/* roulang page: index */
:root {
  --bg: #0A1428;
  --bg-elev: #101D35;
  --glass: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.12);
  --primary: #2B7FFF;
  --primary-hover: #4A96FF;
  --accent: #17E6C8;
  --text: #E8EEFF;
  --text-secondary: #9AA8C7;
  --success: #34D399;
  --warning: #FBBF24;
  --danger: #F87171;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-primary: 0 0 24px rgba(43, 127, 255, 0.45);
  --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Source Han Sans SC', sans-serif;
}

*,
*::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);
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  position: relative;
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  top: -200px;
  right: -180px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(43, 127, 255, 0.14), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s ease;
}

a:hover {
  color: var(--primary-hover);
}

button,
input,
select,
textarea {
  font-family: var(--font);
  font-size: 14px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 主布局 ===== */
.main-wrap {
  margin-left: 88px;
  position: relative;
  z-index: 1;
}

.section {
  padding: clamp(64px, 8vw, 96px) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 12px;
  display: inline-block;
  position: relative;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.section-header p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-top: 14px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  line-height: 1.4;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, #2B7FFF, #1A6AE5);
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4A96FF, #2B7FFF);
  box-shadow: 0 0 36px rgba(43, 127, 255, 0.7);
  transform: translateY(-1px);
  color: #fff;
}

.btn-outline {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text);
  backdrop-filter: blur(8px);
}

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

.btn-lg {
  padding: 14px 36px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

.btn-disabled,
.btn:disabled {
  background: #3a4a66;
  box-shadow: none;
  cursor: not-allowed;
  color: rgba(255, 255, 255, 0.6);
  transform: none;
}

/* ===== 标签 / 徽章 ===== */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(43, 127, 255, 0.1);
  color: var(--primary-hover);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  white-space: nowrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text);
  font-size: 13px;
  backdrop-filter: blur(8px);
}

.badge i {
  color: var(--accent);
  font-size: 13px;
}

/* ===== 左侧导航 ===== */
.side-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 88px;
  height: 100vh;
  background: #0D1930;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 0 16px;
}

.side-nav::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent), rgba(23, 230, 200, 0.05));
}

.nav-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  margin-bottom: 28px;
  transition: opacity 0.3s ease;
}

.nav-brand:hover {
  opacity: 0.85;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #1A6AE5);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 16px rgba(43, 127, 255, 0.4);
}

.brand-text {
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.15em;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  line-height: 1.2;
  max-height: 76px;
}

.nav-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  padding: 0 10px;
  flex: 1;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  height: 54px;
  border-radius: 12px;
  color: var(--text-secondary);
  font-size: 10px;
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  line-height: 1.2;
  white-space: nowrap;
}

.nav-item i {
  font-size: 18px;
  transition: color 0.3s ease;
}

.nav-item:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.nav-item.active {
  color: var(--primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: -10px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 22px;
  background: var(--primary);
  border-radius: 0 3px 3px 0;
}

.nav-item.active i {
  color: var(--primary);
}

.nav-footer {
  padding-top: 12px;
  width: 100%;
  display: flex;
  justify-content: center;
}

.nav-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #1A6AE5);
  color: #fff;
  font-size: 14px;
  box-shadow: var(--shadow-primary);
  transition: all 0.3s ease;
  text-decoration: none;
}

.nav-cta:hover {
  box-shadow: 0 0 36px rgba(43, 127, 255, 0.7);
  transform: translateY(-2px);
  color: #fff;
}

/* ===== 移动端顶部导航 ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(13, 25, 48, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 200;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.mobile-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  text-decoration: none;
}

.mobile-logo span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), #1A6AE5);
  font-size: 12px;
  font-weight: 800;
  color: #fff;
}

.nav-toggle {
  width: 44px;
  height: 44px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: 8px;
  transition: background 0.3s ease;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
}

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

.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);
}

.mobile-drawer {
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 20, 40, 0.97);
  backdrop-filter: blur(16px);
  z-index: 190;
  display: flex;
  flex-direction: column;
  padding: 24px;
  transform: translateX(100%);
  transition: transform 0.35s ease;
  overflow-y: auto;
}

.mobile-drawer.open {
  transform: translateX(0);
}

.mobile-drawer a {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 56px;
  color: var(--text);
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.3s ease;
  min-height: 48px;
}

.mobile-drawer a i {
  width: 20px;
  text-align: center;
  color: var(--text-secondary);
}

.mobile-drawer a:hover,
.mobile-drawer a.active {
  color: var(--primary);
}

.mobile-drawer a.active i {
  color: var(--primary);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: clamp(80px, 10vw, 120px) 0;
  background: linear-gradient(rgba(10, 20, 40, 0.82), rgba(10, 20, 40, 0.88)),
              url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 30%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(43, 127, 255, 0.18), transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -120px;
  right: 10%;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(23, 230, 200, 0.1), transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 560px;
}

.hero h1 {
  font-size: clamp(32px, 4.5vw, 46px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
  color: var(--text);
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.hero-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.login-demo {
  width: 320px;
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

.login-demo-header {
  display: flex;
  gap: 6px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.login-demo-header .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.login-demo-header .dot:nth-child(1) {
  background: #F87171;
}

.login-demo-header .dot:nth-child(2) {
  background: #FBBF24;
}

.login-demo-header .dot:nth-child(3) {
  background: #34D399;
}

.login-demo-body {
  padding: 32px 24px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.demo-logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.demo-input {
  width: 100%;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.demo-input i {
  color: var(--primary);
  font-size: 14px;
}

.demo-btn {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, #2B7FFF, #1A6AE5);
  border-radius: 10px;
  text-align: center;
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 0 20px rgba(43, 127, 255, 0.4);
}

.hero-scroll {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 44px;
  display: flex;
  justify-content: center;
  z-index: 2;
}

.scroll-line {
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent), transparent);
  position: relative;
  overflow: hidden;
  border-radius: 2px;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -60%;
  left: 0;
  width: 100%;
  height: 50%;
  background: #fff;
  animation: scrollDown 2.2s ease infinite;
}

@keyframes scrollDown {
  0% {
    top: -60%;
  }
  50% {
    top: 100%;
  }
  100% {
    top: 100%;
  }
}

/* ===== 三步上手 ===== */
.steps-section {
  position: relative;
}

.steps-timeline {
  max-width: 680px;
  margin: 0 auto;
}

.step-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 24px 28px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
  transition: all 0.3s ease;
  position: relative;
}

.step-item:hover {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.step-number {
  font-size: 40px;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.9;
  font-feature-settings: 'tnum';
  min-width: 58px;
  line-height: 1;
}

.step-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(43, 127, 255, 0.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.step-content {
  flex: 1;
}

.step-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}

.step-content p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.step-connector {
  width: 2px;
  height: 44px;
  margin: 6px auto;
  background: linear-gradient(180deg, var(--primary), transparent);
  opacity: 0.5;
  border-radius: 2px;
}

/* ===== 案例证明 ===== */
.cases-section {
  background: var(--bg-elev);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}

.metric-item {
  text-align: center;
  padding: 32px 16px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
}

.metric-item:hover {
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-4px);
}

.metric-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  font-feature-settings: 'tnum';
  line-height: 1.2;
  margin-bottom: 8px;
}

.metric-label {
  font-size: 14px;
  color: var(--text-secondary);
}

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

.case-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
  backdrop-filter: blur(14px);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.case-card:hover {
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.case-card-img {
  height: 200px;
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

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

.case-card:hover .case-card-img img {
  transform: scale(1.03);
}

.case-info {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.case-info h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.case-info p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}

.case-link {
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s ease;
}

.case-link:hover {
  gap: 10px;
}

/* ===== FAQ ===== */
.faq-grid {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
  overflow: hidden;
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.faq-item.open {
  background: rgba(43, 127, 255, 0.08);
  border-color: rgba(43, 127, 255, 0.3);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: color 0.3s ease;
  line-height: 1.4;
}

.faq-question i {
  color: var(--text-secondary);
  font-size: 14px;
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-question i {
  transform: rotate(45deg);
  color: var(--accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
}

.faq-item.open .faq-answer {
  max-height: 200px;
  padding: 0 24px 20px;
}

.faq-answer p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  border-left: 2px solid var(--accent);
  padding-left: 14px;
}

/* ===== 立即开通表单 ===== */
.apply-section {
  background: linear-gradient(rgba(16, 29, 53, 0.7), rgba(10, 20, 40, 0.9)),
              url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.apply-card {
  max-width: 720px;
  margin: 0 auto;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 40px 44px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
}

.apply-card::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(23, 230, 200, 0.18), transparent 70%);
  pointer-events: none;
}

.apply-header {
  text-align: center;
  margin-bottom: 32px;
}

.apply-header h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
}

.apply-header p {
  color: var(--text-secondary);
  font-size: 14px;
}

.apply-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  position: relative;
  z-index: 2;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
  width: 100%;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(154, 168, 199, 0.6);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(43, 127, 255, 0.06);
  box-shadow: 0 0 0 3px rgba(43, 127, 255, 0.15);
}

.form-group select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239AA8C7' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer;
}

.form-group select option {
  background: #101D35;
  color: var(--text);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-note {
  text-align: center;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.form-note i {
  color: var(--success);
  font-size: 13px;
}

/* ===== 资讯列表 ===== */
.news-list {
  max-width: 860px;
  margin: 0 auto;
}

.news-feature {
  display: flex;
  gap: 24px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px;
  backdrop-filter: blur(12px);
  text-decoration: none;
  color: var(--text);
  transition: all 0.3s ease;
  margin-bottom: 14px;
}

.news-feature:hover {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  color: var(--text);
}

.news-feature-img {
  width: 320px;
  height: 190px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid var(--glass-border);
}

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

.news-feature:hover .news-feature-img img {
  transform: scale(1.03);
}

.news-feature-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 0;
  min-width: 0;
}

.news-feature-info h3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-feature-info p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

.news-date {
  font-size: 13px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-date i {
  font-size: 12px;
  color: var(--accent);
}

.news-item {
  display: flex;
  gap: 18px;
  padding: 14px 20px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  backdrop-filter: blur(10px);
  text-decoration: none;
  color: var(--text);
  transition: all 0.3s ease;
  margin-bottom: 10px;
}

.news-item:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  transform: translateX(4px);
  color: var(--text);
}

.news-item-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 56px;
  padding-right: 16px;
  border-right: 1px solid var(--glass-border);
  flex-shrink: 0;
}

.news-item-date .d {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  font-feature-settings: 'tnum';
  line-height: 1.2;
}

.news-item-date .ym {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-top: 2px;
}

.news-item-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
  justify-content: center;
}

.news-item-info h4 {
  font-size: 15px;
  font-weight: 600;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-item-info p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

.news-empty {
  text-align: center;
  padding: 48px 24px;
  background: var(--glass);
  border: 1px dashed var(--glass-border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 15px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #081021;
  border-top: 1px solid var(--glass-border);
  margin-left: 88px;
  position: relative;
  z-index: 1;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 48px;
  padding: 56px 24px 40px;
  max-width: 1240px;
  margin: 0 auto;
}

.footer-brand .footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 14px;
}

.footer-links a {
  display: block;
  color: var(--text-secondary);
  font-size: 14px;
  padding: 4px 0;
  transition: color 0.3s ease, padding-left 0.3s ease;
}

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

.footer-contact p {
  color: var(--text-secondary);
  font-size: 14px;
  padding: 4px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-contact p i {
  color: var(--accent);
  font-size: 13px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 20px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 12px;
  color: rgba(154, 168, 199, 0.7);
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) and (min-width: 768px) {
  .side-nav {
    width: 64px;
  }

  .main-wrap {
    margin-left: 64px;
  }

  .site-footer {
    margin-left: 64px;
  }

  .brand-text,
  .nav-item span:not(.sr-only) {
    display: none;
  }

  .nav-menu {
    padding: 0 8px;
  }

  .nav-item {
    height: 48px;
  }

  .nav-item.active::before {
    left: -8px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-visual {
    display: none;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .news-feature-img {
    width: 240px;
    height: 160px;
  }
}

@media (max-width: 767px) {
  .side-nav {
    display: none;
  }

  .mobile-header {
    display: flex;
  }

  .main-wrap {
    margin-left: 0;
    padding-top: 60px;
  }

  .site-footer {
    margin-left: 0;
  }

  .container {
    padding: 0 16px;
  }

  .hero {
    padding: 64px 0 80px;
  }

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

  .hero-content {
    text-align: center;
    max-width: 100%;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-badges {
    justify-content: center;
  }

  .hero-visual {
    display: none;
  }

  .hero-scroll {
    display: none;
  }

  .section-header h2 {
    font-size: 22px;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .metric-num {
    font-size: 26px;
  }

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

  .case-card-img {
    height: 180px;
  }

  .step-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 20px;
  }

  .step-number {
    font-size: 30px;
    min-width: auto;
  }

  .step-connector {
    margin-left: 24px;
  }

  .apply-card {
    padding: 28px 20px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .btn-lg {
    width: 100%;
    justify-content: center;
  }

  .news-feature {
    flex-direction: column;
    padding: 16px;
  }

  .news-feature-img {
    width: 100%;
    height: 180px;
  }

  .news-feature-info h3 {
    font-size: 17px;
  }

  .news-item {
    padding: 12px 14px;
  }

  .news-item-date {
    min-width: 44px;
    padding-right: 10px;
  }

  .news-item-date .d {
    font-size: 22px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 16px 24px;
  }

  .badge {
    font-size: 12px;
    padding: 5px 10px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 24px;
  }

  .hero-subtitle {
    font-size: 14px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

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

  .metric-num {
    font-size: 22px;
  }

  .metric-label {
    font-size: 12px;
  }

  .step-content h3 {
    font-size: 16px;
  }

  .faq-question {
    font-size: 14px;
    padding: 16px;
  }

  .faq-answer p {
    font-size: 13px;
  }

  .apply-card {
    padding: 24px 16px;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    font-size: 13px;
  }

  .btn {
    font-size: 14px;
    padding: 11px 20px;
  }

  .news-feature-info h3 {
    white-space: normal;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }
}

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

/* roulang page: category1 */
:root {
    --bg: #0A1428;
    --bg-elev: #101D35;
    --glass: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.12);
    --primary: #2B7FFF;
    --primary-hover: #4A96FF;
    --accent: #17E6C8;
    --text: #E8EEFF;
    --text-secondary: #9AA8C7;
    --success: #34D399;
    --warning: #FBBF24;
    --danger: #F87171;
    --radius: 16px;
    --transition: 0.3s ease;
    --shadow-primary: 0 0 24px rgba(43, 127, 255, 0.45);
    --font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Source Han Sans SC', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.75;
    font-size: 16px;
    letter-spacing: 0.01em;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    position: relative;
    min-height: 100vh;
}

body::before {
    content: '';
    position: fixed;
    top: -120px;
    right: -120px;
    width: 480px;
    height: 480px;
    background: radial-gradient(circle, rgba(43, 127, 255, 0.08), transparent 70%);
    pointer-events: none;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    bottom: -80px;
    left: -80px;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(23, 230, 200, 0.06), transparent 70%);
    pointer-events: none;
    z-index: 0;
}

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

a:hover {
    color: var(--primary-hover);
}

a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

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

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

ul, ol {
    list-style-position: inside;
}

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-elev);
}

::-webkit-scrollbar-thumb {
    background: rgba(43, 127, 255, 0.4);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(43, 127, 255, 0.7);
}

.side-nav {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 88px;
    background: #0D1930;
    border-right: 2px solid var(--accent);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 24px 0;
    z-index: 1000;
    overflow-y: auto;
}

.nav-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-bottom: 40px;
    color: var(--text);
}

.nav-brand:hover {
    color: var(--accent);
}

.brand-icon {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0;
}

.brand-text {
    font-size: 13px;
    font-weight: 700;
    writing-mode: vertical-rl;
    letter-spacing: 0.3em;
    color: var(--text);
}

.nav-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    padding: 0;
    flex: 1;
}

.nav-menu li {
    display: block;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 14px 8px;
    color: var(--text-secondary);
    font-size: 12px;
    position: relative;
    transition: all var(--transition);
    border-left: 3px solid transparent;
    min-height: 60px;
}

.nav-item i {
    font-size: 20px;
}

.nav-item:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.nav-item.active {
    color: var(--primary);
    border-left: 3px solid var(--primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-item.active i {
    color: var(--primary);
}

.nav-footer {
    padding-top: 20px;
}

.nav-cta {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), #1A6AE5);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    box-shadow: var(--shadow-primary);
    transition: all var(--transition);
}

.nav-cta:hover {
    box-shadow: 0 0 36px rgba(43, 127, 255, 0.7);
    transform: translateY(-2px);
    color: #fff;
}

.main-wrapper {
    margin-left: 88px;
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.page-header {
    padding: 64px 0 32px;
    background: linear-gradient(135deg, rgba(43, 127, 255, 0.12), transparent 60%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -60px;
    right: 10%;
    width: 240px;
    height: 240px;
    background: radial-gradient(circle, rgba(23, 230, 200, 0.1), transparent 70%);
    border-radius: 50%;
}

.page-header-inner {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

.page-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(23, 230, 200, 0.1);
    border: 1px solid rgba(23, 230, 200, 0.25);
    color: var(--accent);
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}

.page-h1 {
    font-size: clamp(32px, 4.5vw, 46px);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: 0.02em;
    margin-bottom: 16px;
    max-width: 720px;
}

.page-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 680px;
    margin-bottom: 32px;
    line-height: 1.75;
}

.page-header-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    min-height: 44px;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, #2B7FFF, #1A6AE5);
    color: #fff;
    box-shadow: 0 0 24px rgba(43, 127, 255, 0.45);
}

.btn-primary:hover {
    filter: brightness(1.15);
    box-shadow: 0 0 36px rgba(43, 127, 255, 0.7);
    transform: translateY(-1px);
    color: #fff;
}

.btn-secondary {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    color: var(--text);
    backdrop-filter: blur(14px);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.breadcrumb a {
    color: var(--text-secondary);
}

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

.breadcrumb .sep {
    color: rgba(255, 255, 255, 0.3);
    margin: 0 2px;
}

.breadcrumb .current {
    color: var(--text);
    font-weight: 500;
}

.section {
    padding: clamp(64px, 8vw, 96px) 0;
}

.section-header {
    margin-bottom: 48px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 500;
    color: var(--accent);
    background: rgba(23, 230, 200, 0.08);
    padding: 4px 14px;
    border-radius: 999px;
    margin-bottom: 12px;
    border: 1px solid rgba(23, 230, 200, 0.2);
    letter-spacing: 0.05em;
}

.section-h2 {
    font-size: clamp(26px, 3vw, 30px);
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 16px;
    max-width: 720px;
    line-height: 1.75;
}

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

.split-copy .split-title {
    font-size: clamp(22px, 2.4vw, 28px);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 20px;
}

.split-copy p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.75;
}

.split-copy .highlight-list {
    list-style: none;
    padding: 0;
    margin: 24px 0 0;
}

.split-copy .highlight-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
    color: var(--text);
    font-size: 15px;
    line-height: 1.6;
}

.split-copy .highlight-list li i {
    color: var(--accent);
    font-size: 16px;
    margin-top: 4px;
    flex-shrink: 0;
}

.split-visual {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    background: var(--bg-elev);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.split-visual img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    display: block;
}

.split-visual .visual-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 32px 24px;
    background: linear-gradient(transparent, rgba(10, 20, 40, 0.9));
    color: var(--text);
    font-size: 14px;
    line-height: 1.7;
}

.points-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.point-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 28px 24px;
    backdrop-filter: blur(14px);
    transition: all var(--transition);
}

.point-card:hover {
    border-color: rgba(255, 255, 255, 0.22);
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-4px);
}

.point-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(43, 127, 255, 0.2), rgba(23, 230, 200, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--primary);
    margin-bottom: 16px;
}

.point-icon .fa-solid, .point-icon .fa-regular {
    color: var(--accent);
    font-size: 20px;
}

.point-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.4;
}

.point-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.65;
}

.cta-banner {
    background: linear-gradient(135deg, rgba(43, 127, 255, 0.15), rgba(23, 230, 200, 0.08));
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 56px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -40px;
    width: 240px;
    height: 240px;
    background: radial-gradient(circle, rgba(23, 230, 200, 0.15), transparent 70%);
}

.cta-banner h2 {
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 700;
    margin-bottom: 12px;
}

.cta-banner p {
    color: var(--text-secondary);
    margin-bottom: 28px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.site-footer {
    background: #081021;
    border-top: 1px solid var(--glass-border);
    padding: 64px 0 0;
    margin-top: auto;
    position: relative;
    z-index: 2;
}

.footer-inner {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
}

.footer-logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
    letter-spacing: 0.02em;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
}

.footer-links h4, .footer-contact h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 16px;
}

.footer-links a {
    display: block;
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 10px;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-contact p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 9px;
}

.footer-contact i {
    color: var(--primary);
    width: 18px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 20px 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 12px;
    color: var(--text-secondary);
}

@media (min-width: 1024px) and (max-width: 1239px) {
    .split-layout {
        gap: 40px;
    }

    .points-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .side-nav {
        width: 64px;
    }

    .brand-text {
        display: none;
    }

    .nav-item span {
        display: none;
    }

    .nav-item {
        min-height: 52px;
        padding: 10px 4px;
    }

    .nav-item i {
        font-size: 18px;
    }

    .main-wrapper {
        margin-left: 64px;
    }

    .split-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .split-visual img {
        height: 320px;
    }

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

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

@media (max-width: 767px) {
    .side-nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: auto;
        width: 100%;
        height: 60px;
        flex-direction: row;
        justify-content: space-between;
        padding: 0 16px;
        background: rgba(13, 25, 48, 0.96);
        backdrop-filter: blur(14px);
        border-right: none;
        border-bottom: 2px solid var(--accent);
        z-index: 1000;
    }

    .nav-brand {
        flex-direction: row;
        margin-bottom: 0;
        gap: 8px;
    }

    .brand-icon {
        width: 36px;
        height: 36px;
        font-size: 12px;
    }

    .brand-text {
        writing-mode: horizontal-tb;
        font-size: 16px;
        letter-spacing: 0.05em;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(13, 25, 48, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 16px;
        gap: 4px;
        transform: translateY(-120%);
        transition: transform 0.35s ease;
        border-bottom: 1px solid var(--glass-border);
        display: flex;
    }

    .nav-menu.open {
        transform: translateY(0);
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-item {
        flex-direction: row;
        justify-content: flex-start;
        gap: 14px;
        min-height: 48px;
        padding: 12px 16px;
        border-left: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        font-size: 15px;
    }

    .nav-item.active {
        border-left: none;
        border-left: 3px solid var(--primary);
    }

    .nav-item span {
        display: inline;
    }

    .nav-footer {
        display: none;
    }

    .main-wrapper {
        margin-left: 0;
        padding-top: 60px;
    }

    .page-header {
        padding: 48px 0 28px;
    }

    .page-header-inner {
        padding: 0 16px;
    }

    .page-h1 {
        font-size: 28px;
    }

    .page-actions {
        flex-direction: column;
        gap: 12px;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

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

    .split-visual img {
        height: 220px;
    }

    .points-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .cta-banner {
        padding: 40px 24px;
    }

    .cta-actions {
        flex-direction: column;
    }

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

    .footer-bottom {
        padding: 16px;
    }
}

@media (max-width: 480px) {
    .page-header-inner {
        padding: 0 16px;
    }

    .section-tag {
        font-size: 12px;
    }

    .page-h1 {
        font-size: 24px;
        line-height: 1.35;
    }

    .split-copy .highlight-list li {
        font-size: 14px;
    }

    .point-card {
        padding: 22px 18px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition: none !important;
        animation: none !important;
    }
}

/* roulang page: article */
:root {
  --bg: #0A1428;
  --bg-elev: #101D35;
  --glass: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.12);
  --primary: #2B7FFF;
  --primary-hover: #4A96FF;
  --accent: #17E6C8;
  --text: #E8EEFF;
  --text-secondary: #9AA8C7;
  --success: #34D399;
  --warning: #FBBF24;
  --danger: #F87171;
  --radius: 16px;
  --radius-sm: 10px;
  --nav-w: 88px;
  --shadow: 0 8px 30px rgba(0,0,0,0.28);
  --font: 'PingFang SC','Microsoft YaHei','Noto Sans SC','Source Han Sans SC',sans-serif;
}

* { 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: 1.75;
  letter-spacing: 0.01em;
  min-height: 100vh;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 34px 34px;
}

body::before {
  content: '';
  position: fixed;
  top: -15%;
  left: -8%;
  width: 55vw;
  height: 55vh;
  background: radial-gradient(circle, rgba(43,127,255,0.08), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  bottom: -10%;
  right: -5%;
  width: 45vw;
  height: 45vh;
  background: radial-gradient(circle, rgba(23,230,200,0.05), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

a { color: var(--primary); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--primary-hover); }

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

button, input, select, textarea { font-family: inherit; font-size: 15px; }

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

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 左侧竖向导航 */
.side-nav {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--nav-w);
  background: #0D1930;
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 100;
}

.side-nav::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  opacity: 0.85;
}

.nav-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 22px 0 18px;
  text-decoration: none;
}

.brand-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), #1A6AE5);
  border-radius: 12px;
  color: #fff;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.06em;
  box-shadow: 0 0 22px rgba(43,127,255,0.45);
  transition: transform .3s ease, box-shadow .3s ease;
}

.brand-icon:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 32px rgba(43,127,255,0.7);
}

.brand-text {
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.nav-menu {
  list-style: none;
  width: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 0;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 0;
  min-height: 52px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 12px;
  position: relative;
  transition: color .25s ease, background .25s ease;
}

.nav-item i { font-size: 18px; transition: transform .25s ease; }

.nav-item:hover {
  color: var(--text);
  background: rgba(255,255,255,0.04);
}

.nav-item:hover i { transform: scale(1.08); }

.nav-item.active {
  color: var(--primary);
  background: rgba(255,255,255,0.05);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  background: var(--primary);
  border-radius: 0 4px 4px 0;
}

.nav-footer {
  padding: 16px 0;
}

.nav-cta {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), #1A6AE5);
  color: #fff;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(43,127,255,0.4);
  transition: transform .25s ease, box-shadow .25s ease;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 34px rgba(43,127,255,0.75);
  color: #fff;
}

.nav-cta:active {
  transform: scale(0.97);
}

/* 移动端顶部导航 */
.mobile-header {
  display: none;
}

.mobile-drawer {
  display: none;
}

/* 主内容区 */
.main-content {
  margin-left: var(--nav-w);
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  padding: 28px 0 0;
}

.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
}

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

.breadcrumb .sep {
  opacity: 0.55;
}

.breadcrumb .current {
  color: var(--text);
  max-width: 320px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* 文章头部 */
.article-header {
  padding: 28px 0 12px;
}

.article-title {
  font-size: clamp(28px, 3.6vw, 38px);
  line-height: 1.32;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.01em;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--text-secondary);
}

.article-meta .meta-divider {
  width: 1px;
  height: 14px;
  background: var(--glass-border);
}

.article-meta .cat-pill {
  background: rgba(43,127,255,0.12);
  color: var(--primary);
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
}

.article-meta .read-stat {
  color: var(--text-secondary);
}

/* 正文阅读区 */
.article-body {
  max-width: 780px;
  margin: 8px auto 0;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 42px 44px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.article-body p {
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(232,238,255,0.92);
}

.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  margin: 36px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--glass-border);
}

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin: 28px 0 12px;
}

.article-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 14px 22px;
  background: rgba(23,230,200,0.06);
  border-radius: 0 12px 12px 0;
  margin: 20px 0;
  color: var(--text-secondary);
  font-style: normal;
}

.article-body img {
  max-width: 100%;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  margin: 20px 0;
}

.article-body ul,
.article-body ol {
  padding-left: 22px;
  margin-bottom: 18px;
}

.article-body li {
  margin-bottom: 8px;
  color: rgba(232,238,255,0.92);
}

.article-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body a:hover {
  color: #4AF5D8;
}

/* 文章空态 */
.article-empty {
  max-width: 780px;
  margin: 24px auto 0;
  text-align: center;
  padding: 70px 24px;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
}

.article-empty i {
  font-size: 36px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  display: block;
}

.article-empty p {
  font-size: 18px;
  color: var(--text);
  margin-bottom: 24px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
  min-height: 44px;
}

.btn-primary {
  background: linear-gradient(135deg, #2B7FFF, #1A6AE5);
  color: #fff;
  box-shadow: 0 0 24px rgba(43,127,255,0.45);
}

.btn-primary:hover {
  color: #fff;
  box-shadow: 0 0 38px rgba(43,127,255,0.7);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  background: var(--glass);
  border-color: var(--glass-border);
  color: var(--text);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-secondary:active {
  transform: scale(0.98);
}

/* 相关推荐 */
.related-section {
  padding: 52px 0 8px;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.section-head h2 {
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  position: relative;
}

.section-head h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 42px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

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

.related-card {
  display: flex;
  flex-direction: column;
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .3s ease, border-color .3s ease, background .3s ease;
  position: relative;
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,255,255,0.22);
  background: rgba(255,255,255,0.08);
}

.related-card-img {
  width: 100%;
  height: 168px;
  object-fit: cover;
  transition: transform .4s ease;
}

.related-card:hover .related-card-img {
  transform: scale(1.03);
}

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

.related-card-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card-body p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.related-card-link {
  font-size: 13px;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .25s ease;
}

.related-card-link:hover {
  gap: 10px;
  color: var(--primary-hover);
}

/* 返回入口 */
.back-entry {
  text-align: center;
  padding: 32px 0 8px;
}

/* CTA 板块 */
.apply-section {
  position: relative;
  background:
    linear-gradient(rgba(10,20,40,0.87), rgba(10,20,40,0.93)),
    url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  padding: 56px 48px;
  margin: 48px 0 40px;
  text-align: center;
  overflow: hidden;
}

.apply-section::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(43,127,255,0.22), transparent 70%);
  pointer-events: none;
}

.apply-section h2 {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.apply-section p {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 28px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.apply-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* 页脚 */
.site-footer {
  background: #081021;
  border-top: 1px solid var(--glass-border);
  padding: 48px 24px 24px;
  margin-top: auto;
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 36px;
}

.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.footer-brand p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 300px;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 14px;
}

.footer-links a {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 0;
  transition: color .25s ease, padding-left .25s ease;
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-contact p {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 5px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.footer-bottom {
  max-width: 1240px;
  margin: 0 auto;
  padding-top: 20px;
  border-top: 1px solid var(--glass-border);
  text-align: center;
  font-size: 12px;
  color: var(--text-secondary);
}

/* 响应式 */
@media (max-width: 1160px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1023px) {
  :root {
    --nav-w: 64px;
  }

  .brand-text {
    display: none;
  }

  .nav-item span {
    display: none;
  }

  .nav-item {
    padding: 16px 0;
  }

  .nav-item i {
    font-size: 20px;
  }

  .brand-icon {
    width: 38px;
    height: 38px;
    font-size: 11px;
  }

  .article-body {
    padding: 36px 32px;
  }

  .apply-section {
    padding: 44px 32px;
  }

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

@media (max-width: 767px) {
  .side-nav {
    display: none;
  }

  .main-content {
    margin-left: 0;
    padding-top: 60px;
  }

  .mobile-header {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    background: rgba(13,25,48,0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 200;
  }

  .mobile-brand {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .mobile-brand .brand-dot {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--primary), #1A6AE5);
    box-shadow: 0 0 16px rgba(43,127,255,0.5);
  }

  .menu-toggle {
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    border-radius: 10px;
    color: var(--text);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .25s ease;
  }

  .menu-toggle:hover {
    background: rgba(255,255,255,0.06);
  }

  .mobile-drawer {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: #0D1930;
    border-bottom: 1px solid var(--glass-border);
    padding: 16px;
    z-index: 199;
    display: none;
  }

  .mobile-drawer.open {
    display: block;
    animation: drawerIn .25s ease;
  }

  @keyframes drawerIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .mobile-drawer a {
    display: flex;
    align-items: center;
    gap: 14px;
    min-height: 48px;
    padding: 0 16px;
    border-radius: 12px;
    color: var(--text);
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: background .25s ease, color .25s ease;
  }

  .mobile-drawer a:hover {
    background: rgba(255,255,255,0.05);
  }

  .mobile-drawer a.active {
    background: rgba(43,127,255,0.12);
    color: var(--primary);
  }

  .mobile-drawer .drawer-cta {
    margin-top: 12px;
    background: linear-gradient(135deg, var(--primary), #1A6AE5);
    color: #fff;
    justify-content: center;
    font-weight: 600;
    box-shadow: 0 0 20px rgba(43,127,255,0.35);
  }

  .mobile-drawer .drawer-cta:hover {
    color: #fff;
  }

  .breadcrumb {
    padding-top: 20px;
  }

  .article-header {
    padding-top: 20px;
  }

  .article-body {
    padding: 28px 22px;
  }

  .article-body p {
    font-size: 15px;
  }

  .related-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .apply-section {
    padding: 38px 24px;
  }

  .apply-section h2 {
    font-size: 24px;
  }

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

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }

  .breadcrumb {
    font-size: 12px;
  }

  .article-title {
    font-size: 26px;
  }

  .article-meta {
    gap: 10px;
    font-size: 12px;
  }

  .article-body {
    padding: 24px 18px;
    border-radius: 12px;
  }

  .article-body h2 {
    font-size: 21px;
  }

  .article-body h3 {
    font-size: 18px;
  }

  .related-card-img {
    height: 150px;
  }

  .apply-actions .btn {
    width: 100%;
  }

  .apply-section {
    padding: 32px 20px;
    border-radius: 12px;
  }

  .section-head h2 {
    font-size: 22px;
  }
}

/* roulang page: category2 */
:root {
  --bg: #0A1428;
  --bg-elev: #101D35;
  --glass: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.12);
  --primary: #2B7FFF;
  --primary-hover: #4A96FF;
  --accent: #17E6C8;
  --text: #E8EEFF;
  --text-secondary: #9AA8C7;
  --success: #34D399;
  --warning: #FBBF24;
  --danger: #F87171;
  --radius: 16px;
  --shadow-lg: 0 20px 48px rgba(0,0,0,0.35);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.25);
  --nav-width: 88px;
  --font-stack: 'PingFang SC','Microsoft YaHei','Noto Sans SC','Source Han Sans SC',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-stack);
  background:var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,0.03) 1px,transparent 1px);
  background-size:44px 44px;
  color:var(--text);
  font-size:15px;
  line-height:1.75;
  letter-spacing:0.01em;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-hover)}
a:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:15px}

/* ===== 左侧导航 ===== */
.side-nav{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--nav-width);
  background:linear-gradient(180deg,#0D1930 0%,#0B1526 100%);
  border-right:1px solid var(--glass-border);
  display:flex;
  flex-direction:column;
  align-items:center;
  padding:20px 0 18px;
  z-index:1000;
}
.side-nav::before{
  content:'';
  position:absolute;
  left:0;top:0;bottom:0;
  width:2px;
  background:linear-gradient(180deg,var(--accent),rgba(23,230,200,0.1));
}
.nav-brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
  padding:8px 0 20px;
  color:var(--text);
}
.nav-brand:hover{color:var(--text)}
.brand-icon{
  width:44px;height:44px;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(43,127,255,0.25),rgba(23,230,200,0.15));
  border:1px solid rgba(43,127,255,0.35);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;
  color:var(--accent);
  letter-spacing:0.04em;
}
.brand-text{
  font-size:13px;
  font-weight:600;
  color:var(--text);
  letter-spacing:0.03em;
  writing-mode:vertical-rl;
  text-orientation:mixed;
}
.nav-menu{
  list-style:none;
  margin-top:12px;
  flex:1;
  display:flex;
  flex-direction:column;
  gap:6px;
  width:100%;
  padding:0 8px;
}
.nav-menu li{width:100%}
.nav-item{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:5px;
  padding:12px 4px 10px;
  border-radius:10px;
  color:var(--text-secondary);
  font-size:12px;
  font-weight:500;
  transition:background .25s ease,color .25s ease;
  position:relative;
}
.nav-item i{font-size:18px;transition:color .25s ease}
.nav-item:hover{
  color:var(--text);
  background:rgba(255,255,255,0.05);
}
.nav-item.active{
  color:var(--primary);
  background:rgba(43,127,255,0.1);
}
.nav-item.active::before{
  content:'';
  position:absolute;
  left:-8px;top:50%;
  transform:translateY(-50%);
  width:3px;height:22px;
  background:var(--primary);
  border-radius:0 3px 3px 0;
}
.nav-item.active i{color:var(--primary)}
.nav-item:active{transform:scale(0.97)}
.nav-item:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.nav-footer{
  padding:8px 0 4px;
}
.nav-cta{
  display:flex;align-items:center;justify-content:center;
  width:48px;height:48px;
  border-radius:14px;
  background:linear-gradient(135deg,var(--primary),#1A6AE5);
  border:1px solid rgba(255,255,255,0.15);
  color:#fff;
  font-size:20px;
  box-shadow:0 0 20px rgba(43,127,255,0.35);
  transition:box-shadow .3s ease,transform .2s ease;
}
.nav-cta:hover{
  box-shadow:0 0 32px rgba(43,127,255,0.55);
  color:#fff;
  transform:translateY(-2px);
}
.nav-cta:active{transform:scale(0.96)}
.nav-cta:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ===== 移动端顶部导航 ===== */
.mobile-header{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:64px;
  background:rgba(13,25,48,0.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--glass-border);
  z-index:1001;
  align-items:center;
  justify-content:space-between;
  padding:0 20px;
}
.mobile-logo{
  display:flex;align-items:center;gap:10px;
  color:var(--text);
}
.mobile-logo .brand-icon{width:36px;height:36px;font-size:10px;border-radius:10px}
.mobile-logo .brand-text{
  writing-mode:horizontal-tb;
  font-size:16px;
  font-weight:700;
  letter-spacing:0.02em;
}
.mobile-menu-btn{
  width:44px;height:44px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:10px;
  color:var(--text);
  font-size:18px;
  display:flex;align-items:center;justify-content:center;
  transition:background .2s ease;
}
.mobile-menu-btn:hover{background:rgba(255,255,255,0.1)}
.mobile-menu-btn:active{transform:scale(0.96)}
.mobile-menu-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.mobile-drawer{
  position:fixed;
  top:64px;left:0;right:0;
  background:#0D1930;
  border-bottom:1px solid var(--glass-border);
  padding:16px 20px;
  z-index:1000;
  display:none;
  box-shadow:var(--shadow-lg);
}
.mobile-drawer.open{display:block;animation:drawerIn .25s ease}
@keyframes drawerIn{
  from{opacity:0;transform:translateY(-10px)}
  to{opacity:1;transform:translateY(0)}
}
.mobile-drawer a{
  display:flex;align-items:center;gap:14px;
  padding:14px 12px;
  min-height:48px;
  border-radius:10px;
  color:var(--text-secondary);
  font-size:15px;
  font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.mobile-drawer a i{width:22px;font-size:18px}
.mobile-drawer a:hover{background:rgba(255,255,255,0.06);color:var(--text)}
.mobile-drawer a.active{background:rgba(43,127,255,0.12);color:var(--primary)}

/* ===== 主容器 ===== */
.main-wrap{
  margin-left:var(--nav-width);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.content{
  flex:1;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
  width:100%;
}

/* ===== 页面Hero ===== */
.page-hero{
  position:relative;
  padding:clamp(64px,9vw,110px) 24px clamp(48px,7vw,80px);
  background-image:linear-gradient(rgba(10,20,40,0.84),rgba(10,20,40,0.9)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--glass-border);
  overflow:hidden;
}
.page-hero::after{
  content:'';
  position:absolute;
  top:-80px;right:-80px;
  width:360px;height:360px;
  background:radial-gradient(circle,rgba(43,127,255,0.18),transparent 70%);
  pointer-events:none;
}
.page-hero .container{
  max-width:1240px;
  margin:0 auto;
  position:relative;
  z-index:1;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-secondary);
  margin-bottom:24px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-secondary);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:0.5}
.breadcrumb .current{color:var(--text)}
.page-hero h1{
  font-size:clamp(32px,4.5vw,46px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:0.02em;
  margin-bottom:16px;
  color:var(--text);
}
.page-hero .hero-sub{
  font-size:clamp(16px,2vw,19px);
  color:var(--text-secondary);
  max-width:640px;
  line-height:1.7;
}
.hero-actions{
  display:flex;
  gap:16px;
  margin-top:32px;
  flex-wrap:wrap;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 28px;
  border-radius:10px;
  font-size:15px;
  font-weight:600;
  border:none;
  transition:box-shadow .3s ease,transform .2s ease,background .2s ease,border-color .2s ease;
  min-height:44px;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#1A6AE5);
  color:#fff;
  box-shadow:0 0 24px rgba(43,127,255,0.45);
}
.btn-primary:hover{
  box-shadow:0 0 36px rgba(43,127,255,0.7);
  transform:translateY(-1px);
  color:#fff;
}
.btn-primary:active{transform:scale(0.98)}
.btn-primary:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-ghost{
  background:var(--glass);
  border:1px solid var(--glass-border);
  color:var(--text);
}
.btn-ghost:hover{
  border-color:var(--primary);
  color:var(--primary-hover);
  background:rgba(43,127,255,0.08);
}
.btn-ghost:active{transform:scale(0.98)}
.btn-ghost:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ===== 区块通用 ===== */
.section{
  padding:clamp(64px,8vw,96px) 0;
}
.section-header{
  margin-bottom:48px;
}
.section-header .tag{
  display:inline-block;
  padding:5px 14px;
  border-radius:999px;
  background:rgba(43,127,255,0.1);
  border:1px solid rgba(43,127,255,0.2);
  color:var(--primary-hover);
  font-size:13px;
  font-weight:600;
  letter-spacing:0.02em;
  margin-bottom:14px;
}
.section-header h2{
  font-size:clamp(26px,3vw,32px);
  font-weight:700;
  line-height:1.35;
  color:var(--text);
  margin-bottom:12px;
}
.section-header .section-desc{
  color:var(--text-secondary);
  font-size:15px;
  max-width:640px;
  line-height:1.75;
}

/* ===== 全宽图文横栏 ===== */
.full-banner{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  background-image:linear-gradient(rgba(10,20,40,0.78),rgba(10,20,40,0.85)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  padding:clamp(36px,6vw,64px);
  margin:0 auto;
  max-width:1240px;
  border:1px solid var(--glass-border);
  min-height:300px;
  display:flex;
  align-items:center;
}
.full-banner .banner-content{
  max-width:560px;
  position:relative;
  z-index:1;
}
.full-banner .banner-content h3{
  font-size:clamp(22px,2.6vw,28px);
  font-weight:700;
  line-height:1.4;
  margin-bottom:14px;
  color:#fff;
}
.full-banner .banner-content p{
  color:rgba(232,238,255,0.82);
  line-height:1.8;
  font-size:15px;
}

/* ===== 时间线流程 ===== */
.timeline-section{
  position:relative;
  background:linear-gradient(180deg,var(--bg) 0%,var(--bg-elev) 100%);
}
.timeline{
  max-width:920px;
  margin:0 auto;
  position:relative;
  padding:20px 0;
}
.timeline::before{
  content:'';
  position:absolute;
  left:50%;
  top:20px;
  bottom:20px;
  width:2px;
  background:linear-gradient(180deg,var(--primary),rgba(23,230,200,0.15));
  transform:translateX(-50%);
}
.timeline-item{
  position:relative;
  padding:24px 0;
  display:flex;
  align-items:flex-start;
  width:50%;
}
.timeline-item:nth-child(odd){
  padding-right:60px;
  justify-content:flex-end;
  text-align:right;
  left:0;
}
.timeline-item:nth-child(even){
  padding-left:60px;
  left:50%;
}
.timeline-dot{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  width:42px;
  height:42px;
  border-radius:50%;
  background:var(--bg-elev);
  border:2px solid var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  font-weight:700;
  color:var(--accent);
  z-index:2;
  box-shadow:0 0 16px rgba(43,127,255,0.2);
}
.timeline-item:nth-child(odd) .timeline-dot{
  right:-21px;
}
.timeline-item:nth-child(even) .timeline-dot{
  left:-21px;
}
.timeline-card{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius);
  padding:24px 28px;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:border-color .3s ease,background .3s ease,transform .3s ease;
  display:inline-block;
  text-align:left;
  min-width:280px;
  max-width:360px;
}
.timeline-card:hover{
  border-color:rgba(255,255,255,0.22);
  background:rgba(255,255,255,0.08);
  transform:translateY(-3px);
}
.timeline-card .tl-step{
  font-size:13px;
  font-weight:600;
  color:var(--accent);
  letter-spacing:0.04em;
  margin-bottom:8px;
  display:flex;
  align-items:center;
  gap:8px;
}
.timeline-card h4{
  font-size:19px;
  font-weight:600;
  color:var(--text);
  margin-bottom:8px;
}
.timeline-card p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.7;
}

/* ===== 场景卡片 ===== */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.scene-card{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:border-color .3s ease,transform .3s ease,box-shadow .3s ease;
}
.scene-card:hover{
  border-color:rgba(255,255,255,0.22);
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}
.scene-card .scene-img{
  height:200px;
  overflow:hidden;
  position:relative;
}
.scene-card .scene-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.scene-card:hover .scene-img img{transform:scale(1.03)}
.scene-card .scene-img::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(10,20,40,0.6));
}
.scene-card .scene-body{
  padding:24px;
}
.scene-card .scene-body h3{
  font-size:19px;
  font-weight:600;
  color:var(--text);
  margin-bottom:8px;
}
.scene-card .scene-body p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.7;
  margin-bottom:16px;
}
.scene-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--primary);
  transition:color .2s ease,gap .2s ease;
}
.scene-link:hover{color:var(--primary-hover);gap:10px}
.scene-link:active{color:var(--accent)}

/* ===== FAQ面板 ===== */
.faq-section{
  background:linear-gradient(180deg,var(--bg-elev) 0%,var(--bg) 100%);
}
.faq-list{
  max-width:860px;
  margin:0 auto;
}
.faq-item{
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:14px;
  margin-bottom:14px;
  transition:border-color .3s ease,background .3s ease;
  overflow:hidden;
}
.faq-item[open]{
  background:rgba(43,127,255,0.08);
  border-color:rgba(43,127,255,0.35);
}
.faq-item summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  cursor:pointer;
  min-height:60px;
  user-select:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary h3{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  line-height:1.5;
  transition:color .2s;
}
.faq-item summary:hover h3{color:var(--primary-hover)}
.faq-item .faq-icon{
  width:30px;height:30px;
  border-radius:50%;
  border:1px solid var(--glass-border);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;
  color:var(--text-secondary);
  flex-shrink:0;
  transition:transform .3s ease,background .3s ease,color .3s ease,border-color .3s ease;
  background:var(--glass);
}
.faq-item[open] .faq-icon{
  transform:rotate(45deg);
  border-color:var(--primary);
  color:var(--primary);
}
.faq-item .faq-answer{
  padding:0 24px 22px;
  color:var(--text-secondary);
  font-size:15px;
  line-height:1.8;
  border-top:1px solid rgba(255,255,255,0.06);
  padding-top:16px;
  margin:0 24px;
  animation:faqIn .3s ease;
  padding-left:0;
  padding-right:0;
}
@keyframes faqIn{
  from{opacity:0;transform:translateY(-6px)}
  to{opacity:1;transform:translateY(0)}
}
.faq-item:active{transform:scale(0.995)}

/* ===== CTA区块 ===== */
.cta-section{
  padding:clamp(64px,8vw,96px) 0;
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:'';
  position:absolute;
  top:-100px;left:50%;
  transform:translateX(-50%);
  width:600px;height:400px;
  background:radial-gradient(ellipse,rgba(23,230,200,0.08),transparent 70%);
  pointer-events:none;
}
.cta-card{
  max-width:860px;
  margin:0 auto;
  background:linear-gradient(135deg,rgba(255,255,255,0.09),rgba(255,255,255,0.04));
  border:1px solid var(--glass-border);
  border-radius:24px;
  padding:clamp(32px,5vw,56px);
  position:relative;
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  text-align:center;
  box-shadow:var(--shadow-lg);
  overflow:hidden;
}
.cta-card::before{
  content:'';
  position:absolute;
  top:-40px;right:-40px;
  width:160px;height:160px;
  background:radial-gradient(circle,rgba(23,230,200,0.15),transparent 70%);
  pointer-events:none;
}
.cta-card h2{
  font-size:clamp(26px,3vw,32px);
  font-weight:700;
  margin-bottom:12px;
  color:var(--text);
}
.cta-card .cta-desc{
  color:var(--text-secondary);
  font-size:15px;
  margin-bottom:32px;
  max-width:520px;
  margin-left:auto;
  margin-right:auto;
  line-height:1.8;
}
.cta-form{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
  text-align:left;
}
.form-group{
  display:flex;
  flex-direction:column;
  gap:6px;
}
.form-group.full{grid-column:1/-1}
.form-group label{
  font-size:14px;
  color:var(--text-secondary);
  font-weight:500;
}
.form-group input,.form-group select,.form-group textarea{
  background:rgba(255,255,255,0.05);
  border:1px solid var(--glass-border);
  border-radius:10px;
  padding:12px 16px;
  color:var(--text);
  font-size:15px;
  transition:border-color .25s ease,box-shadow .25s ease;
  outline:none;
  min-height:44px;
  width:100%;
}
.form-group input::placeholder,.form-group textarea::placeholder{color:rgba(154,168,199,0.5)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(43,127,255,0.15);
}
.form-group select{
  appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='%239AA8C7' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 16px center;
  padding-right:42px;
  cursor:pointer;
}
.form-group select option{background:#0D1930;color:var(--text)}
.form-group textarea{resize:vertical;min-height:90px}
.cta-submit{
  grid-column:1/-1;
  width:100%;
  margin-top:6px;
}
.btn-submit{
  width:100%;
  padding:14px 28px;
  font-size:16px;
}
.security-note{
  grid-column:1/-1;
  text-align:center;
  font-size:13px;
  color:rgba(154,168,199,0.6);
  margin-top:10px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:6px;
}
.security-note i{color:var(--success)}

/* ===== 页脚 ===== */
.site-footer{
  background:#081021;
  border-top:1px solid var(--glass-border);
  padding:56px 0 0;
  margin-top:auto;
}
.footer-inner{
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:48px;
}
.footer-logo{
  font-size:24px;
  font-weight:700;
  color:var(--text);
  letter-spacing:0.02em;
  margin-bottom:14px;
}
.footer-brand p{
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.8;
  max-width:320px;
}
.footer-links h4,.footer-contact h4{
  font-size:16px;
  font-weight:600;
  color:var(--text);
  margin-bottom:16px;
}
.footer-links a{
  display:block;
  padding:6px 0;
  font-size:14px;
  color:var(--text-secondary);
  transition:color .2s ease,padding-left .2s ease;
}
.footer-links a:hover{color:var(--primary);padding-left:6px}
.footer-contact p{
  font-size:14px;
  color:var(--text-secondary);
  padding:6px 0;
  display:flex;
  align-items:center;
  gap:10px;
}
.footer-contact i{color:var(--primary);width:18px;text-align:center}
.footer-bottom{
  margin-top:48px;
  border-top:1px solid rgba(255,255,255,0.06);
  padding:20px 24px;
  text-align:center;
}
.footer-bottom p{
  font-size:12px;
  color:rgba(154,168,199,0.5);
}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  :root{--nav-width:64px}
  .side-nav .brand-text{font-size:11px}
  .nav-item span{font-size:11px}
  .nav-item i{font-size:17px}
  .nav-menu{padding:0 6px}
}

@media (max-width:767px){
  .side-nav{display:none}
  .mobile-header{display:flex}
  .main-wrap{margin-left:0;padding-top:64px}
  .scene-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:32px}
  .cta-form{grid-template-columns:1fr}
  .timeline::before{left:20px}
  .timeline-item,.timeline-item:nth-child(odd),.timeline-item:nth-child(even){
    width:100%;
    left:0;
    padding-left:52px;
    padding-right:0;
    text-align:left;
    justify-content:flex-start;
  }
  .timeline-item:nth-child(odd) .timeline-dot,.timeline-item:nth-child(even) .timeline-dot{
    left:0;
    right:auto;
  }
  .timeline-item:nth-child(odd){
    padding-left:52px;
    padding-right:0;
  }
  .timeline-card{
    min-width:0;
    width:100%;
    max-width:none;
  }
  .page-hero{padding:48px 20px 56px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .full-banner{padding:28px 20px;min-height:0}
}

@media (max-width:520px){
  .content{padding:0 16px}
  .footer-inner{padding:0 16px}
  .cta-card{padding:28px 20px}
  .faq-item summary{padding:16px 18px}
  .faq-item .faq-answer{padding-left:18px;padding-right:18px}
  .btn{padding:12px 20px}
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.12);border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,0.2)}

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