@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Thai:wght@300;400;500;700&display=swap');

/* ===== 变量 ===== */
:root {
  --c-bg: #1a1a2e;
  --c-accent: #c0a9c7;
  --c-light: #f5e6f0;
  --c-bg2: #22223a;
  --c-bg3: #2a1f35;
  --c-border: rgba(192,169,199,0.25);
  --c-text: #e8d8f0;
  --c-muted: rgba(232,216,240,0.6);
  --c-cta: #c0a9c7;
  --c-cta-hover: #f5e6f0;
  --radius-card: 28px;
  --nav-h: 64px;
  --font: 'Noto Sans Thai', 'Noto Sans SC', system-ui, sans-serif;
  --max-w: 1200px;
  --content-max: 760px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--c-accent); text-decoration: none; transition: color var(--transition); }
a:hover, a:focus { color: var(--c-light); }
ul { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: 1rem; }

/* ===== 滚动视差基础 ===== */
.parallax-hero {
  position: relative;
  overflow: hidden;
  will-change: transform;
}
.parallax-layer {
  position: relative;
  overflow: hidden;
}

/* ===== 页面包裹 ===== */
.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ===== 顶部导航 aside > nav > ul > li > a ===== */
.site-aside {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(26,26,46,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
  width: 100%;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-w);
  margin: 0 auto;
  height: var(--nav-h);
  padding: 0 24px;
  gap: 16px;
}

.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.nav-right { justify-content: flex-end; }

.nav-left a, .nav-right a {
  font-size: 0.85rem;
  color: var(--c-muted);
  padding: 8px 10px;
  border-radius: 6px;
  white-space: nowrap;
  transition: color var(--transition), background var(--transition);
  min-height: 40px;
  display: flex;
  align-items: center;
}
.nav-left a:hover, .nav-right a:hover,
.nav-left a[aria-current], .nav-right a[aria-current] {
  color: var(--c-light);
  background: rgba(192,169,199,0.1);
}

.brand-center {
  display: flex;
  justify-content: center;
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--c-light);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.02em;
}
.brand-link:hover { color: var(--c-accent); }
.brand-logo-img { width: 36px; height: 36px; object-fit: contain; border-radius: 6px; }
.brand-name { white-space: nowrap; }

.nav-cta {
  background: var(--c-accent) !important;
  color: var(--c-bg) !important;
  font-weight: 600;
  border-radius: 8px;
  padding: 8px 16px !important;
  margin-left: 8px;
  min-height: 40px;
  display: flex;
  align-items: center;
}
.nav-cta:hover { background: var(--c-light) !important; color: var(--c-bg) !important; }

/* 移动端导航 */
.aside-nav { display: none; }
.aside-nav ul {
  display: flex;
  flex-direction: column;
  padding: 8px 16px 16px;
  gap: 4px;
}
.aside-nav ul li a {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  min-height: 44px;
  border-radius: 8px;
  color: var(--c-muted);
  font-size: 0.95rem;
  transition: background var(--transition), color var(--transition);
}
.aside-nav ul li a:hover,
.aside-nav ul li a[aria-current] { background: rgba(192,169,199,0.12); color: var(--c-light); }
.aside-nav ul li a.nav-cta {
  background: var(--c-accent);
  color: var(--c-bg);
  font-weight: 600;
  margin-top: 4px;
}

/* ===== 内容区布局 ===== */
.content-wrap {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px;
  width: 100%;
  flex: 1;
}
.content-wrap-wide { grid-template-columns: 1fr 260px; }
.content-wrap-narrow { grid-template-columns: minmax(0,680px) 260px; }

/* main > section > article 三层 */
.main-content { min-width: 0; }
.page-article { display: flex; flex-direction: column; gap: 40px; }
.page-hero-section { padding-bottom: 24px; border-bottom: 1px solid var(--c-border); }
.page-body-section { }
.page-content-inner {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--c-text);
}

.page-h1 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--c-light);
  line-height: 1.3;
  margin-bottom: 12px;
}
.page-sub {
  color: var(--c-muted);
  font-size: 1rem;
  margin-top: 8px;
}
.page-date {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--c-accent);
  margin-top: 6px;
  font-weight: 500;
}

/* 正文内容样式 */
.page-content-inner h2,
.page-content-inner h3 { color: var(--c-light); margin: 28px 0 12px; line-height: 1.4; }
.page-content-inner h2 { font-size: 1.3rem; }
.page-content-inner h3 { font-size: 1.1rem; }
.page-content-inner p { margin-bottom: 16px; }
.page-content-inner ul, .page-content-inner ol { padding-left: 20px; margin-bottom: 16px; }
.page-content-inner li { margin-bottom: 6px; }
.page-content-inner a { color: var(--c-accent); text-decoration: underline; text-underline-offset: 3px; }
.page-content-inner a:hover { color: var(--c-light); }
.page-content-inner strong { color: var(--c-light); }
.prose { max-width: var(--content-max); }

/* ===== 侧边栏 aside ===== */
.content-aside {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-self: start;
  position: sticky;
  top: calc(var(--nav-h) + 24px);
}

.aside-card {
  background: var(--c-bg2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-card);
  padding: 20px;
}

.aside-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--c-accent);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.aside-title span { display: inline; }

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

.aside-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(192,169,199,0.06);
  border: 1px solid var(--c-border);
  transition: background var(--transition), border-color var(--transition);
  min-height: 40px;
}
.aside-link strong {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-text);
  transition: color var(--transition);
}
.aside-link:hover {
  background: rgba(192,169,199,0.15);
  border-color: var(--c-accent);
}
.aside-link:hover strong { color: var(--c-light); }

.aside-cta-card { border-color: var(--c-accent); }
.aside-cta-text { font-size: 0.875rem; color: var(--c-muted); margin-bottom: 12px; }

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-accent);
  color: var(--c-bg);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 12px 28px;
  border-radius: 10px;
  min-height: 44px;
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.btn-primary:hover { background: var(--c-light); color: var(--c-bg); transform: translateY(-1px); }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--c-accent);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 28px;
  border-radius: 10px;
  border: 1.5px solid var(--c-accent);
  min-height: 44px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.btn-ghost:hover { background: var(--c-accent); color: var(--c-bg); }
.btn-block { width: 100%; }

/* ===== 段落标题 ===== */
.section-heading {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 700;
  color: var(--c-light);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-heading span { display: inline; }
.section-heading::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 1.2em;
  background: var(--c-accent);
  border-radius: 2px;
  flex-shrink: 0;
}

/* ===== 首页 Hero ===== */
.hero-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 40px;
  min-height: 45vh;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 24px;
  width: 100%;
}
.hero-text { display: flex; flex-direction: column; gap: 16px; }
.hero-h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--c-light);
  line-height: 1.25;
}
.hero-sub { font-size: 1.0625rem; color: var(--c-muted); max-width: 480px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.hero-media { border-radius: var(--radius-card); overflow: hidden; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius-card); }
.hero-media-placeholder {
  background: linear-gradient(135deg, var(--c-bg3) 0%, var(--c-bg2) 100%);
  min-height: 260px;
  border-radius: var(--radius-card);
  border: 1px solid var(--c-border);
}

/* ===== 首页主内容 ===== */
.home-wrapper .content-section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}
.home-wrapper .main-content {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px;
  width: 100%;
}
.home-wrapper .page-article { gap: 56px; }

/* ===== 卡片网格（描边28px圆角）===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.feature-card {
  display: flex;
  flex-direction: column;
  background: var(--c-bg2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
  color: var(--c-text);
}
.feature-card:hover {
  border-color: var(--c-accent);
  transform: translateY(-3px);
  color: var(--c-text);
}
.card-media img { width: 100%; height: 160px; object-fit: cover; }
.card-body { padding: 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-title { font-size: 0.95rem; font-weight: 600; color: var(--c-light); line-height: 1.4; }
.card-desc { font-size: 0.85rem; color: var(--c-muted); flex: 1; }

/* ===== 案例列表 ===== */
.cases-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.case-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 20px;
  background: var(--c-bg2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-card);
  transition: border-color var(--transition), background var(--transition);
  color: var(--c-text);
}
.case-card:hover { border-color: var(--c-accent); background: var(--c-bg3); color: var(--c-text); }
.case-title { font-size: 0.9rem; font-weight: 600; color: var(--c-light); }
.case-meta { font-size: 0.8rem; color: var(--c-accent); }
.view-more {
  display: inline-block;
  margin-top: 16px;
  color: var(--c-accent);
  font-weight: 600;
  font-size: 0.9rem;
}
.view-more:hover { color: var(--c-light); }

/* ===== 揭示动画 ===== */
.reveal-section {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-section.visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal-section { opacity: 1; transform: none; transition: none; }
  .parallax-hero { transform: none !important; }
}

/* ===== Service 页面 ===== */
.service-hero-strip {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  align-items: center;
  gap: 32px;
  background: linear-gradient(135deg, var(--c-bg3) 0%, var(--c-bg2) 100%);
  border-bottom: 1px solid var(--c-border);
  max-width: 100%;
  padding: 40px min(60px, 5vw);
}
.service-hero-text { padding: 8px 0; }
.service-h1 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--c-light);
  line-height: 1.3;
  margin-bottom: 10px;
}
.service-desc { color: var(--c-muted); font-size: 1rem; margin-top: 10px; max-width: 520px; }
.service-hero-media img { border-radius: var(--radius-card); width: 100%; max-height: 300px; object-fit: cover; }

.sibling-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.sibling-links .aside-link {
  flex: 1 1 180px;
}

/* ===== Cases 页面 ===== */
.cases-banner {
  background: linear-gradient(160deg, var(--c-bg3) 0%, var(--c-bg) 100%);
  border-bottom: 1px solid var(--c-border);
  padding: 48px min(60px, 5vw);
}
.cases-h1 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--c-light);
  line-height: 1.3;
  margin-bottom: 10px;
}
.cases-index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.case-index-card {
  display: flex;
  flex-direction: column;
  background: var(--c-bg2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
  color: var(--c-text);
}
.case-index-card:hover { border-color: var(--c-accent); transform: translateY(-3px); color: var(--c-text); }
.case-card-media img { width: 100%; height: 180px; object-fit: cover; }
.case-card-body { padding: 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.case-card-title { font-size: 0.95rem; font-weight: 700; color: var(--c-light); }
.case-card-desc { font-size: 0.85rem; color: var(--c-muted); flex: 1; }
.case-card-date { font-size: 0.8rem; color: var(--c-accent); }

/* ===== About 页面 ===== */
.about-header {
  background: linear-gradient(135deg, var(--c-bg3) 0%, var(--c-bg2) 60%, var(--c-bg) 100%);
  border-bottom: 1px solid var(--c-border);
  padding: 64px min(60px, 5vw);
}
.about-h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--c-light);
  margin-bottom: 12px;
  line-height: 1.25;
}
.about-sub { color: var(--c-muted); font-size: 1.0625rem; max-width: 560px; margin-top: 10px; }

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.value-item {
  padding: 24px;
  background: var(--c-bg2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-card);
}
.value-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-accent);
  margin-bottom: 10px;
}
.value-title span { display: inline; }
.value-item p { font-size: 0.9rem; color: var(--c-muted); }

/* ===== Contact 表单 ===== */
.contact-form-section { max-width: 560px; }
.contact-form { display: flex; flex-direction: column; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.875rem; font-weight: 600; color: var(--c-accent); }
.form-group input, .form-group textarea {
  background: var(--c-bg2);
  border: 1px solid var(--c-border);
  border-radius: 10px;
  color: var(--c-text);
  padding: 12px 14px;
  font-size: 1rem;
  transition: border-color var(--transition);
  width: 100%;
}
.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--c-accent);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--c-muted); }

/* ===== 页脚 footer > div + nav ===== */
.site-footer {
  background: var(--c-bg2);
  border-top: 1px solid var(--c-border);
  margin-top: auto;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px 24px;
}
.footer-brand { display: flex; flex-direction: column; gap: 12px; }
.footer-desc { font-size: 0.875rem; color: var(--c-muted); max-width: 320px; line-height: 1.6; }
.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-nav ul li a {
  font-size: 0.875rem;
  color: var(--c-muted);
  padding: 4px 0;
  display: inline-block;
  min-height: 32px;
  line-height: 32px;
  transition: color var(--transition);
}
.footer-nav ul li a:hover,
.footer-nav ul li a[aria-current] { color: var(--c-light); }

.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 16px 24px;
  border-top: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
}
.copyright { font-size: 0.8rem; color: var(--c-muted); }

/* ===== 功能性区域 ===== */
.content-section { padding: 0; }
.features-section, .cases-section, .about-values, .cases-list-section,
.contact-form-section, .related-nav-section { }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .content-wrap,
  .content-wrap-wide,
  .content-wrap-narrow {
    grid-template-columns: 1fr;
  }
  .content-aside {
    position: static;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .service-hero-strip {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  :root { --nav-h: auto; }
  .nav-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 16px;
    gap: 8px;
  }
  .nav-left, .nav-right { display: none; }
  .brand-center { flex: 1; justify-content: center; padding: 6px 0; }
  .aside-nav { display: block; }

  .hero-section {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 32px 16px;
  }
  .hero-media { order: -1; }
  .hero-media-placeholder { min-height: 180px; }
  .hero-h1 { font-size: 1.5rem; }

  .content-wrap,
  .content-wrap-wide,
  .content-wrap-narrow {
    padding: 24px 16px;
  }

  .service-hero-strip {
    padding: 28px 16px;
    gap: 20px;
  }
  .cases-banner { padding: 32px 16px; }
  .about-header { padding: 40px 16px; }

  .cards-grid { grid-template-columns: 1fr; }
  .cases-list { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .cases-index-grid { grid-template-columns: 1fr; }

  .sibling-links { flex-direction: column; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-ghost { width: 100%; justify-content: center; }

  .footer-inner { padding: 28px 16px 16px; }
  .footer-bottom { padding: 12px 16px; }
}

@media (max-width: 400px) {
  .page-h1, .hero-h1, .about-h1, .cases-h1, .service-h1 { font-size: 1.3rem; }
}