/* ============================================================
   100-Day Codex Challenge — Optivise-inspired styling
   Palette: navy #17324d, gold #b78c35, soft warm-white surfaces
   Fonts:   Cormorant Garamond (serif) + Space Grotesk (sans)
   ============================================================ */

:root {
  /* Surfaces — warmer near-white stone, less blueish */
  --bg:            #ecede8;
  --bg-soft:       #f4f4f0;
  --surface:       rgba(255, 255, 255, 0.92);
  --surface-strong:#ffffff;
  --surface-deep:  #fafaf7;
  --line:          rgba(30, 35, 42, 0.09);
  --line-strong:   rgba(30, 35, 42, 0.18);

  /* Ink — graphite with slight warmth, more contemporary than navy */
  --text:          #1e232a;
  --text-soft:     #3a4150;
  --text-muted:    #6b7380;
  --text-faint:    #9aa0aa;

  /* Brand — keep gold for warmth but more refined; add ink-blue accent for actions */
  --accent:        #b08732;
  --accent-soft:   #e4cc8c;
  --accent-deep:   #7c5e1e;
  --ink-accent:    #2e6cf6;     /* primary CTA / link */
  --ink-accent-d:  #1d4fd8;

  /* Semantic */
  --ok:            #1f9962;
  --warn:          #d68630;
  --danger:        #d04848;
  --info:          #4d7bff;

  /* Shadows — flatter, more modern (lower y-offset, softer blur) */
  --shadow-soft:   0 8px 24px rgba(30, 35, 42, 0.06);
  --shadow-strong: 0 16px 48px rgba(30, 35, 42, 0.14);
  --shadow-card:   0 4px 14px rgba(30, 35, 42, 0.06);

  /* Radii — tighter, less "blobby" */
  --radius:    18px;
  --radius-md: 12px;
  --radius-sm: 8px;

  --max-width:    1240px;
  --header-h:     72px;

  /* Stage track-card lane width on desktop */
  --track-lane:   72px;
}

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

html, body { margin: 0; }
html { background: #02050a; scroll-behavior: smooth; }

body {
  min-height: 100vh;
  color: var(--text-soft);
  font-family: "Inter", "Space Grotesk", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  opacity: 0.5;
  background-image:
    radial-gradient(rgba(30, 35, 42, 0.07) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 90%);
}

/* ============================================================
   Typography
   ============================================================ */

h1, h2, h3, h4 {
  margin: 0 0 0.4em;
  color: var(--text);
  font-family: "Inter", "Space Grotesk", "PingFang SC", sans-serif;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.22;
}

/* Keep serif for hero title only (brand moment) */
.hero-title, .hero-title__accent {
  font-family: "Cormorant Garamond", "Songti SC", serif;
  font-weight: 500;
  letter-spacing: 0.005em;
}

h1 { font-size: clamp(1.9rem, 4.2vw, 2.6rem); font-weight: 700; }
h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); }
h3 { font-size: 1.15rem; }
h4 { font-size: 0.96rem; letter-spacing: 0.01em; }

p { margin: 0 0 1em; }
a { color: var(--text); text-decoration: none; transition: color 180ms; }
a:hover { color: var(--accent); }

.eyebrow {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6em;
}

.accent { color: var(--accent); font-style: italic; }

/* ============================================================
   Layout shell
   ============================================================ */

.shell {
  width: min(calc(100% - 48px), var(--max-width));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

main { position: relative; z-index: 2; padding-bottom: 96px; }

.view { display: none; }
.view.is-active { display: block; animation: viewFade 280ms ease; }
@keyframes viewFade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.section { padding: 88px 0; }
.section--tight { padding: 56px 0; }

/* ============================================================
   Header
   ============================================================ */

.site-header-wrap {
  position: sticky; top: 0; z-index: 40;
  border-bottom: 1px solid rgba(255, 255, 255, 0.45);
  background:
    linear-gradient(135deg, rgba(255,255,255,0.35), rgba(255,255,255,0.18) 60%, rgba(217,190,119,0.10)),
    rgba(248, 248, 245, 0.18);
  box-shadow:
    0 12px 36px rgba(30, 35, 42, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.55);
  -webkit-backdrop-filter: blur(28px) saturate(1.6);
  backdrop-filter: blur(28px) saturate(1.6);
}

.site-header {
  display: flex; align-items: center; gap: 18px;
  padding: 12px max(28px, calc((100vw - var(--max-width)) / 2 + 22px));
  padding-right: max(82px, calc((100vw - var(--max-width)) / 2 + 76px)); /* reserve space for fixed top-right gear */
  min-height: var(--header-h);
}

.site-logo {
  display: inline-flex; align-items: center;
  color: var(--text); text-decoration: none;
  line-height: 0;
}

.site-logo__img {
  display: block;
  height: 72px;
  width: auto;
  object-fit: contain;
  margin: -10px 0;
}

/* ── Bottom function bar (all sizes) ── */
.site-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  padding: 10px 18px calc(10px + env(safe-area-inset-bottom, 0px));
  background:
    linear-gradient(180deg, rgba(255,255,255,0.30), rgba(255,255,255,0.18)),
    rgba(248, 248, 245, 0.16);
  border-top: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow:
    0 -10px 32px rgba(30, 35, 42, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
  -webkit-backdrop-filter: blur(28px) saturate(1.6);
  backdrop-filter: blur(28px) saturate(1.6);
}

.nav-link {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; min-height: 44px;
  font-size: 0.7rem; font-weight: 500;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-muted);
  border-radius: 999px;
  cursor: pointer;
  background: transparent; border: 0;
  white-space: nowrap;
  flex: 0 0 auto;
  transition: color 180ms, background 180ms, transform 180ms;
}
.nav-link:hover {
  color: var(--text);
  background: rgba(183, 140, 53, 0.08);
}
.nav-link.is-active {
  color: var(--accent-deep);
  background: rgba(183, 140, 53, 0.14);
}
.nav-link.is-active .nav-link__icon { transform: scale(1.08); }

.nav-link__icon {
  display: inline-flex;
  font-size: 1.05rem;
  line-height: 1;
  letter-spacing: 0;
  transition: transform 180ms;
}
.nav-link__cn, .nav-link__en { display: inline; }

/* Reserve space at the bottom of every page for the fixed bar */
main { padding-bottom: 120px; }
footer.site-footer { margin-bottom: 72px; }

/* ── Settings gear — pinned top-right (glass) ── */
.settings-gear {
  position: fixed;
  top: 14px;
  right: max(18px, calc((100vw - var(--max-width)) / 2 + 22px));
  z-index: 60;
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 50%;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.55), rgba(255,255,255,0.22)),
    rgba(248, 248, 245, 0.20);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  backdrop-filter: blur(20px) saturate(1.5);
  box-shadow:
    0 8px 24px rgba(30, 35, 42, 0.10),
    inset 0 1px 0 rgba(255,255,255,0.6);
  color: var(--text);
  font-size: 1.25rem;
  cursor: pointer;
  transition: transform 200ms, background 180ms, box-shadow 200ms;
}
.settings-gear:hover {
  background: rgba(255,255,255,0.85);
  transform: rotate(45deg);
  box-shadow: 0 12px 28px rgba(30,35,42,0.14);
}
.settings-gear.is-active {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #fff;
  border-color: transparent;
}

.nav-user {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 6px 6px 14px; min-height: 38px;
  border-radius: 999px;
  background: rgba(255,255,255,0.62);
  border: 1px solid var(--line);
  color: var(--text); font-size: 0.78rem; font-weight: 600;
  cursor: pointer;
}
.nav-user .avatar { width: 28px; height: 28px; font-size: 1rem; }

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 12px 22px; min-height: 44px;
  border: 1px solid transparent; border-radius: 999px;
  font-family: inherit; font-size: 0.85rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  cursor: pointer; text-decoration: none;
  transition: transform 180ms, box-shadow 200ms, background 200ms, color 200ms;
}

.btn-primary {
  background: linear-gradient(135deg, var(--text), #1f4264);
  color: #fff;
  box-shadow: 0 14px 32px rgba(23,50,77,0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(23,50,77,0.34); color: #fff; }

.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #fff;
  box-shadow: 0 14px 30px rgba(183, 140, 53, 0.34);
}
.btn-accent:hover { transform: translateY(-2px); color: #fff; }

.btn-ghost {
  background: rgba(255,255,255,0.7);
  color: var(--text); border-color: var(--line);
}
.btn-ghost:hover { background: #fff; border-color: var(--line-strong); }

.btn-sm { padding: 8px 14px; font-size: 0.7rem; min-height: 34px; }

/* ============================================================
   Splash (home view — first impression / loading)
   ============================================================ */

.view-home { padding-bottom: 0; }

.splash {
  min-height: calc(100vh - var(--header-h));
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 36px;
  padding: 32px 24px 96px;
  position: relative;
}
.splash__brand {
  margin: 0;
  line-height: 0;
  animation: splash-fade-in 700ms ease-out both;
}
.splash__img {
  display: block;
  max-width: min(640px, 92vw);
  width: 100%;
  height: auto;
}
.splash__loader {
  display: inline-flex; gap: 8px;
  animation: splash-fade-in 700ms 280ms ease-out both;
}
.splash__loader span {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent);
  opacity: 0.45;
  animation: splash-dot 1.1s ease-in-out infinite;
}
.splash__loader span:nth-child(2) { animation-delay: 0.18s; }
.splash__loader span:nth-child(3) { animation-delay: 0.36s; }
.splash__loader.is-hidden { opacity: 0; pointer-events: none; transition: opacity 240ms; }

.splash__cta {
  animation: splash-fade-in 320ms ease-out both;
  margin-top: -4px;
}
.splash__tagline {
  font-family: "Cormorant Garamond", "Times New Roman", serif;
  font-style: italic;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.34em;
  color: var(--text-muted);
  margin: 0;
  animation: splash-fade-in 700ms 460ms ease-out both;
}

@keyframes splash-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes splash-dot {
  0%, 80%, 100% { opacity: 0.32; transform: scale(0.85); }
  40%            { opacity: 1;    transform: scale(1.15); }
}

/* ============================================================
   Hero
   ============================================================ */

.hero {
  position: relative;
  padding: 110px 0 80px;
}

.hero .shell { display: grid; gap: 32px; }

.hero-title {
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 1.05;
  margin-bottom: 0.2em;
  max-width: 18ch;
}
.hero-title__accent {
  font-style: italic;
  color: var(--accent);
}

.hero-title--brand {
  margin: 0;
  max-width: none;
  line-height: 0;
}
.hero-brand-img {
  display: block;
  width: 100%;
  max-width: 720px;
  height: auto;
  margin: 0 auto 0 0;
}

.hero-subtitle {
  font-size: 1.08rem;
  color: var(--text-muted);
  max-width: 60ch;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin-top: 28px;
  max-width: 720px;
}
.hero-meta__cell {
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card);
}
.hero-meta__num {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.8rem; color: var(--text);
}
.hero-meta__label {
  font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-muted);
}

/* ============================================================
   Cards / Surfaces
   ============================================================ */

.card {
  position: relative;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  -webkit-backdrop-filter: blur(20px) saturate(1.18);
  backdrop-filter: blur(20px) saturate(1.18);
}
.card--solid { background: var(--surface-strong); }
.card--tight { padding: 18px; border-radius: var(--radius-md); }

.grid {
  display: grid;
  gap: 24px;
}

.grid-2  { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3  { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid-4  { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* ============================================================
   Stage strip — visual map of all 10 stages
   ============================================================ */

.stage-strip {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 8px;
  margin: 24px 0 8px;
}
.stage-strip__cell {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 12px 4px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--line);
  position: relative;
  cursor: pointer;
  transition: transform 200ms, box-shadow 200ms;
}
.stage-strip__cell:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }
.stage-strip__cell::before {
  content: ""; position: absolute; top: 0; left: 12px; right: 12px; height: 3px;
  background: var(--c); border-radius: 0 0 4px 4px;
}
.stage-strip__week {
  font-size: 0.5rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c, var(--text-muted));
  font-weight: 600;
  margin-bottom: -2px;
  white-space: nowrap;
}
.stage-strip__num {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.9rem;
  color: var(--text);
  line-height: 1;
}
.stage-strip__name {
  font-size: 0.72rem; color: var(--text-muted);
  margin-top: 4px; text-align: center;
}
.stage-strip__range {
  font-size: 0.6rem; color: var(--text-faint); letter-spacing: 0.1em;
}

@media (max-width: 880px) {
  .stage-strip { grid-template-columns: repeat(5, 1fr); }
}

/* ============================================================
   Phase dropdown — compact stage selector
   ============================================================ */

.stage-strip { display: block; margin: 16px 0 24px; }

.phase-dd {
  position: relative;
  max-width: 720px;
}

.phase-dd__trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  width: 100%;
  padding: 14px 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow-card);
  font: inherit;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  transition: box-shadow 200ms, border-color 200ms, background 200ms;
}
.phase-dd__trigger > * { flex: 0 0 auto; }
.phase-dd__trigger .phase-dd__trig-progress { flex: 1 1 140px; min-width: 100px; }
.phase-dd__trigger .phase-dd__caret { margin-left: auto; }
.phase-dd__trigger:hover {
  box-shadow: var(--shadow-strong);
  border-color: var(--line-strong);
}
.phase-dd.is-open .phase-dd__trigger {
  border-color: color-mix(in srgb, var(--c, var(--accent)) 50%, var(--line));
  background: #fff;
}

.phase-dd__tag {
  font-size: 0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c, var(--accent));
  font-weight: 700;
  white-space: nowrap;
}
.phase-dd__trig-num {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.5rem;
  color: var(--c, var(--text));
  line-height: 1;
  min-width: 22px;
  font-weight: 500;
}
.phase-dd__trig-name {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.3rem;
  color: var(--text);
  letter-spacing: 0.01em;
}
.phase-dd__trig-meta {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
}
.phase-dd__trig-progress {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 130px;
}
.phase-dd__trig-bar {
  flex: 1;
  height: 6px;
  background: rgba(23,50,77,0.08);
  border-radius: 999px;
  overflow: hidden;
}
.phase-dd__trig-fill {
  height: 100%;
  background: var(--c, var(--accent));
  border-radius: inherit;
  transition: width 400ms ease;
}
.phase-dd__trig-count {
  font-family: "Cormorant Garamond", serif;
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 500;
  letter-spacing: 0.02em;
}
.phase-dd__caret {
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: transform 200ms;
}
.phase-dd.is-open .phase-dd__caret {
  transform: rotate(180deg);
}

.phase-dd__menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0; right: 0;
  z-index: 60;
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  box-shadow: 0 28px 60px rgba(21, 47, 76, 0.22), 0 6px 16px rgba(21, 47, 76, 0.08);
  padding: 6px;
  display: none;
  max-height: 460px;
  overflow-y: auto;
}
.phase-dd.is-open .phase-dd__menu {
  display: block;
  animation: phase-dd-in 200ms ease;
}
@keyframes phase-dd-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.phase-dd__item {
  display: grid;
  grid-template-columns: 40px 1fr 80px auto;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 10px 14px;
  background: transparent;
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  font: inherit;
  text-align: left;
  color: var(--text);
  transition: background 160ms;
}
.phase-dd__item:hover {
  background: color-mix(in srgb, var(--c, var(--accent)) 8%, transparent);
}
.phase-dd__item.is-current {
  background: color-mix(in srgb, var(--c, var(--accent)) 12%, transparent);
}
.phase-dd__num {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.4rem;
  color: #fff;
  background: var(--c, var(--accent));
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 10px;
  line-height: 1;
  box-shadow: 0 4px 10px color-mix(in srgb, var(--c, var(--accent)) 38%, transparent);
}
.phase-dd__main { min-width: 0; }
.phase-dd__name {
  font-weight: 600;
  color: var(--text);
  font-size: 0.95rem;
}
.phase-dd__sub {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  margin-top: 2px;
}
.phase-dd__bar {
  height: 6px;
  background: rgba(23,50,77,0.08);
  border-radius: 999px;
  overflow: hidden;
}
.phase-dd__bar-fill {
  height: 100%;
  background: var(--c, var(--accent));
  border-radius: inherit;
  transition: width 400ms ease;
}
.phase-dd__count {
  font-family: "Cormorant Garamond", serif;
  font-size: 1rem;
  color: var(--text);
  font-weight: 500;
  letter-spacing: 0.02em;
  min-width: 38px;
  text-align: right;
}

@media (max-width: 720px) {
  .phase-dd__trigger {
    gap: 10px;
    padding: 12px 18px;
    border-radius: 18px;
  }
  .phase-dd__trig-meta { display: none; }
  .phase-dd__trig-progress { flex-basis: 90px; }
  .phase-dd__item {
    grid-template-columns: 36px 1fr auto;
    gap: 10px;
  }
  .phase-dd__bar { display: none; }
}

/* ============================================================
   Lesson grid — every day as a tile
   ============================================================ */

.stage-block { margin: 36px 0; }
.stage-block__head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.stage-block__head h2 {
  display: inline-flex; align-items: center; gap: 12px;
}
.stage-block__num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 14px;
  background: var(--c, var(--accent));
  color: #fff; font-family: "Cormorant Garamond", serif; font-size: 1.3rem;
  box-shadow: 0 8px 18px color-mix(in srgb, var(--c, var(--accent)) 38%, transparent);
}

.lesson-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px;
}

.lesson-tile {
  position: relative;
  display: flex; flex-direction: column;
  padding: 16px 16px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  text-align: left;
  cursor: pointer;
  font: inherit; color: inherit;
  transition: transform 180ms, box-shadow 200ms, border-color 200ms;
}
.lesson-tile:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
  border-color: color-mix(in srgb, var(--c, var(--accent)) 36%, var(--line));
}
.lesson-tile::before {
  content: ""; position: absolute; left: 14px; top: 0;
  width: 28px; height: 3px;
  background: var(--c, var(--accent));
  border-radius: 0 0 3px 3px;
}

.lesson-tile__head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px;
  gap: 8px;
}
.lesson-tile__id {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.1rem; color: var(--text);
  letter-spacing: 0.04em;
}

/* Per-tile "done" badge — passive indicator only. The actual 打卡 action lives
   in the modal's top-right (.modal__checkin), since users need to read the
   lesson before they can check in. */
.lesson-tile__stamp.is-done {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--ok), #1f8455);
  color: #fff;
  font-size: 0.86rem;
  font-weight: 700;
  box-shadow: 0 4px 10px rgba(47,155,106,0.32);
  flex: 0 0 auto;
  pointer-events: none;
}
.lesson-tile__milestone {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px;
  font-size: 1rem;
  color: var(--accent);
  flex: 0 0 auto;
  pointer-events: none;
}
@keyframes stamp-pulse {
  0%, 100% { box-shadow: 0 6px 16px rgba(183,140,53,0.42); }
  50%      { box-shadow: 0 6px 20px rgba(183,140,53,0.62), 0 0 0 6px rgba(183,140,53,0.08); }
}
.lesson-tile.is-today { box-shadow: 0 0 0 2px var(--accent), var(--shadow-card); }
.lesson-tile.is-milestone .lesson-tile__id::after {
  content: " ★"; color: var(--accent); font-style: italic;
}

.lesson-tile__title {
  font-size: 0.96rem; color: var(--text);
  font-weight: 500;
  margin-bottom: 6px;
  line-height: 1.35;
  flex-grow: 1;
}
.lesson-tile__deliv {
  font-size: 0.75rem; color: var(--text-muted);
  border-top: 1px dashed var(--line);
  padding-top: 8px;
  margin-top: 4px;
}

/* ============================================================
   Curriculum — phase picker (small cards) + selected-phase detail
   ============================================================ */

.phase-picker {
  margin-top: 24px;
  display: grid;
  gap: 28px;
  position: relative;
}

/* Strip wrapper hosts the horizontal cards + the right-edge hint overlay.
   Bleeds to viewport edges so the hint can sit at the right of the screen. */
.phase-picker__strip {
  position: relative;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}
.phase-picker__hint {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 72px;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 8px;
  background: linear-gradient(to left, var(--surface) 30%, color-mix(in srgb, var(--surface) 70%, transparent) 70%, transparent);
  opacity: 1;
  transition: opacity 220ms ease;
}
.phase-picker__hint-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  box-shadow: 0 4px 12px rgba(30,35,42,0.10);
  color: var(--text);
  font-size: 1.1rem;
  line-height: 1;
  animation: phase-hint-nudge 1.6s ease-in-out infinite;
}
@keyframes phase-hint-nudge {
  0%, 100% { transform: translateX(0); }
  50%      { transform: translateX(4px); }
}
.phase-picker__strip.is-at-end .phase-picker__hint { opacity: 0; }

.phase-picker__cards {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  overflow-y: visible;
  scroll-snap-type: x proximity;
  scroll-padding-inline: max(24px, calc((100vw - var(--max-width)) / 2));
  -webkit-overflow-scrolling: touch;
  /* Strip wrapper is 100vw wide; pad cards inwards so the first card
     lines up with the .shell content's left edge. */
  padding-block: 6px 14px;
  padding-inline: max(24px, calc((100vw - var(--max-width)) / 2));
  scrollbar-width: none;
}
.phase-picker__cards::-webkit-scrollbar { display: none; }

.phase-pick {
  position: relative;
  flex: 0 0 200px;
  scroll-snap-align: start;
  text-align: left;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 14px 14px;
  cursor: pointer;
  display: flex; flex-direction: column; gap: 8px;
  transition: border-color 180ms, box-shadow 180ms, transform 180ms, background 180ms;
  font: inherit;
  color: inherit;
}
.phase-pick:hover {
  border-color: color-mix(in srgb, var(--c) 35%, var(--line));
  transform: translateY(-1px);
}
.phase-pick.is-current {
  border-color: color-mix(in srgb, var(--c) 45%, var(--line));
}
.phase-pick.is-selected {
  border-color: var(--c);
  background: color-mix(in srgb, var(--c) 6%, var(--surface-strong));
  box-shadow: 0 8px 22px color-mix(in srgb, var(--c) 22%, transparent);
  transform: translateY(-1px);
}

.phase-pick__top {
  display: flex; align-items: center; gap: 8px;
  justify-content: space-between;
}
.phase-pick__num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--c), color-mix(in srgb, var(--c) 60%, #fff));
  color: #fff;
  font-family: "Cormorant Garamond", serif;
  font-weight: 600;
  font-size: 0.92rem;
  box-shadow: 0 3px 8px color-mix(in srgb, var(--c) 32%, transparent);
}
.phase-pick__badge {
  display: inline-flex; align-items: center; justify-content: center;
  margin-right: auto;
  margin-left: 4px;
  height: 20px; padding: 0 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--c) 18%, transparent);
  color: color-mix(in srgb, var(--c) 70%, var(--text));
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}
.phase-pick__count {
  font-family: "Cormorant Garamond", serif;
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}
.phase-pick.is-selected .phase-pick__count { color: var(--text); }

.phase-pick__name {
  font-size: 0.96rem;
  color: var(--text);
  font-weight: 600;
  line-height: 1.3;
}

.phase-pick__bar {
  height: 5px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--c) 12%, var(--line));
  overflow: hidden;
}
.phase-pick__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--c), color-mix(in srgb, var(--c) 70%, var(--accent-deep)));
  border-radius: inherit;
  transition: width 360ms ease;
}

.phase-pick__meta {
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Selected phase detail panel */
.phase-detail {
  background: var(--surface-strong);
  border: 1px solid color-mix(in srgb, var(--c, var(--accent)) 30%, var(--line));
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 22px;
}

.phase-detail__head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px dashed var(--line);
}
.phase-detail__num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--c), color-mix(in srgb, var(--c) 60%, #fff));
  color: #fff;
  font-family: "Cormorant Garamond", serif;
  font-weight: 600;
  font-size: 1.2rem;
  box-shadow: 0 4px 12px color-mix(in srgb, var(--c) 35%, transparent);
}
.phase-detail__title h3 { margin: 0 0 4px 0; font-size: 1.15rem; font-weight: 600; }
.phase-detail__sub {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.phase-detail__progress {
  min-width: 140px;
  display: flex; flex-direction: column;
  gap: 6px;
  align-items: flex-end;
}
.phase-detail__progress-num {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.4rem;
  color: var(--text);
  font-weight: 500;
  line-height: 1;
}
.phase-detail__progress-num small {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-left: 1px;
}
.phase-detail__progress-bar {
  width: 120px; height: 6px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--c) 14%, var(--line));
  overflow: hidden;
}
.phase-detail__progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--c), color-mix(in srgb, var(--c) 70%, var(--accent-deep)));
  border-radius: inherit;
  transition: width 400ms ease;
}

@media (max-width: 720px) {
  .phase-picker__cards { gap: 10px; }
  .phase-pick { flex: 0 0 170px; padding: 10px 12px 12px; }
  .phase-pick__num { width: 28px; height: 28px; font-size: 0.85rem; border-radius: 9px; }
  .phase-pick__name { font-size: 0.9rem; }
  .phase-detail { padding: 16px; }
  .phase-detail__head {
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    gap: 12px;
  }
  .phase-detail__progress { grid-column: 1 / -1; flex-direction: row; align-items: center; min-width: 0; }
  .phase-detail__progress-bar { flex: 1; width: auto; }
  .phase-detail__num { width: 40px; height: 40px; font-size: 1.05rem; }
  .phase-detail__title h3 { font-size: 1.02rem; }
}

/* ============================================================
   Dashboard panels
   ============================================================ */

.dash-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.progress-ring {
  --pct: 0;
  --size: 168px;
  width: var(--size); height: var(--size);
  border-radius: 50%;
  background:
    conic-gradient(var(--accent) calc(var(--pct) * 1%), rgba(183,140,53,0.12) 0);
  display: inline-grid; place-items: center;
  position: relative;
}
.progress-ring::after {
  content: ""; position: absolute; inset: 12px;
  border-radius: 50%;
  background: var(--surface-strong);
  box-shadow: inset 0 0 0 1px var(--line);
}
.progress-ring__inner {
  position: relative; z-index: 1;
  text-align: center;
}
.progress-ring__num {
  font-family: "Cormorant Garamond", serif;
  font-size: 2.6rem; color: var(--text); line-height: 1;
}
.progress-ring__sub {
  font-size: 0.65rem; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--text-muted); margin-top: 4px;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 12px;
  margin-top: 18px;
}
.stat-cell {
  padding: 12px 14px;
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.stat-cell .v { font-family: "Cormorant Garamond", serif; font-size: 1.5rem; color: var(--text); }
.stat-cell .l { font-size: 0.65rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-muted); }

/* Profile meta — registration time / efficiency rows */
.profile-meta { display: flex; flex-direction: column; gap: 8px; }
.profile-meta__row {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.profile-meta__lbl {
  font-size: 0.65rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-muted); flex-shrink: 0;
}
.profile-meta__val {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.05rem; color: var(--text);
  text-align: right;
}

/* Today card — single clickable card with day badge + title + deliverable */
.today-card-wrap { /* layout-only wrapper */ }
.today-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 22px;
  align-items: center;
  padding: 22px 26px;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: border-color 200ms, box-shadow 200ms, transform 200ms;
  text-align: left;
}
.today-card:hover {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
  box-shadow: 0 14px 32px color-mix(in srgb, var(--accent) 16%, rgba(30,35,42,0.08));
  transform: translateY(-1px);
}
.today-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.today-card.is-milestone {
  border-color: color-mix(in srgb, #c89436 50%, var(--line));
}
.today-card .day-badge {
  width: 80px; height: 80px;
  border-radius: 22px;
  background: linear-gradient(135deg, var(--text), #1f4264);
  color: #fff;
  display: grid; place-items: center;
  text-align: center;
  box-shadow: 0 14px 28px rgba(23,50,77,0.28);
}
.today-card .day-badge .d { font-family: "Cormorant Garamond", serif; font-size: 1.9rem; line-height: 1; }
.today-card .day-badge .l { font-size: 0.55rem; letter-spacing: 0.2em; opacity: 0.7; margin-top: 4px; }
.today-card__body { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.today-card__title {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
}
.today-card__star { color: #c89436; font-size: 1rem; }
.today-card__deliv {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}
.today-card__done {
  align-self: flex-start;
  margin-top: 6px;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  color: #2f8c5b;
  background: color-mix(in srgb, #2f8c5b 14%, transparent);
  padding: 4px 10px;
  border-radius: 999px;
}

/* ============================================================
   Avatars
   ============================================================ */

.avatar {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f3e4c2, #e0c478);
  color: var(--text); font-size: 1.15rem;
  flex: 0 0 auto;
  overflow: hidden;
  position: relative;
  background-size: cover;
  background-position: center;
}
.avatar--lg { width: 64px; height: 64px; font-size: 1.9rem; flex-basis: 64px; }
.avatar--xl { width: 96px; height: 96px; font-size: 2.6rem; flex-basis: 96px; }
.avatar--nav { width: 24px; height: 24px; font-size: 0.7rem; line-height: 1; letter-spacing: 0; }
.avatar img {
  width: 100%; height: 100%; object-fit: cover; border-radius: 50%;
}
.avatar.has-image { background: none; }

/* ============================================================
   Avatar uploader (profile form)
   ============================================================ */
.avatar-uploader {
  display: flex; align-items: center; gap: 16px;
  padding: 14px;
  background: rgba(255,255,255,0.6);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-sm);
}
.avatar-uploader__controls {
  display: flex; flex-direction: column; gap: 6px;
  flex: 1; min-width: 0;
}
.avatar-uploader label.btn { cursor: pointer; }

/* ============================================================
   Community feed
   ============================================================ */

.feed-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  transition: box-shadow 200ms;
}
.feed-item:hover { box-shadow: var(--shadow-card); }
.feed-item__name { font-weight: 600; color: var(--text); }
.feed-item__meta { font-size: 0.72rem; color: var(--text-muted); }
.feed-item__body { margin: 6px 0 0; color: var(--text-soft); }

.feed-reactions {
  display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap;
}
.feed-reactions button {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 10px;
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.78rem;
  cursor: pointer;
  transition: transform 120ms, background 180ms;
}
.feed-reactions button:hover { transform: scale(1.08); background: #fff; }
.feed-reactions button.is-active { background: color-mix(in srgb, var(--accent) 16%, white); border-color: var(--accent-soft); }

/* ============================================================
   Leaderboard — dashboard sidebar (compact)
   ============================================================ */

.lb-row {
  display: grid;
  grid-template-columns: 36px auto 1fr auto;
  gap: 14px; align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
}
.lb-row:last-child { border-bottom: 0; }
.lb-row .rank {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.4rem; color: var(--text-muted);
  text-align: center;
}
.lb-row .rank.top1 { color: var(--accent); }
.lb-row .name { color: var(--text); font-weight: 600; }
.lb-row .tag { font-size: 0.72rem; color: var(--text-muted); }
.lb-row .days {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.3rem; color: var(--text);
}

/* ============================================================
   Full Leaderboard — Community page
   ============================================================ */

.lb-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
}
.lb-summary__cell {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}
.lb-summary__cell .v {
  font-family: "Cormorant Garamond", serif;
  font-size: 2rem; color: var(--text); line-height: 1;
}
.lb-summary__cell .l {
  font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-muted); margin-top: 4px;
}

.lb-head, .lb-row-full {
  display: grid;
  grid-template-columns: 64px minmax(180px, 1.6fr) 1.4fr 80px 80px;
  gap: 16px;
  align-items: center;
  padding: 14px 22px;
}
.lb-head {
  background: linear-gradient(135deg, rgba(23,50,77,0.04), rgba(183,140,53,0.04));
  border-bottom: 1px solid var(--line);
  font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-muted);
}
.lb-head__progress { padding-left: 50px; }

.lb-row-full {
  border-bottom: 1px solid var(--line);
  transition: background 180ms, transform 200ms;
}
.lb-row-full:last-child { border-bottom: 0; }
.lb-row-full:hover { background: rgba(183,140,53,0.05); }
.lb-row-full.is-me {
  background: linear-gradient(135deg, rgba(183,140,53,0.10), rgba(183,140,53,0.04));
  border-left: 3px solid var(--accent);
  padding-left: 19px;
}

.lb-rank {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--line);
  font-family: "Cormorant Garamond", serif;
  font-size: 1.4rem; color: var(--text-muted);
}
.lb-rank.rank-1 { background: linear-gradient(135deg, #f8e0a3, #e0b04a); color: #6b4d11; border-color: #e0b04a; box-shadow: 0 6px 14px rgba(183,140,53,0.32); }
.lb-rank.rank-2 { background: linear-gradient(135deg, #e9edf2, #c0c8d4); color: #3a4a5e; border-color: #c0c8d4; }
.lb-rank.rank-3 { background: linear-gradient(135deg, #f0d2a8, #cf9a64); color: #5a3a17; border-color: #cf9a64; }

.lb-user {
  display: flex; align-items: center; gap: 12px;
  min-width: 0;
}
.lb-user__name {
  font-weight: 600; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.lb-user__tag {
  font-size: 0.74rem; color: var(--text-muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.lb-progress {
  display: flex; align-items: center; gap: 12px;
}
.lb-progress__bar {
  flex: 1; height: 10px;
  background: rgba(23,50,77,0.07);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}
.lb-progress__fill {
  position: absolute; left: 0; top: 0; bottom: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-soft));
  border-radius: 999px;
  transition: width 600ms ease;
}
.lb-progress__num {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.05rem; color: var(--text);
  min-width: 48px; text-align: right;
}

.lb-streak {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.2rem; color: var(--text);
  text-align: center;
}
.lb-streak.is-hot { color: var(--accent); }

.lb-days {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.3rem; color: var(--text);
  text-align: center;
}

@media (max-width: 840px) {
  .lb-head, .lb-row-full { grid-template-columns: 44px 1fr 2fr 60px; gap: 10px; padding: 12px; }
  .lb-head > div:nth-child(5), .lb-row-full > div:nth-child(5) { display: none; }
  .lb-head__progress { padding-left: 0; }
  .lb-user__tag { display: none; }
}

/* ============================================================
   Modal
   ============================================================ */

.modal-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(15, 28, 44, 0.45);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  display: none;
  align-items: flex-start; justify-content: center;
  padding: 5vh 16px;
  overflow-y: auto;
}
.modal-overlay.is-open { display: flex; animation: fadeIn 220ms ease; }
@keyframes fadeIn { from { opacity: 0 } to { opacity: 1 } }

.modal {
  width: min(880px, 100%);
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-strong);
  padding: 32px;
  position: relative;
  animation: slideUp 280ms ease;
}
@keyframes slideUp { from { transform: translateY(20px); opacity: 0 } to { transform: translateY(0); opacity: 1 } }

.modal__topbar {
  position: absolute; top: 14px; right: 14px;
  display: flex; align-items: center; gap: 10px;
  z-index: 2;
}
.modal__close {
  width: 36px; height: 36px;
  border-radius: 50%; border: 1px solid var(--line);
  background: rgba(255,255,255,0.7);
  color: var(--text); font-size: 1.1rem;
  cursor: pointer; display: grid; place-items: center;
  flex: 0 0 auto;
}
.modal__close:hover { background: #fff; }

/* Top-right "打卡" action button (moved off the tile per design) */
.modal__checkin {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0 16px; height: 36px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #fff;
  font: inherit; font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: transform 140ms, box-shadow 200ms, background 200ms, opacity 200ms;
  box-shadow: 0 6px 16px rgba(183,140,53,0.42);
  white-space: nowrap;
  animation: stamp-pulse 2.4s ease-in-out infinite;
}
.modal__checkin:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(183,140,53,0.5);
}
.modal__checkin.is-done {
  background: linear-gradient(135deg, var(--ok), #1f8455);
  box-shadow: 0 4px 10px rgba(47,155,106,0.32);
  animation: none;
}
.modal__checkin.is-done:hover {
  background: linear-gradient(135deg, #b94545, #8a3030);
  box-shadow: 0 4px 12px rgba(170, 60, 60, 0.32);
}
.modal__checkin.is-done:hover::after {
  content: '· 撤销';
  margin-left: 4px;
  opacity: 0.85;
}

@media (max-width: 480px) {
  .modal__topbar { top: 10px; right: 10px; gap: 6px; }
  .modal__checkin { padding: 0 12px; height: 32px; font-size: 0.72rem; }
  .modal__close { width: 32px; height: 32px; }
  /* Add room so modal content doesn't get hidden behind the topbar */
  #lesson-modal-body { padding-top: 26px; }
}

.modal h2 { margin-top: 0; }

/* ============================================================
   Instructions modal — special styling for content
   ============================================================ */

.instr__meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.instr__chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  background: color-mix(in srgb, var(--chip, var(--accent)) 14%, white);
  color: color-mix(in srgb, var(--chip, var(--text)) 60%, var(--text));
  border: 1px solid color-mix(in srgb, var(--chip, var(--accent)) 30%, transparent);
  border-radius: 999px;
  font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
}
.instr__chip--ghost {
  --chip: #b0b8c1;
}

.instr__title { font-size: 1.7rem; margin: 6px 0 8px; }
.instr__lead {
  color: var(--text-soft);
  font-size: 1rem;
  padding: 14px 16px;
  background: rgba(183,140,53,0.06);
  border-left: 3px solid var(--accent);
  border-radius: 4px 14px 14px 4px;
}

.instr__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin: 18px 0;
}
.instr__card {
  padding: 14px;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.instr__card h4 { margin: 0 0 8px; font-size: 0.95rem; }
.instr__card ol, .instr__card ul { margin: 0; padding-left: 18px; font-size: 0.88rem; color: var(--text-soft); }
.instr__card li { margin: 4px 0; }

.instr__details {
  padding: 12px 16px;
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  margin: 10px 0;
}
.instr__details summary {
  cursor: pointer;
  font-weight: 600; color: var(--text);
  list-style: none;
}
.instr__details summary::-webkit-details-marker { display: none; }
.instr__details ol, .instr__details ul { padding-left: 22px; }
.instr__details li { margin: 6px 0; }

/* ── Rich instruction sections (D1-D10 detailed content) ── */
.instr__lead-tag {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 8px;
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent-deep);
  background: rgba(183,140,53,0.16);
  border-radius: 4px;
  vertical-align: 2px;
}
.instr__deliv-banner {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 18px;
  margin: 18px 0;
  background: linear-gradient(135deg, rgba(47,155,106,0.10), rgba(47,155,106,0.04));
  border: 1px solid rgba(47,155,106,0.22);
  border-radius: 14px;
}
.instr__deliv-icon { font-size: 1.8rem; }
.instr__deliv-label {
  font-size: 0.66rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ok); font-weight: 600; margin-bottom: 2px;
}
.instr__sec {
  padding: 16px 18px;
  background: rgba(255,255,255,0.65);
  border: 1px solid var(--line);
  border-radius: 14px;
  margin: 12px 0;
}
.instr__sec h4 {
  display: flex; align-items: center; gap: 8px;
  margin: 0 0 10px;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}
.instr__sec-icon { font-size: 1.15rem; }
.instr__tools { list-style: none; padding: 0; margin: 0; }
.instr__tools li {
  padding: 10px 0; border-top: 1px dashed var(--line);
}
.instr__tools li:first-child { border-top: 0; padding-top: 0; }
.instr__tool-link {
  margin-left: 8px; padding: 1px 8px;
  background: rgba(183,140,53,0.14);
  border-radius: 999px;
  font-size: 0.74rem; color: var(--accent-deep);
  text-decoration: none; font-weight: 600;
}
.instr__tool-note {
  font-size: 0.84rem; color: var(--text-muted);
  margin-top: 3px;
}
.instr__steps { list-style: none; counter-reset: stp; padding: 0; margin: 0; }
.instr__steps li {
  position: relative;
  padding: 10px 0 10px 38px;
  border-top: 1px dashed var(--line);
  counter-increment: stp;
}
.instr__steps li:first-child { border-top: 0; }
.instr__steps li::before {
  content: counter(stp);
  position: absolute; left: 0; top: 12px;
  width: 26px; height: 26px;
  display: grid; place-items: center;
  background: var(--text); color: white;
  font-family: "Cormorant Garamond", serif;
  font-size: 0.95rem;
  border-radius: 50%;
}
.instr__step-do { color: var(--text); line-height: 1.5; }
.instr__step-tip {
  margin-top: 4px;
  padding: 6px 10px;
  background: rgba(183,140,53,0.10);
  border-left: 2px solid var(--accent);
  border-radius: 4px;
  font-size: 0.84rem;
  color: var(--text-soft);
}
.instr__keys, .instr__checks {
  list-style: none; padding: 0; margin: 0;
}
.instr__keys li, .instr__checks li {
  position: relative;
  padding: 6px 0 6px 26px;
  color: var(--text-soft);
  line-height: 1.5;
}
.instr__keys li::before {
  content: "◆"; position: absolute; left: 4px; top: 6px;
  color: var(--accent); font-size: 0.7rem;
}
.instr__checks li::before {
  content: "☐"; position: absolute; left: 0; top: 4px;
  color: var(--ok); font-size: 1rem;
}
.instr__pits { list-style: none; padding: 0; margin: 0; }
.instr__pits li {
  padding: 8px 0;
  border-top: 1px dashed var(--line);
}
.instr__pits li:first-child { border-top: 0; }
.instr__pit-trap {
  color: var(--danger);
  font-size: 0.9rem;
  font-weight: 600;
}
.instr__pit-fix {
  color: var(--ok);
  font-size: 0.88rem;
  margin-top: 2px;
  padding-left: 14px;
}
.instr__visual { background: linear-gradient(135deg, rgba(54,112,178,0.04), rgba(255,255,255,0.65)); }
.instr__vis-body { font-size: 0.88rem; }

/* ── Visual mock content styles (used inside DATA[].visual.body) ── */
.vis-code {
  margin: 0; padding: 14px 16px;
  background: #1b2735;
  color: #d4e1f0;
  border-radius: 10px;
  font-family: "SF Mono", "Menlo", "Cascadia Code", monospace;
  font-size: 0.78rem;
  line-height: 1.55;
  overflow-x: auto;
  white-space: pre;
}
.vis-tree {
  margin: 0; padding: 14px 16px;
  background: rgba(23,50,77,0.04);
  border: 1px solid var(--line);
  border-radius: 10px;
  font-family: "SF Mono", "Menlo", monospace;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--text);
  white-space: pre;
  overflow-x: auto;
}
.vis-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}
.vis-table th, .vis-table td {
  padding: 8px 12px;
  border: 1px solid var(--line);
  text-align: left;
}
.vis-table th {
  background: rgba(23,50,77,0.06);
  font-weight: 600; color: var(--text);
  text-align: center;
}
.vis-table .vis-row-total td {
  background: rgba(183,140,53,0.08);
  color: var(--text);
}
.vis-stack { display: flex; flex-direction: column; gap: 6px; }
.vis-step {
  padding: 8px 14px;
  background: rgba(255,255,255,0.8);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  font-size: 0.86rem;
  color: var(--text);
}
.vis-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.vis-box {
  padding: 12px;
  background: rgba(255,255,255,0.82);
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 0.84rem;
  color: var(--text-soft);
}
.vis-box__title {
  font-weight: 600; color: var(--text);
  margin-bottom: 4px;
  font-size: 0.92rem;
}
.vis-box code {
  background: rgba(23,50,77,0.08);
  padding: 1px 6px; border-radius: 4px;
  font-size: 0.78rem;
}

/* ── Prev / Next lesson navigation (footer of lesson modal) ── */
.lesson-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.lesson-nav__btn {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 18px;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--line);
  border-radius: 16px;
  font: inherit; color: var(--text);
  cursor: pointer;
  text-align: left;
  transition: transform 180ms, box-shadow 200ms, background 200ms, border-color 200ms;
  min-width: 0;
}
.lesson-nav__btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(23,50,77,0.12);
  background: #fff;
  border-color: var(--accent-soft);
}
.lesson-nav__btn:disabled {
  opacity: 0.42;
  cursor: not-allowed;
}
.lesson-nav__btn--next {
  text-align: right;
  background: linear-gradient(135deg, var(--text), #1f4264);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 10px 24px rgba(23,50,77,0.24);
}
.lesson-nav__btn--next:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  box-shadow: 0 14px 30px rgba(183,140,53,0.36);
  color: #fff;
}
.lesson-nav__btn--next .lesson-nav__label { color: rgba(255,255,255,0.75); }
.lesson-nav__btn--next .lesson-nav__title { color: #fff; }
.lesson-nav__arrow {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.6rem;
  line-height: 1;
  flex: 0 0 auto;
}
.lesson-nav__text {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column; gap: 2px;
}
.lesson-nav__label {
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--text-muted);
}
.lesson-nav__title {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.lesson-nav__btn--next { flex-direction: row-reverse; }
.lesson-nav__btn--next .lesson-nav__text { text-align: right; }

@media (max-width: 640px) {
  .lesson-nav { grid-template-columns: 1fr; }
}

/* ============================================================
   Forms
   ============================================================ */

.form-row {
  display: grid; gap: 6px;
  margin-bottom: 14px;
}
.form-row-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.form-row-pair > .form-row { margin-bottom: 14px; }
@media (max-width: 560px) {
  .form-row-pair { grid-template-columns: 1fr; gap: 0; }
}
label.lbl {
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--text-muted);
}
.input, textarea, select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.85);
  font: inherit; color: var(--text);
  transition: border 180ms, box-shadow 180ms;
}
.input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(183,140,53,0.15);
}
textarea { min-height: 96px; resize: vertical; }

.error { color: var(--danger); font-size: 0.85rem; margin-top: 4px; }
.success { color: var(--ok); font-size: 0.85rem; margin-top: 4px; }
.form-error { color: var(--danger); font-size: 0.85rem; margin-top: 4px; display: inline-block; }

/* ============================================================
   Tabs (within lesson modal)
   ============================================================ */

.tabs {
  display: flex; gap: 4px;
  padding: 4px;
  background: rgba(255,255,255,0.6);
  border-radius: 999px;
  border: 1px solid var(--line);
  margin: 18px 0;
  width: fit-content;
}
.tab-btn {
  padding: 8px 18px;
  border: 0; background: transparent;
  border-radius: 999px;
  font: inherit; font-size: 0.78rem;
  font-weight: 600; letter-spacing: 0.08em;
  color: var(--text-muted);
  cursor: pointer;
  transition: background 180ms, color 180ms;
}
.tab-btn.is-active {
  background: var(--text);
  color: #fff;
}
.tab-panel { display: none; }
.tab-panel.is-active { display: block; animation: fadeIn 200ms; }

/* Profile page tab panels — hidden via [hidden] attribute, animate when shown. */
.profile-panel.is-active { animation: fadeIn 200ms; }

/* ============================================================
   Header check-in button (top-right, prominent)
   ============================================================ */

.header-checkin {
  position: fixed;
  top: 14px; right: 22px;
  z-index: 50;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 20px;
  min-height: 44px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #fff;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 14px 32px rgba(183, 140, 53, 0.48);
  transition: transform 200ms, box-shadow 200ms;
}
.header-checkin:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(183, 140, 53, 0.55); }
.header-checkin:active { transform: translateY(0); }
.header-checkin.is-done {
  background: linear-gradient(135deg, var(--ok), #1f8455);
  box-shadow: 0 10px 26px rgba(47, 155, 106, 0.32);
}
.header-checkin.is-done .header-checkin__pulse { display: none; }

.header-checkin__pulse {
  position: absolute; inset: -4px;
  border-radius: 999px;
  border: 2px solid var(--accent);
  opacity: 0;
  animation: checkin-pulse 2.4s ease-out infinite;
}
@keyframes checkin-pulse {
  0%   { transform: scale(0.92); opacity: 0.6; }
  70%  { transform: scale(1.18); opacity: 0; }
  100% { transform: scale(1.18); opacity: 0; }
}

.header-checkin__text {
  display: flex; flex-direction: column;
  align-items: flex-start; line-height: 1.05;
}
.header-checkin__label {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.85;
}
.header-checkin__day {
  font-family: "Cormorant Garamond", serif;
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* ============================================================
   Confetti
   ============================================================ */

.confetti-stage {
  position: fixed; inset: 0; z-index: 250;
  pointer-events: none; overflow: hidden;
}
.confetti-piece {
  position: absolute; top: -20px;
  width: 9px; height: 16px;
  animation: confetti-fall linear forwards;
  will-change: transform, opacity;
  border-radius: 1px;
}
.confetti-piece.cp-circle { width: 10px; height: 10px; border-radius: 50%; }
.confetti-piece.cp-strip  { width: 5px;  height: 22px; }
@keyframes confetti-fall {
  0%   { transform: translate3d(0, -20px, 0) rotate(0deg);   opacity: 1; }
  70%  { opacity: 1; }
  100% { transform: translate3d(var(--dx, 0), 110vh, 0) rotate(var(--rot, 720deg)); opacity: 0.2; }
}

/* ============================================================
   Stamp overlay
   ============================================================ */

.stamp-overlay {
  position: fixed; inset: 0; z-index: 260;
  display: grid; place-items: center;
  background: rgba(11, 30, 48, 0.55);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 300ms ease;
  cursor: pointer;
}
.stamp-overlay.is-visible { opacity: 1; }
.stamp-overlay__inner {
  text-align: center;
}
.stamp-overlay__caption {
  margin-top: 28px;
  color: rgba(255,255,255,0.92);
  font-size: 1.1rem;
  letter-spacing: 0.16em;
  opacity: 0;
  transition: opacity 400ms 350ms ease;
}
.stamp-overlay.is-visible .stamp-overlay__caption { opacity: 1; }
.stamp-overlay__hint {
  margin-top: 8px;
  color: rgba(255,255,255,0.6);
  font-size: 0.78rem;
  letter-spacing: 0.18em; text-transform: uppercase;
}

.stamp {
  position: relative;
  display: inline-block;
  transform: scale(0) rotate(var(--rot, -8deg));
  transition: transform 700ms cubic-bezier(0.34, 1.56, 0.64, 1);
  filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.45));
}
.stamp-overlay.is-visible .stamp {
  transform: scale(1) rotate(var(--rot, -8deg));
}

/* Common ink wash to make stamps look pressed */
.stamp::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.06) 0 30%, transparent 70%),
    radial-gradient(circle at 70% 80%, rgba(0,0,0,0.04) 0 40%, transparent 80%);
  mix-blend-mode: overlay;
  pointer-events: none;
  border-radius: inherit;
}

/* ─── Variant 1: round postmark (red) ─── */
.stamp--postmark {
  --ink: #b53636;
  width: 280px; height: 280px;
  border-radius: 50%;
  border: 4px double var(--ink);
  background: rgba(252, 240, 222, 0.95);
  color: var(--ink);
  display: grid; place-items: center;
  font-family: "Space Grotesk", sans-serif;
}
.stamp--postmark::before {
  content: ""; position: absolute; inset: 14px;
  border-radius: 50%;
  border: 2px dashed var(--ink);
  opacity: 0.55;
}
.stamp--postmark .stamp__inner {
  display: grid; place-items: center;
  text-align: center; z-index: 1;
}
.stamp--postmark .stamp__day {
  font-family: "Cormorant Garamond", serif;
  font-size: 4.4rem; font-weight: 600;
  line-height: 1; letter-spacing: 0.02em;
}
.stamp--postmark .stamp__label {
  font-size: 0.72rem; letter-spacing: 0.36em;
  text-transform: uppercase; margin-top: 4px;
}
.stamp--postmark .stamp__date {
  margin-top: 16px;
  padding: 4px 16px;
  border: 1.5px solid var(--ink);
  border-radius: 6px;
  font-size: 0.86rem; letter-spacing: 0.16em;
  font-weight: 600;
}
.stamp--postmark .stamp__arc {
  position: absolute; inset: 22px;
  font-size: 0.66rem; letter-spacing: 0.28em;
  font-weight: 600;
}

/* ─── Variant 2: air mail diagonal stripes (blue/red) ─── */
.stamp--airmail {
  --a: #1e548a;
  --b: #b53636;
  width: 340px; padding: 24px 30px 22px;
  background: rgba(252, 245, 230, 0.96);
  color: var(--a);
  border-radius: 4px;
  text-align: center;
  font-family: "Space Grotesk", sans-serif;
  border: 3px solid var(--a);
  background-image:
    repeating-linear-gradient(45deg,
      var(--a) 0 10px, var(--a) 10px 20px,
      transparent 20px 30px,
      var(--b) 30px 40px, var(--b) 40px 50px,
      transparent 50px 60px);
  background-clip: padding-box;
  background-origin: padding-box;
  background-size: 80px 80px;
}
.stamp--airmail__panel {
  background: rgba(252, 245, 230, 0.96);
  padding: 18px 14px;
  border-radius: 2px;
  margin: 4px;
}
.stamp--airmail__title {
  font-size: 0.76rem; letter-spacing: 0.3em;
  text-transform: uppercase; font-weight: 700;
  color: var(--b);
}
.stamp--airmail__day {
  font-family: "Cormorant Garamond", serif;
  font-size: 3.6rem; line-height: 1;
  margin: 8px 0 4px;
  color: var(--a);
}
.stamp--airmail__date {
  font-size: 0.78rem; letter-spacing: 0.2em;
  font-weight: 600; color: var(--a);
}
.stamp--airmail__lesson {
  font-size: 0.74rem;
  color: var(--a); opacity: 0.7;
  margin-top: 8px;
}

/* ─── Variant 3: wax seal (gold/burgundy) ─── */
.stamp--wax {
  --ink: #fdf3da;
  width: 280px; height: 280px; border-radius: 50%;
  display: grid; place-items: center;
  background:
    radial-gradient(circle at 32% 28%, #f0d28a 0%, #c4862c 26%, #8a3f1c 80%);
  color: var(--ink);
  text-align: center;
  box-shadow:
    inset 0 -10px 30px rgba(0,0,0,0.32),
    inset 0 8px 18px rgba(255,255,255,0.16);
  font-family: "Space Grotesk", sans-serif;
}
.stamp--wax::before {
  content: ""; position: absolute; inset: 14px;
  border-radius: 50%;
  border: 2px dashed rgba(253, 243, 218, 0.6);
}
.stamp--wax .stamp__turtle {
  font-size: 3.2rem;
  line-height: 1; margin-bottom: 0;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.4));
}
.stamp--wax .stamp__day {
  font-family: "Cormorant Garamond", serif;
  font-size: 3.6rem; line-height: 1;
  margin-top: -8px;
  text-shadow: 0 2px 6px rgba(0,0,0,0.32);
}
.stamp--wax .stamp__label {
  font-size: 0.7rem; letter-spacing: 0.36em;
  text-transform: uppercase; font-weight: 600;
  margin-top: 6px;
}
.stamp--wax .stamp__date {
  font-size: 0.74rem; letter-spacing: 0.18em;
  margin-top: 4px; opacity: 0.86;
}

/* ─── Variant 4: APPROVED red ink stamp ─── */
.stamp--approved {
  --ink: #c1311b;
  padding: 16px 48px 18px;
  background: rgba(252, 240, 222, 0.95);
  border: 4px solid var(--ink);
  color: var(--ink);
  font-family: "Space Grotesk", sans-serif;
  text-align: center;
  border-radius: 6px;
}
.stamp--approved::before {
  content: ""; position: absolute;
  inset: -10px;
  border: 2px solid var(--ink);
  opacity: 0.35;
  border-radius: 10px;
}
.stamp--approved__big {
  font-size: 3.4rem; line-height: 1;
  letter-spacing: 0.08em;
  font-weight: 800;
  text-transform: uppercase;
}
.stamp--approved__line {
  display: flex; gap: 16px; justify-content: center;
  margin-top: 8px;
  font-size: 0.8rem; letter-spacing: 0.18em;
  text-transform: uppercase; font-weight: 600;
}
.stamp--approved__day  { font-family: "Cormorant Garamond", serif; font-size: 1.4rem; font-weight: 500; }

/* ─── Variant 5: vintage badge (olive green) ─── */
.stamp--badge {
  --ink: #2f5d33;
  --bg: #f3ead0;
  width: 320px;
  padding: 22px 26px 24px;
  background: var(--bg);
  color: var(--ink);
  text-align: center;
  position: relative;
  border-radius: 0;
  clip-path: polygon(
    50% 0,
    100% 8%,
    100% 92%,
    50% 100%,
    0 92%,
    0 8%
  );
  border: 0;
  font-family: "Space Grotesk", sans-serif;
}
.stamp--badge::before {
  content: ""; position: absolute; inset: 6px;
  border: 2px solid var(--ink);
  clip-path: inherit;
  pointer-events: none;
}
.stamp--badge__top {
  font-size: 0.74rem; letter-spacing: 0.4em;
  text-transform: uppercase; font-weight: 700;
  margin-top: 6px;
}
.stamp--badge__day {
  font-family: "Cormorant Garamond", serif;
  font-size: 4rem; line-height: 1;
  margin: 4px 0 2px;
}
.stamp--badge__sub {
  font-size: 0.74rem; letter-spacing: 0.18em;
  font-weight: 600;
}
.stamp--badge__divider {
  margin: 10px auto;
  width: 60px; height: 1px;
  background: var(--ink);
  position: relative;
}
.stamp--badge__divider::before,
.stamp--badge__divider::after {
  content: "★"; position: absolute; top: -10px;
  font-size: 0.7rem;
}
.stamp--badge__divider::before { left: -14px; }
.stamp--badge__divider::after  { right: -14px; }
.stamp--badge__date {
  font-size: 0.78rem; letter-spacing: 0.18em;
  font-weight: 600;
}

/* ============================================================
   Toasts
   ============================================================ */

.toast-stack {
  position: fixed; bottom: 24px; right: 24px;
  z-index: 200;
  display: flex; flex-direction: column; gap: 8px;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  padding: 12px 18px;
  background: var(--text);
  color: #fff;
  border-radius: 999px;
  font-size: 0.86rem;
  box-shadow: var(--shadow-strong);
  animation: toastIn 220ms ease, toastOut 220ms ease forwards;
  animation-delay: 0s, 3.4s;
}
.toast.toast--ok { background: linear-gradient(135deg, var(--ok), #1f8455); }
.toast.toast--err { background: linear-gradient(135deg, var(--danger), #a23838); }
@keyframes toastIn  { from { transform: translateY(20px); opacity: 0 } to { transform: translateY(0); opacity: 1 } }
@keyframes toastOut { to { transform: translateY(20px); opacity: 0 } }

/* ============================================================
   Footer
   ============================================================ */

footer.site-footer {
  margin-top: 60px;
  padding: 36px 0;
  border-top: 1px solid var(--line);
  background: rgba(255,255,255,0.4);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* ============================================================
   Utilities
   ============================================================ */

.flex { display: flex; }
.flex-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.flex-gap { display: flex; gap: 10px; align-items: center; }
.mt-0 { margin-top: 0 } .mt-1 { margin-top: 8px } .mt-2 { margin-top: 16px } .mt-3 { margin-top: 24px } .mt-4 { margin-top: 32px }
.text-muted { color: var(--text-muted); }
.text-faint { color: var(--text-faint); }
.text-sm { font-size: 0.85rem; }
.text-xs { font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); }
.hidden { display: none !important; }

.divider { height: 1px; background: var(--line); margin: 24px 0; }

/* ============================================================
   Responsive
   ============================================================ */

/* ── Tablet / small laptop ── */
@media (max-width: 720px) {
  .shell { width: min(calc(100% - 32px), var(--max-width)); }

  .site-header {
    gap: 10px;
    padding: 10px 16px;
    padding-right: 64px; /* mobile: leave room for the fixed gear */
    min-height: auto;
  }
  .site-logo__img { height: 56px; margin: -6px 0; }
  .settings-gear {
    top: 10px;
    right: 12px;
    width: 38px; height: 38px;
    font-size: 1.05rem;
  }

  /* Bottom bar: compact, equal-width tabs, icon-over-label */
  .site-nav {
    justify-content: space-around;
    gap: 0;
    padding: 6px 4px calc(6px + env(safe-area-inset-bottom, 0px));
  }
  .nav-link {
    flex: 1 1 0;
    flex-direction: column;
    gap: 2px;
    padding: 6px 2px 4px;
    min-height: 52px;
    font-size: 0.56rem;
    letter-spacing: 0.08em;
    border-radius: 14px;
  }
  .nav-link__icon { font-size: 1.25rem; }
  .nav-link__en { display: none; }

  main { padding-bottom: 88px; }
  footer.site-footer { margin-bottom: 56px; }

  #auth-cta { margin-left: auto !important; }
  .header-checkin {
    top: 10px; right: 12px;
    padding: 6px 14px;
    min-height: 36px;
    gap: 6px;
  }
  .header-checkin__label { font-size: 0.52rem; letter-spacing: 0.16em; }
  .header-checkin__day { font-size: 1rem; }
  .nav-user { padding: 4px 10px 4px 4px; min-height: 32px; font-size: 0.72rem; }
  .nav-user .avatar { width: 24px; height: 24px; font-size: 0.85rem; }

  .hero { padding: 56px 0 32px; }
  .hero .shell { gap: 22px; }
  .hero-subtitle { font-size: 0.98rem; }
  .hero-meta { gap: 10px; margin-top: 20px; grid-template-columns: repeat(2, 1fr); }
  .hero-meta__cell { padding: 12px 14px; }
  .hero-meta__num { font-size: 1.5rem; }
  .hero-meta__label { font-size: 0.62rem; letter-spacing: 0.14em; }

  .section { padding: 48px 0; }
  .section--tight { padding: 36px 0; }
  .card { padding: 20px; border-radius: var(--radius-md); }
  .modal { padding: 22px; border-radius: var(--radius-md); }
  .modal-overlay { padding: 16px 12px; }

  .btn { padding: 10px 18px; font-size: 0.78rem; }

  /* Lesson grid: 2 columns on phones, tighter card */
  .lesson-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
  .lesson-tile { padding: 12px 12px 10px; border-radius: var(--radius-sm); }
  .lesson-tile__title { font-size: 0.88rem; }
  .lesson-tile__deliv { font-size: 0.7rem; }

  /* Stage strip: keep 5 cols but tighter, and prevent text overflow */
  .stage-strip { gap: 6px; margin: 18px 0 6px; }
  .stage-strip__cell { padding: 10px 2px; border-radius: 10px; }
  .stage-strip__num { font-size: 1.4rem; }
  .stage-strip__name { font-size: 0.6rem; line-height: 1.25; }
  .stage-strip__range { font-size: 0.54rem; }
  .stage-strip__week { font-size: 0.44rem; letter-spacing: 0.12em; }

  /* Dashboard: ring + stats stack neatly */
  .progress-ring { --size: 140px; }
  .progress-ring__num { font-size: 2.1rem; }
  .stat-row { gap: 8px; grid-template-columns: repeat(3, 1fr); }
  .stat-cell { padding: 10px 8px; }
  .stat-cell .v { font-size: 1.2rem; }
  .stat-cell .l { font-size: 0.56rem; letter-spacing: 0.14em; }

  /* Today card */
  .today-card { gap: 12px; }
  .today-card .day-badge { width: 64px; height: 64px; border-radius: 18px; }
  .today-card .day-badge .d { font-size: 1.5rem; }
  .today-card .day-badge .l { font-size: 0.5rem; }

  /* Leaderboard summary: 2 columns on phones */
  .lb-summary { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .lb-summary__cell { padding: 14px; }
  .lb-summary__cell .v { font-size: 1.5rem; }
  .lb-summary__cell .l { font-size: 0.62rem; letter-spacing: 0.14em; }

  /* Stage block headers */
  .stage-block__head { margin-bottom: 14px; gap: 8px; }
  .stage-block__num { width: 36px; height: 36px; font-size: 1.1rem; border-radius: 12px; }

  /* Profile avatar uploader */
  .avatar-uploader { flex-direction: column; align-items: flex-start; gap: 12px; }

  /* Modal close button needs a bit of room */
  .modal__close { top: 12px; right: 12px; width: 32px; height: 32px; }

  /* Toasts — sit above the bottom function bar */
  .toast-stack { right: 12px; left: 12px; bottom: calc(72px + env(safe-area-inset-bottom, 0px)); }
  .toast { font-size: 0.78rem; text-align: center; padding: 10px 14px; }

  /* Footer */
  footer.site-footer { margin-top: 40px; padding: 28px 16px; font-size: 0.76rem; }
}

/* ── Narrow phones (iPhone SE, etc.) ── */
@media (max-width: 420px) {
  .shell { width: calc(100% - 24px); }

  .site-header { padding: 8px 12px; gap: 8px; }
  #auth-cta { padding: 6px 10px; font-size: 0.62rem; min-height: 30px; }

  .hero { padding: 44px 0 28px; }
  h1 { font-size: clamp(1.9rem, 8vw, 2.4rem); }
  .hero-title { font-size: clamp(2rem, 9vw, 2.6rem); }
  .hero-subtitle { font-size: 0.92rem; }
  .hero-actions { gap: 10px; }
  .hero-actions .btn { width: 100%; }

  .hero-meta { grid-template-columns: repeat(2, 1fr); }
  .hero-meta__num { font-size: 1.35rem; }

  .card { padding: 16px; }
  .modal { padding: 18px; }
  .modal-overlay { padding: 10px 8px; }

  /* Single-column lesson tiles below this width feels too sparse;
     keep 2 columns with minimum that fits two side-by-side on 320px. */
  .lesson-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .lesson-tile { padding: 10px; }
  .lesson-tile__id { font-size: 1rem; }
  .lesson-tile__title { font-size: 0.84rem; line-height: 1.3; }
  .lesson-tile__deliv { font-size: 0.66rem; padding-top: 6px; }

  /* Stage strip: split into 2 rows of 5 still works; further compact */
  .stage-strip__num { font-size: 1.2rem; }
  .stage-strip__name { font-size: 0.55rem; }

  /* Dashboard: stats wrap to 1 column if 3 don't fit comfortably */
  .progress-ring { --size: 124px; }
  .progress-ring__num { font-size: 1.8rem; }
  .stat-row { grid-template-columns: repeat(3, 1fr); gap: 6px; }
  .stat-cell { padding: 8px 6px; }
  .stat-cell .v { font-size: 1.05rem; }

  /* Leaderboard rows: tighten column widths and hide streak column */
  .lb-head, .lb-row-full {
    grid-template-columns: 32px 1.3fr 1fr 44px;
    gap: 6px;
    padding: 10px 10px;
  }
  .lb-head > div:nth-child(4), .lb-row-full > div:nth-child(4) { display: none; }
  .lb-row-full.is-me { padding-left: 7px; }
  .lb-rank { width: 28px; height: 28px; font-size: 0.92rem; }
  .lb-user { gap: 6px; }
  .lb-user .avatar { width: 26px; height: 26px; font-size: 0.85rem; flex-basis: 26px; }
  .lb-user__name { font-size: 0.82rem; }
  .lb-progress { gap: 6px; }
  .lb-progress__bar { height: 7px; }
  .lb-progress__num { font-size: 0.84rem; min-width: 32px; }
  .lb-days { font-size: 0.98rem; }

  /* Feed items: tighter */
  .feed-item { padding: 12px; gap: 10px; }
  .feed-item .avatar { width: 32px; height: 32px; font-size: 1rem; }

  /* Form rows */
  .input, textarea, select { padding: 10px 12px; }

  /* Tabs inside lesson modal */
  .tabs { width: 100%; }
  .tab-btn { padding: 8px 12px; font-size: 0.7rem; flex: 1; text-align: center; }
}

/* ════════════════════════════════════════════════════════════
   PWA install banner — floating bottom card
   ════════════════════════════════════════════════════════════ */
.pwa-install-banner {
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 88px);
  transform: translateX(-50%);
  z-index: 9000;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px 12px 12px;
  width: min(520px, calc(100vw - 32px));
  background: linear-gradient(135deg, rgba(20, 38, 70, 0.96), rgba(28, 52, 92, 0.96));
  border: 1px solid rgba(245, 196, 81, 0.4);
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(20px);
  color: var(--text);
  animation: pwa-slide-up 0.4s ease;
}
@keyframes pwa-slide-up {
  from { transform: translate(-50%, 20px); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}
.pwa-install-banner.hidden { display: none; }
.pwa-install-banner__icon {
  font-size: 1.6rem;
  line-height: 1;
}
.pwa-install-banner__text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.3;
  min-width: 0;
}
.pwa-install-banner__text strong {
  font-size: 0.92rem;
  color: var(--accent, #f5c451);
}
.pwa-install-banner__text small {
  font-size: 0.74rem;
  color: var(--text-muted, rgba(255,255,255,0.6));
}
.pwa-install-banner__close {
  background: transparent;
  border: 0;
  color: var(--text-muted, rgba(255,255,255,0.6));
  font-size: 1.1rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 8px;
  transition: background 0.2s;
}
.pwa-install-banner__close:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

@media (max-width: 480px) {
  .pwa-install-banner {
    bottom: calc(env(safe-area-inset-bottom, 0px) + 76px);
    padding: 10px 12px;
  }
  .pwa-install-banner__icon { font-size: 1.3rem; }
  .pwa-install-banner__text strong { font-size: 0.85rem; }
  .pwa-install-banner__text small { font-size: 0.68rem; }
}

/* When installed as standalone PWA, hide the install banner permanently
   and add extra safe-area padding to the bottom nav */
@media (display-mode: standalone) {
  .pwa-install-banner { display: none !important; }
  .site-nav {
    padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 8px);
  }
}

/* ════════════════════════════════════════════════════════════════
   Curriculum redesign · Phase selector bar + Day track cards
   ════════════════════════════════════════════════════════════════ */

.curriculum-redesign {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* ── Phase bar — sticky header for the curriculum view ── */
.phase-bar {
  position: sticky;
  top: calc(var(--header-h, 72px) + 6px);
  z-index: 30;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
}
.phase-bar__sub {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.phase-bar__sub strong {
  color: var(--text);
  font-weight: 600;
}
.phase-bar__nav {
  display: flex;
  gap: 6px;
}
.phase-bar__nav-btn {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-soft);
  font-size: 0.95rem;
  transition: background 150ms, border-color 150ms, color 150ms;
}
.phase-bar__nav-btn:hover {
  background: var(--surface-strong);
  border-color: var(--line-strong);
  color: var(--text);
}
.phase-bar__nav-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ── Phase meta card — title + description + what you'll build ── */
.phase-hero {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 18px 22px;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--c, var(--accent)) 14%, white),
    color-mix(in srgb, var(--c, var(--accent)) 4%, white));
  border: 1px solid color-mix(in srgb, var(--c, var(--accent)) 28%, transparent);
  border-radius: var(--radius-md);
}
.phase-hero__num {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--c, var(--accent));
  color: white;
  font-weight: 700;
  font-size: 1.5rem;
  display: grid;
  place-items: center;
  letter-spacing: -0.02em;
  box-shadow: 0 6px 16px color-mix(in srgb, var(--c, var(--accent)) 38%, transparent);
}
.phase-hero__body { min-width: 0; }
.phase-hero__title {
  margin: 0 0 4px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}
.phase-hero__meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.phase-hero__meta span { display: inline-flex; align-items: center; gap: 4px; }
.phase-hero__progress {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  min-width: 140px;
}
.phase-hero__progress-num {
  font-size: 1.35rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  letter-spacing: -0.02em;
}
.phase-hero__progress-num small {
  font-size: 0.74rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-left: 4px;
}
.phase-hero__progress-bar {
  width: 140px;
  height: 5px;
  background: rgba(0,0,0,0.07);
  border-radius: 2px;
  overflow: hidden;
}
.phase-hero__progress-fill {
  height: 100%;
  background: var(--c, var(--accent));
  transition: width 500ms cubic-bezier(.4,.0,.2,1);
}

/* ── Track list — vertical stack of day cards ── */
.curriculum-track {
  display: flex;
  flex-direction: column;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
}

/* ── Track card — horizontal lane card for one day ── */
.track-card {
  display: grid;
  grid-template-columns: var(--track-lane) 1fr auto;
  gap: 16px;
  align-items: stretch;
  padding: 0;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform 160ms cubic-bezier(.4,.0,.2,1),
              border-color 160ms,
              box-shadow 200ms,
              background 160ms;
  text-align: left;
  width: 100%;
  font: inherit;
  color: inherit;
  overflow: hidden;
}
.track-card:hover {
  transform: translateX(2px);
  border-color: var(--c, var(--accent));
  box-shadow: var(--shadow-card);
}
.track-card.is-done {
  background: linear-gradient(90deg,
    color-mix(in srgb, var(--ok) 6%, white) 0,
    var(--surface-strong) 40%);
}
.track-card.is-today {
  border-color: var(--c, var(--accent));
  box-shadow: 0 0 0 1px var(--c, var(--accent)), var(--shadow-card);
}
.track-card.is-milestone .track-card__lane {
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--c, var(--accent)) 18%, white),
    color-mix(in srgb, var(--c, var(--accent)) 8%, white));
}

/* Lane: D## big number + status dot */
.track-card__lane {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 14px 8px;
  background: color-mix(in srgb, var(--c, var(--accent)) 5%, white);
  border-right: 1px solid var(--line);
  position: relative;
}
.track-card__lane::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--c, var(--accent));
  opacity: 0.7;
}
.track-card__day {
  font-family: "Inter", sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.track-card__day-sub {
  font-size: 0.62rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
}
.track-card__star {
  color: var(--accent);
  font-size: 0.9rem;
  margin-top: 2px;
}

/* Body: title + deliverable */
.track-card__body {
  padding: 12px 4px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}
.track-card__title {
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
  letter-spacing: -0.005em;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.track-card__deliv {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Aside: status + time */
.track-card__aside {
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  gap: 6px;
  min-width: 80px;
  border-left: 1px dashed var(--line);
}
.track-card__time {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.track-card__status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.track-card__status.is-done {
  background: color-mix(in srgb, var(--ok) 14%, white);
  color: var(--ok);
}
.track-card__status.is-today {
  background: color-mix(in srgb, var(--accent) 18%, white);
  color: var(--accent-deep);
}
.track-card__status.is-pending {
  background: rgba(0,0,0,0.04);
  color: var(--text-muted);
}

/* Empty state when phase has no rendered days yet */
.curriculum-track:empty::before {
  content: '加载中…';
  display: block;
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

@media (max-width: 720px) {
  :root { --track-lane: 56px; }
  .phase-bar {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .phase-bar__sub {
    order: 2;
    flex-wrap: wrap;
    font-size: 0.72rem;
  }
  .phase-bar__nav {
    order: 3;
    align-self: flex-end;
  }
  .phase-hero {
    grid-template-columns: auto 1fr;
    padding: 14px 16px;
    gap: 12px;
  }
  .phase-hero__num { width: 44px; height: 44px; font-size: 1.15rem; }
  .phase-hero__progress {
    grid-column: 1 / -1;
    flex-direction: row;
    align-items: center;
    min-width: 0;
  }
  .phase-hero__progress-bar { flex: 1; width: auto; }
  .track-card { grid-template-columns: var(--track-lane) 1fr; }
  .track-card__aside {
    grid-column: 1 / -1;
    flex-direction: row;
    border-left: 0;
    border-top: 1px dashed var(--line);
    padding: 6px 14px;
    justify-content: space-between;
  }
  .track-card__lane { padding: 10px 4px; }
  .track-card__day { font-size: 0.95rem; }
  .track-card__title { font-size: 0.9rem; }
  .track-card__deliv { font-size: 0.74rem; }
}

/* =============================================================
   Check-in calendar (dashboard)
============================================================= */
.cal-card { overflow: hidden; }
.cal-head {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 16px; flex-wrap: wrap;
}
.cal-tabs { display: inline-flex; background: rgba(23,50,77,0.05); border-radius: 999px; padding: 4px; }
.cal-tab {
  border: 0; background: transparent; cursor: pointer;
  padding: 6px 16px; border-radius: 999px;
  font-size: 0.78rem; font-weight: 600; color: var(--text-muted);
  transition: background 180ms, color 180ms;
}
.cal-tab:hover { color: var(--text); }
.cal-tab.is-active { background: var(--accent); color: #fff; }

.cal-nav {
  display: flex; align-items: center; justify-content: center; gap: 14px;
  margin: 14px 0 10px;
}
.cal-nav-btn {
  border: 1px solid var(--line); background: rgba(255,255,255,0.6);
  border-radius: 999px; width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text-muted);
  transition: background 160ms, color 160ms;
  font-size: 1.1rem; line-height: 1;
}
.cal-nav-btn:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.cal-title {
  font-family: "Cormorant Garamond", serif; font-size: 1.15rem; color: var(--text);
  min-width: 180px; text-align: center;
}

.cal-body { margin-top: 4px; }

.cal-week {
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px;
}
.cal-month__head {
  display: grid; grid-template-columns: repeat(7, 1fr);
  margin-bottom: 6px;
}
.cal-dow {
  text-align: center;
  font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-muted);
}
.cal-month {
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px;
}

.cal-cell {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255,255,255,0.55);
  aspect-ratio: 1 / 1;
  padding: 6px;
  display: flex; flex-direction: column; gap: 2px;
  overflow: hidden;
  transition: transform 180ms, box-shadow 180ms;
}
.cal-cell--week { aspect-ratio: auto; min-height: 96px; }
.cal-cell.is-faded { opacity: 0.35; }
.cal-cell.is-today { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(183,140,53,0.18); }
.cal-cell.is-done { background: rgba(183,140,53,0.06); }
.cal-cell__dow {
  font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-muted);
}
.cal-cell__date {
  font-family: "Cormorant Garamond", serif;
  font-size: 1rem; color: var(--text);
}
.cal-cell--week .cal-cell__date { font-size: 1.25rem; }

/* Stamp — a tilted, slightly-faded postal mark with double border ring. */
.cal-stamp {
  position: absolute;
  right: 6px; bottom: 6px;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 2px solid #c44a3e;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.7), inset 0 0 0 3px #c44a3e;
  color: #c44a3e;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  font-family: "Cormorant Garamond", serif;
  transform: rotate(-14deg);
  opacity: 0.82;
  background: rgba(255,255,255,0.05);
  pointer-events: none;
  animation: stampDrop 320ms ease-out;
}
.cal-stamp__check { font-size: 1.05rem; line-height: 1; font-weight: 700; }
.cal-stamp__day {
  font-size: 0.6rem; letter-spacing: 0.08em; text-transform: uppercase;
  margin-top: 1px;
}
.cal-cell--week .cal-stamp { width: 58px; height: 58px; }
.cal-cell--week .cal-stamp__check { font-size: 1.5rem; }
.cal-cell--week .cal-stamp__day { font-size: 0.7rem; }

@keyframes stampDrop {
  0% { transform: rotate(-14deg) scale(1.6); opacity: 0; }
  60% { transform: rotate(-14deg) scale(0.92); opacity: 1; }
  100% { transform: rotate(-14deg) scale(1); opacity: 0.82; }
}

/* Year view */
.cal-year {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}
.cal-year__tile {
  border: 1px solid var(--line); border-radius: 12px;
  padding: 12px; background: rgba(255,255,255,0.55);
}
.cal-year__title {
  font-family: "Cormorant Garamond", serif; font-size: 1rem;
  color: var(--text); margin-bottom: 6px;
}
.cal-year__mini {
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 3px;
}
.cal-year__dot {
  aspect-ratio: 1 / 1; border-radius: 3px;
  background: rgba(23,50,77,0.08);
}
.cal-year__dot.is-faded { background: transparent; }
.cal-year__dot.is-done { background: var(--accent); box-shadow: 0 0 0 1px rgba(183,140,53,0.4); }
.cal-year__dot.is-today { outline: 1.5px solid var(--accent); outline-offset: 1px; }
.cal-year__count {
  margin-top: 8px;
  font-size: 0.74rem; color: var(--text-muted);
  letter-spacing: 0.08em;
}

@media (max-width: 640px) {
  .cal-cell--week { min-height: 76px; }
  .cal-stamp { width: 34px; height: 34px; }
  .cal-stamp__check { font-size: 0.9rem; }
  .cal-stamp__day { font-size: 0.52rem; }
  .cal-week { gap: 6px; }
  .cal-month { gap: 4px; }
  .cal-title { min-width: auto; }
}