/* ============================================================
   早教与兴趣班课包单价换算器 · 独立视觉：葡萄紫 + 柠檬金 + 课时格子
   ============================================================ */

.ecc-page {
  --ecc-bg: #f4f2fb;
  --ecc-bg-2: #ece7f9;
  --ecc-card: #ffffff;
  --ecc-soft: #f1eefb;
  --ecc-soft-2: #e3dcf6;
  --ecc-ink: #241a3d;
  --ecc-muted: #6f6685;
  --ecc-line: #e3dcf2;
  --ecc-accent: #5b3fbf;
  --ecc-accent-2: #8b6bea;
  --ecc-gold: #b8800a;
  --ecc-gold-2: #e2b13c;
  --ecc-ok: #14795c;
  --ecc-bad: #b42318;
  --ecc-warn: #a15c07;
  --ecc-shadow: 0 10px 30px rgba(91, 63, 191, .09);

  background: var(--ecc-bg);
  color: var(--ecc-ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.78;
  padding-bottom: 48px;
  transition: background-color .2s ease, color .2s ease;
}

:root[data-theme="dark"] .ecc-page {
  --ecc-bg: #100d1a;
  --ecc-bg-2: #161226;
  --ecc-card: #191429;
  --ecc-soft: #201a33;
  --ecc-soft-2: #2a2142;
  --ecc-ink: #ece7fa;
  --ecc-muted: #a49bbd;
  --ecc-line: #2c2444;
  --ecc-accent: #a78bfa;
  --ecc-accent-2: #c4b0ff;
  --ecc-gold: #e2b13c;
  --ecc-gold-2: #f0c765;
  --ecc-ok: #4ade9f;
  --ecc-bad: #f87171;
  --ecc-warn: #f3b64b;
  --ecc-shadow: 0 10px 30px rgba(0, 0, 0, .4);
}

html[data-theme="dark"] .ecc-page { color-scheme: dark; }

.ecc-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 20px 0;
}

.ecc-crumb { font-size: 13px; color: var(--ecc-muted); margin-bottom: 14px; }
.ecc-crumb a { color: var(--ecc-muted); text-decoration: none; }
.ecc-crumb a:hover { color: var(--ecc-accent); }

/* ---------- Hero ---------- */
.ecc-hero {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 196px;
  gap: 22px;
  align-items: center;
  background:
    radial-gradient(520px 190px at 88% -20%, rgba(226, 177, 60, .22), transparent 72%),
    linear-gradient(135deg, var(--ecc-bg-2), var(--ecc-card) 74%);
  border: 1px solid var(--ecc-line);
  border-radius: 22px;
  padding: 26px 28px;
  box-shadow: var(--ecc-shadow);
  margin-bottom: 16px;
}
.ecc-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--ecc-accent);
  background: rgba(91, 63, 191, .1);
  border-radius: 999px;
  padding: 3px 11px;
  margin-bottom: 9px;
}
.ecc-hero h1 { font-size: 28px; line-height: 1.36; margin: 0 0 10px; letter-spacing: -.01em; }
.ecc-hero p { margin: 0; font-size: 14.5px; color: var(--ecc-muted); max-width: 660px; }
.ecc-hero p b { color: var(--ecc-ink); }
.ecc-hero-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.ecc-hero-meta span {
  font-size: 12px;
  color: var(--ecc-accent);
  background: var(--ecc-soft);
  border: 1px solid var(--ecc-line);
  border-radius: 8px;
  padding: 4px 10px;
}

/* Hero 右侧：三张悬挂价签 */
.ecc-hero-tags { position: relative; height: 150px; }
.ecc-hero-tags i {
  position: absolute;
  width: 74px;
  height: 96px;
  background: var(--ecc-card);
  border: 1px solid var(--ecc-line);
  border-radius: 8px 8px 10px 10px;
  box-shadow: var(--ecc-shadow);
}
.ecc-hero-tags i::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 50%;
  width: 8px; height: 8px;
  margin-left: -4px;
  border-radius: 50%;
  border: 2px solid var(--ecc-soft-2);
  background: var(--ecc-bg);
}
.ecc-hero-tags i::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; top: 30px;
  height: 30px;
  border-radius: 4px;
  background: var(--ecc-soft);
}
.ecc-hero-tags i:nth-child(1) { left: 4px; top: 18px; transform: rotate(-8deg); }
.ecc-hero-tags i:nth-child(2) { left: 62px; top: 34px; transform: rotate(1deg); border-color: var(--ecc-gold-2); }
.ecc-hero-tags i:nth-child(3) { left: 118px; top: 12px; transform: rotate(9deg); }
.ecc-hero-tags i:nth-child(2)::after { background: linear-gradient(135deg, var(--ecc-gold-2), var(--ecc-soft-2)); }

/* ---------- 最优结论条 ---------- */
.ecc-best {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: center;
  background: linear-gradient(135deg, rgba(91, 63, 191, .1), rgba(226, 177, 60, .12));
  border: 1px solid var(--ecc-line);
  border-radius: 16px;
  padding: 16px 22px;
  margin-bottom: 20px;
}
.ecc-best-main { font-size: 14.5px; line-height: 1.7; }
.ecc-best-main b { font-size: 17px; color: var(--ecc-accent); }
.ecc-best-main small { display: block; font-size: 12.5px; color: var(--ecc-muted); margin-top: 3px; }
.ecc-best-side { text-align: right; }
.ecc-best-side b { display: block; font-size: 24px; font-variant-numeric: tabular-nums; color: var(--ecc-ink); letter-spacing: -.01em; }
.ecc-best-side span { font-size: 12px; color: var(--ecc-muted); }

/* ---------- 课包卡片 ---------- */
.ecc-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 18px;
}
.ecc-card {
  background: var(--ecc-card);
  border: 1px solid var(--ecc-line);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--ecc-shadow);
  display: flex;
  flex-direction: column;
}
.ecc-card-head {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 14px;
}
.ecc-card-head em {
  flex: 0 0 auto;
  width: 24px; height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  background: var(--ecc-soft-2);
  color: var(--ecc-accent);
  font-style: normal;
  font-size: 12px;
  font-weight: 700;
}
.ecc-card-head input {
  flex: 1;
  min-width: 0;
  height: 34px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: var(--ecc-soft);
  color: var(--ecc-ink);
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  padding: 0 10px;
  outline: none;
}
.ecc-card-head input:focus { border-color: var(--ecc-accent-2); background: var(--ecc-card); }

.ecc-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 10px; }
.ecc-field { display: flex; flex-direction: column; gap: 4px; }
.ecc-field.full { grid-column: 1 / -1; }
.ecc-field > label { font-size: 11.5px; color: var(--ecc-muted); font-weight: 600; }
.ecc-unit { position: relative; display: flex; align-items: center; }
.ecc-unit input {
  width: 100%;
  height: 37px;
  border: 1px solid var(--ecc-line);
  background: var(--ecc-soft);
  color: var(--ecc-ink);
  border-radius: 8px;
  padding: 0 34px 0 9px;
  font-size: 14px;
  font-family: inherit;
  font-variant-numeric: tabular-nums;
  outline: none;
  -moz-appearance: textfield;
}
.ecc-unit input::-webkit-outer-spin-button,
.ecc-unit input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.ecc-unit input:focus {
  border-color: var(--ecc-accent-2);
  box-shadow: 0 0 0 3px rgba(91, 63, 191, .13);
}
.ecc-unit em {
  position: absolute;
  right: 9px;
  font-style: normal;
  font-size: 11.5px;
  color: var(--ecc-muted);
  pointer-events: none;
}

.ecc-seg {
  display: flex;
  background: var(--ecc-soft);
  border: 1px solid var(--ecc-line);
  border-radius: 8px;
  padding: 2px;
  gap: 2px;
}
.ecc-seg label { flex: 1; position: relative; cursor: pointer; }
.ecc-seg input { position: absolute; opacity: 0; pointer-events: none; }
.ecc-seg span {
  display: block;
  text-align: center;
  font-size: 11.5px;
  padding: 6px 2px;
  border-radius: 6px;
  color: var(--ecc-muted);
  transition: background-color .15s ease, color .15s ease;
}
.ecc-seg input:checked + span {
  background: var(--ecc-card);
  color: var(--ecc-ink);
  font-weight: 700;
  box-shadow: 0 1px 3px rgba(36, 26, 61, .12);
}
.ecc-seg input:focus-visible + span { outline: 2px solid var(--ecc-accent-2); outline-offset: 1px; }

/* 课时格子 */
.ecc-cells {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 3px;
  margin: 15px 0 8px;
}
.ecc-cells i {
  padding-top: 100%;
  border-radius: 2px;
  background: var(--ecc-accent-2);
}
.ecc-cells i.loss {
  background: repeating-linear-gradient(45deg, var(--ecc-soft-2), var(--ecc-soft-2) 2px, var(--ecc-card) 2px, var(--ecc-card) 4px);
  border: 1px solid var(--ecc-line);
}
.ecc-cells-note {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 11.5px;
  color: var(--ecc-muted);
  margin-bottom: 12px;
}
.ecc-cells-note b { color: var(--ecc-ink); font-variant-numeric: tabular-nums; }

.ecc-card-out {
  margin-top: auto;
  border-top: 1px dashed var(--ecc-line);
  padding-top: 12px;
  display: grid;
  gap: 7px;
}
.ecc-row { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; font-size: 12.5px; }
.ecc-row span { color: var(--ecc-muted); }
.ecc-row b { font-variant-numeric: tabular-nums; }
.ecc-row.big b { font-size: 19px; color: var(--ecc-accent); letter-spacing: -.01em; }
.ecc-row b.bad { color: var(--ecc-bad); }
.ecc-row b.ok { color: var(--ecc-ok); }

.ecc-verdict {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.65;
  border-radius: 8px;
  padding: 7px 9px;
  background: var(--ecc-soft);
  color: var(--ecc-muted);
}
.ecc-verdict.win { background: rgba(20, 121, 92, .12); color: var(--ecc-ok); font-weight: 700; }
.ecc-verdict.lose { background: rgba(180, 35, 24, .08); color: var(--ecc-bad); }

.ecc-error {
  margin: 0 0 16px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ecc-warn);
  background: var(--ecc-soft);
  border-left: 3px solid var(--ecc-gold-2);
  border-radius: 0 8px 8px 0;
  padding: 9px 12px;
}
.ecc-error:empty { display: none; }

/* ---------- 通用按钮行 ---------- */
.ecc-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; }
.ecc-btn {
  height: 40px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: var(--ecc-accent);
  color: #fff;
  font-size: 14px;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .15s ease, transform .1s ease;
}
.ecc-btn:hover { opacity: .9; }
.ecc-btn:active { transform: translateY(1px); }
.ecc-btn.ghost { background: transparent; border-color: var(--ecc-line); color: var(--ecc-ink); }
.ecc-btn.link { background: transparent; border-color: transparent; color: var(--ecc-accent); text-decoration: underline; text-underline-offset: 3px; padding: 0 6px; }

/* ---------- 内容块 ---------- */
.ecc-block {
  background: var(--ecc-card);
  border: 1px solid var(--ecc-line);
  border-radius: 16px;
  padding: 22px 24px;
  margin-bottom: 16px;
  box-shadow: var(--ecc-shadow);
}
.ecc-block h2 { font-size: 18px; margin: 0 0 8px; letter-spacing: -.01em; }
.ecc-block > p { font-size: 14px; color: var(--ecc-muted); margin: 0 0 16px; max-width: 920px; }
.ecc-block > p b { color: var(--ecc-ink); }

.ecc-tbl-wrap { overflow-x: auto; margin: 0 -4px; }
.ecc-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.ecc-table th {
  text-align: left;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--ecc-muted);
  background: var(--ecc-soft);
  padding: 9px 10px;
  border-bottom: 1px solid var(--ecc-line);
  white-space: nowrap;
}
.ecc-table th:first-child { border-radius: 8px 0 0 8px; }
.ecc-table th:last-child { border-radius: 0 8px 8px 0; }
.ecc-table td { padding: 10px; border-bottom: 1px solid var(--ecc-line); }
.ecc-table tbody tr:last-child td { border-bottom: none; }
.ecc-table td.num, .ecc-table th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.ecc-table td b { font-variant-numeric: tabular-nums; }
.ecc-table tr.win td { background: rgba(20, 121, 92, .07); }
.ecc-table td.bad { color: var(--ecc-bad); font-weight: 700; }
.ecc-table td.ok { color: var(--ecc-ok); font-weight: 700; }

/* 避坑清单 */
.ecc-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.ecc-list li {
  position: relative;
  background: var(--ecc-soft);
  border: 1px solid var(--ecc-line);
  border-radius: 10px;
  padding: 11px 13px 11px 36px;
  font-size: 13px;
  line-height: 1.7;
}
.ecc-list li::before {
  content: "!";
  position: absolute;
  left: 12px;
  top: 11px;
  width: 16px; height: 16px;
  border-radius: 5px;
  background: rgba(184, 128, 10, .16);
  color: var(--ecc-gold);
  font-size: 11px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.ecc-list li b { color: var(--ecc-ink); }

/* FAQ */
.ecc-faq {
  background: var(--ecc-card);
  border: 1px solid var(--ecc-line);
  border-radius: 16px;
  padding: 22px 24px;
  margin-bottom: 16px;
  box-shadow: var(--ecc-shadow);
}
.ecc-faq h2 { font-size: 18px; margin: 0 0 14px; }
.ecc-faq details { border-top: 1px solid var(--ecc-line); padding: 12px 0; }
.ecc-faq details:first-of-type { border-top: none; padding-top: 0; }
.ecc-faq summary {
  cursor: pointer;
  font-size: 14.5px;
  font-weight: 600;
  list-style: none;
  display: flex;
  gap: 9px;
  align-items: flex-start;
  line-height: 1.6;
}
.ecc-faq summary::-webkit-details-marker { display: none; }
.ecc-faq summary::before {
  content: "Q";
  flex: 0 0 auto;
  width: 19px; height: 19px;
  margin-top: 1px;
  border-radius: 6px;
  background: var(--ecc-soft-2);
  color: var(--ecc-accent);
  font-size: 11px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.ecc-faq details[open] summary { color: var(--ecc-accent); }
.ecc-faq p { font-size: 13.5px; color: var(--ecc-muted); line-height: 1.85; margin: 9px 0 0 28px; }
.ecc-faq p b { color: var(--ecc-ink); }

.ecc-disclaimer {
  font-size: 12.5px;
  color: var(--ecc-muted);
  line-height: 1.8;
  margin: 18px 2px 0;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1020px) {
  .ecc-cards { grid-template-columns: 1fr 1fr; }
  .ecc-hero { grid-template-columns: 1fr; }
  .ecc-hero-tags { display: none; }
}
@media (max-width: 700px) {
  .ecc-cards { grid-template-columns: 1fr; }
  .ecc-best { grid-template-columns: 1fr; }
  .ecc-best-side { text-align: left; }
}
@media (max-width: 600px) {
  .ecc-shell { padding: 12px 12px 0; }
  .ecc-hero { padding: 20px 18px; }
  .ecc-hero h1 { font-size: 22px; }
  .ecc-block, .ecc-faq { padding: 16px 15px; }
  .ecc-list { grid-template-columns: 1fr; }
  .ecc-table { font-size: 11.5px; }
  .ecc-table th, .ecc-table td { padding: 8px 6px; }
  .ecc-actions .ecc-btn { flex: 1; }
}

/* ---------- 打印 ---------- */
@media print {
  .ecc-page { background: #fff; padding: 0; }
  .ecc-crumb, .ecc-hero-meta, .ecc-actions, .ecc-faq, .ecc-hero-tags,
  .ecc-disclaimer, .ecc-best-side { display: none !important; }
  .ecc-hero, .ecc-best, .ecc-card, .ecc-block, .ecc-faq { box-shadow: none; border-color: #bbb; }
  .ecc-cards { grid-template-columns: 1fr 1fr 1fr; }
  .ecc-card { break-inside: avoid; }
}