/* === CSS Variables === */
:root {
  --primary: #D97757;
  --primary-dark: #B8542A;
  --primary-light: #FDF0E8;
  --accent: #C96B3A;
  --accent-dark: #A0491E;
  --bg: #FAF9F7;
  --bg-dark: #F2EDE6;
  --white: #FFFFFF;
  --text: #1C1410;
  --text-muted: #A0522D;
  --text-sub: #6B5B4E;
  --border: rgba(217, 119, 87, 0.15);
  --shadow: 0 4px 24px rgba(217, 119, 87, 0.12);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-xs: 4px;
}

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans JP', 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

/* === Scroll Progress Bar === */
.scroll-indicator {
  position: fixed; top: 0; left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 300; width: 0%;
  transition: width 0.1s linear;
}

/* === Navigation === */
#mainNav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.05);
  transition: box-shadow 0.3s;
}
#mainNav.scrolled { box-shadow: 0 2px 16px rgba(0, 0, 0, 0.1); }
.nav-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 24px;
}
.nav-logo {
  font-size: 0.88rem; font-weight: 700; color: var(--text);
  text-decoration: none; display: flex; align-items: center; gap: 8px;
  white-space: nowrap;
}
.nav-logo-icon { font-size: 20px !important; color: var(--primary); }
.nav-tabs { display: flex; gap: 2px; align-items: center; flex-shrink: 0; }
.nav-tab-link {
  display: inline-flex; align-items: center;
  padding: 6px 13px; border-radius: var(--radius-sm);
  font-size: 0.82rem; font-weight: 600;
  color: var(--text-sub); text-decoration: none;
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}
.nav-tab-link:hover { color: var(--primary); background: var(--primary-light); text-decoration: none; }
.nav-tab-link.active { color: var(--primary); background: var(--primary-light); }
.nav-tab-link--day {
  background: linear-gradient(135deg, rgba(217,119,87,0.16) 0%, rgba(201,107,58,0.10) 100%);
  color: var(--accent);
  border: 1.5px solid rgba(217, 119, 87, 0.38);
  border-radius: 50px !important;
  font-weight: 700;
  font-size: 0.84rem;
  padding: 5px 16px;
  box-shadow: 0 2px 8px rgba(217, 119, 87, 0.16);
}
.nav-tab-link--day:hover {
  background: var(--primary); color: #fff;
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(217, 119, 87, 0.40);
  text-decoration: none;
}
.nav-tab-link--day.active {
  background: linear-gradient(150deg, #D06030 0%, #AA4418 100%);
  color: #fff; border-color: transparent;
  box-shadow: 0 3px 14px rgba(160, 60, 20, 0.42);
}

/* === Hero === */
.hero {
  background: var(--bg);
  padding: 80px 24px 32px;
  display: flex; flex-direction: column; align-items: center;
}
.hero-badge-wrap {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.75rem; font-weight: 800; letter-spacing: 0.14em;
  text-transform: uppercase;
  background: linear-gradient(150deg, #D06030 0%, #AA4418 100%);
  color: #fff; padding: 5px 16px; border-radius: 50px;
  box-shadow: 0 3px 12px rgba(160,60,20,0.38);
}
.hero-badge .material-icons { font-size: 14px; }
.hero-title {
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  font-weight: 800; color: var(--text);
  text-align: center; line-height: 1.25;
  margin-bottom: 10px; word-break: keep-all;
}
.hero-subtitle {
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
  color: var(--text-sub); text-align: center;
  max-width: 600px; line-height: 1.7; margin-bottom: 0;
}

/* === Buttons === */
.btn-sm {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 18px; border-radius: 50px; border: none; cursor: pointer;
  background: var(--primary-light); color: var(--primary);
  font-size: 0.85rem; font-weight: 600; text-decoration: none;
  transition: background 0.2s;
}
.btn-sm:hover { background: var(--primary); color: #fff; text-decoration: none; }
.btn-sm .material-icons { font-size: 15px; }

/* === Layout === */
.section-inner { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
section { padding: 64px 0; }
section.bg-white { background: var(--white); }
section.bg-dark { background: var(--bg-dark); }

.section-label {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--primary); margin-bottom: 8px;
}
.section-title {
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  font-weight: 700; line-height: 1.35;
  margin-bottom: 12px; word-break: keep-all;
}
.section-desc {
  font-size: 0.95rem; color: var(--text-sub);
  max-width: 100%; margin-bottom: 40px; line-height: 1.7;
}

/* === Portal Intro === */
.portal-intro {
  display: flex; align-items: flex-start; gap: 14px;
  background: var(--primary-light); border: 1px solid var(--border);
  border-radius: 10px; padding: 18px 22px; margin-bottom: 36px;
}
.portal-intro-icon { color: var(--primary); font-size: 20px; flex-shrink: 0; margin-top: 3px; }
.portal-intro-body p { font-size: 0.88rem; color: var(--text-sub); line-height: 1.8; margin: 0; }
.portal-intro-body strong { color: var(--text); font-weight: 600; }

/* === Tab Navigation === */
.tab-nav-wrapper {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 56px; z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.tab-nav {
  max-width: 1100px; margin: 0 auto;
  display: flex; overflow-x: auto;
  scrollbar-width: none; -ms-overflow-style: none;
  gap: 6px !important;
  padding: 10px 20px !important;
}
.tab-nav::-webkit-scrollbar { display: none; }
.tab-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 18px !important;
  font-size: 0.84rem !important; font-weight: 500 !important;
  color: var(--text-sub) !important; background: rgba(0,0,0,0.05) !important;
  border: 1px solid rgba(0,0,0,0.08) !important;
  border-radius: 10px !important;
  border-bottom: none !important;
  cursor: pointer; white-space: nowrap;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06) !important;
  transition: background 0.18s, color 0.18s, transform 0.15s, box-shadow 0.15s !important;
}
.tab-btn .material-icons { font-size: 18px; }
.tab-btn:hover {
  background: rgba(0,0,0,0.10) !important;
  color: var(--text) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 4px 10px rgba(0,0,0,0.10) !important;
}
.tab-btn.active {
  background: #C05020 !important;
  color: #fff !important; border-color: transparent !important;
  box-shadow: 0 3px 10px rgba(192,80,32,0.32) !important;
}
.tab-btn.tab-btn--day {
  background: linear-gradient(135deg, rgba(208,96,48,0.12) 0%, rgba(160,60,20,0.07) 100%) !important;
  color: #B84010 !important;
  border: 1.5px solid rgba(208,96,48,0.40) !important;
  font-weight: 700 !important; font-size: 0.88rem !important;
  box-shadow: 0 2px 6px rgba(208,96,48,0.14) !important;
}
.tab-btn.tab-btn--day:hover {
  background: #D06030 !important; color: #fff !important;
  border-color: transparent !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 18px rgba(208,96,48,0.36) !important;
}
.tab-btn.tab-btn--day.active {
  background: linear-gradient(150deg, #D06030 0%, #AA4418 100%) !important;
  color: #fff !important; border-color: transparent !important;
  box-shadow: 0 4px 16px rgba(160,60,20,0.42) !important;
}

/* === Tab Content === */
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* === Card Grid === */
.card-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

/* === Card === */
.card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.card-icon {
  width: 44px; height: 44px; border-radius: var(--radius-sm);
  background: var(--primary-light);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.card-icon .material-icons { color: var(--primary); font-size: 22px; }
.card-icon.accent { background: rgba(217, 119, 87, 0.1); }
.card-icon.accent .material-icons { color: var(--accent-dark); }
.card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.card p { font-size: 0.875rem; color: var(--text-sub); line-height: 1.7; }
.card-link-row {
  margin-top: 16px; padding-top: 14px;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}

/* === Back Button === */
.back-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: var(--radius-sm);
  background: none; border: 1.5px solid var(--border);
  font-size: 0.85rem; font-weight: 600; color: var(--text-sub);
  cursor: pointer; font-family: inherit;
  margin-bottom: 28px;
  transition: border-color 0.2s, color 0.2s;
}
.back-btn:hover { border-color: var(--primary); color: var(--primary); }
.back-btn .material-icons { font-size: 17px; }

/* === Loading === */
.load-msg {
  display: flex; align-items: center; gap: 8px;
  padding: 24px; color: var(--text-sub); font-size: 0.9rem;
}
.load-msg .material-icons { font-size: 20px; opacity: 0.6; }

/* === Preparing Badge === */
.preparing-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--bg-dark); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 6px 14px;
  font-size: 0.82rem; color: var(--text-muted); font-weight: 600;
}
.preparing-badge .material-icons { font-size: 15px; }

/* === Scroll Animation === */
.fi { opacity: 0; transform: translateY(16px); transition: opacity 0.55s ease, transform 0.55s ease; }
.fi.visible { opacity: 1; transform: translateY(0); }
.fi.delay-1 { transition-delay: 0.08s; }
.fi.delay-2 { transition-delay: 0.16s; }
.fi.delay-3 { transition-delay: 0.24s; }
.fi.delay-4 { transition-delay: 0.32s; }

/* ============================================================
   Top Page — 参加要件チェック
   ============================================================ */
.prereq-check-section {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 32px;
}
.prereq-check-title {
  font-size: 1.05rem; font-weight: 700;
  color: var(--text); margin: 0 0 6px;
}
.prereq-check-desc {
  font-size: 0.875rem; color: var(--text-sub);
  margin: 0 0 20px; line-height: 1.7;
}
.prereq-list {
  list-style: none;
  display: flex; flex-direction: column; gap: 10px;
  margin: 0 0 20px; padding: 0;
}
.prereq-list-item {
  display: flex; align-items: center; gap: 12px;
  font-size: 0.925rem; color: var(--text);
}
.prereq-list-item .material-icons {
  font-size: 20px; color: var(--primary); flex-shrink: 0;
}
.prereq-archive-link {
  display: flex; align-items: center; gap: 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
}
.prereq-archive-link-text {
  flex: 1;
}
.prereq-archive-link-text p {
  font-size: 0.82rem; color: var(--text-sub); margin: 0; line-height: 1.6;
}
.prereq-archive-link-text strong {
  font-size: 0.88rem; color: var(--text); display: block; margin-bottom: 2px;
}

/* ============================================================
   Top Page — Goal Comparison
   ============================================================ */
.goal-compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.goal-compare-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.goal-compare-header {
  padding: 18px 24px 16px;
  background: linear-gradient(140deg, #F0EBE4 0%, #E8E0D8 100%);
  border-bottom: 1px solid var(--border);
}
.goal-compare-header--practical {
  background: linear-gradient(140deg, #C96A3A 0%, #A0481F 100%);
}
.goal-compare-label {
  font-size: 0.72rem; font-weight: 800; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--text-sub); margin-bottom: 4px;
  display: block;
}
.goal-compare-header--practical .goal-compare-label { color: rgba(255,255,255,0.75); }
.goal-compare-header-title {
  font-size: 1.1rem; font-weight: 700; color: var(--text);
  margin: 0; line-height: 1.3;
}
.goal-compare-header--practical .goal-compare-header-title { color: #fff; }
.goal-compare-body { padding: 20px 24px; }
.goal-list {
  list-style: none; display: flex; flex-direction: column; gap: 8px;
  margin: 0; padding: 0;
}
.goal-list li {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 0.875rem; color: var(--text); line-height: 1.6;
}
.goal-list li .material-icons { font-size: 16px; color: var(--primary); flex-shrink: 0; margin-top: 3px; }
.goal-compare-card--practical .goal-list li .material-icons { color: var(--accent); }

/* ============================================================
   Top Page — Schedule Cards
   ============================================================ */
.schedule-day-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.schedule-day-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column;
  transition: transform 0.22s, box-shadow 0.22s;
  cursor: pointer;
}
.schedule-day-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.schedule-day-header {
  padding: 20px 22px 18px;
  background: linear-gradient(140deg, #C96A3A 0%, #A0481F 100%);
  position: relative; overflow: hidden;
}
.schedule-day-header::after {
  content: attr(data-day-num);
  position: absolute; right: 8px; bottom: -12px;
  font-size: 5rem; font-weight: 900; line-height: 1;
  color: rgba(255,255,255,0.13);
  font-family: 'Inter', sans-serif;
  pointer-events: none; user-select: none;
}
.schedule-day-header--2 { background: linear-gradient(140deg, #D47A50 0%, #B05530 100%); }
.schedule-day-header--3 { background: linear-gradient(140deg, #B05030 0%, #8C3810 100%); }
.day-num-badge {
  display: inline-block;
  font-size: 0.75rem; font-weight: 800; letter-spacing: 0.15em;
  text-transform: uppercase; color: #fff;
  background: rgba(255,255,255,0.18);
  border: 1.5px solid rgba(255,255,255,0.45);
  padding: 3px 12px; border-radius: 50px; margin-bottom: 10px;
}
.schedule-day-title {
  font-size: 1.05rem; font-weight: 700; color: #fff;
  margin: 0; line-height: 1.3; word-break: keep-all;
}
.schedule-day-body { padding: 18px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.schedule-day-desc {
  font-size: 0.85rem; color: var(--text-sub);
  line-height: 1.7; flex: 1; margin-bottom: 16px;
}
.schedule-day-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 20px; border-radius: 50px;
  background: var(--primary); color: #fff;
  font-size: 0.85rem; font-weight: 600;
  cursor: pointer; border: none; font-family: inherit;
  transition: background 0.2s, transform 0.2s;
  width: 100%;
}
.schedule-day-btn:hover { background: var(--primary-dark); transform: translateY(-1px); }
.schedule-day-btn .material-icons { font-size: 16px; }

/* ============================================================
   DAY Pages — Hero + Checklist
   ============================================================ */
.day-hero-section {
  background: var(--bg);
  padding: 40px 0 36px;
}
.day-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px; align-items: start;
}
.day-hero-thumb { position: relative; display: block; }
.day-hero-badge-wrap {
  position: relative;
  border-radius: var(--radius); overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  width: 100%; aspect-ratio: 16/9;
  background: #1C1410;
  display: flex; align-items: center; justify-content: center;
}
.day-hero-placeholder {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.day-hero-placeholder .material-icons { font-size: 48px; color: rgba(255,255,255,0.3); }
.day-hero-placeholder p { font-size: 0.85rem; color: rgba(255,255,255,0.4); }
.day-hero-badge {
  position: absolute; top: 14px; left: 14px;
  background: linear-gradient(150deg, #D06030 0%, #AA4418 100%);
  color: #fff; font-size: 0.88rem; font-weight: 800;
  letter-spacing: 0.18em; text-transform: uppercase;
  padding: 6px 18px; border-radius: 50px;
  box-shadow: 0 3px 12px rgba(160,60,20,0.45);
}
.day-hero-badge--2 { background: linear-gradient(150deg, #B8542A 0%, #8C3A12 100%); }
.day-hero-badge--3 { background: linear-gradient(150deg, #8C3A12 0%, #6E2808 100%); }
.day-hero-checklist-wrap { display: flex; flex-direction: column; }
.day-checklist-card {
  background: var(--white); border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius); padding: 28px 32px 32px;
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: 0; flex: 1;
}
.day-checklist-card .section-label { margin-bottom: 6px; }
.day-hero-heading {
  font-size: clamp(1.1rem, 1.8vw, 1.3rem); font-weight: 700;
  color: var(--text); line-height: 1.35; margin: 0 0 20px; word-break: keep-all;
}
.day-checklist { list-style: none; display: flex; flex-direction: column; gap: 12px; margin: 0; padding: 0; }
.day-checklist-item {
  display: flex; align-items: center;
  font-size: 0.95rem; color: var(--text); font-weight: 500; line-height: 1.5;
}
.day-check-label {
  display: flex; align-items: center; gap: 12px;
  cursor: pointer; padding: 8px 0; user-select: none; width: 100%;
}
.day-check-input { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
.day-check-custom {
  flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%;
  border: 2px solid rgba(217,119,87,0.55); background: #fff;
  transition: background 0.18s, border-color 0.18s, transform 0.12s;
  display: flex; align-items: center; justify-content: center;
}
.day-check-custom::after {
  content: ''; display: block;
  width: 7px; height: 12px;
  border-right: 2.5px solid #fff; border-bottom: 2.5px solid #fff;
  transform: rotate(45deg) translate(-1px,-2px);
  opacity: 0; transition: opacity 0.15s;
}
.day-check-input:checked + .day-check-custom {
  background: linear-gradient(135deg, #D06030 0%, #A03810 100%);
  border-color: transparent; transform: scale(1.08);
}
.day-check-input:checked + .day-check-custom::after { opacity: 1; }
.day-check-text { font-size: 0.95rem; color: var(--text); transition: color 0.18s, text-decoration 0.18s; line-height: 1.5; }
.day-check-input:checked ~ .day-check-text { color: var(--text-sub); text-decoration: line-through; }
.day-check-label:hover .day-check-custom { border-color: var(--primary); }
.day-hero-note { font-size: 0.8rem; color: var(--text-muted); margin: 14px 0 0; padding-top: 14px; border-top: 1px solid var(--border); line-height: 1.6; }

/* Checklist complete */
.day-checklist-complete {
  display: flex; align-items: flex-start; gap: 14px;
  margin-top: 20px; padding: 18px 20px;
  background: linear-gradient(135deg, #FFF3EB 0%, #FEE8D6 100%);
  border: 1.5px solid rgba(208,96,48,0.28);
  border-radius: var(--radius);
  box-shadow: 0 4px 18px rgba(208,96,48,0.14);
  animation: fadeSlideIn 0.32s ease;
}
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.day-complete-icon { font-size: 1.8rem; line-height: 1; flex-shrink: 0; }
.day-complete-body { display: flex; flex-direction: column; gap: 4px; }
.day-complete-title { font-size: 0.95rem; font-weight: 700; color: var(--accent-dark); }
.day-complete-text { font-size: 0.85rem; color: var(--text-sub); line-height: 1.65; margin: 0; }

/* ============================================================
   DAY Pages — Step Sections
   ============================================================ */
.day-step-group { padding: 4px 0 0; }
.day-step-badge {
  display: inline-flex; align-items: center;
  font-size: 0.75rem; font-weight: 800; letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 4px 14px; border-radius: 50px; margin-bottom: 14px;
}
.day-step-badge--0 { background: var(--primary-light); color: var(--primary); border: 1.5px solid rgba(217,119,87,0.3); }
.day-step-badge--1 { background: rgba(217,119,87,0.12); color: var(--accent); border: 1.5px solid rgba(201,107,58,0.3); }
.day-step-badge--2 { background: rgba(160,73,30,0.1); color: var(--accent-dark); border: 1.5px solid rgba(160,73,30,0.25); }
.day-step-badge--3 { background: rgba(140,58,18,0.1); color: #8C3A12; border: 1.5px solid rgba(140,58,18,0.2); }
.day-step-title {
  font-size: clamp(1.2rem, 2.2vw, 1.55rem);
  font-weight: 700; color: var(--text);
  margin: 0 0 10px; line-height: 1.35; word-break: keep-all;
}
.day-step-desc {
  font-size: 0.9rem; color: var(--text-sub);
  max-width: 560px; line-height: 1.75; margin: 0 0 22px;
}

/* ============================================================
   DAY Pages — Archive Video Section
   ============================================================ */
.archive-video-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px 28px;
  box-shadow: var(--shadow-sm);
  display: flex; align-items: center; gap: 20px;
}
.archive-video-icon {
  width: 56px; height: 56px; border-radius: var(--radius-sm);
  background: var(--primary-light);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.archive-video-icon .material-icons { font-size: 28px; color: var(--primary); }
.archive-video-body { flex: 1; }
.archive-video-body h3 { font-size: 1rem; font-weight: 700; margin: 0 0 6px; }
.archive-video-body p { font-size: 0.875rem; color: var(--text-sub); margin: 0; line-height: 1.65; }
.archive-video-action { flex-shrink: 0; }

/* ============================================================
   DAY Pages — Materials Section
   ============================================================ */
.materials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.material-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  display: flex; align-items: center; gap: 14px;
}
.material-icon {
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  background: var(--primary-light);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.material-icon .material-icons { font-size: 20px; color: var(--primary); }
.material-body { flex: 1; min-width: 0; }
.material-body h4 { font-size: 0.9rem; font-weight: 700; margin: 0 0 3px; }
.material-body p { font-size: 0.8rem; color: var(--text-sub); margin: 0; line-height: 1.5; }
.material-action { flex-shrink: 0; }

/* ============================================================
   DAY Pages — Q&A Section
   ============================================================ */
.qa-placeholder {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px 32px;
  text-align: center; box-shadow: var(--shadow-sm);
}
.qa-placeholder .material-icons { font-size: 40px; color: var(--text-muted); opacity: 0.4; margin-bottom: 12px; display: block; margin-left: auto; margin-right: auto; }
.qa-placeholder p { font-size: 0.875rem; color: var(--text-sub); margin: 0; }

/* ============================================================
   DAY3 — 判断ワーク
   ============================================================ */
.handan-work-card {
  background: linear-gradient(135deg, #1C1410 0%, #2D1F18 100%);
  border-radius: var(--radius);
  padding: 36px 40px;
  box-shadow: 0 8px 32px rgba(28,20,16,0.28);
  display: flex; align-items: flex-start; gap: 28px;
  position: relative; overflow: hidden;
}
.handan-work-card::before {
  content: '';
  position: absolute; top: -60px; right: -60px;
  width: 200px; height: 200px; border-radius: 50%;
  background: rgba(217,119,87,0.12); filter: blur(50px);
}
.handan-work-icon {
  width: 64px; height: 64px; border-radius: var(--radius-sm);
  background: rgba(217,119,87,0.18);
  border: 1.5px solid rgba(217,119,87,0.35);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.handan-work-icon .material-icons { font-size: 32px; color: var(--primary); }
.handan-work-body { flex: 1; }
.handan-work-badge {
  display: inline-block;
  font-size: 0.68rem; font-weight: 800; letter-spacing: 0.14em;
  text-transform: uppercase;
  background: rgba(217,119,87,0.18); color: var(--primary);
  border: 1px solid rgba(217,119,87,0.35);
  padding: 3px 12px; border-radius: 50px; margin-bottom: 12px;
}
.handan-work-title {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 700; color: #fff;
  margin: 0 0 10px; line-height: 1.35; word-break: keep-all;
}
.handan-work-desc {
  font-size: 0.875rem; color: rgba(255,255,255,0.65);
  line-height: 1.75; margin: 0 0 18px;
}
.handan-work-list {
  list-style: none; display: flex; flex-direction: column; gap: 6px;
  margin: 0 0 22px; padding: 0;
}
.handan-work-list li {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.85rem; color: rgba(255,255,255,0.75);
}
.handan-work-list li .material-icons { font-size: 16px; color: var(--primary); flex-shrink: 0; }
.handan-work-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 50px;
  background: linear-gradient(150deg, #D06030 0%, #AA4418 100%);
  color: #fff; font-size: 0.9rem; font-weight: 700;
  cursor: pointer; border: none; font-family: inherit;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(160,60,20,0.45), inset 0 1px 0 rgba(255,255,255,0.18);
}
.handan-work-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(160,60,20,0.55), inset 0 1px 0 rgba(255,255,255,0.18);
  text-decoration: none; color: #fff;
}
.handan-work-btn .material-icons { font-size: 18px; }

/* ============================================================
   関連ウェビナー
   ============================================================ */
.webinar-category { margin-bottom: 48px; }
.webinar-category:last-child { margin-bottom: 0; }
.webinar-cat-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 16px; padding-bottom: 14px;
  border-bottom: 2px solid var(--primary-light);
}
.webinar-cat-icon { font-size: 22px; color: var(--primary); flex-shrink: 0; }
.webinar-cat-title {
  font-size: 1rem; font-weight: 700; color: var(--text); margin: 0;
}
.webinar-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 20px 24px; margin-bottom: 10px;
  display: flex; align-items: flex-start; justify-content: space-between; gap: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}
.webinar-card:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.webinar-card-body { flex: 1; min-width: 0; }
.webinar-card-title {
  font-size: 0.95rem; font-weight: 600; color: var(--text);
  line-height: 1.6; margin: 0 0 6px; word-break: keep-all;
}
.webinar-card-desc { font-size: 0.85rem; color: var(--text-sub); margin: 0; line-height: 1.6; }
.webinar-card-action { flex-shrink: 0; align-self: center; }
.webinar-preparing {
  font-size: 0.78rem; color: var(--text-muted);
  background: var(--bg-dark); border-radius: var(--radius-sm);
  padding: 5px 12px; display: inline-block;
}

/* ============================================================
   Notice Block
   ============================================================ */
.notice-block {
  display: flex; align-items: flex-start; gap: 14px;
  background: var(--white); border: 1px solid var(--primary);
  border-left: 4px solid var(--primary); border-radius: 10px;
  padding: 18px 22px; margin-bottom: 32px;
  box-shadow: 0 2px 10px rgba(217,119,87,0.1);
}
.notice-block-icon { color: var(--primary); font-size: 22px; flex-shrink: 0; margin-top: 2px; }
.notice-block-body { flex: 1; }
.notice-block-title {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--primary); margin-bottom: 6px;
}
.notice-block-text { font-size: 0.875rem; color: var(--text-sub); line-height: 1.75; margin: 0; }

/* ============================================================
   Recommended Style
   ============================================================ */
.recommended-style {
  display: flex; align-items: center; gap: 14px;
  background: linear-gradient(135deg, #FDF5EE 0%, #FAF0E6 100%);
  border: 1.5px solid rgba(217,119,87,0.22);
  border-left: 4px solid var(--primary); border-radius: var(--radius-sm);
  padding: 16px 20px; margin-top: 32px;
  box-shadow: 0 2px 10px rgba(217,119,87,0.08);
}
.recommended-style-emoji { font-size: 1.5rem; flex-shrink: 0; line-height: 1; }
.recommended-style-title { font-size: 0.85rem; font-weight: 700; color: var(--accent-dark); }
.recommended-style-text { font-size: 0.85rem; color: var(--text-sub); line-height: 1.65; }

/* ============================================================
   Day Sub Category
   ============================================================ */
.day-sub-category { margin-top: 32px; }
.day-sub-title {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.95rem; font-weight: 700; color: var(--text);
  margin: 0 0 6px;
}
.day-sub-title .material-icons { font-size: 20px; color: var(--primary); }
.day-sub-desc {
  font-size: 0.85rem; color: var(--text-sub);
  margin: 0 0 16px; line-height: 1.65;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .goal-compare-grid { grid-template-columns: 1fr; }
  .schedule-day-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .day-hero { grid-template-columns: 1fr; gap: 24px; align-items: flex-start; }
  .day-hero-thumb { max-width: 480px; margin: 0 auto; width: 100%; }
  .handan-work-card { flex-direction: column; gap: 20px; padding: 28px 24px; }
}
@media (max-width: 768px) {
  .nav-tabs { display: none; }
  .hero { padding: 72px 16px 28px; }
  section { padding: 48px 0; }
  .section-inner { padding: 0 16px; }
  .card-grid-2, .card-grid-3 { grid-template-columns: 1fr; }
  .schedule-day-grid { grid-template-columns: 1fr; }
  .materials-grid { grid-template-columns: 1fr; }
  .archive-video-card { flex-direction: column; gap: 14px; }
  .webinar-card { flex-direction: column; gap: 14px; padding: 16px; }
  .webinar-card-action { align-self: flex-start; }
  .prereq-archive-link { flex-direction: column; gap: 10px; }
  .day-checklist-card { padding: 22px 24px 24px; }
  .day-hero-section { padding: 28px 0 24px; }
}
@media (max-width: 540px) {
  .tab-nav { gap: 4px !important; padding: 6px 10px !important; }
  .tab-btn { padding: 8px 12px !important; font-size: 0.78rem !important; border-radius: 8px !important; }
  .tab-btn .tab-label { display: none; }
}
@media (max-width: 480px) {
  .prereq-check-section { padding: 20px 18px; }
  .goal-compare-body { padding: 16px 18px; }
  .goal-compare-header { padding: 14px 18px 12px; }
  .handan-work-card { padding: 24px 18px; }
}