/* ===================================
   凡人修仙传主题个人网站
   青竹风云期配色方案
   =================================== */

/* ---------- CSS Variables ---------- */
:root {
  /* 主色 */
  --color-green-dark: #1D3A2A;
  --color-green: #2D5A3D;
  --color-green-light: #3A734E;
  --color-green-pale: rgba(45, 90, 61, 0.08);

  /* 紫色点缀（三位女主） */
  --color-purple: #8B6DA0;
  --color-purple-light: #A488B8;
  --color-purple-pale: rgba(139, 109, 160, 0.08);

  /* 银月色 */
  --color-silver: #B8B0A8;
  --color-silver-light: #D0C8C0;

  /* 中性色 */
  --color-cream: #F0EDE5;
  --color-cream-dark: #E8E0D0;
  --color-ink: #1A1A2E;
  --color-ink-light: #3A3A4E;
  --color-text: #2C2C3E;
  --color-text-muted: #6A6A7A;

  /* 字体 */
  --font-display: 'Noto Serif SC', 'Source Han Serif SC', 'STSong', serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'Microsoft YaHei', sans-serif;

  /* 间距 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* 过渡 */
  --transition-fast: 150ms ease-out;
  --transition-normal: 250ms ease-out;
  --transition-slow: 400ms ease-out;

  /* 壁纸遮罩 */
  --wallpaper-rgb: 240, 237, 229;
}

/* ---------- Dark Mode ---------- */
[data-theme="dark"] {
  --color-cream: #0F1410;
  --color-cream-dark: #1A2018;
  --color-ink: #E8E0D0;
  --color-ink-light: #D0C8B8;
  --color-text: #D8D0C0;
  --color-text-muted: #8A8A7A;
  --color-green-pale: rgba(45, 90, 61, 0.15);
  --color-purple-pale: rgba(139, 109, 160, 0.12);
  --wallpaper-rgb: 15, 20, 16;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-cream);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

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

/* ---------- Background Decoration ---------- */
.bg-decoration {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
  overflow: hidden;
}

.bamboo-left {
  position: absolute;
  left: -20px;
  bottom: -100px;
  height: 900px;
  width: 200px;
}

.bamboo-right {
  position: absolute;
  right: -10px;
  bottom: -50px;
  height: 700px;
  width: 150px;
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) var(--space-xl);
  background: linear-gradient(180deg, var(--color-cream) 0%, rgba(240, 237, 229, 0.95) 100%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-cream-dark);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  padding: var(--space-sm) var(--space-xl);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .navbar {
  background: linear-gradient(180deg, var(--color-cream) 0%, rgba(15, 20, 16, 0.95) 100%);
  border-bottom-color: #2A3028;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.brand-symbol {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-green);
  padding: 4px 10px;
  border: 2px solid var(--color-green);
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
  white-space: nowrap;
  letter-spacing: 0.05em;
}

.brand-symbol:hover {
  background: var(--color-green);
  color: var(--color-cream);
}

.brand-symbol-full {
  font-size: 1.1rem;
  padding: 4px 12px;
}

.brand-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-ink);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-xl);
}

.nav-links a {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--color-text-muted);
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-green), var(--color-purple));
  transition: width var(--transition-normal);
}

.nav-links a:hover {
  color: var(--color-ink);
}

.nav-links a:hover::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  transition: all var(--transition-fast);
}

/* ---------- Mobile Menu ---------- */
.mobile-menu {
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: var(--color-cream);
  border-bottom: 1px solid var(--color-cream-dark);
  padding: var(--space-lg);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 999;
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-menu a {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--color-text);
  display: block;
  padding: var(--space-sm) 0;
}

/* ---------- Main Container ---------- */
main {
  position: relative;
  z-index: 1;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  position: relative;
  background: linear-gradient(135deg, var(--color-cream) 0%, rgba(240, 237, 229, 0.8) 50%, rgba(232, 224, 208, 0.6) 100%);
}

[data-theme="dark"] .hero {
  background: linear-gradient(135deg, var(--color-cream) 0%, rgba(15, 20, 16, 0.8) 50%, rgba(26, 32, 24, 0.6) 100%);
}

/* Alchemy Circle Decoration */
.hero-alchemy-circle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  pointer-events: none;
}

.alchemy-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: var(--radius-full);
  border: 1px solid;
  animation: alchemy-spin 30s linear infinite;
}

.alchemy-ring.outer {
  width: 400px;
  height: 400px;
  border-color: var(--color-green-pale);
}

.alchemy-ring.inner {
  width: 280px;
  height: 280px;
  border-color: var(--color-purple-pale);
  animation-direction: reverse;
  animation-duration: 20s;
}

.alchemy-core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle, var(--color-green-pale) 0%, transparent 70%);
  animation: alchemy-pulse 4s ease-in-out infinite;
}

@keyframes alchemy-spin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes alchemy-pulse {
  0%, 100% { opacity: 0.3; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.6; transform: translate(-50%, -50%) scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  margin-bottom: var(--space-xl);
}

.title-main {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--color-green) 0%, var(--color-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.title-sub {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.3em;
}

.hero-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  line-height: 2;
  margin-bottom: var(--space-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
}

.cta-primary,
.cta-secondary {
  font-family: var(--font-display);
  font-size: 1rem;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.cta-primary {
  background: linear-gradient(135deg, var(--color-green) 0%, var(--color-green-light) 100%);
  color: var(--color-cream);
  box-shadow: 0 4px 15px rgba(45, 90, 61, 0.3);
}

.cta-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(45, 90, 61, 0.4);
}

.cta-secondary {
  background: transparent;
  color: var(--color-green);
  border: 1px solid var(--color-green);
}

.cta-secondary:hover {
  background: var(--color-green-pale);
  transform: translateY(-2px);
}

/* Scroll Indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  animation: scroll-bounce 2s ease-in-out infinite;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--color-green);
  border-bottom: 2px solid var(--color-green);
  transform: rotate(45deg);
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* ---------- Section Common ---------- */
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-ink);
  text-align: center;
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

.title-icon {
  font-size: 1.5rem;
  color: var(--color-green);
  opacity: 0.6;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin-bottom: var(--space-2xl);
}

/* ---------- About Section ---------- */
.about-section {
  padding: var(--space-3xl) 0;
  background: var(--color-cream-dark);
  position: relative;
}

[data-theme="dark"] .about-section {
  background: #141810;
}

.about-content {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.about-portrait {
  position: sticky;
  top: 100px;
}

.portrait-frame {
  width: 280px;
  height: 350px;
  border: 2px solid var(--color-green);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  background: var(--color-cream);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
  transition: all var(--transition-normal);
  position: relative;
}

.portrait-frame:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 50px rgba(45, 90, 61, 0.1);
}

.portrait-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-green-pale) 0%, var(--color-purple-pale) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  overflow: visible;
}

.portrait-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
  transform: rotate(-90deg);
  object-position: center;
  z-index: 1;
  position: relative;
}

.portrait-upload {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(45, 90, 61, 0.85);
  color: #F0EDE5;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: 10;
  font-family: var(--font-body);
}

.portrait-frame:hover .portrait-upload {
  opacity: 1;
}

.portrait-upload:hover {
  background: var(--color-green);
}

.portrait-symbol {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 700;
  color: var(--color-green);
  opacity: 0.3;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.about-intro {
  font-size: 1.15rem;
  line-height: 2;
  color: var(--color-text);
}

.about-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-green-pale);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-green);
}

.detail-item {
  display: flex;
  gap: var(--space-md);
}

.detail-label {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-green);
  min-width: 100px;
}

.detail-value {
  color: var(--color-text);
}

.about-motto {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--color-purple);
  padding-left: var(--space-lg);
  border-left: 2px solid var(--color-purple);
}

/* ---------- Projects Section ---------- */
.projects-section {
  padding: var(--space-3xl) 0;
  background: var(--color-cream);
}

[data-theme="dark"] .projects-section {
  background: #0C1008;
}

/* ---------- Skills Section ---------- */
.skills-section {
  padding: var(--space-3xl) 0;
  background: var(--color-cream-dark);
}

[data-theme="dark"] .skills-section {
  background: #141810;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.skill-group {
  background: var(--color-cream);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
  border: 1px solid transparent;
}

.skill-group:hover {
  border-color: var(--color-green-pale);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.skill-group-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.skill-icon {
  font-size: 1.3rem;
}

.skill-bars {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.skill-bar {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  position: relative;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.skill-name {
  font-weight: 500;
  color: var(--color-text);
  font-size: 0.95rem;
}

.skill-level {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.skill-track {
  height: 8px;
  background: var(--color-cream-dark);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
}

.skill-fill.high {
  width: 85%;
  background: linear-gradient(90deg, var(--color-green), var(--color-green-light));
}

.skill-fill.medium {
  width: 70%;
  background: linear-gradient(90deg, var(--color-purple), var(--color-purple-light));
}

.skill-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.cert-badge {
  display: inline-flex;
  padding: var(--space-sm) var(--space-md);
  background: linear-gradient(135deg, var(--color-green-pale), var(--color-purple-pale));
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-green);
}

.cert-name {
  font-size: 0.95rem;
  color: var(--color-text);
  font-weight: 500;
}

.course-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.course-tag {
  font-size: 0.85rem;
  padding: 6px 14px;
  background: var(--color-green-pale);
  color: var(--color-green-dark);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-green);
  opacity: 0.85;
  transition: all var(--transition-fast);
}

.course-tag:hover {
  opacity: 1;
  background: var(--color-green);
  color: var(--color-cream);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.project-card {
  background: var(--color-cream-dark);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
  border-color: var(--color-green-pale);
}

.card-accent {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.card-accent.green {
  background: linear-gradient(90deg, var(--color-green), var(--color-green-light));
}

.card-accent.purple {
  background: linear-gradient(90deg, var(--color-purple), var(--color-purple-light));
}

.card-accent.silver {
  background: linear-gradient(90deg, var(--color-silver), var(--color-silver-light));
}

.card-header {
  margin-bottom: var(--space-md);
}

.card-category {
  font-size: 0.8rem;
  color: var(--color-green);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--color-ink);
}

.card-description {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.tag {
  font-size: 0.8rem;
  padding: 2px 10px;
  background: var(--color-green-pale);
  color: var(--color-green);
  border-radius: var(--radius-full);
  font-weight: 500;
}

.card-actions {
  display: flex;
  gap: var(--space-md);
}

.card-link {
  font-size: 0.9rem;
  color: var(--color-green);
  transition: color var(--transition-fast);
}

.card-link:hover {
  color: var(--color-green-light);
}

.card-details {
  margin-bottom: var(--space-md);
  padding: var(--space-md);
  background: var(--color-green-pale);
  border-radius: var(--radius-md);
}

.card-metric {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  padding: 2px 0;
}

.card-metric:first-child {
  font-weight: 500;
  color: var(--color-text);
}

/* ---------- Contact Section ---------- */
.contact-section {
  padding: var(--space-3xl) 0;
  background: var(--color-cream-dark);
}

[data-theme="dark"] .contact-section {
  background: #141810;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact-text {
  font-size: 1.05rem;
  line-height: 2;
  color: var(--color-text);
  margin-bottom: var(--space-xl);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-cream);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.contact-method:hover {
  transform: translateX(5px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.method-icon {
  font-size: 1.5rem;
}

.method-label {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-ink);
  min-width: 70px;
}

.method-value {
  color: var(--color-text-muted);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group label {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-ink);
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: var(--space-md);
  background: var(--color-cream);
  border: 1px solid var(--color-cream-dark);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-green);
  box-shadow: 0 0 0 3px var(--color-green-pale);
}

.submit-btn {
  font-family: var(--font-display);
  font-size: 1rem;
  padding: var(--space-md) var(--space-xl);
  background: linear-gradient(135deg, var(--color-green) 0%, var(--color-purple) 100%);
  color: var(--color-cream);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 15px rgba(45, 90, 61, 0.3);
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(45, 90, 61, 0.4);
}

/* ---------- Footer ---------- */
.footer {
  padding: var(--space-2xl) 0;
  text-align: center;
  background: var(--color-ink);
  color: var(--color-cream-dark);
  position: relative;
}

.footer-bamboo {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-green), var(--color-purple), var(--color-green), transparent);
}

.footer-text {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

.footer-symbol {
  opacity: 0.5;
}

.footer-subtext {
  font-size: 0.9rem;
  opacity: 0.7;
  margin-bottom: var(--space-sm);
}

.footer-copy {
  font-size: 0.8rem;
  opacity: 0.5;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

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

  .about-portrait {
    position: static;
    display: flex;
    justify-content: center;
  }

  .portrait-frame {
    width: 220px;
    height: 280px;
  }

  .contact-content {
    grid-template-columns: 1fr;
  }

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

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

  .hero-alchemy-circle {
    width: 300px;
    height: 300px;
  }

  .alchemy-ring.outer {
    width: 250px;
    height: 250px;
  }

  .alchemy-ring.inner {
    width: 170px;
    height: 170px;
  }
}

@media (max-width: 480px) {
  :root {
    --space-xl: 20px;
    --space-2xl: 32px;
    --space-3xl: 48px;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .card-actions {
    flex-direction: column;
    gap: var(--space-sm);
  }
}

/* ---------- Edit Modal ---------- */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--color-cream);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 560px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--color-cream-dark);
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-ink);
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.modal-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.modal-form label {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-ink);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.modal-form input,
.modal-form textarea,
.modal-form select {
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-cream-dark);
  border: 1px solid var(--color-cream-dark);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.modal-form input:focus,
.modal-form textarea:focus,
.modal-form select:focus {
  outline: none;
  border-color: var(--color-green);
  box-shadow: 0 0 0 3px var(--color-green-pale);
}

.modal-form textarea {
  resize: vertical;
  min-height: 80px;
}

.modal-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-end;
  margin-top: var(--space-md);
}

.modal-btn {
  font-family: var(--font-display);
  font-size: 0.95rem;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-btn.primary {
  background: linear-gradient(135deg, var(--color-green), var(--color-green-light));
  color: var(--color-cream);
}

.modal-btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(45, 90, 61, 0.3);
}

.modal-btn.secondary {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-cream-dark);
}

.modal-btn.secondary:hover {
  color: var(--color-ink);
}

.modal-btn.danger {
  background: transparent;
  color: #c0392b;
  border: 1px solid #c0392b;
}

.modal-btn.danger:hover {
  background: #c0392b;
  color: var(--color-cream);
}

/* ---------- Edit controls on cards ---------- */
.editable-wrapper {
  position: relative;
}

.edit-toolbar {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  display: flex;
  gap: var(--space-xs);
  z-index: 10;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.editable-wrapper:hover .edit-toolbar {
  opacity: 1;
}

.edit-btn,
.delete-btn {
  background: var(--color-cream);
  border: 1px solid var(--color-cream-dark);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.edit-btn:hover,
.delete-btn:hover {
  color: var(--color-green);
  border-color: var(--color-green);
  background: var(--color-green-pale);
}

.delete-btn:hover {
  color: #c0392b;
  border-color: #c0392b;
  background: rgba(192, 57, 43, 0.08);
}

/* Add button */
.add-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-display);
  font-size: 0.9rem;
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  color: var(--color-green);
  border: 1px dashed var(--color-green);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-top: var(--space-lg);
}

.add-btn:hover {
  background: var(--color-green-pale);
  border-style: solid;
}

/* Badge-style tag for cert/course */
.badge-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.badge-remove {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.badge-item:hover .badge-remove {
  opacity: 1;
}

.badge-remove:hover {
  color: #c0392b;
}

/* ---------- Wallpaper Reveal (Mimo-style hover photo) ---------- */
.wallpaper-reveal-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
  opacity: 0;
  --reveal-x: 50vw;
  --reveal-y: 50vh;
  --reveal-size: clamp(190px, 24vw, 410px);
  -webkit-mask-image: radial-gradient(
    circle var(--reveal-size) at var(--reveal-x) var(--reveal-y),
    #000 0%,
    #000 56%,
    rgba(0, 0, 0, 0.82) 68%,
    rgba(0, 0, 0, 0.28) 84%,
    transparent 100%
  );
  mask-image: radial-gradient(
    circle var(--reveal-size) at var(--reveal-x) var(--reveal-y),
    #000 0%,
    #000 56%,
    rgba(0, 0, 0, 0.82) 68%,
    rgba(0, 0, 0, 0.28) 84%,
    transparent 100%
  );
  transition: opacity 220ms ease-out;
  will-change: opacity, mask-image, -webkit-mask-image;
}

.wallpaper-reveal-layer.is-active {
  opacity: 1;
}

/* 文字和控件优先：光标经过这些内容时，底层照片退场，避免影响阅读。 */
.wallpaper-reveal-layer.is-text-protected {
  opacity: 0;
  transition-duration: 100ms;
}

.wallpaper-panel {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  transform: scale(1.025);
  transition: opacity 360ms ease, transform 900ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

.wallpaper-left {
  opacity: 1;
}

.wallpaper-reveal-layer.is-right .wallpaper-left {
  opacity: 0;
}

.wallpaper-reveal-layer.is-right .wallpaper-right {
  opacity: 1;
}

.wallpaper-reveal-layer.is-active .wallpaper-panel {
  transform: scale(1);
}

.wallpaper-img {
  position: absolute;
  top: 50%;
  left: 50%;
  /* 图片文件本身为竖图：先交换视口宽高，再左旋 90°，旋转后正好铺满屏幕。 */
  width: 100vh;
  height: 100vw;
  max-width: none;
  object-fit: cover;
  object-position: center;
  transform: translate(-50%, -50%) rotate(-90deg) scale(1.01);
  filter: saturate(0.96) contrast(0.98);
}

.wallpaper-right .wallpaper-img {
  object-position: 50% 48%;
}

/* 区块背景在照片下方，正文与交互控件始终位于照片上方。 */
.container,
.hero-content,
.hero-scroll-indicator,
.footer > * {
  position: relative;
  z-index: 2;
}

@media (prefers-reduced-motion: reduce) {
  .wallpaper-reveal-layer,
  .wallpaper-panel {
    transition: none;
  }
}

/* ---------- Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================================================== */
/* V2 · 长期维护型身份玉简                                                   */
/* ========================================================================== */

:root {
  --color-jade-dark: #1F4932;
  --color-jade: #2F6B49;
  --color-gold: #A48242;
  --color-paper: #F3EFE4;
  --color-paper-deep: #E7DECA;
  --color-danger: #A8473D;
  --shadow-paper: 0 12px 32px rgba(50, 43, 31, 0.08);
}

body {
  background-color: var(--color-paper);
  background-image:
    radial-gradient(circle at 15% 20%, rgba(47, 107, 73, 0.035) 0 1px, transparent 1.5px),
    radial-gradient(circle at 82% 64%, rgba(164, 130, 66, 0.035) 0 1px, transparent 1.5px);
  background-size: 22px 22px, 29px 29px;
}

a:visited {
  color: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[contenteditable="true"]:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

.navbar {
  min-height: 68px;
  padding: 10px clamp(18px, 4vw, 52px);
  background: rgba(243, 239, 228, 0.93);
  border-bottom: 1px solid rgba(47, 107, 73, 0.16);
}

.nav-links {
  gap: clamp(16px, 2vw, 30px);
}

.nav-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-links a.active {
  color: var(--color-jade-dark);
}

.container {
  max-width: 1180px;
}

.about-section,
.skills-section,
.contact-section {
  background-color: rgba(231, 222, 202, 0.92);
  background-image: linear-gradient(90deg, rgba(47, 107, 73, 0.025), transparent 28%, transparent 72%, rgba(47, 107, 73, 0.025));
}

.projects-section,
.journey-section {
  background-color: rgba(243, 239, 228, 0.94);
}

.about-section,
.projects-section,
.skills-section,
.journey-section,
.contact-section {
  padding: clamp(72px, 8vw, 112px) 0;
}

.section-title {
  justify-content: flex-start;
  text-align: left;
  gap: 12px;
  margin-bottom: 10px;
  padding-bottom: 15px;
  position: relative;
  text-wrap: balance;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(190px, 38vw);
  height: 1px;
  background: linear-gradient(90deg, var(--color-jade), rgba(164, 130, 66, 0.65), transparent);
}

.section-title-main {
  line-height: 1.2;
}

.title-icon {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border: 1px solid rgba(47, 107, 73, 0.42);
  color: var(--color-jade-dark);
  font-size: 0.92rem;
  opacity: 0.9;
  border-radius: 2px;
}

.title-icon > *,
.title-icon {
  font-family: var(--font-display);
}

.section-subtitle {
  text-align: left;
  max-width: 680px;
  margin-bottom: clamp(34px, 5vw, 56px);
}

.hero {
  background:
    linear-gradient(180deg, rgba(243, 239, 228, 0.97), rgba(243, 239, 228, 0.83)),
    radial-gradient(circle at 50% 42%, rgba(47, 107, 73, 0.08), transparent 42%);
}

.hero-title .title-main {
  text-shadow: 0 10px 28px rgba(26, 26, 46, 0.08);
}

.hero-content {
  width: min(760px, 100%);
  min-width: 0;
}

.hero-description {
  text-wrap: pretty;
}

.cultivation-status {
  width: min(680px, calc(100vw - 40px));
  margin: 26px auto 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 18px;
  padding: 15px 22px;
  border-top: 1px solid rgba(47, 107, 73, 0.28);
  border-bottom: 1px solid rgba(47, 107, 73, 0.28);
  background: rgba(243, 239, 228, 0.68);
  backdrop-filter: blur(8px);
}

.status-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.status-item:first-child {
  text-align: right;
}

.status-item:last-child {
  text-align: left;
}

.status-label {
  color: var(--color-text-muted);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
}

.status-item strong {
  color: var(--color-jade-dark);
  font-family: var(--font-display);
  font-weight: 600;
}

.status-seal,
.editor-seal {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: var(--color-paper);
  background: var(--color-jade-dark);
  border: 1px solid var(--color-gold);
  font-family: var(--font-display);
  border-radius: 2px;
}

.status-seal {
  line-height: 1;
}

.portrait-frame {
  width: 280px;
  height: 350px;
  padding: 10px;
  border-radius: 3px;
  border: 1px solid var(--color-jade-dark);
  box-shadow: var(--shadow-paper);
  overflow: hidden;
}

.portrait-frame::before,
.portrait-frame::after {
  content: '';
  position: absolute;
  width: 28px;
  height: 28px;
  border-color: var(--color-gold);
  z-index: 4;
  pointer-events: none;
}

.portrait-frame::before {
  top: 5px;
  left: 5px;
  border-top: 2px solid;
  border-left: 2px solid;
}

.portrait-frame::after {
  right: 5px;
  bottom: 5px;
  border-right: 2px solid;
  border-bottom: 2px solid;
}

.portrait-photo,
.portrait-placeholder {
  width: 100%;
  height: 100%;
  border-radius: 0;
}

.portrait-photo {
  object-fit: cover;
  object-position: center;
  transform: none !important;
  position: relative;
  z-index: 1;
}

.portrait-placeholder {
  overflow: hidden;
}

.portrait-caption {
  margin-top: 12px;
  text-align: center;
  color: var(--color-text-muted);
  font-family: var(--font-display);
  font-size: 0.9rem;
}

.portrait-actions {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  z-index: 12;
  gap: 8px;
  justify-content: center;
}

.portrait-upload,
.portrait-adjust {
  position: static;
  opacity: 1;
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 11px;
  border: 1px solid rgba(243, 239, 228, 0.7);
  border-radius: 3px;
  background: rgba(31, 73, 50, 0.92);
  color: var(--color-paper);
  font-family: var(--font-body);
  font-size: 0.78rem;
  cursor: pointer;
}

.portrait-adjust {
  border-color: rgba(243, 239, 228, 0.7);
}

.about-details {
  border-left: 2px solid var(--color-jade);
  border-radius: 2px;
  background: rgba(47, 107, 73, 0.055);
}

.about-motto {
  color: #735D83;
}

.projects-grid,
.skills-grid {
  gap: 26px;
}

.project-card,
.skill-group {
  border-radius: 4px;
  border: 1px solid rgba(47, 107, 73, 0.12);
  box-shadow: none;
}

.project-card:hover,
.skill-group:hover {
  box-shadow: var(--shadow-paper);
}

.skill-group {
  padding: clamp(22px, 3vw, 32px);
}

.skill-group-title {
  gap: 12px;
  margin-bottom: 26px;
}

.skill-icon,
.method-icon {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid rgba(47, 107, 73, 0.46);
  color: var(--color-jade-dark);
  background: rgba(243, 239, 228, 0.72);
  font-family: var(--font-display);
  font-size: 0.9rem;
  border-radius: 2px;
}

.skill-info {
  display: grid;
  grid-template-columns: minmax(120px, 0.7fr) minmax(0, 1.3fr);
  align-items: start;
  gap: 16px;
}

.skill-name {
  min-width: 0;
  overflow-wrap: anywhere;
}

.skill-level {
  padding-right: 0;
  text-align: right;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.skill-bar > .delete-btn {
  display: none !important;
}

.skill-item-actions {
  margin-top: 8px;
  justify-content: flex-end;
  gap: 6px;
}

.skill-item-actions.compact {
  margin-top: 0;
  margin-left: auto;
}

.skill-item-actions button {
  min-width: 52px;
  min-height: 34px;
  padding: 5px 10px;
  border: 1px solid rgba(47, 107, 73, 0.28);
  border-radius: 3px;
  background: var(--color-paper);
  color: var(--color-jade-dark);
  cursor: pointer;
}

.skill-item-actions button.danger {
  color: var(--color-danger);
  border-color: rgba(168, 71, 61, 0.35);
}

.cert-badge {
  border-left: 0;
  border-radius: 3px;
  border: 1px solid rgba(47, 107, 73, 0.18);
  background: rgba(47, 107, 73, 0.055);
  justify-content: space-between;
}

.course-tag {
  border-radius: 3px;
  opacity: 1;
}

.edit-hint,
.section-add-action {
  justify-content: center;
  margin-top: 20px;
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

.journey-timeline {
  position: relative;
  display: grid;
  gap: 0;
  padding-left: 86px;
}

.journey-timeline::before {
  content: '';
  position: absolute;
  top: 22px;
  bottom: 22px;
  left: 34px;
  width: 1px;
  background: linear-gradient(var(--color-jade), rgba(164, 130, 66, 0.7));
}

.journey-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding: 0 0 34px 0;
}

.journey-item:last-child {
  padding-bottom: 0;
}

.journey-marker {
  position: absolute;
  left: -68px;
  top: 4px;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--color-paper);
  background: var(--color-jade-dark);
  border: 1px solid var(--color-gold);
  font-family: var(--font-display);
  border-radius: 2px;
}

.journey-content {
  padding: 22px 26px;
  border-top: 1px solid rgba(47, 107, 73, 0.25);
  background: rgba(231, 222, 202, 0.42);
}

.journey-time {
  color: var(--color-gold);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.journey-title {
  margin: 7px 0 6px;
  font-family: var(--font-display);
  color: var(--color-ink);
  font-size: 1.25rem;
}

.journey-description {
  color: var(--color-text-muted);
  line-height: 1.8;
}

.contact-method {
  border-radius: 3px;
  border: 1px solid rgba(47, 107, 73, 0.13);
}

.contact-method:hover {
  box-shadow: none;
  border-color: rgba(47, 107, 73, 0.42);
}

.method-icon {
  font-size: 0.82rem;
}

.submit-btn {
  border-radius: 3px;
  background: var(--color-jade-dark);
  box-shadow: 0 8px 18px rgba(31, 73, 50, 0.18);
}

.submit-btn:hover {
  background: var(--color-jade);
}

.form-group input,
.form-group textarea,
.modal-form input,
.modal-form textarea,
.modal-form select {
  border-radius: 3px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.modal {
  border-radius: 4px;
  border-color: rgba(47, 107, 73, 0.22);
}

.modal-btn {
  min-height: 44px;
  border-radius: 3px;
}

.modal-close {
  width: 44px;
  height: 44px;
}

.edit-only {
  display: none !important;
}

body.edit-mode .edit-toolbar,
body.edit-mode .portrait-actions,
body.edit-mode .skill-item-actions,
body.edit-mode .section-add-action {
  display: flex !important;
}

body.edit-mode .edit-hint {
  display: block !important;
  text-align: center;
}

body.edit-mode .edit-toolbar {
  opacity: 1;
}

body.edit-mode .editable-wrapper {
  outline: 1px dashed rgba(47, 107, 73, 0.28);
  outline-offset: 5px;
}

.site-editable {
  border-radius: 2px;
}

body.edit-mode .site-editable {
  cursor: text;
  outline: 1px dashed rgba(164, 130, 66, 0.72);
  outline-offset: 4px;
  background: rgba(255, 250, 232, 0.28);
}

body.edit-mode .site-editable:hover {
  background: rgba(255, 250, 232, 0.58);
}

.editor-dock {
  position: fixed;
  right: 22px;
  top: 86px;
  bottom: auto;
  z-index: 1800;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

/* 默认隐藏管理入口，避免脚本加载前在公开页面短暂闪现。 */
.editor-dock[hidden] {
  display: none;
}

.editor-toggle {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  gap: 13px;
  padding: 8px 18px 8px 12px;
  border: 1px solid rgba(164, 130, 66, 0.62);
  border-radius: 3px;
  color: var(--color-paper);
  background: var(--color-jade-dark);
  box-shadow: 0 10px 28px rgba(31, 73, 50, 0.2);
  cursor: pointer;
  font-family: var(--font-display);
}

.editor-seal {
  width: 28px;
  height: 28px;
  font-size: 0.78rem;
  background: transparent;
}

.editor-panel {
  width: min(350px, calc(100vw - 32px));
  padding: 20px;
  border: 1px solid rgba(164, 130, 66, 0.5);
  border-radius: 4px;
  background: rgba(243, 239, 228, 0.98);
  box-shadow: 0 18px 50px rgba(31, 36, 28, 0.22);
  color: var(--color-text);
}

.editor-panel-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-ink);
}

.editor-panel-help,
.editor-save-status {
  margin-top: 8px;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.editor-panel-actions {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.editor-panel-actions button,
.editor-import {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 10px;
  border: 1px solid rgba(47, 107, 73, 0.26);
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.42);
  color: var(--color-jade-dark);
  font: inherit;
  cursor: pointer;
}

.editor-panel-actions .editor-danger {
  color: var(--color-danger);
  border-color: rgba(168, 71, 61, 0.35);
}

.editor-panel-actions .editor-done {
  color: var(--color-paper);
  background: var(--color-jade-dark);
}

.site-toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 2300;
  max-width: min(520px, calc(100vw - 32px));
  padding: 11px 18px;
  border: 1px solid rgba(164, 130, 66, 0.55);
  border-radius: 3px;
  background: rgba(31, 73, 50, 0.96);
  color: var(--color-paper);
  opacity: 0;
  transform: translate(-50%, 18px);
  pointer-events: none;
  transition: opacity 180ms ease-out, transform 180ms ease-out;
}

.site-toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.portrait-editor-modal {
  max-width: 680px;
}

.portrait-editor-help {
  margin: -8px 0 14px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.portrait-crop-stage {
  position: relative;
  width: min(340px, 78vw);
  aspect-ratio: 4 / 5;
  margin: 0 auto;
  border: 1px solid var(--color-jade-dark);
  background: var(--color-paper-deep);
  overflow: hidden;
  touch-action: none;
}

#portraitCropCanvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
  touch-action: none;
}

#portraitCropCanvas:active {
  cursor: grabbing;
}

.crop-corner {
  position: absolute;
  width: 24px;
  height: 24px;
  pointer-events: none;
  border-color: var(--color-gold);
}

.crop-corner.top-left { top: 8px; left: 8px; border-top: 2px solid; border-left: 2px solid; }
.crop-corner.top-right { top: 8px; right: 8px; border-top: 2px solid; border-right: 2px solid; }
.crop-corner.bottom-left { bottom: 8px; left: 8px; border-bottom: 2px solid; border-left: 2px solid; }
.crop-corner.bottom-right { bottom: 8px; right: 8px; border-bottom: 2px solid; border-right: 2px solid; }

.portrait-editor-controls {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.portrait-editor-controls label {
  display: grid;
  grid-template-columns: 60px 1fr;
  align-items: center;
  gap: 12px;
  color: var(--color-text);
}

.portrait-rotate-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.portrait-rotate-actions button {
  min-height: 40px;
  padding: 7px 12px;
  border: 1px solid rgba(47, 107, 73, 0.28);
  border-radius: 3px;
  background: transparent;
  color: var(--color-jade-dark);
  cursor: pointer;
}

/* 壁纸采用上下分区：光标位于上半屏显示第一张，下半屏显示第二张。 */
.wallpaper-top {
  opacity: 1;
}

.wallpaper-reveal-layer.is-bottom .wallpaper-top {
  opacity: 0;
}

.wallpaper-reveal-layer.is-bottom .wallpaper-bottom {
  opacity: 1;
}

.wallpaper-reveal-layer {
  --reveal-size: clamp(170px, 21vw, 360px);
}

.wallpaper-img {
  filter: saturate(0.9) contrast(0.95) brightness(0.96);
}

.wallpaper-bottom .wallpaper-img {
  object-position: 50% 48%;
}

[data-theme="dark"] body,
[data-theme="dark"] .projects-section,
[data-theme="dark"] .journey-section {
  background-color: #0F1410;
}

[data-theme="dark"] .navbar,
[data-theme="dark"] .editor-panel,
[data-theme="dark"] .modal {
  background: rgba(20, 24, 16, 0.97);
}

[data-theme="dark"] .about-section,
[data-theme="dark"] .skills-section,
[data-theme="dark"] .contact-section {
  background-color: #141810;
}

[data-theme="dark"] .cultivation-status,
[data-theme="dark"] .journey-content {
  background: rgba(20, 24, 16, 0.76);
}

@media (max-width: 900px) {
  .nav-links {
    gap: 14px;
  }

  .nav-links a {
    font-size: 0.86rem;
  }

  .cultivation-status {
    width: min(620px, calc(100vw - 44px));
  }
}

@media (max-width: 768px) {
  .navbar {
    min-height: 64px;
    padding: 8px 18px;
  }

  .brand-text {
    font-size: 1rem;
  }

  .mobile-menu-btn {
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
  }

  .hero {
    min-height: 100svh;
    padding: 110px 20px 80px;
  }

  .hero-title .title-main {
    font-size: clamp(2.7rem, 14vw, 4.5rem);
  }

  .title-sub {
    max-width: 100%;
    font-size: clamp(0.9rem, 4vw, 1.1rem);
    letter-spacing: 0.16em;
    line-height: 1.8;
    overflow-wrap: anywhere;
  }

  .cultivation-status {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 14px 16px;
  }

  .status-item:first-child,
  .status-item:last-child {
    text-align: center;
  }

  .status-seal {
    margin: 0 auto;
    width: 30px;
    height: 30px;
    font-size: 0.8rem;
  }

  .section-title {
    font-size: clamp(1.65rem, 8vw, 2.2rem);
  }

  .section-title::after {
    width: 130px;
  }

  .about-content {
    gap: 34px;
  }

  .about-intro {
    font-size: 1rem;
    line-height: 1.85;
  }

  .detail-item {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .skill-info {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .skill-level {
    text-align: left;
    font-size: 0.82rem;
  }

  .skill-name {
    font-size: 1rem;
  }

  .skill-item-actions {
    justify-content: flex-start;
  }

  .journey-timeline {
    padding-left: 62px;
  }

  .journey-timeline::before {
    left: 23px;
  }

  .journey-marker {
    left: -55px;
    width: 32px;
    height: 32px;
  }

  .journey-content {
    padding: 18px;
  }

  .contact-text br {
    display: none;
  }

  .contact-method {
    display: grid;
    grid-template-columns: 34px 58px minmax(0, 1fr);
    gap: 12px;
  }

  .method-value {
    min-width: 0;
    overflow-wrap: anywhere;
  }

  .editor-dock {
    right: 14px;
    top: auto;
    bottom: 14px;
  }

  .editor-toggle {
    width: 48px;
    min-width: 48px;
    padding: 8px;
    justify-content: center;
  }

  #editModeLabel {
    display: none;
  }

  body.edit-mode #editModeLabel {
    display: inline;
  }

  body.edit-mode .editor-toggle {
    width: auto;
    padding-right: 14px;
  }

  .bamboo-left {
    left: -62px;
    opacity: 0.56;
  }

  .bamboo-right {
    right: -54px;
    opacity: 0.48;
  }

  .editor-panel-actions {
    grid-template-columns: 1fr;
  }

  .wallpaper-reveal-layer {
    display: none;
  }

  .fade-in {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 480px) {
  .brand-symbol-full {
    font-size: 0.92rem;
    padding: 4px 8px;
  }

  .hero-cta {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .cta-primary,
  .cta-secondary {
    min-height: 46px;
    padding: 11px 22px;
  }

  .portrait-frame {
    width: min(260px, 78vw);
    height: auto;
    aspect-ratio: 4 / 5;
  }

  .project-card,
  .skill-group {
    padding: 20px;
  }

  .course-tag {
    width: 100%;
    justify-content: space-between;
  }

  .contact-method {
    padding: 13px;
  }

  .footer-text {
    padding: 0 18px;
    flex-wrap: wrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}