:root {
  --bg: #f2f5fb;
  --bg-alt: #eaf0ff;
  --panel: #ffffff;
  --panel-soft: #f6f9ff;
  --line: #d5def0;
  --line-strong: #aebfe4;
  --text: #13213f;
  --muted: #5f6f93;
  --brand: #2157d6;
  --brand-soft: #4b86ff;
  --accent: #12b39a;
  --warn: #f6a53a;
  --danger: #e25d57;
  --shadow-lg: 0 26px 60px rgba(24, 48, 98, 0.16);
  --shadow-md: 0 14px 34px rgba(25, 55, 116, 0.12);
  --radius-xl: 1.25rem;
  --radius-lg: 1rem;
  --radius-md: 0.78rem;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--text);
  font-family: "Outfit", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 0% 0%, rgba(33, 87, 214, 0.16), transparent 34%),
    radial-gradient(circle at 100% 100%, rgba(18, 179, 154, 0.12), transparent 32%),
    linear-gradient(170deg, #f9fbff 0%, var(--bg) 58%, #eef3ff 100%);
  position: relative;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  width: 360px;
  height: 360px;
  border-radius: 999px;
  pointer-events: none;
  z-index: -1;
  filter: blur(18px);
  animation: drift 24s ease-in-out infinite;
}

body::before {
  left: -120px;
  top: 14vh;
  background: radial-gradient(circle, rgba(33, 87, 214, 0.24) 0%, rgba(33, 87, 214, 0) 70%);
}

body::after {
  right: -120px;
  bottom: 12vh;
  background: radial-gradient(circle, rgba(18, 179, 154, 0.2) 0%, rgba(18, 179, 154, 0) 72%);
  animation-delay: -9s;
}

@keyframes drift {
  0% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-16px) scale(1.06);
  }
  100% {
    transform: translateY(0) scale(1);
  }
}

a {
  color: var(--brand);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1,
h2,
h3,
h4 {
  margin-top: 0;
  letter-spacing: 0.01em;
}

p {
  line-height: 1.55;
}

ul,
ol {
  line-height: 1.55;
}

.site-shell {
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  min-height: 100vh;
}

.site-sidebar {
  border-right: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(242, 247, 255, 0.94) 100%);
  padding: 1.05rem 0.92rem;
  backdrop-filter: blur(4px);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.62rem;
  margin-bottom: 1rem;
  color: var(--text);
}

.brand-dot {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  box-shadow: 0 0 0 6px rgba(33, 87, 214, 0.16);
}

.brand strong {
  display: block;
  font-size: 1rem;
}

.brand small {
  display: block;
  font-size: 0.73rem;
  color: var(--muted);
}

.top-nav {
  display: grid;
  gap: 0.45rem;
  margin-bottom: 1rem;
}

.top-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--line);
  border-radius: 0.84rem;
  background: var(--panel);
  padding: 0.58rem 0.66rem;
  font-weight: 600;
  color: #203257;
  box-shadow: 0 8px 22px rgba(29, 60, 122, 0.08);
  transition: transform 170ms ease, box-shadow 170ms ease, border-color 170ms ease;
}

.top-nav a::after {
  content: "→";
  color: var(--muted);
  font-size: 0.78rem;
}

.top-nav a.is-active {
  border-color: rgba(33, 87, 214, 0.45);
  background: linear-gradient(140deg, rgba(33, 87, 214, 0.14), rgba(75, 134, 255, 0.08));
}

.top-nav a:hover {
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(33, 87, 214, 0.14);
}

.week-nav {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 0.72rem;
  background: var(--panel);
  box-shadow: var(--shadow-md);
}

.week-nav header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.54rem;
}

.week-nav header h2 {
  margin: 0;
  font-size: 0.98rem;
}

.week-nav header p {
  margin: 0;
  font-size: 0.74rem;
  color: var(--muted);
}

.week-nav-item {
  border: 1px solid var(--line);
  border-radius: 0.82rem;
  margin-bottom: 0.54rem;
  overflow: hidden;
  background: #fff;
  transition: transform 170ms ease, box-shadow 170ms ease;
}

.week-nav-item:last-child {
  margin-bottom: 0;
}

.week-nav-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.45rem;
  padding: 0.56rem 0.64rem;
  background: linear-gradient(170deg, #f7faff 0%, #f2f6ff 100%);
}

.week-nav-item summary::-webkit-details-marker {
  display: none;
}

.week-nav-label {
  display: grid;
  gap: 0.12rem;
}

.week-nav-link {
  font-weight: 700;
  color: #1c315f;
}

.week-nav-label small {
  color: var(--muted);
  font-size: 0.7rem;
}

.week-nav-count {
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  padding: 0.1rem 0.5rem;
  font-size: 0.72rem;
  color: #213867;
  background: #fff;
}

.week-nav-item ul {
  margin: 0;
  padding: 0.46rem;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 0.34rem;
}

.week-nav-item li a {
  display: grid;
  gap: 0.05rem;
  border: 1px solid var(--line);
  border-radius: 0.58rem;
  padding: 0.35rem 0.45rem;
  background: #fff;
  color: #1e3360;
  transition: transform 140ms ease, border-color 140ms ease;
}

.week-nav-item li a strong {
  font-size: 0.74rem;
}

.week-nav-item li a small {
  font-size: 0.66rem;
  color: var(--muted);
}

.week-nav-item li a:hover {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  text-decoration: none;
}

.site-main {
  padding: 1.25rem 1.25rem 2rem;
}

.page-header {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.95), rgba(248, 252, 255, 0.92));
  box-shadow: var(--shadow-lg);
  padding: 1.05rem 1.16rem;
  margin-bottom: 1rem;
  position: relative;
  overflow: hidden;
}

.page-header::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -50px;
  width: 180px;
  height: 180px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(33, 87, 214, 0.14) 0%, transparent 72%);
}

.page-header h1 {
  margin: 0 0 0.25rem;
  font-size: clamp(1.5rem, 2.4vw, 2.05rem);
}

.page-header p {
  margin: 0;
  color: var(--muted);
}

.page-content {
  max-width: 1320px;
}

.panel,
.content-panel,
.page-hero,
.home-hero,
.week-panel,
.daily-panel,
.calendar-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--panel);
  box-shadow: var(--shadow-md);
  padding: 1rem;
  margin-bottom: 0.95rem;
  transition: transform 190ms ease, box-shadow 190ms ease;
}

.hero-kicker,
.page-kicker,
.home-kicker,
.week-kicker,
.day-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.62rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.71rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--brand), var(--brand-soft));
  color: #fff;
  margin-bottom: 0.55rem;
}

.hero-subline {
  color: var(--muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  padding: 0.44rem 0.86rem;
  font-weight: 600;
  color: #1a2d58;
}

.btn.btn-primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--brand), var(--brand-soft));
  color: #fff;
}

.btn.btn-ghost {
  background: rgba(255, 255, 255, 0.62);
}

.landing-actions {
  margin-top: 0.82rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.44rem;
}

.landing-metrics,
.week-metrics-grid,
.daily-dashboard-grid,
.home-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.64rem;
}

.metric,
.week-metric-card,
.daily-metric-card,
.home-stat-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  padding: 0.65rem 0.72rem;
}

.metric span,
.week-metric-card strong,
.daily-metric-card strong,
.home-stat-card strong {
  display: block;
  font-size: 1.16rem;
  font-weight: 700;
}

.metric small,
.week-metric-card small,
.daily-metric-card small,
.home-stat-card small {
  color: var(--muted);
  font-size: 0.74rem;
}

.home-hero {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(243, 248, 255, 0.9));
}

.home-top-grid,
.home-chart-grid,
.home-links-grid,
.week-story-grid,
.week-detail-grid,
.daily-story-grid,
.daily-section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.78rem;
}

.home-card,
.home-chart-card,
.home-link-card,
.week-story-card,
.week-detail-card,
.daily-story-card,
.daily-section-card,
.info-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  padding: 0.9rem;
  box-shadow: 0 8px 20px rgba(22, 47, 94, 0.08);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.home-card h3,
.home-chart-card h3,
.home-link-card h3,
.week-story-card h3,
.week-detail-card h3,
.daily-story-card h3,
.daily-section-card h3 {
  margin-bottom: 0.55rem;
}

.home-link-card {
  position: relative;
  overflow: hidden;
}

.home-link-card::after {
  content: "";
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 999px;
  top: -54px;
  right: -46px;
  background: radial-gradient(circle, rgba(33, 87, 214, 0.15) 0%, transparent 68%);
}

.home-card:hover,
.home-chart-card:hover,
.home-link-card:hover,
.week-story-card:hover,
.week-detail-card:hover,
.daily-story-card:hover,
.daily-section-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 34px rgba(26, 56, 108, 0.16);
  border-color: var(--line-strong);
}

.chart-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  padding: 0.72rem;
  position: relative;
}

.chart-wrap::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(33, 87, 214, 0.04), transparent 40%);
  pointer-events: none;
}

.chart-wrap canvas {
  width: 100% !important;
  height: 250px !important;
}

.week-shell,
.daily-shell {
  margin-bottom: 0.95rem;
}

.week-hero,
.daily-hero {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, #fff, #f3f8ff);
  box-shadow: var(--shadow-lg);
  padding: 1rem;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(220px, 0.9fr);
  gap: 0.8rem;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.week-hero::after,
.daily-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -90px;
  width: 220px;
  height: 220px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(18, 179, 154, 0.16) 0%, transparent 70%);
}

.week-hero-copy,
.daily-hero-copy {
  min-width: 0;
}

.week-hero-copy h2,
.daily-hero-copy h2 {
  margin-bottom: 0.5rem;
}

.week-hero-visual,
.daily-hero-visual {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, #f8fbff, #ecf3ff);
  padding: 0.4rem;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.week-hero-visual img,
.daily-hero-visual img {
  max-width: 100%;
  height: auto;
}

.week-top-summary {
  margin-top: 0.8rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 0.56rem;
}

.week-summary-card {
  border: 1px solid var(--line);
  border-radius: 0.84rem;
  padding: 0.58rem 0.64rem;
  background: #fff;
  border-left: 3px solid var(--brand-soft);
}

.week-summary-card strong {
  display: block;
  margin-bottom: 0.1rem;
}

.week-summary-card small {
  color: var(--muted);
}

.week-days-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(135px, 1fr));
  gap: 0.48rem;
}

.week-day-tile {
  border: 1px solid var(--line);
  border-radius: 0.72rem;
  background: #fff;
  padding: 0.5rem;
}

.week-day-tile span {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
}

.week-day-tile strong {
  display: block;
  font-size: 0.89rem;
  color: #1b315e;
}

details.content-toggle,
.plan-week-group {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  margin-bottom: 0.72rem;
  overflow: hidden;
}

details.content-toggle summary,
.plan-week-group summary {
  list-style: none;
  cursor: pointer;
  padding: 0.72rem 0.9rem;
  background: linear-gradient(175deg, #f8fbff, #f1f6ff);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

details.content-toggle summary::-webkit-details-marker,
.plan-week-group summary::-webkit-details-marker {
  display: none;
}

.toggle-body {
  padding: 0.9rem;
}

.toggle-body h4 {
  margin-top: 0;
}

.toggle-body .table-wrap {
  margin-top: 0.65rem;
}

.table-wrap {
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  overflow-x: auto;
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
}

.table-wrap th,
.table-wrap td {
  border-bottom: 1px solid var(--line);
  padding: 0.52rem 0.62rem;
  text-align: left;
}

.table-wrap th {
  font-size: 0.77rem;
  color: #334062;
  background: #f4f8ff;
}

.topic-table tr.lvl-1 td:first-child {
  padding-left: 1.05rem;
  color: #3a4f7a;
}

.topic-table tr.lvl-2 td:first-child,
.topic-table tr.lvl-3 td:first-child {
  padding-left: 1.5rem;
  color: #56688f;
}

.topic-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
}

.topic-chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  font-size: 0.72rem;
  color: #243a69;
  background: #fff;
}

.math-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.6rem;
}

.math-card {
  border: 1px solid var(--line);
  border-radius: 0.84rem;
  background: #fcfeff;
  padding: 0.56rem 0.64rem;
}

.math-card p {
  margin: 0.2rem 0;
}

.week-calendar-frame,
.daily-calendar-frame,
.calendar-embed-frame {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
}

iframe {
  width: 100%;
  border: 0;
  min-height: 420px;
}

.plan-toolbar {
  margin-bottom: 0.72rem;
}

.plan-toolbar input {
  width: min(420px, 100%);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 0.52rem 0.85rem;
  font: inherit;
  background: #fff;
}

.plan-week-group {
  margin-bottom: 0.62rem;
}

.plan-week-group .week-summary-head {
  display: grid;
  gap: 0.14rem;
}

.plan-week-group .week-summary-head small {
  font-size: 0.69rem;
  color: var(--muted);
}

.plan-week-group .week-main-link {
  font-weight: 700;
  color: #173266;
}

.plan-week-group .week-count {
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 0.14rem 0.52rem;
  font-size: 0.72rem;
  color: #2b3c64;
  background: #fff;
}

.week-links {
  margin: 0;
  padding: 0.66rem;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.45rem;
}

.week-links a {
  border: 1px solid var(--line);
  border-radius: 0.76rem;
  background: #fff;
  padding: 0.52rem 0.58rem;
  display: grid;
  gap: 0.1rem;
  color: #1d3360;
  transition: transform 150ms ease, border-color 150ms ease;
}

.week-links a strong {
  font-size: 0.83rem;
}

.week-links a span {
  color: var(--muted);
  font-size: 0.76rem;
}

.week-links a:hover {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  text-decoration: none;
}

.daily-rhythm-track {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.4rem;
}

.daily-rhythm-track span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.28rem 0.55rem;
  font-size: 0.72rem;
  text-align: center;
  background: #f8fbff;
}

.todo-table td:nth-child(1),
.todo-table td:nth-child(2) {
  white-space: nowrap;
}

.daily-tags {
  display: flex;
  gap: 0.36rem;
  flex-wrap: wrap;
}

.daily-tag {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  padding: 0.16rem 0.46rem;
  font-size: 0.7rem;
  color: #294070;
}

.daily-section-card h3,
.week-story-card h3,
.week-detail-card h3,
.home-chart-card h3 {
  position: relative;
  padding-left: 0.75rem;
}

.daily-section-card h3::before,
.week-story-card h3::before,
.week-detail-card h3::before,
.home-chart-card h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.26rem;
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
}

.calendar-page .calendar-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(250px, 0.8fr);
  gap: 0.8rem;
  align-items: center;
}

.calendar-controls {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem;
  background: #fff;
  margin: 0.84rem 0 0.75rem;
}

.calendar-mode {
  border: 0;
  background: transparent;
  border-radius: 999px;
  padding: 0.33rem 0.74rem;
  cursor: pointer;
  font: inherit;
  color: #2a3e69;
}

.calendar-mode.is-active {
  background: linear-gradient(135deg, var(--brand), var(--brand-soft));
  color: #fff;
}

.calendar-page .calendar-tip-grid {
  margin-top: 0.78rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.46rem;
}

.calendar-page .calendar-tip {
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  padding: 0.44rem 0.52rem;
  background: #fff;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: transform 360ms ease, opacity 360ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.hide-on-site {
  display: none !important;
}

@media (max-width: 1080px) {
  .site-shell {
    grid-template-columns: 1fr;
  }

  .site-sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    position: static;
    height: auto;
    overflow: visible;
  }

  .site-main {
    padding: 0.92rem;
  }

  .week-hero,
  .daily-hero,
  .calendar-page .calendar-hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .page-content {
    max-width: 100%;
  }

  .page-header,
  .home-hero,
  .content-panel,
  .calendar-panel {
    padding: 0.82rem;
  }

  .week-links {
    grid-template-columns: 1fr;
  }

  .chart-wrap canvas {
    height: 220px !important;
  }
}