 1.15rem; margin: 24px 0 12px; color: var(--color-primary-light); }
.article-detail-body p { margin-bottom: 18px; }
.article-detail-body ul, .article-detail-body ol { margin-bottom: 18px; }
.article-detail-body li { margin-bottom: 8px; }
.article-detail-body blockquote {
  border-left: 4px solid var(--color-accent);
  background: var(--color-bg-alt);
  padding: 16px 20px;
  margin: 20px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text);
}
.article-detail-body table { width: 100%; border-collapse: collapse; margin: 20px 0; }
.article-detail-body th, .article-detail-body td {
  border: 1px solid var(--color-border);
  padding: 10px 14px;
  text-align: left;
}
.article-detail-body th { background: var(--color-bg-alt); font-weight: 600; }
.back-link { display: inline-flex; align-items: center; gap: 6px; margin-bottom: 20px; color: var(--color-text-secondary); }
.back-link:hover { color: var(--color-primary); }

/* ============ 院校筛选 ============ */
.filter-bar {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 20px 24px;
  margin-bottom: 28px;
  border: 1px solid var(--color-border);
}
.filter-group { margin-bottom: 16px; }
.filter-group:last-child { margin-bottom: 0; }
.filter-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  display: block;
}
.filter-options { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-chip {
  padding: 6px 14px;
  font-size: 0.88rem;
  border: 1.5px solid var(--color-border);
  border-radius: 20px;
  background: var(--color-bg);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}
.filter-chip:hover { border-color: var(--color-primary); color: var(--color-primary); }
.filter-chip.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.search-box {
  width: 100%;
  padding: 10px 16px;
  font-size: 0.95rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
}
.search-box:focus { outline: none; border-color: var(--color-primary); }

.school-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.25s;
}
.school-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--color-primary-light); }
.school-card-header {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  padding: 20px 24px;
}
.school-card-header h3 { font-size: 1.15rem; font-weight: 700; }
.school-card-header .country { font-size: 0.85rem; color: rgba(255,255,255,0.8); }
.school-card-body { padding: 20px 24px; }
.school-card-body .info-row {
  display: flex; justify-content: space-between;
  padding: 6px 0; font-size: 0.9rem;
  border-bottom: 1px dashed var(--color-border);
}
.school-card-body .info-row:last-child { border-bottom: none; }
.school-card-body .info-row .label { color: var(--color-text-secondary); }
.school-card-body .info-row .value { color: var(--color-text); font-weight: 500; text-align: right; }

/* 模态框 */
.modal-overlay {
  display: none;
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 42, 68, 0.6);
  z-index: 2000;
  align-items: center; justify-content: center;
  padding: 20px;
}
.modal-overlay.active { display: flex; }
.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}
.modal-header {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  padding: 24px 28px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  position: relative;
}
.modal-header h3 { font-size: 1.3rem; font-weight: 700; }
.modal-header .country { color: rgba(255,255,255,0.8); font-size: 0.9rem; margin-top: 4px; }
.modal-close {
  position: absolute; top: 16px; right: 20px;
  background: none; border: none; color: #fff;
  font-size: 1.6rem; cursor: pointer; line-height: 1;
}
.modal-body { padding: 24px 28px; }
.modal-body .info-row {
  display: flex; padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}
.modal-body .info-row:last-child { border-bottom: none; }
.modal-body .info-row .label {
  width: 110px; flex-shrink: 0;
  color: var(--color-text-secondary); font-weight: 600;
}
.modal-body .info-row .value { color: var(--color-text); }
.modal-body .description { margin: 16px 0; color: var(--color-text-secondary); line-height: 1.7; }

/* ============ 表单 ============ */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}
.form-label .required { color: #e53e3e; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 11px 14px;
  font-size: 16px;
  font-family: inherit;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.2s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}
.form-textarea { resize: vertical; min-height: 100px; }

/* 联系页布局 */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(320px, 460px);
  justify-content: center;
  gap: 40px;
}
.contact-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 32px;
  border: 1px solid var(--color-border);
}
.contact-info { text-align: center; }
.qr-placeholder {
  width: 200px; height: 200px;
  margin: 20px auto;
  background: var(--color-bg-alt);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-light); font-size: 0.85rem;
}
.contact-info .phone {
  font-size: 1.4rem; font-weight: 700; color: var(--color-primary);
  margin: 16px 0 8px;
}

/* 服务流程 */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.process-step { text-align: center; }
.process-step .step-num {
  width: 48px; height: 48px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; font-weight: 700;
}
.process-step h4 { font-size: 1rem; margin-bottom: 6px; color: var(--color-primary); }
.process-step p { font-size: 0.85rem; color: var(--color-text-secondary); }

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-light);
}
.empty-state .icon { font-size: 3rem; margin-bottom: 12px; }

/* 工具类 */
.text-center { text-align: center; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.hidden { display: none !important; }
.loading { text-align: center; padding: 40px; color: var(--color-text-light); }

/* ============ 视频介绍卡片 ============ */
.video-card {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;          /* 16:9 比例 */
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(145deg, #0f2a44 0%, #1a3a5c 50%, #2d557f 100%);
  box-shadow: 0 20px 50px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.12) inset;
}
.video-card iframe,
.video-card video {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: none;
  border-radius: 16px;
}
.video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  cursor: pointer;
  transition: background 0.3s;
}
.video-placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 45%, rgba(201,162,39,0.18) 0%, transparent 60%);
}
.video-placeholder:hover { background: rgba(255,255,255,0.04); }
.video-play-btn {
  position: relative;
  z-index: 1;
  width: 72px; height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #e6c14a);
  color: #fff;
  font-size: 1.8rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(201,162,39,0.5);
  margin-bottom: 16px;
  animation: videoPulse 2s ease-in-out infinite;
  text-indent: 4px;
}
.video-label {
  position: relative; z-index: 1;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.video-sublabel {
  position: relative; z-index: 1;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
}
.video-platform-tag {
  position: relative; z-index: 1;
  display: inline-block;
  margin-top: 12px;
  padding: 3px 12px;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 12px;
  letter-spacing: 0.5px;
}
@keyframes videoPulse {
  0%, 100% { transform: scale(1); box-shadow: 0 8px 24px rgba(201,162,39,0.5); }
  50% { transform: scale(1.08); box-shadow: 0 12px 32px rgba(201,162,39,0.7); }
}

/* ============================================
   今日留学速报 - 页面样式
   ============================================ */

/* --- 页头徽章 --- */
.brief-date-badge {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 5px 16px; margin-bottom: 16px;
  font-size: 0.78rem; letter-spacing: 1px;
  color: rgba(255,255,255,0.92);
  background: rgba(201,162,39,0.22);
  border: 1px solid rgba(201,162,39,0.55);
  border-radius: 20px;
  position: relative; z-index: 1;
}
.brief-live-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--color-cta);
  box-shadow: 0 0 0 0 rgba(232,118,45,0.7);
  animation: briefLivePulse 1.8s infinite;
}
@keyframes briefLivePulse {
  0%   { box-shadow: 0 0 0 0 rgba(232,118,45,0.7); }
  70%  { box-shadow: 0 0 0 8px rgba(232,118,45,0); }
  100% { box-shadow: 0 0 0 0 rgba(232,118,45,0); }
}

.brief-section-head { text-align: center; margin-bottom: 32px; }

/* --- 今日重点提醒卡片 --- */
.brief-highlight-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  border-left: 5px solid var(--color-accent);
  padding: 28px 30px;
  margin-bottom: 22px;
  box-shadow: var(--shadow-md);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  animation: briefFadeUp 0.5s ease both;
}
.brief-highlight-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
@keyframes briefFadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.brief-highlight-head {
  display: flex; align-items: flex-start; gap: 14px;
  margin-bottom: 18px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--color-border);
}
.brief-fire { font-size: 1.6rem; line-height: 1.2; flex-shrink: 0; }
.brief-highlight-title-wrap { flex: 1; }
.brief-highlight-title-wrap h3 {
  font-size: 1.22rem; color: var(--color-primary);
  margin-bottom: 8px; line-height: 1.5;
}
.brief-urgency {
  display: inline-block;
  padding: 3px 12px;
  font-size: 0.74rem;
  color: var(--color-cta-dark);
  background: rgba(232,118,45,0.1);
  border: 1px solid rgba(232,118,45,0.3);
  border-radius: 12px;
}

/* --- 为什么重要 --- */
.brief-why {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 18px;
}
.brief-why-label,
.brief-actions-label {
  display: inline-block;
  font-size: 0.74rem; font-weight: 600;
  letter-spacing: 1px;
  color: #fff;
  background: var(--color-primary);
  padding: 2px 10px;
  border-radius: 4px;
  margin-bottom: 10px;
}
.brief-actions-label { background: var(--color-cta); }
.brief-why p {
  color: var(--color-text);
  line-height: 1.85;
  font-size: 0.95rem;
}

/* 「」高亮 */
.brief-key {
  color: var(--color-cta-dark);
  font-weight: 600;
}

/* --- 建议行动列表 --- */
.brief-actions ol {
  margin: 0;
  padding-left: 20px;
  list-style: decimal;
}
.brief-actions li {
  color: var(--color-text);
  line-height: 1.9;
  font-size: 0.93rem;
  margin-bottom: 6px;
  padding-left: 4px;
}
.brief-actions li::marker { color: var(--color-cta); font-weight: 600; }

/* --- 国家筛选 --- */
.brief-filter-bar {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: 10px; margin-bottom: 30px;
}
.brief-filter-btn {
  padding: 7px 18px;
  font-size: 0.88rem;
  font-family: inherit;
  color: var(--color-text-secondary);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.brief-filter-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary-light);
}
.brief-filter-btn.active {
  color: #fff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

/* --- 新闻卡片网格 --- */
.brief-news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.brief-news-card {
  padding: 24px 26px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.brief-news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.brief-news-head {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 12px; flex-wrap: wrap;
}
.brief-country-tag {
  padding: 3px 11px;
  font-size: 0.74rem; font-weight: 600;
  color: #fff;
  background: var(--color-primary);
  border-radius: 4px;
}
.brief-news-tag {
  padding: 3px 11px;
  font-size: 0.74rem;
  color: var(--color-accent);
  background: rgba(201,162,39,0.12);
  border: 1px solid rgba(201,162,39,0.32);
  border-radius: 4px;
}
.brief-news-no {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--color-text-light);
  font-weight: 600;
}
.brief-news-title {
  font-size: 1.05rem;
  color: var(--color-primary);
  margin-bottom: 12px;
  line-height: 1.55;
}
.brief-news-points {
  list-style: none;
  padding: 0; margin: 0;
}
.brief-news-points li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 7px;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
}
.brief-news-points li::before {
  content: '';
  position: absolute; left: 0; top: 10px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* --- 免责声明 --- */
.brief-disclaimer {
  background: #fff;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-warning);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  font-size: 0.84rem;
  line-height: 1.85;
  color: var(--color-text-secondary);
  white-space: pre-line;
}
.brief-disclaimer h4 {
  color: var(--color-primary);
  font-size: 0.95rem;
  margin-bottom: 10px;
}
.brief-sources {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--color-border);
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* ============================================
   信息可信度分级 - 徽章与来源标注
   ============================================ */

/* 来源行 */
.brief-source {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--color-border);
}
.brief-source-text {
  flex: 1;
  min-width: 200px;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--color-text-light);
}

/* 可信度徽章 */
.brief-cred-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  padding: 3px 10px;
  font-size: 0.73rem;
  font-weight: 600;
  white-space: nowrap;
  border-radius: 4px;
  cursor: help;
}
.brief-cred-official {
  color: #276749;
  background: rgba(56,161,105,0.12);
  border: 1px solid rgba(56,161,105,0.35);
}
.brief-cred-authoritative {
  color: #975a16;
  background: rgba(214,158,46,0.13);
  border: 1px solid rgba(214,158,46,0.38);
}
.brief-cred-industry {
  color: #9c4221;
  background: rgba(221,107,32,0.11);
  border: 1px solid rgba(221,107,32,0.35);
}

/* 分级图例 */
.brief-legend {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin-bottom: 8px;
  box-shadow: var(--shadow-sm);
}
.brief-legend-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}
.brief-legend-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
}
.brief-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.brief-legend-desc {
  font-size: 0.78rem;
  color: var(--color-text-light);
}

/* ============================================
   首页 - 今日速报速览模块
   ============================================ */
.brief-teaser {
  background: linear-gradient(135deg, #fff 0%, #fbfcfd 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 34px;
  box-shadow: var(--shadow-md);
}
.brief-teaser-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}
.brief-teaser-title {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.18rem;
  color: var(--color-primary);
}
.brief-teaser-live {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 12px;
  font-size: 0.72rem;
  color: var(--color-cta-dark);
  background: rgba(232,118,45,0.1);
  border: 1px solid rgba(232,118,45,0.28);
  border-radius: 12px;
}
.brief-teaser-date {
  font-size: 0.82rem;
  color: var(--color-text-light);
}
.brief-teaser-list { list-style: none; padding: 0; margin: 0 0 22px; }
.brief-teaser-list li {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--color-border);
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-text);
}
.brief-teaser-list li:last-child { border-bottom: none; }
.brief-teaser-list .brief-teaser-icon {
  flex-shrink: 0;
  font-size: 0.95rem;
}
.brief-teaser-empty {
  padding: 20px 0;
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.9rem;
}