@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

/* ===== 变量 ===== */
:root {
  --c-primary: #56228b;
  --c-primary-light: #7a3db8;
  --c-primary-dark: #3d1663;
  --c-accent: #8b4513;
  --c-accent-light: #b05a1a;
  --c-dark: #1f1726;
  --c-darker: #150f1a;
  --c-surface: #2a1e35;
  --c-surface2: #341f4a;
  --c-text: #e8dff5;
  --c-text-muted: #a990c8;
  --c-border: rgba(86,34,139,0.4);
  --c-border-accent: rgba(139,69,19,0.5);
  --radius-sm: 4px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --header-h: 64px;
  --aside-w: 220px;
  --content-max: 860px;
  --transition: 0.28s cubic-bezier(0.4,0,0.2,1);
}

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

/* ===== 点阵底纹 ===== */
.dot-grid, .hero-placeholder {
  background-image: radial-gradient(circle, rgba(86,34,139,0.35) 1px, transparent 1px);
  background-size: 22px 22px;
}

/* ===== 站点整体包裹 ===== */
.site-wrap {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(31,23,38,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
}
.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--c-text);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.01em;
}
.brand-link:hover { color: var(--c-primary-light); }
.brand-logo { border-radius: var(--radius-sm); }
.brand-name { white-space: nowrap; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.contact-btn {
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 18px;
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  color: var(--c-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}
.contact-btn:hover {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

/* ===== 汉堡按钮 ===== */
.burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  transition: background var(--transition);
}
.burger:hover { background: var(--c-surface2); }
.burger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 遮罩 ===== */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 149;
  background: rgba(15,10,22,0.7);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.overlay.is-active {
  opacity: 1;
  pointer-events: all;
}

/* ===== 侧边菜单抽屉 (aside > nav > ul > li > a) ===== */
.site-aside {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 150;
  width: min(340px, 90vw);
  height: 100vh;
  background: var(--c-darker);
  border-left: 1px solid var(--c-border);
  transform: translateX(100%);
  transition: transform var(--transition);
  overflow-y: auto;
  padding: 80px 0 40px;
}
.site-aside.is-open {
  transform: translateX(0);
}
.aside-nav {
  padding: 0 24px;
}
.aside-nav ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.aside-nav ul li a {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  color: var(--c-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: background var(--transition), color var(--transition);
  border: 1px solid transparent;
}
.aside-nav ul li a:hover,
.aside-nav ul li a[aria-current="page"] {
  background: var(--c-surface2);
  color: var(--c-text);
  border-color: var(--c-border);
}

/* ===== 通用 aside 面板（内容区左侧） ===== */
.service-aside,
.hero-aside,
.faq-aside,
.about-aside,
.contact-aside,
.privacy-aside,
.cases-aside,
.content-aside,
.service-body-aside,
.faq-content-aside,
.about-content-aside,
.contact-form-aside,
.privacy-content-aside {
  width: var(--aside-w);
  flex-shrink: 0;
}
.aside-heading {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-accent-light);
  margin-bottom: 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--c-border-accent);
}
.aside-heading span { display: inline; }
.aside-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.aside-links li a {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--c-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}
.aside-links li a:hover {
  background: var(--c-surface);
  color: var(--c-text);
}
.aside-divider {
  height: 1px;
  background: var(--c-border);
  margin: 20px 0;
}
.aside-tip {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
  padding: 10px 12px;
  background: var(--c-surface);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--c-accent);
}

/* ===== Hero（首页） ===== */
.hero-section {
  display: flex;
  gap: 40px;
  min-height: calc(100vh - var(--header-h));
  padding: 60px 40px 60px 60px;
  max-width: 1300px;
  margin: 0 auto;
  width: 100%;
  align-items: flex-start;
}
.hero-aside {
  padding-top: 20px;
}
.hero-nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.hero-nav-list li a {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--c-text-muted);
  font-size: 0.8rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
  border-left: 2px solid transparent;
}
.hero-nav-list li a:hover {
  background: var(--c-surface);
  color: var(--c-text);
  border-left-color: var(--c-primary);
}
.hero-content {
  flex: 1;
  display: flex;
  gap: 48px;
  align-items: center;
}
.hero-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.hero-h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-text);
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--c-text-muted);
  line-height: 1.7;
  max-width: 480px;
}
.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  background: var(--c-primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-lg);
  transition: background var(--transition), transform var(--transition);
  border: 2px solid var(--c-primary);
}
.btn-primary:hover {
  background: var(--c-primary-dark);
  color: #fff;
  transform: translateY(-1px);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  background: transparent;
  color: var(--c-text);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-lg);
  border: 2px solid var(--c-border);
  transition: border-color var(--transition), background var(--transition);
}
.btn-outline:hover {
  border-color: var(--c-primary-light);
  background: rgba(86,34,139,0.1);
  color: var(--c-text);
}
.hero-figure {
  width: 380px;
  height: 340px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--c-surface);
  border: 2px solid var(--c-border);
  position: relative;
}
.hero-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-placeholder .dot-grid {
  position: absolute;
  inset: 0;
  border-radius: inherit;
}
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== 内容区两栏布局通用 ===== */
.content-section,
.service-body-section,
.faq-content-section,
.about-content-section,
.contact-form-section,
.privacy-content-section {
  display: flex;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 40px;
  width: 100%;
}
.content-body, .service-content-figure, .faq-content-figure,
.about-content-figure, .contact-form-figure, .privacy-content-figure {
  flex: 1;
  min-width: 0;
}

/* ===== 正文 figure 包裹 ===== */
.service-content-figure,
.faq-content-figure,
.about-content-figure,
.contact-figure,
.contact-form-figure,
.privacy-content-figure,
.privacy-intro-figure,
.cases-intro-figure,
.service-hero-figure {
  flex: 1;
  min-width: 0;
}

/* ===== page-content 通用 ===== */
.page-content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-text);
}
.page-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--c-text);
  margin: 32px 0 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--c-border);
}
.page-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--c-primary-light);
  margin: 24px 0 8px;
}
.page-content p { margin-bottom: 16px; }
.page-content ul, .page-content ol {
  padding-left: 20px;
  margin-bottom: 16px;
}
.page-content li { margin-bottom: 6px; }
.page-content a {
  color: var(--c-primary-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-content a:hover { color: var(--c-accent-light); }
.page-content strong { color: var(--c-text); font-weight: 600; }
.page-content blockquote {
  border-left: 3px solid var(--c-primary);
  padding: 12px 16px;
  margin: 20px 0;
  background: var(--c-surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--c-text-muted);
  font-style: italic;
}

/* ===== 日期行 ===== */
.date-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.pub-date, .mod-date {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  background: var(--c-surface);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--c-text-muted);
  margin-bottom: 16px;
}
.breadcrumb a { color: var(--c-text-muted); }
.breadcrumb a:hover { color: var(--c-primary-light); }
.breadcrumb span { color: var(--c-text-muted); }

/* ===== service 布局 ===== */
.service-main { display: flex; flex-direction: column; }
.service-hero {
  display: flex;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 40px 32px;
  width: 100%;
  align-items: flex-start;
}
.service-hero-text { flex: 1; min-width: 0; }
.service-h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--c-text);
}
.service-hero-figure {
  margin-top: 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--c-border);
}
.service-hero-img {
  width: 100%;
  max-height: 300px;
  object-fit: cover;
}

/* ===== cases 布局 ===== */
.cases-main { display: flex; flex-direction: column; }
.cases-intro {
  display: flex;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 40px 32px;
  width: 100%;
  align-items: flex-start;
}
.cases-intro-figure { flex: 1; min-width: 0; }
.cases-h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--c-text);
}
.cases-list-section {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px 60px;
  width: 100%;
}

/* ===== 卡片（描边无阴影，4px圆角） ===== */
.case-card, .home-card {
  display: flex;
  flex-direction: column;
  background: var(--c-surface);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}
.case-card:hover, .home-card:hover {
  border-color: var(--c-primary-light);
  transform: translateY(-2px);
}
.case-figure, .card-figure {
  width: 100%;
  height: 180px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--c-surface2);
}
.case-figure-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-surface2);
  border-bottom: 1px solid var(--c-border);
}
.case-num {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--c-primary);
  opacity: 0.4;
}
.case-img, .card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.case-body, .card-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  flex: 1;
}
.case-title, .card-title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-text);
}
.case-title span, .card-title span { display: inline; }
.case-desc, .card-desc {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  line-height: 1.6;
  flex: 1;
}
.card-date { font-size: 0.75rem; color: var(--c-text-muted); }
.card-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  margin-top: 4px;
  padding: 0 14px;
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  color: var(--c-primary-light);
  font-size: 0.85rem;
  font-weight: 600;
  align-self: flex-start;
  transition: background var(--transition), border-color var(--transition);
}
.card-link:hover {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

/* ===== 首页 cards-section ===== */
.cards-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px 60px;
  width: 100%;
}
.section-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 24px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--c-border);
}
.section-title span { display: inline; }
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

/* ===== 首页 content-section ===== */
.home-main { display: flex; flex-direction: column; }
.content-section {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}

/* ===== faq 布局 ===== */
.faq-main { display: flex; flex-direction: column; }
.faq-header-section {
  display: flex;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 40px 32px;
  width: 100%;
  align-items: flex-start;
}
.faq-intro-figure { flex: 1; min-width: 0; }
.faq-h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--c-text);
}
.faq-content-section {
  display: flex;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px 60px;
  width: 100%;
}
.faq-content-figure { flex: 1; min-width: 0; }

/* ===== about 布局 ===== */
.about-main { display: flex; flex-direction: column; }
.about-hero-section {
  display: flex;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 40px 32px;
  width: 100%;
  align-items: flex-start;
}
.about-hero-figure {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.about-h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--c-text);
}
.about-blob {
  width: 100%;
  height: 160px;
  border-radius: var(--radius-xl) var(--radius-md) var(--radius-xl) var(--radius-md);
  background: linear-gradient(135deg, var(--c-primary-dark) 0%, var(--c-surface2) 100%);
  background-image: radial-gradient(circle at 30% 50%, rgba(86,34,139,0.5) 0%, transparent 60%),
    radial-gradient(circle at 70% 30%, rgba(139,69,19,0.3) 0%, transparent 50%);
  border: 2px solid var(--c-border);
}
.about-hero-img {
  width: 100%;
  max-height: 220px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 2px solid var(--c-border);
}
.about-content-section {
  display: flex;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px 60px;
  width: 100%;
}
.about-content-figure { flex: 1; min-width: 0; }

/* ===== contact 布局 ===== */
.contact-main { display: flex; flex-direction: column; }
.contact-intro-section {
  display: flex;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 40px 32px;
  width: 100%;
  align-items: flex-start;
}
.contact-figure { flex: 1; min-width: 0; }
.contact-h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--c-text);
}
.contact-card {
  background: var(--c-surface);
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 8px;
}
.contact-form-section {
  display: flex;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px 60px;
  width: 100%;
}
.contact-form-figure { flex: 1; min-width: 0; }
.simple-form-wrap { padding: 24px 0; }
.form-tip {
  color: var(--c-text-muted);
  font-size: 0.9rem;
  padding: 16px;
  background: var(--c-surface);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--c-primary);
}

/* ===== privacy 布局 ===== */
.privacy-main { display: flex; flex-direction: column; }
.privacy-intro-section {
  display: flex;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 40px 32px;
  width: 100%;
  align-items: flex-start;
}
.privacy-intro-figure { flex: 1; min-width: 0; }
.privacy-h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--c-text);
}
.privacy-content-section {
  display: flex;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px 60px;
  width: 100%;
}
.privacy-content-figure { flex: 1; min-width: 0; }

/* ===== 页脚（仅 p + small） ===== */
.site-footer {
  margin-top: auto;
  background: var(--c-darker);
  border-top: 1px solid var(--c-border);
  padding: 28px 40px;
  text-align: center;
}
.footer-brand {
  font-size: 0.875rem;
  color: var(--c-text-muted);
  margin-bottom: 6px;
}
.footer-brand a {
  color: var(--c-text-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.footer-brand a:hover { color: var(--c-primary-light); }
.footer-note {
  font-size: 0.75rem;
  color: rgba(169,144,200,0.5);
  display: block;
}

/* ===== 滚动揭示动效 ===== */
@media (prefers-reduced-motion: no-preference) {
  .reveal-item {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.5s ease, transform 0.5s ease;
  }
  .reveal-item.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
  .cards-grid .home-card,
  .cases-list-section .case-card {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, border-color var(--transition);
  }
  .cards-grid .home-card.is-visible,
  .cases-list-section .case-card.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
  .cards-grid .home-card:nth-child(2), .cases-list-section .case-card:nth-child(2) { transition-delay: 0.08s; }
  .cards-grid .home-card:nth-child(3), .cases-list-section .case-card:nth-child(3) { transition-delay: 0.16s; }
  .cards-grid .home-card:nth-child(4), .cases-list-section .case-card:nth-child(4) { transition-delay: 0.24s; }
  .cards-grid .home-card:nth-child(5), .cases-list-section .case-card:nth-child(5) { transition-delay: 0.32s; }
  .cards-grid .home-card:nth-child(6), .cases-list-section .case-card:nth-child(6) { transition-delay: 0.40s; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal-item, .cards-grid .home-card, .cases-list-section .case-card {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ===== 断点：平板 ===== */
@media (max-width: 900px) {
  .hero-section {
    flex-direction: column;
    padding: 40px 24px;
    min-height: auto;
    gap: 24px;
  }
  .hero-aside { display: none; }
  .hero-content { flex-direction: column; gap: 32px; }
  .hero-figure { width: 100%; height: 220px; }
  .content-section,
  .service-body-section,
  .faq-content-section,
  .about-content-section,
  .contact-form-section,
  .privacy-content-section {
    flex-direction: column;
    padding: 32px 24px;
    gap: 24px;
  }
  .service-aside,
  .faq-aside,
  .about-aside,
  .contact-aside,
  .privacy-aside,
  .cases-aside,
  .content-aside,
  .service-body-aside,
  .faq-content-aside,
  .about-content-aside,
  .contact-form-aside,
  .privacy-content-aside { width: 100%; }
  .service-hero,
  .cases-intro,
  .faq-header-section,
  .about-hero-section,
  .contact-intro-section,
  .privacy-intro-section {
    flex-direction: column;
    padding: 32px 24px;
    gap: 24px;
  }
  .cases-list-section { padding: 0 24px 48px; gap: 16px; }
  .cards-section { padding: 0 24px 48px; }
  .cards-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
}

/* ===== 断点：手机 ===== */
@media (max-width: 600px) {
  :root { --header-h: 56px; }
  .header-inner { padding: 0 16px; }
  .brand-name { font-size: 0.95rem; }
  .contact-btn { padding: 0 12px; font-size: 0.8rem; }
  .hero-section { padding: 28px 16px; }
  .hero-h1 { font-size: 1.7rem; }
  .hero-sub { font-size: 0.95rem; }
  .hero-cta { flex-direction: column; gap: 10px; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .hero-figure { height: 180px; }
  .service-hero, .cases-intro, .faq-header-section,
  .about-hero-section, .contact-intro-section, .privacy-intro-section {
    padding: 24px 16px;
  }
  .content-section, .service-body-section, .faq-content-section,
  .about-content-section, .contact-form-section, .privacy-content-section {
    padding: 24px 16px;
  }
  .cases-list-section { padding: 0 16px 40px; grid-template-columns: 1fr; }
  .cards-section { padding: 0 16px 40px; }
  .cards-grid { grid-template-columns: 1fr; }
  .site-footer { padding: 20px 16px; }
  .aside-nav { padding: 0 16px; }
}