/* ============================================
   冷门高报引擎 - 设计系统 (1:1复刻 theyuanxi.cn)
   ============================================ */

/* 性能优化：减少重绘 */
* { -webkit-tap-highlight-color: transparent; }

:root {
  --color-bg: #fdfcf8;
  --color-bg-secondary: #f5f2ec;
  --color-bg-tertiary: #ede9e0;
  --color-surface: #fff;
  --color-border-light: #e8e4d9;
  --color-separator: #ede9e0;
  --color-text-primary: #1a2744;
  --color-text-secondary: #6b7280;
  --color-text-tertiary: #9ca3af;
  --color-accent: #c9922a;
  --color-accent-hover: #b8811e;
  --color-accent-light: rgba(201, 146, 42, 0.1);
  --color-navy: #1a2744;
  --color-navy-hover: #243560;
  --color-success: #059669;
  --color-warning: #d97706;
  --color-danger: #dc2626;
  --font: -apple-system, "SF Pro Text", "PingFang SC", "Helvetica Neue", sans-serif;
  --font-display: -apple-system, "SF Pro Display", "PingFang SC", "Helvetica Neue", sans-serif;
  --font-serif: "Songti SC", "STSong", "SimSun", "NSimSun", "Source Han Serif SC", serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-pill: 980px;
  --shadow-sm: 0 1px 4px rgba(26, 39, 68, 0.06);
  --shadow-md: 0 4px 16px rgba(26, 39, 68, 0.08);
  --shadow-lg: 0 8px 32px rgba(26, 39, 68, 0.1);
  --gradient-prob: linear-gradient(90deg, #1a2744 0%, #c9922a 100%);

  /* ===== W33: 字号 Token（补全审计缺口） ===== */
  --font-size-xs: 10px;    /* 徽章、标签 */
  --font-size-sm: 12px;    /* 副文本、提示 */
  --font-size-base: 14px;  /* 正文 */
  --font-size-lg: 16px;    /* 卡片标题 */
  --font-size-xl: 18px;    /* 区块标题 */
  --font-size-2xl: 20px;   /* 页面副标题 */
  --font-size-3xl: 24px;   /* 页面标题 */
  --font-size-4xl: 28px;   /* Hero 标题 */

  /* ===== W33: 间距 Token（补全审计缺口） ===== */
  --space-1: 4px;   /* 紧凑元素内部 */
  --space-2: 8px;   /* 按钮内图标间距 */
  --space-3: 12px;  /* 列表项间距 */
  --space-4: 16px;  /* 卡片内边距 */
  --space-5: 20px;  /* 容器边距 */
  --space-6: 24px;  /* 区块间距 */
  --space-7: 32px;  /* 大区块间距 */
  --space-8: 40px;  /* 区块外边距 */

  /* ===== W33: 徽章/语义色 Token（补全审计缺口） ===== */
  --color-badge-985-text: #991b1b;
  --color-badge-985-bg: #fef2f2;
  --color-badge-985-border: #fca5a5;
  --color-badge-211-text: #92400e;
  --color-badge-211-bg: #fffbeb;
  --color-badge-211-border: #fcd34d;
  --color-badge-syl-text: #1e40af;
  --color-badge-syl-bg: #eff6ff;
  --color-badge-syl-border: #bfdbfe;
  --color-badge-chong-text: #dc2626;
  --color-badge-chong-bg: #fef2f2;
  --color-badge-chong-border: #fca5a5;
  --color-badge-wen-text: #d97706;
  --color-badge-wen-bg: #fffbeb;
  --color-badge-wen-border: #fcd34d;
  --color-badge-bao-text: #059669;
  --color-badge-bao-bg: #ecfdf5;
  --color-badge-bao-border: #a7f3d0;
  --color-grade-full-bg: #e7f6ec;
  --color-grade-full-text: #1a7f4b;
  --color-grade-limited-bg: #fdf3e0;
  --color-grade-limited-text: #a16207;
  --color-grade-sparse-bg: #eef0f3;
  --color-grade-sparse-text: #5f6368;
  --color-wechat: #07C160;
  --color-info: #2563eb;
  --color-navy-dark: #0f1b3d;

  /* ===== W34: F 表落地新增 Token（登记表见 backend_split/token_registry.md，回写 rules/01-设计令牌.md） ===== */
  --color-overlay: rgba(0, 0, 0, 0.42);            /* 模态遮罩黑（弹层蒙层） */
  --color-toast-dark: rgba(0, 0, 0, 0.78);         /* 深色 toast 底（居中黑提示） */
  --color-warning-light: rgba(217, 119, 6, 0.08);  /* warning 浅底提示条 */
  --color-info-light: rgba(96, 165, 250, 0.08);    /* info 浅底提示条 */
  --color-star: #ffb800;                           /* 评分星金（亮金，区别于 accent 暗金） */
  --color-cold-high-bg: #ecfeff;                   /* 冷门度 cyan 档浅底 */
  --color-cold-high-text: #164e63;                 /* 冷门度 cyan 档文字 */
  --color-accent-border: rgba(201, 146, 42, 0.32); /* accent 浅边框 */
  --color-navy-grad-end: #2d3a6b;                  /* 深色卡渐变终点（navy 亮向延伸） */
  --color-text-faint: rgba(26, 39, 68, 0.28);      /* 比 tertiary 更浅的层级文字 */
  --color-border: #d5cfc0;                         /* 标准控件边框（比 border-light 深一档；主理人裁决：index.html pref 控件 3 处既有引用补定义） */
}

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

html {
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

/* ===== 导航栏 ===== */
.apple-nav {
  z-index: 100;
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border-light);
  background: rgba(253, 252, 248, 0.92);
  position: sticky;
  top: 0;
}

.nav-brand-sub {
  font-size: 11px;
  color: var(--color-text-tertiary);
  letter-spacing: 0.3px;
  cursor: pointer;
}

/* ===== 按钮 ===== */
.btn-primary {
  background: var(--color-navy);
  color: #fff;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  white-space: nowrap;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  border: none;
  justify-content: center;
  align-items: center;
  gap: 6px;
  padding: 13px 24px;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
  display: inline-flex;
}
.btn-primary:hover:not(:disabled) { background: var(--color-navy-hover); }
.btn-primary:active:not(:disabled) { transform: scale(0.97); }
.btn-primary:disabled { opacity: 0.35; cursor: not-allowed; }

.btn-secondary {
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  white-space: nowrap;
  border: none;
  justify-content: center;
  align-items: center;
  gap: 6px;
  padding: 13px 24px;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
  display: inline-flex;
}
.btn-secondary:hover { background: var(--color-bg-tertiary); }
.btn-secondary:active { transform: scale(0.97); }

.btn-ghost {
  color: var(--color-accent);
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  background: transparent;
  border: none;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  text-decoration: none;
  transition: background 0.15s;
  display: inline-flex;
}
.btn-ghost:hover { background: var(--color-accent-light); }

/* ===== 输入框 ===== */
.apple-input {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  width: 100%;
  font-family: var(--font);
  color: var(--color-text-primary);
  border: 1.5px solid transparent;
  outline: none;
  padding: 14px 16px;
  font-size: 17px;
  transition: border-color 0.15s, background 0.15s;
}
.apple-input::placeholder { color: var(--color-text-tertiary); }
.apple-input:focus { border-color: var(--color-accent); background: var(--color-surface); }

.apple-select {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  width: 100%;
  font-family: var(--font);
  color: var(--color-text-primary);
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%236e6e73'/%3E%3C/svg%3E");
  background-position: right 14px center;
  background-repeat: no-repeat;
  border: 1.5px solid transparent;
  outline: none;
  padding: 14px 40px 14px 16px;
  font-size: 16px;
  transition: border-color 0.15s;
}
.apple-select:focus { border-color: var(--color-accent); }

/* ===== 卡片 ===== */
.apple-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
}

.apple-card-elevated {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.apple-divider {
  background: var(--color-border-light);
  border: none;
  height: 1px;
}

/* ===== 标签 ===== */
.badge {
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
  align-items: center;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 600;
  display: inline-flex;
}
.badge-985 { color: var(--color-badge-985-text); background: var(--color-badge-985-bg); border: 1px solid var(--color-badge-985-border); }
.badge-211 { color: var(--color-badge-211-text); background: var(--color-badge-211-bg); border: 1px solid var(--color-badge-211-border); }
.badge-syl { color: var(--color-badge-syl-text); background: var(--color-badge-syl-bg); border: 1px solid var(--color-badge-syl-border); }
.badge-plain { background: var(--color-bg-secondary); color: var(--color-text-secondary); border: 1px solid var(--color-border-light); }
.badge-gem { color: var(--color-badge-211-text); border: 1px solid var(--color-accent); background: var(--color-badge-211-bg); }
.badge-swarm { color: var(--color-cold-high-text); background: var(--color-cold-high-bg); border: 1px solid #a5f3fc; }
.badge-chong { color: var(--color-badge-chong-text); background: var(--color-badge-chong-bg); border: 1px solid var(--color-badge-chong-border); }
.badge-wen { color: var(--color-badge-wen-text); background: var(--color-badge-wen-bg); border: 1px solid var(--color-badge-wen-border); }
.badge-bao { color: var(--color-badge-bao-text); background: var(--color-badge-bao-bg); border: 1px solid var(--color-badge-bao-border); }

/* ===== Hero区域 ===== */
.hero-section {
  flex-direction: column;
  justify-content: center;
  align-items: center;
  /* W19 用户走查: 不再占满整屏 —— 家长第一眼就能看到查询表单，
     原先 100vh 让输入框沉到第二屏，首屏只有一条表单边 */
  min-height: auto;
  padding: 56px 20px 44px;
  display: flex;
  position: relative;
}

/* ===== 温暖卡片（推荐结果） ===== */
.warm-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 14px;
  transition: box-shadow 0.2s, transform 0.15s;
  position: relative;
}
.warm-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.warm-card-gem { border-left: 3px solid var(--color-accent); }
.warm-card-swarm { border-left: 3px solid #0891b2; }

/* ===== 概率条 ===== */
.prob-bar-track {
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-pill);
  height: 5px;
  overflow: hidden;
}
.prob-bar-fill {
  border-radius: var(--radius-pill);
  background: var(--gradient-prob);
  height: 100%;
  transition: width 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 学校名称（衬线体） ===== */
.school-name-serif {
  font-family: var(--font-serif);
  color: var(--color-navy);
  font-weight: 700;
  text-decoration: none;
  transition: color 0.15s;
}
.school-name-serif:hover { color: var(--color-accent); }

/* ===== 数据单元格 ===== */
.data-cell {
  flex-direction: column;
  gap: 2px;
  display: flex;
}
.data-cell-label {
  color: var(--color-text-tertiary);
  font-size: 11px;
}
.data-cell-value {
  color: var(--color-navy);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  font-weight: 600;
}

/* ===== Tab栏 ===== */
.tab-bar {
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
}
.tab-bar::-webkit-scrollbar { display: none; }
.tab-item {
  color: var(--color-text-secondary);
  cursor: pointer;
  user-select: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s;
}
.tab-item.active {
  color: var(--color-navy);
  border-bottom-color: var(--color-accent);
  font-weight: 600;
}
.tab-item:hover:not(.active) { color: var(--color-navy); }

/* ===== 进度条 ===== */
.apple-progress {
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-pill);
  height: 4px;
  overflow: hidden;
}
.apple-progress-fill {
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  height: 100%;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 骨架屏 ===== */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg-secondary) 25%, var(--color-bg-tertiary) 50%, var(--color-bg-secondary) 75%);
  border-radius: var(--radius-sm);
  background-size: 200% 100%;
  animation: 1.4s infinite shimmer;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===== Spinner ===== */
.spinner {
  border: 2px solid var(--color-separator);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: 0.7s linear infinite spin;
  width: 24px;
  height: 24px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== 容器 ===== */
.container { max-width: 680px; margin: 0 auto; padding: 0 20px; }
.container-wide { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

/* ===== 焦点 ===== */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ===== 案例研究网格 ===== */
.case-study-grid {
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  display: grid;
}

/* ===== 查询卡片 ===== */
.query-card-mobile { padding: 28px 28px 24px; }
.query-grid-2col { grid-template-columns: 1fr 1fr; display: grid; gap: 12px; }

/* ===== 区块 ===== */
.section-pad { padding: 80px 20px; }

/* ===== 评价轮播 ===== */
.testimonial-track {
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-behavior: smooth;
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 4px 20px 12px;
}
.testimonial-track::-webkit-scrollbar { display: none; }
.t-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-separator);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  color: var(--color-text-primary);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
  transition: background 0.15s, transform 0.15s;
}
.t-arrow:hover { background: #fff; transform: translateY(-50%) scale(1.08); }
.t-arrow-left { left: 4px; }
.t-arrow-right { right: 4px; }

/* ===== 浮动反馈按钮 ===== */
.fab-feedback {
  position: fixed;
  bottom: 80px;
  right: 16px;
  z-index: 1000;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-wechat);
  color: #fff;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(7, 193, 96, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  transition: transform 0.15s;
}
.fab-feedback:hover { transform: scale(1.1); }

/* ===== 选科按钮 ===== */
.subject-btn {
  padding: 7px 0;
  border-radius: 8px;
  border: 1.5px solid var(--color-separator);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}
.subject-btn.selected {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-weight: 600;
}

/* ===== 输入模式切换 ===== */
.mode-toggle {
  display: flex;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: 24px;
}
.mode-toggle button {
  flex: 1;
  padding: 9px 12px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font);
  background: transparent;
  color: var(--color-text-secondary);
  transition: all 0.2s;
}
.mode-toggle button.active {
  background: var(--color-surface);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-sm);
}

/* ===== 结果页样式 ===== */
.results-header {
  background: var(--color-bg-secondary);
  padding: 32px 20px 24px;
  border-bottom: 1px solid var(--color-border-light);
}

.results-summary {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.results-summary-item {
  text-align: center;
}
.results-summary-num {
  font-size: 28px;
  font-weight: 700;
  font-family: var(--font-display);
  color: var(--color-navy);
}
.results-summary-label {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

/* ===== 筛选栏 ===== */
.filter-bar {
  display: flex;
  gap: 8px;
  padding: 12px 20px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
  overflow-x: auto;
  scrollbar-width: none;
}
.filter-bar::-webkit-scrollbar { display: none; }
.filter-chip {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-light);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
}
.filter-chip.active {
  background: var(--color-navy);
  color: #fff;
  border-color: var(--color-navy);
}

/* ===== 推荐卡片详情 ===== */
.rec-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  margin-bottom: 12px;
  transition: box-shadow 0.2s, transform 0.15s, border-color 0.2s;
  cursor: pointer;
  animation: fadeInUp 0.4s ease-out;
}
.rec-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-accent);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.rec-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}
.rec-card-school {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-navy);
}
.rec-card-major {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: 4px;
}
.rec-card-prob {
  text-align: right;
}
.rec-card-prob-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-accent);
}
.rec-card-prob-label {
  font-size: 11px;
  color: var(--color-text-tertiary);
}
.rec-card-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.rec-card-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ===== 空状态 ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
}
.empty-state-icon {
  font-size: 48px;
  margin-bottom: 16px;
}
.empty-state-text {
  font-size: 16px;
  color: var(--color-text-secondary);
}

/* ===== 页脚 ===== */
.site-footer {
  border-top: 1px solid var(--color-separator);
  padding: 24px 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.site-footer span, .site-footer a {
  font-size: 13px;
  color: var(--color-text-tertiary);
  text-decoration: none;
}
.site-footer a:hover { color: var(--color-text-secondary); }

/* ===== 移动端底部导航 ===== */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-light);
  padding: 8px 0;
  z-index: 100;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}
.mobile-bottom-nav a {
  flex: 1;
  text-align: center;
  text-decoration: none;
  color: var(--color-text-secondary);
  font-size: 11px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 4px 0;
}
.mobile-bottom-nav a.active { color: var(--color-accent); }
.mobile-bottom-nav .icon { font-size: 20px; }

@media (max-width: 600px) {
  .mobile-bottom-nav { display: flex; }
  body { padding-bottom: 60px; }
}

@media (min-width: 601px) {
  .nav-mobile-only, .show-on-mobile { display: none !important; }
}

@media (max-width: 480px) {
  .nav-brand-sub { display: none !important; }
  .data-strip { gap: 12px; font-size: 12px; }
}

/* ============================================
   V2 视觉升级（2026-08-30 整体迭代）
   原则：只增补不改既有 class 语义，保证其余页面零回归
   ============================================ */

/* ---- 新增 token ---- */
:root {
  --gradient-navy: linear-gradient(135deg, #1a2744 0%, #2b3f73 100%);
  --gradient-accent: linear-gradient(135deg, #d9a441 0%, #b8811e 100%);
  --hl-underline: rgba(201, 146, 42, 0.30);
}

/* ---- 内联 SVG 图标基类（替代 emoji 图标） ---- */
.ic {
  width: 1.15em;
  height: 1.15em;
  flex-shrink: 0;
  vertical-align: -0.18em;
}
.ic-stroke {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.ic-card { width: 30px; height: 30px; color: var(--color-accent); }
.ic-card-navy { width: 30px; height: 30px; color: var(--color-navy); }
.ic-badge { width: 15px; height: 15px; vertical-align: -2px; }
.mbn-ic { width: 22px; height: 22px; display: block; }
.mbn-ic-stroke {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---- Hero 视觉记忆点：网格纹理 + 双色光晕 ---- */
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26, 39, 68, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 39, 68, 0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 85% 62% at 50% 28%, #000 25%, transparent 72%);
  mask-image: radial-gradient(ellipse 85% 62% at 50% 28%, #000 25%, transparent 72%);
  pointer-events: none;
  z-index: 0;
}
.hero-section::after {
  content: '';
  position: absolute;
  top: -120px;
  right: -140px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 146, 42, 0.13) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}
.hero-section > * { position: relative; z-index: 1; }

/* 标题关键词手绘高亮 */
.hl {
  font-style: normal;
  background: linear-gradient(transparent 60%, var(--hl-underline) 60%);
  padding: 0 2px;
}

/* ---- 按钮质感升级 ---- */
.btn-primary {
  background: var(--gradient-navy);
  box-shadow: 0 4px 14px rgba(26, 39, 68, 0.22);
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
}
.btn-primary:hover:not(:disabled) {
  background: var(--gradient-navy);
  transform: translateY(-1px);
  box-shadow: 0 7px 22px rgba(26, 39, 68, 0.30);
}
.btn-primary:active:not(:disabled) { transform: scale(0.97); box-shadow: 0 2px 8px rgba(26, 39, 68, 0.2); }

/* ---- 卡片悬停升级 ---- */
.apple-card-elevated { transition: transform 0.25s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.25s; }
.apple-card-elevated:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.apple-card { transition: box-shadow 0.2s; }
.apple-card:hover { box-shadow: var(--shadow-md); }

/* ---- 滚动渐入动效 ---- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.reveal.is-visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: 0.08s; }
.reveal-d2 { transition-delay: 0.16s; }
.reveal-d3 { transition-delay: 0.24s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---- 区块引导标签 ---- */
.sec-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-accent-light);
  border: 1px solid rgba(201, 146, 42, 0.30);
  border-radius: var(--radius-pill);
  padding: 6px 16px;
  font-size: 12px;
  color: var(--color-accent-hover);
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* ---- 导航当前页标识 ---- */
.btn-ghost.nav-current {
  color: var(--color-navy);
  font-weight: 600;
  background: var(--color-accent-light);
}

/* ---- 页脚升级 ---- */
.site-footer {
  padding: 28px 20px;
  background: var(--color-bg-secondary);
}
.site-footer a { transition: color 0.15s; }
.site-footer a:hover { color: var(--color-accent); }

/* ---- 移动端底栏图标对齐 ---- */
.mobile-bottom-nav a { gap: 3px; }

/* ---- W18 UX: 全局轻提示（替代原生 alert，非阻塞自动消失） ---- */
#gk-toast {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translate(-50%, -12px);
  background: rgba(26, 39, 68, 0.94);
  color: #fff;
  font-size: 14px;
  padding: 11px 22px;
  border-radius: 99px;
  box-shadow: 0 8px 28px rgba(26, 39, 68, 0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 3000;
  max-width: 82vw;
  text-align: center;
}
#gk-toast.gk-toast-show { opacity: 1; transform: translate(-50%, 0); }

/* ---- R34 修复：移动端隐藏桌面导航/桌面版对比表（类曾被引用但从未定义） ---- */
@media (max-width: 600px) {
  .nav-link-mobile-hide, .hide-on-mobile { display: none !important; }
}

/* ---- W7-R4: 对比区 VS 圆形徽章（类曾被引用但无样式） ---- */
.case-study-vs {
  width: 64px;
  height: 64px;
  margin: 0 auto;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-light);
  border: 1.5px solid rgba(201, 146, 42, 0.35);
}
@media (max-width: 600px) { .case-study-vs { width: 56px; height: 56px; } }

/* ---- W10: fab 不得盖住弹窗（原 1000，弹窗 9999 但实测 fab 浮于其上） ---- */
.fab-feedback { z-index: 500; }

/* ---- W14: chips 对标规格（padding 6px 14px / 13px 字号 / flex gap 8 布局）---- */
.pref-chip {
  padding: 6px 14px !important;
  margin: 0 !important;
  border-radius: 980px;
  font-size: 13px;
  border: 1px solid var(--color-separator);
  background: var(--color-bg);
  color: var(--color-text-secondary);
}
div[id$="-chips"] {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ===== V3 P0-L1: 数据量分级徽章（样本量阈值降级机制配套, 2026-08-31）===== */
.grade-badge { display: inline-flex; align-items: center; font-size: 10px; font-weight: 600; padding: 2px 7px; border-radius: 999px; letter-spacing: 0.02em; white-space: nowrap; }
.grade-full { background: var(--color-grade-full-bg); color: var(--color-grade-full-text); }
.grade-limited { background: var(--color-grade-limited-bg); color: var(--color-grade-limited-text); }
.grade-sparse { background: var(--color-grade-sparse-bg); color: var(--color-grade-sparse-text); }

/* ===== N3 官方溯源角标 + 信任横幅（2026-09-29 快赢）===== */
.src-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  white-space: nowrap;
  background: rgba(5, 150, 105, 0.08);
  color: var(--color-success);
  border: 1px solid rgba(5, 150, 105, 0.25);
  cursor: help;
}
.trust-banner {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  background: rgba(5, 150, 105, 0.06);
  border: 1px solid rgba(5, 150, 105, 0.22);
  font-size: 12px;
  line-height: 1.7;
  color: #1a5c3f;
}
.trust-banner .trust-banner-ic { flex: 0 0 auto; margin-top: 2px; display: inline-flex; }
.trust-banner b { font-weight: 700; }

/* ============================================
   移动端响应式优化 (W33 迭代, 2026-09-01)
   原则：只增补不改既有 class 语义
   ============================================ */
@media (max-width: 600px) {
  /* 导航栏：水平滚动不换行 */
  .apple-nav > div {
    flex-wrap: nowrap !important;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .apple-nav > div::-webkit-scrollbar { display: none; }
  .apple-nav .btn-ghost {
    flex-shrink: 0;
    padding: 6px 10px;
    font-size: 12px;
  }

  /* 容器宽度 */
  .container-wide {
    padding-left: 12px !important;
    padding-right: 12px !important;
  }
  .container {
    padding-left: 12px !important;
    padding-right: 12px !important;
  }

  /* 卡片：减小 padding */
  .apple-card, .apple-card-elevated {
    padding: 12px 14px;
  }
  .rec-card {
    padding: 14px 14px;
  }

  /* 结果卡片：纵向布局 */
  .rec-card-header {
    flex-direction: column !important;
    gap: 10px;
  }
  .rec-card-prob {
    text-align: left !important;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .rec-card-prob-num {
    font-size: 20px;
  }
  .rec-card-meta {
    gap: 10px;
    font-size: 12px;
  }

  /* 表单输入：占满宽度 */
  .apple-input, .apple-select {
    width: 100% !important;
    max-width: 100% !important;
    font-size: 15px !important;
  }

  /* 志愿表统计栏：2x2 排列 */
  #stats-bar > div {
    flex: 1 1 calc(50% - 6px) !important;
    min-width: calc(50% - 6px) !important;
  }

  /* 筛选栏：可换行 */
  .filter-bar {
    flex-wrap: wrap;
    gap: 6px;
    padding: 10px 12px;
  }
  .filter-bar .filter-chip,
  .filter-bar select {
    flex-shrink: 0;
  }

  /* 标题字号缩小 */
  h1 { font-size: 20px !important; }
  h2 { font-size: 18px !important; }
  h3 { font-size: 16px !important; }

  /* 分数图表 */
  .score-chart {
    height: 80px;
    gap: 4px;
  }

  /* 志愿表项目 */
  .wish-item {
    flex-wrap: wrap;
    padding: 10px 12px;
  }
  .drag-handle {
    display: none;
  }

  /* 表格水平滚动 */
  table {
    font-size: 12px;
  }

  /* 按钮组 */
  .btn-primary, .btn-secondary {
    font-size: 13px;
    padding: 10px 16px;
  }

  /* 结果摘要 */
  .results-summary {
    gap: 16px;
  }
  .results-summary-num {
    font-size: 22px;
  }

  /* 空状态 */
  .empty-state {
    padding: 40px 12px;
  }

  /* Hero 区域 */
  .hero-section {
    padding: 32px 12px 28px;
  }

  /* 评价轮播 */
  .testimonial-track {
    padding: 4px 12px 12px;
  }

  /* 导出按钮 */
  .export-btn {
    bottom: 72px !important;
    right: 12px !important;
    padding: 10px 16px;
    font-size: 12px;
  }

  /* 回到顶部 */
  #back-top {
    bottom: 140px !important;
    right: 12px !important;
    width: 40px;
    height: 40px;
    font-size: 16px;
  }

  /* 查询表单 */
  .query-grid-2col {
    grid-template-columns: 1fr !important;
    gap: 8px;
  }
  .query-card-mobile {
    padding: 16px 14px;
  }

  /* 学校列表项 */
  .school-list-item {
    padding: 12px 14px;
  }

  /* 对比卡片 */
  .compare-school-card {
    min-width: 140px;
    padding: 12px;
  }

  /* 详情头部 */
  .detail-header {
    padding: 24px 12px !important;
  }

  /* 专业风向标等大页面 */
  .section-pad {
    padding: 40px 12px;
  }
}

@media (max-width: 380px) {
  /* 超窄屏 */
  h1 { font-size: 18px !important; }
  .rec-card-prob-num { font-size: 18px; }
  .btn-primary, .btn-secondary { font-size: 12px; padding: 8px 12px; }
  #stats-bar > div { flex: 1 1 100% !important; min-width: 100% !important; }
}