/* ===== 重置 & 變數 ===== */
:root {
  --bg: #0a0a0f;
  --bg-2: #12121a;
  --bg-3: #1a1a2e;
  --accent: #FFD700;
  --accent-2: #00d4ff;
  --accent-3: #FF4444;
  --accent-green: #00ff88;
  --text: #f0f0f5;
  --text-2: #b0b0c0;
  --text-3: #606070;
  --glass: rgba(255,255,255,0.04);
  --glass-border: rgba(255,255,255,0.08);
  --glass-border-hover: rgba(255,215,0,0.2);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans SC', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

button, select { font: inherit; }

#particleCanvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.4;
}

/* ===== 導覽列 ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}
.navbar.scrolled {
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 10px 0;
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo img {
  height: 40px;
  filter: drop-shadow(0 0 8px rgba(255,215,0,0.3));
}

.nav-menu {
  display: flex;
  gap: 32px;
  list-style: none;
}
.nav-menu a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}
.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: var(--transition);
}
.nav-menu a:hover { color: var(--accent); }
.nav-menu a:hover::after { width: 100%; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-bg-glow {
  position: absolute;
  top: 20%; right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(255,215,0,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  animation: floatSlow 8s ease-in-out infinite;
}

@keyframes floatSlow {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-30px, 30px) scale(1.1); }
}

.hero-content {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-left {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.hero-right {
  display: flex;
  flex-direction: column;
  gap: 32px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255,215,0,0.1);
  border: 1px solid rgba(255,215,0,0.3);
  border-radius: 100px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(48px, 6vw, 80px);
  line-height: 1.05;
  margin-bottom: 24px;
}
.hero-line-1 {
  display: block;
  color: var(--text);
  font-weight: 400;
}
.hero-line-2 {
  display: block;
  background: linear-gradient(135deg, #FFD700 0%, #FF8C00 50%, #FF4444 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  text-shadow: 0 0 40px rgba(255,215,0,0.2);
}

.hero-subtitle {
  color: var(--text-2);
  font-size: 18px;
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 500px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  padding: 14px 32px;
  background: linear-gradient(135deg, #FFD700 0%, #FF8C00 100%);
  color: #0a0a0f;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 100px;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(255,215,0,0.3);
  display: inline-flex;
  align-items: center;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255,215,0,0.5);
}

.btn-ghost {
  padding: 14px 32px;
  background: transparent;
  color: var(--text);
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  border-radius: 100px;
  border: 1px solid var(--glass-border);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
}
.btn-ghost:hover {
  background: var(--glass);
  border-color: var(--accent);
  color: var(--accent);
}

/* 吉祥物 */
.hero-mascot {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.mascot-img {
  max-width: 100%;
  max-height: 400px;
  width: auto;
  height: auto;
  filter: drop-shadow(0 10px 40px rgba(255,215,0,0.2));
  animation: mascotFloat 4s ease-in-out infinite;
}
@keyframes mascotFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}
.mascot-glow {
  position: absolute;
  bottom: 10%; left: 50%;
  transform: translateX(-50%);
  width: 300px; height: 40px;
  background: radial-gradient(ellipse, rgba(255,215,0,0.15) 0%, transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}

/* Hero 进度看板 */
.hero-board {
  width: 100%;
  max-width: 420px;
  margin: 0;
  padding: 24px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
}

.board-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
}
.board-top span {
  color: var(--text-2);
  font-size: 14px;
  font-weight: 700;
}
.board-top strong {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 28px;
  color: var(--accent);
}

.progress-track {
  width: 100%;
  height: 8px;
  margin: 12px 0 16px;
  overflow: hidden;
  border-radius: 100px;
  background: rgba(255,255,255,0.08);
}
.progress-track span {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.3s ease;
}

.artifact-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 10px;
}
.artifact-list span {
  min-height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.03);
  font-weight: 600;
  font-size: 14px;
  color: var(--text-2);
}

.board-note {
  margin-top: 14px;
  padding: 16px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(0,212,255,0.1), rgba(255,215,0,0.05));
  border: 1px solid rgba(0,212,255,0.2);
}
.board-note strong {
  font-size: 14px;
  color: var(--accent-2);
}
.board-note p {
  margin-top: 6px;
  color: var(--text-2);
  font-size: 15px;
}

/* ===== Section 通用 ===== */
section {
  position: relative;
  z-index: 1;
  padding: 100px 24px;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 60px;
}

.section-header-split {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 24px;
  align-items: end;
  max-width: 1100px;
  text-align: left;
}

.section-label {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 16px;
  padding: 6px 16px;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 100px;
}

.section-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.15;
  margin-bottom: 16px;
  color: var(--text);
}

.section-title .accent {
  background: linear-gradient(135deg, #FFD700 0%, #FF8C00 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  color: var(--text-2);
  font-size: 16px;
}

/* ===== 课程目标 ===== */
.intro-section {
  text-align: center;
}
.intro-text {
  max-width: 700px;
  margin: 0 auto;
  color: var(--text-2);
  font-size: 18px;
  line-height: 1.8;
}

/* ===== 正确流程 ===== */
.workflow-section {
  background: linear-gradient(180deg, transparent 0%, rgba(18,18,26,0.5) 50%, transparent 100%);
}

.intro-flow {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.flow-step {
  flex: 1;
  min-width: 260px;
  max-width: 320px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
}
.flow-step:hover {
  border-color: var(--glass-border-hover);
  transform: translateY(-4px);
  box-shadow: 0 10px 40px rgba(255,215,0,0.08);
}

.flow-step-num {
  display: inline-grid;
  place-items: center;
  width: 36px; height: 36px;
  border-radius: 8px;
  color: #fff;
  background: var(--accent-3);
  font-weight: 900;
  font-size: 16px;
  margin-bottom: 16px;
}

.flow-icon {
  color: var(--accent);
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
}

.flow-step h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.flow-step p {
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.7;
}

.flow-arrow {
  display: flex;
  align-items: center;
  color: var(--accent);
  opacity: 0.5;
}

.video-note {
  max-width: 900px;
  margin: 32px auto 0;
  padding: 24px;
  background: rgba(255,140,0,0.05);
  border: 1px solid rgba(255,140,0,0.2);
  border-left: 4px solid #FF8C00;
  border-radius: var(--radius-sm);
}
.video-note h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--accent);
}
.video-note p {
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.8;
}

/* ===== 新手入口 ===== */
.start-section {
  background: var(--bg-2);
}

.start-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.start-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  transition: var(--transition);
}
.start-card:hover {
  border-color: var(--glass-border-hover);
  transform: translateY(-4px);
}

.start-card .flow-step-num {
  margin: 0 auto 16px;
}

.start-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.start-card p {
  color: var(--text-2);
  font-size: 15px;
  margin-bottom: 16px;
}

.btn-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background: rgba(255,215,0,0.1);
  border: 1px solid rgba(255,215,0,0.3);
  border-radius: 100px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-link:hover {
  background: rgba(255,215,0,0.2);
  transform: translateY(-2px);
}

/* ===== 智能体重点 ===== */
.agent-section {
  background: linear-gradient(180deg, transparent 0%, rgba(18,18,26,0.5) 50%, transparent 100%);
}

/* 提示词区块通用 */
.prompt-wide {
  max-width: 900px;
  margin: 0 auto 24px;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.prompt-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 20px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--glass-border);
}
.prompt-top h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0;
}

.prompt-code {
  margin: 0;
  padding: 20px;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-2);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 500px;
  overflow-y: auto;
}

.utility-prompts {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.prompt-box {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}

.prompt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--glass-border);
}
.prompt-label {
  font-size: 14px;
  color: var(--text-3);
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,215,0,0.1);
  border: 1px solid rgba(255,215,0,0.2);
  color: var(--accent);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  -webkit-tap-highlight-color: transparent;
}
.copy-btn:hover {
  background: rgba(255,215,0,0.2);
}
.copy-btn.copied {
  background: rgba(0,255,136,0.15);
  border-color: rgba(0,255,136,0.3);
  color: var(--accent-green);
}

/* ===== 行业选择器 ===== */
.industry-setup-section {
  background: var(--bg-2);
}

.industry-picker {
  max-width: 900px;
  margin: 0 auto 24px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 24px;
  align-items: center;
  padding: 24px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
}

.industry-picker-info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--accent);
}

.industry-picker-info p {
  color: var(--text-2);
  font-size: 15px;
}

.industry-select {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  background: var(--bg-3);
  color: var(--text);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  outline: none;
  transition: var(--transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' fill='none' stroke='%23FFD700' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 44px;
}
.industry-select:hover, .industry-select:focus {
  border-color: var(--accent);
}

.industry-solution {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px;
  background: var(--glass);
  border: 1px solid rgba(255,215,0,0.15);
  border-radius: var(--radius);
  animation: slideUp 0.4s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.industry-solution h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 12px;
}

.solution-item {
  padding: 14px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  text-align: center;
}
.solution-item strong {
  display: block;
  margin-bottom: 6px;
  color: var(--accent-2);
  font-size: 13px;
}
.solution-item span {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.55;
}

/* ===== 7 天课程 ===== */
.curriculum-section {
  background: linear-gradient(180deg, transparent 0%, rgba(18,18,26,0.5) 50%, transparent 100%);
}

.progress-card {
  padding: 20px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  text-align: center;
  min-width: 200px;
}
.progress-card span {
  display: block;
  color: var(--text-2);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
}
.progress-card strong {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 32px;
  color: var(--accent);
}

.course-list {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  gap: 24px;
}

.day-card {
  display: grid;
  grid-template-columns: 200px 1fr;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.day-card:hover {
  border-color: var(--glass-border-hover);
  box-shadow: 0 10px 40px rgba(255,215,0,0.05);
}

.day-meta {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  background: var(--bg-3);
  border-right: 1px solid var(--glass-border);
}
.day-meta span {
  color: var(--text-3);
  font-size: 14px;
  font-weight: 700;
}
.day-meta strong {
  font-size: 22px;
  line-height: 1.2;
  color: var(--text);
}

.agent-day .day-meta {
  background: linear-gradient(135deg, rgba(0,212,255,0.15), rgba(255,215,0,0.05));
}

.day-content {
  padding: 24px;
}

.course-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}
.day-content h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
}
.day-content > .day-content > p,
.case-strip-text {
  color: var(--text-2);
  font-size: 15px;
}

.done-btn {
  padding: 8px 20px;
  border: none;
  border-radius: 100px;
  background: rgba(255,255,255,0.08);
  color: var(--text-2);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.done-btn:hover {
  background: rgba(255,255,255,0.12);
}
.done-btn.completed {
  background: rgba(0,255,136,0.15);
  border: 1px solid rgba(0,255,136,0.3);
  color: var(--accent-green);
}

.case-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 16px 0;
}

.mini-card {
  padding: 14px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
}
.mini-card strong {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--accent-2);
}
.mini-card p {
  margin: 0;
  font-size: 14px;
  color: var(--text-2);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 16px;
}
.tag-row span {
  padding: 6px 12px;
  border-radius: 100px;
  background: rgba(0,212,255,0.08);
  color: var(--accent-2);
  font-size: 13px;
  border: 1px solid rgba(0,212,255,0.15);
}

.prompt-grid {
  display: grid;
  gap: 12px;
}

.prompt-grid .prompt-box {
  background: rgba(0,0,0,0.25);
}

.prompt-grid .prompt-box .copy-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
}

.prompt-grid .prompt-header {
  padding: 12px 100px 12px 16px;
}

.instruction-box {
  background: rgba(0,212,255,0.03) !important;
  border-style: dashed !important;
}

.instruction-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin: 12px 12px 0;
  padding: 0 10px;
  border-radius: 6px;
  color: var(--accent-2);
  background: rgba(0,212,255,0.1);
  font-size: 13px;
  font-weight: 700;
}

.prompt-grid .instruction-box .prompt-header {
  padding: 12px 16px;
}

.prompt-grid .instruction-box h4 {
  margin: 0;
  padding: 0 16px 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.prompt-grid h4 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.assignment {
  margin-top: 16px;
  padding: 16px;
  border-left: 4px solid var(--accent-3);
  border-radius: var(--radius-sm);
  background: rgba(255,68,68,0.05);
}
.assignment strong {
  display: block;
  margin-bottom: 6px;
  color: var(--accent-3);
  font-size: 14px;
}
.assignment p {
  margin: 0;
  color: var(--text-2);
  font-size: 15px;
}

/* 行業切換過渡 */
.day-card {
  animation: cardFadeIn 0.4s ease;
}
@keyframes cardFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 提示詞展開/收起 */
.prompt-code {
  margin: 0;
  padding: 20px;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-2);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 500px;
  overflow-y: auto;
  transition: max-height 0.3s ease;
}
.prompt-code.collapsed {
  max-height: 120px;
  overflow: hidden;
  position: relative;
}
.prompt-code.collapsed::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 40px;
  background: linear-gradient(transparent, rgba(0,0,0,0.4));
  pointer-events: none;
}
.expand-btn {
  display: block;
  width: 100%;
  padding: 8px;
  background: rgba(255,255,255,0.03);
  border: none;
  border-top: 1px solid var(--glass-border);
  color: var(--accent-2);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
  -webkit-tap-highlight-color: transparent;
}
.expand-btn:hover {
  background: rgba(0,212,255,0.08);
}

/* 百業地圖標籤可點擊 */
.industry-list li {
  cursor: pointer;
}

.industry-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.industry-group {
  padding: 24px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.industry-group:hover {
  border-color: rgba(255,215,0,0.15);
}

.industry-group h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.industry-group h3::before {
  content: '';
  width: 4px; height: 20px;
  background: var(--accent);
  border-radius: 2px;
}

.industry-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}
.industry-list li {
  padding: 8px 12px;
  border-radius: 100px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  color: var(--text-2);
  font-size: 14px;
  transition: var(--transition);
}
.industry-list li:hover {
  border-color: rgba(255,215,0,0.2);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ===== 结业发布 ===== */
.publish-section {
  background: linear-gradient(180deg, transparent 0%, rgba(18,18,26,0.5) 50%, transparent 100%);
}

.publish-layout {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
  align-items: start;
}

.publish-checklist {
  padding: 28px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
}
.publish-checklist h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 20px;
}

.check-list {
  display: grid;
  gap: 12px;
  list-style: none;
}
.check-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  color: var(--text-2);
  font-size: 15px;
}
.check-list li svg {
  color: var(--accent-green);
  flex-shrink: 0;
  opacity: 0.3;
  transition: opacity 0.3s ease;
}
.check-list li.checked svg {
  opacity: 1;
}

/* ===== Footer ===== */
.footer {
  position: relative;
  z-index: 1;
  padding: 60px 24px 40px;
  background: var(--bg);
  border-top: 1px solid var(--glass-border);
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
}

.footer-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.footer-logo-item img {
  max-height: 60px;
  max-width: 200px;
  filter: drop-shadow(0 0 8px rgba(255,215,0,0.1));
  opacity: 0.85;
}

.footer-tags {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.footer-tags span {
  font-size: 14px;
  color: var(--accent);
  opacity: 0.7;
}

.footer-copy {
  font-size: 14px;
  color: var(--text-3);
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 30px; left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 12px 24px;
  background: rgba(10,10,15,0.95);
  border: 1px solid var(--accent);
  border-radius: 100px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 500;
  z-index: 9999;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
  backdrop-filter: blur(10px);
}
.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ===== 回顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 30px; right: 30px;
  width: 44px; height: 44px;
  background: rgba(255,215,0,0.1);
  border: 1px solid rgba(255,215,0,0.3);
  border-radius: 50%;
  color: var(--accent);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}
.back-to-top.show { opacity: 1; }
.back-to-top:hover {
  background: rgba(255,215,0,0.2);
  transform: translateY(-2px);
}

/* ===== 響應式 ===== */
@media (max-width: 968px) {
  .nav-menu {
    display: flex;
    position: fixed;
    top: 70px; left: 0; right: 0;
    flex-direction: column;
    background: rgba(10,10,15,0.95);
    backdrop-filter: blur(20px);
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--glass-border);
    transform: translateY(-200%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-toggle { display: flex; }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  .hero-text { order: 2; }
  .hero-mascot { order: 1; }
  .mascot-img { max-height: 280px; }
  .hero-cta { justify-content: center; }
  .hero-badge { margin-left: auto; margin-right: auto; }

  .section-header-split {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .progress-card { margin: 0 auto; }

  .intro-flow { flex-direction: column; align-items: center; }
  .flow-arrow { transform: rotate(90deg); }

  .start-grid, .utility-prompts { grid-template-columns: 1fr; }

  .industry-picker { grid-template-columns: 1fr; }

  .solution-grid { grid-template-columns: repeat(2, 1fr); }

  .day-card { grid-template-columns: 1fr; }
  .day-meta {
    border-right: none;
    border-bottom: 1px solid var(--glass-border);
    flex-direction: row;
    align-items: center;
    gap: 16px;
  }

  .case-strip { grid-template-columns: 1fr; }

  .industry-grid { grid-template-columns: 1fr; }

  .publish-layout { grid-template-columns: 1fr; }
}

/* ===== 無障礙：降級動畫 ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  #particleCanvas { display: none; }
}

@media (max-width: 480px) {
  section { padding: 60px 16px; }
  .hero { padding: 100px 16px 60px; }
  .mascot-img { max-height: 220px; }
  .day-card .day-content { padding: 16px; }
  .day-meta { padding: 16px; }
  .prompt-grid .prompt-header { padding: 12px 90px 12px 14px; }
  .footer-logos { gap: 20px; }
  .footer-logo-item img { max-height: 40px; }
  .artifact-list { grid-template-columns: 1fr; }
  .solution-grid { grid-template-columns: 1fr; }
  .course-card-top { flex-direction: column; }
}