/* Yoyo Creative Path - Static Site Styles */
       /*wt add 弹出层样式*/
        #popup{
            position: fixed;
            left: 0px;
            top: 0px;
            width: 100%;
            height: 100%;
            text-align: center;
            display: none;         
        }
        #popup .bg{
            background-color: rgba(0,0,0,0.5);
            width: 100%;
            height: 100%;
        }
        @media \0screen\,screen\9 {
            #popup .bg{
                background-color:#000000;
                filter:Alpha(opacity=50);
                position:static;
            }
            #popup .bg img{
                position: relative;               
            }
        }
        #popup img{
            max-width: 100%;
            max-height: 100%;
            /*以下三行实现垂直居中*/
            margin: auto;  
  			position: absolute;  
 			top: 0; left: 0; bottom: 0; right: 0; 
 			/*以上三行实现垂直居中*/
        }

:root {
  --color-hero-bg: #ddeeed;
  --color-bg: #f5f5f0;
  --color-bg-secondary: #e8e8df;
  --color-contact-bg: #eeddcc;
  --color-text: #1a1a1a;
  --color-text-muted: #4d4d44;
  --color-accent: #cc5544;
  --color-accent-hover: #b84a3b;
  --color-white: #ffffff;

  --font-serif: "Songti SC", "STSong", "Noto Serif TC", "Yu Mincho", serif;
  --font-sans: "PingFang TC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans TC", sans-serif;

  --header-height: 72px;
  --max-width: 1200px;
  --radius-sm: 12px;
  --radius-md: 24px;
  --radius-lg: 40px;
  --radius-pill: 9999px;

  --shadow-card: 0 4px 24px rgba(26, 26, 26, 0.06);
  --transition: 0.25s ease;
  --reveal-duration: 0.8s;
  --reveal-easing: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.25;
}

.container {
  width: min(100% - 48px, var(--max-width));
  margin-inline: auto;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 1000;
  padding: 8px 16px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: 16px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--color-bg);
  border-bottom: 1px solid rgba(26, 26, 26, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  height: 36px;
  width: auto;
}

.site-nav ul {
  display: flex;
  gap: 32px;
}

.site-nav a {
  font-size: 15px;
  letter-spacing: 0.02em;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition);
}

.site-nav a:hover,
.site-nav a.active {
  border-bottom-color: var(--color-text);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 32px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-text);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-white);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}

.btn-outline:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

/* Hero */
.hero {
  background: var(--color-hero-bg);
  padding: 100px 0 120px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}

.hero p {
  max-width: 640px;
  margin: 0 auto 40px;
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--color-text-muted);
}

/* Sections */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--color-bg-secondary);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 8px;
}

.section-subtitle {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  margin-bottom: 48px;
}

/* Portfolio */
.portfolio-section {
  background: var(--color-bg);
}

.portfolio-card {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-card);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px 32px;
}

.portfolio-item {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.portfolio-item img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.portfolio-item-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.portfolio-item-number {
  font-family: var(--font-serif);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.portfolio-item-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
}

.portfolio-item-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-content h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 24px;
}

.about-content p {
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

.about-image img {
  width: 100%;
  max-height: 600px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* Contact */
.contact-section {
  background: var(--color-contact-bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.contact-info h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 40px;
}

.contact-block {
  margin-bottom: 32px;
}

.contact-block h5 {
  font-family: var(--font-serif);
  font-size: 1rem;
  margin-bottom: 8px;
}

.contact-block p,
.contact-block a {
  color: var(--color-text-muted);
}

.contact-block a:hover {
  color: var(--color-accent);
}

.contact-form {
  display: grid;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.875rem;
}

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  font-family: var(--font-sans);
  font-size: 1rem;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.form-message {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  display: none;
}

.form-message.visible {
  display: block;
}

.form-message.success {
  background: rgba(170, 187, 153, 0.3);
  color: var(--color-text);
}

.form-message.error {
  background: rgba(204, 85, 68, 0.15);
  color: var(--color-accent);
}

/* Stats */
.stats-section {
  text-align: center;
}

.stats-section .section-title {
  margin-bottom: 12px;
}

.stats-intro {
  color: var(--color-text-muted);
  margin-bottom: 56px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.stat-item h3 {
  font-size: clamp(3rem, 6vw, 4.5rem);
  margin-bottom: 8px;
}

.stat-item p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  padding: 48px 0;
  text-align: center;
  background: var(--color-bg);
  border-top: 1px solid rgba(26, 26, 26, 0.06);
}

.site-footer h6 {
  font-family: var(--font-serif);
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  color: var(--color-text-muted);
}

.site-footer p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Scroll reveal */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(28px);
    transition:
      opacity var(--reveal-duration) var(--reveal-easing) var(--reveal-delay, 0ms),
      transform var(--reveal-duration) var(--reveal-easing) var(--reveal-delay, 0ms);
    will-change: opacity, transform;
  }

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

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* Accessibility */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Portfolio page hero */
.page-hero {
  padding: 64px 0 48px;
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
}

.page-hero p {
  color: var(--color-text-muted);
  margin-top: 12px;
}

/* Responsive */
@media (max-width: 992px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image {
    order: -1;
  }
}

@media (max-width: 768px) {
  .container {
    width: min(100% - 32px, var(--max-width));
  }

  .site-nav ul {
    gap: 20px;
  }

  .hero {
    padding: 72px 0 88px;
  }

  .section {
    padding: 56px 0;
  }

  .portfolio-card {
    padding: 24px;
    border-radius: var(--radius-md);
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 480px) {
  .logo-img {
    height: 28px;
  }

  .site-nav a {
    font-size: 14px;
  }
}