/* roulang page: index */
/* ============ 设计变量 ============ */
:root {
  --primary: #0b1e3a;
  --primary-light: #16325c;
  --primary-deep: #071428;
  --accent: #eab308;
  --accent-strong: #c48f00;
  --accent-soft: #fef3c7;
  --blue: #2563eb;
  --bg: #f7f8fa;
  --white: #ffffff;
  --text: #111827;
  --text-weak: #6b7280;
  --text-faint: #9ca3af;
  --border: #e5e7eb;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.05);
  --shadow-md: 0 10px 28px rgba(0,0,0,.08);
  --shadow-lg: 0 20px 48px rgba(0,0,0,.12);
  --section-space: 100px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ============ Reset / Base ============ */
*, *::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(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color .25s ease;
}
img {
  max-width: 100%;
  display: block;
}
button,
input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}
ul, ol {
  list-style: none;
}
:focus-visible {
  outline: 3px solid rgba(234,179,8,.45);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ============ 容器 ============ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ============ 导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.86);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid rgba(229,231,235,.72);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 74px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--primary);
  white-space: nowrap;
}
.logo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
  box-shadow: 0 0 0 4px rgba(234,179,8,.18);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: 8px;
  transition: background .2s, color .2s;
}
.nav-link:hover {
  background: rgba(11,30,58,.06);
  color: var(--primary);
}
.nav-link.active {
  color: var(--primary);
  font-weight: 700;
  background: rgba(234,179,8,.12);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
}
.search-box {
  display: flex;
  align-items: center;
  background: #f1f2f4;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 8px 16px;
  width: 230px;
  transition: all .25s;
}
.search-box:focus-within {
  border-color: var(--accent);
  background: var(--white);
  box-shadow: 0 0 0 4px rgba(234,179,8,.14);
}
.search-box svg {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--text-faint);
  margin-right: 8px;
}
.search-box input {
  border: none;
  outline: none;
  background: transparent;
  width: 100%;
  font-size: 14px;
  color: var(--text);
}
.search-box input::placeholder {
  color: var(--text-faint);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--white);
  cursor: pointer;
  transition: border-color .2s, background .2s;
}
.nav-toggle:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}
.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 2px 10px rgba(11,30,58,.18);
}
.btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(11,30,58,.22);
}
.btn-accent {
  background: var(--accent);
  color: var(--primary);
  box-shadow: 0 2px 10px rgba(234,179,8,.25);
}
.btn-accent:hover {
  background: var(--accent-strong);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(234,179,8,.32);
}
.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,.55);
  color: var(--white);
}
.btn-outline:hover {
  background: rgba(255,255,255,.12);
  border-color: var(--white);
  transform: translateY(-2px);
}
.btn-outline-dark {
  background: transparent;
  border-color: var(--border);
  color: var(--primary);
}
.btn-outline-dark:hover {
  border-color: var(--primary);
  background: rgba(11,30,58,.04);
  transform: translateY(-2px);
}
.btn-lg {
  padding: 15px 34px;
  font-size: 16px;
  border-radius: 12px;
}

/* ============ Hero 首屏 ============ */
.hero {
  position: relative;
  min-height: 660px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center 20%;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(7,20,40,.95) 0%, rgba(7,20,40,.78) 45%, rgba(7,20,40,.28) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 90px 0 120px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.22);
  color: rgba(255,255,255,.9);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .04em;
  backdrop-filter: blur(6px);
  margin-bottom: 28px;
}
.hero-badge .pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(234,179,8,.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(234,179,8,.55); }
  75% { box-shadow: 0 0 0 10px rgba(234,179,8,0); }
  100% { box-shadow: 0 0 0 0 rgba(234,179,8,0); }
}
.hero-title {
  font-size: clamp(38px, 5vw, 58px);
  font-weight: 800;
  line-height: 1.14;
  color: var(--white);
  letter-spacing: -.02em;
  max-width: 640px;
  text-shadow: 0 2px 24px rgba(0,0,0,.25);
}
.hero-title .text-accent {
  color: var(--accent);
  position: relative;
}
.hero-subtitle {
  margin-top: 24px;
  font-size: 18px;
  line-height: 1.75;
  color: rgba(255,255,255,.85);
  max-width: 580px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 38px;
}
.hero-note {
  margin-top: 30px;
  color: rgba(255,255,255,.55);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-note svg {
  width: 16px;
  height: 16px;
}
.hero-strip {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  z-index: 3;
  width: calc(100% - 64px);
  max-width: 1100px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  border-radius: 20px 20px 0 0;
  box-shadow: 0 -10px 40px rgba(0,0,0,.15);
}
.strip-item {
  padding: 26px 16px;
  text-align: center;
  border-right: 1px solid var(--border);
}
.strip-item:last-child {
  border-right: none;
}
.strip-num {
  display: block;
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
}
.strip-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--text-weak);
}

/* ============ 通用板块 ============ */
.section {
  padding: var(--section-space) 0;
}
.section-gray {
  background: var(--bg);
}
.section-white {
  background: var(--white);
}
.section-head {
  max-width: 680px;
  margin-bottom: 52px;
}
.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .03em;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 800;
  line-height: 1.22;
  color: var(--primary);
  letter-spacing: -.01em;
  margin-bottom: 16px;
}
.section-sub {
  font-size: 16px;
  color: var(--text-weak);
  line-height: 1.7;
}

/* ============ 图文介绍 Intro ============ */
.intro-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}
.intro-text h2 {
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.25;
  margin-bottom: 20px;
}
.intro-text p {
  color: var(--text-weak);
  line-height: 1.8;
  margin-bottom: 16px;
}
.intro-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  transition: all .2s;
}
.tag:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--primary);
}
.intro-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.intro-media img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}
.intro-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,30,58,0) 65%, rgba(11,30,58,.35) 100%);
  pointer-events: none;
}
.media-caption {
  position: absolute;
  left: 24px;
  bottom: 20px;
  z-index: 2;
  color: var(--white);
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,0,0,.3);
  backdrop-filter: blur(6px);
  padding: 8px 16px;
  border-radius: 999px;
}

/* ============ 能力卡片 Features ============ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 38px 32px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform .3s, box-shadow .3s, border-color .3s;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.feature-card:hover::before {
  transform: scaleX(1);
}
.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  box-shadow: 0 6px 16px rgba(11,30,58,.2);
}
.feature-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent);
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}
.feature-card p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-weak);
}

/* ============ 分类入口 Categories ============ */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}
.cat-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow-md);
  transition: transform .35s, box-shadow .35s;
}
.cat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.cat-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.cat-card:hover img {
  transform: scale(1.04);
}
.cat-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,30,58,0) 25%, rgba(7,20,40,.88) 100%);
}
.cat-card-body {
  position: relative;
  z-index: 2;
  padding: 36px;
  color: var(--white);
}
.cat-card-body h3 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: -.01em;
}
.cat-card-body p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,.8);
  max-width: 360px;
  margin-bottom: 20px;
}
.cat-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  transition: gap .25s;
}
.cat-link:hover {
  gap: 12px;
}
.cat-link svg {
  width: 16px;
  height: 16px;
}
.cat-tag {
  position: absolute;
  top: 22px;
  left: 22px;
  z-index: 2;
  background: rgba(255,255,255,.16);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--white);
}

/* ============ 资讯列表 News ============ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all .3s;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.news-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.news-cat {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--blue);
  background: rgba(37,99,235,.08);
  padding: 4px 14px;
  border-radius: 999px;
}
.news-date {
  font-size: 13px;
  color: var(--text-faint);
}
.news-card h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--primary);
  transition: color .2s;
}
.news-card:hover h3 {
  color: var(--blue);
}
.news-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-more {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-more svg {
  width: 15px;
  height: 15px;
  transition: transform .25s;
}
.news-card:hover .news-more svg {
  transform: translateX(4px);
}
.empty-tip {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 24px;
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px dashed var(--border);
  color: var(--text-weak);
  font-size: 15px;
}

/* ============ 服务流程 Steps ============ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-card {
  position: relative;
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform .3s, box-shadow .3s;
}
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 20px;
}
.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.step-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.75;
}
.step-arrow {
  position: absolute;
  top: 50%;
  right: -20px;
  transform: translateY(-50%);
  color: var(--text-faint);
  z-index: 2;
}
.step-arrow svg {
  width: 20px;
  height: 20px;
}
.step-card:last-child .step-arrow {
  display: none;
}

/* ============ FAQ ============ */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
}
.faq-item {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow .25s;
}
.faq-item:hover {
  box-shadow: var(--shadow-md);
}
.faq-item details {
  padding: 0 24px;
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  user-select: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '+';
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 600;
  transition: transform .3s, background .3s, color .3s;
}
.faq-item details[open] summary::after {
  transform: rotate(45deg);
  background: var(--accent);
  color: var(--white);
}
.faq-answer {
  padding: 0 0 22px;
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
}

/* ============ CTA ============ */
.cta-section {
  padding-top: 0;
}
.cta-block {
  position: relative;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-lg);
  padding: 72px 56px;
  text-align: center;
  color: var(--white);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(7,20,40,.92), rgba(11,30,58,.76));
}
.cta-block > * {
  position: relative;
  z-index: 2;
}
.cta-title {
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -.01em;
}
.cta-text {
  font-size: 16px;
  color: rgba(255,255,255,.8);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.75;
}
.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--primary-deep);
  color: rgba(255,255,255,.65);
  padding: 60px 0 30px;
}
.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .logo {
  color: var(--white);
  margin-bottom: 16px;
}
.footer-brand .logo .logo-dot {
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(234,179,8,.2);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 300px;
  color: rgba(255,255,255,.55);
  margin-bottom: 20px;
}
.footer-col h4 {
  color: var(--white);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  font-size: 14px;
  color: rgba(255,255,255,.6);
  transition: color .2s;
}
.footer-col ul a:hover {
  color: var(--accent);
}
.footer-contact-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,.6);
  margin-bottom: 12px;
}
.footer-contact-list svg {
  width: 16px;
  height: 16px;
  color: var(--accent);
  flex-shrink: 0;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 28px;
  font-size: 13px;
  color: rgba(255,255,255,.42);
}

/* ============ 响应式断点 ============ */
@media (max-width: 1024px) {
  :root {
    --section-space: 80px;
  }
  .container {
    padding: 0 24px;
  }
  .search-box {
    width: 180px;
  }
  .intro-grid {
    gap: 40px;
  }
  .feature-grid {
    gap: 20px;
  }
  .feature-card {
    padding: 30px 24px;
  }
  .step-card {
    padding: 26px 20px;
  }
  .cta-block {
    padding: 56px 36px;
  }
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-space: 64px;
  }
  .nav {
    height: 64px;
  }
  .nav-links {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 20px 40px rgba(0,0,0,.12);
    padding: 16px 24px 20px;
    display: none;
    z-index: 999;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-link {
    padding: 12px 14px;
    font-size: 16px;
  }
  .nav-link.active::after {
    left: 14px;
    right: auto;
    width: 24px;
    bottom: 8px;
  }
  .search-box {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-right .btn {
    display: none;
  }
  .hero {
    min-height: 560px;
  }
  .hero-content {
    padding: 70px 0 160px;
  }
  .hero-strip {
    width: calc(100% - 32px);
    grid-template-columns: repeat(4, 1fr);
  }
  .strip-num {
    font-size: 26px;
  }
  .strip-item {
    padding: 20px 8px;
  }
  .strip-label {
    font-size: 12px;
  }
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .intro-media img {
    height: 320px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .cat-grid {
    grid-template-columns: 1fr;
  }
  .cat-card {
    min-height: 260px;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .steps-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .step-arrow {
    display: none;
  }
  .faq-item details {
    padding: 0 18px;
  }
  .cta-block {
    padding: 48px 24px;
    border-radius: var(--radius-md);
  }
  .cta-actions .btn {
    width: 100%;
    max-width: 320px;
  }
  .footer-main {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  :root {
    --section-space: 52px;
  }
  .container {
    padding: 0 18px;
  }
  .logo {
    font-size: 19px;
  }
  .hero {
    min-height: 500px;
  }
  .hero-content {
    padding: 56px 0 150px;
  }
  .hero-title {
    font-size: 34px;
  }
  .hero-subtitle {
    font-size: 16px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-strip {
    grid-template-columns: repeat(2, 1fr);
    border-radius: 16px 16px 0 0;
  }
  .strip-item {
    padding: 16px 10px;
    border-bottom: 1px solid var(--border);
  }
  .strip-item:nth-child(2n) {
    border-right: none;
  }
  .strip-item:nth-child(-n+2) {
    border-bottom: 1px solid var(--border);
  }
  .strip-num {
    font-size: 24px;
  }
  .section-title {
    font-size: 26px;
  }
  .section-sub {
    font-size: 15px;
  }
  .intro-media img {
    height: 240px;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .cat-card-body {
    padding: 24px;
  }
  .cat-card-body h3 {
    font-size: 22px;
  }
  .news-card {
    padding: 22px;
  }
  .cta-block {
    padding: 40px 18px;
  }
  .cta-title {
    font-size: 26px;
  }
  .footer-main {
    gap: 24px;
  }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a56db;
            --primary-dark: #103a94;
            --primary-light: #3b82f6;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --ink: #111827;
            --ink-soft: #1f2937;
            --text: #374151;
            --text-weak: #6b7280;
            --muted: #9ca3af;
            --bg: #f8fafc;
            --bg-deep: #0f172a;
            --bg-soft: #eff6ff;
            --line: #e5e7eb;
            --white: #ffffff;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 10px rgba(17, 24, 39, .06);
            --shadow: 0 12px 32px rgba(17, 24, 39, .08);
            --shadow-lg: 0 24px 64px rgba(17, 24, 39, .12);
            --space-section: 96px;
            --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: .25s ease;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        textarea {
            font-family: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            width: min(1180px, 92%);
            margin: 0 auto;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            padding: 14px 28px;
            border-radius: 999px;
            transition: all var(--transition);
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--white);
            box-shadow: 0 6px 20px rgba(26, 86, 219, .3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(26, 86, 219, .4);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(26, 86, 219, .25);
        }
        .btn-outline {
            border-color: rgba(255, 255, 255, .55);
            color: var(--white);
            background: transparent;
        }
        .btn-outline:hover {
            border-color: var(--white);
            background: rgba(255, 255, 255, .1);
            transform: translateY(-2px);
        }
        .btn-light {
            background: var(--white);
            color: var(--primary);
            box-shadow: 0 6px 20px rgba(0, 0, 0, .08);
        }
        .btn-light:hover {
            background: #f0f4ff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, .12);
        }
        .btn:focus-visible {
            outline: 3px solid rgba(59, 130, 246, .55);
            outline-offset: 3px;
        }

        /* ===== Header 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(229, 231, 235, .7);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(17, 24, 39, .08);
        }
        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--ink);
            flex-shrink: 0;
        }
        .logo-dot {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            box-shadow: 0 4px 14px rgba(26, 86, 219, .35);
            position: relative;
        }
        .logo-dot::after {
            content: "";
            position: absolute;
            inset: 9px;
            border-radius: 4px;
            background: var(--white);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            background: #f3f4f6;
            padding: 5px;
            border-radius: 999px;
        }
        .nav-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            padding: 9px 22px;
            border-radius: 999px;
            transition: all var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(255, 255, 255, .8);
        }
        .nav-link.active {
            background: var(--white);
            color: var(--primary);
            box-shadow: 0 2px 10px rgba(17, 24, 39, .07);
            font-weight: 700;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #f3f4f6;
            border: 1px solid transparent;
            border-radius: 999px;
            padding: 9px 16px;
            width: 220px;
            transition: all var(--transition);
        }
        .search-box:hover,
        .search-box:focus-within {
            border-color: var(--primary-light);
            background: var(--white);
            box-shadow: 0 0 0 4px rgba(59, 130, 246, .08);
        }
        .search-box svg {
            width: 17px;
            height: 17px;
            color: var(--muted);
            flex-shrink: 0;
        }
        .search-box input {
            border: none;
            background: transparent;
            font-size: 13px;
            color: var(--ink);
            width: 100%;
        }
        .search-box input::placeholder {
            color: var(--muted);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: 8px;
        }
        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: var(--ink);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== 分类 Banner ===== */
        .page-banner {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            color: var(--white);
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(8, 15, 35, .92) 30%, rgba(8, 15, 35, .55) 70%, rgba(8, 15, 35, .25));
            z-index: 1;
        }
        .page-banner::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 78% 20%, rgba(245, 158, 11, .18), transparent 55%);
            z-index: 1;
        }
        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            padding: 80px 0;
        }
        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            backdrop-filter: blur(8px);
            color: var(--accent-light);
            font-size: 13px;
            font-weight: 600;
            padding: 7px 18px;
            border-radius: 999px;
            letter-spacing: .5px;
            margin-bottom: 24px;
        }
        .banner-badge::before {
            content: "";
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 0 4px rgba(245, 158, 11, .3);
        }
        .banner-title {
            font-size: clamp(38px, 6vw, 64px);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }
        .banner-title span {
            background: linear-gradient(to right, var(--accent-light), #fde68a);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .banner-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 36px;
            max-width: 600px;
        }
        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 44px;
            border-top: 1px solid rgba(255, 255, 255, .16);
            padding-top: 28px;
        }
        .banner-meta-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .banner-meta-item svg {
            width: 22px;
            height: 22px;
            color: var(--accent);
            flex-shrink: 0;
        }
        .banner-meta-item span {
            font-size: 14px;
            color: rgba(255, 255, 255, .8);
        }
        .banner-meta-item strong {
            display: block;
            font-size: 18px;
            color: var(--white);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--space-section) 0;
        }
        .section-alt {
            background: var(--white);
        }
        .section-deep {
            background: var(--bg-deep);
            color: var(--white);
        }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(26, 86, 219, .08);
            padding: 6px 18px;
            border-radius: 999px;
            margin-bottom: 16px;
        }
        .section-deep .section-eyebrow {
            color: var(--accent-light);
            background: rgba(245, 158, 11, .12);
        }
        .section-title {
            font-size: clamp(30px, 4vw, 40px);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -.5px;
            color: var(--ink);
            margin-bottom: 16px;
        }
        .section-deep .section-title {
            color: var(--white);
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-weak);
            line-height: 1.8;
        }
        .section-deep .section-desc {
            color: rgba(255, 255, 255, .7);
        }

        /* ===== 介绍板块 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 64px;
            align-items: center;
        }
        .intro-text h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.4;
            margin-bottom: 20px;
        }
        .intro-text p {
            font-size: 16px;
            color: var(--text-weak);
            line-height: 1.9;
            margin-bottom: 16px;
        }
        .intro-list {
            margin-top: 32px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
        }
        .intro-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }
        .intro-list .check-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(26, 86, 219, .1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .intro-list .check-icon svg {
            width: 14px;
            height: 14px;
        }
        .intro-list span {
            font-size: 14px;
            font-weight: 600;
            color: var(--ink-soft);
            line-height: 1.5;
        }
        .intro-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .intro-visual img {
            width: 100%;
            height: 460px;
            object-fit: cover;
            transform: scale(1.01);
            transition: transform .6s ease;
        }
        .intro-visual:hover img {
            transform: scale(1.05);
        }
        .intro-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, .35), transparent 50%);
        }
        .intro-visual .visual-tag {
            position: absolute;
            z-index: 2;
            left: 18px;
            bottom: 18px;
            background: rgba(255, 255, 255, .16);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, .25);
            color: var(--white);
            font-size: 13px;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 999px;
        }

        /* ===== 服务卡片 ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 26px;
        }
        .service-card {
            background: var(--white);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(26, 86, 219, .25);
        }
        .service-card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }
        .service-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .service-card:hover .service-card-img img {
            transform: scale(1.06);
        }
        .service-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(17, 24, 39, .5), transparent 60%);
        }
        .service-card-icon {
            position: absolute;
            z-index: 2;
            left: 18px;
            bottom: 18px;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--white);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 24px rgba(0, 0, 0, .15);
        }
        .service-card-icon svg {
            width: 22px;
            height: 22px;
        }
        .service-card-body {
            padding: 26px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
        }
        .service-card-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 18px;
        }
        .service-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(26, 86, 219, .08);
            padding: 4px 12px;
            border-radius: 999px;
            transition: all var(--transition);
        }
        .tag:hover {
            background: rgba(26, 86, 219, .14);
        }

        /* ===== 流程板块 ===== */
        .process-section {
            background: var(--bg-deep);
            color: var(--white);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 28px;
            counter-reset: step;
        }
        .process-step {
            position: relative;
            padding: 32px 22px;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .09);
            border-radius: var(--radius-lg);
            transition: all var(--transition);
        }
        .process-step:hover {
            background: rgba(255, 255, 255, .09);
            border-color: rgba(245, 158, 11, .4);
            transform: translateY(-4px);
        }
        .step-number {
            font-size: 40px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1.5px rgba(245, 158, 11, .7);
            line-height: 1;
            margin-bottom: 20px;
            display: block;
        }
        .process-step h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 14px;
            color: rgba(255, 255, 255, .65);
            line-height: 1.7;
        }
        .process-step::after {
            content: "";
            position: absolute;
            top: 50%;
            right: -20px;
            width: 12px;
            height: 12px;
            border-top: 2px solid rgba(245, 158, 11, .4);
            border-right: 2px solid rgba(245, 158, 11, .4);
            transform: translateY(-50%) rotate(45deg);
            z-index: 2;
        }
        .process-step:last-child::after {
            display: none;
        }

        /* ===== 资讯卡片 ===== */
        .insight-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .article-card {
            background: var(--white);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(26, 86, 219, .2);
        }
        .article-card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
        }
        .article-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .article-card:hover .article-card-img img {
            transform: scale(1.05);
        }
        .article-card-img .tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(6px);
            color: var(--primary);
            font-weight: 700;
        }
        .article-card-body {
            padding: 26px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 12px;
        }
        .article-meta .dot {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: var(--muted);
        }
        .article-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--ink);
            margin-bottom: 12px;
        }
        .article-title a {
            transition: color var(--transition);
        }
        .article-title a:hover {
            color: var(--primary);
        }
        .article-desc {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 18px;
        }
        .article-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: gap var(--transition);
        }
        .article-link:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--white);
        }
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
            display: grid;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 0;
            transition: all var(--transition);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: rgba(26, 86, 219, .25);
            box-shadow: var(--shadow-sm);
        }
        .faq-item[open] {
            background: var(--bg-soft);
            border-color: rgba(26, 86, 219, .3);
        }
        .faq-summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 28px;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            cursor: pointer;
            list-style: none;
        }
        .faq-summary::-webkit-details-marker {
            display: none;
        }
        .faq-summary::after {
            content: "+";
            font-size: 24px;
            font-weight: 300;
            color: var(--primary);
            flex-shrink: 0;
            transition: transform var(--transition);
            line-height: 1;
        }
        .faq-item[open] .faq-summary::after {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 28px 22px;
            font-size: 15px;
            color: var(--text);
            line-height: 1.85;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            position: relative;
            background-size: cover;
            background-position: center;
        }
        .cta-box {
            position: relative;
            z-index: 2;
            background: rgba(255, 255, 255, .08);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: var(--radius-lg);
            padding: 64px 56px;
            text-align: center;
            box-shadow: var(--shadow-lg);
        }
        .cta-box .section-eyebrow {
            background: rgba(245, 158, 11, .18);
            color: var(--accent-light);
        }
        .cta-box .section-title {
            color: var(--white);
        }
        .cta-box .section-desc {
            color: rgba(255, 255, 255, .8);
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
            margin-top: 32px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0b1220;
            color: rgba(255, 255, 255, .7);
            padding-top: 68px;
            font-size: 14px;
        }
        .site-footer .logo {
            color: var(--white);
        }
        .footer-main {
            display: grid;
            grid-template-columns: 1.4fr .7fr .9fr;
            gap: 56px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand p {
            margin-top: 18px;
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .55);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 22px;
        }
        .footer-col ul {
            display: grid;
            gap: 12px;
        }
        .footer-col ul a {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            transition: all var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .footer-contact-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, .65);
        }
        .footer-contact-list svg {
            width: 18px;
            height: 18px;
            color: var(--accent);
            flex-shrink: 0;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
            padding: 28px 0 32px;
            color: rgba(255, 255, 255, .4);
            font-size: 13px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --space-section: 72px;
            }
            .search-box {
                width: 170px;
            }
            .nav-link {
                padding: 9px 16px;
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(3, 1fr);
                gap: 18px;
            }
            .process-step:nth-child(3)::after {
                display: none;
            }
            .process-step:nth-child(5) {
                grid-column: 2 / 3;
            }
            .process-step:nth-child(5)::after {
                display: none;
            }
            .insight-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-main {
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --space-section: 60px;
            }
            .nav {
                height: 64px;
            }
            .nav-links {
                position: fixed;
                left: 0;
                right: 0;
                top: 64px;
                background: var(--white);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                border-radius: 0 0 16px 16px;
                box-shadow: var(--shadow-lg);
                gap: 6px;
                display: none;
                z-index: 99;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link {
                text-align: center;
                padding: 14px;
                border-radius: 12px;
            }
            .nav-right {
                gap: 10px;
            }
            .search-box {
                width: 42px;
                padding: 9px;
                justify-content: center;
            }
            .search-box input {
                width: 0;
                opacity: 0;
                position: absolute;
            }
            .search-box:hover input {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-right .btn-primary {
                display: none;
            }
            .page-banner {
                min-height: 440px;
            }
            .banner-content {
                padding: 60px 0;
            }
            .banner-title {
                font-size: 38px;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .intro-visual img {
                height: 320px;
            }
            .intro-list {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
            }
            .process-step:nth-child(2n)::after {
                display: none;
            }
            .process-step:nth-child(5) {
                grid-column: auto;
            }
            .insight-grid {
                grid-template-columns: 1fr;
            }
            .footer-main {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-box {
                padding: 44px 24px;
            }
        }
        @media (max-width: 520px) {
            .services-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .process-step::after {
                display: none;
            }
            .banner-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn {
                justify-content: center;
            }
            .banner-meta {
                flex-direction: column;
                gap: 18px;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .footer-bottom {
                font-size: 12px;
            }
        }

        /* ===== 焦点可见性 ===== */
        a:focus-visible,
        input:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(59, 130, 246, .55);
            outline-offset: 2px;
        }

/* roulang page: article */
:root {
  --primary: #0b1b33;
  --primary-soft: #132c51;
  --accent: #c9a35f;
  --accent-hover: #b69049;
  --accent-soft: #f6efe2;
  --bg-white: #ffffff;
  --bg-light: #f4f6fb;
  --bg-dark: #0a1526;
  --text-dark: #1b2437;
  --text-muted: #64748b;
  --text-white: #ffffff;
  --border: #e5e9f2;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(11, 27, 51, .06);
  --shadow-md: 0 12px 34px rgba(11, 27, 51, .1);
  --shadow-lg: 0 28px 68px rgba(11, 27, 51, .18);
  --nav-h: 76px;
  --section-space: 96px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--bg-white); color: var(--text-dark); line-height: 1.75; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, textarea { font-family: inherit; }
ul, ol { list-style: none; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid rgba(201, 163, 95, .5); outline-offset: 2px; }

.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, .86); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); }
.nav { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); gap: 20px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; letter-spacing: .5px; color: var(--primary); transition: opacity .2s; }
.logo:hover { opacity: .85; }
.logo-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(201, 163, 95, .18); flex-shrink: 0; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link { display: inline-flex; align-items: center; padding: 9px 16px; border-radius: 999px; font-weight: 500; font-size: 14px; color: var(--text-muted); transition: all .25s; white-space: nowrap; }
.nav-link:hover { color: var(--text-dark); background: var(--bg-light); }
.nav-link.active { color: var(--primary); background: var(--accent-soft); font-weight: 700; }
.nav-right { display: flex; align-items: center; gap: 14px; }
.search-box { display: flex; align-items: center; gap: 8px; width: 220px; height: 42px; padding: 0 16px; border: 1px solid var(--border); border-radius: 999px; background: var(--bg-light); transition: border-color .25s, box-shadow .25s; }
.search-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(201, 163, 95, .15); }
.search-box svg { width: 16px; height: 16px; color: var(--text-muted); flex-shrink: 0; }
.search-box input { width: 100%; height: 100%; border: none; outline: none; background: transparent; font-size: 14px; color: var(--text-dark); }
.search-box input::placeholder { color: var(--text-muted); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 999px; font-weight: 700; font-size: 14px; line-height: 1; padding: 12px 24px; transition: all .25s; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--primary-soft); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-primary:active { transform: translateY(0); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 6px 20px rgba(201, 163, 95, .35); }
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(201, 163, 95, .4); }
.btn-accent:active { transform: translateY(0); }
.btn-outline { border: 1.5px solid rgba(255, 255, 255, .6); color: #fff; background: transparent; }
.btn-outline:hover { background: rgba(255, 255, 255, .12); border-color: #fff; transform: translateY(-2px); }
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; padding: 10px; border-radius: var(--radius-sm); transition: background .25s; }
.nav-toggle:hover { background: var(--bg-light); }
.nav-toggle span { display: block; height: 2px; width: 100%; background: var(--text-dark); border-radius: 2px; transition: all .3s; }

.article-hero { position: relative; padding: 110px 0 80px; background: var(--bg-dark); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .5; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(11, 27, 51, .75) 0%, rgba(11, 27, 51, .94) 100%); }
.article-hero .container { position: relative; z-index: 2; max-width: 900px; text-align: center; }
.breadcrumb { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, .6); margin-bottom: 22px; }
.breadcrumb a { color: rgba(255, 255, 255, .7); transition: color .2s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: rgba(255, 255, 255, .35); }
.breadcrumb .current { color: rgba(255, 255, 255, .85); max-width: 420px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.article-hero h1 { color: #fff; font-size: 42px; line-height: 1.25; font-weight: 800; letter-spacing: .5px; margin-bottom: 18px; }
.hero-meta { display: flex; align-items: center; justify-content: center; gap: 14px; font-size: 14px; color: rgba(255, 255, 255, .75); }
.badge { display: inline-flex; align-items: center; padding: 6px 16px; border-radius: 999px; font-size: 13px; font-weight: 700; letter-spacing: .3px; }
.badge-light { background: rgba(255, 255, 255, .14); color: #fff; border: 1px solid rgba(255, 255, 255, .22); }

.article-section { padding: 72px 0; background: var(--bg-light); }
.article-layout { max-width: 880px; margin: 0 auto; }
.article-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: 48px; }
.article-body { font-size: 16px; line-height: 1.9; color: var(--text-dark); }
.article-body p { margin-bottom: 20px; }
.article-body h1, .article-body h2, .article-body h3, .article-body h4 { color: var(--primary); margin: 34px 0 14px; line-height: 1.35; }
.article-body h2 { font-size: 26px; }
.article-body h3 { font-size: 21px; }
.article-body ul, .article-body ol { margin-bottom: 22px; padding-left: 24px; }
.article-body ul li { list-style: disc; margin-bottom: 8px; }
.article-body ol li { list-style: decimal; margin-bottom: 8px; }
.article-body a { color: var(--accent-hover); border-bottom: 1px solid rgba(201, 163, 95, .4); transition: border-color .2s; }
.article-body a:hover { border-color: var(--accent); }
.article-body blockquote { margin: 24px 0; padding: 18px 22px; background: var(--accent-soft); border-left: 4px solid var(--accent); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-dark); }
.article-body blockquote p { margin-bottom: 0; }
.article-body img { border-radius: var(--radius-md); margin: 24px 0; box-shadow: var(--shadow-sm); }
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15px; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; }
.article-body th { background: var(--bg-light); font-weight: 700; }
.article-body code { background: var(--bg-light); border: 1px solid var(--border); border-radius: 4px; padding: 2px 8px; font-size: 14px; }
.article-footer-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 34px; padding-top: 24px; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 14px; }
.tag { display: inline-flex; align-items: center; padding: 5px 12px; border-radius: 999px; background: var(--bg-light); border: 1px solid var(--border); font-size: 13px; color: var(--text-muted); transition: all .2s; }
.tag:hover { border-color: var(--accent); color: var(--primary); background: var(--accent-soft); }

.not-found { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: 64px 40px; text-align: center; }
.not-found h2 { font-size: 30px; color: var(--primary); margin-bottom: 14px; }
.not-found p { color: var(--text-muted); margin-bottom: 28px; }

.section { padding: var(--section-space) 0; }
.section-head { margin-bottom: 44px; max-width: 700px; }
.section-label { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; color: var(--accent-hover); margin-bottom: 10px; }
.section-label::before { content: ""; width: 18px; height: 2px; background: var(--accent); border-radius: 2px; }
.section-head h2 { font-size: 34px; line-height: 1.25; color: var(--primary); font-weight: 800; margin-bottom: 12px; }
.section-head p { color: var(--text-muted); font-size: 16px; line-height: 1.8; }
.section-head.light { color: #fff; }
.section-head.light .section-label { color: var(--accent); }
.section-head.light h2 { color: #fff; }
.section-head.light p { color: rgba(255, 255, 255, .65); }

.services-section { background: var(--bg-white); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.card-service { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: all .3s; }
.card-service:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.card-service img { width: 100%; height: 230px; object-fit: cover; transition: transform .6s ease; }
.card-service:hover img { transform: scale(1.03); }
.card-body { padding: 28px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { font-size: 22px; font-weight: 700; color: var(--primary); margin-bottom: 12px; }
.card-body p { color: var(--text-muted); font-size: 15px; line-height: 1.8; flex: 1; }
.card-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px; font-weight: 700; font-size: 14px; color: var(--accent-hover); transition: gap .25s; }
.card-link::after { content: "→"; transition: transform .25s; }
.card-service:hover .card-link { gap: 10px; }

.stats-section { position: relative; padding: var(--section-space) 0; background: var(--bg-dark); overflow: hidden; }
.stats-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .25; }
.stats-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10, 21, 38, .88) 0%, rgba(11, 27, 51, .92) 100%); }
.stats-section .container { position: relative; z-index: 2; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; margin-top: 20px; }
.stat-item { text-align: center; padding: 30px 16px; background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .1); border-radius: var(--radius-lg); backdrop-filter: blur(6px); transition: all .3s; }
.stat-item:hover { background: rgba(255, 255, 255, .1); transform: translateY(-4px); border-color: rgba(201, 163, 95, .4); }
.stat-num { font-size: 48px; font-weight: 800; color: var(--accent); line-height: 1.1; margin-bottom: 10px; }
.stat-label { color: rgba(255, 255, 255, .8); font-size: 14px; letter-spacing: 1px; }

.topics-section { background: var(--bg-light); }
.topic-tags { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 40px; }
.topic-tag { display: inline-flex; align-items: center; padding: 8px 18px; border-radius: 999px; background: #fff; border: 1px solid var(--border); font-size: 14px; font-weight: 600; color: var(--text-dark); box-shadow: var(--shadow-sm); transition: all .25s; }
.topic-tag:hover { border-color: var(--accent); color: var(--accent-hover); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.visual-scroll { display: flex; gap: 20px; overflow-x: auto; padding: 4px 4px 16px; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: thin; scrollbar-color: var(--accent) var(--border); }
.visual-scroll::-webkit-scrollbar { height: 6px; }
.visual-scroll::-webkit-scrollbar-track { background: var(--border); border-radius: 6px; }
.visual-scroll::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 6px; }
.visual-card { position: relative; flex: 0 0 320px; height: 210px; border-radius: var(--radius-lg); overflow: hidden; scroll-snap-align: start; box-shadow: var(--shadow-sm); }
.visual-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.visual-card:hover img { transform: scale(1.06); }
.visual-overlay { position: absolute; inset: 0; display: flex; align-items: flex-end; padding: 22px; background: linear-gradient(180deg, transparent 40%, rgba(11, 27, 51, .82) 100%); color: #fff; font-size: 18px; font-weight: 700; }

.faq-section { background: var(--bg-white); }
.faq-list { max-width: 880px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: var(--bg-light); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 24px 28px; transition: all .25s; }
.faq-item:hover { border-color: var(--accent); box-shadow: var(--shadow-md); background: #fff; }
.faq-q { font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.faq-a { color: var(--text-muted); font-size: 15px; line-height: 1.8; }

.cta-section { position: relative; padding: 100px 0; background: var(--bg-dark); overflow: hidden; }
.cta-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .3; }
.cta-overlay { position: absolute; inset: 0; background: radial-gradient(ellipse at center, rgba(201, 163, 95, .18) 0%, rgba(11, 27, 51, .88) 70%); }
.cta-section .container { position: relative; z-index: 2; }
.cta-content { text-align: center; color: #fff; max-width: 720px; margin: 0 auto; }
.cta-content h2 { font-size: 36px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
.cta-content p { color: rgba(255, 255, 255, .75); font-size: 16px; margin-bottom: 32px; }
.cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; margin-bottom: 26px; }
.cta-note { font-size: 13px; color: rgba(255, 255, 255, .45); letter-spacing: .5px; }

.site-footer { background: var(--bg-dark); color: rgba(255, 255, 255, .75); }
.footer-main { display: grid; grid-template-columns: 2fr 1fr 1.2fr; gap: 44px; padding: 72px 0 48px; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand p { max-width: 360px; font-size: 14px; line-height: 1.8; color: rgba(255, 255, 255, .55); }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 20px; }
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col a { color: rgba(255, 255, 255, .65); font-size: 14px; transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.footer-contact-list li { display: flex; align-items: center; gap: 10px; color: rgba(255, 255, 255, .65); font-size: 14px; }
.footer-contact-list svg { width: 16px; height: 16px; stroke: var(--accent); flex-shrink: 0; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding: 20px 0; border-top: 1px solid rgba(255, 255, 255, .1); font-size: 13px; color: rgba(255, 255, 255, .4); }

@media (max-width: 1024px) {
  :root { --section-space: 80px; }
  .nav-links { gap: 2px; }
  .nav-link { padding: 8px 12px; font-size: 13px; }
  .search-box { width: 180px; }
  .article-hero h1 { font-size: 36px; }
  .section-head h2 { font-size: 30px; }
  .stats-grid { gap: 18px; }
  .stat-num { font-size: 40px; }
  .footer-main { gap: 32px; }
}

@media (max-width: 900px) {
  .nav-links { display: none; position: absolute; top: var(--nav-h); left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 4px; background: #fff; padding: 16px 24px 20px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-lg); border-radius: 0 0 var(--radius-md) var(--radius-md); }
  .nav-links.open { display: flex; }
  .nav-link { padding: 12px 16px; font-size: 15px; border-radius: var(--radius-sm); }
  .search-box { display: none; }
  .nav-toggle { display: flex; }
  .article-hero { padding: 90px 0 60px; }
  .article-hero h1 { font-size: 32px; }
  .grid-2 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .cta-content h2 { font-size: 30px; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  :root { --section-space: 64px; }
  .logo { font-size: 18px; }
  .btn { padding: 11px 20px; font-size: 13px; }
  .article-hero { padding: 70px 0 48px; }
  .article-hero h1 { font-size: 27px; line-height: 1.35; }
  .breadcrumb { font-size: 13px; }
  .article-section { padding: 48px 0; }
  .article-card { padding: 28px 22px; border-radius: var(--radius-md); }
  .article-body { font-size: 15px; line-height: 1.85; }
  .section-head h2 { font-size: 26px; }
  .section-head p { font-size: 15px; }
  .visual-card { flex: 0 0 86%; height: 190px; }
  .footer-main { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .cta-content h2 { font-size: 25px; }
}

/* roulang page: category2 */
:root {
  --primary: #12263f;
  --primary-light: #1d3a5f;
  --accent: #d9a441;
  --accent-light: #f0c76a;
  --dark: #0b1a2b;
  --bg: #f6f8fb;
  --bg-white: #ffffff;
  --text: #1a2733;
  --muted: #64748b;
  --border: #e3e9f0;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 4px 14px rgba(10, 20, 40, .08);
  --shadow-md: 0 12px 32px rgba(10, 20, 40, .14);
  --shadow-lg: 0 24px 60px rgba(10, 20, 40, .18);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input { font: inherit; border: none; outline: none; }
.container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.section-alt { background: var(--bg-white); }
.section-dark { background: var(--dark); color: #fff; }
.section-head { margin-bottom: 56px; max-width: 720px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-tag { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .08em; color: var(--accent); background: rgba(217, 164, 65, .12); padding: 6px 14px; border-radius: 999px; margin-bottom: 16px; text-transform: uppercase; }
.section-title { font-size: 38px; line-height: 1.2; font-weight: 800; letter-spacing: -1px; color: var(--primary); }
.section-title.light { color: #fff; }
.section-desc { color: var(--muted); font-size: 17px; margin-top: 16px; }
.section-desc.light { color: rgba(255,255,255,.72); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; font-weight: 600; border-radius: 999px; padding: 12px 26px; transition: all .25s ease; font-size: 14px; cursor: pointer; border: none; line-height: 1.4; }
.btn svg, .btn img { width: 16px; height: 16px; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 24px rgba(18, 38, 63, .22); }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 14px 34px rgba(18, 38, 63, .28); }
.btn-primary:active { transform: translateY(0); }
.btn-gold { background: var(--accent); color: var(--dark); }
.btn-gold:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(217, 164, 65, .35); }
.btn-light { background: #fff; color: var(--primary); }
.btn-light:hover { background: #f0f4fa; transform: translateY(-2px); box-shadow: 0 12px 28px rgba(255,255,255,.2); }
.btn-outline { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.4); }
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,.1); transform: translateY(-2px); }
.btn:focus-visible, .nav-toggle:focus-visible, .nav-link:focus-visible, a:focus-visible { outline: 3px solid rgba(217,164,65,.5); outline-offset: 2px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.86); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 74px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--primary); letter-spacing: -.02em; white-space: nowrap; }
.logo-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(217,164,65,.2); flex-shrink: 0; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link { padding: 8px 18px; border-radius: 999px; font-weight: 500; font-size: 15px; color: var(--muted); transition: all .2s ease; white-space: nowrap; }
.nav-link:hover { color: var(--primary); background: rgba(18,38,63,.05); }
.nav-link.active { color: var(--primary); background: rgba(18,38,63,.08); font-weight: 600; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.search-box { display: flex; align-items: center; gap: 8px; background: var(--bg); border: 1px solid var(--border); border-radius: 999px; padding: 8px 16px; width: 240px; transition: border-color .2s, box-shadow .2s; }
.search-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(217,164,65,.15); }
.search-box svg { width: 16px; height: 16px; color: var(--muted); flex-shrink: 0; }
.search-box input { background: transparent; border: none; font-size: 14px; width: 100%; color: var(--text); }
.search-box input::placeholder { color: #94a3b8; }
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; background: transparent; width: 44px; height: 44px; padding: 10px; border-radius: 12px; cursor: pointer; }
.nav-toggle span { display: block; width: 100%; height: 2px; background: var(--primary); border-radius: 2px; transition: all .3s ease; }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Page Hero */
.page-hero { position: relative; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; overflow: hidden; }
.page-hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(8,18,32,.68) 0%, rgba(8,18,32,.38) 45%, rgba(8,18,32,.78) 100%); }
.page-hero::after { content: ""; position: absolute; inset: 0; background: radial-gradient(ellipse at 75% 20%, rgba(217,164,65,.18), transparent 60%); pointer-events: none; }
.hero-inner { position: relative; z-index: 2; padding: 120px 0 64px; color: #fff; width: 100%; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; letter-spacing: .12em; color: var(--accent-light); text-transform: uppercase; margin-bottom: 20px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16); padding: 6px 14px; border-radius: 999px; backdrop-filter: blur(8px); }
.hero-title { font-size: 56px; line-height: 1.14; font-weight: 800; letter-spacing: -2px; max-width: 680px; margin-bottom: 20px; }
.hero-copy { font-size: 18px; color: rgba(255,255,255,.86); max-width: 580px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 48px; }
.play-btn { background: rgba(255,255,255,.14); backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,.28); }
.play-btn:hover { background: rgba(255,255,255,.24); border-color: #fff; transform: translateY(-2px); }
.play-btn svg { width: 18px; height: 18px; }
.hero-info-strip { display: flex; flex-wrap: wrap; gap: 16px 40px; border-top: 1px solid rgba(255,255,255,.22); padding-top: 24px; }
.info-item { display: flex; flex-direction: column; gap: 2px; }
.info-item strong { font-size: 24px; font-weight: 800; color: #fff; line-height: 1.2; }
.info-item span { font-size: 14px; color: rgba(255,255,255,.72); }

/* Breadcrumb */
.breadcrumb-wrap { background: transparent; }
.breadcrumb-list { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 20px 0; font-size: 14px; color: var(--muted); }
.breadcrumb-list li { display: flex; align-items: center; gap: 8px; }
.breadcrumb-list li + li::before { content: "/"; color: #b6c2d0; }
.breadcrumb-list a:hover { color: var(--primary); }

/* Stats Cards */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 28px; transition: all .3s ease; position: relative; overflow: hidden; }
.stat-card::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 3px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .35s ease; }
.stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: rgba(217,164,65,.4); }
.stat-card:hover::after, .stat-card:focus-within::after { transform: scaleX(1); }
.stat-icon { width: 44px; height: 44px; border-radius: 12px; background: rgba(18,38,63,.08); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; color: var(--primary); }
.stat-icon svg { width: 20px; height: 20px; }
.stat-number { font-size: 40px; font-weight: 800; letter-spacing: -2px; color: var(--primary); line-height: 1.1; margin-bottom: 8px; }
.stat-label { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.stat-desc { font-size: 14px; color: var(--muted); line-height: 1.6; }

/* Post Cards */
.posts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.post-card { background: var(--bg-white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); transition: all .3s ease; display: flex; flex-direction: column; }
.post-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.post-media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; }
.post-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.post-card:hover .post-media img { transform: scale(1.05); }
.post-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, rgba(8,18,32,.35)); }
.post-tag { position: absolute; top: 14px; left: 14px; background: rgba(255,255,255,.92); color: var(--primary); font-size: 12px; font-weight: 600; padding: 4px 12px; border-radius: 999px; z-index: 2; backdrop-filter: blur(8px); }
.post-body { padding: 24px 24px 28px; display: flex; flex-direction: column; flex: 1; }
.post-title { font-size: 20px; font-weight: 700; color: var(--primary); line-height: 1.4; margin-bottom: 10px; transition: color .2s; }
.post-card:hover .post-title { color: var(--accent); }
.post-excerpt { font-size: 14px; color: var(--muted); line-height: 1.7; margin-bottom: 18px; flex: 1; }
.post-meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: #94a3b8; }
.post-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); }
.post-link svg { width: 14px; height: 14px; transition: transform .2s; }
.post-link:hover { color: var(--accent); }
.post-link:hover svg { transform: translateX(4px); }

/* Feature Split */
.feature-split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.feature-text .section-tag { margin-bottom: 14px; }
.feature-title { font-size: 34px; font-weight: 800; color: var(--primary); line-height: 1.25; letter-spacing: -1px; margin-bottom: 18px; }
.feature-desc { color: var(--muted); font-size: 16px; margin-bottom: 28px; }
.feature-list { list-style: none; display: grid; gap: 14px; margin-bottom: 32px; }
.feature-list li { display: flex; align-items: flex-start; gap: 12px; background: var(--bg); border-radius: 14px; padding: 16px 18px; border: 1px solid var(--border); }
.feature-list-icon { width: 28px; height: 28px; border-radius: 8px; background: rgba(217,164,65,.15); color: var(--accent); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.feature-list-icon svg { width: 14px; height: 14px; }
.feature-list strong { display: block; font-size: 15px; color: var(--text); margin-bottom: 2px; }
.feature-list span { font-size: 13px; color: var(--muted); }
.feature-visual { position: relative; }
.feature-visual img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.feature-visual::before { content: ""; position: absolute; inset: 20px -20px -20px 20px; background: rgba(217,164,65,.16); border-radius: var(--radius-lg); z-index: -1; }
.data-float { position: absolute; bottom: 24px; right: -18px; background: var(--bg-white); border-radius: 16px; box-shadow: var(--shadow-lg); padding: 18px 22px; display: flex; align-items: center; gap: 12px; border: 1px solid var(--border); }
.data-float strong { font-size: 28px; font-weight: 800; color: var(--primary); line-height: 1; }
.data-float span { font-size: 13px; color: var(--muted); }

/* Steps */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-card { background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); padding: 32px 26px; transition: all .3s ease; }
.step-card:hover { background: rgba(255,255,255,.08); border-color: rgba(217,164,65,.4); transform: translateY(-4px); }
.step-num { font-size: 42px; font-weight: 800; color: var(--accent); line-height: 1; margin-bottom: 16px; font-family: inherit; }
.step-title { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.step-desc { font-size: 14px; color: rgba(255,255,255,.7); line-height: 1.7; }

/* Trends Slider */
.trends-scroll { display: flex; gap: 20px; overflow-x: auto; padding-bottom: 20px; scroll-snap-type: x mandatory; scrollbar-width: thin; scrollbar-color: var(--border) transparent; }
.trends-scroll::-webkit-scrollbar { height: 6px; }
.trends-scroll::-webkit-scrollbar-track { background: transparent; }
.trends-scroll::-webkit-scrollbar-thumb { background: #d5dde8; border-radius: 999px; }
.trend-card { flex: 0 0 300px; scroll-snap-align: start; background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: transform .3s, box-shadow .3s; }
.trend-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.trend-media { height: 150px; overflow: hidden; }
.trend-media img { width: 100%; height: 100%; object-fit: cover; }
.trend-body { padding: 20px; }
.trend-body h4 { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.trend-body p { font-size: 13px; color: var(--muted); line-height: 1.65; }
.trend-index { display: inline-block; font-size: 11px; font-weight: 700; color: var(--accent); background: rgba(217,164,65,.12); padding: 3px 10px; border-radius: 999px; margin-bottom: 10px; }

/* Quote */
.quote-section { background: var(--dark); color: #fff; position: relative; overflow: hidden; }
.quote-section::before { content: ""; position: absolute; top: -60px; right: -60px; width: 300px; height: 300px; background: radial-gradient(circle, rgba(217,164,65,.22), transparent 60%); }
.quote-block { max-width: 860px; margin: 0 auto; text-align: center; position: relative; }
.quote-mark { font-size: 80px; color: var(--accent); line-height: 0; display: block; margin-bottom: 20px; font-family: Georgia, serif; }
.quote-text { font-size: 26px; font-weight: 600; line-height: 1.6; letter-spacing: -.5px; margin-bottom: 28px; }
.quote-author { display: flex; align-items: center; justify-content: center; gap: 14px; font-size: 15px; color: rgba(255,255,255,.72); }
.quote-author .avatar { width: 44px; height: 44px; border-radius: 50%; background: rgba(217,164,65,.2); border: 1px solid rgba(217,164,65,.4); display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--accent); }

/* FAQ */
.faq-list { max-width: 860px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: all .3s ease; }
.faq-item:hover { border-color: rgba(217,164,65,.4); }
.faq-item summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 24px; font-weight: 600; font-size: 16px; color: var(--primary); transition: background .2s; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 24px; font-weight: 400; color: var(--accent); transition: transform .3s ease; flex-shrink: 0; line-height: 1; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item[open] summary { background: rgba(217,164,65,.05); }
.faq-answer { padding: 0 24px 22px; color: var(--muted); font-size: 15px; line-height: 1.75; }

/* CTA */
.cta-section { position: relative; overflow: hidden; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); color: #fff; }
.cta-section::before { content: ""; position: absolute; top: -80px; left: -80px; width: 320px; height: 320px; background: radial-gradient(circle, rgba(217,164,65,.28), transparent 60%); }
.cta-section::after { content: ""; position: absolute; bottom: -50px; right: -50px; width: 260px; height: 260px; background: radial-gradient(circle, rgba(255,255,255,.1), transparent 60%); }
.cta-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; }
.cta-title { font-size: 32px; font-weight: 800; letter-spacing: -1px; margin-bottom: 12px; }
.cta-desc { color: rgba(255,255,255,.78); max-width: 560px; margin-bottom: 24px; }
.cta-contacts { display: flex; flex-wrap: wrap; gap: 20px; }
.cta-contact { display: flex; align-items: center; gap: 10px; font-size: 15px; color: rgba(255,255,255,.85); }
.cta-contact svg { width: 18px; height: 18px; color: var(--accent); }
.cta-actions { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }

/* Footer */
.site-footer { background: var(--dark); color: rgba(255,255,255,.72); padding: 64px 0 32px; }
.footer-main { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.1); margin-bottom: 24px; }
.footer-brand p { font-size: 14px; line-height: 1.7; margin-top: 16px; max-width: 340px; }
.footer-brand .logo { color: #fff; }
.footer-col h4 { font-size: 15px; color: #fff; margin-bottom: 16px; font-weight: 700; }
.footer-col ul { list-style: none; display: grid; gap: 10px; }
.footer-col a { font-size: 14px; color: rgba(255,255,255,.62); transition: color .2s ease, padding-left .2s ease; }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact-list li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255,255,255,.62); }
.footer-contact-list svg { width: 16px; height: 16px; color: var(--accent); flex-shrink: 0; }
.footer-bottom { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: rgba(255,255,255,.4); }

/* Responsive */
@media (max-width: 1024px) {
  .section { padding: 80px 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-split { gap: 40px; }
  .hero-title { font-size: 46px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-title { font-size: 30px; }
  .nav-toggle { display: flex; }
  .nav-links { position: absolute; top: 74px; left: 0; right: 0; background: var(--bg-white); flex-direction: column; align-items: stretch; gap: 6px; padding: 16px 24px 24px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); display: none; }
  .nav-links.open { display: flex; }
  .nav-link { padding: 12px 18px; border-radius: 12px; font-size: 16px; }
  .search-box { display: none; }
  .nav-right .btn { display: none; }
  .site-header .container { position: relative; }
  .hero-title { font-size: 36px; letter-spacing: -1px; }
  .hero-copy { font-size: 16px; }
  .hero-inner { padding: 90px 0 48px; }
  .posts-grid { grid-template-columns: 1fr; }
  .feature-split { grid-template-columns: 1fr; }
  .feature-visual img { width: 100%; }
  .data-float { right: 12px; }
  .footer-main { grid-template-columns: 1fr; gap: 32px; }
  .cta-inner { grid-template-columns: 1fr; }
  .quote-text { font-size: 22px; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .section { padding: 56px 0; }
  .section-title { font-size: 26px; }
  .stats-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 30px; }
  .hero-info-strip { gap: 16px 24px; }
  .info-item strong { font-size: 20px; }
  .btn { padding: 10px 20px; font-size: 13px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}