/* 松果词典门户页：零 JS 纯静态，蓝色主色与子站点一致 */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --indigo: #4f46e5;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg-soft: #f8fafc;
  --green: #059669;
  --amber: #d97706;
  --purple: #7c3aed;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.shell { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
a { text-decoration: none; color: inherit; }

/* ===== 顶栏 ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-size: 20px; font-weight: 700; color: var(--primary); }
.brand-mark {
  width: 30px; height: 30px; border-radius: 8px;
  background: var(--primary); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 800;
}
.header-nav { display: flex; gap: 22px; font-size: 14px; color: var(--muted); }
.header-nav a:hover, .header-link:hover { color: var(--primary); }
.header-link { cursor: pointer; user-select: none; }

/* ===== 二维码弹层（checkbox :checked 控制） ===== */
.qr-toggle { display: none; }
.qr-modal {
  position: fixed; inset: 0;
  z-index: 100;
  display: none;
  align-items: center; justify-content: center;
  padding: 20px;
}
#qr-miniprogram:checked ~ #modal-miniprogram,
#qr-wechat:checked ~ #modal-wechat { display: flex; }
.qr-backdrop { position: absolute; inset: 0; background: rgba(15, 23, 42, .45); }
.qr-panel {
  position: relative;
  background: #fff;
  border-radius: 16px;
  padding: 28px 24px 22px;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  box-shadow: 0 24px 60px rgba(15, 23, 42, .25);
  max-width: 340px;
}
.qr-panel > img, .qr-image img {
  width: 240px; height: 240px;
  border-radius: 8px;
  display: block;
}
.qr-close {
  position: absolute; top: 6px; right: 14px;
  font-size: 18px; color: #94a3b8;
  cursor: pointer;
  line-height: 1;
  padding: 4px;
}
.qr-close:hover { color: var(--text); }
.qr-title { font-size: 14px; font-weight: 600; color: #334155; text-align: center; }
.qr-loading {
  width: 240px; height: 240px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-soft);
  border-radius: 8px;
  color: #94a3b8; font-size: 13px;
}

/* ===== 首屏与入口卡片 ===== */
.hero { padding: 64px 0 40px; background: linear-gradient(180deg, #f0f6ff 0%, #fff 90%); text-align: center; }
.hero h1 { font-size: clamp(26px, 4vw, 38px); font-weight: 800; letter-spacing: .01em; }

/* 价值胶囊标签 */
.value-pills {
  margin-top: 22px;
  display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;
}
.pill {
  font-size: 14px; font-weight: 600;
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid transparent;
}
.pill-blue { color: var(--primary); background: #eff6ff; border-color: #bfdbfe; }
.pill-teal { color: #0d9488; background: #f0fdfa; border-color: #99f6e4; }
.pill-indigo { color: var(--indigo); background: #eef2ff; border-color: #c7d2fe; }
.pill-amber { color: var(--amber); background: #fffbeb; border-color: #fde68a; }
.pill-purple { color: var(--purple); background: #f5f3ff; border-color: #ddd6fe; }
.pill-green { color: var(--green); background: #ecfdf5; border-color: #a7f3d0; }

.hero-sub { margin-top: 18px; color: var(--muted); font-size: 16px; }

.entry-grid {
  margin-top: 36px;
  display: grid; gap: 16px;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 900px) { .entry-grid { grid-template-columns: repeat(4, 1fr); } }

.entry-card {
  position: relative;
  display: flex; flex-direction: column; align-items: flex-start; gap: 12px;
  padding: 20px 18px 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  text-align: left;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.entry-body { min-width: 0; }
.entry-name { font-size: 17px; font-weight: 700; }
.entry-desc { font-size: 13px; color: var(--muted); margin-top: 2px; }
.entry-badge {
  margin-top: auto;
  font-size: 12px; font-weight: 600;
  padding: 4px 10px; border-radius: 999px;
  align-self: flex-start;
}

/* 右侧箭头：提示可点击进入 */
.entry-arrow {
  position: absolute;
  right: 16px; top: 50%;
  transform: translateY(-50%);
  width: 30px; height: 30px;
  border-radius: 999px;
  display: flex; align-items: center; justify-content: center;
  background: #fff;
  border: 1px solid var(--line);
  color: #94a3b8;
  transition: transform .15s ease, color .15s ease, border-color .15s ease;
}
.entry-arrow svg { width: 15px; height: 15px; }
.entry-gaokao .entry-arrow { color: var(--primary); border-color: #bfdbfe; }
.entry-kaoyan .entry-arrow { color: var(--indigo); border-color: #c7d2fe; }
.entry-gaokao:hover .entry-arrow { border-color: var(--primary); transform: translateY(-50%) translateX(3px); }
.entry-kaoyan:hover .entry-arrow { border-color: var(--indigo); transform: translateY(-50%) translateX(3px); }
.entry-cet4 .entry-arrow, .entry-cet6 .entry-arrow { opacity: .55; }

/* 卡片插画：浅色圆底 + 主题色线条 SVG */
.entry-art {
  width: 56px; height: 56px;
  border-radius: 16px;
  display: inline-flex; align-items: center; justify-content: center;
}
.entry-art svg { width: 32px; height: 32px; }

/* 四卡配色：浅色底 + 配套标题/徽章色 */
.entry-gaokao { background: #eff6ff; border-color: #bfdbfe; }
.entry-gaokao:hover { transform: translateY(-3px); border-color: var(--primary); box-shadow: 0 10px 24px rgba(37, 99, 235, .14); }
.entry-gaokao .entry-art { background: #dbeafe; color: var(--primary); }
.entry-gaokao .entry-name { color: var(--primary-dark); }
.entry-gaokao .entry-badge { color: var(--primary); background: #fff; border: 1px solid #93c5fd; }

.entry-cet4 { background: #f0fdfa; border-color: #99f6e4; }
.entry-cet4 .entry-art { background: #ccfbf1; color: #0d9488; }
.entry-cet4 .entry-name { color: #0f766e; }
.entry-cet4 .entry-desc, .entry-cet6 .entry-desc { color: #64748b; }
.entry-cet4 .entry-badge { color: #0d9488; background: #fff; border: 1px solid #5eead4; }

.entry-cet6 { background: #fffbeb; border-color: #fde68a; }
.entry-cet6 .entry-art { background: #fef3c7; color: var(--amber); }
.entry-cet6 .entry-name { color: #b45309; }
.entry-cet6 .entry-badge { color: var(--amber); background: #fff; border: 1px solid #fcd34d; }

.entry-kaoyan { background: #eef2ff; border-color: #c7d2fe; }
.entry-kaoyan:hover { transform: translateY(-3px); border-color: var(--indigo); box-shadow: 0 10px 24px rgba(79, 70, 229, .14); }
.entry-kaoyan .entry-art { background: #e0e7ff; color: var(--indigo); }
.entry-kaoyan .entry-name { color: #3730a3; }
.entry-kaoyan .entry-badge { color: var(--indigo); background: #fff; border: 1px solid #a5b4fc; }

.hero-note { margin-top: 26px; font-size: 13px; color: #94a3b8; }

/* html 锚点定位补偿吸顶栏高度 */
.feature { scroll-margin-top: 72px; }

/* ===== 交替特性板块 ===== */
.feature { padding: 56px 0; }
.feature-inner {
  display: grid; gap: 40px; align-items: center;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) { .feature-inner { grid-template-columns: 1fr 1fr; gap: 64px; } }
/* 交替板块（feature-alt）：图在左、文在右，与普通板块（文左图右）依次交错 */
.feature-alt .feature-text { order: 2; }
.feature-alt .feature-visual { order: 1; }

/* 各板块主题色浅底：水平渐变且相邻板块方向交替——深色端压在样机卡一侧，向文字侧渐淡 */
#sense { background: linear-gradient(90deg, #f7faff 0%, #e7f1ff 100%); }
#export { background: linear-gradient(90deg, #e5f9f4 0%, #f5fefb 100%); }
#freq { background: linear-gradient(90deg, #f6f8ff 0%, #e6ebff 100%); }
#sentences { background: linear-gradient(90deg, #fff4d6 0%, #fffef7 100%); }
#ai { background: linear-gradient(90deg, #faf8ff 0%, #efe9ff 100%); }
#practice { background: linear-gradient(90deg, #e4f8ec 0%, #f5fef8 100%); }

.feature h2 { font-size: clamp(22px, 3vw, 30px); font-weight: 800; }
.feature-lead { margin-top: 12px; color: var(--muted); font-size: 15px; }

/* 六个板块标题各用主题色，与首屏胶囊/卡片配色体系呼应 */
#sense h2 { color: var(--primary); }
#export h2 { color: #0d9488; }
#freq h2 { color: var(--indigo); }
#sentences h2 { color: #b45309; }
#ai h2 { color: var(--purple); }
#practice h2 { color: var(--green); }

.check-list { margin-top: 18px; list-style: none; display: grid; gap: 10px; }
.check-list li {
  position: relative; padding-left: 28px;
  font-size: 15px; color: #334155;
}
.check-list li::before {
  content: "✓";
  position: absolute; left: 0; top: 1px;
  width: 20px; height: 20px; border-radius: 6px;
  background: #ecfdf5; color: var(--green);
  font-size: 13px; font-weight: 800;
  display: inline-flex; align-items: center; justify-content: center;
}

/* 对号颜色随板块主题色（与标题/背景配套） */
#sense .check-list li::before { background: #e3eeff; color: var(--primary); }
#export .check-list li::before { background: #d9f7f0; color: #0d9488; }
#freq .check-list li::before { background: #e3e9ff; color: var(--indigo); }
#sentences .check-list li::before { background: #fdeeca; color: #b45309; }
#ai .check-list li::before { background: #ece5ff; color: var(--purple); }
#practice .check-list li::before { background: #d9f5e5; color: var(--green); }

.feature-actions { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 44px; padding: 0 22px; border-radius: 10px;
  font-size: 15px; font-weight: 600;
  transition: transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 8px 18px rgba(37, 99, 235, .25); }
.btn-ghost { background: #fff; color: var(--text); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

/* ===== 产品小样机（纯 CSS，参考竞品：白主卡+柔和大阴影+悬浮数据徽章） ===== */
.mock-card {
  position: relative;
  background: #fff;
  border: 1px solid rgba(226, 232, 240, .9);
  border-radius: 14px;
  box-shadow: 0 24px 60px rgba(15, 23, 42, .14);
  max-width: 460px;
  margin: 0 auto;
}
.mock-head {
  display: flex; align-items: center; gap: 10px;
  background: linear-gradient(90deg, #eff6ff, #eef2ff);
  padding: 12px 18px;
  font-size: 13px; font-weight: 700; color: var(--primary);
  border-bottom: 1px solid var(--line);
  border-radius: 14px 14px 0 0;
}
.mock-dots { display: inline-flex; gap: 5px; flex-shrink: 0; }
.mock-dots i {
  width: 9px; height: 9px; border-radius: 999px;
  background: rgba(37, 99, 235, .18);
}
.mock-dots i:first-child { background: rgba(239, 68, 68, .45); }
.mock-dots i:nth-child(2) { background: rgba(245, 158, 11, .5); }
.mock-dots i:last-child { background: rgba(16, 185, 129, .45); }

/* 悬浮数据徽章：叠在样机卡左下角 */
.mock-float {
  position: absolute;
  left: -16px; bottom: -20px;
  display: flex; align-items: center; gap: 10px;
  background: #fff;
  border: 1px solid rgba(226, 232, 240, .9);
  border-radius: 12px;
  padding: 9px 16px 9px 10px;
  box-shadow: 0 14px 34px rgba(15, 23, 42, .18);
  white-space: nowrap;
}
.mf-dot {
  width: 34px; height: 34px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 800; color: #fff;
  flex-shrink: 0;
}
.mf-blue { background: var(--primary); }
.mf-teal { background: #0d9488; }
.mf-indigo { background: var(--indigo); }
.mf-amber { background: var(--amber); }
.mf-purple { background: var(--purple); }
.mf-green { background: var(--green); }
.mf-text { font-size: 12px; font-weight: 700; color: var(--text); line-height: 1.35; }
.mf-text b { display: block; font-weight: 500; font-size: 11px; color: var(--muted); }

@media (max-width: 600px) {
  .mock-float { left: -6px; padding: 8px 12px 8px 8px; }
  .mf-text b { display: none; }
}
.mock-word { padding: 16px 18px 18px; }
.mock-word-head { font-size: 22px; font-weight: 800; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.mock-tag {
  font-size: 12px; font-weight: 600; color: var(--primary);
  background: #eff6ff; border: 1px solid #bfdbfe;
  padding: 3px 9px; border-radius: 999px; white-space: nowrap;
}
.mock-line { margin-top: 8px; font-size: 14px; color: #334155; }
.mock-line b { color: var(--text); }
.mock-chips { margin-top: 14px; display: flex; gap: 8px; flex-wrap: wrap; }
.chip { font-size: 12px; padding: 4px 10px; border-radius: 999px; font-weight: 600; }
.chip-blue { color: var(--primary); background: #eff6ff; }
.chip-indigo { color: var(--indigo); background: #eef2ff; }
.chip-green { color: var(--green); background: #ecfdf5; }
.chip-amber { color: var(--amber); background: #fffbeb; }
.chip-purple { color: var(--purple); background: #f5f3ff; }
.mock-foot {
  padding: 12px 18px;
  border-top: 1px dashed var(--line);
  font-size: 12px; color: #94a3b8;
}

/* 词义分布样机 */
.mock-sense { margin-top: 14px; display: grid; gap: 10px; }
.sense-row {
  display: grid;
  grid-template-columns: minmax(96px, auto) 1fr auto;
  gap: 10px;
  align-items: center;
  font-size: 13px;
  color: #334155;
}
.sense-pos { font-weight: 600; white-space: nowrap; }
.sense-bar-wrap {
  height: 14px;
  background: #f1f5f9;
  border-radius: 999px;
  overflow: hidden;
}
.sense-bar {
  display: block;
  height: 100%;
  width: var(--w, 40%);
  background: linear-gradient(90deg, #60a5fa, var(--primary));
  border-radius: 999px;
}
.sense-bar-indigo { background: linear-gradient(90deg, #818cf8, var(--indigo)); }
.sense-bar-slate { background: linear-gradient(90deg, #94a3b8, #64748b); }
.sense-num { font-size: 12px; color: var(--muted); white-space: nowrap; }

/* 导出词表样机 */
.mock-table { padding: 10px 18px 4px; }
.trow {
  display: grid;
  grid-template-columns: 28px 1.1fr 1.6fr auto;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  border-bottom: 1px dashed var(--line);
  font-size: 13px;
  color: #334155;
}
.trow:last-child { border-bottom: none; }
.trow-head {
  font-size: 11px;
  font-weight: 700;
  color: #94a3b8;
  border-bottom: 1px solid var(--line);
}
.trow b { color: var(--text); }
.t-num { text-align: right; font-weight: 700; color: var(--primary); font-variant-numeric: tabular-nums; }
.trow-head .t-num { color: #94a3b8; font-weight: 700; }

/* 词频柱状图样机 */
.mock-chart { margin-top: 16px; }
.mock-chart-title { font-size: 13px; font-weight: 700; color: var(--text); }
.mock-bars {
  margin-top: 10px;
  display: flex; align-items: flex-end; gap: 10px;
  height: 110px;
  padding: 0 4px;
  border-bottom: 1px solid var(--line);
}
.mock-bars .bar {
  position: relative;
  flex: 1;
  height: var(--h, 40%);
  background: linear-gradient(180deg, #60a5fa, var(--primary));
  border-radius: 4px 4px 0 0;
}
.mock-bars .bar-hl { background: linear-gradient(180deg, #818cf8, var(--indigo)); }
.mock-bars .bar i {
  position: absolute; left: 50%; transform: translateX(-50%);
  bottom: -22px;
  font-style: normal; font-size: 11px; color: #94a3b8; white-space: nowrap;
}
.mock-bars { margin-bottom: 26px; }

/* 真题例句样机 */
.mock-sentence { padding: 14px 18px 16px; border-bottom: 1px dashed var(--line); }
.mock-sentence:last-of-type { border-bottom: none; }
.mock-en { font-size: 14px; line-height: 1.65; color: var(--text); }
.mock-en mark {
  background: #fef08a;
  color: var(--text);
  padding: 0 4px;
  border-radius: 4px;
  font-weight: 700;
}
.mock-zh { margin-top: 6px; font-size: 13px; color: var(--muted); }

/* AI 解析样机 */
.mock-ai { padding: 14px 18px 16px; display: grid; gap: 12px; }
.mock-ai-row { display: flex; gap: 10px; align-items: flex-start; font-size: 13px; line-height: 1.6; color: #334155; }
.mock-ai-label {
  flex-shrink: 0;
  font-size: 12px; font-weight: 700;
  padding: 2px 9px; border-radius: 6px;
  margin-top: 1px;
}
.mock-ai-blue { color: var(--primary); background: #eff6ff; }
.mock-ai-amber { color: var(--amber); background: #fffbeb; }
.mock-ai-green { color: var(--green); background: #ecfdf5; }
.mock-ai-purple { color: var(--purple); background: #f5f3ff; }

/* 真题练习样机 */
.mock-quiz { padding: 14px 18px 4px; }
.mock-q { font-size: 14px; font-weight: 600; line-height: 1.6; color: var(--text); }
.mock-opt {
  margin-top: 8px;
  font-size: 13px; color: #475569;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.opt-wrong { border-color: #fecaca; background: #fef2f2; }
.opt-right { border-color: #a7f3d0; background: #ecfdf5; }
.opt-mark { font-size: 11px; font-weight: 700; white-space: nowrap; }
.opt-mark-red { color: #dc2626; }
.opt-mark-green { color: var(--green); }
.mock-quiz-foot { padding: 12px 18px 16px; margin-top: 0; }

/* ===== 页脚 ===== */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0 36px; text-align: center; font-size: 13px; color: var(--muted); }
.site-footer a { color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }
.site-footer a:hover { color: var(--primary); }

@media (max-width: 600px) {
  .hero { padding: 44px 0 32px; }
  .feature { padding: 44px 0; }
  .header-nav { gap: 16px; }
}