/* roulang page: index */
:root {
  --primary: #10b981;
  --primary-light: #34d399;
  --primary-dark: #059669;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --bg-deep: #060d1a;
  --bg-body: #0b1424;
  --bg-card: #111d30;
  --bg-card-hover: #17263d;
  --bg-input: rgba(15, 23, 42, 0.6);
  --border-line: rgba(148, 163, 184, 0.14);
  --text-main: #e8edf4;
  --text-body: #c0cddb;
  --text-dim: #8496b0;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.45);
  --space-section: 96px;
  --space-mobile: 60px;
  --header-height: 76px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--bg-body);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease;
}

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

button, input {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn i {
  font-size: 14px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 6px 24px rgba(16, 185, 129, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(16, 185, 129, 0.45);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text-main);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background: rgba(16, 185, 129, 0.12);
  color: var(--primary-light);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}

.btn-lg {
  padding: 16px 38px;
  font-size: 17px;
}

.btn:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ============ 标签 ============ */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.15);
  color: var(--primary-light);
  letter-spacing: 0.3px;
}

.tag-warm {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-light);
}

/* ============ 头部导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 20, 36, 0.86);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
  height: var(--header-height);
}

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

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

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: linear-gradient(90deg, #e8edf4, #ffffff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 auto;
}

.nav-link {
  padding: 9px 20px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 500;
  color: var(--text-body);
  transition: all 0.25s ease;
  position: relative;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.nav-link.active {
  color: var(--primary-light);
  background: rgba(16, 185, 129, 0.12);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-input);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-full);
  padding: 7px 8px 7px 18px;
  width: 210px;
  transition: all 0.3s ease;
}

.search-box:focus-within {
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.12);
}

.search-box input {
  flex: 1;
  font-size: 14px;
  color: var(--text-main);
  background: transparent;
  outline: none;
}

.search-box input::placeholder {
  color: var(--text-dim);
}

.search-box button {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.25s ease;
  background: transparent;
}

.search-box button:hover {
  color: var(--primary-light);
  background: rgba(16, 185, 129, 0.12);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--text-main);
  cursor: pointer;
  border: 1px solid var(--border-line);
  background: rgba(255, 255, 255, 0.04);
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
}

.nav-toggle.active {
  color: var(--primary-light);
  border-color: rgba(16, 185, 129, 0.3);
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 720px;
  display: flex;
  align-items: center;
  padding: 160px 0 110px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(6, 13, 26, 0.95) 0%, rgba(6, 13, 26, 0.8) 45%, rgba(11, 20, 36, 0.55) 100%);
  z-index: 1;
}

.hero-deco {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.hero-deco::before {
  content: '';
  position: absolute;
  right: -120px;
  top: 10%;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.18), transparent 70%);
}

.hero-deco::after {
  content: '';
  position: absolute;
  left: 15%;
  bottom: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.1), transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--primary-light);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 28px;
}

.hero-badge i {
  font-size: 12px;
}

.hero h1 {
  font-size: clamp(42px, 6vw, 68px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: 1px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 30%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  gap: 52px;
  padding-top: 28px;
  border-top: 1px solid rgba(148, 163, 184, 0.14);
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat strong {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.stat span {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 4px;
}

/* ============ 通用版块 ============ */
.section {
  padding: var(--space-section) 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.02);
}

.section-head {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px;
}

.section-head.left {
  text-align: left;
  margin-left: 0;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary-light);
  margin-bottom: 14px;
}

.section-eyebrow::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.section-head h2 {
  font-size: clamp(28px, 3.5vw, 38px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 14px;
  color: #fff;
}

.section-head p {
  font-size: 16px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ============ 频道分类 ============ */
.channel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.channel-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-line);
  transition: all 0.35s ease;
  display: block;
}

.channel-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(16, 185, 129, 0.3);
}

.channel-card__media {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.channel-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.channel-card:hover .channel-card__media img {
  transform: scale(1.04);
}

.channel-card__media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(17, 29, 48, 1) 0%, rgba(17, 29, 48, 0.2) 60%, transparent 100%);
}

.channel-card__play {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 2;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  transition: all 0.3s ease;
}

.channel-card:hover .channel-card__play {
  background: var(--primary);
  border-color: var(--primary);
  transform: scale(1.08);
}

.channel-card__body {
  padding: 28px;
  position: relative;
}

.channel-card__body h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}

.channel-card__body p {
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 20px;
}

.channel-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary-light);
}

.channel-card__cta i {
  transition: transform 0.25s ease;
}

.channel-card:hover .channel-card__cta i {
  transform: translateX(4px);
}

/* ============ 平台优势 ============ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  border: 1px solid var(--border-line);
  transition: all 0.3s ease;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(16, 185, 129, 0.25);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(16, 185, 129, 0.05));
  border: 1px solid rgba(16, 185, 129, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary-light);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}

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

/* ============ 资讯区 ============ */
.news-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  align-items: start;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.news-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-line);
  transition: all 0.3s ease;
  overflow: hidden;
}

.news-item:hover {
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: rgba(16, 185, 129, 0.25);
}

.news-item__link {
  display: block;
  padding: 26px 28px;
}

.news-item__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.news-item__meta time {
  font-size: 13px;
  color: var(--text-dim);
}

.news-item__meta time i {
  margin-right: 4px;
  font-size: 12px;
}

.news-item__title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 10px;
  transition: color 0.25s ease;
}

.news-item:hover .news-item__title {
  color: var(--primary-light);
}

.news-item__desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item__more {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-light);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-item__more i {
  transition: transform 0.25s ease;
}

.news-item:hover .news-item__more i {
  transform: translateX(4px);
}

.empty-tip {
  padding: 40px;
  text-align: center;
  color: var(--text-dim);
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-line);
  font-size: 15px;
}

/* 侧栏 */
.news-side {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.ranking-card,
.side-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 26px;
  border: 1px solid var(--border-line);
}

.ranking-head h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.ranking-head h3 i {
  color: var(--accent);
  font-size: 16px;
}

.ranking-list {
  counter-reset: rank;
}

.ranking-list li {
  counter-increment: rank;
  font-size: 14px;
  color: var(--text-body);
  padding: 12px 0;
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all 0.2s ease;
}

.ranking-list li:last-child {
  border-bottom: none;
}

.ranking-list li::before {
  content: counter(rank, decimal-leading-zero);
  font-size: 13px;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.7;
  width: 28px;
  flex-shrink: 0;
}

.ranking-list li a {
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.ranking-list li:hover {
  color: #fff;
  background: rgba(16, 185, 129, 0.06);
  border-radius: 8px;
  padding-left: 8px;
  padding-right: 8px;
  border-bottom-color: transparent;
}

.side-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.side-card p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 18px;
}

/* ============ 登录流程 ============ */
.process {
  position: relative;
  background: rgba(255, 255, 255, 0.02);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.5), rgba(16, 185, 129, 0.1));
  border-radius: 2px;
}

.step {
  text-align: center;
  position: relative;
  z-index: 1;
  padding: 0 12px;
}

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--primary);
  color: var(--primary-light);
  font-size: 22px;
  font-weight: 800;
  box-shadow: 0 0 0 6px rgba(16, 185, 129, 0.1);
  transition: all 0.3s ease;
}

.step:hover .step-num {
  background: var(--primary);
  color: #fff;
  transform: scale(1.05);
}

.step h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}

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

/* ============ 精选内容 ============ */
.spotlight-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.spot-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-line);
  transition: all 0.35s ease;
  display: block;
}

.spot-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(16, 185, 129, 0.3);
  background: var(--bg-card-hover);
}

.spot-card__media {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.spot-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.spot-card__media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(17, 29, 48, 0.9), transparent 60%);
}

.spot-card__play {
  position: absolute;
  bottom: 16px;
  right: 16px;
  z-index: 2;
  font-size: 40px;
  color: rgba(255, 255, 255, 0.85);
  transition: all 0.3s ease;
  text-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}

.spot-card:hover .spot-card__play {
  color: var(--primary-light);
  transform: scale(1.08);
}

.spot-card__body {
  padding: 24px;
}

.spot-card__body h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin: 12px 0 8px;
  line-height: 1.4;
}

.spot-card__body p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ============ FAQ ============ */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-line);
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item.active, .faq-item:hover {
  border-color: rgba(16, 185, 129, 0.3);
  box-shadow: var(--shadow-sm);
}

.faq-q {
  width: 100%;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  transition: color 0.25s ease;
}

.faq-q:hover {
  color: var(--primary-light);
}

.faq-q i {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--primary-light);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-q i {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: all 0.35s ease;
}

.faq-item.active .faq-a {
  max-height: 300px;
  padding: 0 24px 22px;
}

.faq-a p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.8;
  padding-top: 4px;
  border-top: 1px solid rgba(148, 163, 184, 0.08);
}

/* ============ CTA ============ */
.cta {
  position: relative;
  padding: 120px 0;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(6, 13, 26, 0.92), rgba(6, 13, 26, 0.78));
}

.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 640px;
}

.cta-content h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 18px;
}

.cta-content p {
  font-size: 16px;
  color: var(--text-body);
  line-height: 1.8;
  margin-bottom: 36px;
}

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

/* ============ 页脚 ============ */
.footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(148, 163, 184, 0.08);
  padding: 70px 0 0;
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 50px;
}

.footer-brand .logo {
  margin-bottom: 18px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
  max-width: 360px;
  margin-top: 14px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 22px;
  position: relative;
  padding-bottom: 12px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-dim);
  padding: 7px 0;
  transition: all 0.25s ease;
}

.footer-col a:hover {
  color: var(--primary-light);
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.08);
  padding: 22px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-dim);
}

.footer-bottom a {
  color: var(--primary-light);
}

/* ============ 响应式 ============ */
@media (max-width: 1080px) {
  .container {
    padding: 0 22px;
  }

  .search-box {
    width: 160px;
  }

  .nav-link {
    padding: 8px 14px;
    font-size: 14px;
  }

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

  .news-layout {
    grid-template-columns: 1fr;
  }

  .news-side {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
  }

  .process-steps::before {
    display: none;
  }
}

@media (max-width: 860px) {
  .header-inner {
    gap: 12px;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(11, 20, 36, 0.97);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border-line);
    box-shadow: var(--shadow-lg);
    margin: 0;
    display: none;
    z-index: 999;
  }

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

  .nav-link {
    padding: 14px 18px;
    font-size: 15px;
    border-radius: 12px;
  }

  .nav-link.active::after {
    display: none;
  }

  .header-actions .btn {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .search-box {
    display: none;
  }

  .hero {
    padding: 130px 0 80px;
    min-height: auto;
  }

  .hero-stats {
    gap: 30px;
  }

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

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

  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 600px) {
  .section {
    padding: var(--space-mobile) 0;
  }

  .hero {
    padding: 110px 0 60px;
  }

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

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

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

  .hero-stats {
    flex-wrap: wrap;
    gap: 24px;
  }

  .stat strong {
    font-size: 24px;
  }

  .section-head {
    margin-bottom: 40px;
  }

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

  .news-side {
    grid-template-columns: 1fr;
  }

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

  .cta {
    padding: 80px 0;
  }

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

  .footer-main {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .faq-q {
    font-size: 15px;
    padding: 18px 18px;
  }

  .channel-card__body {
    padding: 22px;
  }

  .news-item__link {
    padding: 20px;
  }

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

  .logo-icon {
    width: 34px;
    height: 34px;
    font-size: 15px;
  }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #e8452c;
  --primary-dark: #c9341e;
  --primary-light: #ff6b4a;
  --accent: #f7b731;
  --accent-light: #ffd86e;
  --dark: #0d1b2a;
  --dark-2: #132639;
  --dark-3: #1b3a4b;
  --bg: #f4f6f8;
  --bg-white: #ffffff;
  --text: #1e2a38;
  --text-body: #3c4a5c;
  --text-weak: #7a8898;
  --border: #e2e8f0;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(13, 27, 42, .06);
  --shadow: 0 8px 30px rgba(13, 27, 42, .10);
  --shadow-lg: 0 20px 50px rgba(13, 27, 42, .16);
  --container: 1200px;
  --gutter: 24px;
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition: all .25s ease;
}

/* ===== Reset & 基础 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text-body);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input, textarea { font-family: inherit; }

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 20px rgba(232, 69, 44, .30);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(232, 69, 44, .38);
  color: #fff;
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(232, 69, 44, .25); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(232, 69, 44, .05);
}
.btn-light {
  background: rgba(255,255,255,.14);
  color: #fff;
  border-color: rgba(255,255,255,.45);
  backdrop-filter: blur(6px);
}
.btn-light:hover { background: rgba(255,255,255,.26); border-color: #fff; color: #fff; }
.btn-sm { padding: 8px 20px; font-size: 13.5px; }

/* ===== Header / 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(13,27,42,.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 17px;
  box-shadow: 0 4px 14px rgba(232,69,44,.35);
}
.logo-text {
  font-size: 19px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: .5px;
}
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav .nav-link {
  padding: 8px 16px;
  border-radius: 30px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-body);
  transition: var(--transition);
}
.main-nav .nav-link:hover { color: var(--primary); background: rgba(232,69,44,.06); }
.main-nav .nav-link.active { color: var(--primary); background: rgba(232,69,44,.10); font-weight: 600; }
.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 2px 4px 2px 16px;
  height: 38px;
  width: 220px;
  transition: var(--transition);
}
.search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(232,69,44,.12); background: #fff; }
.search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 13.5px;
  color: var(--text);
  width: 100%;
}
.search-box input::placeholder { color: var(--text-weak); }
.search-box button {
  width: 30px;
  height: 30px;
  background: var(--primary);
  border-radius: 50%;
  color: #fff;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}
.search-box button:hover { background: var(--primary-dark); }
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font-size: 18px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}

/* ===== Footer ===== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,.75);
  padding: 64px 0 0;
  margin-top: 0;
}
.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo-text { color: #fff; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.60);
  max-width: 380px;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,.60);
  font-size: 14px;
  padding: 5px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--accent); transform: translateX(4px); }
.footer-bottom {
  padding: 22px 0;
  text-align: center;
  font-size: 13.5px;
  color: rgba(255,255,255,.45);
  border-top: 1px solid rgba(255,255,255,.06);
}
.footer-bottom a { color: rgba(255,255,255,.65); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== 页面Banner ===== */
.page-hero {
  position: relative;
  padding: 90px 0 110px;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 40%, var(--dark-3) 100%);
  color: #fff;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: .28;
  z-index: 0;
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 120px;
  background: linear-gradient(transparent, rgba(244,246,248,1));
  z-index: 1;
}
.page-hero .container { position: relative; z-index: 2; }
.hero-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: rgba(255,255,255,.55);
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 26px;
  backdrop-filter: blur(6px);
}
.hero-breadcrumb i { font-size: 11px; }
.hero-breadcrumb a:hover { color: var(--accent); }
.page-hero h1 {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.page-hero h1 span { color: var(--accent); }
.page-hero .hero-desc {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255,255,255,.72);
  max-width: 720px;
  margin-bottom: 30px;
}
.page-hero .hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-hero .hero-tags span {
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 13px;
  color: rgba(255,255,255,.80);
  backdrop-filter: blur(4px);
}
.page-hero .hero-actions { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }

/* ===== 通用板块 ===== */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-white); }
.section-head {
  text-align: center;
  margin-bottom: 50px;
}
.section-head .section-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(232,69,44,.08);
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: .5px;
  line-height: 1.3;
}
.section-head p {
  font-size: 15.5px;
  color: var(--text-weak);
  max-width: 560px;
  margin: 12px auto 0;
}

/* ===== 登录方式卡片 ===== */
.login-methods { margin-top: -60px; position: relative; z-index: 10; }
.methods-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.method-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
}
.method-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(232,69,44,.25);
}
.method-card .method-image {
  height: 180px;
  overflow: hidden;
  position: relative;
}
.method-card .method-image img { width: 100%; height: 100%; object-fit: cover; }
.method-card .method-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(13,27,42,.35));
}
.method-card .method-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: var(--accent);
  color: var(--dark);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 50px;
  box-shadow: 0 4px 12px rgba(247,183,49,.4);
}
.method-card .method-content { padding: 26px 26px 30px; }
.method-card .method-content h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}
.method-card .method-content p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  margin-bottom: 18px;
}
.method-card .method-content .feature-list {
  margin-bottom: 20px;
}
.method-card .method-content .feature-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--text-body);
  padding: 4px 0;
}
.method-card .method-content .feature-list li i {
  color: var(--primary);
  font-size: 13px;
  width: 16px;
}
.method-card .method-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.method-card .method-link:hover { gap: 12px; color: var(--primary-dark); }
.method-card .method-link i { font-size: 12px; }

/* ===== 登录步骤 ===== */
.steps-section {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 60%, var(--dark-3) 100%);
  position: relative;
  overflow: hidden;
}
.steps-section::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,69,44,.18), transparent 65%);
  top: -160px;
  right: -120px;
}
.steps-section::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(247,183,49,.12), transparent 65%);
  bottom: -140px;
  left: -100px;
}
.steps-section .section-head h2 { color: #fff; }
.steps-section .section-head p { color: rgba(255,255,255,.60); }
.steps-section .section-head .section-kicker { background: rgba(247,183,49,.15); color: var(--accent); }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 2;
}
.step-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  backdrop-filter: blur(8px);
  transition: var(--transition);
  position: relative;
}
.step-card:hover {
  background: rgba(255,255,255,.12);
  border-color: rgba(247,183,49,.25);
  transform: translateY(-4px);
}
.step-num {
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 20px;
  box-shadow: 0 8px 20px rgba(232,69,44,.30);
}
.step-card h3 {
  font-size: 17px;
  color: #fff;
  font-weight: 600;
  margin-bottom: 10px;
}
.step-card p {
  font-size: 13.5px;
  color: rgba(255,255,255,.58);
  line-height: 1.7;
  margin-bottom: 16px;
}
.step-card .step-tip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--accent-light);
  background: rgba(247,183,49,.10);
  padding: 4px 12px;
  border-radius: 50px;
}
.step-card .step-tip i { font-size: 11px; }
.steps-connect {
  display: none;
}

/* ===== 安全提示 ===== */
.security-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  margin-top: 50px;
}
.security-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 32px 34px;
  display: flex;
  gap: 20px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.security-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
  border-color: rgba(232,69,44,.18);
}
.security-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.security-icon.icon-blue { background: rgba(59,130,246,.12); color: #3b82f6; }
.security-icon.icon-green { background: rgba(16,185,129,.12); color: #10b981; }
.security-icon.icon-orange { background: rgba(232,69,44,.12); color: var(--primary); }
.security-icon.icon-purple { background: rgba(139,92,246,.12); color: #8b5cf6; }
.security-card h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 6px; }
.security-card p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-white); }
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  background: #fff;
  transition: var(--transition);
  overflow: hidden;
}
.faq-item:hover { border-color: rgba(232,69,44,.22); box-shadow: var(--shadow-sm); }
.faq-item.open { border-color: rgba(232,69,44,.30); box-shadow: var(--shadow); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 26px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
  transition: var(--transition);
}
.faq-q:hover { color: var(--primary); }
.faq-q .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--text-weak);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-icon {
  background: var(--primary);
  color: #fff;
  transform: rotate(45deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  padding: 0 26px;
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.75;
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding-bottom: 22px;
}
.faq-a p { margin-bottom: 8px; }
.faq-a a { color: var(--primary); font-weight: 500; }
.faq-a a:hover { text-decoration: underline; }

/* ===== CTA ===== */
.cta-section {
  padding: 70px 0 30px;
}
.cta-box {
  position: relative;
  background: linear-gradient(120deg, var(--dark) 0%, var(--dark-2) 50%, var(--dark-3) 100%);
  border-radius: var(--radius-lg);
  padding: 56px 50px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.cta-box::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,69,44,.25), transparent 65%);
  top: -100px;
  right: -60px;
}
.cta-box::after {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(247,183,49,.15), transparent 65%);
  bottom: -80px;
  left: 60px;
}
.cta-box .cta-content { position: relative; z-index: 2; flex: 1; min-width: 280px; }
.cta-box h2 { font-size: 30px; color: #fff; font-weight: 800; margin-bottom: 10px; }
.cta-box p { font-size: 15px; color: rgba(255,255,255,.65); max-width: 480px; line-height: 1.7; }
.cta-box .cta-actions { position: relative; z-index: 2; display: flex; gap: 12px; flex-wrap: wrap; }
.cta-box .btn-primary { background: var(--accent); color: var(--dark); box-shadow: 0 8px 24px rgba(247,183,49,.35); }
.cta-box .btn-primary:hover { background: var(--accent-light); box-shadow: 0 10px 30px rgba(247,183,49,.45); }

/* ===== 平台信息条 ===== */
.info-bar {
  background: var(--dark);
  padding: 80px 0 0;
}
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.info-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--radius);
  padding: 28px 30px;
  display: flex;
  gap: 18px;
  transition: var(--transition);
}
.info-card:hover { background: rgba(255,255,255,.10); border-color: rgba(247,183,49,.25); transform: translateY(-3px); }
.info-card i {
  font-size: 22px;
  color: var(--accent);
  margin-top: 4px;
  flex-shrink: 0;
}
.info-card h4 { font-size: 15.5px; color: #fff; font-weight: 600; margin-bottom: 6px; }
.info-card p { font-size: 13.5px; color: rgba(255,255,255,.55); line-height: 1.6; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 30px rgba(13,27,42,.1);
    padding: 16px 24px 20px;
    gap: 8px;
    z-index: 99;
  }
  .main-nav.open .nav-link { display: block; padding: 12px 16px; font-size: 15px; }
  .methods-grid { grid-template-columns: 1fr 1fr; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .page-hero h1 { font-size: 38px; }
}

@media (max-width: 768px) {
  .header-actions .search-box { display: none; }
  .footer-main { grid-template-columns: 1fr; gap: 36px; }
  .methods-grid { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .page-hero { padding: 70px 0 90px; }
  .page-hero h1 { font-size: 30px; }
  .page-hero .hero-desc { font-size: 15px; }
  .cta-box { padding: 40px 30px; flex-direction: column; text-align: center; }
  .cta-box .cta-actions { justify-content: center; }
  .steps-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .header-actions .btn-ghost { display: none; }
  .logo-text { font-size: 16px; }
  .logo-icon { width: 34px; height: 34px; font-size: 15px; }
  .header-inner { height: 64px; gap: 8px; }
  .section-head h2 { font-size: 26px; }
  .page-hero h1 { font-size: 26px; }
  .cta-box h2 { font-size: 23px; }
  .security-card { padding: 24px; flex-direction: column; gap: 12px; }
  .security-icon { width: 44px; height: 44px; font-size: 17px; }
  .method-card .method-content { padding: 20px; }
}

/* roulang page: article */
:root {
  --primary: #0c3a5e;
  --primary-2: #14507d;
  --primary-3: #1a6396;
  --accent: #f5a623;
  --accent-hover: #e08c0b;
  --dark-bg: #0b1f2e;
  --dark-card: #122a3d;
  --light-bg: #f0f4f8;
  --white: #fff;
  --text-main: #1e2a36;
  --text-sub: #56697a;
  --text-low: #8294a3;
  --border: #dfe8f0;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --shadow-sm: 0 4px 14px rgba(12, 58, 94, .07);
  --shadow-card: 0 12px 30px rgba(12, 58, 94, .1);
  --shadow-hover: 0 18px 44px rgba(12, 58, 94, .16);
  --transition: all .3s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  color: var(--text-main);
  background: var(--light-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button, input { font-family: inherit; border: none; outline: none; }
.container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  line-height: 1.4;
  border: 2px solid transparent;
}
.btn i { font-size: 14px; }
.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn-lg { padding: 16px 42px; font-size: 16px; }
.btn-primary { background: var(--accent); color: var(--dark-bg); box-shadow: 0 6px 22px rgba(245, 166, 35, .35); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 10px 30px rgba(245, 166, 35, .45); }
.btn-ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,.5); }
.btn-ghost:hover { background: rgba(255,255,255,.14); border-color: var(--white); }
.btn-outline-light { background: transparent; color: var(--white); border-color: rgba(255,255,255,.65); }
.btn-outline-light:hover { background: var(--white); color: var(--dark-bg); border-color: var(--white); transform: translateY(-2px); }
.btn-block { width: 100%; justify-content: center; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 31, 46, .92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 74px; gap: 20px; }
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-icon {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), #ff8a3d);
  display: flex; align-items: center; justify-content: center;
  color: var(--dark-bg);
  font-size: 18px;
  box-shadow: 0 6px 20px rgba(245, 166, 35, .35);
}
.logo-text { font-size: 21px; font-weight: 700; color: var(--white); letter-spacing: 1px; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.nav-link {
  padding: 8px 20px;
  border-radius: 40px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,.75);
  transition: var(--transition);
}
.nav-link:hover { color: var(--white); background: rgba(255,255,255,.1); }
.nav-link.active { color: var(--white); background: rgba(245,166,35,.18); font-weight: 600; }
.header-actions { display: flex; align-items: center; gap: 10px; }
.search-box {
  display: flex; align-items: center;
  background: rgba(255,255,255,.1);
  border-radius: 50px;
  padding: 0 6px 0 18px;
  height: 42px;
  width: 220px;
  transition: var(--transition);
}
.search-box:focus-within { background: rgba(255,255,255,.18); box-shadow: 0 0 0 2px rgba(245,166,35,.4); }
.search-box input { flex: 1; background: transparent; color: var(--white); font-size: 14px; border: none; }
.search-box input::placeholder { color: rgba(255,255,255,.5); }
.search-box button { width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: var(--dark-bg); cursor: pointer; transition: var(--transition); }
.search-box button:hover { background: var(--accent-hover); }
.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: 10px;
  background: rgba(255,255,255,.1);
  color: var(--white);
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* Article Hero */
.article-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 80px 0 70px;
  color: var(--white);
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(11,31,46,.92) 20%, rgba(12,58,94,.72) 60%, rgba(11,31,46,.55) 100%);
}
.article-hero .container { position: relative; z-index: 2; }
.article-breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,.65);
  margin-bottom: 20px;
}
.article-breadcrumb a { color: rgba(255,255,255,.65); }
.article-breadcrumb a:hover { color: var(--accent); }
.article-breadcrumb span:last-child { color: rgba(255,255,255,.9); }
.article-category {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: var(--dark-bg);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 40px;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.article-title {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.3;
  max-width: 860px;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0,0,0,.25);
}
.article-meta { display: flex; align-items: center; gap: 20px; font-size: 14px; color: rgba(255,255,255,.7); }
.meta-item { display: flex; align-items: center; gap: 7px; }
.meta-item i { color: var(--accent); }

/* Article Body */
.article-section { padding: 60px 0 80px; }
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 40px;
  align-items: start;
}
.article-main {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 42px 48px;
}
.post-content { color: var(--text-main); font-size: 16px; }
.post-content p { margin-bottom: 22px; line-height: 1.9; }
.post-content h2 { font-size: 26px; font-weight: 700; color: var(--primary); margin: 36px 0 18px; padding-left: 14px; border-left: 4px solid var(--accent); }
.post-content h3 { font-size: 21px; font-weight: 600; color: var(--primary-2); margin: 28px 0 14px; }
.post-content img { border-radius: var(--radius-md); margin: 24px 0; box-shadow: var(--shadow-card); }
.post-content ul, .post-content ol { margin-bottom: 22px; padding-left: 22px; }
.post-content ul li, .post-content ol li { margin-bottom: 8px; position: relative; }
.post-content ul li::before { content: ''; position: absolute; left: -18px; top: 11px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.post-content blockquote {
  margin: 28px 0;
  padding: 20px 26px;
  background: var(--light-bg);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-sub);
  font-style: italic;
}
.not-found {
  text-align: center;
  padding: 60px 20px;
}
.not-found h2 { font-size: 28px; color: var(--primary); margin-bottom: 14px; }
.not-found p { color: var(--text-sub); margin-bottom: 30px; }
.post-footer-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  gap: 14px;
  flex-wrap: wrap;
}
.post-footer-nav .btn-ghost { color: var(--text-sub); border-color: var(--border); }
.post-footer-nav .btn-ghost:hover { background: var(--light-bg); border-color: var(--primary); color: var(--primary); }

/* Sidebar */
.article-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 28px;
}
.sidebar-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--light-bg);
  position: relative;
}
.sidebar-card h3::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 34px;
  height: 2px;
  background: var(--accent);
}
.sidebar-post {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
  transition: var(--transition);
}
.sidebar-post:last-child { border-bottom: none; }
.sidebar-post:hover { padding-left: 8px; }
.sidebar-post-title { font-size: 14px; font-weight: 600; color: var(--text-main); line-height: 1.5; }
.sidebar-post:hover .sidebar-post-title { color: var(--primary-3); }
.sidebar-post-cat { font-size: 12px; color: var(--text-low); }
.sidebar-cta {
  background: linear-gradient(135deg, var(--dark-bg), var(--primary-2));
  color: var(--white);
}
.sidebar-cta h3 { color: var(--white); border-bottom-color: rgba(255,255,255,.15); }
.sidebar-cta p { font-size: 14px; color: rgba(255,255,255,.75); margin-bottom: 22px; }

/* Related */
.related-section {
  padding: 70px 0;
  background: var(--white);
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
}
.section-head h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--primary);
  position: relative;
  padding-left: 16px;
}
.section-head h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 24px;
  border-radius: 4px;
  background: var(--accent);
}
.text-link { font-size: 14px; font-weight: 600; color: var(--primary-3); }
.text-link:hover { color: var(--accent); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.related-cover {
  position: relative;
  height: 170px;
  overflow: hidden;
}
.related-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.related-card:hover .related-cover img { transform: scale(1.06); }
.cover-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(11, 31, 46, .82);
  color: var(--white);
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 30px;
  backdrop-filter: blur(4px);
}
.related-body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
.related-body h3 { font-size: 16px; font-weight: 600; color: var(--text-main); line-height: 1.5; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-body p { font-size: 13px; color: var(--text-sub); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 14px; flex: 1; }
.related-date { font-size: 12px; color: var(--text-low); display: flex; align-items: center; gap: 6px; }

/* CTA */
.cta-section {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 90px 0;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11,31,46,.92), rgba(12,58,94,.85));
}
.cta-section .container { position: relative; z-index: 2; }
.cta-content { max-width: 680px; margin: 0 auto; }
.cta-content h2 { font-size: 32px; font-weight: 700; color: var(--white); margin-bottom: 16px; line-height: 1.3; }
.cta-content p { font-size: 16px; color: rgba(255,255,255,.75); margin-bottom: 34px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Footer */
.footer {
  background: var(--dark-bg);
  color: rgba(255,255,255,.7);
  padding: 60px 0 0;
}
.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.55); max-width: 380px; }
.footer-col h4 { color: var(--white); font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,.6);
  padding: 5px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--accent); padding-left: 6px; }
.footer-bottom {
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,.4);
}
.footer-bottom a { color: rgba(255,255,255,.55); }
.footer-bottom a:hover { color: var(--accent); }

/* Responsive */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { flex-direction: row; flex-wrap: wrap; }
  .sidebar-card { flex: 1 1 calc(50% - 12px); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .search-box { width: 160px; }
}
@media (max-width: 768px) {
  .header-inner { height: 64px; }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--dark-bg);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px;
    transform: translateY(-120%);
    transition: var(--transition);
    box-shadow: 0 20px 40px rgba(0,0,0,.3);
    z-index: 99;
  }
  .main-nav.open { transform: translateY(0); }
  .nav-link { padding: 12px 20px; }
  .search-box { display: none; }
  .nav-toggle { display: flex; }
  .header-actions .btn-ghost { display: none; }
  .article-hero { padding: 60px 0 50px; }
  .article-title { font-size: 28px; }
  .article-main { padding: 26px 22px; }
  .article-section { padding: 40px 0 50px; }
  .post-content h2 { font-size: 22px; }
  .related-grid { grid-template-columns: 1fr; }
  .cta-content h2 { font-size: 24px; }
  .footer-main { grid-template-columns: 1fr; gap: 30px; }
  .cta-buttons .btn { width: 100%; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .logo-text { font-size: 18px; }
  .logo-icon { width: 34px; height: 34px; font-size: 15px; }
  .header-actions .btn-primary { display: none; }
  .article-title { font-size: 24px; }
  .article-meta { flex-direction: column; gap: 8px; align-items: flex-start; }
  .related-grid { grid-template-columns: 1fr; }
  .sidebar-card { flex: 1 1 100%; }
  .post-footer-nav { flex-direction: column; }
  .post-footer-nav .btn { width: 100%; }
}

/* roulang page: category2 */
:root {
  --bg: #0b1020;
  --bg-soft: #0e1428;
  --surface: #151d34;
  --card: #1a2340;
  --card-hover: #202b4d;
  --border: rgba(255, 255, 255, .08);
  --border-strong: rgba(255, 255, 255, .14);
  --primary: #4f8cff;
  --primary-2: #22d3ee;
  --accent: #ffb454;
  --text: #eaf0fb;
  --muted: #93a1c0;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 20px 50px rgba(0, 0, 0, .35);
  --transition: .25s ease;
  --container: 1200px;
  --section: 110px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

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

button,
input {
  font-family: inherit;
  outline: none;
  border: none;
  background: none;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.2;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:focus-visible,
.nav-toggle:focus-visible {
  outline: 3px solid rgba(79, 140, 255, .5);
  outline-offset: 2px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  box-shadow: 0 10px 26px rgba(79, 140, 255, .35);
}

.btn-primary:hover {
  box-shadow: 0 14px 34px rgba(79, 140, 255, .5);
}

.btn-ghost {
  background: rgba(255, 255, 255, .06);
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(255, 255, 255, .25);
}

.btn-light {
  background: #fff;
  color: #0b1020;
}

.btn-light:hover {
  background: #eef2ff;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
  border-radius: 10px;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 16, 32, .84);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 76px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: .5px;
  color: var(--text);
  flex-shrink: 0;
}

.logo-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  font-size: 17px;
  box-shadow: 0 6px 18px rgba(79, 140, 255, .4);
}

.logo-text {
  font-weight: 800;
}

.main-nav {
  display: flex;
  gap: 6px;
  margin-left: 10px;
}

.nav-link {
  padding: 9px 16px;
  border-radius: 10px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  transition: all var(--transition);
}

.nav-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, .06);
}

.nav-link.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(79, 140, 255, .22), rgba(34, 211, 238, .14));
  box-shadow: inset 0 0 0 1px rgba(79, 140, 255, .25);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 4px 4px 16px;
  transition: all var(--transition);
}

.search-box:focus-within {
  border-color: rgba(79, 140, 255, .45);
  box-shadow: 0 0 0 3px rgba(79, 140, 255, .12);
}

.search-box input {
  width: 180px;
  font-size: 14px;
  color: var(--text);
}

.search-box input::placeholder {
  color: rgba(147, 161, 192, .6);
}

.search-box button {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 13px;
  transition: opacity var(--transition);
}

.search-box button:hover {
  opacity: .85;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 16px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, .1);
}

/* ===== Hero ===== */
.page-hero {
  position: relative;
  padding: 130px 0 110px;
  background: var(--bg-soft);
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(79, 140, 255, .16), transparent 55%);
  z-index: 1;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .28;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  background: rgba(79, 140, 255, .14);
  color: #9db8ff;
  border: 1px solid rgba(79, 140, 255, .3);
  letter-spacing: .5px;
}

.badge-dot::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.hero-content h1 {
  font-size: 52px;
  line-height: 1.2;
  font-weight: 800;
  margin: 20px 0 18px;
  letter-spacing: -1px;
}

.grad-text {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 18px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 640px;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ===== Sections ===== */
.section {
  padding: var(--section) 0;
}

.section-head {
  text-align: center;
  max-width: 660px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(79, 140, 255, .12);
  border: 1px solid rgba(79, 140, 255, .28);
  color: #9db8ff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
}

.section-head h2 {
  font-size: 37px;
  line-height: 1.3;
  font-weight: 800;
  margin-top: 16px;
}

.section-head p {
  color: var(--muted);
  margin-top: 10px;
  font-size: 16px;
  line-height: 1.7;
}

/* ===== Services ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-2));
  opacity: 0;
  transition: all var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  font-size: 20px;
  color: #fff;
  background: linear-gradient(135deg, rgba(79, 140, 255, .22), rgba(34, 211, 238, .16));
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.service-card p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  color: var(--primary-2);
  font-size: 14px;
  font-weight: 600;
  transition: gap var(--transition);
}

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

/* ===== Content / CMS ===== */
.content-section {
  background: var(--bg-soft);
}

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

.content-card {
  display: flex;
  gap: 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  transition: all var(--transition);
  align-items: flex-start;
}

.content-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--border-strong);
}

.content-card .cover {
  width: 170px;
  height: 118px;
  flex-shrink: 0;
  border-radius: 14px;
  overflow: hidden;
}

.content-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

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

.content-body {
  padding: 4px 2px 0;
}

.content-body .tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(34, 211, 238, .14);
  color: #7fe4f2;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .3px;
}

.content-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 10px 0 6px;
  line-height: 1.4;
}

.content-body p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

/* ===== Process ===== */
.flow-section {
  background: var(--bg);
}

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

.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 26px 28px;
  position: relative;
  transition: all var(--transition);
}

.step:hover {
  transform: translateY(-5px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}

.step-num {
  font-size: 44px;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.step h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 16px 0 8px;
}

.step p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

/* ===== Stats ===== */
.stats-section {
  position: relative;
  padding: 90px 0;
  background-size: cover;
  background-position: center;
}

.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 16, 32, .94), rgba(9, 14, 28, .88));
}

.stats-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-block {
  text-align: center;
  padding: 30px 16px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  transition: all var(--transition);
}

.stat-block:hover {
  border-color: var(--border-strong);
  transform: translateY(-4px);
}

.stat-num {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  background: linear-gradient(135deg, #fff, var(--primary-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  color: var(--muted);
  margin-top: 8px;
  font-size: 14px;
  letter-spacing: .5px;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-soft);
}

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

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0 24px;
  transition: all var(--transition);
}

.faq-item[open] {
  border-color: rgba(79, 140, 255, .35);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .25);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
}

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

.faq-item summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--muted);
  font-size: 14px;
  transition: transform .3s ease;
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
}

.faq-item p {
  padding: 0 0 22px;
  color: var(--muted);
  line-height: 1.8;
  font-size: 15px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 0 0 var(--section);
}

.cta-box {
  position: relative;
  padding: 66px 56px;
  border-radius: 28px;
  background: linear-gradient(135deg, rgba(79, 140, 255, .24), rgba(34, 211, 238, .12)), var(--surface);
  border: 1px solid var(--border-strong);
  text-align: center;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: rgba(79, 140, 255, .16);
  filter: blur(80px);
  top: -180px;
  right: -100px;
}

.cta-box h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  position: relative;
}

.cta-box p {
  color: var(--muted);
  max-width: 520px;
  margin: 14px auto 30px;
  line-height: 1.7;
  position: relative;
}

.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  position: relative;
}

/* ===== Footer ===== */
.footer {
  background: #070b16;
  border-top: 1px solid var(--border);
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 44px;
  padding: 64px 0 46px;
  border-bottom: 1px solid var(--border);
}

.footer-brand .logo {
  margin-bottom: 4px;
}

.footer-brand p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
  margin-top: 18px;
  max-width: 360px;
}

.footer-col h4 {
  font-size: 15px;
  letter-spacing: 1px;
  margin-bottom: 18px;
  color: var(--text);
  font-weight: 700;
}

.footer-col a {
  display: block;
  color: var(--muted);
  font-size: 14px;
  padding: 7px 0;
  transition: all var(--transition);
}

.footer-col a:hover {
  color: var(--primary-2);
  transform: translateX(4px);
}

.footer-bottom {
  padding: 26px 0;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.footer-bottom a {
  color: var(--muted);
  transition: color var(--transition);
}

.footer-bottom a:hover {
  color: var(--primary-2);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .main-nav {
    gap: 2px;
  }

  .nav-link {
    padding: 8px 12px;
    font-size: 14px;
  }

  .search-box input {
    width: 130px;
  }

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

  .content-list {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 860px) {
  .main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--bg-soft);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    transform: translateY(-140%);
    opacity: 0;
    pointer-events: none;
    transition: all .3s ease;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 30px 50px rgba(0, 0, 0, .3);
    margin-left: 0;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    padding: 12px 16px;
    font-size: 15px;
    border-radius: 12px;
  }

  .nav-toggle {
    display: inline-flex;
  }

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

  .hero-content h1 {
    font-size: 42px;
  }

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

@media (max-width: 520px) {
  :root {
    --section: 70px;
  }

  .container {
    padding: 0 20px;
  }

  .header-inner {
    gap: 10px;
    height: 68px;
  }

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

  .logo-icon {
    width: 34px;
    height: 34px;
    font-size: 15px;
  }

  .header-actions .btn-ghost {
    display: none;
  }

  .header-actions .btn-sm {
    padding: 8px 12px;
    font-size: 13px;
  }

  .main-nav {
    top: 68px;
  }

  .hero-content h1 {
    font-size: 34px;
  }

  .hero-content p {
    font-size: 16px;
  }

  .section-head h2 {
    font-size: 28px;
  }

  .services-grid,
  .steps,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    padding: 24px 20px;
  }

  .content-card {
    flex-direction: column;
  }

  .content-card .cover {
    width: 100%;
    height: auto;
    border-radius: 14px;
  }

  .cta-box {
    padding: 44px 22px;
    border-radius: 22px;
  }

  .cta-box h2 {
    font-size: 28px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 50px 0 36px;
  }
}