/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --panda: #14161A;
  --panda-soft: #1D2026;
  --bg: #F7F7F4;
  --white: #FFFFFF;
  --bamboo: #3E9B6E;
  --bamboo-dark: #2F7A56;
  --bamboo-light: rgba(62,155,110,0.12);
  --gray-text: #5B6166;
  --gray-sub: #8A9096;
  --line: #E6E7E3;
  --dark-sub: #A6AAA8;
  --gold: #D9A441;
  --r-lg: 24px;
  --r-md: 16px;
  --r-sm: 12px;
  --r-pill: 999px;
  --shadow: 0 2px 8px rgba(20,22,26,0.04), 0 8px 24px rgba(20,22,26,0.06);
  --shadow-lg: 0 4px 12px rgba(20,22,26,0.08), 0 20px 48px rgba(20,22,26,0.10);
  --trans: 0.25s ease;
  --space: 96px;
}
/* ===== 基础 Reset ===== */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC','Microsoft YaHei','Source Han Sans CN','Noto Sans CJK SC',sans-serif;
  font-size: 16px;
  line-height: 1.85;
  color: var(--panda);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  padding-bottom: 76px;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: all var(--trans); }
button, input { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
/* ===== 容器 ===== */
.grid-container { max-width: 1280px; padding-left: 20px; padding-right: 20px; }
/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 28px;
  height: 48px;
  border-radius: var(--r-pill);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: all var(--trans);
  cursor: pointer;
  white-space: nowrap;
}
.btn:focus-visible {
  outline: 3px solid rgba(62,155,110,0.35);
  outline-offset: 2px;
}
.btn-primary { background: var(--bamboo); color: #fff; }
.btn-primary:hover { background: var(--bamboo-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 24px rgba(62,155,110,0.35); }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,0.5); }
.btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: #fff; color: #fff; transform: translateY(-2px); }
.btn-outline-dark { background: transparent; color: var(--panda); border-color: var(--line); }
.btn-outline-dark:hover { border-color: var(--panda); background: var(--panda); color: #fff; transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--panda); }
.btn-white:hover { background: #f0f1ee; box-shadow: 0 0 0 4px rgba(255,255,255,0.15); transform: scale(1.02); }
/* ===== 区块标题 ===== */
.section-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 40px;
}
.section-num {
  font-family: 'Inter','Helvetica Neue',Arial,sans-serif;
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 200;
  letter-spacing: -0.02em;
  color: var(--line);
  line-height: 1;
  margin-top: 4px;
  min-width: 3ch;
}
.section-head-inner { display: flex; flex-direction: column; gap: 4px; }
.section-line {
  width: 34px;
  height: 4px;
  background: var(--bamboo);
  border-radius: var(--r-pill);
  margin-bottom: 4px;
}
.section-head h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--panda);
}
.section-sub {
  font-size: 0.925rem;
  color: var(--gray-text);
  line-height: 1.6;
}
/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(247,247,244,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  height: 64px;
  display: flex;
  align-items: center;
}
.site-header .grid-container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.nav-brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-brand svg { width: 34px; height: 34px; }
.nav-brand-text {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--panda);
  line-height: 1.2;
}
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-text);
  padding: 8px 18px;
  border-radius: var(--r-pill);
  position: relative;
}
.nav-links a:hover { color: var(--panda); background: rgba(0,0,0,0.04); }
.nav-links a.active { color: var(--bamboo); font-weight: 600; }
.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 0;
  width: 20px;
  height: 2px;
  background: var(--bamboo);
  border-radius: var(--r-pill);
}
.nav-cta { margin-left: 12px; height: 40px; padding: 0 22px; font-size: 14px; }
/* ===== Hero ===== */
.hero {
  background: var(--panda);
  color: #fff;
  padding: 80px 0 100px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  right: -120px;
  top: -60px;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Inter',sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bamboo);
  margin-bottom: 24px;
}
.hero-kicker::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--bamboo);
  display: inline-block;
}
.hero-title {
  font-size: clamp(2.75rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.hero-title .t-white {
  background: #fff;
  color: var(--panda);
  padding: 0 14px;
  border-radius: 8px;
  display: inline-block;
  margin-right: 6px;
}
.hero-title .t-bamboo {
  background: var(--bamboo);
  color: #fff;
  padding: 0 14px;
  border-radius: 8px;
  display: inline-block;
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--dark-sub);
  letter-spacing: 0.04em;
  margin-bottom: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.hero-sub span { white-space: nowrap; }
.hero-sub .slash { color: var(--bamboo); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 48px; }
.hero-meta {
  display: flex;
  gap: 36px;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 28px;
  flex-wrap: wrap;
}
.hero-meta .meta-item { display: flex; flex-direction: column; }
.hero-meta strong {
  font-family: 'Inter',sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}
.hero-meta span { font-size: 0.8rem; color: var(--dark-sub); }
.hero-visual { display: flex; justify-content: center; align-items: center; }
.phone-frame {
  width: 300px;
  height: 540px;
  background: #272B33;
  border-radius: var(--r-lg);
  padding: 10px;
  position: relative;
  box-shadow: 0 30px 60px rgba(0,0,0,0.45);
  border: 1px solid rgba(255,255,255,0.08);
}
.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  background: #1a1d23;
}
.phone-screen img { width: 100%; height: 100%; object-fit: cover; opacity: 0.85; }
.phone-live {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(6px);
  padding: 4px 12px;
  border-radius: var(--r-pill);
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.live-dot {
  width: 7px;
  height: 7px;
  background: var(--bamboo);
  border-radius: 50%;
  animation: pulse-live 1.6s ease infinite;
}
@keyframes pulse-live { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(0.8); } }
.phone-time {
  position: absolute;
  bottom: 14px;
  right: 14px;
  background: rgba(0,0,0,0.55);
  padding: 4px 10px;
  border-radius: var(--r-pill);
  font-size: 0.75rem;
  color: #fff;
  font-family: 'Inter',sans-serif;
}
.phone-label {
  position: absolute;
  bottom: 14px;
  left: 14px;
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
}
.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 44px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: var(--r-pill);
  display: flex;
  justify-content: center;
  padding-top: 8px;
}
.hero-scroll::after {
  content: '';
  width: 4px;
  height: 8px;
  background: var(--bamboo);
  border-radius: var(--r-pill);
  animation: scroll-bounce 1.8s ease infinite;
}
@keyframes scroll-bounce {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}
/* ===== 爆款卡片 ===== */
.section-pad { padding: var(--space) 0; }
.section-pad-tight { padding: 48px 0; }
.hot-cards .card {
  background: var(--white);
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transition: transform var(--trans), box-shadow var(--trans);
  position: relative;
}
.hot-cards .card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card-cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3/4;
  background: #ecedea;
}
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.hot-cards .card:hover .card-cover img { transform: scale(1.03); }
.card-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(20,22,26,0.75) 100%);
}
.hot-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  background: linear-gradient(135deg, var(--bamboo), #4caf7f);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--r-pill);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.hot-duration {
  position: absolute;
  bottom: 12px;
  right: 12px;
  z-index: 2;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 0.7rem;
  padding: 2px 10px;
  border-radius: var(--r-pill);
  font-family: 'Inter',sans-serif;
}
.hot-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
  padding: 20px 16px 14px;
}
.hot-title { color: #fff; font-size: 0.95rem; font-weight: 600; line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 4px; }
.hot-meta { display: flex; justify-content: space-between; align-items: center; }
.hot-trend { color: rgba(255,255,255,0.75); font-size: 0.78rem; }
.hot-trend strong { color: var(--gold); font-family: 'Inter',sans-serif; font-weight: 600; }
.hot-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%) scale(0.8);
  width: 50px;
  height: 50px;
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  z-index: 3;
  opacity: 0;
  transition: all 0.35s ease;
}
.hot-play svg { width: 20px; height: 20px; margin-left: 2px; }
.hot-cards .card:hover .hot-play { opacity: 1; transform: translate(-50%,-50%) scale(1); }
/* ===== 种草清单 ===== */
.grass-grid .feature-card,
.grass-grid .mini-card {
  background: var(--white);
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transition: transform var(--trans), box-shadow var(--trans);
}
.grass-grid .feature-card:hover,
.grass-grid .mini-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.feature-card .fc-img { aspect-ratio: 16/9; overflow: hidden; position: relative; }
.feature-card .fc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.feature-card:hover .fc-img img { transform: scale(1.03); }
.badge-cat {
  background: var(--bamboo-light);
  color: var(--bamboo-dark);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: var(--r-pill);
  display: inline-flex;
  align-items: center;
  letter-spacing: 0.02em;
  width: fit-content;
}
.fc-body { padding: 20px 24px 24px; }
.fc-body h3 { font-size: 1.15rem; font-weight: 700; line-height: 1.45; color: var(--panda); margin: 10px 0 8px; }
.fc-body p { font-size: 0.875rem; color: var(--gray-text); line-height: 1.7; margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.fc-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--bamboo);
  margin-top: 14px;
}
.fc-link .arr { transition: transform var(--trans); }
.fc-link:hover .arr { transform: translateX(4px); }
.mini-card { display: flex; align-items: stretch; gap: 0; padding: 0; }
.mini-card .mc-img { width: 100px; flex-shrink: 0; min-height: 110px; overflow: hidden; }
.mini-card .mc-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.mini-card:hover .mc-img img { transform: scale(1.05); }
.mc-body { padding: 14px 16px; display: flex; flex-direction: column; justify-content: center; }
.mc-body h4 { font-size: 0.95rem; font-weight: 700; line-height: 1.4; color: var(--panda); margin: 6px 0 6px; }
.mc-body p { font-size: 0.78rem; color: var(--gray-text); line-height: 1.5; margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
/* ===== 最新动态 ===== */
.dynamic-section { background: var(--bg); }
.dynamic-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.dynamic-item {
  display: grid;
  grid-template-columns: 130px 120px 1fr 1.6fr 40px;
  align-items: center;
  gap: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 18px 24px;
  transition: all var(--trans);
}
.dynamic-item:hover { background: #fafaf8; box-shadow: var(--shadow); border-color: #d8dad5; transform: translateX(2px); }
.d-time {
  font-family: 'Inter',sans-serif;
  font-size: 0.8rem;
  color: var(--gray-sub);
  font-weight: 500;
  white-space: nowrap;
}
.d-cat {
  background: var(--bamboo-light);
  color: var(--bamboo-dark);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: var(--r-pill);
  justify-self: start;
  white-space: nowrap;
}
.d-title { font-size: 0.95rem; font-weight: 700; line-height: 1.5; color: var(--panda); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.d-summary {
  font-size: 0.8rem;
  color: var(--gray-text);
  line-height: 1.5;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.d-arrow {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--panda);
  font-size: 0.9rem;
  transition: all var(--trans);
}
.dynamic-item:hover .d-arrow { background: var(--bamboo); color: #fff; border-color: var(--bamboo); transform: translateX(2px); }
.cms-empty {
  background: var(--bg);
  border: 2px dashed #d5d7d2;
  border-radius: var(--r-md);
  height: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--gray-sub);
}
.cms-empty-icon { font-size: 2rem; line-height: 1; opacity: 0.5; }
.cms-empty p { font-size: 0.9rem; }
/* ===== 评论条 ===== */
.review-track {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 8px 4px 20px;
  scrollbar-width: none;
}
.review-track::-webkit-scrollbar { display: none; }
.review-card {
  flex: 0 0 300px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: all var(--trans);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.review-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.review-head { display: flex; align-items: center; gap: 12px; }
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.av-1 { background: linear-gradient(135deg,#3E9B6E,#2F7A56); }
.av-2 { background: linear-gradient(135deg,#5B6166,#353941); }
.av-3 { background: linear-gradient(135deg,#D9A441,#c08a2d); }
.av-4 { background: linear-gradient(135deg,#7B8FA3,#5e7387); }
.review-name { font-size: 0.875rem; font-weight: 600; color: var(--panda); line-height: 1.2; }
.review-role { font-size: 0.72rem; color: var(--gray-sub); }
.review-stars { color: var(--gold); font-size: 0.8rem; letter-spacing: 2px; margin-left: auto; }
.review-text { font-size: 0.8rem; color: var(--gray-text); line-height: 1.7; margin: 0; }
/* ===== CTA ===== */
.cta-banner {
  background: var(--bamboo);
  color: #fff;
  padding: 84px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  pointer-events: none;
}
.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -120px;
  left: 10%;
  width: 260px;
  height: 260px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  pointer-events: none;
}
.cta-kicker {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.75;
  margin-bottom: 14px;
  display: inline-block;
}
.cta-banner h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.cta-banner p {
  font-size: 0.95rem;
  opacity: 0.85;
  max-width: 480px;
  margin: 0 auto 32px;
  position: relative;
  z-index: 1;
}
.cta-actions { display: flex; justify-content: center; gap: 14px; position: relative; z-index: 1; flex-wrap: wrap; }
/* ===== FAQ ===== */
.faq-list { max-width: 920px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 0;
  box-shadow: 0 2px 4px rgba(20,22,26,0.02);
  transition: box-shadow var(--trans);
}
.faq-item.open { box-shadow: var(--shadow); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--panda);
  line-height: 1.5;
  user-select: none;
}
.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bamboo-light);
  color: var(--bamboo-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 400;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}
.faq-item.open .faq-icon { transform: rotate(135deg); background: var(--bamboo); color: #fff; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-a-inner { padding: 0 24px 20px; font-size: 0.875rem; color: var(--gray-text); line-height: 1.8; }
.faq-item.open .faq-a { max-height: 300px; }
/* ===== 页脚 ===== */
.site-footer {
  background: var(--panda);
  color: var(--dark-sub);
  padding: 64px 0 32px;
  border-top: 1px solid rgba(255,255,255,0.04);
}
.site-footer .footer-grid { display: grid; grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer-brand { display: flex; flex-direction: column; gap: 16px; }
.footer-brand .nav-brand { color: #fff; }
.footer-brand .nav-brand-text { color: #fff; }
.footer-brand p { font-size: 0.85rem; line-height: 1.7; max-width: 260px; margin: 0; }
.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 18px;
  opacity: 0.75;
}
.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--dark-sub);
  padding: 5px 0;
}
.footer-col a:hover { color: var(--bamboo); padding-left: 4px; }
.footer-contact { font-size: 0.875rem; line-height: 2; }
.footer-contact a { color: var(--dark-sub); display: inline; padding: 0; }
.footer-contact a:hover { color: var(--bamboo); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  flex-wrap: wrap;
  gap: 8px;
}
/* ===== 移动端底部Tab ===== */
.mobile-tabbar {
  display: flex;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  z-index: 1100;
  box-shadow: 0 -4px 20px rgba(20,22,26,0.04);
  padding-bottom: env(safe-area-inset-bottom);
}
.mobile-tabbar .tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  color: var(--gray-sub);
  font-size: 11px;
  font-weight: 500;
  position: relative;
  transition: color 0.25s ease;
}
.mobile-tabbar .tab-item svg { width: 22px; height: 22px; }
.mobile-tabbar .tab-item.active { color: var(--bamboo); }
.mobile-tabbar .tab-item.active svg { transform: translateY(-1px); transition: transform 0.25s ease; }
.mobile-tabbar .tab-item.active::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px;
  height: 2px;
  background: var(--bamboo);
  border-radius: var(--r-pill);
}
/* ===== 响应式 ===== */
@media screen and (min-width: 640px) {
  .mobile-tabbar { display: none; }
  body { padding-bottom: 0; }
}
@media screen and (max-width: 1023.98px) {
  .site-header .nav-links { display: none; }
  .nav-cta { display: none; }
  .hero { padding: 56px 0 72px; }
  .hero-visual { margin-top: 40px; }
  .section-pad { padding: 64px 0; }
  .dynamic-item {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "title time"
      "cat time"
      "summary time";
    gap: 6px 12px;
    padding: 16px;
  }
  .d-time { grid-area: time; align-self: start; text-align: right; }
  .d-cat { grid-area: cat; }
  .d-title { grid-area: title; font-size: 0.9rem; white-space: normal; }
  .d-summary { grid-area: summary; font-size: 0.78rem; white-space: normal; }
  .d-arrow { display: none; }
  .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media screen and (max-width: 639.98px) {
  .hero-title { font-size: 2.4rem; }
  .hero-title .t-white, .hero-title .t-bamboo { padding: 0 8px; }
  .hero-meta { gap: 24px; }
  .phone-frame { width: 250px; height: 450px; }
  .section-head { margin-bottom: 24px; }
  .section-num { font-size: 1.6rem; }
  .mini-card { flex-direction: column; }
  .mini-card .mc-img { width: 100%; min-height: 100px; }
  .footer-grid { grid-template-columns: 1fr !important; gap: 28px !important; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .cta-banner { padding: 56px 0; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; max-width: 320px; }
  .faq-q { padding: 16px; font-size: 0.875rem; }
  .faq-a-inner { padding: 0 16px 16px; }
  .review-card { flex-basis: 260px; }
}
@media screen and (min-width: 1024px) {
  .mobile-tabbar { display: none; }
}
/* ===== 动效 ===== */
.reveal { opacity: 1; transform: translateY(0); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal-pending { opacity: 0; transform: translateY(16px); }
.reveal.revealed { opacity: 1; transform: translateY(0); }

/* roulang page: article */
:root {
  --panda-black: #14161A;
  --panda-bg: #F7F7F4;
  --panda-white: #FFFFFF;
  --panda-green: #3E9B6E;
  --panda-green-hover: #2F7A56;
  --panda-gray: #5B6166;
  --panda-border: #E6E7E3;
  --panda-deep-gray: #A6AAA8;
  --panda-gold: #D9A441;
  --radius-card: 16px;
  --radius-img: 12px;
  --radius-btn: 999px;
  --shadow-default: 0 2px 8px rgba(20,22,26,0.04), 0 8px 24px rgba(20,22,26,0.06);
  --shadow-hover: 0 4px 12px rgba(20,22,26,0.08), 0 20px 48px rgba(20,22,26,0.10);
  --transition: 0.25s ease;
  --font-cn: 'PingFang SC','Microsoft YaHei','Source Han Sans CN','Noto Sans CJK SC',sans-serif;
  --font-en: 'Inter','Helvetica Neue',Arial;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  font-size: 1rem;
  line-height: 1.6;
  background: var(--panda-bg);
  color: var(--panda-black);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--panda-black); text-decoration: none; transition: color var(--transition); }
button, input, textarea, select { font-family: inherit; font-size: inherit; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; }

.grid-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary { background: var(--panda-green); color: #fff; }
.btn-primary:hover { background: var(--panda-green-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(62,155,110,0.25); }
.btn-dark { background: var(--panda-black); color: #fff; }
.btn-dark:hover { background: var(--panda-green); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--panda-black); border: 1px solid var(--panda-border); }
.btn-outline:hover { border-color: var(--panda-green); color: var(--panda-green); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--panda-black); }
.btn-light:hover { background: #eef3ef; transform: scale(1.02); box-shadow: 0 8px 30px rgba(255,255,255,0.15); }
.btn-ghost-light { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.4); }
.btn-ghost-light:hover { background: rgba(255,255,255,0.1); border-color: #fff; transform: scale(1.02); }
.btn-lg { padding: 16px 40px; font-size: 1.05rem; }

/* ===== 徽章 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: var(--radius-btn);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.4;
}
.badge-green { background: #dcefe4; color: var(--panda-green-hover); }
.badge-dark { background: var(--panda-black); color: #fff; }
.badge-gold { background: #f6ecd7; color: #a4761e; }

/* ===== 区块标题 ===== */
.section-heading {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}
.section-num {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 300;
  color: var(--panda-deep-gray);
  letter-spacing: -0.02em;
}
.section-heading h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--panda-black);
}
.section-heading::before {
  content: '';
  width: 8px;
  height: 28px;
  background: var(--panda-green);
  border-radius: 4px;
}
.section-heading .heading-sub {
  font-size: 0.9rem;
  color: var(--panda-gray);
  font-weight: 400;
  margin-left: auto;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 64px;
  background: rgba(247,247,244,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--panda-border);
}
.site-header .grid-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.nav-brand svg { width: 36px; height: 36px; border-radius: 10px; flex-shrink: 0; }
.nav-brand-text {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--panda-black);
  white-space: nowrap;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--panda-gray);
  padding: 6px 2px;
  position: relative;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--panda-black); }
.nav-links a.active { color: var(--panda-green); font-weight: 600; }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--panda-green);
  border-radius: 2px;
}
.nav-cta { margin-left: 8px; }

/* ===== 移动端底部Tab ===== */
.mobile-tabbar {
  display: none;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 24px 0 8px;
  font-size: 0.875rem;
  color: var(--panda-gray);
}
.breadcrumb a { color: var(--panda-gray); }
.breadcrumb a:hover { color: var(--panda-green); }
.breadcrumb-divider { color: var(--panda-deep-gray); font-size: 0.75rem; }
.breadcrumb-current {
  color: var(--panda-black);
  font-weight: 500;
  max-width: 260px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===== 文章主体 ===== */
.article-main {
  padding: 32px 0 24px;
}
.article-container {
  max-width: 980px;
  margin: 0 auto;
}
.article-detail {
  max-width: 780px;
  margin: 0 auto;
  padding: 24px 0 48px;
}
.article-title {
  font-size: clamp(1.9rem, 3.8vw, 2.75rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid var(--panda-border);
  border-bottom: 1px solid var(--panda-border);
  font-size: 0.875rem;
  color: var(--panda-gray);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-label { color: var(--panda-deep-gray); }
.meta-divider {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--panda-border);
}

/* ===== 正文 ===== */
.article-body {
  padding-top: 36px;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--panda-black);
}
.article-body p { margin-bottom: 20px; color: var(--panda-gray); }
.article-body h2 {
  font-size: 1.55rem;
  font-weight: 700;
  margin: 40px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--panda-green);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 28px 0 12px;
  line-height: 1.4;
}
.article-body h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 20px 0 8px;
}
.article-body img {
  border-radius: var(--radius-img);
  margin: 24px 0;
  box-shadow: var(--shadow-default);
}
.article-body figcaption {
  font-size: 0.85rem;
  color: var(--panda-deep-gray);
  text-align: center;
  margin-top: -16px;
  margin-bottom: 24px;
}
.article-body blockquote {
  border-left: 4px solid var(--panda-green);
  background: #eff1ec;
  padding: 18px 22px;
  border-radius: 0 12px 12px 0;
  margin: 28px 0;
  color: var(--panda-gray);
  font-style: normal;
}
.article-body blockquote p { margin-bottom: 0; color: inherit; }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 0.95rem;
}
.article-body th {
  background: #eff1ec;
  font-weight: 600;
  text-align: left;
  padding: 12px 14px;
  border: 1px solid var(--panda-border);
}
.article-body td {
  padding: 12px 14px;
  border: 1px solid var(--panda-border);
  color: var(--panda-gray);
}
.article-body ul,
.article-body ol {
  margin: 20px 0;
  padding-left: 24px;
  color: var(--panda-gray);
}
.article-body li { margin-bottom: 8px; }
.article-body a { color: var(--panda-green-hover); text-decoration: underline; }
.article-body a:hover { color: var(--panda-green); }

/* ===== 相关推荐 ===== */
.related-section {
  padding: 64px 0 96px;
  background: var(--panda-white);
  border-top: 1px solid var(--panda-border);
  border-bottom: 1px solid var(--panda-border);
}
.related-grid { margin-top: 8px; }
.related-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--panda-bg);
  border: 1px solid var(--panda-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all var(--transition);
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}
.related-img {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.related-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-card:hover .related-img img { transform: scale(1.03); }
.related-img .badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255,255,255,0.92);
  color: var(--panda-green-hover);
}
.related-info { padding: 20px 20px 24px; flex: 1; }
.related-info h3 {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-info p {
  font-size: 0.875rem;
  color: var(--panda-gray);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-nav {
  max-width: 780px;
  margin: 40px auto 0;
  text-align: center;
}

/* ===== 文章空态 ===== */
.article-empty-section { padding: 120px 20px 140px; }
.article-empty {
  max-width: 520px;
  margin: 0 auto;
  text-align: center;
  background: var(--panda-white);
  border: 1px dashed var(--panda-border);
  border-radius: var(--radius-card);
  padding: 60px 40px;
}
.empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--panda-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--panda-deep-gray);
}
.article-empty p {
  font-size: 1.05rem;
  color: var(--panda-gray);
  margin-bottom: 24px;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--panda-black);
  padding: 80px 0;
  color: #fff;
  text-align: center;
}
.cta-inner { max-width: 800px; margin: 0 auto; }
.cta-kicker {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--panda-green);
  margin-bottom: 16px;
  border: 1px solid rgba(62,155,110,0.4);
  padding: 6px 18px;
  border-radius: 999px;
}
.cta-inner h2 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}
.cta-inner h2 .text-green { color: var(--panda-green); }
.cta-inner p {
  font-size: 1rem;
  color: var(--panda-deep-gray);
  margin-bottom: 36px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--panda-black);
  color: #fff;
  padding: 64px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand p {
  color: var(--panda-deep-gray);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-top: 16px;
}
.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.footer-col a {
  display: block;
  color: var(--panda-deep-gray);
  font-size: 0.9rem;
  margin-bottom: 10px;
}
.footer-col a:hover { color: var(--panda-green); }
.footer-contact span {
  display: block;
  color: var(--panda-deep-gray);
  font-size: 0.9rem;
  margin-bottom: 10px;
}
.footer-contact a { display: inline; color: var(--panda-deep-gray); }
.footer-contact a:hover { color: var(--panda-green); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--panda-deep-gray);
}
.footer-bottom span:last-child { color: var(--panda-deep-gray); }

/* ===== 滚动渐显 ===== */
.reveal { transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal-hidden { opacity: 0; transform: translateY(16px); }
.reveal-visible { opacity: 1; transform: translateY(0); }

/* ===== 响应式 ===== */
@media (max-width: 1023.98px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-brand-text { font-size: 1.05rem; }
  .mobile-tabbar {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--panda-border);
    z-index: 1000;
    align-items: stretch;
    padding-bottom: env(safe-area-inset-bottom);
  }
  .tab-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    color: var(--panda-deep-gray);
    font-size: 0.6875rem;
    font-weight: 500;
    transition: color var(--transition);
    position: relative;
  }
  .tab-item svg { width: 22px; height: 22px; }
  .tab-item:hover { color: var(--panda-black); }
  .tab-item.active { color: var(--panda-green); }
  .tab-item.active::before {
    content: '';
    position: absolute;
    top: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--panda-green);
  }
  body { padding-bottom: 60px; }
}

@media (max-width: 639.98px) {
  .grid-container { padding: 0 16px; }
  .article-main { padding: 16px 0 8px; }
  .article-detail { padding: 16px 0 32px; }
  .article-title { font-size: 1.6rem; margin-bottom: 16px; }
  .article-meta { gap: 12px; padding: 14px 0; font-size: 0.8rem; }
  .meta-divider { display: none; }
  .article-body { padding-top: 24px; font-size: 1rem; }
  .article-body h2 { font-size: 1.35rem; }
  .article-body h3 { font-size: 1.1rem; }
  .related-section { padding: 48px 0 64px; }
  .cta-section { padding: 56px 0; }
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; max-width: 300px; }
  .section-heading { margin-bottom: 28px; }
  .section-num { font-size: 1.5rem; }
  .section-heading h2 { font-size: 1.5rem; }
  .breadcrumb { padding: 16px 0 4px; font-size: 0.8rem; }
  .breadcrumb-current { max-width: 140px; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
  .article-nav { margin-top: 28px; }
  .article-empty { padding: 40px 20px; }
}

@media (max-width: 519.98px) {
  .related-grid .cell { margin-bottom: 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
}

/* roulang page: category2 */
:root {
      --bg-body: #F7F7F4;
      --bg-white: #FFFFFF;
      --bg-dark: #14161A;
      --bg-muted: #EDEFEA;
      --panda-black: #14161A;
      --panda-white: #F7F7F4;
      --bamboo-green: #3E9B6E;
      --bamboo-green-hover: #2F7A56;
      --bamboo-light: #E4F2EA;
      --text-body: #2A2D31;
      --text-gray: #5B6166;
      --text-dark-secondary: #A6AAA8;
      --border-color: #E6E7E3;
      --gold: #D9A441;
      --font-cn: 'PingFang SC','Microsoft YaHei','Source Han Sans CN','Noto Sans CJK SC',sans-serif;
      --font-en: Inter,'Helvetica Neue',Arial,sans-serif;
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-pill: 999px;
      --shadow-default: 0 2px 8px rgba(20,22,26,0.04), 0 8px 24px rgba(20,22,26,0.06);
      --shadow-hover: 0 4px 12px rgba(20,22,26,0.08), 0 20px 48px rgba(20,22,26,0.10);
      --container-max: 1280px;
      --space-section: 96px;
      --space-section-mobile: 64px;
      --transition-default: 0.25s ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-cn);
      background: var(--bg-body);
      color: var(--text-body);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    body.no-scroll {
      overflow: hidden;
    }
    img {
      max-width: 100%;
      display: block;
      object-fit: cover;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color var(--transition-default);
    }
    button {
      border: none;
      background: none;
      font-family: inherit;
      cursor: pointer;
    }
    input, textarea {
      font-family: inherit;
    }
    .grid-container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(247,247,244,0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      height: 64px;
    }
    .site-header .grid-container {
      height: 64px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      white-space: nowrap;
    }
    .nav-brand svg {
      width: 36px;
      height: 36px;
      flex-shrink: 0;
      border-radius: 10px;
    }
    .nav-brand-text {
      font-size: 1.125rem;
      font-weight: 800;
      letter-spacing: -0.01em;
      color: var(--panda-black);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-links a {
      position: relative;
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-gray);
      padding: 6px 0;
      transition: color var(--transition-default);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--bamboo-green);
      border-radius: 2px;
      transition: width var(--transition-default);
    }
    .nav-links a:hover {
      color: var(--bamboo-green);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .nav-links a.active {
      color: var(--bamboo-green);
      font-weight: 600;
    }
    .nav-links a.active::after {
      width: 100%;
    }
    .nav-cta {
      white-space: nowrap;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-pill);
      font-weight: 600;
      font-size: 0.9375rem;
      padding: 10px 24px;
      transition: all var(--transition-default);
      outline: none;
      line-height: 1.4;
      cursor: pointer;
      border: 1px solid transparent;
    }
    .btn:focus-visible {
      outline: 3px solid rgba(62,155,110,0.35);
      outline-offset: 2px;
    }
    .btn-primary {
      background: var(--bamboo-green);
      color: #fff;
    }
    .btn-primary:hover {
      background: var(--bamboo-green-hover);
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(62,155,110,0.25);
    }
    .btn-primary:active {
      transform: translateY(0);
    }
    .btn-dark {
      background: var(--panda-black);
      color: #fff;
    }
    .btn-dark:hover {
      background: var(--bamboo-green);
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(20,22,26,0.2);
    }
    .btn-light {
      background: #fff;
      color: var(--panda-black);
    }
    .btn-light:hover {
      background: var(--bg-body);
      transform: translateY(-1px);
      box-shadow: 0 8px 24px rgba(255,255,255,0.15);
    }
    .btn-outline-light {
      background: transparent;
      color: #fff;
      border-color: rgba(255,255,255,0.5);
    }
    .btn-outline-light:hover {
      background: rgba(255,255,255,0.1);
      border-color: #fff;
    }

    .section {
      padding: var(--space-section) 0;
    }

    .section-heading {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 44px;
    }
    .section-heading .section-num {
      font-family: var(--font-en);
      font-size: 3rem;
      font-weight: 100;
      line-height: 1;
      color: #C9CCC6;
      letter-spacing: -0.04em;
      min-width: 56px;
    }
    .section-heading .heading-text {
      flex: 1;
    }
    .section-heading .heading-text h2 {
      font-size: clamp(1.75rem, 3vw, 2.5rem);
      font-weight: 700;
      line-height: 1.2;
      color: var(--panda-black);
      margin-bottom: 8px;
    }
    .section-heading .heading-text .heading-bar {
      display: inline-block;
      width: 8px;
      height: 28px;
      background: var(--bamboo-green);
      border-radius: 4px;
      margin-right: 4px;
      vertical-align: -4px;
    }
    .section-heading .heading-text p {
      color: var(--text-gray);
      font-size: 1rem;
      line-height: 1.7;
      max-width: 640px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      padding: 3px 10px;
      border-radius: var(--radius-pill);
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.02em;
      background: var(--bamboo-light);
      color: var(--bamboo-green-hover);
      white-space: nowrap;
    }
    .badge-gold {
      background: rgba(217,164,65,0.15);
      color: #B07E1D;
    }
    .badge-dark {
      background: var(--panda-black);
      color: #fff;
    }

    .text-muted {
      color: var(--text-gray);
    }
    .text-small {
      font-size: 0.875rem;
    }

    .banner-hero {
      position: relative;
      background: var(--panda-black) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      padding: 88px 0 72px;
      color: #fff;
      overflow: hidden;
    }
    .banner-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(20,22,26,0.93) 0%, rgba(20,22,26,0.72) 55%, rgba(20,22,26,0.35) 100%);
      z-index: 1;
    }
    .banner-hero .grid-container {
      position: relative;
      z-index: 2;
    }
    .banner-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(62,155,110,0.2);
      border: 1px solid rgba(62,155,110,0.5);
      color: #86D6AE;
      font-size: 0.8125rem;
      font-weight: 600;
      letter-spacing: 0.04em;
      padding: 6px 16px;
      border-radius: var(--radius-pill);
      margin-bottom: 22px;
    }
    .banner-hero h1 {
      font-size: clamp(2.5rem, 5vw, 3.75rem);
      font-weight: 800;
      line-height: 1.1;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
    }
    .banner-hero .banner-desc {
      font-size: 1.0625rem;
      color: rgba(255,255,255,0.85);
      max-width: 620px;
      margin-bottom: 28px;
      line-height: 1.8;
    }
    .banner-stats {
      display: flex;
      gap: 36px;
      margin-top: 36px;
      flex-wrap: wrap;
    }
    .banner-stats .stat-item {
      display: flex;
      flex-direction: column;
      gap: 2px;
    }
    .banner-stats .stat-item strong {
      font-family: var(--font-en);
      font-size: 1.75rem;
      font-weight: 800;
      color: #fff;
    }
    .banner-stats .stat-item span {
      font-size: 0.8125rem;
      color: var(--text-dark-secondary);
      letter-spacing: 0.02em;
    }

    .featured-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-default);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: transform var(--transition-default), box-shadow var(--transition-default);
    }
    .featured-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .featured-card .card-media {
      position: relative;
      aspect-ratio: 16/9;
      overflow: hidden;
    }
    .featured-card .card-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .featured-card:hover .card-media img {
      transform: scale(1.03);
    }
    .featured-card .card-media .badge-position {
      position: absolute;
      top: 16px;
      left: 16px;
    }
    .featured-card .card-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .featured-card .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--panda-black);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .featured-card .card-excerpt {
      color: var(--text-gray);
      font-size: 0.9375rem;
      line-height: 1.75;
      flex: 1;
      margin-bottom: 16px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .card-meta {
      display: flex;
      align-items: center;
      gap: 16px;
      font-size: 0.8125rem;
      color: var(--text-gray);
    }
    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--bamboo-green);
      font-weight: 600;
      font-size: 0.875rem;
      transition: gap var(--transition-default);
    }
    .card-link:hover {
      gap: 10px;
    }

    .grid-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-default);
      overflow: hidden;
      transition: transform var(--transition-default), box-shadow var(--transition-default);
      display: flex;
      flex-direction: column;
    }
    .grid-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .grid-card .card-media {
      position: relative;
      aspect-ratio: 4/3;
      overflow: hidden;
    }
    .grid-card .card-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .grid-card:hover .card-media img {
      transform: scale(1.03);
    }
    .grid-card .card-media .badge-position {
      position: absolute;
      top: 14px;
      left: 14px;
    }
    .grid-card .card-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .grid-card .card-title {
      font-size: 1.0625rem;
      font-weight: 700;
      color: var(--panda-black);
      margin-bottom: 8px;
      line-height: 1.45;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .grid-card .card-excerpt {
      color: var(--text-gray);
      font-size: 0.875rem;
      line-height: 1.7;
      flex: 1;
      margin-bottom: 14px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .steps-section {
      background: var(--panda-black);
      color: #fff;
    }
    .steps-section .section-heading h2 {
      color: #fff;
    }
    .steps-section .section-heading .heading-text p {
      color: var(--text-dark-secondary);
    }
    .step-item {
      border: 1px solid rgba(255,255,255,0.12);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      height: 100%;
      background: rgba(255,255,255,0.03);
      transition: background var(--transition-default), transform var(--transition-default);
    }
    .step-item:hover {
      background: rgba(255,255,255,0.07);
      transform: translateY(-4px);
    }
    .step-num {
      font-family: var(--font-en);
      font-size: 2.25rem;
      font-weight: 700;
      color: var(--bamboo-green);
      margin-bottom: 12px;
      display: block;
      line-height: 1.2;
    }
    .step-item h3 {
      font-size: 1.125rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: #fff;
      line-height: 1.4;
    }
    .step-item p {
      color: var(--text-dark-secondary);
      font-size: 0.9375rem;
      line-height: 1.75;
      margin-bottom: 0;
    }

    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 22px 24px;
      margin-bottom: 14px;
      transition: box-shadow var(--transition-default);
    }
    .faq-item:hover {
      box-shadow: var(--shadow-default);
    }
    .faq-item .faq-question-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      cursor: pointer;
      width: 100%;
      text-align: left;
      padding: 0;
    }
    .faq-item .faq-question {
      font-size: 1rem;
      font-weight: 700;
      color: var(--panda-black);
      flex: 1;
      line-height: 1.5;
      background: none;
      border: none;
      text-align: left;
      cursor: pointer;
      padding: 0;
      font-family: inherit;
    }
    .faq-item .faq-question:focus-visible {
      outline: 3px solid rgba(62,155,110,0.3);
      border-radius: 4px;
    }
    .faq-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--bg-muted);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      font-weight: 400;
      color: var(--text-gray);
      transition: transform var(--transition-default), background var(--transition-default), color var(--transition-default);
      flex-shrink: 0;
      line-height: 1;
      position: relative;
    }
    .faq-icon::before {
      content: '+';
      font-size: 1.125rem;
      transition: transform var(--transition-default);
      display: block;
    }
    .faq-item.open .faq-icon {
      background: var(--bamboo-green);
      color: #fff;
    }
    .faq-item.open .faq-icon::before {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 20px;
    }
    .faq-item.open .faq-answer {
      padding-top: 16px;
      padding-bottom: 0;
    }
    .faq-answer-inner {
      color: var(--text-gray);
      font-size: 0.9375rem;
      line-height: 1.75;
      padding-top: 4px;
      border-top: 1px solid var(--border-color);
    }

    .cta-section {
      background: var(--bamboo-green);
      padding: 64px 0;
      text-align: center;
      margin-top: var(--space-section);
    }
    .cta-section h2 {
      font-size: clamp(1.75rem, 3vw, 2.5rem);
      font-weight: 800;
      color: #fff;
      line-height: 1.2;
      margin-bottom: 14px;
    }
    .cta-section p {
      color: rgba(255,255,255,0.9);
      font-size: 1rem;
      max-width: 540px;
      margin: 0 auto 28px;
      line-height: 1.7;
    }
    .cta-section .btn-light {
      font-size: 1rem;
      padding: 14px 36px;
    }

    .mobile-tabs {
      display: none;
    }

    .site-footer {
      background: var(--panda-black);
      color: var(--text-dark-secondary);
      padding: 64px 0 32px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 14px;
      font-weight: 800;
      font-size: 1.125rem;
      color: #fff;
    }
    .footer-brand p {
      color: var(--text-dark-secondary);
      font-size: 0.875rem;
      line-height: 1.75;
      max-width: 300px;
    }
    .footer-col h4 {
      color: #fff;
      font-size: 0.9375rem;
      font-weight: 600;
      margin-bottom: 16px;
      letter-spacing: 0.02em;
    }
    .footer-col a {
      display: block;
      color: var(--text-dark-secondary);
      font-size: 0.875rem;
      line-height: 2.1;
      transition: color var(--transition-default);
    }
    .footer-col a:hover {
      color: var(--bamboo-green);
    }
    .footer-contact span {
      display: block;
      font-size: 0.875rem;
      line-height: 2.1;
    }
    .footer-contact a {
      display: inline;
      color: var(--text-dark-secondary);
      font-size: 0.875rem;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 0.8125rem;
    }

    .container-narrow {
      max-width: 780px;
      margin: 0 auto;
    }
    .container-medium {
      max-width: 900px;
      margin: 0 auto;
    }

    .card-stats {
      display: flex;
      gap: 24px;
      flex-wrap: wrap;
    }
    .stat-chip {
      display: flex;
      flex-direction: column;
      gap: 2px;
      padding: 12px 20px;
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-default);
      min-width: 100px;
    }
    .stat-chip strong {
      font-family: var(--font-en);
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--panda-black);
    }
    .stat-chip span {
      font-size: 0.75rem;
      color: var(--text-gray);
      letter-spacing: 0.04em;
    }

    .mobile-tab-placeholder {
      display: none;
    }

    @media (max-width: 1024px) {
      .section {
        padding: var(--space-section-mobile) 0;
      }
      .nav-links {
        gap: 18px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }

    @media (max-width: 768px) {
      .site-header {
        height: 60px;
      }
      .site-header .grid-container {
        height: 60px;
      }
      .nav-links {
        display: none;
      }
      .nav-cta {
        display: none;
      }
      .nav-brand svg {
        width: 32px;
        height: 32px;
      }
      .nav-brand-text {
        font-size: 1rem;
      }

      .banner-hero {
        padding: 56px 0 48px;
      }
      .banner-stats {
        gap: 20px;
      }
      .banner-stats .stat-item strong {
        font-size: 1.375rem;
      }

      .section-heading {
        margin-bottom: 32px;
      }
      .section-heading .section-num {
        font-size: 2.25rem;
        min-width: 40px;
      }

      .faq-item {
        padding: 18px;
      }

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

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

      .mobile-tabs {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 60px;
        background: rgba(255,255,255,0.95);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-top: 1px solid var(--border-color);
        z-index: 200;
        padding-bottom: env(safe-area-inset-bottom);
      }
      .mobile-tab {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 3px;
        color: var(--text-gray);
        font-size: 0.75rem;
        position: relative;
        transition: color var(--transition-default);
      }
      .mobile-tab svg {
        width: 20px;
        height: 20px;
        stroke: currentColor;
        fill: none;
        stroke-width: 2;
        stroke-linecap: round;
        stroke-linejoin: round;
        transition: transform 0.2s ease;
      }
      .mobile-tab.active {
        color: var(--bamboo-green);
        font-weight: 600;
      }
      .mobile-tab.active svg {
        transform: translateY(-2px);
      }
      .mobile-tab.active::before {
        content: '';
        position: absolute;
        top: 4px;
        width: 4px;
        height: 4px;
        border-radius: 50%;
        background: var(--bamboo-green);
      }
      body {
        padding-bottom: 60px;
      }
    }

    @media (min-width: 769px) {
      .mobile-tabs {
        display: none !important;
      }
      body {
        padding-bottom: 0;
      }
    }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
    :root {
      --ink: #14161A;
      --paper: #F7F7F4;
      --white: #FFFFFF;
      --green: #3E9B6E;
      --green-dark: #2F7A56;
      --gray: #5B6166;
      --line: #E6E7E3;
      --gray-dark: #A6AAA8;
      --gold: #D9A441;
      --radius: 16px;
      --radius-sm: 12px;
      --radius-lg: 24px;
      --shadow: 0 2px 8px rgba(20,22,26,0.04), 0 8px 24px rgba(20,22,26,0.06);
      --shadow-hover: 0 4px 12px rgba(20,22,26,0.08), 0 20px 48px rgba(20,22,26,0.10);
      --ease: 0.25s ease;
    }

    /* ===== 基础 Reset ===== */
    *, *::before, *::after {
      box-sizing: border-box;
    }
    * {
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }
    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans CN', 'Noto Sans CJK SC', sans-serif;
      background: var(--paper);
      color: var(--ink);
      font-size: 16px;
      line-height: 1.6;
      padding-bottom: 80px;
    }
    img {
      max-width: 100%;
      display: block;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    button {
      font-family: inherit;
      border: none;
      background: none;
      cursor: pointer;
    }
    ul, ol {
      list-style: none;
    }
    h1, h2, h3, h4 {
      font-weight: 700;
      line-height: 1.25;
      color: var(--ink);
    }

    /* ===== 容器 ===== */
    .grid-container {
      max-width: 1280px;
      width: 100%;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .grid-margin-x {
      margin-left: -10px;
      margin-right: -10px;
    }
    .grid-margin-x > .cell {
      margin-right: 20px;
      margin-bottom: 24px;
    }

    /* ===== 通用组件 ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 48px;
      padding: 0 32px;
      border-radius: 999px;
      font-size: 0.95rem;
      font-weight: 700;
      letter-spacing: 0.01em;
      background: var(--green);
      color: var(--white);
      border: 1px solid transparent;
      transition: background var(--ease), color var(--ease), transform var(--ease), box-shadow var(--ease), border-color var(--ease);
      cursor: pointer;
    }
    .btn:hover {
      background: var(--green-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(62,155,110,0.28);
    }
    .btn:active {
      transform: translateY(0);
    }
    .btn:focus-visible {
      outline: 3px solid rgba(62,155,110,0.35);
      outline-offset: 2px;
    }
    .btn-lg {
      height: 56px;
      padding: 0 52px;
      font-size: 1.05rem;
    }
    .btn-light {
      background: var(--white);
      color: var(--ink);
    }
    .btn-light:hover {
      background: var(--white);
      box-shadow: 0 10px 32px rgba(255,255,255,0.18);
      transform: translateY(-2px) scale(1.01);
    }

    .tag {
      display: inline-flex;
      align-items: center;
      height: 28px;
      padding: 0 14px;
      border-radius: 999px;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }
    .tag-green {
      background: rgba(62,155,110,0.12);
      color: var(--green-dark);
    }
    .tag-dark {
      background: rgba(20,22,26,0.08);
      color: var(--ink);
    }

    .link-arrow {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--green-dark);
      font-weight: 700;
      font-size: 0.9rem;
      transition: gap var(--ease), color var(--ease);
    }
    .link-arrow::after {
      content: '→';
      transition: transform var(--ease);
    }
    .link-arrow:hover {
      color: var(--green);
      gap: 10px;
    }
    .link-arrow:hover::after {
      transform: translateX(3px);
    }

    /* ===== 顶部导航 ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      height: 64px;
      background: rgba(247,247,244,0.9);
      -webkit-backdrop-filter: blur(12px);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--line);
    }
    .site-header .grid-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 64px;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .nav-brand svg {
      width: 34px;
      height: 34px;
      flex-shrink: 0;
    }
    .nav-brand-text {
      font-size: 1.1rem;
      font-weight: 800;
      letter-spacing: -0.01em;
      color: var(--ink);
      white-space: nowrap;
    }
    .nav-links {
      display: flex;
      gap: 32px;
      align-items: center;
    }
    .nav-links a {
      position: relative;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--gray);
      padding: 22px 0 20px;
      transition: color var(--ease);
      white-space: nowrap;
    }
    .nav-links a:hover {
      color: var(--green);
    }
    .nav-links a.active {
      color: var(--green);
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      height: 2px;
      border-radius: 2px;
      background: var(--green);
    }
    .nav-cta {
      height: 40px;
      padding: 0 28px;
      font-size: 0.9rem;
    }

    /* ===== 分类 Banner ===== */
    .category-banner {
      position: relative;
      padding: 130px 0 100px;
      background: linear-gradient(80deg, rgba(20,22,26,0.94) 0%, rgba(20,22,26,0.78) 50%, rgba(20,22,26,0.50) 100%), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
      color: var(--white);
      overflow: hidden;
    }
    .category-banner .breadcrumb {
      animation: slideDown 0.6s ease both;
    }
    .category-banner .banner-title {
      animation: slideDown 0.6s ease 0.1s both;
    }
    .category-banner .banner-desc {
      animation: slideDown 0.6s ease 0.2s both;
    }
    .category-banner .btn {
      animation: slideDown 0.6s ease 0.28s both;
    }
    @keyframes slideDown {
      from {
        opacity: 0;
        transform: translateY(-12px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.875rem;
      color: var(--gray-dark);
      margin-bottom: 40px;
    }
    .breadcrumb a {
      color: rgba(255,255,255,0.65);
      transition: color var(--ease);
    }
    .breadcrumb a:hover {
      color: var(--green);
    }
    .breadcrumb .sep {
      color: rgba(255,255,255,0.35);
    }
    .breadcrumb .current {
      color: rgba(255,255,255,0.9);
    }
    .banner-title {
      font-size: clamp(2.75rem, 6vw, 4.5rem);
      font-weight: 800;
      color: var(--white);
      line-height: 1.1;
      margin-bottom: 16px;
    }
    .banner-desc {
      font-size: 1.1rem;
      line-height: 1.8;
      color: rgba(255,255,255,0.75);
      max-width: 720px;
      margin-bottom: 36px;
    }

    /* ===== Section 标题 ===== */
    .section-heading {
      margin-bottom: 48px;
    }
    .section-num {
      display: block;
      font-family: Inter, 'Helvetica Neue', Arial, sans-serif;
      font-size: 3.5rem;
      font-weight: 200;
      line-height: 0.9;
      color: rgba(20,22,26,0.10);
      margin-bottom: 8px;
    }
    .section-heading h2 {
      font-size: clamp(1.75rem, 3vw, 2.5rem);
      font-weight: 700;
      color: var(--ink);
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 10px;
    }
    .section-heading h2::before {
      content: '';
      width: 8px;
      height: 26px;
      border-radius: 4px;
      background: var(--green);
      flex-shrink: 0;
    }
    .section-heading p {
      color: var(--gray);
      font-size: 1rem;
      margin: 0;
    }
    .section-heading.dark .section-num {
      color: rgba(255,255,255,0.16);
    }
    .section-heading.dark h2 {
      color: var(--white);
    }
    .section-heading.dark p {
      color: var(--gray-dark);
    }

    /* ===== 置顶大卡 ===== */
    .feature-section {
      padding: 96px 0 72px;
    }
    .feature-card {
      display: flex;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 20px;
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: box-shadow var(--ease), transform var(--ease);
    }
    .feature-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .feature-card-media {
      flex: 0 0 48%;
      min-height: 340px;
      position: relative;
      overflow: hidden;
    }
    .feature-card-media img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .feature-card:hover .feature-card-media img {
      transform: scale(1.03);
    }
    .feature-card-content {
      flex: 1;
      padding: 48px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: flex-start;
    }
    .feature-card-content .tag {
      margin-bottom: 20px;
    }
    .feature-card-content h3 {
      font-size: clamp(1.5rem, 2.4vw, 2rem);
      font-weight: 800;
      color: var(--ink);
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .feature-card-content p {
      color: var(--gray);
      line-height: 1.85;
      margin-bottom: 28px;
    }

    /* ===== 内容矩阵 ===== */
    .matrix-section {
      padding: 72px 0 96px;
    }
    .matrix-card {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: transform var(--ease), box-shadow var(--ease);
    }
    .matrix-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .matrix-card-media {
      height: 210px;
      overflow: hidden;
      position: relative;
    }
    .matrix-card-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .matrix-card:hover .matrix-card-media img {
      transform: scale(1.03);
    }
    .matrix-card-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      flex: 1;
    }
    .matrix-card-body .tag {
      margin-bottom: 14px;
      align-self: flex-start;
    }
    .matrix-card-body h3 {
      font-size: 1.2rem;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 10px;
      color: var(--ink);
    }
    .matrix-card-body p {
      color: var(--gray);
      font-size: 0.95rem;
      line-height: 1.7;
      margin-bottom: 20px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    /* ===== 数据亮点 ===== */
    .stats-section {
      background: var(--ink);
      color: var(--white);
      padding: 96px 0;
    }
    .stat-item {
      text-align: center;
      padding: 40px 20px;
      border: 1px solid rgba(255,255,255,0.10);
      border-radius: var(--radius);
      height: 100%;
      transition: border-color var(--ease), background var(--ease);
    }
    .stat-item:hover {
      border-color: rgba(62,155,110,0.6);
      background: rgba(255,255,255,0.03);
    }
    .stat-number {
      font-family: Inter, 'Helvetica Neue', Arial, sans-serif;
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--green);
      line-height: 1.15;
      margin-bottom: 8px;
    }
    .stat-label {
      color: var(--gray-dark);
      font-size: 0.9rem;
      letter-spacing: 0.02em;
    }

    /* ===== 流程步骤 ===== */
    .steps-section {
      background: var(--paper);
      padding: 96px 0;
    }
    .step-item {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 32px 28px;
      height: 100%;
      box-shadow: var(--shadow);
      transition: transform var(--ease), box-shadow var(--ease);
    }
    .step-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .step-num {
      font-family: Inter, 'Helvetica Neue', Arial, sans-serif;
      font-size: 3.5rem;
      font-weight: 800;
      color: rgba(20,22,26,0.06);
      line-height: 1;
      display: block;
      margin-bottom: 16px;
    }
    .step-item h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--ink);
    }
    .step-item p {
      color: var(--gray);
      font-size: 0.95rem;
      line-height: 1.7;
      margin: 0;
    }

    /* ===== FAQ ===== */
    .faq-section {
      padding: 96px 0;
      background: var(--white);
    }
    .faq-list {
      max-width: 920px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 20px 24px;
      margin-bottom: 16px;
      transition: border-color var(--ease), box-shadow var(--ease);
    }
    .faq-item.open {
      border-color: rgba(62,155,110,0.5);
      box-shadow: var(--shadow);
    }
    .faq-question {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      font-size: 1rem;
      font-weight: 700;
      color: var(--ink);
      text-align: left;
      padding: 0;
      line-height: 1.4;
    }
    .faq-icon {
      flex-shrink: 0;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--green);
      color: var(--white);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      font-weight: 500;
      transition: transform var(--ease), background var(--ease);
    }
    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      background: var(--green-dark);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
    }
    .faq-item.open .faq-answer {
      max-height: 400px;
      padding-top: 14px;
    }
    .faq-answer p {
      color: var(--gray);
      font-size: 0.95rem;
      line-height: 1.75;
      margin: 0;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: var(--ink);
      padding: 100px 0;
      text-align: center;
      color: var(--white);
    }
    .cta-kicker {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 600;
      letter-spacing: 0.2em;
      color: var(--green);
      text-transform: uppercase;
      margin-bottom: 16px;
    }
    .cta-title {
      font-size: clamp(2rem, 4vw, 3rem);
      font-weight: 800;
      color: var(--white);
      line-height: 1.25;
      margin-bottom: 16px;
    }
    .cta-desc {
      color: var(--gray-dark);
      font-size: 1.05rem;
      margin-bottom: 36px;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--ink);
      color: rgba(255,255,255,0.75);
      padding: 72px 0 40px;
    }
    .site-footer .nav-brand-text {
      color: var(--white);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.4fr;
      gap: 48px;
      padding-bottom: 48px;
      border-bottom: 1px solid rgba(255,255,255,0.10);
    }
    .footer-brand p {
      color: var(--gray-dark);
      font-size: 0.9rem;
      line-height: 1.7;
      margin-top: 16px;
      margin-bottom: 0;
    }
    .footer-col h4 {
      color: var(--white);
      font-size: 0.95rem;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .footer-col a,
    .footer-col span {
      display: block;
      color: var(--gray-dark);
      font-size: 0.875rem;
      line-height: 2.1;
      transition: color var(--ease);
    }
    .footer-col a:hover {
      color: var(--green);
    }
    .footer-col a[href^="mailto"] {
      color: var(--gray-dark);
    }
    .footer-col a[href^="mailto"]:hover {
      color: var(--green);
    }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 32px;
      color: var(--gray-dark);
      font-size: 0.85rem;
    }

    /* ===== 移动端底部 Tab ===== */
    .mobile-tab-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 200;
      display: flex;
      height: 60px;
      background: rgba(255,255,255,0.92);
      -webkit-backdrop-filter: blur(12px);
      backdrop-filter: blur(12px);
      border-top: 1px solid var(--line);
      padding-bottom: env(safe-area-inset-bottom);
    }
    .tab-item {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 3px;
      font-size: 11px;
      font-weight: 600;
      color: var(--gray);
      transition: color var(--ease);
      position: relative;
    }
    .tab-item svg {
      width: 22px;
      height: 22px;
    }
    .tab-item.active {
      color: var(--green);
    }
    .tab-item.active svg {
      animation: tab-bounce 0.3s ease;
    }
    .tab-item.active::before {
      content: '';
      position: absolute;
      top: 4px;
      width: 4px;
      height: 4px;
      border-radius: 50%;
      background: var(--green);
    }
    @keyframes tab-bounce {
      0% {
        transform: scale(1);
      }
      50% {
        transform: scale(1.15);
      }
      100% {
        transform: scale(1);
      }
    }

    /* ===== 滚动渐显 ===== */
    .js .reveal {
      opacity: 0;
      transform: translateY(16px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .js .reveal.revealed {
      opacity: 1;
      transform: translateY(0);
    }

    /* ===== 响应式 ===== */
    @media (min-width: 1024px) {
      body {
        padding-bottom: 0;
      }
      .mobile-tab-bar {
        display: none;
      }
    }
    @media (max-width: 1023.98px) {
      .nav-links,
      .nav-cta {
        display: none;
      }
      .feature-card {
        flex-direction: column;
      }
      .feature-card-media {
        min-height: 260px;
      }
      .feature-card-content {
        padding: 32px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }
    @media (max-width: 639.98px) {
      .grid-container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .grid-margin-x {
        margin-left: -8px;
        margin-right: -8px;
      }
      .grid-margin-x > .cell {
        margin-right: 16px;
      }
      .category-banner {
        padding: 100px 0 72px;
      }
      .feature-section,
      .matrix-section,
      .steps-section,
      .faq-section {
        padding: 64px 0;
      }
      .stats-section,
      .cta-section {
        padding: 64px 0;
      }
      .feature-card-content {
        padding: 24px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
      }
      .stat-number {
        font-size: 2.25rem;
      }
      .section-num {
        font-size: 2.75rem;
      }
      .step-item {
        padding: 24px 20px;
      }
    }

/* roulang page: category3 */
:root{
  --panda-black:#14161A;
  --bg-cream:#F7F7F4;
  --white:#FFFFFF;
  --bamboo-green:#3E9B6E;
  --bamboo-green-dark:#2F7A56;
  --text-gray:#5B6166;
  --border-line:#E6E7E3;
  --dark-sub:#A6AAA8;
  --gold:#D9A441;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:999px;
  --shadow-default:0 2px 8px rgba(20,22,26,0.04),0 8px 24px rgba(20,22,26,0.06);
  --shadow-hover:0 4px 12px rgba(20,22,26,0.08),0 20px 48px rgba(20,22,26,0.10);
  --transition:0.25s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'PingFang SC','Microsoft YaHei','Source Han Sans CN','Noto Sans CJK SC',sans-serif;
  background:var(--bg-cream);
  color:#24282D;
  line-height:1.85;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  padding-bottom:60px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
button{font-family:inherit;cursor:pointer}
.grid-container{max-width:1280px;padding-left:20px;padding-right:20px;margin:0 auto}
h1,h2,h3,h4,h5{line-height:1.2;color:var(--panda-black)}
::selection{background:var(--bamboo-green);color:#fff}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-btn);font-weight:600;
  padding:12px 28px;font-size:15px;letter-spacing:0.02em;
  border:none;transition:all var(--transition);
  text-align:center;
}
.btn-primary{
  background:var(--bamboo-green);color:#fff;
  box-shadow:0 4px 14px rgba(62,155,110,0.25);
}
.btn-primary:hover{
  background:var(--bamboo-green-dark);transform:translateY(-2px);
  box-shadow:0 6px 20px rgba(62,155,110,0.32);
}
.btn-light{
  background:#fff;color:var(--panda-black);
  box-shadow:0 4px 16px rgba(0,0,0,0.06);
}
.btn-light:hover{
  transform:scale(1.02);box-shadow:0 8px 24px rgba(0,0,0,0.12);
}
.btn-dark{
  background:var(--panda-black);color:#fff;
}
.btn-dark:hover{
  background:var(--bamboo-green);transform:translateY(-2px);
}

/* 徽章 */
.badge{
  display:inline-block;background:rgba(62,155,110,0.12);color:var(--bamboo-green-dark);
  font-size:0.75rem;font-weight:600;letter-spacing:0.02em;
  padding:4px 12px;border-radius:999px;line-height:1.5;
}
.badge-hot{
  background:linear-gradient(135deg,#3E9B6E,#2F7A56);color:#fff;
}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(247,247,244,0.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border-line);
  height:64px;
  display:flex;align-items:center;
}
.site-header .grid-container{display:flex;align-items:center;width:100%}
.nav-brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-brand svg{width:36px;height:36px;display:block}
.nav-brand-text{font-weight:800;font-size:18px;color:var(--panda-black);letter-spacing:0.01em}
.nav-links{
  display:flex;align-items:center;gap:32px;
  margin-left:auto;margin-right:24px;
}
.nav-links a{
  font-size:15px;font-weight:500;color:var(--text-gray);
  padding:8px 2px;position:relative;
}
.nav-links a::after{
  content:'';position:absolute;left:0;bottom:-2px;
  width:100%;height:2px;background:var(--bamboo-green);
  transform:scaleX(0);transition:transform var(--transition);
  transform-origin:left;border-radius:2px;
}
.nav-links a:hover{color:var(--panda-black)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--bamboo-green-dark);font-weight:600}
.nav-links a.active::after{transform:scaleX(1);background:var(--bamboo-green)}
.nav-cta{padding:9px 22px;font-size:14px;flex-shrink:0}

/* 移动端底部Tab */
.mobile-tab{
  position:fixed;bottom:0;left:0;right:0;z-index:1000;
  height:60px;background:rgba(255,255,255,0.94);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--border-line);
  display:none;align-items:stretch;
  padding-bottom:env(safe-area-inset-bottom,0);
}
.mobile-tab a{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;font-size:11px;color:var(--text-gray);
  position:relative;transition:color 0.25s ease;
}
.mobile-tab a svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8}
.mobile-tab a.active{color:var(--bamboo-green)}
.mobile-tab a.active::before{
  content:'';position:absolute;top:5px;left:50%;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--bamboo-green);
}
.mobile-tab a.active svg{animation:tabBounce 0.35s ease}
@keyframes tabBounce{
  0%{transform:translateY(0)}
  50%{transform:translateY(-4px)}
  100%{transform:translateY(0)}
}

/* 页面Banner */
.page-banner{
  position:relative;
  background-size:cover;background-position:center;
  padding:88px 0 64px;margin-bottom:0;
  color:#fff;
}
.banner-overlay{
  position:absolute;inset:0;background:linear-gradient(120deg,rgba(20,22,26,0.88) 0%,rgba(20,22,26,0.55) 100%);
}
.banner-content{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:rgba(255,255,255,0.72);
  margin-bottom:20px;
}
.breadcrumb a{color:rgba(255,255,255,0.72)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:0.5}
.page-banner h1{
  font-size:clamp(2.25rem,5vw,3.5rem);
  font-weight:800;color:#fff;line-height:1.15;
  margin-bottom:16px;
  display:flex;align-items:center;gap:14px;
}
.page-banner h1::before{
  content:'';display:inline-block;width:8px;height:42px;
  background:var(--bamboo-green);border-radius:4px;flex-shrink:0;
}
.page-banner .banner-desc{
  font-size:1.05rem;color:rgba(255,255,255,0.88);
  max-width:720px;line-height:1.8;
}

/* 区块通用 */
.section-padding{padding:72px 0}
.section-heading{
  display:flex;align-items:center;gap:18px;
  margin-bottom:36px;
}
.section-num{
  font-family:'Inter','Helvetica Neue',Arial,sans-serif;
  font-size:2.6rem;font-weight:200;color:#C8CAC6;
  line-height:1;letter-spacing:-0.02em;
}
.section-heading h2{
  font-size:clamp(1.65rem,3vw,2.2rem);
  font-weight:700;color:var(--panda-black);
  position:relative;padding-left:16px;
}
.section-heading h2::before{
  content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:5px;height:24px;background:var(--bamboo-green);border-radius:3px;
}

/* 内容矩阵 */
.featured-grid-section{
  padding:72px 0 0;
}
.featured-grid{
  display:flex;flex-wrap:wrap;gap:24px;
}
.featured-main{flex:0 0 calc(58% - 12px);min-width:0}
.featured-list{flex:0 0 calc(42% - 12px);min-width:0;display:flex;flex-direction:column;gap:24px}
.featured-card{
  background:var(--white);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-default);
  display:block;transition:all var(--transition);
  border:1px solid transparent;
}
.featured-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-hover);
  border-color:var(--border-line);
}
.featured-cover{
  position:relative;overflow:hidden;aspect-ratio:16/9;
  background:var(--border-line);
}
.featured-cover img{
  width:100%;height:100%;object-fit:cover;
  transition:transform 0.6s ease;
}
.featured-card:hover .featured-cover img{transform:scale(1.03)}
.featured-cover .badge{
  position:absolute;top:14px;left:14px;background:rgba(20,22,26,0.72);color:#fff;
  backdrop-filter:blur(4px);z-index:2;
}
.featured-body{padding:24px}
.featured-body h3{
  font-size:1.25rem;font-weight:700;color:var(--panda-black);
  margin-bottom:8px;line-height:1.4;
}
.featured-body p{
  font-size:0.9rem;color:var(--text-gray);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:0.875rem;font-weight:600;color:var(--bamboo-green-dark);
  margin-top:12px;transition:gap 0.25s ease;
}
.card-link:hover{gap:10px}
.featured-sub-card{
  display:flex;background:var(--white);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-default);
  transition:all var(--transition);
  min-height:150px;
}
.featured-sub-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-hover);
}
.featured-sub-card .sub-cover{
  width:40%;min-width:140px;overflow:hidden;position:relative;
}
.featured-sub-card .sub-cover img{
  width:100%;height:100%;object-fit:cover;transition:transform 0.6s ease;
}
.featured-sub-card:hover .sub-cover img{transform:scale(1.04)}
.featured-sub-card .sub-body{
  flex:1;padding:18px 20px;display:flex;flex-direction:column;justify-content:center;
}
.featured-sub-card .sub-body h3{
  font-size:1.05rem;font-weight:700;color:var(--panda-black);
  margin:6px 0 6px;line-height:1.35;
}
.featured-sub-card .sub-body p{
  font-size:0.8rem;color:var(--text-gray);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* 数据板块 */
.brand-stats-section{
  background:var(--panda-black);padding:72px 0;
  margin-top:72px;position:relative;overflow:hidden;
}
.brand-stats-section::before{
  content:'';position:absolute;top:-60px;right:10%;
  width:220px;height:220px;border-radius:50%;
  background:rgba(62,155,110,0.12);filter:blur(60px);
}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
  position:relative;z-index:2;
}
.stat-item{
  text-align:center;padding:12px 8px;
  border-right:1px solid rgba(255,255,255,0.08);
}
.stat-item:last-child{border-right:none}
.stat-number{
  font-family:'Inter','Helvetica Neue',Arial,sans-serif;
  font-size:3rem;font-weight:700;color:var(--bamboo-green);
  line-height:1.1;display:block;
}
.stat-label{
  font-size:0.9rem;color:var(--dark-sub);margin-top:8px;display:block;
}

/* 时间线 */
.timeline-section{padding:72px 0}
.timeline-wrapper{
  max-width:920px;margin:0 auto;position:relative;
  padding-left:28px;
}
.timeline-wrapper::before{
  content:'';position:absolute;left:8px;top:8px;bottom:8px;
  width:2px;background:var(--border-line);border-radius:2px;
}
.timeline-item{
  position:relative;padding:0 0 36px 32px;
}
.timeline-item:last-child{padding-bottom:0}
.timeline-dot{
  position:absolute;left:-26px;top:6px;
  width:14px;height:14px;border-radius:50%;
  background:var(--white);border:3px solid var(--bamboo-green);
  box-shadow:0 0 0 4px rgba(62,155,110,0.15);
}
.timeline-card{
  background:var(--white);border-radius:var(--radius-card);
  padding:20px 24px;box-shadow:var(--shadow-default);
  transition:all var(--transition);
  border:1px solid transparent;
}
.timeline-card:hover{
  transform:translateY(-3px);box-shadow:var(--shadow-hover);
  border-color:var(--border-line);
}
.timeline-date{
  font-family:'Inter',sans-serif;font-size:0.8rem;font-weight:600;
  color:var(--bamboo-green-dark);letter-spacing:0.04em;
  text-transform:uppercase;
}
.timeline-card h3{font-size:1.1rem;font-weight:700;margin:6px 0 4px;color:var(--panda-black)}
.timeline-card p{font-size:0.85rem;color:var(--text-gray);line-height:1.7}

/* 内容展示区 */
.content-grid-section{padding:72px 0}
.content-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.content-card{
  background:var(--white);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-default);
  transition:all var(--transition);border:1px solid transparent;
  display:flex;flex-direction:column;
}
.content-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-hover);
  border-color:var(--border-line);
}
.content-card .cover{
  position:relative;overflow:hidden;aspect-ratio:4/3;background:var(--border-line);
}
.content-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform 0.6s ease}
.content-card:hover .cover img{transform:scale(1.04)}
.content-card .card-body{padding:18px 20px;flex:1;display:flex;flex-direction:column}
.content-card .card-body h3{
  font-size:1rem;font-weight:700;color:var(--panda-black);
  margin:8px 0 6px;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.content-card .card-body p{
  font-size:0.8rem;color:var(--text-gray);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  flex:1;
}
.content-card .card-meta{
  display:flex;align-items:center;justify-content:space-between;
  font-size:0.75rem;color:var(--dark-sub);margin-top:10px;
}

/* FAQ */
.faq-section{padding:72px 0;background:var(--white)}
.faq-wrap{max-width:920px;margin:0 auto}
.faq-item{
  background:var(--bg-cream);border-radius:var(--radius-card);
  padding:20px 24px;margin-bottom:16px;
  border:1px solid var(--border-line);
  transition:all var(--transition);
}
.faq-item:first-child{border-color:rgba(62,155,110,0.3)}
.faq-item:first-child .faq-q{color:var(--bamboo-green-dark)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;
  font-size:1rem;font-weight:700;color:var(--panda-black);
  cursor:pointer;transition:color 0.25s ease;
  user-select:none;
}
.faq-q:hover{color:var(--bamboo-green-dark)}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  background:rgba(62,155,110,0.12);color:var(--bamboo-green-dark);
  display:flex;align-items:center;justify-content:center;
  font-size:1.1rem;font-weight:400;transition:transform 0.3s ease,background 0.3s ease;
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);background:var(--bamboo-green);color:#fff;
}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 0.35s ease;
  font-size:0.95rem;color:var(--text-gray);line-height:1.8;
}
.faq-item.open .faq-a{
  max-height:240px;padding-top:12px;
}

/* CTA */
.brand-cta-section{
  background:linear-gradient(135deg,#14161A 0%,#1E232A 100%);
  padding:88px 0;text-align:center;
  position:relative;overflow:hidden;
}
.brand-cta-section::before{
  content:'';position:absolute;bottom:-80px;left:20%;
  width:260px;height:260px;border-radius:50%;
  background:rgba(62,155,110,0.18);filter:blur(70px);
}
.brand-cta-section::after{
  content:'';position:absolute;top:-60px;right:15%;
  width:180px;height:180px;border-radius:50%;
  background:rgba(62,155,110,0.1);filter:blur(50px);
}
.cta-wrap{position:relative;z-index:2}
.cta-tag{
  color:var(--bamboo-green);font-size:0.85rem;font-weight:600;
  letter-spacing:0.2em;text-transform:uppercase;margin-bottom:16px;
}
.cta-wrap h2{
  color:#fff;font-size:clamp(1.8rem,4vw,2.6rem);
  font-weight:800;line-height:1.25;margin-bottom:12px;
}
.cta-wrap p{color:var(--dark-sub);font-size:1rem;max-width:560px;margin:0 auto 32px}
.cta-wrap .btn-light{padding:15px 40px;font-size:1rem}

/* 页脚 */
.site-footer{
  background:var(--panda-black);color:rgba(255,255,255,0.72);
  padding:64px 0 32px;font-size:0.9rem;
}
.site-footer .nav-brand-text{color:#fff}
.site-footer .nav-brand svg{width:32px;height:32px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.08);
}
.footer-brand p{
  margin-top:14px;color:rgba(255,255,255,0.6);
  font-size:0.85rem;line-height:1.7;max-width:280px;
}
.site-footer h4{
  color:#fff;font-size:0.9rem;font-weight:600;
  margin-bottom:14px;letter-spacing:0.03em;
}
.site-footer .footer-col{
  display:flex;flex-direction:column;gap:10px;
}
.site-footer .footer-col a{
  color:rgba(255,255,255,0.6);font-size:0.85rem;
  transition:color 0.25s ease;
}
.site-footer .footer-col a:hover{color:var(--bamboo-green)}
.footer-contact span{
  display:block;color:rgba(255,255,255,0.6);
  font-size:0.85rem;margin-bottom:6px;
}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;
  padding-top:24px;font-size:0.8rem;
  color:rgba(255,255,255,0.4);
}

/* 滚动渐显 */
.reveal{
  opacity:1;transform:translateY(0);
  transition:opacity 0.6s ease,transform 0.6s ease;
}
.reveal.pre-reveal{opacity:0;transform:translateY(16px)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* 响应式 */
@media screen and (max-width:1023.98px){
  .nav-links{display:none}
  .nav-cta{margin-left:auto}
  .mobile-tab{display:flex}
  .content-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .featured-main{flex:0 0 100%}
  .featured-list{flex:0 0 100%;flex-direction:row;flex-wrap:wrap}
  .featured-sub-card{width:calc(50% - 12px)}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .stat-item{border-right:none;border-bottom:1px solid rgba(255,255,255,0.06);padding-bottom:20px}
  .stat-item:nth-child(odd){border-right:1px solid rgba(255,255,255,0.06)}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-bottom:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
}
@media screen and (max-width:639.98px){
  .section-padding{padding:48px 0}
  .page-banner{padding:64px 0 48px}
  .content-grid{grid-template-columns:1fr 1fr;gap:14px}
  .featured-grid{gap:16px}
  .featured-list{flex-direction:column;gap:16px}
  .featured-sub-card{width:100%}
  .featured-sub-card .sub-cover{width:34%}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat-number{font-size:2.2rem}
  .timeline-wrapper{padding-left:20px}
  .timeline-wrapper::before{left:5px}
  .timeline-item{padding-left:24px}
  .timeline-dot{left:-21px;width:12px;height:12px;border-width:2px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px;text-align:center}
  .cta-wrap .btn-light{padding:13px 32px;font-size:0.95rem}
  .nav-cta{display:none}
  .section-heading{gap:12px;margin-bottom:28px}
  .section-num{font-size:2rem}
}
@media screen and (max-width:359px){
  .content-grid{grid-template-columns:1fr}
}