/* roulang page: index */
/* ========== 设计变量 ========== */
:root {
  --primary: #0B6E6E;
  --primary-2: #17A398;
  --accent: #F97316;
  --accent-2: #FFB703;
  --bg: #FAF9F6;
  --bg-dark: #0A2E2E;
  --text: #162B2B;
  --text-muted: #60787A;
  --border: #DFE9E6;
  --glass: rgba(255, 255, 255, 0.72);
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-pill: 999px;
  --shadow-sm: 0 8px 30px rgba(10, 46, 46, 0.06);
  --shadow-md: 0 16px 40px rgba(10, 46, 46, 0.12);
  --transition: 0.2s ease;
  --container: 1200px;
  --font: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 32px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: var(--transition);
  white-space: nowrap;
  border: 2px solid transparent;
}

.btn-primary {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 8px 24px rgba(249, 115, 22, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(249, 115, 22, 0.36);
  filter: brightness(1.06);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

.btn-outline {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}

.btn-outline:hover {
  background: rgba(11, 110, 110, 0.06);
  transform: translateY(-2px);
}

.btn-outline:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn-lg {
  height: 54px;
  padding: 0 44px;
  font-size: 16px;
}

/* ========== 导航 ========== */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 32px);
  max-width: 1100px;
  height: 64px;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-pill);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255, 255, 255, 0.35);
  transition: box-shadow 0.3s ease;
}

.site-nav.scrolled {
  box-shadow: 0 12px 40px rgba(10, 46, 46, 0.14);
  background: rgba(255, 255, 255, 0.85);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 20px 0 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-badge {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.logo-text {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.01em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 18px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(11, 110, 110, 0.06);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(11, 110, 110, 0.12);
  font-weight: 600;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 22px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  flex-shrink: 0;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(249, 115, 22, 0.3);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  background: rgba(11, 110, 110, 0.08);
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(10, 46, 46, 0.94), rgba(11, 110, 110, 0.78)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  overflow: hidden;
  padding: 120px 0 80px;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 18px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.04em;
  margin-bottom: 28px;
  backdrop-filter: blur(6px);
}

.hero h1 {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
  letter-spacing: -0.01em;
  margin-bottom: 22px;
}

.hero-sub {
  font-size: clamp(15px, 1.6vw, 18px);
  color: rgba(255, 255, 255, 0.82);
  max-width: 680px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-ctas .btn-primary {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #fff;
}

.hero-ctas .btn-outline {
  border-color: rgba(255, 255, 255, 0.7);
  color: #fff;
}

.hero-ctas .btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.stat-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 130px;
  padding: 18px 22px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 22px;
  backdrop-filter: blur(8px);
}

.stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent-2);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.stat-num em {
  font-style: normal;
  font-size: 18px;
  font-weight: 700;
  margin-left: 1px;
}

.stat-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.78);
  margin-top: 6px;
  letter-spacing: 0.02em;
}

/* ========== 通用板块 ========== */
.section {
  padding: 96px 0;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
  background: rgba(11, 110, 110, 0.08);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
}

.section-head h2 {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.section-sub {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ========== 卖点区 ========== */
.features {
  padding: 96px 0;
  background: var(--bg);
}

.features-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  grid-template-rows: 1fr 1fr;
  gap: 24px;
  margin-top: 16px;
}

.feature-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(11, 110, 110, 0.3);
}

.feature-main {
  grid-row: 1 / 3;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 480px;
  background: linear-gradient(135deg, rgba(10, 46, 46, 0.9), rgba(11, 110, 110, 0.7)), url('/assets/images/coverpic/cover-1.png') center/cover no-repeat;
  border: none;
  color: #fff;
}

.feature-main:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 50px rgba(10, 46, 46, 0.3);
  border-color: transparent;
}

.feature-main .feature-num {
  position: absolute;
  top: 28px;
  left: 32px;
  font-size: 48px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.2);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.feature-main .feature-icon {
  width: 52px;
  height: 52px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(4px);
}

.feature-main h3 {
  font-size: 26px;
  color: #fff;
  margin-bottom: 12px;
}

.feature-main p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
  max-width: 420px;
}

.feature-main .feature-link {
  color: var(--accent-2);
}

.feature-main .feature-link:hover {
  color: #fff;
}

.feature-side {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 24px;
}

.feature-side .feature-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.feature-num {
  position: absolute;
  top: 22px;
  right: 26px;
  font-size: 32px;
  font-weight: 800;
  color: rgba(11, 110, 110, 0.14);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(11, 110, 110, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 14px;
}

.feature-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  opacity: 0.85;
}

.feature-link:hover {
  gap: 10px;
  opacity: 1;
}

/* ========== 场景演示区 ========== */
.scenario {
  padding: 96px 0;
  background: var(--bg-dark);
  color: #fff;
}

.scenario-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.scenario-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.scenario-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 380px;
}

.scenario-content .section-eyebrow {
  background: rgba(23, 163, 152, 0.2);
  color: var(--accent-2);
}

.scenario-content h2 {
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 800;
  margin-bottom: 40px;
  line-height: 1.2;
  color: #fff;
}

.scenario-steps {
  list-style: none;
  padding: 0;
  margin-bottom: 40px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.scenario-steps li {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.scenario-steps li:last-child {
  border-bottom: none;
}

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
  margin-top: 2px;
}

.scenario-steps h3 {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.scenario-steps p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

.scenario-content .btn-primary {
  margin-top: 8px;
}

/* ========== 最新资讯 ========== */
.latest {
  padding: 96px 0;
  background: var(--bg);
}

.section-head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 44px;
}

.section-head-row h2 {
  font-size: clamp(28px, 3vw, 36px);
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
}

.section-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: rgba(11, 110, 110, 0.07);
  transition: var(--transition);
  flex-shrink: 0;
}

.section-more:hover {
  background: rgba(11, 110, 110, 0.14);
  gap: 10px;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.post-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(11, 110, 110, 0.25);
}

.post-thumb {
  height: 180px;
  overflow: hidden;
  background: #f0f3f2;
  position: relative;
}

.post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.post-card:hover .post-thumb img {
  transform: scale(1.05);
}

.post-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px 24px 20px;
}

.post-meta-top {
  margin-bottom: 10px;
}

.post-cat {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(11, 110, 110, 0.1);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}

.post-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-meta-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid #edf2f0;
}

.post-date {
  font-size: 13px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.post-arrow {
  font-size: 16px;
  color: var(--accent);
  font-weight: 700;
  transition: var(--transition);
}

.post-card:hover .post-arrow {
  transform: translateX(4px);
}

/* 空态 */
.empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 0;
}

.empty-box {
  border: 2px dashed var(--border);
  border-radius: 22px;
  padding: 48px 64px;
  text-align: center;
  background: #fff;
  transition: var(--transition);
}

.empty-icon {
  font-size: 36px;
  display: block;
  margin-bottom: 14px;
}

.empty-box p {
  font-size: 15px;
  color: var(--text-muted);
}

/* ========== 社会认同 ========== */
.social-proof {
  padding: 96px 0;
  background: #fff;
}

.proof-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 64px;
  background: linear-gradient(135deg, var(--bg-dark), #0d3d3d);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
}

.proof-stat {
  text-align: center;
  padding: 16px 8px;
}

.proof-num {
  display: block;
  font-size: 34px;
  font-weight: 800;
  color: var(--accent-2);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  margin-bottom: 6px;
}

.proof-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
  letter-spacing: 0.04em;
}

.social-proof .section-head {
  margin-bottom: 44px;
}

.testimonials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.testimonial-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.testimonial-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

.testimonial-card p {
  font-size: 14px;
  color: var(--text);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 16px;
  font-style: italic;
}

.testimonial-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

.testimonial-role {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ========== FAQ ========== */
.faq-section {
  padding: 96px 0;
  background: var(--bg);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(11, 110, 110, 0.25);
  box-shadow: var(--shadow-sm);
}

.faq-item[open] {
  border-color: rgba(11, 110, 110, 0.4);
  box-shadow: var(--shadow-sm);
}

.faq-summary {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 22px 26px;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background 0.2s ease;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-summary:hover {
  background: rgba(11, 110, 110, 0.03);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(11, 110, 110, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
}

.faq-summary-text {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
}

.faq-toggle-icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.faq-toggle-icon::before,
.faq-toggle-icon::after {
  content: '';
  position: absolute;
  background: var(--primary);
  border-radius: 2px;
  transition: transform 0.35s ease;
}

.faq-toggle-icon::before {
  width: 18px;
  height: 2px;
  top: 9px;
  left: 1px;
}

.faq-toggle-icon::after {
  width: 2px;
  height: 18px;
  top: 1px;
  left: 9px;
}

.faq-item[open] .faq-toggle-icon {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 26px 26px 70px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== 底部固定转化条 ========== */
.sticky-cta {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 900;
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-dark);
  color: #fff;
  border-radius: var(--radius-pill);
  padding: 10px 10px 10px 24px;
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition);
}

.sticky-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.sticky-cta-text {
  font-size: 13px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  white-space: nowrap;
}

.sticky-cta .btn {
  height: 38px;
  padding: 0 22px;
  font-size: 13px;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo-badge {
  margin-bottom: 16px;
}

.footer-brand .logo-text {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: block;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  max-width: 360px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--accent-2);
  padding-left: 4px;
}

.footer-news li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.5;
}

.footer-news li::before {
  content: '•';
  color: var(--accent);
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.footer-bottom .sep {
  opacity: 0.4;
}

/* ========== 响应式 ========== */
@media (max-width: 1023px) {
  .features-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }
  .feature-main {
    grid-row: auto;
    min-height: 320px;
  }
  .feature-side {
    grid-template-rows: none;
    grid-template-columns: 1fr 1fr;
  }
  .post-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .testimonials {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .scenario-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .scenario-media {
    max-height: 320px;
  }
  .scenario-media img {
    min-height: 0;
  }
  .proof-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 767px) {
  .section {
    padding: 64px 0;
  }
  .features {
    padding: 64px 0;
  }
  .scenario {
    padding: 64px 0;
  }
  .latest {
    padding: 64px 0;
  }
  .social-proof {
    padding: 64px 0;
  }
  .faq-section {
    padding: 64px 0;
  }
  
  .site-nav {
    top: 10px;
    height: 58px;
    width: calc(100% - 16px);
  }
  .nav-inner {
    padding: 0 14px 0 16px;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    border-radius: 20px;
    flex-direction: column;
    padding: 12px;
    gap: 2px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-link {
    width: 100%;
    justify-content: flex-start;
    height: 46px;
    padding: 0 16px;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-cta {
    display: none;
  }
  
  .hero {
    padding: 100px 24px 60px;
  }
  .hero-stats {
    gap: 10px;
  }
  .stat-badge {
    min-width: calc(50% - 10px);
    padding: 14px 16px;
  }
  .stat-num {
    font-size: 24px;
  }
  
  .features-grid {
    gap: 16px;
  }
  .feature-side {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .feature-card {
    padding: 26px 22px;
  }
  .feature-main {
    min-height: 260px;
  }
  
  .section-head-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .post-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .post-thumb {
    height: 160px;
  }
  
  .proof-stats {
    grid-template-columns: repeat(2, 1fr);
    padding: 24px 16px;
    gap: 8px;
  }
  .proof-num {
    font-size: 26px;
  }
  
  .testimonials {
    max-width: 100%;
  }
  
  .faq-summary {
    padding: 18px 16px;
  }
  .faq-answer {
    padding: 0 16px 20px 54px;
  }
  
  .sticky-cta {
    left: 12px;
    right: 12px;
    bottom: 12px;
    border-radius: 16px;
    justify-content: space-between;
    padding: 10px 12px 10px 18px;
  }
  .sticky-cta-text {
    font-size: 13px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-brand {
    grid-column: auto;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 4px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 36px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-ctas {
    flex-direction: column;
    width: 100%;
  }
  .hero-ctas .btn {
    width: 100%;
  }
  .stat-badge {
    min-width: calc(50% - 8px);
  }
}

/* roulang page: category1 */
:root {
  --primary: #0B6E6E;
  --primary-2: #17A398;
  --accent: #F97316;
  --accent-2: #FFB703;
  --bg: #FAF9F6;
  --bg-dark: #0A2E2E;
  --text: #162B2B;
  --text-muted: #60787A;
  --border: #DFE9E6;
  --glass: rgba(255,255,255,0.72);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-pill: 999px;
  --shadow-sm: 0 8px 30px rgba(10,46,46,0.06);
  --shadow-lg: 0 16px 40px rgba(10,46,46,0.12);
  --transition: 0.2s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-2); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ========== 导航 ========== */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 32px);
  max-width: 1100px;
  height: 64px;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
.site-nav.scrolled {
  box-shadow: var(--shadow-lg);
  background: rgba(255,255,255,0.88);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 20px 0 24px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 19px;
  color: var(--text);
}
.nav-logo:hover { color: var(--text); }
.logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.5px;
}
.logo-text { font-weight: 800; font-size: 19px; white-space: nowrap; }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: var(--transition);
}
.nav-link:hover {
  background: rgba(11,110,110,0.08);
  color: var(--primary);
}
.nav-link.active {
  background: rgba(11,110,110,0.12);
  color: var(--primary);
  font-weight: 600;
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0 22px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(249,115,22,0.25);
  transition: var(--transition);
}
.nav-cta:hover {
  box-shadow: 0 6px 22px rgba(249,115,22,0.35);
  transform: translateY(-2px);
  color: #fff;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: 50%;
  background: rgba(11,110,110,0.08);
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== 分类 Hero ========== */
.category-hero {
  position: relative;
  padding: 140px 0 80px;
  background: linear-gradient(135deg, rgba(10,46,46,0.88), rgba(11,110,110,0.76)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  overflow: hidden;
}
.category-hero::after {
  content: '';
  position: absolute;
  right: -80px;
  top: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,183,3,0.15), transparent 70%);
  pointer-events: none;
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 14px;
  color: rgba(255,255,255,0.85);
}
.hero-meta a {
  color: rgba(255,255,255,0.85);
}
.hero-meta a:hover { color: var(--accent-2); }
.hero-meta .sep { opacity: 0.5; }
.hero-meta .current { color: var(--accent-2); font-weight: 600; }
.category-hero h1 {
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}
.category-hero .subtitle {
  max-width: 680px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.9);
  margin-bottom: 28px;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.14);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.18);
}

/* ========== 主体双栏 ========== */
.category-main {
  padding: 80px 0 0;
}
.category-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}
.category-content h2 {
  font-size: clamp(26px, 2.6vw, 34px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.guide-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.guide-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: rgba(11,110,110,0.25);
}
.guide-card-cover {
  position: relative;
  height: 180px;
  overflow: hidden;
  background: #E8EFED;
}
.guide-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.guide-card:hover .guide-card-cover img {
  transform: scale(1.04);
}
.guide-card-cover .card-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.92);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.guide-card-body {
  padding: 22px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.guide-card-body h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text);
}
.guide-card-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
}
.guide-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.guide-card-link i {
  transition: transform 0.2s ease;
}
.guide-card:hover .guide-card-link i {
  transform: translateX(4px);
}

/* ========== 侧边栏 ========== */
.category-sidebar {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.sidebar-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.sidebar-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(11,110,110,0.1);
  position: relative;
}
.sidebar-card h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 44px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.side-nav-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.side-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  background: rgba(11,110,110,0.04);
  border: 1px solid transparent;
  transition: var(--transition);
}
.side-nav-item:hover {
  background: rgba(11,110,110,0.08);
  border-color: rgba(11,110,110,0.15);
  color: var(--primary);
}
.side-nav-item i {
  width: 20px;
  text-align: center;
  color: var(--primary);
  font-size: 13px;
}
.sidebar-cta {
  background: linear-gradient(135deg, var(--bg-dark), #114D4D);
  border: none;
  color: #fff;
  text-align: center;
  padding: 32px 24px;
}
.sidebar-cta h3 {
  color: #fff;
  border-bottom-color: rgba(255,255,255,0.15);
}
.sidebar-cta h3::after {
  background: var(--accent);
}
.sidebar-cta p {
  font-size: 14px;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  margin-bottom: 20px;
}
.btn-sider {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 26px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(249,115,22,0.3);
}
.btn-sider:hover {
  box-shadow: 0 6px 24px rgba(249,115,22,0.4);
  transform: translateY(-2px);
  color: #fff;
}

/* ========== CTA 区块 ========== */
.category-cta {
  margin: 80px 0 0;
  padding: 72px 0;
  background: linear-gradient(135deg, rgba(10,46,46,0.92), rgba(11,110,110,0.82)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  text-align: center;
}
.category-cta h2 {
  font-size: clamp(26px, 3vw, 36px);
  color: #fff;
  font-weight: 800;
  margin-bottom: 12px;
}
.category-cta p {
  color: rgba(255,255,255,0.85);
  font-size: 15px;
  max-width: 520px;
  margin: 0 auto 28px;
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 50px;
  padding: 0 36px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  box-shadow: 0 6px 20px rgba(249,115,22,0.35);
  transition: var(--transition);
}
.btn-cta:hover {
  box-shadow: 0 8px 28px rgba(249,115,22,0.45);
  transform: translateY(-3px);
  color: #fff;
}

/* ========== FAQ ========== */
.faq-section {
  padding: 80px 0;
}
.faq-header {
  text-align: center;
  margin-bottom: 44px;
}
.faq-header h2 {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 800;
  margin-bottom: 8px;
}
.faq-header p {
  color: var(--text-muted);
  font-size: 15px;
}
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0 24px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open {
  border-color: rgba(11,110,110,0.35);
  box-shadow: var(--shadow-sm);
}
.faq-question {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 22px 0;
  cursor: pointer;
  user-select: none;
}
.faq-q-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(11,110,110,0.1);
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
}
.faq-question h3 {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
}
.faq-toggle {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(11,110,110,0.06);
  position: relative;
  transition: var(--transition);
}
.faq-toggle::before,
.faq-toggle::after {
  content: '';
  position: absolute;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}
.faq-toggle::before {
  width: 12px;
  height: 2px;
}
.faq-toggle::after {
  width: 2px;
  height: 12px;
}
.faq-item.open .faq-toggle {
  transform: rotate(45deg);
  background: rgba(11,110,110,0.12);
}
.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s ease;
}
.faq-item.open .faq-answer {
  grid-template-rows: 1fr;
}
.faq-answer-inner {
  overflow: hidden;
}
.faq-answer-inner p {
  padding: 0 0 22px 46px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.75);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand .logo-badge {
  width: 40px;
  height: 40px;
  font-size: 16px;
  margin-bottom: 14px;
}
.footer-brand .logo-text {
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  display: block;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
  max-width: 320px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
}
.footer-col a:hover {
  color: var(--accent-2);
}
.footer-news li {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}
.footer-news li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--accent);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  text-align: center;
}
.footer-bottom .sep {
  opacity: 0.4;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .category-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .category-sidebar {
    position: static;
    flex-direction: row;
    align-items: stretch;
  }
  .sidebar-card {
    flex: 1;
  }
  .guide-grid {
    gap: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .site-nav {
    top: 12px;
    width: calc(100% - 24px);
    height: 58px;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-menu {
    position: absolute;
    top: 68px;
    left: 12px;
    right: 12px;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(16px);
    border-radius: 20px;
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition: var(--transition);
  }
  .nav-menu.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .nav-link {
    padding: 12px 16px;
    border-radius: 12px;
    text-align: center;
  }
  .nav-cta {
    display: none;
  }
  .category-hero {
    padding: 120px 0 56px;
  }
  .category-main {
    padding: 56px 0 0;
  }
  .category-grid {
    gap: 24px;
  }
  .guide-grid {
    grid-template-columns: 1fr;
  }
  .category-sidebar {
    flex-direction: column;
  }
  .category-cta {
    margin-top: 56px;
    padding: 56px 0;
  }
  .faq-section {
    padding: 56px 0;
  }
  .faq-answer-inner p {
    padding-left: 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .nav-logo .logo-text {
    font-size: 17px;
  }
  .logo-badge {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }
  .category-hero h1 {
    font-size: 32px;
  }
  .category-hero .subtitle {
    font-size: 14px;
  }
  .guide-card-cover {
    height: 160px;
  }
  .faq-item {
    padding: 0 18px;
  }
  .faq-question h3 {
    font-size: 15px;
  }
}

/* roulang page: article */
:root {
  --primary: #0B6E6E;
  --primary-2: #17A398;
  --accent: #F97316;
  --accent-2: #FFB703;
  --bg: #FAF9F6;
  --bg-dark: #0A2E2E;
  --text: #162B2B;
  --text-muted: #60787A;
  --border: #DFE9E6;
  --glass: rgba(255, 255, 255, 0.72);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --shadow-md: 0 8px 30px rgba(10, 46, 46, 0.06);
  --shadow-lg: 0 16px 40px rgba(10, 46, 46, 0.12);
  --gradient-primary: linear-gradient(135deg, var(--primary), var(--primary-2));
  --gradient-accent: linear-gradient(90deg, var(--accent), var(--accent-2));
  --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", Menlo, Consolas, "Courier New", monospace;
  --content-width: 1200px;
  --read-width: 720px;
}

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

html {
  scroll-behavior: smooth;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

input,
textarea {
  font-family: inherit;
}

.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  transition: all 0.2s ease;
  letter-spacing: 0.3px;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(249, 115, 22, 0.36);
  filter: brightness(1.05);
}

.btn-primary:focus-visible {
  outline: 2px solid #b45309;
  outline-offset: 2px;
}

.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
}

.btn-outline:hover {
  background: rgba(11, 110, 110, 0.06);
  transform: translateY(-2px);
}

.btn-outline:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn-dark {
  background: var(--bg-dark);
  color: #fff;
}

.btn-dark:hover {
  background: #123d3d;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-sm {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
}

/* 标签 */
.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background: rgba(11, 110, 110, 0.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.4px;
}

.tag-pill-accent {
  background: rgba(249, 115, 22, 0.1);
  color: var(--accent);
}

/* 悬浮胶囊导航 */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 48px);
  max-width: 1100px;
  height: 64px;
  z-index: 1000;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 4px 20px rgba(10, 46, 46, 0.08);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

.site-nav.nav-scrolled {
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 8px 32px rgba(10, 46, 46, 0.14);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 16px 0 20px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--gradient-primary);
  color: #fff;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(11, 110, 110, 0.3);
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.5px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
  padding: 0 12px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 18px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: all 0.2s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(11, 110, 110, 0.06);
}

.nav-link.active {
  background: rgba(11, 110, 110, 0.1);
  color: var(--primary);
  font-weight: 600;
}

.nav-link:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 22px;
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.3);
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(249, 115, 22, 0.4);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: transparent;
  transition: background 0.2s ease;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle.toggle-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.toggle-active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.toggle-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 文章横幅 */
.article-banner {
  margin-top: 80px;
  padding: 44px 0 36px;
  background: linear-gradient(135deg, rgba(10, 46, 46, 0.9), rgba(23, 163, 152, 0.7)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb-sep {
  opacity: 0.5;
}

.breadcrumb .current {
  color: #fff;
  font-weight: 600;
  max-width: 300px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.category-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  white-space: nowrap;
}

/* 文章主体 */
.article-main {
  padding: 56px 0 0;
}

.article-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}

.article-header {
  text-align: center;
  margin-bottom: 40px;
}

.article-header h1 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--text);
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 24px;
  color: var(--text-muted);
  font-size: 14px;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.meta-item svg {
  width: 16px;
  height: 16px;
  opacity: 0.6;
}

.article-body {
  max-width: var(--read-width);
  margin: 0 auto;
  padding: 40px 0 56px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--text);
}

.article-body > * + * {
  margin-top: 24px;
}

.article-body p {
  line-height: 1.9;
}

.article-body h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 800;
  color: var(--text);
  line-height: 1.4;
  margin-top: 48px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid rgba(11, 110, 110, 0.1);
}

.article-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.5;
  margin-top: 32px;
  margin-bottom: 12px;
}

.article-body h4 {
  font-size: 17px;
  font-weight: 700;
  margin-top: 24px;
  margin-bottom: 10px;
}

.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: rgba(11, 110, 110, 0.06);
  padding: 18px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 32px 0;
  color: var(--text);
  font-size: 16px;
}

.article-body blockquote p {
  margin-bottom: 0;
}

.article-body img {
  border-radius: 20px;
  width: 100%;
  height: auto;
  margin: 32px 0;
  box-shadow: var(--shadow-md);
}

.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

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

.article-body ul,
.article-body ol {
  margin: 20px 0 28px;
  padding-left: 28px;
}

.article-body ul {
  list-style: disc;
}

.article-body ol {
  list-style: decimal;
}

.article-body li {
  margin-bottom: 8px;
  line-height: 1.8;
}

.article-body li::marker {
  color: var(--primary);
  font-weight: 700;
}

.article-body code {
  font-family: var(--font-mono);
  background: rgba(11, 110, 110, 0.08);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 14px;
  color: var(--primary);
}

.article-body pre {
  background: var(--bg-dark);
  color: #e8f5f2;
  border-radius: var(--radius-md);
  padding: 20px 24px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  margin: 28px 0;
}

.article-body pre code {
  background: transparent;
  color: inherit;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}

.article-body th {
  background: rgba(11, 110, 110, 0.06);
  font-weight: 700;
  color: var(--text);
}

.article-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

.article-body strong {
  font-weight: 700;
  color: var(--text);
}

/* 文末 */
.article-footer {
  max-width: var(--read-width);
  margin: 0 auto;
  padding: 0 0 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  border-bottom: 1px solid var(--border);
}

.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.article-tags .tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background: rgba(11, 110, 110, 0.07);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.article-tags .tag:hover {
  background: rgba(11, 110, 110, 0.14);
  transform: translateY(-1px);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 4px;
  transition: color 0.2s ease, transform 0.2s ease;
}

.back-link:hover {
  color: var(--accent);
  transform: translateX(-4px);
}

/* 内容未找到 */
.article-empty {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
}

.article-empty h1 {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
}

.article-empty .btn {
  margin-top: 8px;
}

/* 相关推荐 */
.related-section {
  padding: 72px 0;
}

.related-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.related-header h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.5px;
}

.related-header a {
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: color 0.2s ease;
}

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

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(11, 110, 110, 0.3);
}

.related-card-img {
  height: 180px;
  width: 100%;
  object-fit: cover;
  position: relative;
  overflow: hidden;
}

.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.related-card:hover .related-card-img img {
  transform: scale(1.05);
}

.related-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.related-card-body .tag-pill {
  align-self: flex-start;
}

.related-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  transition: color 0.2s ease;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.related-card-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
}

.related-card-footer a {
  color: var(--primary);
  font-weight: 600;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s ease;
}

.related-card-footer a:hover {
  gap: 8px;
}

/* CTA 区块 */
.cta-section {
  padding: 48px 0 96px;
}

.cta-card {
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.cta-card::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -5%;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
}

.cta-card h3 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-card p {
  font-size: 15px;
  opacity: 0.9;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.cta-card .btn {
  position: relative;
  z-index: 1;
}

/* 页脚 */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 64px 0 0;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .logo-badge {
  width: 42px;
  height: 42px;
  font-size: 16px;
  border-radius: 14px;
}

.footer-brand .logo-text {
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  margin-left: 10px;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 360px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: color 0.2s ease, padding-left 0.2s ease;
  display: inline-block;
}

.footer-col ul li a:hover {
  color: var(--accent-2);
  padding-left: 6px;
}

.footer-news {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
}

.footer-news li {
  padding-left: 14px;
  position: relative;
}

.footer-news li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom .sep {
  opacity: 0.4;
}

/* 响应式 */
@media (max-width: 1023px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .related-card:last-child {
    grid-column: span 2;
  }

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

  .footer-brand {
    grid-column: span 2;
  }
}

@media (max-width: 767px) {
  .site-nav {
    top: 8px;
    width: calc(100% - 20px);
    height: 58px;
    border-radius: 18px;
  }

  .nav-inner {
    padding: 0 12px;
  }

  .logo-badge {
    width: 32px;
    height: 32px;
    font-size: 13px;
    border-radius: 10px;
  }

  .logo-text {
    font-size: 17px;
  }

  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    background: var(--glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 18px;
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.5);
  }

  .nav-menu.nav-open {
    display: flex;
  }

  .nav-link {
    height: 44px;
    justify-content: center;
    font-size: 15px;
  }

  .article-banner {
    margin-top: 66px;
    padding: 32px 0 24px;
  }

  .banner-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .breadcrumb .current {
    max-width: 220px;
  }

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

  .article-container {
    padding: 0 16px;
  }

  .article-header {
    margin-bottom: 24px;
  }

  .article-body {
    padding: 24px 0 40px;
    font-size: 16px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .article-body blockquote {
    padding: 14px 18px;
  }

  .article-footer {
    padding: 0 16px 32px;
    flex-direction: column;
    align-items: flex-start;
  }

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

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

  .related-card:last-child {
    grid-column: auto;
  }

  .related-card-img {
    height: 160px;
  }

  .cta-section {
    padding: 32px 0 120px;
  }

  .cta-card {
    padding: 40px 24px;
    border-radius: 20px;
  }

  .cta-card h3 {
    font-size: 22px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 4px;
  }

  .footer-bottom .sep {
    display: none;
  }
}

@media (max-width: 520px) {
  .related-card-body {
    padding: 18px;
  }

  .article-meta {
    gap: 8px 16px;
    font-size: 13px;
  }

  .meta-item svg {
    width: 14px;
    height: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}