:root {
  --primary: #d96b43;
  --primary-soft: #f8e7df;
  --sky: #2c6e63;
  --sky-soft: #edf4f1;
  --mint: #2d7d58;
  --mint-soft: #eff8f2;
  --amber: #d96b43;
  --amber-soft: #f8e7df;
  --coral: #b64a45;
  --coral-soft: #fdf0ee;
  --ink: #163b36;
  --ink-soft: #65756f;
  --line: #dce5e1;
  --paper: #ffffff;
  --shadow: 0 18px 46px rgba(24, 65, 57, 0.08);
  --radius: 12px;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background:
    radial-gradient(900px 520px at 96% -8%, #dcece7 0%, transparent 56%),
    radial-gradient(620px 420px at -8% 44%, #f7e6dd 0%, transparent 52%),
    #f4f7f4;
  background-attachment: fixed;
}

#app { max-width: 1200px; }

.topbar {
  min-height: 72px;
  padding: 10px 24px;
  background: rgba(244, 247, 244, 0.88);
  border-bottom-color: rgba(220, 229, 225, 0.9);
  backdrop-filter: blur(18px);
}

.brand { gap: 11px; }
.brand-star {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--ink);
  color: transparent;
  font-size: 0;
}

.brand-star::after {
  content: "翎";
  color: #fff;
  font-size: 17px;
  font-weight: 800;
}

.brand-text {
  font-size: 17px;
  font-weight: 800;
}

.icon-btn {
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink);
  box-shadow: 0 8px 18px rgba(24, 65, 57, 0.05);
}

.view {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 110px;
}

.tabbar {
  max-width: 760px;
  bottom: 14px;
  border: 1px solid rgba(220, 229, 225, 0.92);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 18px 40px rgba(24, 65, 57, 0.12);
  overflow: hidden;
}

.tab,
.tab-link { padding: 8px 4px; }
.tab.active,
.tab-link:hover {
  color: var(--ink);
  background: var(--sky-soft);
}

.card,
.lesson-item,
.medal,
.choice,
.score {
  border-color: var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 28px rgba(24, 65, 57, 0.055);
}

.hero-card {
  background: var(--ink);
  border-color: var(--ink);
  padding: 28px;
  color: #fff;
  overflow: hidden;
  position: relative;
}

.hero-card::after {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  right: -130px;
  top: -160px;
  border: 68px solid rgba(255, 255, 255, 0.07);
  border-radius: 50%;
}

.hero-card .section-title {
  position: relative;
  z-index: 1;
  color: #fff;
  font-size: 25px;
  line-height: 1.35;
  margin-bottom: 22px;
}

.stats-row {
  position: relative;
  z-index: 1;
  gap: 12px;
}

.stat {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
  padding: 16px 8px;
}

.stat b { color: #fff; font-size: 27px; }
.stat span { color: #b9ccc5; }
.stat.amber b { color: #f2a27f; }

.section-title {
  color: var(--ink);
  font-size: 18px;
  margin: 22px 4px 12px;
}

.course-entry {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  border-left: 1px solid var(--line) !important;
  padding: 20px;
  box-shadow: 0 12px 30px rgba(24, 65, 57, 0.055);
}

.course-entry:hover {
  border-color: #bfd3cb;
  transform: translateY(-2px);
}

.course-entry .course-ico {
  background: var(--sky-soft) !important;
  color: var(--ink);
  border-radius: 12px;
}

.course-name { color: var(--ink); }
.course-arrow { color: var(--primary); }

.lesson-list { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.lesson-item { padding: 16px; }
.lesson-num { background: var(--ink); border-radius: 10px; }
.lesson-badge { background: var(--primary-soft); color: #9b4427; }
.progress-bar { background: #e5ece9; }
.progress-fill { background: var(--primary); }

.module-tab {
  border-radius: 999px;
  background: #fff;
}

.module-tab.active {
  background: var(--ink);
  border-color: var(--ink);
}

.btn {
  border-radius: 999px;
  box-shadow: none;
}

.btn-primary,
.btn-mint,
.btn-amber { background: var(--primary); color: #fff; }
.btn-coral { background: var(--coral); color: #fff; }
.btn-ghost { background: #fff; border-color: var(--line); color: var(--ink); }

.reading-line { border-radius: var(--radius); }
.reading-line.active { background: var(--sky-soft); border-color: #bfd8d0; }
.reading-play { background: var(--sky-soft); color: var(--forest); border-radius: 999px; }
.re1-sentence { background: var(--sky-soft); border-color: #cfdfda; border-radius: var(--radius); }
.re1-sentence-hidden { background: var(--primary-soft); border-color: var(--primary); }

.hold-btn {
  background: var(--primary);
  box-shadow: 0 14px 34px rgba(217, 107, 67, 0.28);
}

.word-row { border-bottom-color: var(--line); }
.word-pos { color: var(--primary); }
.choice.correct { background: var(--mint-soft); border-color: #a8d8bd; }
.choice.wrong { background: var(--coral-soft); border-color: #e7b6b0; }
.input { border-radius: 8px; background: #fff; }
.input:focus { outline: 3px solid rgba(217, 107, 67, 0.16); border-color: var(--primary); }
.feedback { background: var(--sky-soft); color: #37564f; }
.cal-day { border-radius: 9px; }
.cal-day.checked { background: var(--primary); border-color: var(--primary); color: #fff; }
.cal-day.today { border-color: var(--ink); color: var(--ink); }
.modal { border-radius: 14px; }
.toast { background: rgba(22, 59, 54, 0.94); }

@media (min-width: 760px) {
  .course-entry {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr) auto;
  }
  .module-tabs { margin-bottom: 18px; }
}

@media (max-width: 700px) {
  .view { padding: 16px 14px 104px; }
  .topbar { padding: 9px 14px; min-height: 64px; }
  .brand-text { font-size: 15px; }
  .tabbar { bottom: 8px; max-width: calc(100% - 16px); }
}