/* roulang page: index */
:root {
  --iceblue: #0EA5E9;
  --indigo2: #6366F1;
  --deepindigo: #312E81;
  --energy: #F97316;
  --icecyan: #22D3EE;
  --gold: #F59E0B;
  --icebg: #F6F9FC;
  --mistbg: #EDF4F9;
  --navybg: #0F172A;
  --text-title: #1E293B;
  --text-body: #475569;
  --text-muted: #94A3B8;
  --border-color: #E2E8F0;
  --radius-lg: 24px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-regular: 0 4px 20px rgba(30,64,175,0.08);
  --shadow-hover: 0 12px 40px rgba(99,102,241,0.15);
}

html {
  scroll-behavior: smooth;
}

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--icebg);
  color: var(--text-body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
}

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

input {
  font-family: inherit;
}

.container-custom {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.din-font {
  font-family: "DIN Alternate", "Arial Narrow", sans-serif;
  font-weight: 700;
}

/* ===== 顶部通栏 ===== */
.topbar {
  background: var(--navybg);
  color: rgba(255,255,255,0.7);
  font-size: 13px;
  height: 36px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}
.topbar .topbar-date {
  color: rgba(255,255,255,0.5);
  font-size: 12px;
}

/* ===== 导航面板 ===== */
.site-header {
  background: var(--navybg);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 24px rgba(15,23,42,0.3);
  border-bottom: 1px solid rgba(34,211,238,0.15);
}
.site-header::after {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(249,115,22,0.7), transparent);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 80px;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-icon {
  width: 40px;
  height: 40px;
  color: var(--icecyan);
  flex-shrink: 0;
}
.brand-name {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
  white-space: nowrap;
  background: linear-gradient(135deg, #E0F2FE, #A5B4FC);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  justify-content: center;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #334155;
  color: rgba(255,255,255,0.85);
  border-radius: 12px;
  padding: 12px 18px;
  font-size: 14px;
  font-weight: 500;
  transition: all 200ms ease-out;
  border: 1px solid transparent;
  white-space: nowrap;
}
.nav-item i {
  font-size: 14px;
  color: var(--icecyan);
  transition: color 200ms ease-out;
}
.nav-item:hover {
  background: linear-gradient(135deg, var(--energy), #EA580C);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(249,115,22,0.25);
}
.nav-item:hover i {
  color: #fff;
}
.nav-item.active {
  background: linear-gradient(135deg, var(--energy), #EA580C);
  color: #fff;
  box-shadow: 0 0 16px rgba(249,115,22,0.4);
}
.nav-item.active i {
  color: #fff;
}
.nav-cta {
  flex-shrink: 0;
}
.nav-cta .btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--energy), #EA580C);
  color: #fff;
  border: none;
  border-radius: 9999px;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  transition: all 200ms ease-out;
  box-shadow: 0 4px 14px rgba(249,115,22,0.3);
}
.nav-cta .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 4px rgba(249,115,22,0.15), 0 8px 24px rgba(249,115,22,0.35);
}
.hamburger {
  display: none;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  color: #fff;
  width: 44px;
  height: 44px;
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: all 200ms ease-out;
}
.hamburger:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--icecyan);
}

.mobile-nav {
  display: none;
  background: var(--navybg);
  padding: 16px 24px 20px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.mobile-nav.open {
  display: block;
}
.mobile-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #1E293B;
  border-radius: 12px;
  padding: 14px 18px;
  color: rgba(255,255,255,0.85);
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 8px;
  transition: all 200ms ease-out;
}
.mobile-nav a:hover {
  background: #334155;
  color: #fff;
}
.mobile-nav a.active {
  background: linear-gradient(135deg, var(--energy), #EA580C);
  color: #fff;
}
.mobile-nav a i {
  width: 20px;
  text-align: center;
  color: var(--icecyan);
}
.mobile-nav a.active i {
  color: #fff;
}

/* ===== Hero ===== */
.hero-section {
  position: relative;
  min-height: 75vh;
  display: flex;
  align-items: center;
  background:
    radial-gradient(800px 400px at 15% 20%, rgba(14,165,233,0.18), transparent 60%),
    radial-gradient(600px 300px at 85% 90%, rgba(249,115,22,0.1), transparent 60%),
    linear-gradient(135deg, #F0F9FF, #EEF2FF, #F8FAFC);
  overflow: hidden;
}
.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99,102,241,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.hero-section::after {
  content: "";
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34,211,238,0.12), transparent 70%);
  top: -100px;
  right: 10%;
  pointer-events: none;
}
.hero-inner {
  display: flex;
  align-items: center;
  gap: 60px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 24px;
  position: relative;
  z-index: 2;
  width: 100%;
}
.hero-text {
  flex: 1 1 60%;
  max-width: 680px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(14,165,233,0.1);
  border: 1px solid rgba(14,165,233,0.25);
  color: #0369A1;
  border-radius: 9999px;
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: 0.3px;
}
.hero-badge i {
  font-size: 12px;
  color: var(--iceblue);
}
.hero-title {
  font-size: 52px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #0EA5E9, #8B5CF6, #6366F1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}
.hero-underline {
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--energy), transparent);
  border-radius: 2px;
  margin-bottom: 24px;
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 520px;
}
.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn-energy {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--energy), #EA580C);
  color: #fff;
  border: none;
  border-radius: 9999px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 700;
  transition: all 200ms ease-out;
  box-shadow: 0 6px 20px rgba(249,115,22,0.35);
}
.btn-energy:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 4px rgba(249,115,22,0.15), 0 10px 28px rgba(249,115,22,0.4);
}
.btn-energy:active {
  transform: translateY(0);
  box-shadow: 0 0 0 4px rgba(249,115,22,0.2);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.8);
  color: var(--text-body);
  border: 1.5px solid #CBD5E1;
  border-radius: 9999px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  transition: all 200ms ease-out;
  backdrop-filter: blur(4px);
}
.btn-outline:hover {
  border-color: var(--energy);
  color: var(--energy);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(249,115,22,0.1);
}
.btn-outline:active {
  transform: translateY(0);
}
.hero-visual {
  flex: 1 1 40%;
  position: relative;
}
.hero-image-wrap {
  position: relative;
  border-radius: 32px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(30,64,175,0.2);
  background: linear-gradient(135deg, #93C5FD, #A5B4FC, #C4B5FD);
  aspect-ratio: 4/3;
}
.hero-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-visual::before {
  content: "";
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34,211,238,0.3), transparent 70%);
  bottom: -20px;
  right: -20px;
  z-index: -1;
}

/* ===== 区块通用 ===== */
.section-block {
  padding: 96px 0;
}
.section-header {
  margin-bottom: 48px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, rgba(14,165,233,0.1), rgba(99,102,241,0.1));
  border: 1px solid rgba(14,165,233,0.2);
  color: #0369A1;
  border-radius: 9999px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}
.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-title);
  line-height: 1.3;
  letter-spacing: -0.3px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-muted);
  margin-top: 12px;
  max-width: 560px;
}

/* ===== 合集目录 ===== */
.collection-section {
  background: var(--icebg);
}
.collection-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.collection-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  padding: 32px 24px;
  position: relative;
  overflow: hidden;
  transition: all 200ms ease-out;
  box-shadow: var(--shadow-regular);
}
.collection-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--iceblue), var(--indigo2));
  opacity: 0.6;
}
.collection-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.collection-number {
  font-size: 52px;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 2px rgba(99,102,241,0.4);
  font-family: "DIN Alternate", "Arial Narrow", sans-serif;
  line-height: 1;
  margin-bottom: 16px;
  display: block;
}
.collection-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 8px;
}
.collection-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.collection-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(14,165,233,0.08);
  color: #0369A1;
  border: 1px solid rgba(34,211,238,0.4);
  border-radius: 9999px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
}
.collection-badge i {
  font-size: 11px;
}

/* ===== 精选条目 ===== */
.featured-section {
  background: var(--mistbg);
}
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.feature-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all 250ms ease-out;
  box-shadow: var(--shadow-regular);
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(99,102,241,0.3);
}
.feature-thumb {
  position: relative;
  aspect-ratio: 3/2;
  overflow: hidden;
  background: linear-gradient(135deg, #DBEAFE, #E0E7FF);
}
.feature-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease-out;
}
.feature-card:hover .feature-thumb img {
  transform: scale(1.05);
}
.feature-thumb .feature-cat {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15,23,42,0.8);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  border-radius: 9999px;
  padding: 4px 12px;
  border: 1px solid rgba(255,255,255,0.2);
}
.feature-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.feature-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.5;
  margin-bottom: 8px;
  transition: color 200ms ease-out;
}
.feature-body h3 a:hover {
  color: var(--energy);
}
.feature-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}
.feature-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: auto;
}
.feature-meta .read-time {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.feature-meta .read-time i {
  font-size: 11px;
}

/* ===== 最新资讯 ===== */
.news-section {
  background: var(--icebg);
}
.news-list-wrap {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-regular);
  overflow: hidden;
}
.news-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  border-bottom: 1px solid #E2E8F0;
  transition: background 200ms ease-out;
}
.news-item:last-child {
  border-bottom: none;
}
.news-item:hover {
  background: #F8FAFC;
}
.news-item:hover .news-title {
  color: var(--energy);
}
.news-thumb {
  width: 96px;
  height: 96px;
  border-radius: var(--radius-md);
  overflow: hidden;
  flex-shrink: 0;
  background: linear-gradient(135deg, #DBEAFE, #E0E7FF);
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-body {
  flex: 1;
  min-width: 0;
}
.news-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-title);
  transition: color 200ms ease-out;
  line-height: 1.4;
  margin-bottom: 4px;
  display: block;
}
.news-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}
.news-meta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
}
.news-cat-tag {
  display: inline-block;
  background: #E0F2FE;
  color: #0369A1;
  border-radius: 9999px;
  padding: 2px 10px;
  font-size: 11px;
  font-weight: 600;
}
.news-arrow {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  background: rgba(14,165,233,0.06);
  color: var(--iceblue);
  font-size: 18px;
  transition: all 200ms ease-out;
}
.news-arrow:hover {
  background: var(--energy);
  color: #fff;
  transform: translateX(4px);
}
.news-empty {
  text-align: center;
  padding: 64px 24px;
  color: var(--text-muted);
}
.news-empty svg {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  opacity: 0.3;
}
.news-empty p {
  font-size: 15px;
  font-weight: 500;
}

/* ===== 相关推荐 ===== */
.recommend-section {
  background: var(--mistbg);
}
.recommend-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.recommend-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all 250ms ease-out;
  box-shadow: var(--shadow-regular);
  position: relative;
}
.recommend-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.recommend-thumb {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: linear-gradient(135deg, #DBEAFE, #EDE9FE);
}
.recommend-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.recommend-body {
  padding: 20px;
}
.recommend-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.5;
  margin-bottom: 6px;
}
.recommend-body h3 a:hover {
  color: var(--energy);
}
.recommend-body p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.recommend-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-top: 1px solid #F1F5F9;
}
.recommend-actions .icon-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  background: transparent;
  border: none;
  color: var(--gold);
  font-size: 14px;
  transition: all 200ms ease-out;
}
.recommend-actions .icon-btn:hover {
  background: #FFF7ED;
  color: var(--energy);
  box-shadow: 0 0 0 4px rgba(249,115,22,0.12);
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--icebg);
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  padding: 20px 24px;
  margin-bottom: 16px;
  transition: all 200ms ease-out;
}
.faq-item:hover {
  border-left: 4px solid var(--energy);
  box-shadow: var(--shadow-regular);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-title);
  gap: 16px;
}
.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(14,165,233,0.1);
  color: var(--iceblue);
  font-size: 14px;
  transition: transform 300ms ease-out;
  flex-shrink: 0;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--energy);
  color: #fff;
}
.faq-answer {
  display: none;
  margin-top: 12px;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.8;
  border-top: 1px dashed #E2E8F0;
  padding-top: 12px;
}
.faq-item.open .faq-answer {
  display: block;
  animation: fadeSlideIn 300ms ease-out;
}
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(120deg, #0F172A, #312E81, #1E3A8A);
  position: relative;
  overflow: hidden;
  padding: 80px 0;
}
.cta-section::after {
  content: "";
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(249,115,22,0.15), transparent 70%);
  bottom: -100px;
  right: 10%;
}
.cta-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 2;
}
.cta-content {
  flex: 1;
}
.cta-content h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 12px;
}
.cta-content p {
  color: #C7D2FE;
  font-size: 15px;
  line-height: 1.7;
  max-width: 420px;
}
.cta-buttons {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.cta-btn-solid {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--energy), #EA580C);
  color: #fff;
  border: none;
  border-radius: 9999px;
  padding: 12px 28px;
  font-size: 14px;
  font-weight: 700;
  transition: all 200ms ease-out;
  box-shadow: 0 6px 20px rgba(249,115,22,0.3);
}
.cta-btn-solid:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 4px rgba(249,115,22,0.15), 0 10px 24px rgba(249,115,22,0.4);
}
.cta-btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.3);
  border-radius: 9999px;
  padding: 12px 28px;
  font-size: 14px;
  font-weight: 600;
  transition: all 200ms ease-out;
}
.cta-btn-ghost:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
}
.cta-subscribe {
  flex: 0 0 360px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 24px;
  padding: 32px;
  backdrop-filter: blur(8px);
}
.cta-subscribe h3 {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}
.cta-subscribe p {
  color: #A5B4FC;
  font-size: 13px;
  line-height: 1.6;
  margin-bottom: 20px;
}
.cta-subscribe form {
  display: flex;
  gap: 8px;
}
.cta-subscribe input {
  flex: 1;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 9999px;
  padding: 10px 16px;
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: all 200ms ease-out;
}
.cta-subscribe input::placeholder {
  color: rgba(255,255,255,0.4);
}
.cta-subscribe input:focus {
  border-color: var(--icecyan);
  background: rgba(255,255,255,0.15);
}
.cta-subscribe button {
  background: linear-gradient(135deg, var(--energy), #EA580C);
  color: #fff;
  border: none;
  border-radius: 9999px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  transition: all 200ms ease-out;
}
.cta-subscribe button:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 4px rgba(249,115,22,0.2);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--navybg);
  color: #CBD5E1;
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.footer-brand svg {
  width: 32px;
  height: 32px;
  color: var(--icecyan);
}
.footer-brand span {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
}
.footer-desc {
  font-size: 13px;
  line-height: 1.7;
  color: #94A3B8;
  max-width: 280px;
}
.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  background: rgba(255,255,255,0.06);
  color: #94A3B8;
  font-size: 14px;
  transition: all 200ms ease-out;
}
.footer-social a:hover {
  background: var(--energy);
  color: #fff;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul {
  list-style: none;
  padding: 0;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 13px;
  color: #94A3B8;
  transition: color 200ms ease-out;
}
.footer-col ul li a:hover {
  color: var(--icecyan);
}
.footer-disclaimer {
  font-size: 12px;
  color: #64748B;
  line-height: 1.6;
}
.footer-bottom {
  max-width: 1280px;
  margin: 48px auto 0;
  padding: 24px 24px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  text-align: center;
  font-size: 12px;
  color: #64748B;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .collection-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .recommend-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-title {
    font-size: 42px;
  }
  .hero-inner {
    gap: 40px;
  }
  .cta-inner {
    flex-direction: column;
    gap: 40px;
  }
  .cta-subscribe {
    flex: 1 1 auto;
    width: 100%;
    max-width: 480px;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section-block {
    padding: 64px 0;
  }
  .section-title {
    font-size: 28px;
  }
  .nav-menu {
    display: none;
  }
  .nav-cta {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .hero-section {
    min-height: auto;
  }
  .hero-inner {
    flex-direction: column;
    padding: 48px 24px 64px;
    text-align: center;
  }
  .hero-text {
    max-width: 100%;
  }
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-buttons {
    justify-content: center;
  }
  .hero-underline {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-visual {
    display: none;
  }
  .hero-title {
    font-size: 36px;
  }
  .featured-grid {
    grid-template-columns: 1fr;
  }
  .recommend-grid {
    grid-template-columns: 1fr;
  }
  .cta-content h2 {
    font-size: 26px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .news-item {
    flex-direction: column;
    align-items: flex-start;
  }
  .news-thumb {
    width: 100%;
    height: 160px;
  }
  .news-arrow {
    display: none;
  }
}

@media (max-width: 640px) {
  .collection-grid {
    grid-template-columns: 1fr;
  }
  .header-inner {
    height: 64px;
    padding: 0 16px;
  }
  .brand-name {
    font-size: 16px;
  }
  .brand-icon {
    width: 32px;
    height: 32px;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-subtitle {
    font-size: 15px;
  }
  .section-title {
    font-size: 24px;
  }
  .footer-grid {
    gap: 24px;
  }
  .cta-subscribe form {
    flex-direction: column;
  }
  .cta-subscribe button {
    width: 100%;
  }
}

/* roulang page: article */
:root {
            --primary: #0EA5E9;
            --primary-dark: #6366F1;
            --primary-deep: #312E81;
            --accent: #F97316;
            --accent-soft: #FFF7ED;
            --bg: #F6F9FC;
            --card: #FFFFFF;
            --border: #E2E8F0;
            --heading: #1E293B;
            --body: #475569;
            --muted: #94A3B8;
            --radius-lg: 24px;
            --radius-md: 12px;
            --shadow-card: 0 4px 20px rgba(30, 64, 175, 0.08);
            --shadow-hover: 0 12px 40px rgba(99, 102, 241, 0.15);
            --gap-section: 96px;
            --gap-card: 32px;
        }

        /* ===== Base Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            color: var(--body);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Article Page Styles ===== */
        .article-page {
            padding: 40px 0 96px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 32px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--muted);
            transition: color 0.2s;
        }

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

        .breadcrumb .separator {
            color: #CBD5E1;
        }

        .breadcrumb .current {
            color: var(--primary-dark);
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 240px;
        }

        .article-header {
            background: linear-gradient(135deg, #F0F9FF, #EEF2FF);
            border-radius: 24px;
            padding: 48px 48px 40px;
            margin-bottom: 32px;
            border: 1px solid #E0E7FF;
            position: relative;
            overflow: hidden;
        }

        .article-header::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 240px;
            height: 240px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.12), transparent 70%);
            border-radius: 50%;
        }

        .article-header h1 {
            font-size: 40px;
            font-weight: 900;
            color: var(--heading);
            line-height: 1.3;
            margin-bottom: 20px;
            max-width: 720px;
            position: relative;
            z-index: 1;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            font-size: 14px;
            color: var(--muted);
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta .meta-item i {
            color: var(--primary);
            font-size: 14px;
        }

        .article-meta .category-badge {
            background: linear-gradient(135deg, #E0F2FE, #EEF2FF);
            color: #0369A1;
            padding: 4px 12px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid #BAE6FD;
        }

        .article-featured-img {
            border-radius: 24px;
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: var(--shadow-card);
            position: relative;
            background: linear-gradient(135deg, #E0F2FE, #EEF2FF);
        }

        .article-featured-img img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .article-body-wrap {
            max-width: 780px;
            margin: 0 auto;
        }

        .article-content {
            background: #FFFFFF;
            border-radius: 24px;
            padding: 48px 56px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }

        .article-content h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--heading);
            margin: 40px 0 20px;
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--heading);
            margin: 32px 0 16px;
        }

        .article-content p {
            margin-bottom: 20px;
            color: var(--body);
            line-height: 1.8;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 20px 20px;
            line-height: 1.8;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: #F0F9FF;
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            color: var(--body);
        }

        .article-content img {
            border-radius: 16px;
            margin: 24px 0;
        }

        .article-content code {
            background: #F1F5F9;
            padding: 2px 8px;
            border-radius: 6px;
            font-family: 'Courier New', monospace;
            font-size: 14px;
        }

        .article-tags {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid #E2E8F0;
        }

        .article-tags .tag {
            background: #E0F2FE;
            color: #0369A1;
            padding: 6px 16px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 500;
            transition: all 0.2s;
        }

        .article-tags .tag:hover {
            background: var(--accent);
            color: #FFFFFF;
        }

        .article-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 24px;
        }

        .action-btn {
            width: 44px;
            height: 44px;
            border-radius: 9999px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #F1F5F9;
            color: var(--body);
            transition: all 0.2s;
        }

        .action-btn:hover {
            background: var(--accent-soft);
            color: var(--accent);
            box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.12);
        }

        .related-section {
            max-width: 780px;
            margin: 64px auto 0;
        }

        .section-title {
            font-size: 24px;
            font-weight: 800;
            color: var(--heading);
            margin-bottom: 24px;
            position: relative;
            padding-left: 16px;
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 20px;
            background: var(--accent);
            border-radius: 9999px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .related-card {
            background: #FFFFFF;
            border-radius: 20px;
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: all 0.3s;
        }

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

        .related-card .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--heading);
            margin-bottom: 8px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-excerpt {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 16px;
            font-size: 12px;
            color: var(--muted);
        }

        .related-card .card-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 500;
            margin-top: 12px;
            transition: color 0.2s;
        }

        .related-card .card-btn:hover {
            color: var(--accent);
        }

        .back-btn-wrap {
            max-width: 780px;
            margin: 40px auto 0;
            text-align: center;
        }

        .back-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: #FFFFFF;
            border: 1.5px solid #CBD5E1;
            color: var(--body);
            border-radius: 9999px;
            font-weight: 500;
            transition: all 0.2s ease;
        }

        .back-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: var(--shadow-energyGlow);
            transform: translateY(-2px);
        }

        .not-found-box {
            background: #FFFFFF;
            border-radius: 24px;
            padding: 64px 48px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            max-width: 600px;
            margin: 0 auto;
        }

        .not-found-box .icon {
            font-size: 64px;
            color: #CBD5E1;
            margin-bottom: 24px;
        }

        .not-found-box h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 12px;
        }

        .not-found-box p {
            font-size: 16px;
            color: var(--muted);
            margin-bottom: 24px;
        }

        .not-found-box a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: linear-gradient(135deg, #F97316, #F59E0B);
            color: #FFFFFF;
            border-radius: 9999px;
            font-weight: 500;
            transition: all 0.2s ease;
        }

        .not-found-box a:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-energyGlow);
        }

        /* ===== Navigation Panel ===== */
        .site-nav {
            background: #0F172A;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 24px rgba(15, 23, 42, 0.45);
            border-bottom: 1px solid rgba(249, 115, 22, 0.3);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #FFFFFF;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .site-logo svg {
            width: 36px;
            height: 36px;
            color: #22D3EE;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 12px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 16px;
            background: #334155;
            color: #CBD5E1;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s ease-out;
            text-decoration: none;
            white-space: nowrap;
        }

        .nav-item i {
            font-size: 14px;
            color: #22D3EE;
            transition: color 0.2s;
        }

        .nav-item:hover {
            background: linear-gradient(135deg, #F97316, #F59E0B);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        .nav-item:hover i {
            color: #FFFFFF;
        }

        .nav-item.active {
            background: linear-gradient(135deg, #F97316, #F59E0B);
            color: #FFFFFF;
            box-shadow: 0 0 20px rgba(249, 115, 22, 0.3);
        }

        .nav-item.active i {
            color: #FFFFFF;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: linear-gradient(135deg, #F97316, #F59E0B);
            color: #FFFFFF;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.2s ease;
            text-decoration: none;
            white-space: nowrap;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.2);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: #FFFFFF;
            margin: 5px 0;
            border-radius: 2px;
            transition: all 0.3s;
        }

        @media (max-width: 1024px) {
            .nav-inner {
                flex-wrap: wrap;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #0F172A;
                border-radius: 16px;
                padding: 16px;
                margin-top: 12px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-item {
                width: 100%;
                justify-content: center;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-cta {
                margin-left: auto;
            }
        }

        @media (max-width: 640px) {
            .site-logo {
                font-size: 16px;
            }
            .site-logo svg {
                width: 28px;
                height: 28px;
            }
            .nav-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0F172A;
            padding: 64px 0 0;
            margin-top: 0;
        }

        .footer-grid {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #FFFFFF;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-brand svg {
            width: 32px;
            height: 32px;
            color: #22D3EE;
        }

        .footer-desc {
            color: #94A3B8;
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            background: #1E293B;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #94A3B8;
            font-size: 14px;
            transition: all 0.2s;
        }

        .footer-social a:hover {
            background: linear-gradient(135deg, #F97316, #F59E0B);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        .footer-col h4 {
            color: #FFFFFF;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul a {
            color: #94A3B8;
            font-size: 14px;
            transition: color 0.2s;
        }

        .footer-col ul a:hover {
            color: #F97316;
        }

        .footer-disclaimer {
            color: #94A3B8;
            font-size: 13px;
            line-height: 1.6;
        }

        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding: 24px 0;
            text-align: center;
            color: #475569;
            font-size: 13px;
        }

        .footer-bottom p {
            margin: 0;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .article-header {
                padding: 32px 20px;
            }
            .article-header h1 {
                font-size: 28px;
            }
            .article-content {
                padding: 32px 20px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
            .breadcrumb .current {
                max-width: 160px;
            }
        }

        @media (max-width: 1024px) {
            .article-featured-img img {
                height: 320px;
            }
            .article-content {
                padding: 40px 32px;
            }
        }

        @media (max-width: 768px) {
            .article-featured-img img {
                height: 240px;
            }
            .article-header h1 {
                font-size: 28px;
            }
        }

/* roulang page: category1 */
:root {
  --ice:#0EA5E9;
  --indigo:#6366F1;
  --deep-indigo:#312E81;
  --energy:#F97316;
  --cyan:#22D3EE;
  --amber:#F59E0B;
  --bg:#F6F9FC;
  --bg-alt:#EDF4F9;
  --dark:#0F172A;
  --title:#1E293B;
  --body:#475569;
  --muted:#94A3B8;
  --border:#E2E8F0;
  --radius-lg:24px;
  --radius-md:12px;
  --radius-full:9999px;
  --shadow-card:0 4px 20px rgba(30,64,175,.08);
  --shadow-hover:0 12px 40px rgba(99,102,241,.15);
  --font-din:"DIN Alternate","Arial Narrow",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;background:var(--bg);color:var(--body);line-height:1.8;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:all .2s ease}
button,input{font-family:inherit}
ul{list-style:none}
.container{max-width:1280px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--dark);color:#E2E8F0}
.section-head{text-align:center;margin-bottom:56px}
.section-head h2{font-size:36px;font-weight:900;color:var(--title);letter-spacing:-.5px}
.section-head p{font-size:16px;color:var(--muted);margin-top:10px;max-width:640px;margin-left:auto;margin-right:auto}
.section-dark .section-head h2{color:#fff}
.section-dark .section-head p{color:#94A3B8}
.top-bar{background:var(--dark);color:#CBD5E1;font-size:12px;height:36px;display:flex;align-items:center;justify-content:space-between;padding:0 24px}
.top-bar .top-bar-text i{color:var(--energy);margin-right:6px}
.top-bar .top-bar-date i{margin-right:4px}
.site-header{position:sticky;top:0;z-index:100;background:rgba(15,23,42,.92);backdrop-filter:blur(8px);box-shadow:0 4px 24px rgba(15,23,42,.25)}
.nav-panel{display:flex;align-items:center;justify-content:space-between;height:80px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;flex-shrink:0}
.logo svg{width:34px;height:34px;color:var(--ice)}
.logo span{font-size:22px;font-weight:900;letter-spacing:.5px;background:linear-gradient(120deg,#7DD3FC,#A5B4FC,#F0ABFC);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nav-menu{display:flex;align-items:center;gap:10px;flex:1;justify-content:center}
.nav-item{display:flex;align-items:center;gap:8px;background:#334155;color:#CBD5E1;padding:10px 16px;border-radius:12px;font-size:14px;font-weight:600;transition:all .2s ease-out;border:1px solid rgba(148,163,184,.15)}
.nav-item i{font-size:14px;color:var(--cyan)}
.nav-item:hover{background:linear-gradient(120deg,#F97316,#FB923C);color:#fff;transform:translateY(-2px);box-shadow:0 6px 20px rgba(249,115,22,.35)}
.nav-item:hover i{color:#fff}
.nav-item.active{background:linear-gradient(120deg,#F97316,#FB923C);color:#fff;box-shadow:0 0 0 4px rgba(249,115,22,.15),0 8px 24px rgba(249,115,22,.3)}
.nav-item.active i{color:#fff}
.btn-primary{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(120deg,#F97316,#FBBF24);color:#fff;font-weight:700;font-size:15px;padding:12px 28px;border-radius:9999px;border:none;cursor:pointer;transition:all .25s ease-out;white-space:nowrap}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 4px rgba(249,115,22,.15),0 12px 30px rgba(249,115,22,.35)}
.btn-primary:active{transform:translateY(0)}
.btn-nav{padding:10px 22px;font-size:14px}
.btn-secondary{display:inline-flex;align-items:center;gap:8px;background:transparent;color:#475569;font-weight:600;font-size:15px;padding:12px 28px;border-radius:9999px;border:1.5px solid #CBD5E1;cursor:pointer;transition:all .2s ease-out}
.btn-secondary:hover{border-color:var(--energy);color:var(--energy);box-shadow:0 0 0 4px rgba(249,115,22,.08)}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.hamburger span{width:24px;height:2px;background:var(--ice);border-radius:2px;transition:all .25s}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.category-hero{position:relative;min-height:320px;display:flex;align-items:center;overflow:hidden;background:var(--dark)}
.category-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.45}
.category-hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(15,23,42,.95) 0%,rgba(30,58,138,.75) 50%,rgba(99,102,241,.4) 100%)}
.category-hero-content{position:relative;z-index:2;padding:70px 0;max-width:720px}
.category-hero .badge{display:inline-flex;align-items:center;gap:6px;background:rgba(34,211,238,.15);color:#67E8F9;border:1px solid rgba(34,211,238,.3);font-size:13px;font-weight:600;padding:5px 16px;border-radius:9999px;margin-bottom:20px}
.category-hero .badge i{font-size:12px}
.category-hero h1{font-size:48px;font-weight:900;color:#fff;line-height:1.2;letter-spacing:-1px;margin-bottom:16px;background:linear-gradient(120deg,#7DD3FC,#A5B4FC,#E9D5FF);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.category-hero p{font-size:17px;color:#CBD5E1;line-height:1.8;margin-bottom:32px;max-width:620px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-actions .btn-primary i{margin-right:4px}
.hero-actions .btn-secondary{color:#E2E8F0;border-color:rgba(148,163,184,.5)}
.hero-actions .btn-secondary:hover{color:#F97316;border-color:#F97316;background:rgba(249,115,22,.05)}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.feature-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 28px;position:relative;overflow:hidden;transition:all .25s ease-out;box-shadow:var(--shadow-card)}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--ice),var(--indigo));opacity:.5;transition:opacity .3s}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.feature-card:hover::before{opacity:1}
.feature-icon{width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--ice);background:linear-gradient(135deg,rgba(14,165,233,.12),rgba(99,102,241,.12));margin-bottom:20px;transition:all .3s}
.feature-card:hover .feature-icon{color:#fff;background:linear-gradient(135deg,#0EA5E9,#6366F1)}
.feature-card h3{font-size:20px;font-weight:800;color:var(--title);margin-bottom:10px}
.feature-card p{font-size:15px;color:var(--body);line-height:1.75}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.guide-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all .25s ease-out;box-shadow:var(--shadow-card);display:flex;flex-direction:column}
.guide-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.guide-card-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,#E0F2FE,#E0E7FF)}
.guide-card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.guide-card:hover .guide-card-cover img{transform:scale(1.04)}
.guide-card-cover::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(15,23,42,.15))}
.guide-card-body{padding:24px;display:flex;flex-direction:column;flex:1}
.guide-card-body h3{font-size:18px;font-weight:800;color:var(--title);line-height:1.5;margin-bottom:10px}
.guide-card-body h3 a:hover{color:var(--energy)}
.guide-card-body p{font-size:14px;color:var(--body);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.guide-card-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:16px;border-top:1px solid #F1F5F9}
.guide-card-meta .date{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:6px}
.guide-card-meta .view-btn{display:inline-flex;align-items:center;gap:4px;background:var(--bg-alt);color:var(--body);font-size:13px;font-weight:600;padding:5px 14px;border-radius:9999px;transition:all .2s}
.guide-card-meta .view-btn:hover{background:var(--energy);color:#fff}
.pagination{display:flex;justify-content:center;gap:8px;margin-top:48px}
.page-btn{display:inline-flex;align-items:center;justify-content:center;min-width:44px;height:44px;padding:0 16px;border-radius:9999px;background:#fff;border:1px solid var(--border);color:var(--body);font-size:15px;font-weight:600;transition:all .2s}
.page-btn:hover{border-color:var(--energy);color:var(--energy)}
.page-btn.active{background:linear-gradient(120deg,#F97316,#FBBF24);color:#fff;border-color:transparent;box-shadow:0 4px 16px rgba(249,115,22,.3)}
.scenario-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.scenario-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 28px;text-align:center;transition:all .25s;box-shadow:var(--shadow-card)}
.scenario-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.scenario-num{font-family:var(--font-din);font-size:44px;font-weight:700;color:transparent;-webkit-text-stroke:1px var(--indigo);line-height:1;margin-bottom:16px}
.scenario-item:nth-child(2) .scenario-num{-webkit-text-stroke:1px var(--ice)}
.scenario-item:nth-child(3) .scenario-num{-webkit-text-stroke:1px var(--energy)}
.scenario-content h3{font-size:19px;font-weight:800;color:var(--title);margin-bottom:10px}
.scenario-content p{font-size:14px;color:var(--body);line-height:1.75}
.steps-wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-item{position:relative;background:rgba(255,255,255,.04);border:1px solid rgba(148,163,184,.15);border-radius:var(--radius-lg);padding:32px 24px;text-align:center;transition:all .25s}
.step-item:hover{background:rgba(255,255,255,.08);border-color:rgba(249,115,22,.4);transform:translateY(-4px)}
.step-item::after{content:'→';position:absolute;right:-20px;top:50%;transform:translateY(-50%);color:var(--energy);font-size:22px;font-weight:700;z-index:2}
.step-item:last-child::after{display:none}
.step-number{font-family:var(--font-din);font-size:38px;font-weight:700;background:linear-gradient(120deg,#0EA5E9,#6366F1);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:12px}
.step-item h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:8px}
.step-item p{font-size:13px;color:#94A3B8;line-height:1.6}
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px 24px;transition:all .25s;box-shadow:var(--shadow-card)}
.faq-item:hover{border-color:rgba(99,102,241,.3);box-shadow:var(--shadow-hover)}
.faq-question{display:flex;align-items:center;gap:12px;cursor:pointer;font-size:17px;font-weight:700;color:var(--title);padding:4px 0}
.faq-question .faq-icon{width:24px;height:24px;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(120deg,#0EA5E9,#6366F1);color:#fff;border-radius:8px;font-size:12px;transition:all .3s}
.faq-item.open .faq-icon{background:linear-gradient(120deg,#F97316,#FBBF24);transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease;padding-left:36px;font-size:15px;color:var(--body);line-height:1.8}
.faq-item.open .faq-answer{max-height:500px;padding-top:12px}
.cta-banner{background:linear-gradient(120deg,#0F172A,#312E81,#1E3A8A);position:relative;overflow:hidden;padding:80px 0}
.cta-banner::after{content:'';position:absolute;right:-80px;bottom:-80px;width:300px;height:300px;background:radial-gradient(circle,rgba(249,115,22,.2),transparent 70%)}
.cta-content{position:relative;z-index:2;text-align:center;max-width:720px;margin:0 auto}
.cta-content h2{font-size:32px;font-weight:900;color:#fff;margin-bottom:14px}
.cta-content p{font-size:15px;color:#C7D2FE;margin-bottom:32px}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.cta-btn-primary{background:linear-gradient(120deg,#F97316,#FBBF24);color:#fff;font-weight:700;font-size:15px;padding:14px 32px;border:none;border-radius:9999px;cursor:pointer;transition:all .25s}
.cta-btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 4px rgba(249,115,22,.2),0 12px 30px rgba(249,115,22,.3)}
.cta-btn-secondary{background:transparent;color:#E2E8F0;border:1.5px solid rgba(226,232,240,.5);font-weight:600;font-size:15px;padding:14px 32px;border-radius:9999px;cursor:pointer;transition:all .25s}
.cta-btn-secondary:hover{border-color:#F97316;color:#F97316;background:rgba(249,115,22,.05)}
.site-footer{background:var(--dark);color:#94A3B8;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(148,163,184,.12)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px}
.footer-brand svg{width:30px;height:30px;color:var(--ice)}
.footer-brand span{font-size:20px;font-weight:900;background:linear-gradient(120deg,#7DD3FC,#A5B4FC);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.footer-desc{font-size:14px;line-height:1.8;margin-bottom:20px;color:#94A3B8}
.footer-social{display:flex;gap:12px}
.footer-social a{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.06);display:flex;align-items:center;justify-content:center;color:#94A3B8;font-size:15px;transition:all .2s}
.footer-social a:hover{background:var(--energy);color:#fff;transform:translateY(-2px)}
.footer-col h4{font-size:15px;font-weight:700;color:#E2E8F0;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:#94A3B8;transition:all .2s}
.footer-col ul a:hover{color:var(--energy);padding-left:4px}
.footer-disclaimer{font-size:13px;color:#94A3B8;line-height:1.8}
.footer-bottom{padding:24px 0;text-align:center;font-size:13px;color:#64748B}
.footer-bottom p{line-height:1.6}
.mobile-menu{display:none;position:fixed;top:0;right:0;bottom:0;width:280px;background:var(--dark);z-index:200;flex-direction:column;padding:80px 24px 24px;gap:12px;transform:translateX(100%);transition:transform .25s ease}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu .nav-item{width:100%}
.mobile-menu-overlay{display:none;position:fixed;inset:0;background:rgba(15,23,42,.6);z-index:150}
.mobile-menu-overlay.open{display:block}
@media(max-width:1024px){
  .nav-menu{display:none}
  .hamburger{display:flex}
  .nav-panel .btn-nav{display:none}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .scenario-wrap{grid-template-columns:repeat(2,1fr)}
  .steps-wrap{grid-template-columns:repeat(2,1fr)}
  .step-item::after{display:none}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .section{padding:64px 0}
  .section-head h2{font-size:28px}
  .category-hero h1{font-size:34px}
  .category-hero p{font-size:15px}
  .top-bar{font-size:11px}
  .top-bar .top-bar-date{display:none}
  .feature-grid{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .scenario-wrap{grid-template-columns:1fr}
  .steps-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .hero-actions{flex-direction:column;align-items:flex-start}
  .hero-actions .btn-primary,.hero-actions .btn-secondary{width:100%;justify-content:center}
  .cta-content h2{font-size:26px}
  .cta-actions{flex-direction:column}
  .cta-btn-primary,.cta-btn-secondary{width:100%}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .category-hero h1{font-size:28px}
  .logo span{font-size:18px}
  .logo svg{width:28px;height:28px}
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root {
  --primary: #0EA5E9;
  --primary-dark: #6366F1;
  --deep: #312E81;
  --accent: #F97316;
  --ice: #22D3EE;
  --amber: #F59E0B;
  --bg: #F6F9FC;
  --bg-alt: #EDF4F9;
  --dark: #0F172A;
  --text: #1E293B;
  --text-body: #475569;
  --text-mute: #94A3B8;
  --border: #E2E8F0;
  --radius-lg: 24px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(30,64,175,0.08);
  --shadow-hover: 0 12px 40px rgba(99,102,241,0.15), 0 0 0 1px rgba(99,102,241,0.2);
  --shadow-accent: 0 0 0 4px rgba(249,115,22,0.15);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Arial Narrow", sans-serif;
}

/* ===== Reset / Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-body);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }
h1, h2, h3, h4 { color: var(--text); line-height: 1.3; font-weight: 800; }

/* ===== 容器 ===== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* ===== 通用区块 ===== */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .section-tag { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--primary); background: rgba(14,165,233,0.08); padding: 6px 16px; border-radius: 999px; margin-bottom: 16px; text-transform: uppercase; }
.section-head h2 { font-size: 36px; font-weight: 900; color: var(--text); margin-bottom: 16px; }
.section-head p { font-size: 16px; color: var(--text-body); }

/* ===== 按钮 ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 32px; border-radius: 999px; font-size: 16px; font-weight: 700; line-height: 1.4; transition: all .2s ease-out; border: 1.5px solid transparent; }
.btn i { font-size: 14px; }
.btn-accent { background: linear-gradient(135deg, #F97316, #FB923C); color: #fff; box-shadow: 0 4px 16px rgba(249,115,22,0.3); }
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 0 0 4px rgba(249,115,22,0.15), 0 8px 24px rgba(249,115,22,0.3); }
.btn-accent:active { transform: translateY(1px); }
.btn-outline { background: #fff; border-color: #CBD5E1; color: var(--text-body); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(249,115,22,0.08); }
.btn-outline:active { transform: translateY(1px); }
.btn-sm { padding: 10px 24px; font-size: 14px; }
.btn-lg { padding: 16px 40px; font-size: 17px; }

/* ===== 顶部公告条 ===== */
.top-bar { background: var(--dark); color: rgba(255,255,255,0.75); font-size: 13px; height: 36px; display: flex; align-items: center; }
.top-bar-inner { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.top-bar-inner span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top-bar-date { color: rgba(255,255,255,0.45); }

/* ===== 导航面板 ===== */
.site-header { background: var(--dark); position: sticky; top: 0; z-index: 100; box-shadow: 0 8px 30px rgba(15,23,42,0.3); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 80px; gap: 24px; position: relative; }
.logo { display: flex; align-items: center; gap: 12px; color: #fff; flex-shrink: 0; }
.logo svg { width: 36px; height: 36px; color: var(--accent); }
.logo span { font-size: 20px; font-weight: 900; letter-spacing: 0.5px; white-space: nowrap; }
.nav-menu { display: flex; align-items: center; gap: 8px; flex: 1; justify-content: center; }
.nav-item { display: flex; align-items: center; gap: 8px; background: #334155; color: rgba(255,255,255,0.85); border-radius: var(--radius-md); padding: 10px 18px; font-size: 14px; font-weight: 600; transition: all .2s ease-out; border: 1px solid transparent; white-space: nowrap; }
.nav-item i { font-size: 14px; color: rgba(255,255,255,0.6); transition: color .2s; }
.nav-item:hover { background: linear-gradient(135deg, #F97316, #FB923C); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 16px rgba(249,115,22,0.3); }
.nav-item:hover i { color: #fff; }
.nav-item.active { background: linear-gradient(135deg, #F97316, #EB5A0E); color: #fff; box-shadow: 0 0 0 4px rgba(249,115,22,0.2), 0 8px 24px rgba(249,115,22,0.3); }
.nav-item.active i { color: #fff; }
.nav-cta { flex-shrink: 0; }
.nav-cta .btn { background: linear-gradient(135deg, #F97316, #FB923C); color: #fff; padding: 10px 22px; font-size: 14px; border-radius: 999px; font-weight: 700; }
.nav-cta .btn:hover { transform: translateY(-2px); box-shadow: 0 0 0 4px rgba(249,115,22,0.15), 0 8px 20px rgba(249,115,22,0.3); }
.nav-toggle { display: none; width: 42px; height: 42px; background: rgba(255,255,255,0.1); border-radius: 10px; color: #fff; font-size: 18px; align-items: center; justify-content: center; flex-shrink: 0; }

/* ===== 移动端抽屉 ===== */
.mobile-drawer { position: fixed; top: 0; right: -320px; width: 320px; height: 100%; background: var(--dark); z-index: 200; padding: 32px 24px; display: flex; flex-direction: column; gap: 12px; transition: right .25s ease-out; box-shadow: -8px 0 30px rgba(0,0,0,0.3); }
.mobile-drawer.open { right: 0; }
.mobile-drawer .drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.mobile-drawer .drawer-logo { color: #fff; font-size: 18px; font-weight: 900; }
.mobile-drawer .drawer-close { color: rgba(255,255,255,0.7); font-size: 20px; width: 36px; height: 36px; border-radius: 8px; background: rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; }
.mobile-drawer .nav-item { width: 100%; background: rgba(255,255,255,0.05); justify-content: flex-start; padding: 14px 20px; border: 1px solid rgba(255,255,255,0.06); }
.mobile-drawer .nav-item.active { background: linear-gradient(135deg, #F97316, #EB5A0E); box-shadow: 0 0 0 3px rgba(249,115,22,0.2); }
.mobile-drawer-overlay { position: fixed; inset: 0; background: rgba(15,23,42,0.5); backdrop-filter: blur(2px); z-index: 150; opacity: 0; pointer-events: none; transition: opacity .25s; }
.mobile-drawer-overlay.open { opacity: 1; pointer-events: auto; }

/* ===== 分类 Hero ===== */
.category-hero { position: relative; height: 320px; display: flex; align-items: center; justify-content: center; text-align: center; color: #fff; background-size: cover; background-position: center; overflow: hidden; }
.category-hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(15,23,42,0.85), rgba(49,46,129,0.7), rgba(30,58,138,0.55)); z-index: 1; }
.category-hero::after { content: ""; position: absolute; inset: 0; background-image: radial-gradient(circle at 20% 80%, rgba(249,115,22,0.15), transparent 40%), radial-gradient(circle at 80% 20%, rgba(34,211,238,0.2), transparent 50%); z-index: 2; }
.category-hero-content { position: relative; z-index: 3; padding: 0 24px; max-width: 800px; }
.category-hero-content .badge { display: inline-block; background: rgba(249,115,22,0.15); border: 1px solid rgba(249,115,22,0.4); color: #FDB089; font-size: 13px; font-weight: 700; padding: 6px 18px; border-radius: 999px; letter-spacing: 2px; margin-bottom: 20px; }
.category-hero-content h1 { font-size: 48px; font-weight: 900; color: #fff; margin-bottom: 16px; text-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.category-hero-content p { font-size: 18px; color: rgba(255,255,255,0.85); max-width: 600px; margin: 0 auto 28px; }
.category-hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.category-hero-actions .btn-outline { border-color: rgba(255,255,255,0.4); color: #fff; background: transparent; }
.category-hero-actions .btn-outline:hover { border-color: var(--accent); color: var(--accent); background: #fff; }

/* ===== 时间轴 ===== */
.timeline { position: relative; max-width: 900px; margin: 0 auto; }
.timeline::before { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px; background: linear-gradient(to bottom, transparent, rgba(14,165,233,0.3), rgba(99,102,241,0.4), transparent); }
.timeline-item { position: relative; display: flex; align-items: center; margin-bottom: 40px; }
.timeline-date { width: 50%; text-align: right; padding-right: 48px; font-family: var(--font-num); }
.timeline-date .year { display: block; font-size: 32px; font-weight: 900; color: var(--primary); line-height: 1; }
.timeline-date .month { display: block; font-size: 14px; color: var(--text-mute); font-weight: 600; margin-top: 4px; }
.timeline-card { width: 50%; padding-left: 48px; }
.timeline-card .card-inner { background: #fff; border-radius: var(--radius-lg); padding: 24px 28px; border: 1px solid var(--border); box-shadow: var(--shadow); position: relative; transition: all .2s ease-out; }
.timeline-card .card-inner:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.timeline-card .card-inner::before { content: ""; position: absolute; left: -6px; top: 32px; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(249,115,22,0.2); }
.timeline-card h3 { font-size: 18px; font-weight: 800; margin: 8px 0 10px; }
.timeline-card ul { padding-left: 0; list-style: none; }
.timeline-card li { font-size: 14px; color: var(--text-body); padding: 4px 0 4px 20px; position: relative; }
.timeline-card li::before { content: ""; position: absolute; left: 0; top: 14px; width: 6px; height: 6px; border-radius: 50%; background: var(--ice); }
.timeline-tag { display: inline-block; font-size: 12px; font-weight: 700; color: var(--primary); background: rgba(14,165,233,0.08); border: 1px solid rgba(14,165,233,0.2); padding: 2px 12px; border-radius: 999px; }
.timeline-status { display: inline-block; font-size: 12px; font-weight: 600; color: #059669; background: rgba(5,150,105,0.08); padding: 2px 10px; border-radius: 999px; margin-left: 8px; }

/* ===== 特色卡片 ===== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.feature-card { background: #fff; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow); transition: all .2s ease-out; position: relative; }
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.feature-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--primary), var(--primary-dark)); opacity: 0; transition: opacity .2s; }
.feature-card:hover::before { opacity: 1; }
.feature-card .cover { width: 100%; height: 200px; object-fit: cover; background: linear-gradient(135deg, #0EA5E9, #6366F1); }
.feature-card .body { padding: 24px 28px; }
.feature-card .tag { display: inline-block; font-size: 12px; font-weight: 700; color: var(--accent); background: rgba(249,115,22,0.08); padding: 4px 14px; border-radius: 999px; margin-bottom: 12px; }
.feature-card h3 { font-size: 20px; font-weight: 800; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-body); }

/* ===== 流程步骤 ===== */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.step-card { text-align: center; padding: 40px 32px; background: #fff; border-radius: var(--radius-lg); border: 1px solid var(--border); box-shadow: var(--shadow); transition: all .2s ease-out; position: relative; }
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.step-num { font-family: var(--font-num); font-size: 56px; font-weight: 900; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; line-height: 1; margin-bottom: 16px; display: block; }
.step-card h3 { font-size: 18px; font-weight: 800; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--text-body); }

/* ===== CTA 条幅 ===== */
.cta-section { background: linear-gradient(120deg, #0F172A, #312E81, #1E3A8A); padding: 72px 0; color: #fff; position: relative; overflow: hidden; }
.cta-section::after { content: ""; position: absolute; right: -80px; bottom: -80px; width: 300px; height: 300px; border-radius: 50%; background: radial-gradient(circle, rgba(249,115,22,0.25), transparent 70%); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 32px; position: relative; z-index: 2; }
.cta-left h2 { color: #fff; font-size: 30px; font-weight: 900; margin-bottom: 12px; }
.cta-left p { color: #C7D2FE; font-size: 15px; max-width: 420px; }
.cta-form { display: flex; gap: 12px; flex-wrap: wrap; }
.cta-form input { padding: 14px 24px; border-radius: 999px; border: 1px solid rgba(255,255,255,0.2); background: rgba(255,255,255,0.1); color: #fff; min-width: 260px; font-size: 14px; outline: none; transition: all .2s; }
.cta-form input::placeholder { color: rgba(255,255,255,0.5); }
.cta-form input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(249,115,22,0.15); }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: #fff; border-radius: 16px; border: 1px solid var(--border); padding: 20px 24px; margin-bottom: 16px; box-shadow: var(--shadow); transition: all .2s ease-out; }
.faq-item:hover { box-shadow: var(--shadow-hover); }
.faq-item.open { box-shadow: var(--shadow-hover); }
.faq-question { cursor: pointer; display: flex; align-items: center; gap: 16px; font-size: 16px; font-weight: 700; color: var(--text); }
.faq-qmark { width: 28px; height: 28px; flex-shrink: 0; border-radius: 8px; background: rgba(249,115,22,0.1); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 900; }
.faq-icon { margin-left: auto; width: 24px; height: 24px; border-radius: 50%; background: var(--bg-alt); color: var(--text-mute); display: flex; align-items: center; justify-content: center; font-size: 11px; transition: all .3s ease; flex-shrink: 0; }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--accent); color: #fff; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .3s ease, margin-top .3s ease; font-size: 14px; color: var(--text-body); line-height: 1.8; }
.faq-item.open .faq-answer { max-height: 300px; margin-top: 14px; }

/* ===== 页脚 ===== */
.site-footer { background: #0F172A; color: rgba(255,255,255,0.7); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 48px; margin-bottom: 56px; }
.footer-brand { display: flex; align-items: center; gap: 12px; color: #fff; margin-bottom: 16px; }
.footer-brand svg { width: 36px; height: 36px; color: var(--accent); }
.footer-brand span { font-size: 20px; font-weight: 900; }
.footer-desc { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.5); margin-bottom: 20px; max-width: 360px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a { width: 38px; height: 38px; border-radius: 10px; background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.6); display: flex; align-items: center; justify-content: center; font-size: 15px; transition: all .2s; }
.footer-social a:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 800; margin-bottom: 18px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: rgba(255,255,255,0.5); transition: all .2s; }
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-disclaimer { font-size: 13px; line-height: 1.8; color: rgba(255,255,255,0.35); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; text-align: center; font-size: 13px; color: rgba(255,255,255,0.35); }

/* ===== 图片兜底 ===== */
.img-fallback { background: linear-gradient(135deg, #0EA5E9, #6366F1); position: relative; display: flex; align-items: center; justify-content: center; min-height: 160px; }
.img-fallback::after { content: ""; width: 60px; height: 60px; border-radius: 50%; border: 3px solid rgba(255,255,255,0.4); border-top-color: #fff; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .section { padding: 64px 0; }
  .nav-menu { gap: 4px; }
  .nav-item { padding: 10px 12px; font-size: 13px; }
  .feature-grid, .steps-grid { gap: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .nav-menu { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .category-hero { height: 280px; }
  .category-hero-content h1 { font-size: 32px; }
  .category-hero-content p { font-size: 15px; }
  .section-head h2 { font-size: 28px; }
  .feature-grid, .steps-grid { grid-template-columns: 1fr; }
  .timeline::before { left: 16px; }
  .timeline-item { flex-direction: column; align-items: flex-start; }
  .timeline-date { width: auto; text-align: left; padding-right: 0; padding-left: 48px; margin-bottom: 8px; }
  .timeline-date .year { font-size: 22px; }
  .timeline-card { width: 100%; padding-left: 48px; }
  .timeline-card .card-inner::before { left: -6px; }
  .cta-inner { flex-direction: column; text-align: center; }
  .cta-form, .cta-form input { width: 100%; justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .top-bar-inner { font-size: 12px; }
}
@media (max-width: 520px) {
  .nav-wrap { height: 64px; }
  .logo span { font-size: 16px; }
  .category-hero-content h1 { font-size: 26px; }
  .category-hero-actions { flex-direction: column; align-items: stretch; }
  .category-hero-actions .btn { width: 100%; }
  .timeline-card .card-inner { padding: 18px 20px; }
  .section-head h2 { font-size: 24px; }
  .section-head p { font-size: 14px; }
}

/* roulang page: category3 */
:root {
  --ice: #0EA5E9;
  --indigo: #6366F1;
  --deep: #312E81;
  --orange: #F97316;
  --teal: #22D3EE;
  --amber: #F59E0B;
  --bg-light: #F6F9FC;
  --bg-subtle: #EDF4F9;
  --bg-dark: #0F172A;
  --heading: #1E293B;
  --body: #475569;
  --muted: #94A3B8;
  --border: #E2E8F0;
  --r-lg: 24px;
  --r-md: 12px;
  --shadow: 0 4px 20px rgba(30,64,175,0.08);
  --shadow-hover: 0 12px 40px rgba(99,102,241,0.15);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  background: var(--bg-light);
  color: var(--body);
  line-height: 1.8;
  font-size: 16px;
}
a { color: inherit; text-decoration: none; transition: color .2s; }
img { max-width: 100%; display: block; }
button { border: none; cursor: pointer; font: inherit; }
ul, ol { list-style: none; }
a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(249,115,22,0.4);
  outline-offset: 2px;
}
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 顶部信息条 ===== */
.top-bar {
  background: var(--bg-dark);
  color: #C7D2FE;
  font-size: 13px;
  height: 36px;
  display: flex;
  align-items: center;
}
.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  gap: 16px;
}
.top-bar-msg { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top-bar-date { display: inline-flex; align-items: center; gap: 6px; flex-shrink: 0; }

/* ===== 导航面板 ===== */
.nav-wrap {
  background-color: var(--bg-dark);
  background-image:
    linear-gradient(rgba(99,102,241,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  border-bottom: 1px solid rgba(99,102,241,0.25);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav-panel {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 80px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
  font-size: 20px;
  white-space: nowrap;
  flex-shrink: 0;
}
.site-logo svg { width: 32px; height: 32px; color: var(--teal); }
.nav-menu {
  display: flex;
  gap: 10px;
  margin-left: auto;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  padding: 0 14px;
  border-radius: 12px;
  background: #334155;
  color: #CBD5E1;
  font-size: 14px;
  font-weight: 500;
  transition: all .2s ease;
  text-decoration: none;
}
.nav-item:hover {
  background: linear-gradient(135deg, #F97316, #F59E0B);
  color: #fff;
  transform: translateY(-1px);
}
.nav-item.active {
  background: linear-gradient(135deg, #F97316, #F59E0B);
  color: #fff;
  box-shadow: 0 0 0 4px rgba(249,115,22,0.15);
}
.nav-cta {
  background: linear-gradient(135deg, #F97316, #F59E0B);
  color: #fff;
  border-radius: 9999px;
  padding: 10px 22px;
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
  transition: all .2s ease;
  flex-shrink: 0;
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 4px rgba(249,115,22,0.15);
}
.nav-toggle {
  display: none;
  background: #334155;
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  font-size: 16px;
  align-items: center;
  justify-content: center;
  margin-left: auto;
}

/* ===== 分类 Hero ===== */
.cat-hero {
  min-height: 360px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(15,23,42,0.82) 0%, rgba(49,46,129,0.72) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color: #fff;
  position: relative;
}
.cat-hero::after {
  content: '';
  position: absolute;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(249,115,22,0.18), transparent 65%);
  right: -60px;
  bottom: -60px;
  border-radius: 50%;
  pointer-events: none;
}
.cat-hero-inner {
  padding: 64px 24px;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}
.cat-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 9999px;
  padding: 6px 16px;
  font-size: 13px;
  color: #C7D2FE;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.cat-hero h1 {
  font-size: clamp(32px, 4.5vw, 50px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.cat-hero-sub {
  font-size: 18px;
  color: #C7D2FE;
  max-width: 620px;
  margin-bottom: 28px;
  line-height: 1.7;
}
.cat-hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #F97316, #F59E0B);
  color: #fff;
  padding: 12px 28px;
  border-radius: 9999px;
  font-weight: 700;
  transition: all .2s;
  border: none;
  cursor: pointer;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 4px rgba(249,115,22,0.15);
}
.btn-primary:active { transform: translateY(0); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.08);
  border: 1.5px solid rgba(203,213,225,0.55);
  color: #fff;
  padding: 12px 28px;
  border-radius: 9999px;
  font-weight: 600;
  transition: all .2s;
  cursor: pointer;
}
.btn-secondary:hover {
  border-color: var(--orange);
  color: var(--orange);
}
.btn-secondary:active { transform: translateY(0); }

/* ===== 活动提示条 ===== */
.activity-alert {
  background: linear-gradient(135deg, #FFF7ED, #FFFBEB);
  border-bottom: 1px solid #FED7AA;
}
.activity-alert-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  font-size: 14px;
  flex-wrap: wrap;
}
.alert-dot {
  width: 8px;
  height: 8px;
  background: var(--orange);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
  flex-shrink: 0;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(249,115,22,0.4); }
  50% { box-shadow: 0 0 0 6px rgba(249,115,22,0); }
}
.alert-text { color: #7C2D12; font-weight: 500; }
.alert-link {
  color: var(--orange);
  font-weight: 600;
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.alert-link:hover { color: #EA580C; }

/* ===== 统计条 ===== */
.stat-strip {
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 32px 24px;
}
.stat-cell {
  text-align: center;
  border-right: 1px solid var(--border);
}
.stat-cell:last-child { border-right: 0; }
.stat-num {
  font-family: 'DIN Alternate', 'Arial Narrow', 'PingFang SC', sans-serif;
  font-size: 36px;
  font-weight: 700;
  color: var(--heading);
  display: block;
  line-height: 1.2;
}
.stat-label {
  font-size: 14px;
  color: var(--muted);
}

/* ===== 通用区块 ===== */
.section { padding: 96px 0; }
.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}
.section-head h2 {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 800;
  color: var(--heading);
  margin-bottom: 12px;
  line-height: 1.3;
}
.section-head p {
  font-size: 16px;
  color: var(--body);
}
.section-head.light h2 { color: #fff; }
.section-head.light p { color: #94A3B8; }

/* ===== 活动卡片 ===== */
.section-cards { background: var(--bg-light); }
.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.activity-card {
  background: #fff;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all .25s;
  position: relative;
  display: flex;
  flex-direction: column;
}
.activity-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(99,102,241,0.35);
}
.cover-wrap {
  position: relative;
  height: 190px;
  overflow: hidden;
  background: linear-gradient(135deg, #E0F2FE, #C7D2FE);
}
.cover-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cover-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(15,23,42,0.2));
  pointer-events: none;
}
.cover-wrap .cover-fallback-svg {
  display: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  color: #6366F1;
  z-index: 2;
}
.cover-wrap img.img-error { display: none; }
.cover-wrap.img-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
}
.cover-wrap.img-fallback .cover-fallback-svg { display: block; }
.activity-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 3;
  background: rgba(15,23,42,0.72);
  color: #fff;
  border-radius: 9999px;
  padding: 4px 12px;
  font-size: 12px;
  backdrop-filter: blur(4px);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}
.activity-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.activity-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.activity-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #E0F2FE;
  color: #0369A1;
  border-radius: 8px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
}
.activity-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 8px;
  line-height: 1.4;
}
.activity-desc {
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.activity-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px dashed #CBD5E1;
  padding: 14px 0 0;
  margin-top: auto;
  position: relative;
}
.activity-meta::before,
.activity-meta::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  background: #fff;
  border-radius: 50%;
  top: -9px;
  border: 1px solid #CBD5E1;
}
.activity-meta::before { left: -34px; }
.activity-meta::after { right: -34px; }
.activity-time {
  font-size: 13px;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.activity-view {
  font-size: 13px;
  font-weight: 600;
  color: var(--orange);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all .2s;
}
.activity-view:hover {
  color: #EA580C;
  gap: 10px;
}

/* ===== 时间轴 ===== */
.section-timeline {
  background: linear-gradient(180deg, #0F172A, #1E1B4B);
}
.timeline-wrap {
  border-radius: 24px;
  padding: 0;
  color: #fff;
}
.timeline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.timeline-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(99,102,241,0.25);
  border-radius: 16px;
  padding: 28px 24px 24px;
  position: relative;
  transition: all .25s;
}
.timeline-item:hover {
  border-color: rgba(249,115,22,0.45);
  background: rgba(255,255,255,0.08);
  transform: translateY(-3px);
}
.timeline-item::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 24px;
  width: 2px;
  height: 32px;
  background: linear-gradient(180deg, #F97316, transparent);
}
.timeline-item::after {
  content: '';
  position: absolute;
  top: -8px;
  left: 20px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #F97316;
  box-shadow: 0 0 12px rgba(249,115,22,0.6);
}
.timeline-time {
  font-family: 'DIN Alternate', 'Arial Narrow', sans-serif;
  font-size: 14px;
  color: var(--orange);
  font-weight: 700;
  display: block;
  margin-bottom: 10px;
  letter-spacing: 1px;
}
.timeline-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}
.timeline-desc {
  font-size: 14px;
  color: #94A3B8;
  line-height: 1.6;
}

/* ===== 步骤区 ===== */
.section-steps { background: var(--bg-subtle); }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.step-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 36px 28px;
  text-align: center;
  transition: all .25s;
}
.step-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.step-num {
  font-family: 'DIN Alternate', 'Arial Narrow', 'PingFang SC', sans-serif;
  font-size: 52px;
  font-weight: 700;
  line-height: 1;
  display: block;
  margin-bottom: 14px;
  background: linear-gradient(135deg, #0EA5E9, #6366F1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 10px;
}
.step-card p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.7;
}

/* ===== FAQ ===== */
.section-faq { background: var(--bg-light); }
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 24px;
  transition: box-shadow .2s;
}
.faq-item:hover {
  border-left: 4px solid var(--orange);
  box-shadow: var(--shadow);
}
.faq-q {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 16px;
  font-weight: 600;
  color: var(--heading);
  cursor: pointer;
}
.faq-q::before {
  content: '';
  width: 4px;
  height: 18px;
  background: var(--orange);
  border-radius: 4px;
  flex-shrink: 0;
}
.faq-icon {
  margin-left: auto;
  transition: transform .3s;
  color: var(--muted);
  flex-shrink: 0;
}
.faq-item.open .faq-icon {
  transform: rotate(180deg);
  color: var(--orange);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
  font-size: 14px;
  color: var(--body);
  line-height: 1.8;
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding-top: 12px;
}

/* ===== CTA 条幅 ===== */
.cta-banner {
  background: linear-gradient(120deg, #0F172A, #312E81, #1E3A8A);
  position: relative;
  overflow: hidden;
  color: #fff;
  padding: 68px 0;
}
.cta-banner::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(249,115,22,0.22), transparent 60%);
  right: -100px;
  bottom: -100px;
  border-radius: 50%;
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-content { max-width: 520px; }
.cta-title {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 10px;
  line-height: 1.3;
}
.cta-sub {
  color: #C7D2FE;
  font-size: 15px;
  margin-bottom: 20px;
}
.cta-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn-white-line {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1.5px solid rgba(255,255,255,0.5);
  color: #fff;
  padding: 12px 28px;
  border-radius: 9999px;
  font-weight: 600;
  transition: all .2s;
  cursor: pointer;
}
.btn-white-line:hover {
  border-color: var(--orange);
  color: var(--orange);
}
.subscribe-form {
  display: flex;
  gap: 8px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 9999px;
  padding: 6px;
  min-width: 360px;
}
.subscribe-form input {
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  padding: 8px 16px;
  font-size: 14px;
  flex: 1;
  min-width: 0;
}
.subscribe-form input::placeholder { color: rgba(255,255,255,0.6); }
.subscribe-form button {
  background: linear-gradient(135deg, #F97316, #F59E0B);
  color: #fff;
  border-radius: 9999px;
  padding: 10px 22px;
  font-weight: 600;
  transition: all .2s;
  white-space: nowrap;
}
.subscribe-form button:hover {
  box-shadow: 0 0 0 4px rgba(249,115,22,0.2);
}

/* ===== 页脚 ===== */
.site-footer {
  background: #0F172A;
  color: #CBD5E1;
  padding: 64px 0 0;
}
.footer-grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: 40px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
}
.footer-brand svg { width: 32px; height: 32px; color: var(--teal); }
.footer-desc {
  font-size: 14px;
  color: #94A3B8;
  line-height: 1.7;
  margin: 16px 0;
}
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #CBD5E1;
  transition: all .2s;
}
.footer-social a:hover {
  background: var(--orange);
  color: #fff;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  color: #94A3B8;
  font-size: 14px;
  transition: color .2s;
}
.footer-col ul li a:hover { color: var(--orange); }
.footer-disclaimer {
  font-size: 13px;
  color: #64748B;
  line-height: 1.7;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  margin-top: 48px;
  padding: 24px;
  text-align: center;
  color: #475569;
  font-size: 13px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .activity-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .subscribe-form { min-width: 300px; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .nav-panel { height: 64px; }
  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #0F172A;
    flex-direction: column;
    padding: 20px 24px;
    gap: 10px;
    transform: translateX(-100%);
    transition: transform .25s ease;
    z-index: 49;
    margin: 0;
    border-bottom: 1px solid rgba(99,102,241,0.3);
  }
  .nav-menu.open { transform: translateX(0); }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-cta { display: none; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); row-gap: 24px; }
  .stat-cell { border-right: 0; border-bottom: 1px solid var(--border); padding-bottom: 12px; }
  .stat-cell:last-child { border-bottom: 0; }
  .cat-hero { min-height: 320px; }
  .cat-hero-sub { font-size: 16px; }
  .cta-inner { flex-direction: column; text-align: center; align-items: center; }
  .cta-buttons { justify-content: center; }
  .subscribe-form { width: 100%; max-width: 420px; }
  .subscribe-form input { flex: 1; }
}
@media (max-width: 520px) {
  .activity-grid { grid-template-columns: 1fr; }
  .timeline-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .container, .nav-panel, .cat-hero-inner, .footer-grid { padding-left: 16px; padding-right: 16px; }
  .top-bar-date { display: none; }
  .cat-hero-actions .btn-primary,
  .cat-hero-actions .btn-secondary { width: 100%; justify-content: center; }
  .subscribe-form { flex-wrap: wrap; border-radius: 20px; padding: 12px; }
  .subscribe-form button { width: 100%; justify-content: center; }
}