/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --green-900: #17352A;
  --green-800: #1B3A2E;
  --green-700: #214538;
  --green-600: #2A5644;
  --copper-400: #C2A36B;
  --copper-500: #B4975A;
  --copper-600: #9A7E48;
  --paper: #F6F4EF;
  --paper-2: #F8F6F1;
  --dark: #101713;
  --dark-2: #141A16;
  --text-main: #1E231F;
  --text-muted: #6B726D;
  --line: #E3DCCF;
  --line-dark: rgba(255,255,255,0.09);
  --shadow-1: 0 4px 20px rgba(23,53,42,0.06);
  --shadow-2: 0 12px 40px rgba(23,53,42,0.12);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 6px;
  --radius-pill: 999px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 32px;
  --space-lg: 64px;
  --space-xl: 96px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --font-serif: "Source Han Serif SC", "Noto Serif SC", "SimSun", "Songti SC", serif;
  --font-sans: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ===== 基础 reset ===== */
*, *::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: 1.85;
  color: var(--text-main);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s var(--ease-out); }
ul, ol { list-style: none; }
button, input { font-family: inherit; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.section { padding: var(--space-xl) 0; position: relative; }
.section-head { margin-bottom: 48px; }
.section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: 1px;
  color: var(--copper-600);
  background: rgba(180,151,90,0.1);
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--green-900);
  letter-spacing: 1px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 560px;
  margin-top: 16px;
  line-height: 1.9;
}
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  font-size: 15px; font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .28s var(--ease-out);
  white-space: nowrap;
  line-height: 1.2;
}
.btn-primary {
  background: var(--green-900);
  color: #F6F4EF;
}
.btn-primary:hover {
  background: var(--copper-500);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(180,151,90,0.25);
}
.btn-outline {
  background: transparent;
  border-color: var(--green-900);
  color: var(--green-900);
}
.btn-outline:hover {
  background: rgba(23,53,42,0.06);
  border-color: var(--green-700);
  color: var(--green-800);
}
.btn-outline-light {
  background: transparent;
  border-color: rgba(246,244,239,0.5);
  color: #F6F4EF;
}
.btn-outline-light:hover {
  background: rgba(246,244,239,0.1);
  border-color: #F6F4EF;
  color: #fff;
}
.btn-lg { padding: 16px 40px; font-size: 17px; }
.btn-sm { padding: 10px 22px; font-size: 14px; }
.btn .fa-arrow-right { font-size: 13px; transition: transform .25s var(--ease-out); }
.btn:hover .fa-arrow-right { transform: translateX(4px); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--copper-500);
  outline-offset: 2px;
}

/* ===== 徽章 / 标签 ===== */
.badge {
  display: inline-flex; align-items: center;
  font-size: 12px; font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.5px;
}
.badge-copper { background: rgba(180,151,90,0.15); color: var(--copper-600); }
.badge-green { background: rgba(23,53,42,0.1); color: var(--green-800); }
.badge-light { background: rgba(246,244,239,0.14); color: #E3DCCF; }
.badge-outline { background: transparent; border: 1px solid var(--line); color: var(--text-muted); }

/* ===== Header 导航 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(16,23,19,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: box-shadow .3s ease;
}
.site-header.is-scrolled { box-shadow: 0 4px 24px rgba(0,0,0,0.25); }
.header-inner {
  display: flex; align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand { flex-shrink: 0; }
.brand-logo { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: var(--copper-500);
  color: var(--green-900);
  font-family: var(--font-serif);
  font-size: 22px; font-weight: 700;
  border-radius: 10px;
  line-height: 1;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name {
  font-family: var(--font-serif);
  font-size: 20px; font-weight: 700;
  color: #F6F4EF;
  letter-spacing: 2px;
}
.brand-sub {
  font-size: 10px; font-weight: 400;
  color: rgba(246,244,239,0.5);
  letter-spacing: 2.5px;
}
.mainnav {
  display: flex; align-items: center;
  gap: 6px;
  margin-left: 24px;
}
.nav-link {
  position: relative;
  display: inline-flex; align-items: center;
  padding: 8px 18px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(246,244,239,0.8);
  border-radius: var(--radius-sm);
  transition: color .25s var(--ease-out);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 18px; right: 18px; bottom: 2px;
  height: 2px;
  background: var(--copper-400);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease-out);
}
.nav-link:hover { color: #fff; }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.is-active { color: #fff; font-weight: 600; }
.nav-link.is-active::after { transform: scaleX(1); }
.header-actions {
  display: flex; align-items: center;
  gap: 14px;
  margin-left: auto;
}
.search-box {
  position: relative;
  display: flex; align-items: center;
}
.search-box input {
  width: 180px;
  height: 40px;
  background: rgba(246,244,239,0.08);
  border: 1px solid rgba(246,244,239,0.16);
  border-radius: var(--radius-sm);
  padding: 0 38px 0 14px;
  font-size: 13px;
  color: #F6F4EF;
  transition: all .3s var(--ease-out);
}
.search-box input::placeholder { color: rgba(246,244,239,0.45); }
.search-box input:focus {
  width: 240px;
  background: rgba(246,244,239,0.12);
  border-color: var(--copper-500);
  outline: none;
}
.search-box .search-shortcut {
  position: absolute;
  right: 10px;
  font-size: 12px;
  color: rgba(246,244,239,0.4);
  border: 1px solid rgba(246,244,239,0.2);
  border-radius: 4px;
  padding: 1px 7px;
  pointer-events: none;
}
.icon-btn {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  color: rgba(246,244,239,0.7);
  font-size: 17px;
  border: 1px solid transparent;
  transition: all .25s var(--ease-out);
}
.icon-btn:hover {
  color: #fff;
  border-color: rgba(246,244,239,0.2);
  background: rgba(246,244,239,0.08);
}
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid rgba(246,244,239,0.2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 18px; height: 2px;
  background: #F6F4EF;
  border-radius: 2px;
  transition: all .3s var(--ease-out);
}
.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); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--dark);
  padding: 140px 0 80px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.4;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, var(--dark) 0%, rgba(16,23,19,0.82) 45%, rgba(16,23,19,0.55) 100%);
}
.hero .container { position: relative; z-index: 2; }
.hero-content {
  display: flex;
  align-items: center;
  gap: 60px;
}
.hero-copy { flex: 1 1 58%; }
.hero-visual { flex: 1 1 42%; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 3px;
  color: var(--copper-400);
  background: rgba(180,151,90,0.12);
  border: 1px solid rgba(180,151,90,0.25);
  padding: 6px 20px;
  border-radius: var(--radius-pill);
  margin-bottom: 28px;
}
.hero-tag::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--copper-500);
  border-radius: 50%;
  display: inline-block;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(34px, 5.2vw, 56px);
  font-weight: 700;
  line-height: 1.3;
  color: #F6F4EF;
  letter-spacing: 2px;
  margin-bottom: 24px;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
.hero-title.is-visible { opacity: 1; transform: translateY(0); }
.hero-subtitle {
  font-size: 17px;
  line-height: 2;
  color: rgba(246,244,239,0.75);
  max-width: 480px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual img {
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 80px rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.12);
  transform: rotate(1deg);
  transition: transform .5s var(--ease-out);
}
.hero-visual img:hover { transform: rotate(0deg) scale(1.01); }
.hero-scroll {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  color: rgba(246,244,239,0.5);
  font-size: 16px;
  z-index: 3;
  animation: floatDown 2.5s ease-in-out infinite;
  transition: color .3s;
}
.hero-scroll:hover { color: var(--copper-400); }
@keyframes floatDown {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== 数据条 ===== */
.data-bar { background: var(--paper-2); border-bottom: 1px solid var(--line); }
.data-bar .grid-x { padding: 48px 0; }
.data-stat { text-align: center; position: relative; padding: 16px 24px; }
.data-stat + .data-stat::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  height: 60px; width: 1px;
  background: var(--line);
}
.stat-number {
  font-family: var(--font-serif);
  font-size: clamp(36px, 3.6vw, 52px);
  font-weight: 700;
  color: var(--green-900);
  line-height: 1.2;
  letter-spacing: 1px;
}
.stat-number .stat-suffix { font-size: 0.6em; margin-left: 2px; color: var(--copper-600); }
.stat-label {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* ===== 功能分组区 ===== */
.features-section { background: var(--paper); }
.features-layout {
  display: flex;
  gap: 64px;
  align-items: flex-start;
}
.features-head {
  flex: 0 0 38%;
  position: sticky;
  top: 120px;
}
.features-grid {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.feature-card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all .35s var(--ease-out);
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
  border-color: rgba(180,151,90,0.35);
}
.feature-card .icon-wrap {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: var(--green-900);
  color: var(--copper-400);
  border-radius: 12px;
  font-size: 20px;
  margin-bottom: 20px;
  transition: all .35s var(--ease-out);
}
.feature-card:hover .icon-wrap {
  background: var(--copper-500);
  color: var(--green-900);
}
.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--green-900);
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.feature-card.feature-lg {
  grid-row: span 2;
  padding: 44px 32px;
  background: var(--green-900);
  border-color: transparent;
}
.feature-card.feature-lg h3 { color: #F6F4EF; font-size: 26px; }
.feature-card.feature-lg p { color: rgba(246,244,239,0.7); font-size: 15px; }
.feature-card.feature-lg .icon-wrap { background: var(--copper-500); color: var(--green-900); }
.feature-card.feature-lg:hover { box-shadow: 0 16px 48px rgba(16,23,19,0.35); transform: translateY(-4px); }

/* ===== 场景区 ===== */
.scenes-section { background: var(--paper-2); }
.scene-block {
  display: flex;
  align-items: center;
  gap: 60px;
  margin-bottom: 72px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 72px;
}
.scene-block:last-child { border-bottom: none; padding-bottom: 0; margin-bottom: 0; }
.scene-img { flex: 0 0 48%; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-2); position: relative; }
.scene-img img { width: 100%; aspect-ratio: 16/10; object-fit: cover; transition: transform .5s var(--ease-out); }
.scene-img:hover img { transform: scale(1.03); }
.scene-copy { flex: 1; }
.scene-copy h3 {
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.6vw, 28px);
  font-weight: 700;
  color: var(--green-900);
  margin-bottom: 18px;
  line-height: 1.4;
}
.scene-copy .scene-points { margin-top: 18px; }
.scene-copy .scene-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 10px;
}
.scene-copy .scene-points li i {
  color: var(--copper-500);
  font-size: 13px;
  margin-top: 6px;
}
.scene-banner {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  margin-top: 24px;
}
.scene-banner .banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(16,23,19,0.85) 0%, rgba(16,23,19,0.5) 100%);
}
.scene-banner .banner-content {
  position: relative;
  z-index: 2;
  padding: 56px;
  max-width: 60%;
}
.scene-banner .banner-content h3 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: #F6F4EF;
  margin-bottom: 16px;
}
.scene-banner .banner-content p {
  font-size: 15px;
  color: rgba(246,244,239,0.75);
  line-height: 1.9;
}

/* ===== 案例区 ===== */
.cases-section { background: var(--dark); }
.cases-section .section-title { color: #F6F4EF; }
.cases-section .section-desc { color: rgba(246,244,239,0.6); }
.case-list { margin-top: 48px; display: flex; flex-direction: column; gap: 16px; }
.case-row {
  display: flex;
  align-items: center;
  gap: 32px;
  background: rgba(246,244,239,0.05);
  border: 1px solid rgba(246,244,239,0.08);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  transition: all .35s var(--ease-out);
}
.case-row:hover {
  background: var(--green-900);
  border-color: rgba(180,151,90,0.4);
  transform: translateX(6px);
}
.case-rank {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  color: var(--copper-500);
  flex-shrink: 0;
  width: 64px;
  text-align: center;
}
.case-info { flex: 1; }
.case-info h4 {
  font-size: 18px;
  font-weight: 600;
  color: #F6F4EF;
  margin-bottom: 6px;
}
.case-info p { font-size: 14px; color: rgba(246,244,239,0.55); line-height: 1.7; }
.case-result { text-align: right; flex-shrink: 0; }
.case-result .num {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  color: var(--copper-400);
  display: block;
  line-height: 1.2;
}
.case-result .note { font-size: 12px; color: rgba(246,244,239,0.45); margin-top: 4px; }
.case-row .case-link {
  font-size: 13px;
  color: rgba(246,244,239,0.6);
  margin-top: 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color .3s;
}
.case-row:hover .case-link { color: var(--copper-400); }

/* ===== 价格区 ===== */
.pricing-section { background: var(--paper); }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: stretch;
  margin-top: 48px;
}
.pricing-card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all .35s var(--ease-out);
}
.pricing-card:hover {
  box-shadow: var(--shadow-2);
  transform: translateY(-4px);
}
.pricing-card.is-featured {
  border: 2px solid var(--copper-500);
  background: #fff;
  box-shadow: var(--shadow-2);
}
.pricing-card .featured-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--copper-500);
  color: var(--green-900);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 20px;
  border-radius: var(--radius-pill);
  letter-spacing: 1px;
  white-space: nowrap;
}
.pricing-card .plan-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--green-900);
  margin-bottom: 4px;
}
.pricing-card .plan-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.pricing-card .price-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 24px;
}
.pricing-card .price {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 700;
  color: var(--green-900);
  line-height: 1;
}
.pricing-card .price-period { font-size: 14px; color: var(--text-muted); }
.pricing-card .plan-features {
  flex: 1;
  margin-bottom: 28px;
}
.pricing-card .plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  padding: 5px 0;
}
.pricing-card .plan-features li i {
  color: var(--copper-500);
  font-size: 13px;
  margin-top: 5px;
}
.pricing-card .btn { width: 100%; }
.pricing-card .custom-link {
  display: block;
  text-align: center;
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-muted);
}
.pricing-card .custom-link:hover { color: var(--copper-600); text-decoration: underline; }

/* ===== 资讯区 ===== */
.news-section { background: var(--paper-2); }
.news-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  margin-top: 48px;
}
.news-feature-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-1);
  border: 1px solid var(--line);
  transition: all .35s var(--ease-out);
}
.news-feature-card:hover {
  box-shadow: var(--shadow-2);
  transform: translateY(-4px);
}
.news-feature-link { display: flex; flex-direction: column; height: 100%; }
.news-feature-image {
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
}
.news-feature-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease-out);
}
.news-feature-card:hover .news-feature-image img { transform: scale(1.04); }
.news-feature-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(16,23,19,0.25) 100%);
}
.news-feature-body { padding: 28px 32px; display: flex; flex-direction: column; flex: 1; }
.news-feature-body h3 {
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 700;
  color: var(--green-900);
  line-height: 1.5;
  margin: 14px 0 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-feature-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.9;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.news-meta time { font-size: 13px; color: var(--text-muted); }
.read-more {
  font-size: 13px;
  font-weight: 600;
  color: var(--green-800);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color .3s;
}
.news-feature-card:hover .read-more { color: var(--copper-600); }
.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.news-list-item {
  display: flex;
  align-items: center;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: all .3s var(--ease-out);
}
.news-list-item:hover {
  box-shadow: var(--shadow-1);
  transform: translateX(4px);
  border-color: rgba(180,151,90,0.35);
}
.news-thumb {
  width: 92px; height: 64px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s var(--ease-out); }
.news-list-item:hover .news-thumb img { transform: scale(1.05); }
.news-content { flex: 1; min-width: 0; }
.news-title {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color .3s;
  line-height: 1.5;
  margin-bottom: 4px;
}
.news-list-item:hover .news-title { color: var(--copper-600); }
.news-excerpt {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.news-list-item time {
  flex-shrink: 0;
  font-size: 12px;
  color: var(--text-muted);
  background: var(--paper);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
}
.news-empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 24px;
  background: #fff;
  border: 1px dashed var(--line);
  border-radius: var(--radius-lg);
}
.news-empty-state .empty-icon {
  font-size: 40px;
  color: var(--copper-500);
  margin-bottom: 16px;
  opacity: 0.5;
}
.news-empty-state p {
  font-size: 16px;
  color: var(--text-muted);
}

/* ===== FAQ ===== */
.faq-section { background: var(--paper); }
.faq-layout {
  display: flex;
  gap: 64px;
  align-items: flex-start;
}
.faq-head { flex: 0 0 36%; position: sticky; top: 120px; }
.faq-list { flex: 1; }
.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 26px 0;
}
.faq-item:first-child { padding-top: 0; }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  transition: color .3s;
}
.faq-q:hover { color: var(--green-800); }
.faq-q .faq-icon {
  width: 28px; height: 28px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 12px;
  color: var(--green-900);
  transition: all .35s var(--ease-out);
}
.faq-item.is-open .faq-q { color: var(--green-900); }
.faq-item.is-open .faq-icon {
  background: var(--green-900);
  color: #F6F4EF;
  transform: rotate(45deg);
  border-color: var(--green-900);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s var(--ease-out);
}
.faq-a-inner {
  padding-top: 14px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.95;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  background: var(--dark);
  padding: 120px 0;
  text-align: center;
  overflow: hidden;
}
.cta-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.25;
}
.cta-content { position: relative; z-index: 2; }
.cta-content h2 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  color: #F6F4EF;
  line-height: 1.4;
  margin-bottom: 18px;
}
.cta-content p {
  font-size: 16px;
  color: rgba(246,244,239,0.65);
  max-width: 480px;
  margin: 0 auto 40px;
  line-height: 1.9;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta-note {
  margin-top: 28px;
  font-size: 12px;
  color: rgba(246,244,239,0.35);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark-2);
  border-top: 1px solid var(--line-dark);
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .brand-logo { margin-bottom: 18px; }
.footer-brand p {
  font-size: 14px;
  color: rgba(246,244,239,0.5);
  line-height: 1.9;
  max-width: 280px;
}
.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #F6F4EF;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  font-size: 14px;
  color: rgba(246,244,239,0.55);
  transition: all .3s;
}
.footer-links a:hover { color: var(--copper-400); padding-left: 4px; }
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: rgba(246,244,239,0.55);
  margin-bottom: 12px;
}
.footer-contact li i {
  color: var(--copper-500);
  font-size: 14px;
  margin-top: 5px;
}
.footer-bottom {
  border-top: 1px solid var(--line-dark);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 13px;
  color: rgba(246,244,239,0.35);
}
.footer-bottom .icp {
  font-size: 12px;
  color: rgba(246,244,239,0.25);
}

/* ===== 响应式 ===== */
@media screen and (max-width: 1024px) {
  :root { --space-xl: 72px; --space-lg: 48px; }
  .mainnav { display: none; }
  .nav-toggle { display: flex; }
  .mainnav.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0; right: 0;
    background: var(--dark);
    padding: 16px 24px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--line-dark);
    box-shadow: 0 12px 30px rgba(0,0,0,0.3);
    margin-left: 0;
  }
  .mainnav.is-open .nav-link { padding: 14px 16px; }
  .hero { padding-top: 120px; }
  .hero-content { flex-direction: column-reverse; gap: 40px; }
  .hero-copy { flex: 1 1 100%; }
  .hero-visual { flex: 1 1 100%; max-width: 560px; }
  .search-box input { width: 140px; }
  .search-box input:focus { width: 180px; }
  .features-layout { flex-direction: column; gap: 40px; }
  .features-head { position: static; flex: 1 1 100%; }
  .scene-block { flex-direction: column; gap: 32px; }
  .scene-block:nth-child(even) .scene-img { order: -1; }
  .scene-img { flex: 1 1 100%; width: 100%; }
  .pricing-grid { grid-template-columns: 1fr; gap: 24px; max-width: 420px; margin-left: auto; margin-right: auto; }
  .news-layout { grid-template-columns: 1fr; }
  .faq-layout { flex-direction: column; gap: 40px; }
  .faq-head { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .scene-banner .banner-content { max-width: 80%; padding: 40px; }
  .case-row { flex-wrap: wrap; padding: 24px; gap: 16px; }
  .case-result { text-align: left; }
}
@media screen and (max-width: 640px) {
  :root { --space-xl: 56px; --space-lg: 40px; --font-size: 15px; }
  body { font-size: 15px; }
  .container { padding: 0 18px; }
  .header-inner { height: 64px; gap: 12px; }
  .brand-mark { width: 34px; height: 34px; font-size: 18px; }
  .brand-name { font-size: 17px; }
  .brand-sub { font-size: 9px; }
  .search-box { display: none; }
  .icon-btn { display: none; }
  .header-actions .btn-sm { padding: 9px 16px; font-size: 13px; }
  .mainnav.is-open { top: 64px; }
  .hero { min-height: auto; padding: 104px 0 56px; }
  .hero-title { font-size: 30px; line-height: 1.35; }
  .hero-subtitle { font-size: 15px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .data-bar .grid-x { padding: 32px 0; }
  .data-stat { padding: 12px 8px; }
  .stat-number { font-size: 32px; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-card.feature-lg { grid-row: auto; }
  .section-title { font-size: 30px; }
  .section-desc { font-size: 15px; }
  .scene-block { margin-bottom: 48px; padding-bottom: 48px; }
  .scene-banner .banner-content { max-width: 100%; padding: 28px; }
  .scene-banner .banner-content h3 { font-size: 22px; }
  .case-row { flex-direction: column; }
  .case-rank { width: auto; }
  .news-list-item { padding: 14px; }
  .news-thumb { width: 72px; height: 56px; }
  .news-title { font-size: 14px; }
  .news-excerpt { font-size: 12px; }
  .news-list-item time { display: none; }
  .news-feature-body { padding: 20px; }
  .pricing-card { padding: 32px 24px; }
  .faq-item { padding: 20px 0; }
  .faq-q { font-size: 15px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== 通用卡片 hover ===== */
.card-hover { transition: all .35s var(--ease-out); }
.card-hover:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }

/* roulang page: category1 */
:root{
  --primary:#17352A;
  --primary-light:#1B3A2E;
  --primary-soft:#24483A;
  --accent:#B4975A;
  --accent-light:#C2A36B;
  --accent-deep:#8C7440;
  --bg:#F6F4EF;
  --bg-card:#FFFFFF;
  --bg-dark:#101713;
  --text:#1E231F;
  --text-muted:#6B726D;
  --border:#E3DCCF;
  --radius-lg:18px;
  --radius-md:10px;
  --radius-sm:5px;
  --shadow-sm:0 4px 20px rgba(23,53,42,0.06);
  --shadow-lg:0 12px 40px rgba(23,53,42,0.12);
  --ease:cubic-bezier(0.22,1,0.36,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::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:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:color .25s var(--ease)}
ul,ol{list-style:none}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}

.container{max-width:1280px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--bg-card)}
.section-dark{background:var(--bg-dark);color:#E8E4DA}

.sec-head{max-width:680px;margin-bottom:56px}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--accent-deep);background:rgba(180,151,90,.1);
  padding:4px 14px;border-radius:999px;margin-bottom:16px;
  text-transform:uppercase;
}
.sec-title{
  font-family:var(--font-serif);
  font-size:42px;line-height:1.3;font-weight:700;
  color:var(--text);letter-spacing:-.01em;
}
.sec-sub{
  font-size:16px;line-height:1.9;color:var(--text-muted);
  margin-top:16px;
}
.section-dark .sec-title{color:#F0EDE4}
.section-dark .sec-sub{color:#A8B0AA}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--primary);
  backdrop-filter:blur(12px);
  box-shadow:0 2px 16px rgba(0,0,0,.16);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;gap:24px;
}
.brand{flex-shrink:0}
.brand-logo{display:inline-flex;align-items:center;gap:12px}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  background:var(--accent);color:var(--primary);
  font-family:var(--font-serif);font-size:20px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:18px;font-weight:700;color:#F6F4EF;letter-spacing:.04em}
.brand-sub{font-size:10px;color:var(--accent-light);letter-spacing:.28em}
.mainnav{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  font-size:14px;font-weight:500;color:rgba(246,244,239,.78);
  padding:8px 16px;border-radius:var(--radius-sm);
  transition:color .25s var(--ease),background .25s var(--ease);
}
.nav-link:hover{color:#F6F4EF;background:rgba(255,255,255,.06)}
.nav-link::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;
  height:2px;background:var(--accent-light);
  transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease);border-radius:2px;
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:#F6F4EF;font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  border-radius:8px;padding:6px 12px;width:200px;
  transition:width .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.search-box:focus-within{
  width:230px;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(180,151,90,.18);
}
.search-box input{
  flex:1;background:transparent;border:none;outline:none;
  color:#F6F4EF;font-size:13px;min-width:0;
}
.search-box input::placeholder{color:rgba(246,244,239,.5)}
.search-shortcut{
  font-size:11px;color:rgba(246,244,239,.45);
  border:1px solid rgba(255,255,255,.18);
  border-radius:4px;padding:1px 6px;line-height:1.5;
  flex-shrink:0;
}
.icon-btn{
  width:36px;height:36px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  color:rgba(246,244,239,.7);border:1px solid rgba(255,255,255,.14);
  transition:all .25s var(--ease);
}
.icon-btn:hover{color:var(--accent-light);border-color:var(--accent);background:rgba(180,151,90,.1)}
.nav-toggle{
  display:none;flex-direction:column;gap:4px;
  background:transparent;border:none;cursor:pointer;padding:8px;
}
.nav-toggle span{
  width:20px;height:2px;background:#F6F4EF;border-radius:2px;
  transition:all .3s var(--ease);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:14px;font-weight:600;border-radius:var(--radius-sm);
  padding:16px 32px;cursor:pointer;border:none;
  transition:all .3s var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--accent);color:var(--primary)}
.btn-primary:hover{background:var(--accent-light);transform:translateY(-2px);box-shadow:0 8px 24px rgba(180,151,90,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{
  background:transparent;color:#F6F4EF;
  border:1px solid rgba(246,244,239,.45);padding:15px 30px;
}
.btn-secondary:hover{border-color:var(--accent-light);color:var(--accent-light);background:rgba(180,151,90,.08)}
.btn-outline{
  background:transparent;color:var(--primary);
  border:1px solid var(--primary);padding:15px 30px;
}
.btn-outline:hover{background:rgba(23,53,42,.05);border-color:var(--accent);color:var(--accent-deep)}
.btn-sm{padding:10px 20px;font-size:13px}

/* ---------- Hero / 栏目头区 ---------- */
.cat-hero{
  position:relative;
  background:linear-gradient(135deg,rgba(16,23,19,.93) 0%,rgba(23,53,42,.88) 55%,rgba(27,58,46,.82) 100%);
  color:#F6F4EF;
  padding:100px 0 120px;
  overflow:hidden;
}
.cat-hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.22;
}
.cat-hero::after{
  content:"";position:absolute;bottom:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent),transparent);
}
.cat-hero-content{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:rgba(246,244,239,.55);
  margin-bottom:28px;
}
.breadcrumb a{color:rgba(246,244,239,.65)}
.breadcrumb a:hover{color:var(--accent-light)}
.breadcrumb .sep{color:rgba(246,244,239,.3)}
.breadcrumb .current{color:var(--accent-light)}
.cat-hero h1{
  font-family:var(--font-serif);
  font-size:64px;line-height:1.15;font-weight:700;
  letter-spacing:.02em;margin-bottom:20px;
}
.cat-hero h1 .dot{color:var(--accent)}
.cat-hero p{
  font-size:17px;line-height:1.9;color:rgba(246,244,239,.8);
  max-width:560px;margin-bottom:36px;
}
.cat-hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.cat-hero-meta{
  display:flex;align-items:center;gap:24px;
  margin-top:48px;flex-wrap:wrap;
}
.chm-item{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:rgba(246,244,239,.6);
}
.chm-item i{color:var(--accent-light)}

/* ---------- Stats Bar / 可信数据条 ---------- */
.stats-bar{
  background:var(--bg-card);
  border-bottom:1px solid var(--border);
  padding:48px 0;
  margin-top:-1px;
}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.stat-item{text-align:center;padding:8px 16px}
.stat-number{
  font-family:var(--font-serif);
  font-size:44px;font-weight:700;color:var(--primary);
  line-height:1.2;letter-spacing:-.02em;
}
.stat-number .unit{font-size:18px;color:var(--accent);margin-left:2px}
.stat-label{font-size:14px;color:var(--text-muted);margin-top:8px}
.stat-line{
  width:32px;height:2px;background:var(--accent);margin:12px auto 0;
  border-radius:2px;transition:width .4s var(--ease);
}
.stat-item:hover .stat-line{width:52px}

/* ---------- Feature / 核心内容 2x2 ---------- */
.feature-section{padding:100px 0}
.feature-layout{display:grid;grid-template-columns:5fr 7fr;gap:72px;align-items:start}
.feature-sticky{position:sticky;top:120px}
.feature-sticky .sec-title{font-size:44px;margin-bottom:20px}
.feature-sticky p{color:var(--text-muted);line-height:1.9;margin-bottom:32px}
.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.feature-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:32px 28px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.feature-card:nth-child(2){margin-top:32px}
.feature-card:nth-child(4){margin-top:-16px}
.feature-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(180,151,90,.4);
}
.fc-icon{
  width:44px;height:44px;border-radius:10px;
  background:var(--primary);color:var(--accent-light);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;margin-bottom:20px;
  transition:background .35s var(--ease),color .35s var(--ease);
}
.feature-card:hover .fc-icon{background:var(--accent);color:var(--primary)}
.fc-title{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--text)}
.fc-desc{font-size:14px;line-height:1.75;color:var(--text-muted)}

/* ---------- Coverage / 覆盖范围 ---------- */
.coverage-section{
  background:var(--bg-card);
  border-top:1px solid var(--border);border-bottom:1px solid var(--border);
}
.cov-layout{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.cov-visual{
  border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-lg);position:relative;
}
.cov-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}
.cov-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(23,53,42,.35),transparent 60%);
}
.cov-list{display:flex;flex-direction:column;gap:4px}
.cov-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 22px;border-bottom:1px solid var(--border);
  transition:background .25s var(--ease),padding-left .35s var(--ease);
}
.cov-row:hover{background:rgba(180,151,90,.05);padding-left:28px}
.cov-name{font-size:16px;font-weight:600}
.cov-tag{
  font-size:12px;color:var(--accent-deep);
  background:rgba(180,151,90,.1);padding:2px 10px;border-radius:999px;
}
.cov-num{
  font-family:var(--font-serif);font-size:20px;font-weight:700;
  color:var(--primary);width:48px;text-align:center;
}

/* ---------- Scenario / 适用场景 ---------- */
.scenario-section{padding:100px 0}
.scenario-stack{display:flex;flex-direction:column;gap:48px}
.scenario-block{
  display:grid;grid-template-columns:1fr 1fr;gap:0;
  background:var(--bg-card);border-radius:var(--radius-lg);
  overflow:hidden;border:1px solid var(--border);
  transition:box-shadow .35s var(--ease);
}
.scenario-block:hover{box-shadow:var(--shadow-lg)}
.scenario-media{overflow:hidden;min-height:300px;position:relative}
.scenario-media img{
  width:100%;height:100%;object-fit:cover;position:absolute;inset:0;
  transition:transform .5s var(--ease);
}
.scenario-block:hover .scenario-media img{transform:scale(1.03)}
.scenario-content{padding:48px;display:flex;flex-direction:column;justify-content:center}
.scenario-content h3{
  font-family:var(--font-serif);font-size:28px;font-weight:700;
  margin-bottom:8px;color:var(--text);
}
.scenario-content .sc-tagline{
  color:var(--accent-deep);font-size:14px;font-weight:600;margin-bottom:20px;
  display:inline-block;
}
.scenario-content ul{display:flex;flex-direction:column;gap:14px;margin-top:8px}
.scenario-content li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-muted);line-height:1.7;
}
.scenario-content li i{color:var(--accent);margin-top:5px;font-size:14px;flex-shrink:0}

/* ---------- Process / 更新流程 ---------- */
.process-section{
  background:linear-gradient(135deg,rgba(16,23,19,.96),rgba(23,53,42,.92)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;color:#F6F4EF;
}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;position:relative}
.process-grid::before{
  content:"";position:absolute;top:30px;left:8%;right:8%;height:1px;
  background:rgba(180,151,90,.3);
}
.process-step{position:relative;text-align:center;padding-top:16px}
.p-step-line{
  position:absolute;top:-18px;left:50%;transform:translateX(-50%);
  width:24px;height:24px;border-radius:50%;
  background:var(--accent);border:4px solid var(--bg-dark);
  z-index:2;
}
.process-step .p-icon{
  width:52px;height:52px;border-radius:12px;
  background:rgba(180,151,90,.12);border:1px solid rgba(180,151,90,.3);
  color:var(--accent-light);font-size:20px;
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 18px;
}
.process-step h4{font-size:16px;font-weight:700;margin-bottom:8px;color:#F0EDE4}
.process-step p{font-size:13px;line-height:1.7;color:#A8B0AA}
.process-step .p-num{
  font-family:var(--font-serif);font-size:14px;color:var(--accent);letter-spacing:.1em;
  display:block;margin-bottom:6px;
}

/* ---------- FAQ ---------- */
.faq-section{padding:100px 0}
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:64px;align-items:start}
.faq-left{position:sticky;top:120px}
.faq-item{
  border-bottom:1px solid var(--border);
  padding:24px 4px;
}
.faq-q{
  display:flex;align-items:center;gap:16px;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--text);
  transition:color .25s var(--ease);
}
.faq-q i{
  width:30px;height:30px;border-radius:50%;
  border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--accent);flex-shrink:0;
  transition:all .3s var(--ease);
}
.faq-item.open .faq-q{color:var(--primary)}
.faq-item.open .faq-q i{
  background:var(--primary);color:var(--accent-light);border-color:var(--primary);
  transform:rotate(45deg);
}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .35s var(--ease);
}
.faq-a-inner{
  padding:14px 0 4px 46px;font-size:15px;color:var(--text-muted);line-height:1.85;
}

/* ---------- CTA ---------- */
.cta-section{
  background:var(--bg-dark);color:#F6F4EF;
  padding:110px 0;text-align:center;position:relative;overflow:hidden;
}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  opacity:.12;
}
.cta-inner{position:relative;z-index:2;max-width:720px;margin:0 auto}
.cta-inner h2{
  font-family:var(--font-serif);font-size:46px;font-weight:700;line-height:1.3;
  margin-bottom:18px;
}
.cta-inner h2 .emp{color:var(--accent-light)}
.cta-inner p{font-size:16px;color:#A8B0AA;margin-bottom:36px;line-height:1.85}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta-note{
  margin-top:24px;font-size:12px;color:#6B726D;
}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-dark);color:#A8B0AA;padding:72px 0 0;border-top:1px solid rgba(180,151,90,.15)}
.footer-grid{
  display:grid;grid-template-columns:4fr 2.5fr 2.5fr 3fr;gap:48px;
  padding-bottom:56px;border-bottom:1px solid rgba(255,255,255,.06);
}
.footer-brand p{font-size:14px;line-height:1.85;margin-top:18px;color:#8A928C}
.footer-brand .brand-name{color:#F6F4EF}
.footer-title{
  font-size:14px;font-weight:700;color:#F0EDE4;letter-spacing:.06em;
  margin-bottom:20px;position:relative;padding-bottom:10px;
}
.footer-title::after{
  content:"";position:absolute;left:0;bottom:0;width:24px;height:2px;
  background:var(--accent);border-radius:2px;
}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{
  font-size:14px;color:#8A928C;transition:color .25s var(--ease),padding-left .25s var(--ease);
}
.footer-links a:hover{color:var(--accent-light);padding-left:6px}
.footer-contact{display:flex;flex-direction:column;gap:14px}
.footer-contact li{
  display:flex;align-items:center;gap:12px;font-size:14px;color:#8A928C;
}
.footer-contact i{color:var(--accent);width:18px;text-align:center}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;
  padding:24px 0;font-size:13px;color:#6B726D;flex-wrap:wrap;gap:12px;
}
.footer-bottom .icp{color:#6B726D}

/* ---------- Animations ---------- */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(24px)}
  to{opacity:1;transform:translateY(0)}
}
.fade-up{animation:fadeUp .6s var(--ease) both}
.delay-1{animation-delay:.1s}
.delay-2{animation-delay:.2s}
.delay-3{animation-delay:.3s}

/* ---------- Responsive ---------- */
@media screen and (max-width:1024px){
  .feature-layout{grid-template-columns:1fr;gap:48px}
  .feature-sticky{position:static}
  .cov-layout{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .process-grid{grid-template-columns:1fr 1fr;gap:48px 32px}
  .process-grid::before{display:none}
  .faq-layout{grid-template-columns:1fr;gap:40px}
  .faq-left{position:static}
  .cat-hero h1{font-size:52px}
}
@media screen and (max-width:768px){
  .section{padding:72px 0}
  .sec-title{font-size:34px}
  .cat-hero{padding:80px 0 100px}
  .cat-hero h1{font-size:42px}
  .stat-grid{grid-template-columns:1fr 1fr;gap:24px}
  .stat-number{font-size:36px}
  .feature-grid{grid-template-columns:1fr;gap:20px}
  .feature-card:nth-child(2),.feature-card:nth-child(4){margin-top:0}
  .scenario-block{grid-template-columns:1fr}
  .scenario-media{min-height:220px;position:relative}
  .scenario-media img{position:absolute;inset:0;width:100%;height:100%}
  .scenario-content{padding:32px 28px}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .cta-inner h2{font-size:36px}
  .header-inner{height:64px;gap:12px}
  .mainnav{
    position:fixed;top:64px;left:0;right:0;
    background:var(--primary);
    flex-direction:column;align-items:stretch;
    padding:12px 24px 20px;
    box-shadow:0 12px 30px rgba(0,0,0,.3);
    transform:translateY(-120%);opacity:0;pointer-events:none;
    transition:transform .35s var(--ease),opacity .3s var(--ease);
    z-index:99;
  }
  .mainnav.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-link{padding:14px 16px;font-size:16px}
  .search-box{display:none}
  .nav-toggle{display:flex}
  .btn-sm{padding:10px 16px}
}
@media screen and (max-width:520px){
  .container{padding:0 18px}
  .section{padding:60px 0}
  .sec-title{font-size:30px}
  .cat-hero h1{font-size:36px}
  .cat-hero p{font-size:15px}
  .cat-hero-cta{flex-direction:column}
  .cat-hero-cta .btn{width:100%}
  .stat-grid{grid-template-columns:1fr 1fr;gap:16px}
  .stat-number{font-size:32px}
  .process-grid{grid-template-columns:1fr;gap:36px}
  .cov-row{padding:14px 16px}
  .faq-q{font-size:15px}
  .faq-a-inner{padding-left:0}
  .cta-inner h2{font-size:30px}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;text-align:center}
}

/* roulang page: article */
:root {
      --green: #17352A;
      --green-deep: #101713;
      --green-2: #1B3A2E;
      --gold: #B4975A;
      --gold-2: #C2A36B;
      --bg: #F6F4EF;
      --bg-2: #F8F6F1;
      --ink: #1E231F;
      --muted: #6B726D;
      --line: #E3DCCF;
      --radius-lg: 20px;
      --radius-md: 12px;
      --radius-sm: 6px;
      --shadow: 0 4px 20px rgba(23,53,42,0.06);
      --shadow-lg: 0 12px 40px rgba(23,53,42,0.12);
      --font-serif: Georgia, "Songti SC", "SimSun", serif;
      --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      --ease: cubic-bezier(0.22, 1, 0.36, 1);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-sans);
      background: var(--bg);
      color: var(--ink);
      font-size: 16px;
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      color: var(--green);
      text-decoration: none;
      transition: color 0.3s var(--ease);
    }

    button {
      font-family: inherit;
      cursor: pointer;
    }

    input {
      font-family: inherit;
    }

    ul {
      list-style: none;
    }

    h1, h2, h3, h4, h5 {
      font-family: var(--font-serif);
      font-weight: 700;
      line-height: 1.3;
      color: var(--ink);
      letter-spacing: 0.01em;
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(23, 53, 42, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      height: 72px;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      gap: 24px;
    }

    .brand {
      flex-shrink: 0;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--gold);
      color: var(--green-deep);
      font-size: 20px;
      font-weight: 800;
      border-radius: 8px;
      border-bottom: 2px solid rgba(0, 0, 0, 0.15);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.1;
    }

    .brand-name {
      font-size: 19px;
      font-weight: 700;
      color: #F6F4EF;
      letter-spacing: 0.06em;
      font-family: var(--font-serif);
    }

    .brand-sub {
      font-size: 10px;
      color: rgba(255, 255, 255, 0.55);
      letter-spacing: 0.24em;
      font-weight: 600;
    }

    .mainnav {
      display: flex;
      gap: 28px;
    }

    .nav-link {
      position: relative;
      color: rgba(255, 255, 255, 0.78);
      font-size: 15px;
      font-weight: 500;
      padding: 8px 0;
      transition: color 0.3s var(--ease);
    }

    .nav-link::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 2px;
      width: 100%;
      height: 2px;
      background: var(--gold);
      transform: scaleX(0);
      transform-origin: right;
      transition: transform 0.35s var(--ease);
    }

    .nav-link:hover,
    .nav-link.is-active {
      color: #fff;
    }

    .nav-link:hover::after,
    .nav-link.is-active::after {
      transform: scaleX(1);
      transform-origin: left;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .search-box {
      display: flex;
      align-items: center;
      gap: 8px;
      height: 38px;
      padding: 0 12px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 6px;
      width: 220px;
      transition: width 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
    }

    .search-box:focus-within {
      width: 260px;
      border-color: var(--gold);
      box-shadow: 0 0 0 3px rgba(180, 151, 90, 0.15);
    }

    .search-box input {
      background: transparent;
      border: none;
      outline: none;
      color: #fff;
      font-size: 13px;
      width: 100%;
    }

    .search-box input::placeholder {
      color: rgba(255, 255, 255, 0.4);
    }

    .search-shortcut {
      font-size: 11px;
      color: rgba(255, 255, 255, 0.5);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 4px;
      padding: 1px 6px;
      line-height: 1.4;
      flex-shrink: 0;
    }

    .icon-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      color: rgba(255, 255, 255, 0.8);
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 6px;
      font-size: 15px;
      transition: all 0.3s var(--ease);
    }

    .icon-btn:hover {
      color: var(--gold);
      border-color: var(--gold);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 15px;
      font-weight: 600;
      border-radius: 6px;
      padding: 10px 22px;
      border: 1px solid transparent;
      transition: all 0.3s var(--ease);
      line-height: 1.4;
    }

    .btn-primary {
      background: var(--gold);
      color: var(--green-deep);
    }

    .btn-primary:hover {
      background: var(--gold-2);
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(180, 151, 90, 0.25);
    }

    .btn-outline {
      background: transparent;
      color: #fff;
      border-color: rgba(255, 255, 255, 0.35);
    }

    .btn-outline:hover {
      border-color: var(--gold);
      color: var(--gold);
      background: rgba(255, 255, 255, 0.03);
    }

    .btn-sm {
      padding: 8px 16px;
      font-size: 14px;
    }

    .nav-toggle {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 4px;
      width: 38px;
      height: 38px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 6px;
      padding: 8px;
    }

    .nav-toggle span {
      height: 2px;
      background: #fff;
      display: block;
      width: 18px;
      margin: 0 auto;
      transition: all 0.3s var(--ease);
    }

    .article-hero {
      position: relative;
      background:
        linear-gradient(135deg, rgba(16, 23, 20, 0.92) 0%, rgba(23, 53, 42, 0.86) 100%),
        url("/assets/images/backpic/back-2.png") center / cover no-repeat;
      padding: 96px 0 72px;
      color: #fff;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.55);
      margin-bottom: 28px;
    }

    .breadcrumb a {
      color: rgba(255, 255, 255, 0.7);
    }

    .breadcrumb a:hover {
      color: var(--gold);
    }

    .breadcrumb .sep {
      opacity: 0.4;
    }

    .breadcrumb .current {
      color: rgba(255, 255, 255, 0.88);
      max-width: 520px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .article-hero h1 {
      color: #fff;
      font-size: 48px;
      line-height: 1.25;
      max-width: 900px;
      margin: 18px 0 20px;
      letter-spacing: 0.02em;
    }

    .article-summary {
      max-width: 820px;
    }

    .article-summary p {
      display: -webkit-box;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 2;
      overflow: hidden;
      color: rgba(255, 255, 255, 0.75);
      font-size: 16px;
      line-height: 1.8;
    }

    .article-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-top: 28px;
    }

    .meta-item {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.7);
    }

    .meta-item i {
      color: var(--gold);
      font-size: 13px;
    }

    .meta-cat {
      display: inline-flex;
      align-items: center;
      height: 26px;
      padding: 0 12px;
      background: rgba(180, 151, 90, 0.16);
      border: 1px solid rgba(180, 151, 90, 0.45);
      color: #E6D3AC;
      font-size: 12px;
      border-radius: 999px;
      gap: 6px;
    }

    .article-section {
      padding: 72px 0 80px;
    }

    .article-main {
      max-width: 780px;
      margin: 0 auto;
      background: var(--bg-2);
      border: 1px solid rgba(0, 0, 0, 0.05);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      padding: 52px 56px;
    }

    .article-prose {
      width: 100%;
    }

    .article-prose p {
      font-size: 16px;
      line-height: 2;
      color: #2A2F2B;
      margin-bottom: 20px;
    }

    .article-prose h2 {
      font-size: 28px;
      margin: 48px 0 18px;
      padding-top: 8px;
      color: var(--green);
      letter-spacing: 0.02em;
    }

    .article-prose h3 {
      font-size: 21px;
      margin: 36px 0 14px;
      color: var(--green-2);
    }

    .article-prose ul,
    .article-prose ol {
      margin: 0 0 24px 22px;
      line-height: 1.9;
    }

    .article-prose ul li {
      list-style: disc;
    }

    .article-prose ol li {
      list-style: decimal;
    }

    .article-prose blockquote {
      margin: 32px 0;
      padding: 20px 28px;
      background: rgba(180, 151, 90, 0.08);
      border-left: 3px solid var(--gold);
      color: var(--muted);
      font-size: 16px;
      line-height: 1.9;
      border-radius: 0 var(--radius-md) var(--radius-md) 0;
    }

    .article-prose img {
      border-radius: 14px;
      margin: 28px 0;
      box-shadow: var(--shadow);
    }

    .article-prose table {
      width: 100%;
      border-collapse: collapse;
      margin: 28px 0;
      font-size: 15px;
      border: 1px solid rgba(0, 0, 0, 0.06);
      border-radius: var(--radius-md);
      overflow: hidden;
    }

    .article-prose table th,
    .article-prose table td {
      padding: 12px 16px;
      border: 1px solid rgba(0, 0, 0, 0.06);
      text-align: left;
    }

    .article-prose table th {
      background: var(--green);
      color: #fff;
      font-weight: 600;
    }

    .article-prose code {
      background: rgba(23, 53, 42, 0.08);
      border-radius: 4px;
      padding: 2px 6px;
      font-size: 14px;
    }

    .article-prose pre {
      background: var(--green-deep);
      color: #E6D3AC;
      padding: 20px 24px;
      border-radius: 12px;
      overflow-x: auto;
      line-height: 1.7;
      margin: 28px 0;
    }

    .article-prose pre code {
      background: transparent;
      color: inherit;
      padding: 0;
    }

    .not-found {
      text-align: center;
      padding: 80px 0;
      max-width: 780px;
      margin: 0 auto;
    }

    .not-found i {
      font-size: 48px;
      color: var(--gold);
      margin-bottom: 16px;
    }

    .not-found p {
      font-size: 20px;
      color: var(--ink);
      margin-bottom: 24px;
    }

    .not-found .btn {
      background: var(--green);
      color: #fff;
      padding: 12px 28px;
      border-radius: 6px;
    }

    .not-found .btn:hover {
      background: var(--green-2);
    }

    .related-section {
      padding: 72px 0 80px;
      background: var(--bg);
      border-top: 1px solid rgba(0, 0, 0, 0.04);
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 20px;
      margin-bottom: 36px;
    }

    .section-tag {
      display: inline-flex;
      align-items: center;
      height: 26px;
      padding: 0 12px;
      background: rgba(23, 53, 42, 0.08);
      border: 1px solid rgba(23, 53, 42, 0.12);
      color: var(--green);
      font-size: 12px;
      font-weight: 600;
      border-radius: 999px;
      letter-spacing: 0.06em;
    }

    .section-title {
      font-size: 34px;
      color: var(--green);
      margin-top: 10px;
    }

    .related-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
      max-width: 1060px;
      margin: 0 auto;
    }

    .related-card {
      display: grid;
      grid-template-columns: 280px 1fr;
      align-items: stretch;
      background: #fff;
      border: 1px solid rgba(0, 0, 0, 0.05);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
    }

    .related-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }

    .related-cover {
      position: relative;
      overflow: hidden;
      min-height: 160px;
    }

    .related-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s var(--ease);
    }

    .related-card:hover .related-cover img {
      transform: scale(1.04);
    }

    .related-body {
      padding: 24px 28px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      justify-content: center;
    }

    .related-tag {
      display: inline-flex;
      align-self: flex-start;
      align-items: center;
      height: 24px;
      padding: 0 10px;
      background: rgba(180, 151, 90, 0.12);
      border: 1px solid rgba(180, 151, 90, 0.3);
      color: #8A7038;
      font-size: 12px;
      border-radius: 999px;
    }

    .related-body h3 {
      font-family: var(--font-sans);
      font-size: 18px;
      font-weight: 600;
      line-height: 1.5;
      color: var(--ink);
      transition: color 0.3s var(--ease);
    }

    .related-card:hover .related-body h3 {
      color: var(--green);
    }

    .related-body p {
      font-size: 14px;
      color: var(--muted);
      line-height: 1.7;
      margin-bottom: 6px;
    }

    .related-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--green);
      transition: color 0.3s var(--ease);
    }

    .related-card:hover .related-link {
      color: var(--gold);
    }

    .related-footer {
      text-align: center;
      margin-top: 36px;
    }

    .related-footer a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 15px;
      font-weight: 600;
      color: var(--green);
      border-bottom: 1px solid rgba(23, 53, 42, 0.2);
      padding-bottom: 4px;
      transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
    }

    .related-footer a:hover {
      color: var(--gold);
      border-color: var(--gold);
    }

    .cta-section {
      padding: 96px 0;
      background:
        linear-gradient(135deg, rgba(16, 23, 20, 0.92), rgba(23, 53, 42, 0.88)),
        url("/assets/images/backpic/back-3.webp") center / cover no-repeat;
      position: relative;
    }

    .cta-inner {
      max-width: 720px;
      margin: 0 auto;
      text-align: center;
      color: #fff;
      position: relative;
      z-index: 1;
    }

    .cta-inner h2 {
      font-size: 38px;
      color: #fff;
      line-height: 1.3;
    }

    .cta-sub {
      margin-top: 14px;
      font-size: 16px;
      color: rgba(255, 255, 255, 0.7);
      line-height: 1.8;
    }

    .cta-buttons {
      display: flex;
      gap: 16px;
      justify-content: center;
      margin-top: 28px;
    }

    .cta-note {
      margin-top: 22px;
      font-size: 12px;
      color: rgba(255, 255, 255, 0.4);
    }

    .site-footer {
      background: var(--green-deep);
      color: rgba(255, 255, 255, 0.6);
      padding: 64px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.4fr;
      gap: 40px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-brand p {
      font-size: 14px;
      line-height: 1.8;
      margin-top: 14px;
      max-width: 300px;
      color: rgba(255, 255, 255, 0.55);
    }

    .footer-title {
      font-family: var(--font-sans);
      font-size: 14px;
      font-weight: 600;
      color: #fff;
      letter-spacing: 0.12em;
      margin-bottom: 16px;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a {
      color: rgba(255, 255, 255, 0.55);
      font-size: 14px;
      transition: all 0.3s var(--ease);
    }

    .footer-links a:hover {
      color: var(--gold);
      padding-left: 4px;
    }

    .footer-contact li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.55);
      margin-bottom: 10px;
    }

    .footer-contact i {
      color: var(--gold);
      width: 16px;
      text-align: center;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 24px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.4);
    }

    .icp {
      letter-spacing: 0.04em;
    }

    :focus-visible {
      outline: 2px solid var(--gold);
      outline-offset: 3px;
    }

    @media (max-width: 1024px) {
      .container {
        padding: 0 24px;
      }

      .header-actions .search-box {
        width: 170px;
      }

      .mainnav {
        gap: 20px;
      }

      .related-card {
        grid-template-columns: 220px 1fr;
      }

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

    @media (max-width: 768px) {
      .site-header {
        height: 64px;
      }

      .header-inner {
        height: 64px;
      }

      .mainnav {
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--green);
        flex-direction: column;
        gap: 0;
        padding: 12px 24px 20px;
        display: none;
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
      }

      .site-header.menu-open .mainnav {
        display: flex;
      }

      .nav-link {
        padding: 12px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      }

      .header-actions .search-box {
        display: none;
      }

      .nav-toggle {
        display: flex;
      }

      .article-hero {
        padding: 64px 0 48px;
      }

      .article-hero h1 {
        font-size: 36px;
      }

      .article-section {
        padding: 48px 0;
      }

      .article-main {
        padding: 32px 28px;
      }

      .related-card {
        grid-template-columns: 1fr;
      }

      .related-cover {
        aspect-ratio: 16 / 8;
        min-height: auto;
      }

      .cta-section {
        padding: 64px 0;
      }

      .cta-inner h2 {
        font-size: 30px;
      }

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

      .section-title {
        font-size: 28px;
      }
    }

    @media (max-width: 640px) {
      .container {
        padding: 0 18px;
      }

      .article-hero h1 {
        font-size: 30px;
      }

      .breadcrumb {
        font-size: 13px;
      }

      .article-meta {
        flex-direction: column;
        gap: 10px;
      }

      .article-main {
        padding: 24px 18px;
        border-radius: 14px;
      }

      .article-prose h2 {
        font-size: 23px;
      }

      .article-prose h3 {
        font-size: 19px;
      }

      .section-head {
        flex-direction: column;
        align-items: flex-start;
      }

      .related-body {
        padding: 20px;
      }

      .related-body h3 {
        font-size: 17px;
      }

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

      .cta-buttons .btn {
        width: 100%;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .footer-bottom {
        flex-direction: column;
        gap: 8px;
      }
    }

    @media (max-width: 520px) {
      .brand-sub {
        display: none;
      }

      .brand-name {
        font-size: 17px;
      }

      .brand-mark {
        width: 34px;
        height: 34px;
        font-size: 17px;
      }

      .article-hero h1 {
        font-size: 26px;
      }

      .article-summary p {
        -webkit-line-clamp: 3;
      }

      .article-main {
        padding: 20px 16px;
      }

      .related-cover {
        aspect-ratio: 16 / 9;
      }
    }

/* roulang page: category2 */
:root{
  --primary:#17352A;
  --primary-light:#1B3A2E;
  --primary-hover:#224A3B;
  --accent:#B4975A;
  --accent-light:#C2A36B;
  --accent-bg:rgba(180,151,90,.12);
  --bg:#F6F4EF;
  --bg-soft:#F8F6F1;
  --bg-dark:#101713;
  --text:#1E231F;
  --text-muted:#6B726D;
  --border:#E3DCCF;
  --border-dark:rgba(255,255,255,.08);
  --radius-lg:18px;
  --radius-md:10px;
  --radius-sm:5px;
  --shadow-sm:0 4px 20px rgba(23,53,42,.06);
  --shadow-md:0 12px 40px rgba(23,53,42,.12);
  --shadow-dark:0 20px 60px rgba(0,0,0,.25);
  --transition:cubic-bezier(.22,1,.36,1);
  --container-w:1280px;
  --font-serif:"Source Han Serif SC","Noto Serif SC","Songti SC",SimSun,serif;
  --font-sans:"Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .25s var(--transition)}
button{font:inherit;border:0;background:none;cursor:pointer}
input{font:inherit}
ul,ol{list-style:none}
.grid-container{max-width:var(--container-w);padding-left:24px;padding-right:24px}
.grid-container.grid-container-full{max-width:100%;padding:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:600;
  line-height:1;
  padding:14px 28px;
  border-radius:var(--radius-sm);
  transition:all .3s var(--transition);
  white-space:nowrap;
  position:relative;
}
.btn-primary{
  background:var(--primary);
  color:#F6F4EF;
  border:1px solid var(--primary);
}
.btn-primary:hover{
  background:var(--accent);
  border-color:var(--accent);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 8px 24px rgba(23,53,42,.18);
}
.btn-outline{
  background:transparent;
  color:var(--primary);
  border:1px solid var(--primary);
}
.btn-outline:hover{
  background:rgba(23,53,42,.06);
  border-color:var(--primary);
  transform:translateY(-1px);
}
.btn-light{
  background:#F6F4EF;
  color:var(--primary);
  border:1px solid #F6F4EF;
}
.btn-light:hover{
  background:var(--accent-light);
  border-color:var(--accent-light);
  color:#fff;
  transform:translateY(-1px);
}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-lg{padding:16px 36px;font-size:16px}
.btn:focus-visible,.icon-btn:focus-visible,.nav-toggle:focus-visible,a:focus-visible,.search-box input:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:1000;
  background:rgba(16,23,19,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:box-shadow .3s var(--transition), background .3s var(--transition);
}
.site-header.scrolled{
  background:rgba(16,23,19,.96);
  box-shadow:0 4px 24px rgba(0,0,0,.25);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  gap:24px;
}
.brand-logo{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:36px;
  height:36px;
  border-radius:8px;
  background:var(--accent);
  color:var(--primary);
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
}
.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.2;
}
.brand-name{
  font-family:var(--font-serif);
  font-size:18px;
  font-weight:700;
  color:#F6F4EF;
  letter-spacing:2px;
}
.brand-sub{
  font-size:10px;
  letter-spacing:3px;
  color:rgba(246,244,239,.6);
  text-transform:uppercase;
}
.mainnav{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-link{
  position:relative;
  padding:8px 14px;
  font-size:15px;
  font-weight:500;
  color:rgba(246,244,239,.78);
  border-radius:6px;
  transition:color .25s var(--transition);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .3s var(--transition);
}
.nav-link:hover{color:#F6F4EF}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--accent-light)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
}
.search-box{
  position:relative;
  display:flex;
  align-items:center;
}
.search-box input{
  width:200px;
  height:38px;
  border:1px solid rgba(246,244,239,.18);
  border-radius:8px;
  background:rgba(246,244,239,.08);
  color:#F6F4EF;
  font-size:13px;
  padding:0 42px 0 16px;
  transition:all .3s var(--transition);
}
.search-box input::placeholder{color:rgba(246,244,239,.45)}
.search-box input:focus{
  width:240px;
  outline:none;
  border-color:rgba(180,151,90,.55);
  background:rgba(246,244,239,.12);
  box-shadow:0 0 0 3px rgba(180,151,90,.15);
}
.search-shortcut{
  position:absolute;
  right:12px;
  top:50%;
  transform:translateY(-50%);
  font-size:12px;
  color:rgba(246,244,239,.5);
  border:1px solid rgba(246,244,239,.18);
  border-radius:4px;
  padding:1px 6px;
  pointer-events:none;
}
.icon-btn{
  width:38px;
  height:38px;
  border-radius:8px;
  display:flex;
  align-items:center;
  justify-content:center;
  color:rgba(246,244,239,.75);
  border:1px solid transparent;
  transition:all .25s var(--transition);
}
.icon-btn:hover{color:var(--accent-light);background:rgba(246,244,239,.08)}
.icon-btn i{font-size:16px}
.nav-toggle{display:none;width:40px;height:40px;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:20px;height:2px;background:#F6F4EF;border-radius:2px;transition:all .3s var(--transition)}
.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)}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;
  background:linear-gradient(135deg,rgba(16,23,19,.96),rgba(23,53,42,.88)),url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding:170px 0 90px;
  color:#F6F4EF;
  border-bottom:1px solid var(--border-dark);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  top:0;
  right:0;
  width:50%;
  height:100%;
  background:radial-gradient(ellipse at top right,rgba(180,151,90,.14),transparent 60%);
  pointer-events:none;
}
.page-hero .grid-container{position:relative;z-index:2}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(246,244,239,.55);
  margin-bottom:28px;
}
.breadcrumb a{color:rgba(246,244,239,.7)}
.breadcrumb a:hover{color:var(--accent-light)}
.breadcrumb i{font-size:10px;opacity:.6}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--accent-bg);
  border:1px solid rgba(180,151,90,.35);
  color:var(--accent-light);
  font-size:13px;
  font-weight:500;
  padding:5px 14px;
  border-radius:999px;
  margin-bottom:20px;
}
.page-hero h1{
  font-family:var(--font-serif);
  font-size:58px;
  font-weight:700;
  line-height:1.2;
  letter-spacing:2px;
  margin-bottom:16px;
  color:#F6F4EF;
}
.page-hero h1 span{color:var(--accent-light)}
.hero-sub{
  font-size:18px;
  font-weight:400;
  color:rgba(246,244,239,.85);
  max-width:520px;
  line-height:1.7;
  margin-bottom:14px;
}
.hero-desc{
  font-size:15px;
  color:rgba(246,244,239,.65);
  max-width:520px;
  line-height:1.9;
  margin-bottom:32px;
}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-note{
  margin-top:18px;
  font-size:13px;
  color:rgba(246,244,239,.45);
  display:flex;
  align-items:center;
  gap:6px;
}
.hero-visual{
  position:relative;
}
.hero-visual .hero-img{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-dark);
  border:1px solid rgba(255,255,255,.1);
}
.hero-visual .hero-img img{width:100%;height:420px;object-fit:cover}
.hero-visual .hero-img::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(16,23,19,.6),transparent 50%);
}
.hero-card{
  position:absolute;
  bottom:22px;
  left:22px;
  right:22px;
  background:rgba(16,23,19,.65);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.12);
  border-radius:14px;
  padding:16px 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  z-index:2;
}
.hero-card-info{display:flex;align-items:center;gap:12px}
.hero-card-icon{
  width:40px;height:40px;border-radius:10px;
  background:var(--accent);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;
  flex-shrink:0;
}
.hero-card-text strong{font-size:14px;color:#F6F4EF;display:block;line-height:1.4}
.hero-card-text span{font-size:12px;color:rgba(246,244,239,.65)}
.hero-card-link{color:var(--accent-light);font-size:14px;white-space:nowrap}
.hero-card-link:hover{color:#F6F4EF}

/* ---------- 数据条 ---------- */
.stats-section{
  background:var(--bg-soft);
  border-bottom:1px solid var(--border);
  padding:44px 0;
}
.stats-wrap{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat-item{
  text-align:center;
  padding:16px 8px;
}
.stat-num{
  font-family:var(--font-serif);
  font-size:40px;
  font-weight:700;
  color:var(--primary);
  line-height:1.2;
  letter-spacing:-1px;
}
.stat-label{font-size:14px;color:var(--text-muted);margin-top:6px}

/* ---------- 通用区块 ---------- */
.section{
  padding:92px 0;
  position:relative;
}
.section-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  background:var(--accent-bg);
  padding:5px 14px;
  border-radius:999px;
  margin-bottom:16px;
}
.section-title{
  font-family:var(--font-serif);
  font-size:36px;
  font-weight:700;
  color:var(--text);
  line-height:1.3;
  letter-spacing:1px;
}
.section-sub{
  font-size:15px;
  color:var(--text-muted);
  line-height:1.9;
  margin-top:14px;
  max-width:640px;
}

/* ---------- 核心能力区 ---------- */
.features-section{
  background:var(--bg);
}
.features-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.feature-item{
  background:var(--bg-soft);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  padding:28px;
  transition:all .35s var(--transition);
}
.feature-item:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}
.feature-icon{
  width:44px;
  height:44px;
  border-radius:10px;
  background:var(--primary);
  color:var(--accent-light);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:18px;
  margin-bottom:16px;
  transition:all .3s var(--transition);
}
.feature-item:hover .feature-icon{
  background:var(--accent);
  color:var(--primary);
}
.feature-item h3{
  font-family:var(--font-serif);
  font-size:19px;
  font-weight:700;
  color:var(--text);
  margin-bottom:8px;
}
.feature-item p{
  font-size:14px;
  color:var(--text-muted);
  line-height:1.8;
}
.sticky-wrap{
  position:sticky;
  top:120px;
}

/* ---------- 内容体系区 ---------- */
.system-section{
  background:var(--bg-soft);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.system-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.system-card{
  position:relative;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:all .35s var(--transition);
}
.system-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}
.system-card-img{
  position:relative;
  overflow:hidden;
  height:230px;
}
.system-card-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .6s var(--transition);
}
.system-card:hover .system-card-img img{transform:scale(1.05)}
.system-card-img::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(16,23,19,.25),transparent 50%);
}
.system-card-body{
  padding:24px 26px 28px;
}
.system-card-tag{
  display:inline-block;
  font-size:12px;
  font-weight:600;
  color:var(--primary);
  background:var(--accent-bg);
  border-radius:999px;
  padding:3px 12px;
  margin-bottom:12px;
}
.system-card h3{
  font-family:var(--font-serif);
  font-size:21px;
  font-weight:700;
  color:var(--text);
  margin-bottom:8px;
}
.system-card p{
  font-size:14px;
  color:var(--text-muted);
  line-height:1.8;
}
.system-card-meta{
  margin-top:16px;
  padding-top:16px;
  border-top:1px solid var(--border);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}
.system-card-meta span{
  font-size:13px;
  color:var(--text-muted);
  display:flex;
  align-items:center;
  gap:6px;
}
.system-card-meta span i{color:var(--accent)}
.text-link{
  font-size:13px;
  font-weight:600;
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  gap:4px;
  transition:all .25s var(--transition);
}
.text-link:hover{color:var(--accent);gap:8px}

/* ---------- 受众区 ---------- */
.audience-section{background:var(--bg)}
.audience-row{
  background:var(--bg-soft);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
}
.audience-media{
  position:relative;
  min-height:280px;
  overflow:hidden;
}
.audience-media img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}
.audience-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(16,23,19,.15),transparent 40%);
}
.audience-content{
  padding:40px 42px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.audience-content .section-tag{margin-bottom:10px}
.audience-content h3{
  font-family:var(--font-serif);
  font-size:26px;
  font-weight:700;
  color:var(--text);
  margin-bottom:10px;
}
.audience-content > p{
  font-size:15px;
  color:var(--text-muted);
  line-height:1.9;
  margin-bottom:18px;
}
.audience-list-item{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:8px 0;
  border-bottom:1px solid var(--border);
}
.audience-list-item:last-child{border-bottom:0}
.audience-list-item i{
  width:22px;
  height:22px;
  border-radius:50%;
  background:var(--accent-bg);
  color:var(--accent);
  font-size:11px;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
  margin-top:4px;
}
.audience-list-item span{font-size:14px;color:var(--text);line-height:1.7}

/* ---------- 流程区 ---------- */
.process-section{
  background:var(--bg-dark);
  color:#F6F4EF;
}
.process-section .section-title{color:#F6F4EF}
.process-section .section-sub{color:rgba(246,244,239,.6)}
.process-section .section-tag{background:var(--accent-bg);color:var(--accent-light)}
.process-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-top:48px;
}
.process-step{
  position:relative;
  padding:30px 22px 22px;
  border:1px solid var(--border-dark);
  border-radius:var(--radius-md);
  background:rgba(246,244,239,.04);
  transition:all .35s var(--transition);
}
.process-step:hover{
  background:rgba(180,151,90,.08);
  transform:translateY(-4px);
}
.step-num{
  font-family:var(--font-serif);
  font-size:42px;
  font-weight:700;
  color:var(--accent);
  opacity:.9;
  line-height:1;
  margin-bottom:16px;
}
.step-arrow{
  position:absolute;
  top:36px;
  right:-14px;
  z-index:2;
  color:var(--accent);
  font-size:16px;
  opacity:.5;
}
.process-step h3{
  font-size:16px;
  font-weight:600;
  color:#F6F4EF;
  margin-bottom:8px;
}
.process-step p{
  font-size:13px;
  color:rgba(246,244,239,.55);
  line-height:1.8;
}

/* ---------- FAQ ---------- */
.faq-section{background:var(--bg-soft)}
.faq-list{border-top:1px solid var(--border)}
.faq-item{
  border-bottom:1px solid var(--border);
  transition:background .25s var(--transition);
}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 8px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  transition:color .25s var(--transition);
  width:100%;
  text-align:left;
}
.faq-q:hover{color:var(--primary)}
.faq-q i{
  font-size:14px;
  color:var(--accent);
  transition:transform .3s var(--transition);
  flex-shrink:0;
}
.faq-item.open .faq-q{color:var(--primary)}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .4s var(--transition);
}
.faq-item.open .faq-a{max-height:280px}
.faq-a-inner{
  padding:0 8px 22px;
  font-size:14px;
  color:var(--text-muted);
  line-height:1.9;
  max-width:92%;
}

/* ---------- CTA ---------- */
.cta-section{
  background:linear-gradient(135deg,rgba(16,23,19,.96),rgba(23,53,42,.9)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:90px 0;
  text-align:center;
  color:#F6F4EF;
}
.cta-inner{max-width:680px;margin:0 auto}
.cta-inner h2{
  font-family:var(--font-serif);
  font-size:36px;
  font-weight:700;
  line-height:1.35;
  margin-bottom:14px;
}
.cta-inner p{
  font-size:15px;
  color:rgba(246,244,239,.65);
  margin-bottom:28px;
  line-height:1.9;
}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
.cta-note{
  margin-top:18px;
  font-size:12px;
  color:rgba(246,244,239,.4);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#0E1512;
  color:rgba(246,244,239,.7);
  padding:70px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:50px;
}
.footer-brand .brand-name{color:#F6F4EF}
.footer-brand p{
  font-size:14px;
  line-height:1.9;
  color:rgba(246,244,239,.55);
  margin-top:18px;
  max-width:340px;
}
.footer-title{
  font-size:15px;
  font-weight:600;
  color:#F6F4EF;
  margin-bottom:18px;
  letter-spacing:1px;
}
.footer-links li,.footer-contact li{margin-bottom:10px}
.footer-links a,.footer-contact li{
  font-size:14px;
  color:rgba(246,244,239,.55);
  transition:color .25s var(--transition);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.footer-links a:hover{color:var(--accent-light);padding-left:4px}
.footer-contact i{color:var(--accent);font-size:13px;width:18px}
.footer-bottom{
  border-top:1px solid var(--border-dark);
  padding:24px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(246,244,239,.4);
}
.icp{color:rgba(246,244,239,.35)}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .search-box input{width:150px}
  .search-box input:focus{width:180px}
  .mainnav{position:fixed;top:72px;left:0;right:0;background:rgba(16,23,19,.97);flex-direction:column;align-items:stretch;padding:16px 24px 24px;gap:4px;transform:translateY(-120%);transition:transform .35s var(--transition);box-shadow:0 20px 40px rgba(0,0,0,.2)}
  .mainnav.nav-open{transform:translateY(0)}
  .nav-link{padding:14px 16px;font-size:16px;border-radius:8px}
  .nav-link::after{display:none}
  .nav-toggle{display:flex}
  .stats-wrap{grid-template-columns:repeat(2,1fr)}
  .features-grid{grid-template-columns:1fr}
  .sticky-wrap{position:static}
  .system-grid{grid-template-columns:1fr}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .step-arrow{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .page-hero h1{font-size:44px}
}
@media screen and (max-width:640px){
  .grid-container{padding-left:16px;padding-right:16px}
  .page-hero{padding:130px 0 60px}
  .page-hero h1{font-size:34px;letter-spacing:1px}
  .hero-sub{font-size:16px}
  .hero-desc{font-size:14px}
  .hero-cta .btn{width:100%}
  .hero-visual .hero-img img{height:280px}
  .hero-card{left:14px;right:14px;bottom:14px;padding:14px}
  .stats-wrap{grid-template-columns:repeat(2,1fr);gap:12px}
  .stat-num{font-size:30px}
  .section{padding:60px 0}
  .section-title{font-size:28px}
  .section-sub{font-size:14px}
  .features-grid{gap:14px}
  .feature-item{padding:22px}
  .audience-content{padding:28px 22px}
  .audience-media{min-height:220px}
  .process-grid{grid-template-columns:1fr;gap:14px}
  .process-step{padding:24px 18px}
  .step-num{font-size:34px}
  .faq-a-inner{max-width:100%}
  .cta-section{padding:60px 0}
  .cta-inner h2{font-size:28px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{justify-content:center;text-align:center}
  .search-box{display:none}
  .header-actions .btn-sm{display:none}
}

/* roulang page: category3 */
:root {
  --primary: #17352A;
  --primary-dark: #101713;
  --primary-light: #1B3A2E;
  --accent: #B4975A;
  --accent-light: #C2A36B;
  --bg-warm: #F6F4EF;
  --bg-white: #F8F6F1;
  --text-dark: #1E231F;
  --text-muted: #6B726D;
  --border-color: #E3DCCF;
  --radius-lg: 18px;
  --radius-md: 10px;
  --radius-sm: 5px;
  --shadow-card: 0 4px 20px rgba(23,53,42,0.06);
  --shadow-hover: 0 12px 40px rgba(23,53,42,0.12);
  --transition: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  --font-serif: "Songti SC", "Noto Serif SC", "SimSun", serif;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); font-size: 16px; line-height: 1.9; color: var(--text-dark); background: var(--bg-warm); -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s ease, border-color 0.2s ease; }
a:hover { color: var(--accent); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button, input { font-family: inherit; font-size: inherit; border: none; background: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* ===== Header / Nav ===== */
.site-header { position: sticky; top: 0; z-index: 100; background: var(--primary-dark); border-bottom: 1px solid rgba(255,255,255,0.06); box-shadow: 0 4px 20px rgba(0,0,0,0.2); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { display: flex; align-items: center; flex-shrink: 0; }
.brand-logo { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 40px; height: 40px; border-radius: 8px; background: var(--accent); color: var(--primary-dark); font-family: var(--font-serif); font-weight: 700; font-size: 22px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-size: 18px; font-weight: 700; color: #F6F4EF; letter-spacing: 0.05em; }
.brand-sub { font-size: 10px; color: rgba(255,255,255,0.45); letter-spacing: 0.2em; font-weight: 400; }
.mainnav { display: flex; align-items: center; gap: 6px; margin-left: 40px; }
.nav-link { font-size: 14px; font-weight: 500; color: rgba(255,255,255,0.7); padding: 8px 16px; border-radius: 6px; position: relative; transition: color 0.25s ease, background 0.25s ease; }
.nav-link:hover { color: var(--accent-light); background: rgba(255,255,255,0.04); }
.nav-link.is-active { color: #fff; background: rgba(180,151,90,0.12); }
.nav-link.is-active::after { content: ""; position: absolute; bottom: 2px; left: 16px; right: 16px; height: 2px; background: var(--accent); border-radius: 2px; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.search-box { display: flex; align-items: center; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); border-radius: 8px; padding: 0 10px; height: 36px; width: 200px; transition: width 0.3s ease, border-color 0.3s ease; }
.search-box:focus-within { width: 240px; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(180,151,90,0.15); }
.search-box input { flex: 1; background: none; border: none; color: #fff; font-size: 13px; padding: 0 6px; outline: none; }
.search-box input::placeholder { color: rgba(255,255,255,0.4); }
.search-shortcut { font-size: 11px; color: rgba(255,255,255,0.35); background: rgba(255,255,255,0.1); border-radius: 4px; padding: 2px 6px; }
.icon-btn { width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6); font-size: 15px; transition: background 0.2s ease, color 0.2s ease; }
.icon-btn:hover { background: rgba(255,255,255,0.08); color: var(--accent-light); }
.btn { display: inline-flex; align-items: center; justify-content: center; font-weight: 600; border-radius: var(--radius-sm); padding: 10px 22px; font-size: 14px; cursor: pointer; border: 1px solid transparent; transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1); }
.btn-primary { background: var(--accent); color: var(--primary-dark); }
.btn-primary:hover { background: var(--accent-light); color: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(180,151,90,0.3); }
.btn-sm { padding: 7px 16px; font-size: 13px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 10px; }
.nav-toggle span { width: 20px; height: 2px; background: rgba(255,255,255,0.7); border-radius: 2px; transition: transform 0.3s ease, opacity 0.3s ease; }

/* ===== Page Hero ===== */
.cat-hero { position: relative; background: var(--primary-dark); padding: 80px 0 70px; overflow: hidden; }
.cat-hero::before { content: ""; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.25; }
.cat-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(16,23,19,0.95) 0%, rgba(16,23,19,0.7) 55%, rgba(16,23,19,0.3) 100%); }
.cat-hero-inner { position: relative; z-index: 2; }
.breadcrumb { font-size: 13px; color: rgba(255,255,255,0.5); margin-bottom: 24px; letter-spacing: 0.02em; }
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb span.sep { margin: 0 8px; color: rgba(255,255,255,0.3); }
.cat-hero-content { display: flex; flex-direction: column; gap: 22px; max-width: 720px; animation: fadeUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) both; }
.cat-hero h1 { font-family: var(--font-serif); font-size: 56px; font-weight: 700; color: #fff; line-height: 1.2; letter-spacing: 0.02em; margin: 0; }
.cat-hero-sub { font-size: 17px; color: rgba(255,255,255,0.7); line-height: 1.8; max-width: 600px; }
.cat-hero-meta { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 6px; }
.meta-chip { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: rgba(255,255,255,0.55); background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.08); padding: 4px 12px; border-radius: 999px; }
.meta-chip i { color: var(--accent-light); font-size: 11px; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }

/* ===== Section Common ===== */
.section { padding: 88px 0; }
.section-head { display: flex; flex-direction: column; gap: 10px; margin-bottom: 48px; }
.section-tag { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 600; color: var(--accent); letter-spacing: 0.1em; text-transform: uppercase; }
.section-tag::before { content: ""; width: 24px; height: 2px; background: var(--accent); border-radius: 2px; }
.section-title { font-family: var(--font-serif); font-size: 38px; font-weight: 700; color: var(--text-dark); line-height: 1.3; margin: 0; }
.section-desc { font-size: 15px; color: var(--text-muted); max-width: 540px; line-height: 1.8; }

/* ===== Data Capability ===== */
.capability-section { background: var(--bg-warm); }
.capability-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
.capability-layout { display: grid; grid-template-columns: 5fr 7fr; gap: 40px; align-items: start; }
.capability-left { position: sticky; top: 120px; display: flex; flex-direction: column; gap: 20px; align-items: flex-start; }
.capability-card { background: var(--bg-white); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 28px; display: flex; gap: 18px; align-items: flex-start; box-shadow: var(--shadow-card); transition: transform 0.3s cubic-bezier(0.22,1,0.36,1), box-shadow 0.3s ease; }
.capability-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.cap-icon { width: 44px; height: 44px; border-radius: 10px; background: var(--primary); color: var(--accent-light); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; transition: background 0.3s ease, color 0.3s ease; }
.capability-card:hover .cap-icon { background: var(--accent); color: var(--primary-dark); }
.cap-card-body h3 { font-size: 17px; font-weight: 600; margin-bottom: 6px; color: var(--text-dark); }
.cap-card-body p { font-size: 14px; color: var(--text-muted); line-height: 1.65; margin: 0; }

/* ===== Coverage ===== */
.coverage-section { background: var(--bg-white); border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.coverage-grid { display: flex; flex-direction: column; gap: 28px; }
.coverage-card { display: flex; align-items: stretch; background: var(--bg-warm); border: 1px solid var(--border-color); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); transition: box-shadow 0.35s ease, transform 0.35s ease; }
.coverage-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.coverage-card:nth-child(even) { flex-direction: row-reverse; }
.coverage-media { flex: 0 0 46%; min-height: 260px; background: url('/assets/images/coverpic/cover-3.webp') center/cover no-repeat; position: relative; }
.coverage-card:nth-child(2) .coverage-media { background-image: url('/assets/images/coverpic/cover-5.webp'); }
.coverage-card:nth-child(3) .coverage-media { background-image: url('/assets/images/coverpic/cover-1.webp'); }
.coverage-media::after { content: ""; position: absolute; inset: 0; background: rgba(23,53,42,0.15); }
.coverage-content { flex: 1; padding: 36px; display: flex; flex-direction: column; justify-content: center; gap: 14px; }
.coverage-tag { font-size: 12px; font-weight: 600; color: var(--accent); letter-spacing: 0.06em; }
.coverage-content h3 { font-size: 24px; font-weight: 600; color: var(--text-dark); line-height: 1.35; margin: 0; }
.coverage-content p { font-size: 14px; color: var(--text-muted); line-height: 1.75; margin: 0; max-width: 420px; }
.coverage-link { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; color: var(--primary); cursor: pointer; margin-top: 6px; }
.coverage-link i { font-size: 12px; transition: transform 0.25s ease; }
.coverage-link:hover i { transform: translateX(4px); }

/* ===== Workflow ===== */
.workflow-section { background: var(--primary-dark); position: relative; overflow: hidden; }
.workflow-section::before { content: ""; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.1; }
.workflow-section .container { position: relative; z-index: 1; }
.workflow-section .section-title { color: #fff; }
.workflow-section .section-desc { color: rgba(255,255,255,0.55); }
.workflow-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 42px; }
.workflow-step { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius-lg); padding: 30px 22px; transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s ease; }
.workflow-step:hover { border-color: rgba(180,151,90,0.4); background: rgba(255,255,255,0.07); transform: translateY(-4px); }
.step-num { font-family: var(--font-serif); font-size: 36px; font-weight: 700; color: var(--accent); line-height: 1; margin-bottom: 16px; display: block; }
.workflow-step h3 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 8px; }
.workflow-step p { font-size: 13px; color: rgba(255,255,255,0.5); line-height: 1.65; margin: 0; }
.workflow-arrow { position: absolute; top: 50%; right: -14px; color: rgba(180,151,90,0.3); font-size: 18px; transform: translateY(-50%); display: none; }

/* ===== Metrics ===== */
.metrics-section { background: var(--bg-warm); border-bottom: 1px solid var(--border-color); }
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.metric-item { text-align: center; padding: 30px 10px; border-left: 1px solid var(--border-color); }
.metric-item:first-child { border-left: none; }
.metric-num { font-family: var(--font-serif); font-size: 52px; font-weight: 700; color: var(--accent); line-height: 1.1; position: relative; display: inline-block; }
.metric-num::after { content: attr(data-suffix); font-size: 24px; margin-left: 2px; }
.metric-label { font-size: 14px; color: var(--text-muted); margin-top: 10px; letter-spacing: 0.03em; }
.metric-desc { font-size: 12px; color: rgba(0,0,0,0.35); margin-top: 4px; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-white); }
.faq-layout { display: grid; grid-template-columns: 4fr 8fr; gap: 40px; align-items: start; }
.faq-head { position: sticky; top: 120px; display: flex; flex-direction: column; align-items: flex-start; gap: 18px; }
.faq-list { display: flex; flex-direction: column; }
.faq-item { border-bottom: 1px solid var(--border-color); }
.faq-item:last-child { border-bottom: none; }
.faq-question { width: 100%; text-align: left; padding: 22px 0; font-size: 16px; font-weight: 600; color: var(--text-dark); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; transition: color 0.2s ease; }
.faq-question:hover { color: var(--accent); }
.faq-question i { font-size: 14px; color: var(--accent); transition: transform 0.3s ease; flex-shrink: 0; }
.faq-item.active .faq-question { color: var(--primary); }
.faq-item.active .faq-question i { transform: rotate(45deg); }
.faq-answer { display: none; padding: 0 30px 24px 0; font-size: 14px; color: var(--text-muted); line-height: 1.8; }

/* ===== CTA ===== */
.cta-section { background: var(--primary-dark); padding: 100px 0; position: relative; overflow: hidden; }
.cta-section::before { content: ""; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat; opacity: 0.12; }
.cta-inner { position: relative; z-index: 1; text-align: center; max-width: 680px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: 20px; }
.cta-title { font-family: var(--font-serif); font-size: 40px; font-weight: 700; color: #fff; line-height: 1.25; }
.cta-sub { font-size: 16px; color: rgba(255,255,255,0.6); line-height: 1.75; max-width: 500px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; margin-top: 14px; }
.btn-outline-light { background: transparent; border: 1px solid rgba(255,255,255,0.4); color: #fff; }
.btn-outline-light:hover { background: rgba(255,255,255,0.08); border-color: var(--accent-light); color: var(--accent-light); }
.cta-note { font-size: 12px; color: rgba(255,255,255,0.3); margin-top: 16px; }

/* ===== Footer ===== */
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,0.6); font-size: 14px; line-height: 1.8; border-top: 1px solid rgba(255,255,255,0.05); }
.footer-grid { display: grid; grid-template-columns: 5fr 2fr 2fr 2.5fr; gap: 40px; padding: 56px 0 44px; }
.footer-brand .brand-logo { margin-bottom: 18px; }
.footer-brand p { font-size: 13px; color: rgba(255,255,255,0.45); line-height: 1.8; max-width: 320px; margin-top: 14px; }
.footer-title { font-size: 13px; font-weight: 600; color: #fff; margin-bottom: 18px; letter-spacing: 0.04em; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 13px; color: rgba(255,255,255,0.5); transition: color 0.2s ease, padding-left 0.2s ease; }
.footer-links a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-contact li { display: flex; align-items: center; gap: 10px; font-size: 13px; color: rgba(255,255,255,0.5); margin-bottom: 12px; }
.footer-contact i { color: var(--accent); font-size: 13px; width: 16px; text-align: center; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding: 22px 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; font-size: 12px; color: rgba(255,255,255,0.3); }
.footer-bottom .icp { font-size: 12px; }

/* ===== Responsive ===== */
@media screen and (max-width: 1024px) {
  .mainnav { margin-left: 20px; }
  .search-box { width: 160px; }
  .search-box:focus-within { width: 200px; }
  .capability-layout { grid-template-columns: 1fr; gap: 24px; }
  .capability-left { position: static; }
  .coverage-media { flex: 0 0 40%; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-head { position: static; }
  .workflow-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
}
@media screen and (max-width: 768px) {
  .site-header { height: auto; }
  .header-inner { flex-wrap: wrap; padding: 12px 0; height: auto; }
  .mainnav { display: none; width: 100%; flex-direction: column; gap: 4px; order: 4; margin-left: 0; padding: 8px 0 12px; }
  .mainnav.open { display: flex; }
  .nav-link { display: block; width: 100%; padding: 10px 12px; border-radius: 8px; }
  .header-actions { margin-left: auto; }
  .nav-toggle { display: flex; }
  .search-box { width: 130px; }
  .search-box:focus-within { width: 160px; }
  .cat-hero { padding: 56px 0 50px; }
  .cat-hero h1 { font-size: 40px; }
  .cat-hero-sub { font-size: 15px; }
  .section { padding: 60px 0; }
  .section-title { font-size: 28px; }
  .capability-grid { grid-template-columns: 1fr; }
  .coverage-card, .coverage-card:nth-child(even) { flex-direction: column; }
  .coverage-media { flex: 0 0 200px; }
  .coverage-content { padding: 24px; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .metric-item { border-left: none; border-top: 1px solid var(--border-color); }
  .metric-item:nth-child(-n+2) { border-top: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .workflow-steps { grid-template-columns: 1fr; }
  .cta-title { font-size: 30px; }
  .cta-section { padding: 70px 0; }
}
@media screen and (max-width: 520px) {
  .container { padding: 0 16px; }
  .brand-name { font-size: 16px; }
  .brand-mark { width: 36px; height: 36px; font-size: 19px; }
  .search-box { display: none; }
  .header-actions .btn-sm { padding: 6px 12px; font-size: 12px; }
  .cat-hero h1 { font-size: 34px; }
  .cat-hero-meta { flex-direction: column; gap: 8px; }
  .section-title { font-size: 26px; }
  .capability-card { padding: 20px; }
  .coverage-media { flex: 0 0 170px; }
  .metrics-grid { grid-template-columns: 1fr; }
  .metric-item { border-top: 1px solid var(--border-color); }
  .metric-item:first-child { border-top: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .faq-question { font-size: 15px; padding: 18px 0; }
  .cta-actions { flex-direction: column; width: 100%; }
  .cta-actions .btn { width: 100%; }
}