/* ====================================================================
   Study Terminal — site-wide design system
   cream paper + rose wash · sharp-cornered windows · 1px ink borders
   solid coral offset shadows · mono uppercase labels · serif display
   ==================================================================== */
:root {
  /* new tokens */
  --bg:          #f3eee1;
  --panel:       #fbf8ef;   /* window / card body */
  --panel-deep:  #ece4d1;   /* titlebars, cues, strips */
  --border:      #2b2620;   /* 1px window borders */
  --hairline:    #ddd3bd;   /* inner dividers */
  --coral:       #c05a3e;   /* actions / accent */
  --coral-deep:  #a84a32;
  --shadow-c:    #cf6a4b;   /* solid offset shadow color */
  --green:       #3e7d54;

  /* legacy aliases — older pages reference these names */
  --beige:       var(--bg);
  --beige-deep:  var(--panel-deep);
  --kraft:       var(--panel-deep);
  --paper:       var(--panel);
  --ink:         #211d15;
  --ink-soft:    #6f6659;
  --red:         var(--coral);
  --red-deep:    var(--coral-deep);
  --gold:        #d6a14a;
  --line:        var(--hairline);
  --rule:        rgba(120, 92, 50, 0.08);
  --shadow:      7px 7px 0 0 var(--shadow-c);
  --shadow-sm:   4px 4px 0 0 var(--border);

  --serif: "Newsreader", "Noto Serif SC", Georgia, "Songti SC", serif;
  --sans:  "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, Menlo, monospace;
  --maxw: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--sans); color: var(--ink); line-height: 1.7;
  background:
    radial-gradient(900px 480px at 8% -4%, rgba(233,169,148,.28), transparent 62%),
    radial-gradient(700px 420px at 100% 12%, rgba(214,161,74,.10), transparent 60%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.2; color: var(--ink); margin: 0; }
a { color: var(--coral); }
img { max-width: 100%; height: auto; display: block; border: 1px solid var(--border); box-shadow: var(--shadow); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 66px 0; }
.section.tight { padding: 50px 0; }
.section-title { font-size: clamp(1.6rem, 3.4vw, 2.2rem); margin: 10px 0 12px; }
.mt0 { margin-top: 0; } .mb0 { margin-bottom: 0; } .center { text-align: center; }
.lead { font-size: 1.08rem; color: var(--ink-soft); max-width: 62ch; margin: 0; }

/* mono label voice */
.tag, .eyebrow {
  font: 700 .68rem var(--mono); letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink-soft); margin: 0 0 8px; display: block;
}
.tag b, .eyebrow b { color: var(--coral); }

/* ---- header (both .hd and legacy .site-header) ---- */
.hd, .site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(243,238,225,.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.hd > .wrap, .site-header > .wrap {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; height: 60px;
  max-width: var(--maxw); width: 100%; box-sizing: border-box;
}
/* Keep header full-width even on lesson pages that narrow content wraps */
.lesson-page .hd > .wrap,
.lesson-page .site-header > .wrap { max-width: var(--maxw); }
.brand { flex: none; font-family: var(--serif); font-weight: 600; font-size: 1.12rem; color: var(--ink); text-decoration: none; white-space: nowrap; }
.brand .dot { color: var(--coral); }
.nav { display: flex; align-items: center; justify-content: flex-end; gap: 4px; margin-left: auto; min-width: 0; }
.nav-links { display: flex; gap: 2px; flex: none; overflow-x: auto; scrollbar-width: none; }
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a {
  font: 700 .68rem var(--mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-soft); text-decoration: none; padding: 9px 12px; white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover { color: var(--coral); }
.nav-links a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--coral); }
.lang-switch { flex: none; font: 700 .7rem var(--mono); letter-spacing: .1em; border: 1px solid var(--border); background: var(--panel); color: var(--ink); text-decoration: none; padding: 6px 12px; }

/* ---- signed-in chip (email + logout) ---- */
.auth-chip {
  display: none; align-items: center; gap: 8px; flex: none;
  font: 600 .72rem var(--sans); color: var(--ink-soft);
}
.auth-chip.is-on { display: inline-flex; }
.auth-chip-email { white-space: nowrap; }
.auth-chip-logout {
  flex: none; font: 700 .66rem var(--mono); letter-spacing: .06em; text-transform: uppercase;
  color: var(--coral); background: none; border: none; padding: 0; cursor: pointer; text-decoration: underline;
}
.auth-chip-logout:hover { color: var(--coral-deep); }

/* ---- day switcher (jump to any day of the 16-day course) ---- */
.day-switcher {
  /* Above sticky .lprogress (40) and hero .btn-unlock (transform stacking context). */
  position: relative;
  z-index: 55;
  background: var(--panel-deep); border-bottom: 1px solid var(--border);
  /* Reserve height before day-nav.js fills it, so page transitions don't flash a thin empty bar. */
  min-height: 50px;
  view-transition-name: day-switcher;
}
.hd, .site-header { view-transition-name: site-chrome; }
.day-switcher-inner { display: flex; align-items: center; gap: 10px; padding-top: 8px; padding-bottom: 8px; }
.day-switcher-arrow {
  flex: none; display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; font-size: 1.2rem; line-height: 1;
  color: var(--ink); text-decoration: none; border: 1px solid var(--border); background: var(--panel);
}
.day-switcher-arrow:hover { background: var(--coral); color: #fff; border-color: var(--coral-deep); }
.day-switcher-arrow.is-disabled { opacity: .35; pointer-events: none; }
.day-switcher-menu { position: relative; flex: 1; min-width: 0; }
.day-switcher-trigger {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 10px;
  font: 600 .85rem var(--sans); color: var(--ink); background: var(--panel);
  border: 1px solid var(--border); padding: 7px 10px; cursor: pointer; text-align: left;
  box-shadow: 3px 3px 0 0 var(--border);
}
.day-switcher-trigger:hover { background: var(--panel-deep); }
.day-switcher-trigger[aria-expanded="true"] { border-color: var(--coral); box-shadow: 3px 3px 0 0 var(--shadow-c); }
.day-switcher-current { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.day-switcher-chevron { flex: none; font-size: .8rem; color: var(--ink-soft); line-height: 1; }
.day-switcher-panel {
  position: absolute; top: calc(100% + 4px); left: 0; right: 0; z-index: 60;
  max-height: min(380px, 52vh); overflow: auto;
  background: var(--panel); border: 1px solid var(--border);
}
.day-switcher-panel[hidden] { display: none !important; }
.day-switcher-option {
  display: flex; flex-direction: column; gap: 3px; padding: 10px 12px;
  text-decoration: none; color: var(--ink); border-bottom: 1px solid var(--hairline);
}
.day-switcher-option:last-child { border-bottom: none; }
.day-switcher-option:hover { background: var(--panel-deep); }
.day-switcher-option.is-current {
  background: rgba(192, 90, 62, .08);
  border-left: 3px solid var(--coral);
  padding-left: 9px;
}
.day-switcher-day {
  font: 700 .68rem var(--mono); letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-soft);
}
.day-switcher-option:hover .day-switcher-day,
.day-switcher-option.is-current .day-switcher-day { color: var(--coral); }
.day-switcher-title { font-size: .84rem; line-height: 1.35; }
@media (max-width: 560px) {
  .day-switcher-inner { gap: 8px; }
  .day-switcher-arrow { width: 26px; height: 26px; font-size: 1.05rem; }
  .day-switcher-trigger { font-size: .8rem; padding: 7px 8px; }
  .day-switcher-title { font-size: .8rem; }
}
.lang-switch:hover { background: var(--coral); color: #fff; border-color: var(--coral); }

/* ---- hero (marketing pages) ---- */
.hero { padding: 68px 0 58px; }
.hero h1 { font-size: clamp(2rem, 4.6vw, 2.9rem); margin: 10px 0 16px; max-width: 22ch; letter-spacing: -.01em; }
.hero h1 em { font-style: italic; color: var(--coral); }
.hero p.sub, .hero .sub { font-size: 1.13rem; color: var(--ink-soft); max-width: 58ch; margin: 0 0 6px; }
.microcopy {
  display: inline-block; border: 1px solid var(--hairline); border-left: 3px solid var(--coral);
  background: var(--panel); padding: 9px 14px; font-size: .88rem; color: var(--ink-soft); margin: 14px 0 6px;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 24px; }

/* Course-like reading width for focused study pages. Header stays full-width. */
.study-page .hero > .wrap,
.study-page .section > .wrap {
  max-width: 880px;
}
/* homepage split hero: copy left, live-demo window right */
.hero-split { display: grid; grid-template-columns: 1.02fr 1fr; gap: 54px; align-items: center; }

/* ---- buttons ---- */
.btn { display: inline-block; font: 600 .95rem var(--sans); text-decoration: none; padding: 13px 24px; border: 1px solid var(--border); transition: transform .07s ease, background .15s ease, color .15s ease, box-shadow .15s ease; }
.btn:active { transform: translate(2px, 2px); }
.btn-primary { background: var(--coral); color: #fff; border-color: var(--coral-deep); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--coral-deep); }
.btn-ghost { background: var(--panel); color: var(--ink); box-shadow: 4px 4px 0 0 rgba(43,38,32,.25); }
.btn-ghost:hover { color: var(--coral); }

/* Unlock CTAs: heavier than default primary so they don’t blend into the page */
.btn-unlock {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .3em;
  background: var(--coral-deep);
  color: #fffaf5;
  border: 2px solid var(--border);
  box-shadow: 5px 5px 0 0 var(--border);
  font-weight: 700;
  letter-spacing: .01em;
  padding: 13px 18px;
  white-space: nowrap;
  animation: unlock-nudge 3.2s ease-in-out infinite;
}
.btn-unlock .lu {
  flex-shrink: 0;
  width: 1.05em;
  height: 1.05em;
  vertical-align: 0;
}
.btn-unlock:hover {
  background: #933f2a;
  color: #fff;
  box-shadow: 6px 6px 0 0 var(--border);
}
.btn-unlock:active {
  transform: translate(3px, 3px);
  box-shadow: 2px 2px 0 0 var(--border);
  animation: none;
}
@keyframes unlock-nudge {
  0%, 78%, 100% { transform: translate(0, 0); box-shadow: 5px 5px 0 0 var(--border); }
  84% { transform: translate(0, -2px); box-shadow: 5px 7px 0 0 var(--border); }
  90% { transform: translate(0, 0); box-shadow: 5px 5px 0 0 var(--border); }
  94% { transform: translate(0, -1px); box-shadow: 5px 6px 0 0 var(--border); }
}

.hero-unlock {
  border: 2px solid var(--border);
  border-top: 5px solid var(--coral-deep);
  background:
    linear-gradient(180deg, #fff4ea 0%, var(--panel) 55%);
  box-shadow: 10px 10px 0 0 var(--border);
  padding: 22px 20px 20px;
}
.hero-unlock .eyebrow { margin: 0 0 6px; color: var(--coral-deep); }
.hero-unlock h2 { font-size: 1.22rem; margin: 0 0 8px; }
.hero-unlock p { margin: 0 0 14px; color: var(--ink-soft); font-size: .9rem; line-height: 1.5; }
.hero-unlock .btn { width: 100%; text-align: center; box-sizing: border-box; }
.hero-unlock .already { margin: 12px 0 0; font-size: .82rem; color: var(--ink-soft); }
.hero-unlock .already a { color: var(--coral-deep); font-weight: 600; }

@media (prefers-reduced-motion: reduce) {
  .btn-unlock { animation: none; }
}

/* ---- trust strip (both .strip and legacy .trust) ---- */
.strip, .trust { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--panel-deep); }
.strip .wrap, .trust .wrap { display: flex; flex-wrap: wrap; gap: 8px 34px; justify-content: center; padding: 13px 24px; }
.strip span, .trust span { font: 700 .68rem var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); }
.strip .star, .trust .star { color: var(--gold); letter-spacing: .05em; }

/* ---- windows ---- */
.win { border: 1px solid var(--border); background: var(--panel); box-shadow: 12px 12px 0 0 var(--shadow-c); }
.win-bar { display: flex; align-items: center; gap: 10px; padding: 10px 16px; background: var(--panel-deep); border-bottom: 1px solid var(--border); }
.win-dots { display: flex; gap: 6px; flex: none; }
.win-dots i { width: 10px; height: 10px; border-radius: 50%; }
.win-dots i:nth-child(1) { background: #d95c4a; }
.win-dots i:nth-child(2) { background: var(--gold); }
.win-dots i:nth-child(3) { background: #7ba05b; }
.win-title { font: 700 .68rem var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--ink-soft); }
.win-title b { color: var(--ink); font-weight: 700; }
.win-status { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--border); background: var(--panel-deep); padding: 8px 16px; font: 700 .64rem var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); }
.win-status .ok { color: var(--green); }

/* ---- grids & cards ---- */
.grid { display: grid; gap: 26px; }
.grid.cols-3, .cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2, .cols-2 { grid-template-columns: repeat(2, 1fr); }

.wcard, .card { border: 1px solid var(--border); background: var(--panel); box-shadow: var(--shadow); transition: transform .1s ease, box-shadow .1s ease; }
.wcard:hover, .card:hover { transform: translate(-2px, -2px); box-shadow: 9px 9px 0 0 var(--shadow-c); }
.wcard .wcard-bar { padding: 8px 16px; border-bottom: 1px solid var(--border); background: var(--panel-deep); font: 700 .64rem var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--ink-soft); }
.wcard .body { padding: 18px 18px 20px; }
.card { padding: 22px 22px 24px; }
.wcard h3, .card h3 { font-size: 1.16rem; margin: 0 0 8px; }
.wcard p, .card p { margin: 0 0 14px; color: var(--ink-soft); font-size: .94rem; }
.wcard .more, .card .more { font: 700 .72rem var(--mono); letter-spacing: .12em; text-transform: uppercase; text-decoration: none; color: var(--coral); }
.wcard .more::after, .card .more::after { content: " →"; }

/* lesson block */
.lesson { background: var(--panel); border: 1px solid var(--border); border-left: 3px solid var(--coral); padding: 20px 22px; }
.lesson ul { margin: 0; padding-left: 20px; }
.lesson li { margin: 9px 0; }
.callout { border: 1px solid var(--hairline); border-left: 3px solid var(--gold); background: var(--panel); padding: 13px 16px; color: var(--ink-soft); font-size: .9rem; margin-top: 20px; }
.disclaimer { font-size: .9rem; }

/* Cornell sample table */
.note-table { width: 100%; border-collapse: collapse; background: var(--panel); border: 1px solid var(--border); box-shadow: var(--shadow); }
.note-table th, .note-table td { text-align: left; padding: 12px 15px; border-bottom: 1px solid var(--hairline); vertical-align: top; font-size: .95rem; }
.note-table th { background: var(--panel-deep); border-bottom: 1px solid var(--border); font: 700 .68rem var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); }
.note-table td:first-child { font-family: var(--serif); font-weight: 600; white-space: nowrap; width: 1%; border-right: 1px solid var(--hairline); background: rgba(236,228,209,.45); }
.note-table tr:last-child td { border-bottom: none; }

/* ---- flip cards ---- */
.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.flip { background: transparent; perspective: 1000px; height: 172px; cursor: pointer; border: none; padding: 0; font-family: inherit; }
.flip-inner, .flip .flip-inner { display: block; position: relative; width: 100%; height: 100%; transition: transform .45s; transform-style: preserve-3d; }
.flip.flipped .flip-inner { transform: rotateY(180deg); }
.flip-face { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; border: 1px solid var(--border); padding: 18px; display: flex; flex-direction: column; justify-content: center; text-align: center; }
.flip-front { background: var(--panel); box-shadow: 5px 5px 0 0 var(--shadow-c); }
.flip-front .term { font-family: var(--serif); font-weight: 600; font-size: 1.16rem; }
.flip-front .ipa { font: 500 .74rem var(--mono); color: var(--ink-soft); margin-top: 6px; letter-spacing: .05em; }
.flip-front .hint { position: absolute; bottom: 10px; left: 0; right: 0; font: 700 .58rem var(--mono); color: #b3a88f; letter-spacing: .14em; text-transform: uppercase; }
.flip-back { background: var(--coral); color: #fff8f2; transform: rotateY(180deg); font-size: .94rem; line-height: 1.5; }
.flip-back .fc-gloss { display: block; font-family: var(--serif); font-weight: 600; font-size: 1.05rem; margin-bottom: 8px; }
.flip-back .fc-def { display: block; font-size: .9rem; line-height: 1.45; opacity: .96; }

/* ---- full flashcard deck page ---- */
.fc-status { color: var(--ink-soft); font-size: .92rem; margin: 0 0 18px; }
.fc-deck { max-width: 560px; margin: 0 auto 36px; }
.fc-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.fc-progress { margin: 0; font: 700 .72rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); }
.fc-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.fc-btn { padding: 8px 12px !important; font-size: .78rem !important; }
.fc-stage.flip { width: 100%; height: 280px; }
.fc-stage .flip-front .term { font-size: clamp(1.25rem, 3.5vw, 1.7rem); }
.fc-stage .flip-back {
  padding: 28px 32px; overflow: auto;
  align-items: center; justify-content: center; text-align: center;
  font-size: clamp(1.05rem, 2.6vw, 1.25rem); line-height: 1.55;
}
.fc-stage .flip-back .fc-gloss {
  font-size: clamp(1.2rem, 3vw, 1.45rem); margin-bottom: 12px;
}
.fc-stage .flip-back .fc-def {
  font-size: clamp(1.02rem, 2.4vw, 1.18rem); line-height: 1.55;
}
.fc-gate { margin: 28px 0 8px; }
.fc-gate[hidden] { display: none !important; }
.btn-unlock[hidden],
[data-unlock-cta][hidden],
[data-purchased-cta][hidden] { display: none !important; }

/* Purchased visitors: skip the paywall flash between day pages. */
html.is-purchased #gate { display: none !important; }
html.is-purchased #lessonRoot { display: block !important; }
html.is-purchased #heroUnlockCta:not([data-ready]) { visibility: hidden; }
.fc-gate-box {
  max-width: 520px; margin: 0 auto; background: var(--panel); border: 1px solid var(--border);
  border-top: 4px solid var(--coral); box-shadow: 10px 10px 0 0 var(--shadow-c); padding: 28px 26px; text-align: center;
}
.fc-gate-box p { color: var(--ink-soft); margin: 0 0 16px; }
.fc-gate-box .btn { display: inline-block; }
.gate-note { font-size: .86rem; margin: 14px 0 0 !important; }
.gate-note a { color: var(--coral); }
.fc-locked-note {
  margin-top: 18px; padding: 12px 14px; border: 1px dashed var(--border); background: var(--panel);
  color: var(--ink-soft); font-size: .9rem; text-align: center;
}
@media (max-width: 640px) {
  .fc-stage.flip { height: 240px; }
  .fc-actions { width: 100%; }
  .fc-btn { flex: 1; text-align: center; }
}

/* ---- product / pricing ---- */
.prod { display: grid; grid-template-columns: 1.1fr 1fr; gap: 30px; align-items: center; }
.price { font: 700 1.05rem var(--mono); color: var(--coral); }
.kv { width: 100%; border-collapse: collapse; margin: 0 0 16px; }
.kv td { padding: 6px 0; font-size: .88rem; border-bottom: 1px dashed var(--hairline); }
.kv td:first-child { color: var(--ink-soft); font: 500 .74rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.kv td:last-child { text-align: right; font-weight: 600; }
.kv tr:last-child td { border-bottom: none; }
.kv .ok { color: var(--green); font: 700 .78rem var(--mono); }
.feature-table { width: 100%; border-collapse: collapse; }
.feature-table td { padding: 8px 10px; border-bottom: 1px dashed var(--hairline); font-size: .93rem; }
.feature-table td:first-child { color: var(--ink-soft); width: 42%; }

/* ---- free vs paid ---- */
.fp { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.fp .col { border: 1px solid var(--border); padding: 20px 22px; }
.fp .free { background: var(--panel); box-shadow: var(--shadow); }
.fp .paid { background: #262119; color: #f4ecda; box-shadow: 7px 7px 0 0 var(--border); }
.fp h3 { color: inherit; margin: 0 0 10px; }
.fp ul { margin: 0; padding-left: 18px; }
.fp li { margin: 8px 0; }
.fp .win { box-shadow: 9px 9px 0 0 var(--shadow-c); }
.fp .win ul { padding: 18px 20px 20px 36px; }
.fp .win li { margin: 7px 0; font-size: .95rem; }
.fp .win.paid { background: var(--panel); color: var(--ink); }
.fp .win.paid .win-bar { background: var(--ink); border-color: var(--ink); }
.fp .win.paid .win-bar .win-title { color: #cdbfa8; }
.fp .win.paid .win-bar .win-title b { color: #f4ecda; }

/* ---- decision guide ---- */
.guide { display: grid; gap: 12px; }
.guide .row { border: 1px solid var(--hairline); background: var(--panel); padding: 13px 18px; display: flex; gap: 14px; align-items: baseline; flex-wrap: wrap; }
.guide .row b { color: var(--coral); font-family: var(--serif); white-space: nowrap; }

/* ---- steps ---- */
.steps { list-style: none; margin: 26px 0 0; padding: 0; border: 1px solid var(--border); background: var(--panel); box-shadow: 10px 10px 0 0 var(--shadow-c); }
.steps li { display: flex; gap: 18px; align-items: baseline; padding: 15px 20px; border-bottom: 1px solid var(--hairline); }
.steps li:last-child { border-bottom: none; }
.steps .num { font: 700 .78rem var(--mono); color: var(--coral); flex: none; width: auto; height: auto; border-radius: 0; background: none; display: inline; }
.steps b { font-family: var(--serif); font-size: 1.03rem; font-weight: 600; }
.steps p { margin: 2px 0 0; color: var(--ink-soft); font-size: .92rem; }

/* ---- California license guide ---- */
.license-facts {
  display: grid; grid-template-columns: repeat(4, 1fr); margin: 26px 0 0;
  border: 1px solid var(--border); background: var(--panel);
  box-shadow: 8px 8px 0 0 var(--border);
}
.license-fact { padding: 17px 18px; border-right: 1px solid var(--hairline); }
.license-fact:last-child { border-right: none; }
.license-fact strong {
  display: block; font: 600 clamp(1.45rem, 3vw, 2rem) var(--serif);
  color: var(--coral-deep); line-height: 1.05;
}
.license-fact span {
  display: block; margin-top: 6px; font: 700 .64rem var(--mono);
  letter-spacing: .11em; text-transform: uppercase; color: var(--ink-soft);
}
.steps.license-steps li { align-items: flex-start; padding: 20px; }
.steps.license-steps .num { padding-top: 3px; }
.steps.license-steps b { font-size: 1.12rem; }
.steps.license-steps p { margin-top: 5px; line-height: 1.65; }
.course-list {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
  margin: 12px 0 3px;
}
.course-list span {
  border: 1px solid var(--hairline); background: var(--bg);
  padding: 8px 10px; font-size: .82rem; line-height: 1.35;
}
.course-list .course-required { border-left: 3px solid var(--coral); }
.course-list .course-elective { border-left: 3px solid var(--gold); }
.license-note {
  margin-top: 10px; padding: 9px 11px; background: var(--panel-deep);
  border-left: 3px solid var(--gold); color: var(--ink-soft); font-size: .86rem;
}
.exam-weight-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px;
  margin-top: 24px;
}
.exam-weight {
  display: grid; grid-template-columns: 58px 1fr; gap: 14px;
  align-items: start; background: var(--panel); border: 1px solid var(--border);
  padding: 16px 18px;
}
.exam-weight .pct {
  font: 700 1.1rem var(--mono); color: var(--coral-deep);
  border-right: 1px solid var(--hairline); padding-right: 12px;
}
.exam-weight h3 { font-size: 1.05rem; margin: 0 0 4px; }
.exam-weight p { margin: 0; color: var(--ink-soft); font-size: .86rem; line-height: 1.5; }
.official-links { margin: 14px 0 0; padding-left: 20px; }
.official-links li { margin: 5px 0; }

/* ---- about / faq ---- */
.about { border: 1px solid var(--border); background: var(--panel); box-shadow: var(--shadow); padding: 26px 28px; }
.about-win .body { padding: 24px 26px; font-size: 1.06rem; line-height: 1.75; }
.about-win .body .sig { font: 700 .68rem var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--ink-soft); margin-top: 14px; }
.faq details { border: 1px solid var(--hairline); background: var(--panel); margin-bottom: 10px; padding: 2px 18px; }
.faq summary { cursor: pointer; font-family: var(--serif); font-weight: 600; padding: 12px 0; }
.faq p { color: var(--ink-soft); margin: 0 0 14px; }

/* ---- footer (both .ft and legacy .site-footer) ---- */
.ft, .site-footer { background: #262119; color: #cdbfa8; padding: 46px 0; font-size: .9rem; border-top: 1px solid var(--border); }
.ft a, .site-footer a { color: #f4ecda; text-decoration: none; }
.ft a:hover, .site-footer a:hover { color: var(--gold); }
.ft-grid, .footer-grid { display: flex; flex-wrap: wrap; gap: 34px; justify-content: space-between; }
.ft h4, .footer-grid h4 { font: 700 .68rem var(--mono); letter-spacing: .18em; text-transform: uppercase; color: #f4ecda; margin: 0 0 12px; }
.ft ul, .footer-grid ul { list-style: none; margin: 0; padding: 0; }
.ft li, .footer-grid li { margin: 7px 0; }

/* ---- homepage live-demo window ---- */
.demo-wrap { padding: 6px 16px 20px 0; }
.demo-kicker { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.demo-kicker .tag { margin: 0; display: inline; }
.demo-kicker .pill { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--border); background: var(--panel); padding: 5px 12px; font: 700 .68rem var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.demo-kicker .pill i { width: 7px; height: 7px; background: var(--coral); display: inline-block; }
.tabs { display: flex; gap: 24px; padding: 0 18px; border-bottom: 1px solid var(--border); background: var(--panel); }
.tabs button { font: 700 .7rem var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); background: none; border: none; border-bottom: 2px solid transparent; padding: 12px 0 10px; cursor: pointer; margin-bottom: -1px; }
.tabs button:hover { color: var(--coral); }
.tabs button.active { color: var(--ink); border-bottom-color: var(--coral); }
.panes { position: relative; min-height: 240px; }
.pane { display: none; padding: 20px 18px; }
.pane.active { display: block; }
.pane-hint { font: 500 .66rem var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft); margin: 0 0 12px; }
.pane-hint b { color: var(--green); }
.crow { display: grid; grid-template-columns: 118px 1fr; border: 1px solid var(--hairline); margin-bottom: 10px; }
.crow .cue { background: var(--panel-deep); border-right: 1px solid var(--hairline); padding: 13px 12px; font-family: var(--serif); font-weight: 600; font-size: .9rem; }
.crow .note { position: relative; padding: 13px 14px; font-size: .86rem; }
.crow .note .cover { position: absolute; inset: 4px; border: 1px dashed #b6a67f; background: repeating-linear-gradient(-45deg, #e9e0ca, #e9e0ca 8px, #e3d8bf 8px, #e3d8bf 16px); display: flex; align-items: center; justify-content: center; font: 700 .62rem var(--mono); letter-spacing: .12em; text-transform: uppercase; color: #85764f; cursor: pointer; transition: opacity .18s; }
.crow .note .cover:hover { color: var(--coral); border-color: var(--coral); }
.crow .note.open .cover { opacity: 0; pointer-events: none; }
.fcard { perspective: 900px; height: 168px; cursor: pointer; }
.fcard-inner { position: relative; width: 100%; height: 100%; transition: transform .45s; transform-style: preserve-3d; }
.fcard.flipped .fcard-inner { transform: rotateY(180deg); }
.fface { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; border: 1px solid var(--border); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 16px; }
.fface.front { background: var(--panel); }
.fface.front .term { font-family: var(--serif); font-weight: 600; font-size: 1.3rem; }
.fface.front .ipa { font: 500 .72rem var(--mono); color: var(--ink-soft); margin-top: 8px; letter-spacing: .06em; }
.fface.back { background: var(--coral); color: #fff8f2; transform: rotateY(180deg); font-size: .92rem; line-height: 1.55; }
.qq { font-family: var(--serif); font-weight: 600; font-size: 1.02rem; margin: 0 0 12px; }
.qopts { display: grid; gap: 7px; }
.qopt { text-align: left; font: 500 .88rem var(--sans); background: var(--panel); border: 1px solid var(--hairline); padding: 10px 13px; cursor: pointer; color: var(--ink); }
.qopt:hover { border-color: var(--coral); }
.qopt.correct { border-color: var(--green); background: #3e7d5414; font-weight: 600; }
.qopt.correct::after { content: "  ✓ correct"; font: 700 .62rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--green); }
.qopt.wrong { border-color: var(--coral); color: var(--coral); text-decoration: line-through; }
.qexpl { display: none; margin-top: 12px; border-left: 3px solid var(--green); background: var(--panel-deep); padding: 9px 13px; font-size: .84rem; color: var(--ink-soft); }
.qdone .qexpl { display: block; }

/* ---- root language chooser (noscript fallback) ---- */
.chooser { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.chooser .box { background: var(--panel); border: 1px solid var(--border); box-shadow: 12px 12px 0 0 var(--shadow-c); padding: 44px; text-align: center; max-width: 480px; }
.chooser h1 { font-size: 1.7rem; margin: 0 0 6px; }
.chooser p { color: var(--ink-soft); }
.chooser .langs { display: flex; gap: 16px; justify-content: center; margin-top: 22px; flex-wrap: wrap; }

/* ---- responsive ---- */
@media (max-width: 900px) {
  .grid.cols-3, .grid.cols-2, .cols-3, .cols-2, .cards-grid { grid-template-columns: 1fr; }
  .cards-grid { grid-template-columns: 1fr 1fr; }
  .license-facts { grid-template-columns: repeat(2, 1fr); }
  .license-fact:nth-child(2) { border-right: none; }
  .license-fact:nth-child(-n+2) { border-bottom: 1px solid var(--hairline); }
  .course-list, .exam-weight-grid { grid-template-columns: 1fr; }
  .prod, .fp { grid-template-columns: 1fr; }
  .hd .wrap, .site-header .wrap { height: auto; flex-wrap: wrap; padding-top: 10px; padding-bottom: 8px; row-gap: 4px; }
  .nav { flex: 1 1 100%; justify-content: space-between; }
  .hero { padding: 50px 0 44px; }
  .hero-split { grid-template-columns: 1fr; gap: 40px; }
  .demo-wrap { padding-right: 14px; }
}
@media (max-width: 520px) {
  .cards-grid { grid-template-columns: 1fr; }
  .section { padding: 46px 0; }
  .cta-row .btn { width: 100%; text-align: center; }
  .win, .steps { box-shadow: 8px 8px 0 0 var(--shadow-c); }
}
@media (prefers-reduced-motion: reduce) {
  .flip-inner, .fcard-inner, .btn, .wcard, .card { transition: none; }
}

/* Soft, short page crossfade. Keep under ~100ms so day switches feel instant. */
@view-transition { navigation: auto; }
@keyframes page-fade-out { to { opacity: 0; } }
@keyframes page-fade-in { from { opacity: 0; } }
::view-transition-old(root) {
  animation: .08s ease-out both page-fade-out;
  mix-blend-mode: normal;
}
::view-transition-new(root) {
  animation: .1s ease-out both page-fade-in;
  mix-blend-mode: normal;
}
::view-transition-image-pair(root) {
  isolation: isolate;
}
/* Keep sticky chrome stable — don't dissolve the day switcher into a thin bar. */
::view-transition-group(site-chrome),
::view-transition-group(day-switcher) {
  animation-duration: .01s;
}
::view-transition-old(site-chrome),
::view-transition-new(site-chrome),
::view-transition-old(day-switcher),
::view-transition-new(day-switcher) {
  animation: none;
  mix-blend-mode: normal;
}
@media (prefers-reduced-motion: reduce) {
  @view-transition { navigation: none; }
}

/* ====================================================================
   Chinese typography tuning — the mono-label voice is sized for Latin;
   CJK glyphs need larger sizes, tighter tracking, looser line-height.
   ==================================================================== */
html[lang="zh-CN"] .brand { font-size: 1.28rem; }
html[lang="zh-CN"] .nav-links a { font: 600 .84rem var(--sans); letter-spacing: .06em; padding: 8px 12px; }
html[lang="zh-CN"] .hero h1 { letter-spacing: 0; line-height: 1.32; font-size: clamp(1.9rem, 4.2vw, 2.6rem); }
html[lang="zh-CN"] .section-title { letter-spacing: 0; line-height: 1.35; }
html[lang="zh-CN"] .tag, html[lang="zh-CN"] .eyebrow { font-size: .8rem; letter-spacing: .1em; }
html[lang="zh-CN"] .win-title { font-size: .78rem; letter-spacing: .08em; }
html[lang="zh-CN"] .tabs button { font-size: .84rem; letter-spacing: .05em; }
html[lang="zh-CN"] .pane-hint { font-size: .78rem; letter-spacing: .05em; }
html[lang="zh-CN"] .strip span, html[lang="zh-CN"] .trust span { font-size: .8rem; letter-spacing: .08em; }
html[lang="zh-CN"] .wcard-bar { font-size: .74rem; letter-spacing: .08em; }
html[lang="zh-CN"] .win-status { font-size: .74rem; letter-spacing: .06em; }
html[lang="zh-CN"] .demo-kicker .pill { font-size: .8rem; letter-spacing: .06em; }
html[lang="zh-CN"] .crow .note .cover { font-size: .78rem; letter-spacing: .05em; }
html[lang="zh-CN"] .kv td:first-child { font-size: .82rem; letter-spacing: .04em; }
html[lang="zh-CN"] .more { font-size: .8rem !important; letter-spacing: .05em !important; }
html[lang="zh-CN"] .lang-switch { font-size: .78rem; }
/* day-1 lesson page */
html[lang="zh-CN"] .lprogress .label { font-size: .74rem; letter-spacing: .05em; }
html[lang="zh-CN"] .recall-toggle { font-size: .8rem; letter-spacing: .05em; }
html[lang="zh-CN"] .cover-btn { font-size: .78rem; letter-spacing: .05em; }
html[lang="zh-CN"] .chip { font-size: .82rem; }
html[lang="zh-CN"] .quiz-q .qnum { font-size: .76rem; letter-spacing: .08em; }
html[lang="zh-CN"] .ex-score { font-size: .82rem; letter-spacing: .02em; }
html[lang="zh-CN"] .syllabus .lock { font-size: .74rem; letter-spacing: .04em; }
html[lang="zh-CN"] .ft h4, html[lang="zh-CN"] .footer-grid h4 { font-size: .8rem; letter-spacing: .1em; }
/* the 中文 button on EN pages is CJK too */
.lang-switch { font-size: .78rem; }

/* ====================================================================
   Lucide inline icons — replace emoji site-wide (2026-07-16)
   coral = critical attention (test points, watch-outs)
   gold  = positive highlight (examples, ratings)
   green = complete/content accent (checklists, one-off nature icon)
   soft  = neutral utility (time, count, lock, disclaimer, audio)
   ==================================================================== */
.lu { width: 1em; height: 1em; display: inline-block; vertical-align: -0.15em; overflow: visible; }
.lu, .lu use { fill: none; stroke: currentColor; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.lu-coral { color: var(--coral); }
.lu-gold { color: var(--gold); }
.lu-soft { color: var(--ink-soft); }
.lu-green { color: var(--green); }
.lu-fill { fill: currentColor; stroke: none; }