/* =============================================
   DESIGN TOKENS — Claude 风格（来自 getdesign@latest add claude）
   ============================================= */
:root {
  /* ── 背景：Claude Parchment 羊皮纸系 ── */
  --bg-primary: #f5f4ed;       /* Parchment — 温暖羊皮纸，Claude 核心背景 */
  --bg-secondary: #f0eee6;     /* Border Cream — 次级分区背景 */
  --bg-card: #faf9f5;          /* Ivory — 卡片表面 */
  --bg-card-hover: #f0eee6;    /* Border Cream — 卡片 hover */

  /* ── 强调色：双轨策略 ── */
  --accent-blue: #2563eb;      /* 蓝色保留：CTA 按钮、外链（行动性元素）*/
  --accent-purple: #7c3aed;
  --accent-cyan: #0891b2;
  --accent-green: #059669;
  --accent-clay: #c96442;      /* 陶土色：section-label、观点边框（思想性元素）*/
  --accent-coral: #d97757;     /* 珊瑚次色：链接 hover 点缀 */

  /* ── 文字：Claude 暖灰系（无冷蓝灰）── */
  --text-primary: #141413;     /* Near Black — 主文字 */
  --text-secondary: #5e5d59;   /* Olive Gray — 次要文字 */
  --text-muted: #87867f;       /* Stone Gray — 三级文字、时间戳 */

  /* ── 边框 ── */
  --border: #f0eee6;           /* Border Cream — 轻边框 */
  --border-warm: #e8e6dc;      /* Border Warm — 重边框、分割线 */
  --border-hover: rgba(201, 100, 66, 0.4);  /* clay hover 边框 */

  --grad-primary: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  --grad-text: var(--accent-blue);

  --accent-yellow: #d97706;
  --accent-red: #dc2626;

  /* ── 阴影：Claude ring shadow 风格 ── */
  --shadow-glow: 0 0 0 1px #e8e6dc;              /* ring shadow */
  --shadow-card: rgba(0, 0, 0, 0.05) 0px 4px 24px;  /* whisper shadow */

  /* ── 圆角 ── */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 32px;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Libre Baskerville', Georgia, serif;  /* 衬线字体：标题使用 */

  /* ── Alpha 系列（蓝色，用于行动性元素）── */
  --accent-blue-06: rgba(37, 99, 235, 0.06);
  --accent-blue-08: rgba(37, 99, 235, 0.08);
  --accent-blue-10: rgba(37, 99, 235, 0.10);
  --accent-blue-12: rgba(37, 99, 235, 0.12);
  --accent-blue-15: rgba(37, 99, 235, 0.15);
  --accent-blue-20: rgba(37, 99, 235, 0.20);
  --accent-blue-25: rgba(37, 99, 235, 0.25);
  --accent-blue-30: rgba(37, 99, 235, 0.30);
  --accent-blue-35: rgba(37, 99, 235, 0.35);
  --accent-blue-40: rgba(37, 99, 235, 0.40);
  --accent-blue-50: rgba(37, 99, 235, 0.50);

  /* ── Alpha 系列（陶土色，用于思想性元素）── */
  --accent-clay-06: rgba(201, 100, 66, 0.06);
  --accent-clay-10: rgba(201, 100, 66, 0.10);
  --accent-clay-15: rgba(201, 100, 66, 0.15);
  --accent-clay-25: rgba(201, 100, 66, 0.25);
  --accent-clay-35: rgba(201, 100, 66, 0.35);

  /* 深色文字（用于渐变背景上）*/
  --text-on-gradient: #ffffff;
}

/* =============================================
   RESET & BASE
   ============================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

img {
  max-width: 100%;
  display: block;
}

button {
  cursor: pointer;
  font-family: var(--font);
  border: none;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 112px 0;
}

/* =============================================
   GRADIENT TEXT
   ============================================= */
.grad-text {
  color: var(--accent-clay);
  font-style: italic;
}

/* =============================================
   GLASS CARD
   ============================================= */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.glass-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-blue);
  color: #ffffff;
  box-shadow: none;
}

.btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: var(--accent-blue-08);
}

/* =============================================
   NAVBAR
   ============================================= */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: rgba(245, 244, 237, 0.97);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 1.1rem;
  font-weight: 700;
}

.logo-text {
  color: var(--text-primary);
}

.logo-dot {
  color: var(--accent-blue);
  font-size: 1.5rem;
  line-height: 1;
  margin: 0 2px;
}

.logo-sub {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 400;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-blue);
  border-radius: 2px;
  transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* =============================================
   HERO
   ============================================= */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-grid {
  display: none;
}

.hero-glow {
  display: none;
}

.hero-deco-char {
  position: absolute;
  right: -1vw;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-serif);
  font-size: clamp(20rem, 38vw, 32rem);
  font-weight: 700;
  font-style: italic;
  color: var(--accent-clay);
  opacity: 0.045;
  pointer-events: none;
  user-select: none;
  line-height: 1;
  z-index: 0;
}






.hero-content {
  position: relative;
  z-index: 1;
  text-align: left;
  max-width: 1100px;
  width: 100%;
  padding: 0 24px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--accent-blue-10);
  border: 1px solid var(--accent-blue-30);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--accent-blue);
  margin-bottom: 28px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.5;
    transform: scale(0.8);
  }
}

.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-clay);
  margin-bottom: 20px;
  opacity: 0.9;
}

.hero-title {
  font-size: clamp(3.5rem, 8vw, 6.5rem);
  font-weight: 700;
  font-family: var(--font-serif);
  line-height: 1.05;
  margin-bottom: 32px;
  letter-spacing: -0.03em;
  max-width: 700px;
}

.hero-sub {
  font-size: clamp(0.95rem, 1.8vw, 1.08rem);
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.7;
  max-width: 500px;
}

.hero-manifesto {
  font-size: clamp(0.88rem, 1.4vw, 0.98rem);
  color: var(--accent-clay);
  font-family: var(--font-serif);
  font-style: italic;
  margin-bottom: 40px;
  max-width: 500px;
  opacity: 0.75;
}

.hero-value {
  font-size: clamp(1rem, 2vw, 1.1rem);
  color: var(--accent-blue);
  margin-bottom: 28px;
  opacity: 0.9;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
}

.tag {
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.tag:hover {
  border-color: var(--accent-blue);
  color: var(--text-primary);
  background: var(--accent-blue-08);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: flex-start;
  flex-wrap: wrap;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s ease-in-out infinite;
}

.scroll-mouse {
  width: 24px;
  height: 36px;
  border: 2px solid var(--text-muted);
  border-radius: 20px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-wheel {
  width: 4px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 2px;
  animation: scrollDown 1.5s ease-in-out infinite;
}

@keyframes scrollDown {

  0%,
  100% {
    opacity: 1;
    transform: translateY(0);
  }

  50% {
    opacity: 0;
    transform: translateY(6px);
  }
}

@keyframes bounce {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(-8px);
  }
}

/* =============================================
   SECTION COMMON
   ============================================= */
.section-header {
  text-align: left;
  margin-bottom: 56px;
}

.section-header .section-desc {
  margin: 0;
}

.section-header--center {
  text-align: center;
}

.section-header--center .section-desc {
  margin: 0 auto;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-clay);
  background: var(--accent-clay-06);
  border: 1px solid var(--accent-clay-25);
  border-radius: 50px;
  padding: 5px 16px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  font-family: var(--font-serif);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0;
}

/* =============================================
   ABOUT
   ============================================= */
.about-section {
  background: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.about-card {
  padding: 36px;
  text-align: center;
}

.about-avatar {
  position: relative;
  display: inline-block;
  margin-bottom: 24px;
}

.avatar-inner {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-on-gradient);
  position: relative;
  z-index: 1;
}

.avatar-ring {
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--accent-blue);
  z-index: 0;
  opacity: 0.2;
}

.about-info h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.about-role {
  color: var(--accent-blue);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 24px;
}

.about-stats {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

.about-philosophy {
  padding: 20px;
  background: var(--accent-blue-06);
  border: 1px solid var(--accent-blue-15);
  border-radius: var(--radius-md);
}

.philosophy-quote {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-style: italic;
}

.quote-mark {
  color: var(--accent-blue);
  font-size: 1.5rem;
  line-height: 0;
  vertical-align: -0.25em;
}

.about-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  margin-top: 4px;
}

.about-contact-link {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

.about-contact-link:hover {
  color: var(--text-primary);
}

.about-right {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-bio {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.bio-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.bio-label {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
  background: var(--accent-blue-10);
  border: 1px solid var(--accent-blue-20);
  padding: 3px 8px;
  border-radius: 4px;
  margin-top: 2px;
}

.bio-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.skill-tag {
  padding: 6px 14px;
  background: rgba(155, 109, 255, 0.1);
  border: 1px solid rgba(155, 109, 255, 0.25);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--accent-purple);
  transition: all var(--transition);
}

.skill-tag:hover {
  background: rgba(155, 109, 255, 0.2);
  transform: translateY(-2px);
}

/* =============================================
   CASES
   ============================================= */
.cases-section {
  background: var(--bg-primary);
}

.cases-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
  margin-bottom: 32px;
}

.case-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 16px;
  border-bottom: 1px solid var(--border);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition);
  cursor: default;
}

.case-row:hover {
  background: var(--bg-secondary);
  border-color: var(--border-warm);
}

.case-row-icon {
  font-size: 1.4rem;
  width: 40px;
  text-align: center;
  flex-shrink: 0;
  padding-top: 2px;
}

.case-row-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.case-row-tag {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-clay);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.case-row-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin: 0;
}

.case-row-desc {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: 2px;
}

.case-row-metrics {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.case-row-arrow {
  font-size: 0.9rem;
  color: var(--text-muted);
  flex-shrink: 0;
  padding-top: 4px;
  transition: color var(--transition), transform var(--transition);
}

.case-row:hover .case-row-arrow {
  color: var(--accent-clay);
  transform: translate(2px, -2px);
}

/* ── Case Detail Expand ── */
.case-detail-btn {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.8rem;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
}

.case-detail-btn:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.case-detail-btn .btn-arrow {
  transition: transform var(--transition);
  font-style: normal;
  display: inline-block;
}

.case-detail-btn.open .btn-arrow {
  transform: rotate(180deg);
}

.case-detail-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.case-detail-body.open {
  max-height: 800px;
}

.case-detail-inner {
  padding-top: 20px;
  border-top: 1px solid var(--border);
  margin-top: 20px;
}

.detail-section {
  margin-bottom: 16px;
}

.detail-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.detail-points {
  list-style: none;
  padding: 0;
  margin: 0;
}

.detail-points li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  padding-left: 14px;
  position: relative;
  margin-bottom: 4px;
}

.detail-points li::before {
  content: '·';
  position: absolute;
  left: 2px;
  color: var(--accent-blue);
  font-weight: 700;
}

.detail-points li b {
  color: var(--text-primary);
}

.detail-demo-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 0.82rem;
  color: var(--accent-blue);
  text-decoration: none;
  border: 1px solid var(--accent-blue-30);
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.detail-demo-link:hover {
  background: var(--accent-blue-10);
}

.cases-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 16px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
}

/* =============================================
   TOOLS SECTION
   ============================================= */
.tools-section {
  background: var(--bg-secondary);
}

.tool-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.tool-tab {
  padding: 12px 24px;
  border-radius: 50px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.tool-tab:hover {
  border-color: var(--accent-blue);
  color: var(--text-primary);
}

.tool-tab.active {
  background: var(--grad-primary);
  border-color: transparent;
  color: var(--text-on-gradient);
  box-shadow: 0 4px 20px var(--accent-blue-30);
}

.tab-group-label {
  display: flex;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0 4px;
  white-space: nowrap;
  align-self: center;
}

.tab-group-label:not(:first-child) {
  margin-left: 8px;
}

.tool-panel {
  display: block;
}

.tool-panel.hidden {
  display: none;
}

/* ----- Interview Tool ----- */
.interview-tool {
  padding: 36px;
}

.tool-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
  gap: 20px;
  flex-wrap: wrap;
}

.tool-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.tool-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.tool-progress-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.progress-ring-container {
  position: relative;
  width: 60px;
  height: 60px;
}

.progress-ring-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 4;
}

.progress-ring-fill {
  fill: none;
  stroke: url(#progressGrad);
  stroke-width: 4;
  stroke-linecap: round;
  transform-origin: center;
  transform: rotate(-90deg);
  stroke-dasharray: 150.8;
  stroke-dashoffset: 150.8;
  transition: stroke-dashoffset 0.5s ease;
}

.progress-ring-label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent-blue);
}

.progress-text {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
}

/* Category grid */
.category-select {}

.category-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.category-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.category-btn {
  padding: 10px 20px;
  border-radius: 50px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.88rem;
  transition: all var(--transition);
}

.category-btn:hover {
  border-color: var(--accent-blue);
  color: var(--text-primary);
}

.category-btn.active {
  background: var(--accent-blue-12);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.start-btn {
  margin-top: 8px;
}

/* Question */
.question-area.hidden,
.result-area.hidden,
.hidden {
  display: none !important;
}

.question-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.q-category {
  padding: 4px 12px;
  background: var(--accent-blue-12);
  border: 1px solid var(--accent-blue-25);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--accent-blue);
}

.q-difficulty {
  font-size: 0.85rem;
  color: var(--accent-yellow);
}

.timer-box {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50px;
  border: 1px solid var(--border);
}

.timer-icon {
  font-size: 0.85rem;
}

.timer-display {
  font-size: 0.9rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent-cyan);
}

.question-number {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.question-text {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.7;
  color: var(--text-primary);
  padding: 28px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-blue);
  margin-bottom: 20px;
}

.answer-area {
  padding: 24px;
  background: rgba(0, 229, 160, 0.06);
  border: 1px solid rgba(0, 229, 160, 0.2);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.answer-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-green);
  margin-bottom: 12px;
}

.answer-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  white-space: pre-line;
}

.self-rate {
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.rate-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.rate-stars {
  display: flex;
  gap: 4px;
}

.star-btn {
  background: none;
  font-size: 1.4rem;
  color: var(--text-muted);
  transition: color var(--transition), transform var(--transition);
  line-height: 1;
}

.star-btn:hover,
.star-btn.active {
  color: var(--accent-yellow);
  transform: scale(1.2);
}

.question-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Result */
.result-area {
  text-align: center;
  padding: 40px 20px;
  animation: fadeIn 0.5s ease;
}

.result-icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
}

.result-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 32px;
}

.result-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.result-stat {
  text-align: center;
}

.result-stat-num {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ----- Tracker Tool ----- */
.tracker-tool {
  padding: 36px;
}

.tracker-stats {
  display: flex;
  gap: 20px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.t-stat {
  flex: 1;
  min-width: 80px;
  text-align: center;
  padding: 16px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.t-stat span {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.t-stat label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.tracker-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tracker-empty {
  text-align: center;
  padding: 48px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.tracker-empty span {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 12px;
}

.tracker-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  animation: fadeIn 0.3s ease;
}

.tracker-item:hover {
  border-color: var(--border-hover);
}

.tracker-item-info {
  flex: 1;
}

.tracker-company {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.tracker-position {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.tracker-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.tracker-status {
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  flex-shrink: 0;
}

.status-submitted {
  background: var(--accent-blue-15);
  color: var(--accent-blue);
}

.status-test {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-yellow);
}

.status-interview {
  background: rgba(155, 109, 255, 0.15);
  color: var(--accent-purple);
}

.status-offer {
  background: rgba(0, 229, 160, 0.15);
  color: var(--accent-green);
}

.status-rejected {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
}

.tracker-delete {
  background: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  padding: 4px 8px;
  border-radius: 6px;
  transition: all var(--transition);
}

.tracker-delete:hover {
  color: var(--accent-red);
  background: rgba(239, 68, 68, 0.1); /* --accent-red */
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  animation: fadeIn 0.2s ease;
}

.modal {
  width: 100%;
  max-width: 440px;
  padding: 36px;
  margin: 20px;
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 6px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.9rem;
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px var(--accent-blue-15);
}

.form-group select option {
  background: var(--bg-secondary);
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 24px;
}

/* =============================================
   CONTACT
   ============================================= */
.contact-section {
  background: var(--bg-secondary);
  padding: 80px 0;
}

.contact-body {
  max-width: 680px;
}

.contact-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-clay);
  margin-bottom: 20px;
  opacity: 0.9;
}

.contact-title {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 700;
  font-family: var(--font-serif);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.contact-sub {
  color: var(--text-secondary);
  margin-bottom: 48px;
  font-size: 1rem;
  line-height: 1.7;
}

.contact-links {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 12px 32px;
  align-items: center;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition);
  text-decoration: none;
}

.contact-link:hover {
  color: var(--text-primary);
}

.contact-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-clay);
  opacity: 0.75;
  min-width: 36px;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer p {
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-bottom: 4px;
}

.footer-sub {
  font-size: 0.75rem !important;
}

/* =============================================
   REVEAL ANIMATIONS
   ============================================= */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 {
  transition-delay: 0.1s;
}

.delay-2 {
  transition-delay: 0.2s;
}

.delay-3 {
  transition-delay: 0.3s;
}

.delay-4 {
  transition-delay: 0.4s;
}

/* =============================================
   SVG DEFS (progress ring gradient)
   ============================================= */

/* =============================================
   DASHBOARD IFRAME EMBED
   ============================================= */
.dashboard-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}

.dashboard-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 10px;
}

.dashboard-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.dashboard-open-btn {
  padding: 7px 16px;
  font-size: 0.8rem;
}

.dashboard-iframe {
  width: 100%;
  height: calc(100vh - 200px);
  min-height: 600px;
  border: none;
  display: block;
  background: var(--bg-secondary);
}

@media (max-width: 768px) {
  .dashboard-iframe {
    height: 900px;
  }
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(245, 244, 237, 0.97);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .navbar {
    position: fixed;
  }

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

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

  .contact-card {
    padding: 36px 24px;
  }

  .interview-tool {
    padding: 24px;
  }

  .tracker-tool {
    padding: 24px;
  }

  .section {
    padding: 70px 0;
  }

  .hero {
    padding: 100px 0 60px;
  }

  .hero-deco-char {
    font-size: clamp(12rem, 55vw, 20rem);
    opacity: 0.035;
  }

  .hero-manifesto {
    margin-bottom: 32px;
  }

  .tracker-stats {
    gap: 10px;
  }

  .t-stat {
    min-width: 60px;
  }
}
/* =============================================
   Judgment — view-list editorial 系统
   ============================================= */

/* ── 观点列表容器 ── */
.view-list {
  margin-top: 8px;
}

/* ── 单条观点 ── */
.view-item {
  padding: 28px 0;
  border-top: 1px solid var(--border-warm);
  cursor: pointer;
  outline: none;
  transition: background var(--transition);
}

.view-item:last-child {
  border-bottom: 1px solid var(--border-warm);
}

/* ── 观点头部（序号 + 核心句 + 标签 + 日期 + 展开）── */
.view-head {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 6px 8px;
  margin: 0 -8px;
  border-radius: 6px;
  transition: background var(--transition);
}

.view-item:hover .view-head {
  background: var(--bg-secondary);
}

.view-num {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent-clay);
  opacity: 0.25;
  line-height: 1;
  flex-shrink: 0;
  width: 2.8rem;
  transition: opacity var(--transition);
}

.view-item:hover .view-num,
.view-item.open .view-num {
  opacity: 0.8;
}

.view-lead {
  flex: 1;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
}

.view-tag {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--accent-clay);
  background: var(--accent-clay-06);
  padding: 2px 8px;
  border-radius: 3px;
  flex-shrink: 0;
  white-space: nowrap;
  opacity: 0.7;
}

.view-item:hover .view-tag,
.view-item.open .view-tag {
  opacity: 1;
}

.view-date {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-shrink: 0;
  white-space: nowrap;
}

.view-toggle {
  font-size: 0.72rem;
  color: var(--text-secondary);
  flex-shrink: 0;
  white-space: nowrap;
  transition: color var(--transition);
  user-select: none;
}

.view-item:hover .view-toggle {
  color: var(--accent-clay);
}

/* ── 观点详情体（折叠/展开）── */
.view-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.view-item.open .view-body {
  max-height: 900px;
}

.view-body-inner {
  padding: 4px 0 20px calc(2.8rem + 16px);
}

.view-body p {
  margin: 14px 0 0 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.75;
  padding-left: calc(2.8rem + 16px);
}

.view-body p:first-child {
  margin-top: 18px;
}

.view-links {
  padding-left: calc(2.8rem + 16px);
  margin-top: 16px;
  padding-bottom: 4px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* 纯文字链接（fallback） */
.view-links a {
  font-size: 0.78rem;
  color: var(--accent-clay);
  text-decoration: none;
  opacity: 0.8;
  transition: opacity var(--transition);
}

.view-links a:hover {
  opacity: 1;
}

/* 按钮式链接：有轮廓，明确可点击 */
.view-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  font-family: var(--font);
  color: var(--accent-clay);
  text-decoration: none;
  background: var(--accent-clay-06);
  border: 1px solid var(--accent-clay-15);
  border-radius: 4px;
  padding: 5px 11px;
  transition: background 0.2s, border-color 0.2s;
}

.view-link-btn:hover {
  background: var(--accent-clay-15);
  border-color: var(--accent-clay-25);
  opacity: 1;
}

/* ── 折叠区块（行业落地 / 能力短板）── */
.view-extra {
  margin-top: 40px;
  border-top: 1px solid var(--border-warm);
}

.view-extra-toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 20px 0;
  background: none;
  border: none;
  outline: none;
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-align: left;
  transition: color var(--transition);
}

.view-extra-toggle:hover {
  color: var(--accent-clay);
}

.view-extra-toggle span {
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0;
  text-transform: none;
}

.view-extra-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.view-extra.open .view-extra-body {
  max-height: 1200px;
}

/* ── 行业落地：两级结构 ── */
.landing-body {
  padding-bottom: 28px;
}

/* 引导句 */
.landing-lead {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0 0 14px 0;
}

.landing-lead strong {
  color: var(--text-primary);
  font-weight: 600;
}

.landing-lead--sec {
  margin-top: 28px;
}

/* 通用场景横排 */
.landing-scenes {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 4px;
  margin-bottom: 4px;
}

.ls-item {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-warm);
  padding: 4px 12px;
  border-radius: 4px;
}

.ls-sep {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 0 2px;
}

/* 行业进度列表 */
.landing-industries {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border-warm);
  margin-top: 4px;
}

.li-row {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
}

.li-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  width: 3rem;
  flex-shrink: 0;
}

.li-stage {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 3px;
  flex-shrink: 0;
  white-space: nowrap;
}

.li-stage--pilot {
  color: var(--accent-yellow);
  background: rgba(217, 119, 6, 0.08);
}

.li-stage--early {
  color: var(--text-muted);
  background: var(--bg-secondary);
}

.li-note {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── 能力短板列表 ── */
.gap2-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 32px;
  border-top: 1px solid var(--border-warm);
}

.gap2-item {
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}

.gap2-title {
  display: block;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.gap2-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0 0 12px 0;
}

.gap2-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.gap2-tags span {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-warm);
  padding: 3px 10px;
  border-radius: 4px;
}

/* ── expand-btn-link（保留，用于其他区块）── */
.expand-btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-family: var(--font);
  color: var(--accent-blue);
  text-decoration: none;
  background: rgba(37, 99, 235, 0.06);
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 4px;
  padding: 4px 10px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.expand-btn-link:hover {
  background: rgba(37, 99, 235, 0.12);
  border-color: rgba(37, 99, 235, 0.35);
}

@media (max-width: 768px) {
  .view-head {
    flex-wrap: wrap;
    gap: 10px;
  }
  .view-num {
    font-size: 1.3rem;
    width: 2rem;
  }
  .view-lead {
    font-size: 0.95rem;
  }
  .view-body p,
  .view-links {
    padding-left: calc(2rem + 12px);
  }
  .view-tag,
  .view-date,
  .view-toggle {
    display: none;
  }
  .landing-scenes {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .ls-sep {
    display: none;
  }
  .li-row {
    flex-wrap: wrap;
    gap: 8px;
  }
}

/* ========== TOOLBOX CARDS ========== */
.toolbox-group {
  margin-bottom: 48px;
}

.toolbox-group-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
}

.toolbox-group-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-blue);
}

.toolbox-group-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.toolbox-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.toolbox-cards--info {
  grid-template-columns: 1fr 1fr 1fr;
}

.toolbox-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.toolbox-card:hover,
.toolbox-card.active {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.toolbox-card-icon {
  font-size: 2rem;
}

.toolbox-card-body h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.toolbox-card-body p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.toolbox-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.toolbox-card-tags span {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--accent-blue-08);
  color: var(--accent-blue);
  border: 1px solid var(--accent-blue-15);
}

.toolbox-card-highlights {
  display: flex;
  gap: 20px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.highlight-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hl-num {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.hl-label {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.toolbox-card-btn {
  margin-top: auto;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-hover);
  background: transparent;
  color: var(--accent-blue);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
  width: fit-content;
}

.toolbox-card-btn:hover {
  background: var(--accent-blue-10);
}

/* 可折叠 section title */
.judgment-section-title.collapsible {
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.judgment-section-title.collapsible:hover {
  color: var(--accent-blue);
}

.section-toggle {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 8px;
}

@media (max-width: 768px) {
  .toolbox-cards {
    grid-template-columns: 1fr;
  }
  .toolbox-cards--info {
    grid-template-columns: 1fr;
  }
}

/* ========== Writing Section ========== */
.writing-section {
  background: var(--bg-primary);
}

.writing-archive {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.writing-post-row {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 18px 16px;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.2s;
  border: 1px solid transparent;
}

.writing-post-row:hover {
  background: var(--bg-secondary);
  border-color: var(--border-warm);
}

.writing-post-date {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.75rem;
  color: var(--accent-clay);
  white-space: nowrap;
  opacity: 0.85;
}

.writing-post-content {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.writing-post-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  transition: color 0.15s;
}

.writing-post-row:hover .writing-post-title {
  color: var(--accent-clay);
}

.writing-post-summary {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.writing-post-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.writing-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 20px;
  background: var(--accent-clay-10);
  color: var(--accent-clay);
  font-weight: 500;
  white-space: nowrap;
}

.writing-archive-link {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s;
}

.writing-archive-link:hover {
  color: var(--accent-blue);
}

@media (max-width: 640px) {
  .writing-post-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .writing-post-tags {
    justify-content: flex-start;
  }
}


/* =============================================
   DARK MODE (data-theme="dark")
   ============================================= */
[data-theme="dark"] {
  --bg-primary: #080c18;
  --bg-secondary: #0d1224;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);

  --accent-blue: #4f8fff;
  --accent-purple: #9b6dff;
  --accent-cyan: #00d4ff;
  --accent-green: #00e5a0;

  --text-primary: #f0f4ff;
  --text-secondary: #8a95b5;
  --text-muted: #4a5270;

  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(79, 143, 255, 0.4);

  --grad-text: linear-gradient(135deg, #4f8fff 0%, #9b6dff 50%, #00d4ff 100%);

  --accent-blue-06: rgba(79, 143, 255, 0.06);
  --accent-blue-08: rgba(79, 143, 255, 0.08);
  --accent-blue-10: rgba(79, 143, 255, 0.10);
  --accent-blue-12: rgba(79, 143, 255, 0.12);
  --accent-blue-15: rgba(79, 143, 255, 0.15);
  --accent-blue-20: rgba(79, 143, 255, 0.20);
  --accent-blue-25: rgba(79, 143, 255, 0.25);
  --accent-blue-30: rgba(79, 143, 255, 0.30);
  --accent-blue-35: rgba(79, 143, 255, 0.35);
  --accent-blue-40: rgba(79, 143, 255, 0.40);
  --accent-blue-50: rgba(79, 143, 255, 0.50);

  --shadow-glow: 0 0 40px rgba(79, 143, 255, 0.15);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .grad-text {
  color: var(--accent-coral);
  font-style: italic;
}

[data-theme="dark"] .glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

[data-theme="dark"] .navbar.scrolled {
  background: rgba(8, 12, 24, 0.9);
  backdrop-filter: blur(20px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .btn-primary {
  background: linear-gradient(135deg, #4f8fff, #9b6dff);
  box-shadow: 0 4px 20px rgba(79, 143, 255, 0.35);
}

[data-theme="dark"] .btn-primary:hover {
  box-shadow: 0 8px 30px rgba(79, 143, 255, 0.5);
  background: linear-gradient(135deg, #4f8fff, #9b6dff);
}

[data-theme="dark"] .about-section {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

/* 深色模式下 tag 背景 */
[data-theme="dark"] .tag {
  background: rgba(255, 255, 255, 0.05);
}

/* 深色模式：移动端 nav 菜单背景修复 */
[data-theme="dark"] .nav-links {
  background: rgba(8, 12, 24, 0.98);
}

/* 深色模式：clay 系颜色调亮，确保深色背景下对比度 */
[data-theme="dark"] .section-label {
  color: var(--accent-coral);
  background: rgba(217, 119, 87, 0.10);
  border-color: rgba(217, 119, 87, 0.35);
}

/* 深色模式：view-list 观点区 */
[data-theme="dark"] .view-item {
  border-top-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .view-item:last-child {
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .view-num {
  color: var(--accent-coral);
}

[data-theme="dark"] .view-tag {
  color: var(--accent-coral);
  background: rgba(217, 119, 87, 0.10);
}

[data-theme="dark"] .view-extra {
  border-top-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .industry-grid2 {
  background: rgba(255, 255, 255, 0.06);
}

/* 深色模式：landing 两级结构 */
[data-theme="dark"] .ls-item {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .landing-industries {
  border-top-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .li-row {
  border-bottom-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .li-stage--pilot {
  background: rgba(217, 119, 6, 0.12);
}

[data-theme="dark"] .li-stage--early {
  background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .gap2-list {
  border-top-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .gap2-item {
  border-bottom-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .gap2-tags span {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .writing-tag {
  background: rgba(217, 119, 87, 0.12);
  color: var(--accent-coral);
}

/* 主题切换按钮 */
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: all var(--transition);
  line-height: 1;
}

.theme-toggle:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}


/* =============================================
   WORKS LIST（工具箱新版：链接列表）
   ============================================= */
.works-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.works-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition);
}

.works-item:hover {
  background: var(--bg-card);
  border-color: var(--border);
  box-shadow: var(--shadow-card);
}

.works-icon {
  font-size: 1.5rem;
  width: 40px;
  text-align: center;
  flex-shrink: 0;
}

.works-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.works-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.works-desc {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.works-arrow {
  font-size: 0.9rem;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: color var(--transition), transform var(--transition);
}

.works-item:hover .works-arrow {
  color: var(--accent-clay);
  transform: translate(2px, -2px);
}

@media (max-width: 640px) {
  .works-item {
    padding: 14px 16px;
    gap: 12px;
  }
}