/* LMS — Design System
   Inspired by syllabus thumbnails:
   White base, geometric circles/dots, difficulty-based accent colors,
   clean typography, modern minimal aesthetic.
   ============================================================ */

/* ============================================================
   Custom Properties
   ============================================================ */
:root {
  /* Difficulty accent colors (from thumbnails) */
  --as-lv1: #2dd4bf;          /* 入門: teal */
  --as-lv1-light: #ccfbf1;
  --as-lv2: #6366f1;          /* 初級: indigo */
  --as-lv2-light: #e0e7ff;
  --as-lv3: #e11d48;          /* 中級: rose */
  --as-lv3-light: #ffe4e6;
  --as-lv4: #3b82f6;          /* 中上級: blue */
  --as-lv4-light: #dbeafe;
  --as-lv5: #a855f7;          /* 上級: purple */
  --as-lv5-light: #f3e8ff;

  /* Core palette */
  --as-primary: #6366f1;
  --as-primary-hover: #4f46e5;
  --as-primary-light: #eef2ff;
  --as-success: #10b981;
  --as-success-light: #d1fae5;
  --as-danger: #ef4444;
  --as-danger-light: #fee2e2;
  --as-warning: #f59e0b;
  --as-warning-light: #fef3c7;

  /* Neutrals */
  --as-900: #0f172a;
  --as-800: #1e293b;
  --as-700: #334155;
  --as-600: #475569;
  --as-500: #64748b;
  --as-400: #94a3b8;
  --as-300: #cbd5e1;
  --as-200: #e2e8f0;
  --as-100: #f1f5f9;
  --as-50: #f8fafc;
  --as-white: #ffffff;

  /* Spacing & Shape */
  --as-radius: 12px;
  --as-radius-sm: 6px;
  --as-radius-lg: 16px;
  --as-shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --as-shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --as-shadow-md: 0 4px 12px rgba(0,0,0,.08);
  --as-shadow-lg: 0 8px 24px rgba(0,0,0,.1);

  /* Typography */
  --as-font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --as-font-mono: "SF Mono", "Fira Code", "Consolas", monospace;
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--as-font);
  color: var(--as-800);
  background: var(--as-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: var(--as-primary); text-decoration: none; }
a:hover { color: var(--as-primary-hover); }
img { max-width: 100%; height: auto; display: block; }
hr { border: none; border-top: 1px solid var(--as-200); margin: 32px 0; }

/* ============================================================
   Header
   ============================================================ */
.as-header {
  position: sticky; top: 0; z-index: 100;
  height: 60px;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--as-200);
}
.as-header__inner {
  display: flex; align-items: center; gap: 24px;
  height: 100%; max-width: 1200px; margin: 0 auto; padding: 0 32px;
}
.as-header__logo {
  font-size: 1.25rem; font-weight: 800; letter-spacing: .02em;
  text-decoration: none; flex-shrink: 0;
}
.as-header__logo-text {
  background: linear-gradient(135deg, var(--as-lv1), var(--as-lv2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.as-header__super-link {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: .75rem; font-weight: 600; color: var(--as-lv5);
  text-decoration: none; padding: 4px 10px;
  border: 1px solid var(--as-lv5-light); border-radius: 9999px;
  background: var(--as-lv5-light); transition: all .15s;
}
.as-header__super-link:hover { background: var(--as-lv5); color: #fff; }
.as-header__user {
  display: flex; align-items: center; gap: 16px;
  font-size: .8125rem; color: var(--as-500); margin-left: auto;
}
.as-header__username { font-weight: 500; color: var(--as-700); }

/* Notification bell */
.as-notif { position: relative; }
.as-notif__bell {
  position: relative; background: none; border: none; cursor: pointer;
  color: var(--as-500); padding: 4px; border-radius: 6px; transition: color .15s, background .15s;
}
.as-notif__bell:hover { color: var(--as-700); background: var(--as-100); }
.as-notif__count {
  position: absolute; top: -2px; right: -4px;
  min-width: 16px; height: 16px; padding: 0 4px;
  background: var(--as-danger); color: #fff; font-size: .625rem; font-weight: 700;
  border-radius: 999px; display: flex; align-items: center; justify-content: center;
  line-height: 1;
}
.as-notif__dropdown {
  position: absolute; top: 100%; right: 0; margin-top: 8px;
  width: 340px; max-height: 420px; overflow-y: auto;
  background: var(--as-white); border: 1px solid var(--as-200);
  border-radius: var(--as-radius); box-shadow: var(--as-shadow-lg);
  z-index: 1000; animation: asSlideIn .2s ease;
}
.as-notif__header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--as-100);
}
.as-notif__header-title { font-size: .8125rem; font-weight: 700; color: var(--as-800); }
.as-notif__mark-all {
  background: none; border: none; cursor: pointer;
  font-size: .6875rem; color: var(--as-primary); font-weight: 600;
}
.as-notif__mark-all:hover { text-decoration: underline; }
.as-notif__list { }
.as-notif__empty { padding: 32px 16px; text-align: center; font-size: .8125rem; color: var(--as-400); }
.as-notif__item {
  display: flex; gap: 10px; padding: 12px 16px;
  text-decoration: none; color: inherit; transition: background .15s;
  border-bottom: 1px solid var(--as-50);
}
.as-notif__item:hover { background: var(--as-50); }
.as-notif__item--unread { background: var(--as-primary-light); }
.as-notif__item--unread:hover { background: #e0e7ff; }
.as-notif__icon { flex-shrink: 0; padding-top: 2px; }
.as-notif__body { flex: 1; min-width: 0; }
.as-notif__title { font-size: .8125rem; font-weight: 600; color: var(--as-900); }
.as-notif__message { font-size: .75rem; color: var(--as-500); margin-top: 2px; line-height: 1.5; }
.as-notif__time { font-size: .6875rem; color: var(--as-400); margin-top: 4px; }

.as-header__logout {
  display: inline-flex; align-items: center; gap: 4px;
  color: var(--as-500); text-decoration: none; font-size: .75rem; transition: color .15s;
}
.as-header__logout:hover { color: var(--as-danger); }

/* ============================================================
   Navigation
   ============================================================ */
.as-nav { display: flex; align-items: center; }
.as-nav__list { display: flex; list-style: none; gap: 2px; margin: 0; padding: 0; }
.as-nav__item { display: flex; }
.as-nav__link {
  display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px;
  font-size: .8125rem; font-weight: 500; color: var(--as-500);
  text-decoration: none; border-radius: var(--as-radius-sm); transition: all .15s;
}
.as-nav__link:hover { color: var(--as-800); background: var(--as-50); }
.as-nav__item--active .as-nav__link { color: var(--as-primary); background: var(--as-primary-light); font-weight: 600; }
.as-nav__icon { display: inline-flex; align-items: center; flex-shrink: 0; }
.as-nav__label { white-space: nowrap; }

/* ============================================================
   Layout
   ============================================================ */
.as-main { min-height: calc(100vh - 60px); background: var(--as-50); }
.as-container { max-width: 1200px; margin: 0 auto; padding: 32px 24px; }
.as-footer {
  background: var(--as-white); border-top: 1px solid var(--as-100);
}
.as-footer__inner {
  display: flex; align-items: center; justify-content: center;
  max-width: 1200px; margin: 0 auto; padding: 20px 32px;
}
.as-footer__copyright {
  font-size: .75rem; color: var(--as-400); letter-spacing: .04em;
}

/* ============================================================
   Page Title
   ============================================================ */
.as-page-title { font-size: 1.5rem; font-weight: 800; color: var(--as-900); margin-bottom: 8px; }
.as-page-subtitle { font-size: .9rem; color: var(--as-500); margin-bottom: 32px; }

/* ============================================================
   Breadcrumb
   ============================================================ */
.as-breadcrumb {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  font-size: .8125rem; color: var(--as-400); margin-bottom: 24px;
}
.as-breadcrumb a { color: var(--as-500); text-decoration: none; transition: color .15s; }
.as-breadcrumb a:hover { color: var(--as-primary); }
.as-breadcrumb span { color: var(--as-700); font-weight: 600; }
.as-breadcrumb svg { flex-shrink: 0; opacity: .5; }

/* ============================================================
   Section Title
   ============================================================ */
.as-section { margin-top: 40px; }
.as-section-title {
  display: flex; align-items: center; gap: 8px;
  font-size: 1.125rem; font-weight: 700; color: var(--as-900);
  margin-bottom: 16px;
}

/* ============================================================
   Category Header (single page)
   ============================================================ */
.as-category-header {
  display: flex; gap: 32px; align-items: flex-start;
  background: var(--as-white); border-radius: var(--as-radius-lg);
  padding: 28px; margin-bottom: 40px;
  border: 1px solid var(--as-100); box-shadow: var(--as-shadow-sm);
}
.as-category-header--vertical {
  flex-direction: column; gap: 16px; align-items: stretch;
}
.as-category-header--vertical .as-category-header__thumb {
  width: 100%; max-width: 100%; border-radius: var(--as-radius);
  overflow: hidden; background: var(--as-100);
}
.as-category-header--vertical .as-category-header__thumb {
  position: relative; width: 100%; padding-top: 56.25%; /* 16:9 */
}
.as-category-header--vertical .as-category-header__thumb img {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.as-category-header__thumb {
  width: 280px; flex-shrink: 0; border-radius: var(--as-radius);
  overflow: hidden; background: var(--as-100);
}
.as-category-header__thumb img { width: 100%; height: auto; display: block; }
.as-category-header__info { flex: 1; }
.as-category-header__meta {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  margin-bottom: 16px;
}
.as-category-header__hours {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: .8125rem; color: var(--as-500);
}
.as-category-header__description {
  font-size: .9rem; line-height: 1.8; color: var(--as-600); margin-top: 12px;
}

/* ============================================================
   Course Header (detail page)
   ============================================================ */
.as-course-header {
  display: flex; gap: 32px; align-items: flex-start;
  background: var(--as-white); border-radius: var(--as-radius-lg);
  padding: 28px; margin-bottom: 40px;
  border: 1px solid var(--as-100); box-shadow: var(--as-shadow-sm);
}
.as-course-header--vertical {
  flex-direction: column; gap: 16px; align-items: stretch;
}
.as-course-header--vertical .as-course-header__thumb {
  position: relative; width: 100%; padding-top: 56.25%; /* 16:9 */
}
.as-course-header--vertical .as-course-header__thumb img {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.as-course-header__thumb {
  width: 320px; flex-shrink: 0; border-radius: var(--as-radius);
  overflow: hidden; background: var(--as-100);
}
.as-course-header__thumb img { width: 100%; height: auto; display: block; }
.as-course-header__info { flex: 1; }
.as-course-header__meta {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  margin-bottom: 16px;
}
.as-course-header__hours {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: .8125rem; color: var(--as-500);
}
.as-course-header__description {
  font-size: .9rem; line-height: 1.8; color: var(--as-600); margin-top: 12px;
}
.as-course-header__actions {
  display: flex; align-items: center; gap: 10px; margin-top: 16px; flex-wrap: wrap;
}
.as-course-header__progress-inline {
  display: flex; align-items: center; gap: 8px;
}

/* ============================================================
   Prerequisites
   ============================================================ */
.as-prerequisites { margin-top: 32px; }
.as-prerequisites__list { display: flex; gap: 8px; flex-wrap: wrap; }

/* ============================================================
   Category Card extras
   ============================================================ */
.as-category-card__number {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  font-size: .875rem; font-weight: 800; min-width: 32px; text-align: center;
}
.as-category-card__desc {
  font-size: .8125rem; color: var(--as-500); line-height: 1.6;
  margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.as-category-card__count {
  display: block; font-size: .75rem; color: var(--as-400); margin-top: 8px;
}

/* Coming soon states */
.as-category-card--coming-soon { opacity: .6; }
.as-category-card--coming-soon:hover { opacity: .8; }
.as-category-card__coming-soon {
  position: absolute; bottom: 8px; right: 8px;
  background: rgba(15,23,42,.7); color: #fff; font-size: .625rem; font-weight: 700;
  padding: 3px 8px; border-radius: 999px; letter-spacing: .04em;
}
.as-course-card--coming-soon { opacity: .55; }
.as-course-card__coming-soon-overlay {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(15,23,42,.4); color: #fff; font-size: .75rem; font-weight: 700;
  letter-spacing: .06em; border-radius: var(--as-radius) var(--as-radius) 0 0;
}
.as-category-card__thumbnail, .as-course-card__thumbnail { position: relative; overflow: hidden; }
.as-category-card__hours {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: .75rem; color: var(--as-500);
}

/* ============================================================
   Related Courses
   ============================================================ */
.as-related-group { margin-bottom: 20px; }
.as-related-group__title {
  display: flex; align-items: center; gap: 6px;
  font-size: .9375rem; font-weight: 600; color: var(--as-700); margin-bottom: 10px;
}
.as-related-group__list { list-style: none; padding: 0; }
.as-related-group__list li { margin-bottom: 4px; }
.as-related-group__link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .875rem; color: var(--as-primary); text-decoration: none;
  padding: 6px 0; transition: color .15s;
}
.as-related-group__link:hover { color: var(--as-primary-hover); }

/* ============================================================
   Chapter List (course detail)
   ============================================================ */
.as-chapter-list { display: flex; flex-direction: column; gap: 2px; }
.as-chapter-list__item {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 20px; background: var(--as-white);
  border: 1px solid var(--as-100); border-radius: var(--as-radius-sm);
  text-decoration: none; color: inherit; transition: all .15s;
}
.as-chapter-list__item:hover { border-color: var(--as-primary); background: var(--as-primary-light); }
.as-chapter-list__number {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--as-100); font-size: .75rem; font-weight: 700; color: var(--as-600); flex-shrink: 0;
}
.as-chapter-list__title { flex: 1; font-size: .875rem; font-weight: 500; color: var(--as-800); }
.as-chapter-list__duration {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: .75rem; color: var(--as-400); flex-shrink: 0;
}

/* ============================================================
   Enrollment & Progress Bar
   ============================================================ */
.as-enrollment {
  margin-top: 40px; padding: 28px;
  background: var(--as-white); border-radius: var(--as-radius-lg);
  border: 1px solid var(--as-100); text-align: center;
}
.as-enrollment__progress { margin-bottom: 20px; }
.as-progress-bar {
  width: 100%; height: 8px; background: var(--as-100);
  border-radius: 9999px; overflow: hidden; margin-bottom: 8px;
}
.as-progress-bar__fill {
  height: 100%; background: linear-gradient(90deg, var(--as-primary), var(--as-success));
  border-radius: 9999px; transition: width .4s ease;
}
.as-progress-bar__label { font-size: .8125rem; color: var(--as-500); }

/* ============================================================
   Empty & misc
   ============================================================ */
.as-empty-message { color: var(--as-400); font-size: .9rem; padding: 24px 0; }

/* ============================================================
   Quiz passed banner
   ============================================================ */
.as-quiz-passed-banner {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 20px; margin-bottom: 24px;
  background: var(--as-success-light); color: #047857;
  border: 1px solid #a7f3d0; border-radius: var(--as-radius);
  font-size: .875rem; font-weight: 600;
}
.as-quiz__back { margin-top: 32px; }
.as-quiz-form__actions { margin-top: 24px; }
.as-form__textarea {
  width: 100%; padding: 12px 16px; font-size: .875rem; font-family: var(--as-font);
  border: 1px solid var(--as-200); border-radius: var(--as-radius-sm);
  resize: vertical; line-height: 1.7; transition: border-color .15s;
}
.as-form__textarea:focus { outline: none; border-color: var(--as-primary); box-shadow: 0 0 0 3px rgba(99,102,241,.1); }

/* ============================================================
   Learn sidebar extras
   ============================================================ */
.as-learn__check-icon { color: var(--as-success); flex-shrink: 0; }
.as-learn__chapter-number {
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--as-200); font-size: .6875rem; font-weight: 700; color: var(--as-500); flex-shrink: 0;
}
.as-learn__chapter-label { flex: 1; }
.as-chapter-objective {
  margin: 20px 0 28px; padding: 20px; background: var(--as-primary-light);
  border-radius: var(--as-radius);
}
.as-chapter-objective p { font-size: .9rem; color: var(--as-700); line-height: 1.7; margin-top: 8px; }
.as-chapter-actions {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--as-100);
}

/* ============================================================
   Cards & Grid
   ============================================================ */
.as-category-grid, .as-course-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.as-category-card, .as-course-card {
  background: var(--as-white); border-radius: var(--as-radius); overflow: hidden;
  border: 1px solid var(--as-100); text-decoration: none; color: inherit;
  transition: all .2s ease;
}
.as-category-card:hover, .as-course-card:hover {
  border-color: var(--as-200); box-shadow: var(--as-shadow-md); transform: translateY(-3px);
}
.as-category-card__thumbnail, .as-course-card__thumbnail {
  position: relative; width: 100%; padding-top: 56.25%; overflow: hidden; background: var(--as-100);
}
.as-category-card__thumbnail img, .as-course-card__thumbnail img {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover;
}
.as-category-card__body, .as-course-card__body { padding: 16px 20px; }
.as-category-card__title, .as-course-card__title {
  font-size: .9375rem; font-weight: 700; color: var(--as-900); margin-bottom: 8px; line-height: 1.4;
}
.as-category-card__desc, .as-course-card__desc {
  font-size: .8125rem; line-height: 1.7; color: var(--as-500); margin-bottom: 10px;
}
.as-category-card__meta, .as-course-card__meta {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: .75rem; color: var(--as-500);
}
.as-course-card__chapters {
  display: inline-flex; align-items: center; gap: 4px; font-size: .6875rem; color: var(--as-400);
}
.as-course-card__link {
  display: block; text-decoration: none; color: inherit;
}
.as-course-card__name { font-size: .9375rem; font-weight: 700; color: var(--as-900); margin-bottom: 8px; line-height: 1.4; }
.as-course-card__hours {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: .75rem; color: var(--as-500); margin-top: 8px;
}

/* Chapter card grid (course detail page) */
.as-chapter-card-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px;
}
.as-chapter-card {
  display: flex; flex-direction: column;
  background: var(--as-white); border-radius: var(--as-radius);
  border: 1px solid var(--as-100); overflow: hidden;
  text-decoration: none; color: inherit;
  transition: all .3s cubic-bezier(.25,.8,.25,1);
}
.as-chapter-card:hover {
  transform: translateY(-4px); box-shadow: var(--as-shadow-lg);
  border-color: var(--as-200);
}
.as-chapter-card__thumb {
  position: relative; width: 100%; padding-top: 56.25%; /* 16:9 */
  background: var(--as-100); overflow: hidden;
}
.as-chapter-card__thumb img {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .4s;
}
.as-chapter-card:hover .as-chapter-card__thumb img { transform: scale(1.05); }
.as-chapter-card__thumb--fallback {
  background: linear-gradient(135deg, var(--as-100), var(--as-50));
}
.as-chapter-card__thumb--fallback img { display: none; }
.as-chapter-card__number {
  position: absolute; top: 8px; left: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 8px;
  background: rgba(0,0,0,.5); color: #fff;
  font-size: .75rem; font-weight: 700;
  backdrop-filter: blur(4px);
}
.as-chapter-card__type {
  position: absolute; top: 8px; right: 8px;
}
.as-chapter-card__lock {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.6); backdrop-filter: blur(2px);
  color: var(--as-400);
}
.as-chapter-card__body { padding: 14px 16px; flex: 1; }
.as-chapter-card__title {
  font-size: .8125rem; font-weight: 600; color: var(--as-900);
  line-height: 1.4; margin-bottom: 4px;
}
.as-chapter-card__objective {
  font-size: .6875rem; line-height: 1.6; color: var(--as-500);
}

/* ============================================================
   Badges
   ============================================================ */
.as-badge {
  display: inline-flex; align-items: center; padding: 3px 10px;
  font-size: .6875rem; font-weight: 600; border-radius: 9999px;
  letter-spacing: .02em; white-space: nowrap;
}
.as-badge--both { background: var(--as-lv5-light); color: #7c3aed; }
.as-badge--worker { background: var(--as-lv2-light); color: #4338ca; }
.as-badge--company { background: var(--as-success-light); color: #047857; }
.as-badge--normal { background: var(--as-100); color: var(--as-500); }
.as-badge--success { background: var(--as-success-light); color: #047857; }
.as-badge--warning { background: var(--as-warning-light); color: #92400e; }
.as-badge--danger { background: var(--as-danger-light); color: #991b1b; }
.as-badge--ghost { background: var(--as-50); color: var(--as-300); }
.as-badge--skill_check { background: var(--as-warning-light); color: #92400e; }
.as-badge--practice { background: #fce7f3; color: #9d174d; }

/* Difficulty badges (thumbnail color system) */
.as-badge--difficulty-1 { background: var(--as-lv1-light); color: #0d9488; }
.as-badge--difficulty-2 { background: var(--as-lv2-light); color: #4338ca; }
.as-badge--difficulty-3 { background: var(--as-lv3-light); color: #be123c; }
.as-badge--difficulty-4 { background: var(--as-lv4-light); color: #1d4ed8; }
.as-badge--difficulty-5 { background: var(--as-lv5-light); color: #7c3aed; }

/* ============================================================
   Progress
   ============================================================ */
.as-progress { width: 100%; }
.as-progress__track { height: 6px; background: var(--as-200); border-radius: 9999px; overflow: hidden; }
.as-progress__bar { height: 100%; background: linear-gradient(90deg, var(--as-lv1), var(--as-lv2)); border-radius: 9999px; transition: width .5s ease; }
.as-progress__text { font-size: .75rem; color: var(--as-500); margin-top: 6px; }

/* ============================================================
   Stats
   ============================================================ */
.as-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; }
.as-stat-card {
  padding: 24px; background: var(--as-white); border: 1px solid var(--as-100);
  border-radius: var(--as-radius); text-align: center;
}
.as-stat-card__value { font-size: 2rem; font-weight: 800; color: var(--as-primary); }
.as-stat-card__label { font-size: .75rem; color: var(--as-500); margin-top: 4px; letter-spacing: .04em; }

/* ============================================================
   Learn Page
   ============================================================ */
.as-learn { display: flex; min-height: calc(100vh - 60px); background: var(--as-white); }
.as-learn__sidebar {
  width: 280px; flex-shrink: 0; background: var(--as-50);
  border-right: 1px solid var(--as-100); padding: 20px 0;
  position: sticky; top: 60px; height: calc(100vh - 60px); overflow-y: auto;
}
.as-learn__sidebar-title {
  padding: 0 20px 16px; font-size: .8125rem; font-weight: 700; color: var(--as-500);
  text-transform: uppercase; letter-spacing: .06em;
}
.as-learn__content { flex: 1; padding: 40px 48px; overflow-y: auto; }
.as-learn__chapter-list { list-style: none; }
.as-learn__chapter-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 20px; font-size: .8125rem; color: var(--as-600);
  text-decoration: none; border-radius: var(--as-radius-sm); transition: all .15s;
}
.as-learn__chapter-item:hover { background: var(--as-100); color: var(--as-800); }
.as-learn__chapter-item--active {
  background: var(--as-primary-light); color: var(--as-primary); font-weight: 600;
}
/* completed chapters use inline SVG icon, no ::before needed */

/* Learn page sidebar header */
.as-learn__sidebar-header { padding: 0 16px 16px; border-bottom: 1px solid var(--as-100); margin-bottom: 8px; }
.as-learn__sidebar-course { display: flex; align-items: center; gap: 12px; }
.as-learn__sidebar-thumb { width: 48px; height: 28px; border-radius: 4px; object-fit: cover; flex-shrink: 0; }
.as-learn__sidebar-title { font-size: .75rem; font-weight: 700; color: var(--as-800); line-height: 1.3; margin-bottom: 4px; }
.as-learn__sidebar-progress { display: flex; align-items: center; gap: 6px; }
.as-learn__sidebar-pct { font-size: .625rem; color: var(--as-400); flex-shrink: 0; }

/* Learn hero (chapter thumbnail) */
.as-learn__hero { margin-bottom: 24px; border-radius: var(--as-radius); overflow: hidden; }
.as-learn__hero img { width: 100%; height: auto; display: block; }

/* Learn header with bookmark */
.as-learn__header { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.as-learn__header-text { flex: 1; }
.as-learn__header .as-page-title { margin-bottom: 4px; }

/* Chapter objective */
.as-chapter-objective {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 16px 20px; margin-bottom: 24px;
  background: var(--as-primary-light); border-radius: var(--as-radius);
  font-size: .875rem; color: var(--as-700); line-height: 1.6;
}
.as-chapter-objective svg { flex-shrink: 0; color: var(--as-primary); margin-top: 2px; }

/* Chapter complete badge */
.as-chapter-complete-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 20px; font-size: .875rem; font-weight: 600;
  background: var(--as-success-light); color: #047857; border-radius: var(--as-radius-sm);
}

/* Chapter actions */
.as-chapter-actions {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  margin-top: 32px; padding-top: 24px;
}

/* Enrollment section */
.as-enrollment {
  padding: 28px; margin-top: 32px;
  background: var(--as-white); border-radius: var(--as-radius-lg);
  box-shadow: var(--as-shadow-sm);
}
.as-enrollment__status { }
.as-enrollment__progress-wrap { margin-bottom: 16px; }
.as-enrollment__actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.as-chapter-content { max-width: 100%; font-size: .9375rem; line-height: 1.9; color: var(--as-700); }
.as-chapter-content h1 { font-size: 1.5rem; font-weight: 800; color: var(--as-900); margin: 2em 0 .6em; }
.as-chapter-content h2 { font-size: 1.25rem; font-weight: 700; color: var(--as-900); margin: 1.6em 0 .5em; }
.as-chapter-content h3 { font-size: 1.05rem; font-weight: 700; color: var(--as-800); margin: 1.4em 0 .4em; }
.as-chapter-content p { margin-bottom: 1em; }
.as-chapter-content img { border-radius: var(--as-radius); margin: 1.5em 0; box-shadow: var(--as-shadow-sm); }
.as-chapter-content pre {
  background: var(--as-900); color: var(--as-300); padding: 20px; border-radius: var(--as-radius);
  overflow-x: auto; margin: 1.5em 0; font-size: .8125rem; font-family: var(--as-font-mono); line-height: 1.6;
}
.as-chapter-content code { font-family: var(--as-font-mono); font-size: .85em; background: var(--as-100); padding: 2px 6px; border-radius: 4px; }
.as-chapter-content pre code { background: none; padding: 0; }
.as-chapter-content ul, .as-chapter-content ol { margin: 0 0 1em 1.5em; }
.as-chapter-content li { margin-bottom: .4em; }
/* Chapter meta tags (course/chapter/type) */
.as-chapter-meta-tags {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px;
}
.as-chapter-meta-tag {
  display: inline-flex; align-items: center; padding: 4px 12px;
  font-size: .75rem; font-weight: 600; border-radius: 9999px;
  letter-spacing: .02em;
}
.as-chapter-meta-tag--course {
  background: var(--as-primary-light); color: var(--as-primary);
}
.as-chapter-meta-tag--chapter {
  background: var(--as-lv2-light, #dcfce7); color: var(--as-lv2, #16a34a);
}
.as-chapter-meta-tag--type {
  background: var(--as-50); color: var(--as-500); border: 1px solid var(--as-200);
}

.as-chapter-content blockquote { padding: 16px 20px; margin: 1em 0; background: var(--as-primary-light); border-radius: var(--as-radius); color: var(--as-700); }
.as-chapter-content table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: .875rem; }
.as-chapter-content th, .as-chapter-content td { padding: 10px 14px; border: 1px solid var(--as-200); text-align: left; }
.as-chapter-content th { background: var(--as-50); font-weight: 600; color: var(--as-600); }

/* ============================================================
   Quiz
   ============================================================ */
.as-quiz { max-width: 720px; }
.as-quiz-question {
  margin-bottom: 20px; padding: 24px; background: var(--as-white);
  border: 1px solid var(--as-100); border-radius: var(--as-radius);
}
.as-quiz-question__text { font-size: .9375rem; font-weight: 600; color: var(--as-900); margin-bottom: 16px; line-height: 1.6; }
.as-quiz-choices { display: flex; flex-direction: column; gap: 8px; }
.as-quiz-choice {
  display: flex; align-items: center; gap: 10px; padding: 12px 16px;
  border: 1px solid var(--as-200); border-radius: var(--as-radius-sm);
  cursor: pointer; font-size: .875rem; transition: all .15s;
}
.as-quiz-choice:hover { border-color: var(--as-primary); background: var(--as-primary-light); }
.as-quiz-choice input[type="radio"] { accent-color: var(--as-primary); width: 16px; height: 16px; }
.as-quiz-results { display: none; padding: 20px; border-radius: var(--as-radius); margin-top: 20px; font-weight: 600; }
.as-quiz-results--pass { display: block; background: var(--as-success-light); color: #047857; border: 1px solid #a7f3d0; }
.as-quiz-results--fail { display: block; background: var(--as-danger-light); color: #991b1b; border: 1px solid #fecaca; }

/* Quiz question state markers */
.as-quiz-question--unanswered { border-color: var(--as-danger) !important; animation: asShake .4s ease; }
@keyframes asShake { 0%,100% { transform: translateX(0); } 20%,60% { transform: translateX(-4px); } 40%,80% { transform: translateX(4px); } }
.as-quiz-question--correct { border-color: var(--as-success) !important; background: #f0fdf4; }
.as-quiz-question--wrong { border-color: var(--as-danger) !important; background: #fef2f2; }
.as-quiz-question--pending { border-color: var(--as-warning) !important; background: #fffbeb; }
.as-quiz-question--correct .as-quiz-choice,
.as-quiz-question--wrong .as-quiz-choice { pointer-events: none; opacity: .7; }
.as-quiz-question--correct .as-quiz-choice,
.as-quiz-question--wrong .as-quiz-choice,
.as-quiz-question--pending textarea { cursor: default; }
.as-quiz-mark {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: .75rem; font-weight: 700; padding: 3px 10px; border-radius: 999px;
  margin-bottom: 12px;
}
.as-quiz-mark--correct { background: var(--as-success-light); color: #047857; }
.as-quiz-mark--wrong { background: var(--as-danger-light); color: #991b1b; }
.as-quiz-mark--pending { background: var(--as-warning-light); color: #92400e; }

/* Quiz explanation (shown after wrong answer) */
.as-quiz-explanation {
  margin-top: 12px; padding: 14px 16px; border-radius: var(--as-radius-sm);
  background: var(--as-white); border: 1px solid var(--as-200);
  animation: asSlideIn .3s ease;
}
@keyframes asSlideIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.as-quiz-explanation__answers { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; font-size: .8125rem; }
.as-quiz-explanation__wrong { display: inline-flex; align-items: center; gap: 4px; color: var(--as-danger); font-weight: 600; }
.as-quiz-explanation__correct { display: inline-flex; align-items: center; gap: 4px; color: var(--as-success); font-weight: 600; }
.as-quiz-explanation__text { font-size: .8125rem; color: var(--as-600); line-height: 1.6; }

/* Quiz error toast */
.as-quiz-error {
  padding: 14px 20px; margin-top: 16px; border-radius: var(--as-radius);
  background: var(--as-danger-light); color: #991b1b; font-size: .875rem; font-weight: 600;
  border: 1px solid #fecaca; animation: asSlideIn .3s ease;
}

/* ── Quiz result panel ── */
.as-quiz-result-panel {
  margin-top: 32px; padding: 40px 32px 32px; border-radius: var(--as-radius-lg);
  text-align: center; animation: asResultIn .5s ease;
}
@keyframes asResultIn {
  from { opacity: 0; transform: translateY(20px) scale(.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.as-quiz-result-panel--pass { background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%); border: 1px solid #a7f3d0; }
.as-quiz-result-panel--fail { background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%); border: 1px solid #fecaca; }
.as-quiz-result-panel--pending { background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%); border: 1px solid #fde68a; }

.as-quiz-result-panel__celebration { margin-bottom: 20px; }
.as-quiz-result-panel__icon { margin-bottom: 12px; }
.as-quiz-result-panel__icon--pass { color: var(--as-success); }
.as-quiz-result-panel__icon--fail { color: var(--as-danger); }
.as-quiz-result-panel__icon--pending { color: var(--as-warning); }
.as-quiz-result-panel__title { font-size: 1.375rem; font-weight: 800; color: var(--as-900); margin-bottom: 6px; }
.as-quiz-result-panel__subtitle { font-size: .875rem; color: var(--as-600); line-height: 1.7; }

/* Score ring */
.as-quiz-result-panel__score { margin: 24px 0; }
.as-quiz-score-ring {
  position: relative; display: inline-block; width: 100px; height: 100px;
}
.as-quiz-score-ring svg { width: 100%; height: 100%; }
.as-quiz-score-ring__fill {
  transition: stroke-dashoffset 1s ease;
}
.as-quiz-score-ring__label {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 1.125rem; font-weight: 800; color: var(--as-900);
}

/* Result actions */
.as-quiz-result-panel__actions {
  display: flex; flex-direction: column; align-items: center; gap: 10px; margin-top: 24px;
}
.as-quiz-result-panel__actions .as-btn { min-width: 220px; justify-content: center; }

/* Confetti */
.as-confetti {
  position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 10;
}
.as-confetti__particle {
  position: absolute; top: -8px; width: 6px; height: 6px; border-radius: 1px;
  animation: asConfettiFall 2s ease-out forwards;
  opacity: 0;
}
@keyframes asConfettiFall {
  0% { opacity: 1; transform: translateY(0) rotate(0deg) scale(1); }
  100% { opacity: 0; transform: translateY(300px) rotate(720deg) scale(0.3); }
}

/* Admin quiz review */
.as-review-card { background: var(--as-white); border: 1px solid var(--as-200); border-radius: var(--as-radius); padding: 20px; margin-bottom: 16px; }
.as-review-card--correct { }
.as-review-card--wrong { }
.as-review-card--pending { border-color: var(--as-warning); }
.as-review-card__header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.as-review-card__number { width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: .75rem; font-weight: 700; color: var(--as-white); flex-shrink: 0; }
.as-review-card--correct .as-review-card__number { background: var(--as-success); }
.as-review-card--wrong .as-review-card__number { background: var(--as-danger); }
.as-review-card--pending .as-review-card__number { background: var(--as-warning); }
.as-review-card__question { font-weight: 600; color: var(--as-800); flex: 1; }
.as-review-card__status { font-size: .75rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; }
.as-review-card__status--correct { background: var(--as-success-light); color: #047857; }
.as-review-card__status--wrong { background: var(--as-danger-light); color: #991b1b; }
.as-review-card__status--pending { background: var(--as-warning-light); color: #92400e; }
.as-review-card__body { padding-left: 38px; }
.as-review-card__row { display: flex; gap: 8px; align-items: baseline; margin-bottom: 6px; font-size: .8125rem; }
.as-review-card__label { font-weight: 600; color: var(--as-500); min-width: 80px; flex-shrink: 0; }
.as-review-card__value { color: var(--as-700); }
.as-review-card__value--correct { color: var(--as-success); font-weight: 600; }
.as-review-card__value--wrong { color: var(--as-danger); }
.as-review-card__explanation { margin-top: 10px; padding: 10px 14px; background: var(--as-100); border-radius: var(--as-radius-sm); font-size: .8125rem; color: var(--as-600); line-height: 1.6; }
.as-review-card__actions { margin-top: 12px; display: flex; gap: 8px; }
.as-review-card__textarea { width: 100%; margin-top: 10px; padding: 10px; border: 1px solid var(--as-300); border-radius: var(--as-radius-sm); font-size: .8125rem; font-family: var(--as-font); resize: vertical; min-height: 60px; }

/* Attempt summary bar */
.as-attempt-summary { display: flex; gap: 20px; flex-wrap: wrap; padding: 16px 20px; background: var(--as-50); border-radius: var(--as-radius); margin-bottom: 24px; }
.as-attempt-summary__item { display: flex; align-items: center; gap: 6px; font-size: .875rem; color: var(--as-600); }
.as-attempt-summary__item strong { color: var(--as-800); }

/* Attempt list in worker detail */
.as-attempt-row { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-radius: var(--as-radius-sm); background: var(--as-50); margin-bottom: 6px; font-size: .8125rem; transition: background .15s; }
.as-attempt-row:hover { background: var(--as-100); }
.as-attempt-row__date { color: var(--as-500); min-width: 120px; }
.as-attempt-row__score { font-weight: 600; color: var(--as-700); }
.as-attempt-row__badge { font-size: .6875rem; font-weight: 700; padding: 2px 8px; border-radius: 999px; }
.as-attempt-row__badge--pass { background: var(--as-success-light); color: #047857; }
.as-attempt-row__badge--fail { background: var(--as-danger-light); color: #991b1b; }
.as-attempt-row__link { margin-left: auto; color: var(--as-primary); font-weight: 600; text-decoration: none; }
.as-attempt-row__link:hover { text-decoration: underline; }

/* ============================================================
   Forms
   ============================================================ */
.as-form { max-width: 560px; }
.as-form__group { margin-bottom: 20px; }
.as-form__label { display: block; margin-bottom: 6px; font-size: .8125rem; font-weight: 600; color: var(--as-600); }
.as-form__input, .as-form__textarea {
  width: 100%; padding: 10px 14px; font-size: .875rem; font-family: var(--as-font);
  border: 1px solid var(--as-300); border-radius: var(--as-radius-sm);
  background: var(--as-white); color: var(--as-800); transition: border-color .15s, box-shadow .15s;
}
.as-form__input:focus, .as-form__textarea:focus {
  outline: none; border-color: var(--as-primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.12);
}
.as-form__textarea { min-height: 100px; resize: vertical; }
.as-form__checkbox { display: flex; align-items: center; gap: 8px; font-size: .8125rem; color: var(--as-600); }
.as-form__error { font-size: .75rem; color: var(--as-danger); margin-top: 4px; }

/* ============================================================
   Buttons
   ============================================================ */
.as-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 22px; font-size: .8125rem; font-weight: 600; font-family: var(--as-font);
  border: 1px solid transparent; border-radius: var(--as-radius-sm);
  cursor: pointer; text-decoration: none; line-height: 1.4; transition: all .15s;
}
.as-btn--primary { background: var(--as-primary); color: #fff; }
.as-btn--primary:hover { background: var(--as-primary-hover); box-shadow: 0 2px 8px rgba(99,102,241,.3); }
.as-btn--secondary { background: var(--as-white); color: var(--as-700); border-color: var(--as-300); }
.as-btn--secondary:hover { background: var(--as-50); border-color: var(--as-400); }
.as-btn--success { background: var(--as-success); color: #fff; }
.as-btn--success:hover { background: #059669; }
.as-btn--danger { background: var(--as-danger); color: #fff; }
.as-btn--danger:hover { background: #dc2626; }
.as-btn--ghost { background: transparent; color: var(--as-primary); }
.as-btn--ghost:hover { background: var(--as-primary-light); }
.as-btn--disabled { opacity: .5; cursor: not-allowed; pointer-events: none; }
.as-btn--sm { padding: 6px 14px; font-size: .75rem; }
.as-btn--lg { padding: 14px 32px; font-size: .9375rem; border-radius: var(--as-radius); }
.as-btn--block { width: 100%; }
.as-btn:disabled { opacity: .45; cursor: not-allowed; pointer-events: none; }

/* ============================================================
   Modal
   ============================================================ */
.as-modal-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(15, 23, 42, .5); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  animation: asModalOverlayIn .2s ease;
}
@keyframes asModalOverlayIn { from { opacity: 0; } to { opacity: 1; } }
.as-modal {
  background: var(--as-white); border-radius: var(--as-radius-lg);
  box-shadow: var(--as-shadow-lg); padding: 36px 32px 28px;
  max-width: 440px; width: 100%; position: relative;
  text-align: center;
  animation: asModalIn .25s ease;
}
@keyframes asModalIn { from { opacity: 0; transform: translateY(16px) scale(.97); } to { opacity: 1; transform: translateY(0) scale(1); } }
.as-modal__close {
  position: absolute; top: 12px; right: 12px;
  background: none; border: none; cursor: pointer;
  color: var(--as-400); padding: 4px; border-radius: 6px;
  transition: color .15s, background .15s;
}
.as-modal__close:hover { color: var(--as-700); background: var(--as-100); }
.as-modal__icon { margin-bottom: 16px; }
.as-modal__title { font-size: 1.125rem; font-weight: 700; color: var(--as-900); margin-bottom: 10px; }
.as-modal__text { font-size: .875rem; color: var(--as-600); line-height: 1.7; margin-bottom: 24px; }
.as-modal__actions { display: flex; flex-direction: column; gap: 10px; }
.as-modal__actions .as-btn--lg { justify-content: center; }
.as-modal__actions .as-btn--ghost { font-size: .8125rem; }

/* ============================================================
   Tables
   ============================================================ */
.as-table {
  width: 100%; border-collapse: collapse; background: var(--as-white);
  border: 1px solid var(--as-100); border-radius: var(--as-radius); overflow: hidden;
}
.as-table th, .as-table td { padding: 12px 16px; text-align: left; font-size: .8125rem; border-bottom: 1px solid var(--as-100); }
.as-table th { background: var(--as-50); font-weight: 600; color: var(--as-500); font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; }
.as-table tr:hover td { background: var(--as-50); }

/* ============================================================
   Login
   ============================================================ */
.as-login, .as-invite {
  position: relative; display: flex; align-items: center; justify-content: center;
  min-height: 100vh; background: var(--as-50); padding: 24px; overflow: hidden;
}
.as-login__bg, .as-invite__bg { position: absolute; inset: 0; pointer-events: none; }
.as-login__bg-shape, .as-invite__bg-shape {
  position: absolute; border-radius: 50%;
}
.as-login__bg-shape--1, .as-invite__bg-shape--1 {
  top: -15%; right: -10%; width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(99,102,241,.08) 0%, transparent 70%);
}
.as-login__bg-shape--2, .as-invite__bg-shape--2 {
  bottom: -10%; left: -5%; width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(45,212,191,.08) 0%, transparent 70%);
}
.as-login__bg-shape--3, .as-invite__bg-shape--3 {
  top: 40%; left: 50%; width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(168,85,247,.05) 0%, transparent 70%);
}
.as-login__card, .as-invite__card {
  position: relative; z-index: 1; width: 100%; max-width: 420px; padding: 48px 36px;
  background: var(--as-white); border: 1px solid var(--as-100);
  border-radius: var(--as-radius-lg); box-shadow: var(--as-shadow-lg);
}
.as-login__header, .as-invite__header { text-align: center; margin-bottom: 32px; }
.as-login__icon, .as-invite__icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; margin-bottom: 16px; border-radius: var(--as-radius);
  background: linear-gradient(135deg, var(--as-lv1), var(--as-lv2)); color: #fff;
}
.as-login__title, .as-invite__title {
  font-size: 1.75rem; font-weight: 800; margin-bottom: 4px;
  background: linear-gradient(135deg, var(--as-lv1), var(--as-lv2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.as-login__subtitle, .as-invite__subtitle { font-size: .875rem; color: var(--as-500); }
.as-form-group { margin-bottom: 20px; }
.as-form-label { display: block; margin-bottom: 6px; font-size: .8125rem; font-weight: 600; color: var(--as-600); }
.as-form-input {
  width: 100%; padding: 10px 14px; font-size: .875rem; font-family: var(--as-font);
  border: 1px solid var(--as-300); border-radius: var(--as-radius-sm);
  background: var(--as-white); color: var(--as-800); transition: border-color .15s, box-shadow .15s;
}
.as-form-input:focus {
  outline: none; border-color: var(--as-primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.12);
}
.as-form-input:disabled { background: var(--as-100); color: var(--as-500); cursor: not-allowed; }
.as-form-group--checkbox { display: flex; align-items: center; }
.as-form-checkbox { display: flex; align-items: center; gap: 8px; font-size: .8125rem; color: var(--as-600); cursor: pointer; }
.as-btn--full { width: 100%; }

/* ============================================================
   Chapter Navigation
   ============================================================ */
.as-chapter-nav {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--as-100);
}
.as-chapter-nav__prev { margin-right: auto; }
.as-chapter-nav__next { margin-left: auto; }
.as-chapter-nav__link {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .8125rem; color: var(--as-500); text-decoration: none;
  padding: 8px 14px; border-radius: var(--as-radius-sm); transition: all .15s;
}
.as-chapter-nav__link:hover { color: var(--as-primary); background: var(--as-primary-light); }
.as-chapter-nav__link svg { flex-shrink: 0; }

/* ============================================================
   Alerts
   ============================================================ */
.as-alert { padding: 14px 18px; border-radius: var(--as-radius-sm); font-size: .8125rem; margin-bottom: 20px; border: 1px solid; }
.as-alert--success { background: var(--as-success-light); color: #047857; border-color: #a7f3d0; }
.as-alert--error { background: var(--as-danger-light); color: #991b1b; border-color: #fecaca; }
.as-alert--info { background: var(--as-primary-light); color: #3730a3; border-color: #c7d2fe; }

/* ============================================================
   Landing Page
   ============================================================ */
.as-lp { background: var(--as-white); }
.as-lp-inner { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* Hero */
.as-lp-hero {
  position: relative; min-height: 100vh; display: flex; flex-direction: column;
  background: var(--as-white); color: var(--as-900); overflow: hidden;
}
.as-lp-hero__bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }

/* Orbit circles (thin rings, like thumbnail decorations) */
.as-lp-hero__orbit {
  position: absolute; border-radius: 50%;
  border: 1.5px solid rgba(99,102,241,.15);
}
.as-lp-hero__orbit--1 {
  width: 700px; height: 700px; top: -18%; right: -12%;
  animation: as-rotate-slow 60s linear infinite;
  border-width: 2px; border-color: rgba(99,102,241,.12);
  box-shadow: 0 0 60px rgba(99,102,241,.04);
}
.as-lp-hero__orbit--2 {
  width: 480px; height: 480px; bottom: -8%; right: 15%;
  border-color: rgba(45,212,191,.18);
  animation: as-rotate-slow 45s linear infinite reverse;
  box-shadow: 0 0 40px rgba(45,212,191,.03);
}
.as-lp-hero__orbit--3 {
  width: 280px; height: 280px; top: 28%; right: 3%;
  border-color: rgba(168,85,247,.12);
  animation: as-rotate-slow 35s linear infinite;
}
.as-lp-hero__particle {
  position: absolute; width: 8px; height: 8px; border-radius: 50%;
  background: var(--as-lv2); opacity: .6;
  animation: as-float 4s ease-in-out infinite;
  box-shadow: 0 0 12px currentColor;
}
.as-lp-hero__particle--lg { width: 12px; height: 12px; background: var(--as-lv1); opacity: .5; box-shadow: 0 0 20px rgba(45,212,191,.4); }

.as-lp-nav {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1200px; width: 100%; margin: 0 auto;
  padding: 20px 48px; position: relative; z-index: 10;
}
.as-lp-nav__logo {
  font-size: 1.5rem; font-weight: 800;
  background: linear-gradient(135deg, var(--as-lv1), var(--as-lv2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.as-lp-nav__actions { display: flex; align-items: center; gap: 28px; }
.as-lp-nav__link { color: var(--as-500); font-size: .8125rem; font-weight: 500; transition: color .15s; }
.as-lp-nav__link:hover { color: var(--as-800); }

/* Hero container — keeps inner + showcase together within max-width */
.as-lp-hero__container {
  flex: 1; display: flex; align-items: center; justify-content: space-between;
  max-width: 1200px; width: 100%; margin: 0 auto; padding: 0 48px 60px;
  position: relative; z-index: 5;
}
.as-lp-hero__inner {
  display: flex; flex-direction: column; align-items: flex-start; justify-content: center;
  max-width: 480px; flex-shrink: 0;
}
.as-lp-hero__label {
  display: inline-block; padding: 6px 18px; margin-bottom: 28px;
  font-size: .625rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  background: rgba(99,102,241,.06); border-radius: 9999px; color: var(--as-primary);
}
.as-lp-hero__title {
  font-size: clamp(2.5rem, 5vw, 3.75rem); font-weight: 900; line-height: 1.15;
  margin-bottom: 24px; letter-spacing: -.02em; color: var(--as-900);
}
.as-lp-hero__subtitle {
  font-size: clamp(.875rem, 1.5vw, 1rem); color: var(--as-500);
  line-height: 2; margin-bottom: 40px;
}
.as-lp-hero__cta {
  display: flex; flex-direction: column; align-items: flex-start; gap: 16px;
}
.as-lp-hero__cta .as-btn {
  padding: 16px 44px; font-size: .9375rem; border-radius: var(--as-radius);
  box-shadow: 0 4px 20px rgba(99,102,241,.25);
}
.as-lp-hero__cta .as-btn:hover { box-shadow: 0 8px 28px rgba(99,102,241,.35); transform: translateY(-2px); }
.as-lp-hero__cta-sub {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--as-500); font-size: .8125rem; font-weight: 500;
  text-decoration: none; transition: color .2s;
}
.as-lp-hero__cta-sub:hover { color: var(--as-primary); }
.as-lp-hero__cta-sub svg { animation: as-bounce-down 2s ease-in-out infinite; }
@keyframes as-bounce-down { 0%,100% { transform: translateY(0); } 50% { transform: translateY(4px); } }

/* Hero showcase (floating cards on right side) */
.as-lp-hero__showcase {
  display: flex; flex-direction: column; gap: 16px;
  flex-shrink: 0;
}
.as-lp-hero__showcase-card {
  width: 320px; border-radius: var(--as-radius-lg); overflow: hidden;
  box-shadow: var(--as-shadow-lg); animation: as-float 6s ease-in-out infinite;
  transition: transform .3s;
}
.as-lp-hero__showcase-card:nth-child(2) { margin-left: 40px; }
.as-lp-hero__showcase-card:nth-child(3) { margin-left: -20px; }
.as-lp-hero__showcase-card:hover { transform: scale(1.03); }
.as-lp-hero__showcase-card img { width: 100%; height: auto; display: block; }

/* Skill path (what you learn) */
.as-lp-skill-path {
  display: flex; align-items: center; justify-content: center; gap: 0; flex-wrap: wrap;
  margin-top: 48px;
}
.as-lp-skill-path__item {
  flex: 0 0 150px; text-align: center; padding: 24px 12px;
}
.as-lp-skill-path__icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px; border-radius: 14px; margin-bottom: 12px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 12%, transparent), color-mix(in srgb, var(--accent) 5%, transparent));
  color: var(--accent);
}
.as-lp-skill-path__item h3 { font-size: .875rem; font-weight: 700; color: var(--as-900); margin-bottom: 4px; }
.as-lp-skill-path__item p { font-size: .6875rem; color: var(--as-500); line-height: 1.5; }
.as-lp-skill-path__arrow {
  flex: 0 0 24px; display: flex; align-items: center; justify-content: center;
  color: var(--as-300);
}

/* For who section */
.as-lp-for-who {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 800px; margin: 0 auto;
}
.as-lp-for-who__card {
  padding: 36px 28px; background: var(--as-white); border-radius: var(--as-radius-lg);
  box-shadow: var(--as-shadow); transition: all .3s;
}
.as-lp-for-who__card:hover { transform: translateY(-4px); box-shadow: var(--as-shadow-lg); }
.as-lp-for-who__icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px; border-radius: 14px; margin-bottom: 16px;
}
.as-lp-for-who__card h3 { font-size: 1.05rem; font-weight: 700; color: var(--as-900); margin-bottom: 16px; }
.as-lp-for-who__card ul { list-style: none; padding: 0; margin: 0; }
.as-lp-for-who__card li {
  display: flex; align-items: center; gap: 8px;
  font-size: .8125rem; color: var(--as-600); padding: 6px 0; line-height: 1.5;
}
.as-lp-for-who__card li::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--as-primary); flex-shrink: 0;
}

/* Cat card meta */
.as-lp-cat-card__meta {
  display: flex; gap: 10px; font-size: .6875rem; color: rgba(255,255,255,.4); margin-top: 2px;
}

/* Numbers */
.as-lp-numbers {
  background: var(--as-50); position: relative; overflow: hidden;
  background-image: radial-gradient(circle at 15% 50%, rgba(99,102,241,.04) 0%, transparent 50%),
                     radial-gradient(circle at 85% 50%, rgba(45,212,191,.04) 0%, transparent 50%);
}
.as-lp-numbers__grid {
  display: grid; grid-template-columns: repeat(4, 1fr); max-width: 880px; margin: 0 auto; padding: 64px 24px;
}
.as-lp-numbers__item { text-align: center; }
.as-lp-numbers__value {
  display: block; font-size: 3rem; font-weight: 900; letter-spacing: -.02em;
  background: linear-gradient(135deg, var(--as-lv1), var(--as-lv2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.as-lp-numbers__unit { font-size: .6875rem; color: var(--as-400); margin-top: 4px; letter-spacing: .08em; text-transform: uppercase; display: block; }

/* Marquee (auto-scrolling course thumbnails) */
@keyframes as-marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.as-lp-marquee-section { padding: 48px 0; overflow: hidden; background: var(--as-white); }
.as-lp-marquee { overflow: hidden; mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent); }
.as-lp-marquee__track {
  display: flex; gap: 16px; width: max-content;
  animation: as-marquee 40s linear infinite;
}
.as-lp-marquee__track:hover { animation-play-state: paused; }
.as-lp-marquee__item {
  flex: 0 0 300px; border-radius: var(--as-radius); overflow: hidden;
  box-shadow: var(--as-shadow); transition: transform .3s;
}
.as-lp-marquee__item:hover { transform: scale(1.04); }
.as-lp-marquee__item img { width: 100%; height: auto; display: block; }

/* Sections */
.as-lp-section {
  padding: 100px 0; position: relative; overflow: hidden;
}
.as-lp-section:not(.as-lp-section--dark) {
  background-image: radial-gradient(circle at 10% 20%, rgba(99,102,241,.03) 0%, transparent 40%),
                     radial-gradient(circle at 90% 80%, rgba(45,212,191,.03) 0%, transparent 40%);
}
.as-lp-section--dark {
  background: var(--as-900); color: #fff; position: relative; overflow: hidden;
  background-image: radial-gradient(circle at 20% 30%, rgba(99,102,241,.08) 0%, transparent 50%),
                     radial-gradient(circle at 80% 70%, rgba(45,212,191,.06) 0%, transparent 50%);
}
.as-lp-section--dark::before,
.as-lp-section--dark::after {
  content: ''; position: absolute; border-radius: 50%; pointer-events: none;
  border: 2px solid rgba(99,102,241,.1);
}
.as-lp-section--dark::before {
  width: 600px; height: 600px; top: -120px; right: -140px;
  animation: as-rotate-slow 70s linear infinite;
  box-shadow: 0 0 80px rgba(99,102,241,.06);
}
.as-lp-section--dark::after {
  width: 420px; height: 420px; bottom: -100px; left: -100px;
  border-color: rgba(45,212,191,.1);
  animation: as-rotate-slow 55s linear infinite reverse;
  box-shadow: 0 0 60px rgba(45,212,191,.05);
}
.as-lp-section--dark .as-lp-inner { position: relative; z-index: 1; }

/* Dark section decorations */
.as-lp-dark-decor { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.as-lp-dark-decor__orb {
  position: absolute; border-radius: 50%; filter: blur(100px); opacity: .2;
}
.as-lp-dark-decor__orb--1 {
  width: 500px; height: 500px; top: 5%; left: -8%;
  background: var(--as-lv2); animation: as-float 12s ease-in-out infinite;
}
.as-lp-dark-decor__orb--2 {
  width: 400px; height: 400px; top: 35%; right: -5%;
  background: var(--as-lv1); animation: as-float 10s ease-in-out infinite 2s;
}
.as-lp-dark-decor__orb--3 {
  width: 350px; height: 350px; bottom: 2%; left: 25%;
  background: var(--as-lv5); animation: as-float 14s ease-in-out infinite 4s;
}
.as-lp-dark-decor__dots {
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 28px 28px;
}
.as-lp-section__title {
  font-size: 1.75rem; font-weight: 800; text-align: center; margin-bottom: 16px;
  color: var(--as-900); letter-spacing: -.01em;
}
.as-lp-section__title--light { color: #fff; }
.as-lp-section__sub { text-align: center; color: var(--as-500); margin-bottom: 56px; font-size: .9375rem; }
.as-lp-section__sub--light { color: rgba(255,255,255,.5); }

/* Features */
.as-lp-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.as-lp-feature-card {
  padding: 40px 28px; text-align: center;
  background: var(--as-white); border-radius: var(--as-radius-lg);
  box-shadow: var(--as-shadow); transition: all .3s cubic-bezier(.25,.8,.25,1);
}
.as-lp-feature-card:hover { transform: translateY(-6px); box-shadow: var(--as-shadow-lg); }
.as-lp-feature-card__icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 64px; height: 64px; border-radius: 16px; margin-bottom: 20px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 10%, transparent), color-mix(in srgb, var(--accent) 5%, transparent));
  color: var(--accent);
}
.as-lp-feature-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 12px; color: var(--as-900); }
.as-lp-feature-card p { font-size: .8125rem; color: var(--as-500); line-height: 1.8; }

/* Curriculum (dark section) */
.as-lp-level { margin-bottom: 48px; }
.as-lp-level__tag {
  display: inline-block; padding: 6px 18px; margin-bottom: 20px;
  font-size: .625rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  border-radius: 9999px; color: #fff;
}
.as-lp-level__tag--from-lv1 { background: linear-gradient(135deg, var(--as-lv1), #14b8a6); }
.as-lp-level__tag--from-lv2 { background: linear-gradient(135deg, var(--as-lv2), #818cf8); }
.as-lp-level__tag--from-lv3 { background: linear-gradient(135deg, var(--as-lv3), #f43f5e); }
.as-lp-level__tag--from-lv4 { background: linear-gradient(135deg, var(--as-lv4), #60a5fa); }
.as-lp-level__tag--from-lv5 { background: linear-gradient(135deg, var(--as-lv5), #c084fc); }

.as-lp-level__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }

.as-lp-cat-card {
  display: flex; gap: 0; flex-direction: column;
  background: rgba(255,255,255,.06); border-radius: var(--as-radius);
  overflow: hidden; transition: all .3s cubic-bezier(.25,.8,.25,1);
  backdrop-filter: blur(4px);
}
.as-lp-cat-card:hover { background: rgba(255,255,255,.1); transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,0,0,.2); }
.as-lp-cat-card__img { position: relative; width: 100%; padding-top: 56.25%; overflow: hidden; }
.as-lp-cat-card__img img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.as-lp-cat-card:hover .as-lp-cat-card__img img { transform: scale(1.05); }
.as-lp-cat-card__info { padding: 16px 18px; }
.as-lp-cat-card__num {
  display: inline-block; font-size: .625rem; font-weight: 700; letter-spacing: .06em;
  color: rgba(255,255,255,.4); margin-bottom: 4px;
}
.as-lp-cat-card__info h3 { font-size: .875rem; font-weight: 600; color: #fff; line-height: 1.4; margin-bottom: 6px; }
.as-lp-cat-card__hours { font-size: .6875rem; color: rgba(255,255,255,.4); }

/* Flow */
.as-lp-flow { display: flex; align-items: center; justify-content: center; gap: 0; flex-wrap: wrap; }
.as-lp-flow__step {
  flex: 0 0 200px; text-align: center; padding: 32px 20px;
  background: var(--as-white); border-radius: var(--as-radius-lg);
  box-shadow: var(--as-shadow); transition: all .3s;
}
.as-lp-flow__step:hover { transform: translateY(-4px); box-shadow: var(--as-shadow-lg); }
.as-lp-flow__num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 14px; font-size: 1.125rem; font-weight: 800;
  background: linear-gradient(135deg, var(--as-lv1), var(--as-lv2)); color: #fff;
  margin-bottom: 16px;
}
.as-lp-flow__step h4 { font-size: .9375rem; font-weight: 700; margin-bottom: 6px; color: var(--as-900); }
.as-lp-flow__step p { font-size: .8125rem; color: var(--as-500); line-height: 1.7; }
.as-lp-flow__arrow { flex: 0 0 40px; display: flex; align-items: center; justify-content: center; color: var(--as-300); }

/* CTA */
.as-lp-cta {
  padding: 120px 0; text-align: center; position: relative; overflow: hidden;
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 40%, #312e81 70%, #0f172a 100%); color: #fff;
}
.as-lp-cta__bg { position: absolute; inset: 0; pointer-events: none; }
.as-lp-cta__orbit {
  position: absolute; border-radius: 50%;
  border: 2px solid rgba(99,102,241,.15);
}
.as-lp-cta__orbit--1 {
  width: 550px; height: 550px; top: -35%; left: -12%;
  animation: as-rotate-slow 50s linear infinite;
  box-shadow: 0 0 80px rgba(99,102,241,.06);
}
.as-lp-cta__orbit--2 {
  width: 400px; height: 400px; bottom: -25%; right: -8%;
  border-color: rgba(45,212,191,.15);
  animation: as-rotate-slow 40s linear infinite reverse;
  box-shadow: 0 0 60px rgba(45,212,191,.05);
}
.as-lp-cta__badge {
  display: inline-block; padding: 6px 20px; margin-bottom: 24px;
  font-size: .625rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  background: rgba(99,102,241,.15); border: 1px solid rgba(99,102,241,.25);
  border-radius: 9999px; color: #a5b4fc; position: relative; z-index: 1;
}
.as-lp-cta h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 800; margin-bottom: 16px;
  line-height: 1.4; position: relative; z-index: 1;
}
.as-lp-cta p {
  color: rgba(255,255,255,.5); margin-bottom: 40px; font-size: .9375rem;
  line-height: 1.8; position: relative; z-index: 1;
}
.as-lp-cta__actions { position: relative; z-index: 1; margin-bottom: 48px; }
.as-lp-cta__btn {
  padding: 18px 52px !important; font-size: 1rem !important;
  color: #fff !important; -webkit-text-fill-color: #fff !important;
  background: var(--as-primary) !important; background-image: none !important;
  box-shadow: 0 4px 24px rgba(99,102,241,.4) !important;
  animation: as-cta-pulse 3s ease-in-out infinite;
}
@keyframes as-cta-pulse {
  0%, 100% { box-shadow: 0 4px 24px rgba(99,102,241,.4); }
  50% { box-shadow: 0 8px 40px rgba(99,102,241,.6); }
}
.as-lp-cta__btn:hover {
  transform: translateY(-3px) !important;
  background: var(--as-primary-hover) !important;
  color: #fff !important; -webkit-text-fill-color: #fff !important;
}
.as-lp-cta__stats {
  display: flex; align-items: center; justify-content: center; gap: 32px;
  position: relative; z-index: 1;
}
.as-lp-cta__stat { text-align: center; }
.as-lp-cta__stat-num {
  display: block; font-size: 1.75rem; font-weight: 800;
  background: linear-gradient(135deg, var(--as-lv1), var(--as-lv2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.as-lp-cta__stat-label { font-size: .6875rem; color: rgba(255,255,255,.4); letter-spacing: .06em; }
.as-lp-cta__stat-sep { width: 1px; height: 32px; background: rgba(255,255,255,.1); }

.as-lp-footer { padding: 24px; text-align: center; font-size: .75rem; color: var(--as-400); letter-spacing: .04em; }

/* ============================================================
   Utilities
   ============================================================ */
.as-text-center { text-align: center; }
.as-text-muted { color: var(--as-500); }
.as-text-sm { font-size: .8125rem; }
.as-mt-1 { margin-top: 8px; }  .as-mt-2 { margin-top: 16px; }
.as-mt-3 { margin-top: 24px; } .as-mt-4 { margin-top: 32px; }
.as-mb-1 { margin-bottom: 8px; }  .as-mb-2 { margin-bottom: 16px; }
.as-mb-3 { margin-bottom: 24px; } .as-mb-4 { margin-bottom: 32px; }
.as-empty-state { text-align: center; padding: 64px 24px; color: var(--as-400); font-size: .875rem; }

/* ============================================================
   Quick Action Cards (Dashboard)
   ============================================================ */
.as-quick-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.as-quick-card {
  display: flex; align-items: center; gap: 16px; padding: 20px 24px;
  background: var(--as-white); border-radius: var(--as-radius);
  box-shadow: var(--as-shadow-sm); text-decoration: none; color: inherit;
  transition: all .25s cubic-bezier(.25,.8,.25,1);
}
.as-quick-card:hover {
  box-shadow: var(--as-shadow-md); transform: translateY(-2px);
}
.as-quick-card__icon {
  display: flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; border-radius: 14px; flex-shrink: 0;
}
.as-quick-card__icon--lv1 { background: var(--as-lv1-light); color: var(--as-lv1); }
.as-quick-card__icon--lv2 { background: var(--as-lv2-light); color: var(--as-lv2); }
.as-quick-card__icon--lv3 { background: var(--as-lv3-light); color: var(--as-lv3); }
.as-quick-card__icon--lv4 { background: var(--as-lv4-light); color: var(--as-lv4); }
.as-quick-card__icon--lv5 { background: var(--as-lv5-light); color: var(--as-lv5); }
.as-quick-card__body { flex: 1; min-width: 0; }
.as-quick-card__body h3 { font-size: .9375rem; font-weight: 700; color: var(--as-900); margin-bottom: 2px; }
.as-quick-card__body p { font-size: .75rem; color: var(--as-500); margin: 0; }
.as-quick-card__arrow { flex-shrink: 0; color: var(--as-300); transition: color .15s, transform .15s; }
.as-quick-card:hover .as-quick-card__arrow { color: var(--as-primary); transform: translateX(3px); }

/* Page header utility */
.as-page-header {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px; margin-bottom: 8px;
}

/* Section title (no border variant) */
.as-section-title--clean {
  font-size: 1.125rem; font-weight: 700; color: var(--as-900);
  margin-bottom: 16px; border: none; padding: 0;
}

/* Data list (key-value pairs) */
.as-dl { display: grid; grid-template-columns: auto 1fr; gap: 8px 20px; font-size: .875rem; }
.as-dl dt { color: var(--as-500); font-weight: 500; }
.as-dl dd { color: var(--as-800); margin: 0; }

/* Table wrapper for responsive scroll */
.as-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--as-radius); }

/* ============================================================
   Mypage
   ============================================================ */

/* Welcome card */
.as-welcome {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 28px 32px; margin-bottom: 24px;
  background: var(--as-white); border-radius: var(--as-radius-lg);
  box-shadow: var(--as-shadow-sm);
  background-image: radial-gradient(circle at 95% 50%, rgba(99,102,241,.04) 0%, transparent 50%);
}
.as-welcome__greeting { font-size: 1.25rem; font-weight: 800; color: var(--as-900); margin-bottom: 4px; }
.as-welcome__message { font-size: .8125rem; color: var(--as-500); margin: 0; }
.as-welcome__schedule {
  text-align: right; flex-shrink: 0;
  padding: 16px 24px; border-radius: var(--as-radius);
  background: linear-gradient(135deg, rgba(99,102,241,.06), rgba(45,212,191,.04));
}
.as-welcome__schedule-label { font-size: .625rem; font-weight: 600; color: var(--as-500); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 4px; }
.as-welcome__schedule-date { font-size: 1.25rem; font-weight: 800; color: var(--as-primary); }
.as-welcome__schedule-detail { font-size: .6875rem; color: var(--as-400); margin-top: 2px; }

/* Course cards grid */
.as-mypage-courses { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; margin-top: 16px; }
.as-mypage-course {
  display: flex; flex-direction: column; text-decoration: none; color: inherit;
  background: var(--as-white); border-radius: var(--as-radius); overflow: hidden;
  box-shadow: var(--as-shadow-sm); transition: all .25s cubic-bezier(.25,.8,.25,1);
}
.as-mypage-course:hover { box-shadow: var(--as-shadow-md); transform: translateY(-3px); }
.as-mypage-course__thumb {
  position: relative; width: 100%; padding-top: 56.25%; overflow: hidden; background: var(--as-100);
}
.as-mypage-course__thumb img {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover;
  transition: transform .3s;
}
.as-mypage-course:hover .as-mypage-course__thumb img { transform: scale(1.05); }
.as-mypage-course__pct {
  position: absolute; bottom: 8px; right: 8px;
  padding: 4px 10px; border-radius: 9999px; font-size: .6875rem; font-weight: 700;
  background: rgba(0,0,0,.6); color: #fff; backdrop-filter: blur(4px);
}
.as-mypage-course__body { padding: 14px 16px; flex: 1; display: flex; flex-direction: column; gap: 8px; }
.as-mypage-course__title { font-size: .8125rem; font-weight: 600; color: var(--as-900); line-height: 1.4; }
.as-mypage-course__progress { display: flex; align-items: center; gap: 8px; }
.as-mypage-course__progress .as-progress { flex: 1; }
.as-mypage-course__count { font-size: .6875rem; color: var(--as-400); flex-shrink: 0; }
.as-mypage-course__next { font-size: .6875rem; color: var(--as-500); display: flex; align-items: center; gap: 4px; }

/* Schedule */
.as-schedule__setup {
  text-align: center; padding: 32px; background: var(--as-white);
  border-radius: var(--as-radius); box-shadow: var(--as-shadow-sm);
}
.as-schedule__setup p { color: var(--as-500); font-size: .875rem; margin-bottom: 16px; }

/* Guide */
.as-guide {
  padding: 32px; background: var(--as-white); border-radius: var(--as-radius-lg);
  box-shadow: var(--as-shadow-sm);
}
.as-guide__steps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 20px; }
.as-guide__step { display: flex; gap: 16px; align-items: flex-start; }
.as-guide__step-num {
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  width: 36px; height: 36px; border-radius: 10px; font-size: .875rem; font-weight: 800;
  background: linear-gradient(135deg, var(--as-lv1), var(--as-lv2)); color: #fff;
}
.as-guide__step-body h4 { font-size: .875rem; font-weight: 700; color: var(--as-900); margin-bottom: 4px; }
.as-guide__step-body p { font-size: .75rem; color: var(--as-500); line-height: 1.6; margin: 0; }

/* Bookmark button */
.as-bookmark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 8px; border: none; cursor: pointer;
  background: var(--as-100); color: var(--as-400); transition: all .2s;
}
.as-bookmark:hover { background: var(--as-200); color: var(--as-primary); }
.as-bookmark--active { background: var(--as-primary-light); color: var(--as-primary); }

/* Bookmark list (mypage) */
.as-bookmark-list { display: flex; flex-direction: column; gap: 4px; }
.as-bookmark-item {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
  background: var(--as-white); border-radius: var(--as-radius-sm);
  text-decoration: none; color: inherit; transition: background .15s;
}
.as-bookmark-item:hover { background: var(--as-50); }
.as-bookmark-item__body { flex: 1; min-width: 0; }
.as-bookmark-item__title { font-size: .8125rem; font-weight: 600; color: var(--as-900); }
.as-bookmark-item__meta { font-size: .6875rem; color: var(--as-400); margin-top: 2px; }

/* ============================================================
   Gantt Chart (Learning Roadmap)
   ============================================================ */
.as-gantt {
  padding: 24px; margin-top: 16px;
  background: var(--as-white); border-radius: var(--as-radius-lg);
  box-shadow: var(--as-shadow-sm);
}
.as-gantt__row { display: flex; align-items: center; gap: 16px; padding: 8px 0; }
.as-gantt__row + .as-gantt__row { border-top: 1px solid var(--as-100); }
.as-gantt__label { width: 200px; flex-shrink: 0; }
.as-gantt__name { display: block; font-size: .75rem; font-weight: 600; color: var(--as-900); }
.as-gantt__meta { display: block; font-size: .625rem; color: var(--as-400); margin-top: 2px; }
.as-gantt__track { flex: 1; position: relative; height: 24px; background: var(--as-100); border-radius: 6px; overflow: visible; }
.as-gantt__bar {
  position: absolute; top: 2px; height: 20px; border-radius: 5px; overflow: hidden;
  min-width: 20px;
}
.as-gantt__bar--lv1 { background: rgba(45,212,191,.2); }
.as-gantt__bar--lv2 { background: rgba(99,102,241,.2); }
.as-gantt__bar--lv3 { background: rgba(225,29,72,.15); }
.as-gantt__bar--lv4 { background: rgba(59,130,246,.2); }
.as-gantt__bar--lv5 { background: rgba(168,85,247,.15); }
.as-gantt__fill {
  height: 100%; border-radius: 5px;
  background: linear-gradient(90deg, var(--as-lv1), var(--as-lv2));
  transition: width .5s ease;
}
.as-gantt__bar--lv1 .as-gantt__fill { background: var(--as-lv1); }
.as-gantt__bar--lv2 .as-gantt__fill { background: var(--as-lv2); }
.as-gantt__bar--lv3 .as-gantt__fill { background: var(--as-lv3); }
.as-gantt__bar--lv4 .as-gantt__fill { background: var(--as-lv4); }
.as-gantt__bar--lv5 .as-gantt__fill { background: var(--as-lv5); }
.as-gantt__date {
  position: absolute; top: -2px; font-size: .5625rem; font-weight: 600; color: var(--as-500);
  transform: translateX(-50%); white-space: nowrap;
}
.as-gantt__today {
  display: flex; align-items: center; gap: 8px; margin-top: 12px; padding-top: 8px;
  border-top: 1px dashed var(--as-200);
}
.as-gantt__today span {
  font-size: .625rem; font-weight: 600; color: var(--as-primary);
  padding: 2px 8px; background: var(--as-primary-light); border-radius: 4px;
}

/* ============================================================
   Quiz Quick Access List
   ============================================================ */
.as-quiz-list { display: flex; flex-direction: column; gap: 4px; margin-top: 12px; }
.as-quiz-list__item {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
  background: var(--as-white); border-radius: var(--as-radius-sm);
  text-decoration: none; color: inherit; transition: background .15s;
}
.as-quiz-list__item:hover { background: var(--as-50); }
.as-quiz-list__item--locked { opacity: .5; cursor: default; }
.as-quiz-list__item--locked:hover { background: transparent; }
.as-quiz-list__status { flex-shrink: 0; }
.as-quiz-list__body { flex: 1; min-width: 0; }
.as-quiz-list__title { font-size: .8125rem; font-weight: 600; color: var(--as-900); }
.as-quiz-list__course { font-size: .6875rem; color: var(--as-400); margin-top: 2px; }
.as-quiz-list__attempts { margin-left: 6px; color: var(--as-500); }

/* ============================================================
   Notes (Learning Memo)
   ============================================================ */
/* Right notepad panel (3rd column on desktop) */
.as-learn__notepad {
  width: 280px; flex-shrink: 0; background: var(--as-50);
  position: sticky; top: 60px; height: calc(100vh - 60px); overflow-y: auto;
}
.as-notepad { padding: 20px 16px; }
.as-notepad__title {
  display: flex; align-items: center; gap: 6px;
  font-size: .75rem; font-weight: 700; color: var(--as-600);
  text-transform: uppercase; letter-spacing: .04em; margin-bottom: 12px;
}
.as-notepad__textarea {
  width: 100%; min-height: 200px; padding: 12px; font-size: .8125rem; line-height: 1.7;
  font-family: var(--as-font); border: 1px solid var(--as-200); border-radius: var(--as-radius-sm);
  background: var(--as-white); color: var(--as-800); resize: vertical;
}
.as-notepad__textarea:focus { outline: none; border-color: var(--as-primary); box-shadow: 0 0 0 3px rgba(99,102,241,.1); }
.as-notepad__footer { display: flex; align-items: center; gap: 8px; margin-top: 8px; }

@media (max-width: 768px) {
  .as-welcome { flex-direction: column; align-items: stretch; text-align: center; }
  .as-welcome__schedule { text-align: center; }
  .as-mypage-courses { grid-template-columns: 1fr; }
  .as-guide__steps { grid-template-columns: 1fr; }
  .as-gantt__label { width: 100px; font-size: .6875rem; }
  .as-gantt__name { font-size: .6875rem; }
  .as-gantt { overflow-x: auto; -webkit-overflow-scrolling: touch; }
}

/* Button spinner */
.as-btn-spinner {
  display: inline-block; width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,.3); border-top-color: #fff;
  border-radius: 50%; animation: as-spin .6s linear infinite;
}
@keyframes as-spin { to { transform: rotate(360deg); } }

/* Tooltip on hover */
[data-tooltip] { position: relative; }
[data-tooltip]::after {
  content: attr(data-tooltip); position: absolute; bottom: 100%; left: 50%;
  transform: translateX(-50%) translateY(-4px); padding: 6px 12px;
  font-size: .6875rem; font-weight: 500; color: #fff; background: var(--as-900);
  border-radius: 6px; white-space: nowrap; opacity: 0; pointer-events: none;
  transition: opacity .2s, transform .2s;
}
[data-tooltip]:hover::after { opacity: 1; transform: translateX(-50%) translateY(-8px); }

/* Skeleton loading */
.as-skeleton {
  background: linear-gradient(90deg, var(--as-100) 25%, var(--as-50) 50%, var(--as-100) 75%);
  background-size: 200% 100%;
  animation: as-shimmer 1.5s infinite;
  border-radius: var(--as-radius-sm);
}

/* Focus ring for accessibility */
:focus-visible {
  outline: 2px solid var(--as-primary);
  outline-offset: 2px;
}

/* ============================================================
   Animations & Transitions
   ============================================================ */

/* Scroll-reveal (JS adds .as-visible) */
@keyframes as-fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes as-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes as-scale-in {
  from { opacity: 0; transform: scale(.92); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes as-slide-left {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes as-slide-right {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes as-count-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}
@keyframes as-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
@keyframes as-rotate-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes as-gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes as-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Scroll reveal base */
.as-reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.as-reveal.as-visible { opacity: 1; transform: translateY(0); }
.as-reveal--delay-1 { transition-delay: .1s; }
.as-reveal--delay-2 { transition-delay: .2s; }
.as-reveal--delay-3 { transition-delay: .3s; }
.as-reveal--delay-4 { transition-delay: .4s; }

/* Hero entrance */
.as-lp-hero__label { animation: as-fade-up .8s ease .2s both; }
.as-lp-hero__title { animation: as-fade-up .8s ease .4s both; }
.as-lp-hero__subtitle { animation: as-fade-up .8s ease .6s both; }
.as-lp-hero__cta { animation: as-fade-up .8s ease .8s both; }

/* Hero showcase float animation */
/* Hero showcase float timing */
.as-lp-hero__showcase-card:nth-child(1) { animation-duration: 5s; }
.as-lp-hero__showcase-card:nth-child(2) { animation-duration: 7s; animation-delay: 1s; }
.as-lp-hero__showcase-card:nth-child(3) { animation-duration: 6s; animation-delay: 2s; }

/* Card hover micro-interactions */
.as-category-card, .as-course-card, .as-lp-curriculum__card, .as-lp-feature, .as-stat-card {
  transition: all .3s cubic-bezier(.25,.8,.25,1);
}
.as-category-card:hover, .as-course-card:hover {
  transform: translateY(-4px); box-shadow: var(--as-shadow-lg);
}
.as-lp-curriculum__card:hover { transform: translateY(-4px); }
.as-lp-feature:hover { transform: translateY(-4px); box-shadow: var(--as-shadow-lg); }
.as-stat-card:hover { transform: translateY(-2px); box-shadow: var(--as-shadow-md); }

/* Button press effect */
.as-btn:active:not(:disabled) { transform: scale(.97); }
.as-btn--primary {
  transition: all .2s ease;
  background-image: linear-gradient(135deg, var(--as-primary), var(--as-primary-hover));
  background-size: 200% 200%;
}
.as-btn--primary:hover { background-position: 100% 100%; }

/* Progress bar animation */
.as-progress__bar {
  background: linear-gradient(90deg, var(--as-lv1), var(--as-lv2), var(--as-lv1));
  background-size: 200% 100%;
  animation: as-shimmer 2s linear infinite;
}

/* Numbers counter animation */
.as-lp-numbers__value {
  animation: as-count-pulse 2s ease-in-out infinite;
}

/* Navigation link hover */
.as-nav__link { position: relative; }
.as-nav__link::after {
  content: ""; position: absolute; bottom: 0; left: 50%; width: 0; height: 2px;
  background: var(--as-primary); transition: all .2s ease;
  transform: translateX(-50%);
}
.as-nav__link:hover::after { width: 80%; }
.as-nav__item--active .as-nav__link::after { width: 80%; }

/* Quiz choice selection animation */
.as-quiz-choice { transition: all .2s ease; }
.as-quiz-choice:has(input:checked) {
  border-color: var(--as-primary); background: var(--as-primary-light);
  box-shadow: 0 0 0 2px rgba(99,102,241,.15);
}

/* Sidebar chapter item animation */
.as-learn__chapter-item { transition: all .2s ease; }
.as-learn__chapter-item--completed .as-learn__check-icon {
  animation: as-scale-in .3s ease both;
}

/* Alert appear animation */
.as-alert { animation: as-fade-up .4s ease both; }

/* Card stagger in catalog grid */
.as-category-grid .as-category-card:nth-child(1) { animation: as-fade-up .5s ease .0s both; }
.as-category-grid .as-category-card:nth-child(2) { animation: as-fade-up .5s ease .08s both; }
.as-category-grid .as-category-card:nth-child(3) { animation: as-fade-up .5s ease .16s both; }
.as-category-grid .as-category-card:nth-child(4) { animation: as-fade-up .5s ease .24s both; }
.as-category-grid .as-category-card:nth-child(5) { animation: as-fade-up .5s ease .32s both; }
.as-category-grid .as-category-card:nth-child(6) { animation: as-fade-up .5s ease .40s both; }

/* Logo gradient animation */
.as-header__logo-text, .as-lp-nav__logo, .as-login__title, .as-invite__title {
  background-size: 200% 200%;
  animation: as-gradient-shift 4s ease infinite;
}

/* Table row hover */
.as-table tbody tr { transition: background .15s ease; }

/* Smooth page transitions */
.as-main { animation: as-fade-in .3s ease both; }

/* Learn sidebar scroll indicator */
.as-learn__sidebar::-webkit-scrollbar { width: 4px; }
.as-learn__sidebar::-webkit-scrollbar-track { background: transparent; }
.as-learn__sidebar::-webkit-scrollbar-thumb { background: var(--as-300); border-radius: 4px; }

/* Custom scrollbar for quiz */
.as-quiz::-webkit-scrollbar { width: 4px; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {

  /* ── Header & Navigation ── */
  .as-header { height: 52px; }
  .as-header__inner { padding: 0 12px; gap: 8px; }
  .as-nav__list { overflow-x: auto; -webkit-overflow-scrolling: touch; gap: 0; }
  .as-nav__label { display: none; }
  .as-nav__link { padding: 6px 10px; min-height: 44px; display: flex; align-items: center; }
  .as-header__username { display: none; }
  .as-header__logout span { display: none; }
  .as-header__super-link span { display: none; }
  .as-header__user { gap: 6px; }
  .as-notif__dropdown { width: calc(100vw - 24px); right: -40px; max-width: 360px; }

  /* ── Container ── */
  .as-container { padding: 16px 12px; }

  /* ── Learn Page (3カラム → 1カラム) ── */
  .as-learn { flex-direction: column; }
  .as-learn__sidebar {
    width: 100%; position: static; height: auto;
    border-right: none; border-bottom: 1px solid var(--as-200);
    max-height: none; overflow: visible;
  }
  .as-learn__sidebar-header { padding: 12px; }
  .as-learn__chapter-list {
    display: flex; flex-wrap: nowrap; overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: 4px; padding: 0 12px 12px;
  }
  .as-learn__chapter-list li { flex: 0 0 auto; }
  .as-learn__chapter-item {
    white-space: nowrap; padding: 8px 14px;
    border-radius: 20px; font-size: .75rem;
    background: var(--as-50); border: 1px solid var(--as-200);
  }
  .as-learn__chapter-item--active {
    background: var(--as-primary); color: #fff; border-color: var(--as-primary);
  }
  .as-learn__chapter-item--completed { opacity: .7; }
  .as-learn__chapter-number { display: none; }
  .as-learn__check-icon { width: 12px; height: 12px; }

  .as-learn__content {
    padding: 16px 12px; max-width: 100%; min-width: 0;
  }
  .as-learn__hero img { border-radius: 8px; }
  .as-chapter-content { max-width: 100%; }
  .as-chapter-content img { max-width: 100%; height: auto; }
  .as-chapter-content pre { font-size: .75rem; padding: 12px; overflow-x: auto; }
  .as-chapter-content table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .as-chapter-content h1 { font-size: 1.25rem; }
  .as-chapter-content h2 { font-size: 1.125rem; }
  .as-chapter-content h3 { font-size: 1rem; }

  .as-learn__notepad {
    width: 100%; position: static; height: auto;
    border-left: none; border-top: 1px solid var(--as-200);
  }
  .as-notepad { padding: 12px; }
  .as-notepad__textarea { min-height: 100px; }

  .as-chapter-nav { flex-direction: column; gap: 8px; }
  .as-chapter-actions { flex-direction: column; gap: 8px; align-items: stretch; }
  .as-chapter-actions .as-btn { justify-content: center; }

  /* テストモード SP */
  .as-test-mode { flex-direction: column; align-items: flex-start; gap: 6px; padding: 8px 12px; }
  .as-test-mode-active .as-blank { padding: 2px 6px; }

  /* ── Quiz ── */
  .as-quiz { max-width: 100%; padding: 0; }
  .as-quiz-choice { padding: 14px 16px; min-height: 48px; font-size: .875rem; }
  .as-quiz-question__text { font-size: .9375rem; }
  .as-quiz-form__actions { position: sticky; bottom: 0; background: #fff; padding: 12px 0; border-top: 1px solid var(--as-100); z-index: 10; }
  .as-quiz-result-panel { padding: 24px 16px; }
  .as-quiz-explanation { font-size: .8125rem; padding: 10px 12px; }
  .as-breadcrumb { font-size: .75rem; flex-wrap: wrap; }

  /* ── Catalog & Course Detail ── */
  .as-category-grid, .as-course-grid { grid-template-columns: 1fr; gap: 12px; }
  .as-category-header, .as-course-header { flex-direction: column; gap: 16px; }
  .as-category-header__thumb, .as-course-header__thumb { width: 100%; max-width: 100%; }
  .as-page-title { font-size: 1.25rem; }
  .as-page-subtitle { font-size: .8125rem; }

  /* ── Stats ── */
  .as-stats { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .as-stat-card { padding: 14px 12px; }
  .as-stat-card__value { font-size: 1.5rem; }
  .as-stat-card__label { font-size: .6875rem; }

  /* ── Tables ── */
  .as-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 -12px; padding: 0 12px; }
  .as-table { font-size: .75rem; min-width: 560px; }
  .as-table th, .as-table td { padding: 10px 8px; white-space: nowrap; }

  /* ── Admin（派遣企業アカウント） ── */
  .as-page-header { flex-direction: column; align-items: stretch; gap: 8px; }
  .as-page-header .as-btn { width: 100%; justify-content: center; }
  .as-section-header { flex-direction: column; gap: 8px; align-items: stretch; }
  .as-actions { flex-direction: column; gap: 8px; }
  .as-actions .as-btn { width: 100%; justify-content: center; text-align: center; }

  /* 学習者詳細 */
  .as-dl { grid-template-columns: 1fr; gap: 4px; }
  .as-dl dt { font-size: .75rem; color: var(--as-400); }
  .as-dl dd { margin-bottom: 8px; }
  .as-info-card { padding: 16px; }
  .as-card { padding: 16px; }
  .as-card__title { font-size: .9375rem; }

  /* クイズ結果行 */
  .as-attempt-row { flex-wrap: wrap; gap: 6px; padding: 8px 10px; font-size: .75rem; }
  .as-attempt-row__date { min-width: auto; font-size: .6875rem; }

  /* 学習者一覧ヘッダーのバッジ */
  .as-badge { font-size: .625rem; padding: 2px 6px; }

  /* 空状態 */
  .as-empty-state { padding: 40px 16px; }
  .as-empty-state__icon svg { width: 36px; height: 36px; }

  /* ── Mypage ── */
  .as-quick-grid { grid-template-columns: 1fr; }

  /* ── Forms ── */
  .as-form-input, .as-form__textarea, .as-form__input { font-size: 1rem; padding: 12px 14px; min-height: 48px; }
  .as-btn { min-height: 44px; font-size: .875rem; }
  .as-btn--lg { min-height: 48px; padding: 14px 24px; }

  /* ── Login ── */
  .as-login__card { margin: 16px; padding: 24px 20px; max-width: none; }

  /* ── LP ── */
  /* ── LP (トップページ) ── */
  .as-lp-hero { min-height: auto; padding-bottom: 40px; }
  .as-lp-nav { padding: 12px 16px; }
  .as-lp-nav__logo { font-size: 1rem; }
  .as-lp-nav__actions { gap: 12px; }
  .as-lp-nav__link { display: none; }
  .as-lp-hero__container { flex-direction: column; padding: 0 16px 40px; }
  .as-lp-hero__inner { align-items: center; text-align: center; max-width: 100%; }
  .as-lp-hero__label { padding: 4px 14px; font-size: .5625rem; margin-bottom: 20px; }
  .as-lp-hero__title { font-size: clamp(1.75rem, 7vw, 2.5rem); margin-bottom: 16px; }
  .as-lp-hero__subtitle { font-size: .8125rem; line-height: 1.8; margin-bottom: 28px; }
  .as-lp-hero__cta { align-items: center; width: 100%; }
  .as-lp-hero__cta .as-btn { width: 100%; max-width: 320px; padding: 14px 24px; font-size: .875rem; text-align: center; justify-content: center; }
  .as-lp-hero__showcase { display: none; }
  .as-lp-hero__orbit--1 { width: 400px; height: 400px; top: -20%; right: -30%; }
  .as-lp-hero__orbit--2 { width: 280px; height: 280px; bottom: -15%; right: 5%; }
  .as-lp-hero__orbit--3 { width: 160px; height: 160px; top: 20%; right: -5%; }

  .as-lp-numbers__grid { grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 32px 16px; }
  .as-lp-numbers__value { font-size: 2rem; }

  .as-lp-marquee-section { padding: 32px 0; }
  .as-lp-marquee__item { flex: 0 0 160px; }

  .as-lp-section { padding: 48px 0; }
  .as-lp-inner { padding: 0 16px; }
  .as-lp-section__title { font-size: 1.25rem; margin-bottom: 10px; }
  .as-lp-section__sub { font-size: .8125rem; margin-bottom: 32px; line-height: 1.8; }

  .as-lp-skill-path { flex-direction: column; gap: 0; margin-top: 32px; }
  .as-lp-skill-path__item { flex: 0 0 auto; padding: 16px 12px; }
  .as-lp-skill-path__icon { width: 44px; height: 44px; border-radius: 12px; margin-bottom: 8px; }
  .as-lp-skill-path__item h3 { font-size: .8125rem; }
  .as-lp-skill-path__item p { font-size: .625rem; }
  .as-lp-skill-path__arrow { transform: rotate(90deg); }

  .as-lp-features { grid-template-columns: 1fr; gap: 12px; }
  .as-lp-feature-card { padding: 24px 20px; text-align: left; display: flex; gap: 16px; align-items: flex-start; }
  .as-lp-feature-card__icon { width: 48px; height: 48px; border-radius: 12px; margin-bottom: 0; flex-shrink: 0; }
  .as-lp-feature-card h3 { font-size: .9375rem; margin-bottom: 6px; }
  .as-lp-feature-card p { font-size: .75rem; line-height: 1.7; }

  .as-lp-section--dark { padding: 48px 0; }
  .as-lp-section--dark::before { width: 300px; height: 300px; top: -80px; right: -80px; }
  .as-lp-section--dark::after { width: 200px; height: 200px; bottom: -60px; left: -60px; }
  .as-lp-dark-decor__orb--1 { width: 250px; height: 250px; }
  .as-lp-dark-decor__orb--2 { width: 200px; height: 200px; }
  .as-lp-dark-decor__orb--3 { width: 180px; height: 180px; }

  .as-lp-level { margin-bottom: 32px; }
  .as-lp-level__tag { font-size: .5625rem; padding: 4px 14px; margin-bottom: 12px; }
  .as-lp-level__grid { grid-template-columns: 1fr; gap: 10px; }
  .as-lp-cat-card__info { padding: 12px 14px; }
  .as-lp-cat-card__info h3 { font-size: .8125rem; }

  .as-lp-flow { flex-direction: column; gap: 8px; }
  .as-lp-flow__step { flex: 0 0 auto; padding: 20px 16px; }
  .as-lp-flow__num { width: 40px; height: 40px; font-size: 1rem; border-radius: 12px; margin-bottom: 12px; }
  .as-lp-flow__step h4 { font-size: .875rem; }
  .as-lp-flow__step p { font-size: .75rem; }
  .as-lp-flow__arrow { transform: rotate(90deg); flex: 0 0 20px; }

  .as-lp-for-who { grid-template-columns: 1fr; gap: 12px; }
  .as-lp-for-who__card { padding: 24px 20px; }
  .as-lp-for-who__icon { width: 44px; height: 44px; border-radius: 12px; margin-bottom: 12px; }
  .as-lp-for-who__card h3 { font-size: .9375rem; margin-bottom: 12px; }
  .as-lp-for-who__card li { font-size: .75rem; padding: 4px 0; }

  .as-lp-cta { padding: 48px 16px; }
  .as-lp-cta__badge { font-size: .5625rem; padding: 4px 16px; }
  .as-lp-cta h2 { font-size: 1.25rem; line-height: 1.5; }
  .as-lp-cta p { font-size: .8125rem; margin-bottom: 28px; }
  .as-lp-cta__btn { padding: 14px 32px !important; font-size: .875rem !important; width: 100%; max-width: 320px; }
  .as-lp-cta__orbit--1 { width: 280px; height: 280px; }
  .as-lp-cta__orbit--2 { width: 200px; height: 200px; }
  .as-lp-cta__stats { gap: 16px; flex-wrap: wrap; justify-content: center; }
  .as-lp-cta__stat-num { font-size: 1.25rem; }
  .as-lp-cta__stat-sep { height: 24px; }

  .as-lp-footer { padding: 20px 16px; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .as-category-grid, .as-course-grid { grid-template-columns: repeat(2, 1fr); }
  .as-lp-curriculum { grid-template-columns: repeat(2, 1fr); }
  .as-learn__sidebar { width: 220px; }
  .as-learn__notepad { width: 220px; }
  .as-learn__content { padding: 32px 24px; }
  .as-stats { grid-template-columns: repeat(2, 1fr); }
  .as-course-header__thumb { width: 240px; }
}

/* ── Very small screens (≤ 380px) ── */
@media (max-width: 380px) {
  .as-stats { grid-template-columns: 1fr; }
  .as-lp-numbers__grid { grid-template-columns: 1fr; }
  .as-header__inner { padding: 0 8px; }
  .as-container { padding: 12px 8px; }
  .as-notif__dropdown { width: calc(100vw - 16px); right: -20px; }
}

/* ============================================================
   Test Mode (虫食い学習)
   ============================================================ */
.as-test-mode {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding: 10px 16px;
  background: var(--as-50);
  border-radius: 8px;
  border: 1px solid var(--as-200);
}
.as-test-mode__toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--as-300);
  background: #fff;
  font-size: .8125rem;
  font-weight: 600;
  color: var(--as-600);
  cursor: pointer;
  transition: all .2s;
}
.as-test-mode__toggle:hover {
  border-color: var(--as-primary);
  color: var(--as-primary);
}
.as-test-mode__toggle.is-active {
  background: var(--as-primary);
  border-color: var(--as-primary);
  color: #fff;
}
.as-test-mode__hint {
  font-size: .75rem;
  color: var(--as-500);
}

/* Blank (hidden keyword) */
.as-blank {
  transition: all .2s;
}
.as-test-mode-active .as-blank {
  background: var(--as-800);
  color: transparent;
  border-radius: 3px;
  padding: 1px 4px;
  cursor: pointer;
  user-select: none;
}
.as-test-mode-active .as-blank:hover {
  background: var(--as-200);
  color: transparent;
}
.as-test-mode-active .as-blank.is-revealed {
  background: var(--as-lv2-light, #dcfce7);
  color: var(--as-lv2, #16a34a);
  font-weight: 600;
}

/* Highlight (重要文の下線) */
.as-highlight {
  background: linear-gradient(transparent 60%, rgba(59, 130, 246, 0.15) 60%);
  padding: 0 2px;
  font-weight: 600;
}