/* roulang page: index */
:root {
  --c-primary: #0b1a2e;
  --c-secondary: #102a45;
  --c-accent: #f0b90b;
  --c-accent-hover: #d4a308;
  --c-bg: #081626;
  --c-card: rgba(16, 42, 69, 0.72);
  --c-card-solid: #102a45;
  --c-text: #e8eef5;
  --c-text-weak: #8fa6bc;
  --c-border: rgba(240, 185, 11, 0.16);
  --c-border-solid: #1e3a5f;
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-xl: 0 30px 60px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 18px 40px rgba(0, 0, 0, 0.36);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.28);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.22);
  --space-section: 100px;
  --space-block: 60px;
  --container-max: 1200px;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "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(--c-text);
  background: var(--c-bg);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(240, 185, 11, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(20, 80, 140, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.3s ease; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }

::selection { background: rgba(240, 185, 11, 0.35); }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.grid-container { max-width: var(--container-max); }

/* ===== Header / 悬浮胶囊导航 ===== */
.site-header {
  position: fixed;
  top: 18px;
  left: 0;
  right: 0;
  z-index: 1000;
  pointer-events: none;
}

.nav-container {
  pointer-events: auto;
  background: rgba(10, 24, 40, 0.86);
  backdrop-filter: blur(18px);
  border: 1px solid rgba(240, 185, 11, 0.16);
  border-radius: 60px;
  padding: 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
  max-width: 1160px;
  margin: 0 auto;
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

.nav-container:hover {
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.55);
  background: rgba(12, 28, 46, 0.92);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  color: var(--c-text);
  white-space: nowrap;
  padding: 6px 16px;
  border-radius: 40px;
  transition: background 0.3s ease;
}

.brand i {
  color: var(--c-accent);
  font-size: 1.4rem;
}

.brand:hover { background: rgba(240, 185, 11, 0.1); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  padding: 8px 18px;
  border-radius: 40px;
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--c-text-weak);
  transition: all 0.3s ease;
}

.main-nav a:hover {
  color: var(--c-text);
  background: rgba(240, 185, 11, 0.12);
}

.main-nav a.active {
  color: var(--c-primary);
  background: var(--c-accent);
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(240, 185, 11, 0.35);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--c-accent);
  color: var(--c-primary);
  font-weight: 600;
  padding: 8px 20px;
  border-radius: 40px;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.nav-cta:hover {
  background: var(--c-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(240, 185, 11, 0.35);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--c-border);
  border-radius: 40px;
  color: var(--c-text);
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.nav-toggle:hover { background: rgba(240, 185, 11, 0.1); }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 30px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.3s ease;
  text-align: center;
}

.btn-primary {
  background: var(--c-accent);
  color: var(--c-primary);
  border-color: var(--c-accent);
  box-shadow: 0 6px 20px rgba(240, 185, 11, 0.35);
}

.btn-primary:hover {
  background: var(--c-accent-hover);
  border-color: var(--c-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(240, 185, 11, 0.45);
}

.btn-ghost {
  background: rgba(240, 185, 11, 0.08);
  color: var(--c-text);
  border-color: var(--c-border);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  background: rgba(240, 185, 11, 0.16);
  border-color: var(--c-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.btn:focus-visible, .main-nav a:focus-visible, .nav-toggle:focus-visible {
  outline: 3px solid rgba(240, 185, 11, 0.6);
  outline-offset: 2px;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  padding: 140px 0 80px;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 22, 38, 0.82) 0%, rgba(8, 22, 38, 0.55) 50%, rgba(8, 22, 38, 0.9) 100%);
  z-index: -1;
}

.hero-inner {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  padding: 0 20px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(240, 185, 11, 0.12);
  border: 1px solid var(--c-border);
  color: var(--c-accent);
  padding: 8px 22px;
  border-radius: 40px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 28px;
  backdrop-filter: blur(10px);
}

.hero-badge i { font-size: 0.9rem; }

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 60%, #f0b90b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  color: var(--c-text-weak);
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.75;
}

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

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 780px;
  margin: 0 auto;
  padding: 28px 24px;
  background: rgba(10, 26, 44, 0.55);
  border: 1px solid rgba(240, 185, 11, 0.12);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
}

.hero-stat {
  text-align: center;
  padding: 8px 4px;
}

.hero-stat-value {
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--c-accent);
  line-height: 1.2;
}

.hero-stat-label {
  font-size: 0.82rem;
  color: var(--c-text-weak);
  margin-top: 4px;
  letter-spacing: 0.5px;
}

/* ===== 通用板块 ===== */
.section {
  padding: var(--space-section) 0;
  position: relative;
}

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

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--c-accent);
  background: rgba(240, 185, 11, 0.1);
  border: 1px solid var(--c-border);
  padding: 5px 16px;
  border-radius: 40px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--c-text-weak);
  font-size: 1rem;
  line-height: 1.7;
}

/* ===== 核心说明 ===== */
.intro-section {
  background: linear-gradient(180deg, var(--c-bg) 0%, #0d1f33 100%);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.intro-copy h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.25;
}

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

.intro-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.intro-feature {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.intro-feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.intro-feature i {
  font-size: 1.5rem;
  color: var(--c-accent);
  margin-bottom: 12px;
  display: block;
}

.intro-feature h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.intro-feature p {
  font-size: 0.85rem;
  color: var(--c-text-weak);
  line-height: 1.5;
}

/* ===== 分类入口 ===== */
.category-section {
  background: var(--c-bg);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.category-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  border: 1px solid var(--c-border);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  text-decoration: none;
}

.category-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  transition: transform 0.6s ease;
}

.category-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 22, 38, 0.1) 0%, rgba(8, 22, 38, 0.92) 100%);
  z-index: 1;
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

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

.category-content {
  position: relative;
  z-index: 2;
  padding: 32px 28px;
  width: 100%;
}

.category-content .badge {
  display: inline-block;
  background: rgba(240, 185, 11, 0.9);
  color: var(--c-primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 40px;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.category-content h3 {
  font-size: 1.45rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.category-content p {
  color: var(--c-text-weak);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 14px;
}

.category-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--c-accent);
  font-size: 0.9rem;
  font-weight: 600;
  transition: gap 0.3s ease;
}

.category-link:hover { gap: 12px; }

/* ===== 功能特色 ===== */
.features-section {
  background: linear-gradient(180deg, #0d1f33 0%, var(--c-bg) 100%);
}

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

.feature-card {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  backdrop-filter: blur(8px);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(240, 185, 11, 0.4);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(240, 185, 11, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.5rem;
  color: var(--c-accent);
}

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.87rem;
  color: var(--c-text-weak);
  line-height: 1.6;
}

/* ===== 最新信息 ===== */
.news-section {
  background: var(--c-bg);
}

.news-wrap {
  max-width: 860px;
  margin: 0 auto;
}

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

.news-card {
  display: block;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.news-card:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(240, 185, 11, 0.3);
}

.news-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  flex-wrap: wrap;
  gap: 8px;
}

.news-meta .badge {
  background: rgba(240, 185, 11, 0.14);
  color: var(--c-accent);
  padding: 3px 12px;
  border-radius: 40px;
  font-size: 0.75rem;
  font-weight: 600;
}

.news-meta time {
  font-size: 0.78rem;
  color: var(--c-text-weak);
}

.news-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.5;
}

.news-card p {
  font-size: 0.88rem;
  color: var(--c-text-weak);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.empty-tip {
  text-align: center;
  padding: 60px 20px;
  color: var(--c-text-weak);
  background: var(--c-card);
  border: 1px dashed var(--c-border);
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
}

/* ===== 流程 ===== */
.process-section {
  background: linear-gradient(135deg, #0d1f33 0%, #0b1a2e 100%);
}

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

.process-step {
  position: relative;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 36px 24px 28px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.process-step:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.process-step::before {
  counter-increment: process;
  content: counter(process, decimal-leading-zero);
  position: absolute;
  top: 18px;
  right: 20px;
  font-size: 1.6rem;
  font-weight: 800;
  color: rgba(240, 185, 11, 0.2);
  line-height: 1;
}

.process-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  background: rgba(240, 185, 11, 0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--c-accent);
}

.process-step h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.84rem;
  color: var(--c-text-weak);
  line-height: 1.6;
}

/* ===== 数据面板 ===== */
.data-section {
  background: var(--c-bg);
}

.data-panel {
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  border-radius: var(--radius-xl);
  padding: 64px 48px;
  position: relative;
  isolation: isolate;
  border: 1px solid var(--c-border);
  overflow: hidden;
}

.data-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(8, 22, 38, 0.88);
  z-index: -1;
}

.data-panel-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.data-panel-header h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.data-panel-header p {
  color: var(--c-text-weak);
  font-size: 0.95rem;
}

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

.data-item {
  background: rgba(10, 26, 44, 0.6);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.data-item:hover {
  border-color: rgba(240, 185, 11, 0.4);
  transform: translateY(-4px);
}

.data-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--c-accent);
  line-height: 1.2;
  margin-bottom: 4px;
}

.data-label {
  font-size: 0.85rem;
  color: var(--c-text-weak);
}

/* ===== FAQ ===== */
.faq-section {
  background: linear-gradient(180deg, var(--c-bg) 0%, #0d1f33 100%);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item:hover { border-color: rgba(240, 185, 11, 0.3); }

.faq-item summary {
  padding: 20px 24px;
  cursor: pointer;
  font-size: 0.98rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  list-style: none;
}

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

.faq-item summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 0.8rem;
  color: var(--c-accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

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

.faq-item .faq-answer {
  padding: 0 24px 20px;
  color: var(--c-text-weak);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--c-bg);
  padding: 80px 0;
}

.cta-box {
  background: linear-gradient(135deg, rgba(240, 185, 11, 0.12) 0%, rgba(16, 42, 69, 0.9) 50%);
  border: 1px solid rgba(240, 185, 11, 0.25);
  border-radius: var(--radius-xl);
  padding: 60px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(240, 185, 11, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.cta-box h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 14px;
}

.cta-box p {
  color: var(--c-text-weak);
  margin-bottom: 32px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

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

/* ===== 页脚 ===== */
.site-footer {
  background: #060f1a;
  border-top: 1px solid var(--c-border-solid);
  padding: 70px 0 30px;
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 50px;
}

.footer-brand .footer-logo {
  font-size: 1.2rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  color: var(--c-text);
}

.footer-brand .footer-logo i {
  color: var(--c-accent);
  font-size: 1.3rem;
}

.footer-brand p {
  color: var(--c-text-weak);
  font-size: 0.88rem;
  line-height: 1.7;
  max-width: 360px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--c-text);
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--c-accent);
  border-radius: 2px;
}

.footer-col a {
  display: block;
  color: var(--c-text-weak);
  font-size: 0.88rem;
  padding: 5px 0;
  transition: color 0.3s ease, padding-left 0.3s ease;
}

.footer-col a:hover {
  color: var(--c-accent);
  padding-left: 8px;
}

.footer-col p {
  color: var(--c-text-weak);
  font-size: 0.88rem;
  margin-bottom: 6px;
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  color: var(--c-text-weak);
  font-size: 0.8rem;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  :root { --space-section: 70px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-grid { grid-template-columns: 1fr; gap: 32px; }
  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-container { border-radius: 20px; max-width: calc(100% - 32px); }
  .main-nav {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 16px;
    right: 16px;
    background: rgba(10, 24, 40, 0.96);
    backdrop-filter: blur(20px);
    border: 1px solid var(--c-border);
    border-radius: 16px;
    flex-direction: column;
    padding: 16px;
    gap: 8px;
    box-shadow: var(--shadow-lg);
  }
  .main-nav.open { display: flex; }
  .main-nav a { width: 100%; text-align: center; }
  .nav-toggle { display: inline-flex; }
  .nav-cta { display: none; }
  .category-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .data-panel { padding: 40px 24px; }
  .cta-box { padding: 40px 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .intro-features { grid-template-columns: 1fr; }
  .news-card { padding: 18px 20px; }
  .process-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  :root { --space-section: 56px; }
  .container { padding: 0 16px; }
  .hero { padding: 120px 0 50px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .section-header { margin-bottom: 36px; }
  .features-grid { grid-template-columns: 1fr; }
  .data-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; padding: 20px 12px; }
  .hero-stat-value { font-size: 1.4rem; }
  .hero-stat-label { font-size: 0.72rem; }
  .brand { font-size: 1rem; padding: 6px 10px; }
  .brand i { font-size: 1.2rem; }
}

/* roulang page: category1 */
:root {
  --primary: #0d5fa6;
  --primary-dark: #0a4a80;
  --primary-deep: #072e4e;
  --primary-light: #e8f2fa;
  --accent: #f5b942;
  --accent-dark: #d99e26;
  --bg-light: #f4f7fa;
  --bg-gray: #eef2f6;
  --bg-dark: #0b1d2e;
  --text-main: #1c2b3a;
  --text-weak: #6b7a8a;
  --border: #e2e8ee;
  --white: #ffffff;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-xs: 0 2px 8px rgba(12,32,52,.05);
  --shadow-sm: 0 4px 16px rgba(12,32,52,.07);
  --shadow-md: 0 10px 30px rgba(12,32,52,.1);
  --shadow-lg: 0 20px 50px rgba(12,32,52,.16);
  --translate: translateY(-4px);
  --transition: .3s ease;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg-light);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 28px; }

/* ===== Header / Navigation ===== */
.site-header {
  position: sticky;
  top: 16px;
  z-index: 100;
  padding: 0 16px;
  pointer-events: none;
}
.nav-container {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,.85);
  box-shadow: var(--shadow-md);
  border-radius: 50px;
  padding: 12px 24px;
  pointer-events: auto;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: .5px;
  white-space: nowrap;
}
.brand i {
  font-size: 26px;
  color: var(--accent);
  background: linear-gradient(135deg, var(--accent), #ffd87d);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
}
.main-nav a {
  position: relative;
  padding: 8px 18px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  transition: all var(--transition);
}
.main-nav a:hover {
  color: var(--primary);
  background: var(--primary-light);
}
.main-nav a.active {
  color: var(--white);
  background: var(--primary);
  box-shadow: 0 4px 14px rgba(13,95,166,.3);
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 22px;
  border-radius: 30px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #1c2b3a;
  font-weight: 700;
  font-size: 15px;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(245,185,66,.35);
  transition: all var(--transition);
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245,185,66,.5);
  color: #1c2b3a;
}
.nav-toggle {
  display: none;
  background: var(--primary-light);
  border: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  font-size: 18px;
  color: var(--primary);
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.nav-toggle:hover { background: var(--primary); color: var(--white); }

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  padding: 120px 0 90px;
  background-image: linear-gradient(rgba(7,30,47,.78), rgba(7,30,47,.82)), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  color: var(--white);
  text-align: center;
}
.page-banner::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--bg-light);
  border-radius: 60px 60px 0 0;
}
.page-banner .container { position: relative; z-index: 2; }
.page-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.3);
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .5px;
  margin-bottom: 18px;
}
.page-badge i { color: var(--accent); }
.page-banner h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 18px;
  letter-spacing: 1px;
}
.page-banner h1 span { color: var(--accent); }
.page-banner .banner-desc {
  max-width: 680px;
  margin: 0 auto 32px;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255,255,255,.85);
}
.banner-btns {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 15px;
  transition: all var(--transition);
  border: none;
}
.btn-primary {
  background: var(--accent);
  color: #1c2b3a;
  box-shadow: 0 6px 18px rgba(245,185,66,.4);
}
.btn-primary:hover { background: #ffc96a; color: #1c2b3a; transform: var(--translate); box-shadow: 0 10px 28px rgba(245,185,66,.5); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255,255,255,.6);
}
.btn-outline:hover { background: rgba(255,255,255,.12); color: var(--white); border-color: var(--white); transform: var(--translate); }
.banner-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  margin-top: 40px;
}
.banner-stats .stat-item { text-align: center; }
.banner-stats .stat-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--accent);
  display: block;
}
.banner-stats .stat-label {
  font-size: 14px;
  color: rgba(255,255,255,.75);
  margin-top: 4px;
}

/* ===== Section base ===== */
.section {
  padding: 96px 0;
}
.section-alt { background: var(--white); }
.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}
.section-tag {
  display: inline-block;
  padding: 5px 16px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .5px;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 14px;
  color: var(--text-main);
}
.section-head h2 i { color: var(--accent); }
.section-head p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-weak);
  margin: 0;
}

/* ===== Access Cards ===== */
.access-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.access-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.access-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition);
}
.access-card:hover {
  transform: var(--translate);
  box-shadow: var(--shadow-md);
  border-color: rgba(13,95,166,.25);
}
.access-card:hover::before { opacity: 1; }
.access-icon {
  width: 66px;
  height: 66px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  margin-bottom: 22px;
  box-shadow: 0 8px 20px rgba(13,95,166,.28);
}
.access-card:nth-child(2) .access-icon {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  box-shadow: 0 8px 20px rgba(245,185,66,.35);
  color: #1c2b3a;
}
.access-card:nth-child(3) .access-icon {
  background: linear-gradient(135deg, #2ecc9a, #23a97d);
  box-shadow: 0 8px 20px rgba(46,204,154,.3);
}
.access-card h3 { font-size: 20px; font-weight: 700; margin: 0 0 12px; }
.access-card p { font-size: 15px; line-height: 1.8; color: var(--text-weak); margin: 0; }
.access-card .access-tag {
  display: inline-block;
  margin-top: 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: 20px;
}

/* ===== Steps Section ===== */
.steps-section {
  background: var(--bg-dark);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.steps-section::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(13,95,166,.45), transparent 70%);
  top: -120px;
  right: -100px;
  pointer-events: none;
}
.steps-section .section-tag {
  background: rgba(255,255,255,.12);
  color: var(--accent);
}
.steps-section .section-head h2 { color: var(--white); }
.steps-section .section-head p { color: rgba(255,255,255,.65); }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 2;
}
.step-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: all var(--transition);
  position: relative;
}
.step-card:hover { background: rgba(255,255,255,.1); border-color: rgba(245,185,66,.4); transform: var(--translate); }
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #1c2b3a;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 18px;
}
.step-card h3 { font-size: 18px; font-weight: 700; margin: 0 0 10px; }
.step-card p { font-size: 14px; line-height: 1.75; color: rgba(255,255,255,.65); margin: 0; }
.step-line {
  position: absolute;
  top: 55px;
  left: calc(100% - 10px);
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  z-index: 1;
}
.step-card:last-child .step-line { display: none; }

/* ===== Security Section ===== */
.security-wrap {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}
.security-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.security-media img { width: 100%; height: 100%; object-fit: cover; min-height: 360px; }
.security-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7,30,47,.5), transparent 55%);
}
.security-tips { list-style: none; padding: 0; margin: 0; }
.security-tips li {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}
.security-tips li:last-child { border-bottom: none; }
.security-tips li:hover { padding-left: 6px; }
.tip-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.tip-icon.gold { background: rgba(245,185,66,.15); color: var(--accent-dark); }
.tip-icon.green { background: rgba(46,204,154,.15); color: #23a97d; }
.security-tips h4 { font-size: 17px; font-weight: 700; margin: 0 0 6px; color: var(--text-main); }
.security-tips p { font-size: 14px; line-height: 1.7; color: var(--text-weak); margin: 0; }

/* ===== Stats Section ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.stat-card {
  text-align: center;
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
  transition: all var(--transition);
}
.stat-card:hover { transform: var(--translate); box-shadow: var(--shadow-md); border-color: rgba(13,95,166,.2); }
.stat-card .stat-num {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-card:nth-child(2) .stat-num {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-card:nth-child(3) .stat-num {
  background: linear-gradient(135deg, #2ecc9a, #23a97d);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-card:nth-child(4) .stat-num {
  background: linear-gradient(135deg, #8e6bd8, #6f4bb3);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-card .stat-label { font-size: 14px; color: var(--text-weak); margin: 8px 0 0; }
.stat-card .stat-icon { font-size: 22px; margin-bottom: 12px; color: var(--primary); }

/* ===== FAQ ===== */
.faq-wrap { max-width: 820px; margin: 0 auto; }
.faq-list { list-style: none; margin: 0; padding: 0; }
.faq-list > li {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: all var(--transition);
}
.faq-list > li:hover { box-shadow: var(--shadow-sm); border-color: rgba(13,95,166,.2); }
.faq-list > li.is-active { border-color: rgba(13,95,166,.3); box-shadow: var(--shadow-sm); }
.faq-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 22px 26px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: background var(--transition);
}
.faq-title:hover { background: var(--bg-light); }
.faq-title .faq-icon {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: all var(--transition);
}
.faq-list > li.is-active .faq-icon {
  background: var(--primary);
  color: var(--white);
  transform: rotate(180deg);
}
.faq-content {
  padding: 0 26px 24px;
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
}
.faq-content ul { padding-left: 20px; margin: 10px 0 0; }

/* ===== CTA ===== */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, var(--primary-deep), var(--primary-dark));
  border-radius: 24px;
  margin: 0 28px;
  padding: 64px 48px;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-section::before {
  content: '';
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,185,66,.28), transparent 70%);
  top: -80px;
  right: -60px;
}
.cta-section::after {
  content: '\f43c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  font-size: 140px;
  color: rgba(255,255,255,.06);
  bottom: -20px;
  right: 40px;
  pointer-events: none;
}
.cta-content { position: relative; z-index: 2; }
.cta-tag {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: block;
}
.cta-content h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin: 0 0 16px; line-height: 1.35; }
.cta-content p { font-size: 16px; color: rgba(255,255,255,.75); margin: 0; max-width: 440px; }
.cta-btns { display: flex; gap: 14px; flex-wrap: wrap; position: relative; z-index: 2; flex-shrink: 0; }
.cta-btns .btn-primary { background: var(--white); color: var(--primary-dark); box-shadow: 0 6px 20px rgba(0,0,0,.18); }
.cta-btns .btn-primary:hover { background: var(--accent); color: #1c2b3a; }
.cta-btns .btn-outline { border-color: rgba(255,255,255,.6); color: var(--white); }
.cta-btns .btn-outline:hover { background: rgba(255,255,255,.1); border-color: var(--white); }

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,.7);
  padding: 70px 0 26px;
  margin-top: 96px;
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
  background-size: 200% 100%;
  animation: gradientMove 6s linear infinite;
}
@keyframes gradientMove {
  0% { background-position: 0% 0; }
  100% { background-position: 200% 0; }
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
}
.footer-logo i { color: var(--accent); font-size: 26px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.55); margin: 0; }
.footer-col h4 {
  color: var(--white);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 12px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,.6);
  font-size: 14px;
  padding: 6px 0;
  transition: all var(--transition);
}
.footer-col a:hover { color: var(--accent); padding-left: 6px; }
.footer-col p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.55); margin: 0 0 8px; }
.footer-col p i { color: var(--accent); margin-right: 8px; width: 18px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 26px;
}
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,.4); margin: 0; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .section { padding: 76px 0; }
  .access-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .step-line { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .security-wrap { grid-template-columns: 1fr; gap: 40px; }
  .cta-section { flex-direction: column; text-align: center; padding: 48px 32px; }
  .cta-content p { margin: 0 auto; }
  .cta-btns { justify-content: center; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .site-header { top: 10px; padding: 0 10px; }
  .nav-container {
    padding: 10px 16px;
    border-radius: 40px;
    flex-wrap: wrap;
  }
  .brand { font-size: 19px; }
  .brand i { font-size: 22px; }
  .main-nav {
    display: none;
    flex-direction: column;
    width: 100%;
    background: var(--white);
    border-radius: 20px;
    padding: 14px;
    margin-top: 8px;
    box-shadow: var(--shadow-sm);
    gap: 6px;
  }
  .main-nav.open { display: flex; }
  .main-nav a {
    width: 100%;
    text-align: center;
    padding: 11px 18px;
  }
  .nav-toggle { display: inline-flex; }
  .nav-cta { display: none; }
  .page-banner { padding: 96px 0 70px; }
  .page-banner h1 { font-size: 28px; }
  .banner-stats { gap: 24px; }
  .banner-stats .stat-num { font-size: 24px; }
  .section { padding: 56px 0; }
  .section-head { margin-bottom: 40px; }
  .access-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-card { padding: 28px 14px; }
  .stat-card .stat-num { font-size: 30px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .cta-section { margin: 0 12px; padding: 40px 24px; border-radius: 18px; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .brand span { font-size: 16px; }
  .nav-container { gap: 10px; }
  .stats-grid { grid-template-columns: 1fr; }
  .banner-stats { flex-direction: column; gap: 16px; }
  .btn { padding: 12px 24px; font-size: 14px; }
  .step-card { padding: 24px 20px; }
  .faq-title { font-size: 15px; padding: 18px 20px; }
  .faq-content { padding: 0 20px 20px; }
}

/* roulang page: article */
:root {
  --primary:#081c3c;
  --primary-light:#0f2a55;
  --primary-lighter:#16366b;
  --primary-dark:#040d20;
  --accent:#f0a500;
  --accent-dark:#d18f00;
  --accent-light:#ffe08a;
  --bg:#f1f4f9;
  --bg-alt:#e7ecf4;
  --surface:#ffffff;
  --surface-alt:#f8fafd;
  --text:#1d2a44;
  --text-muted:#5e6e85;
  --text-light:#8a98ac;
  --border:#dce3ee;
  --radius:18px;
  --radius-sm:10px;
  --radius-lg:28px;
  --shadow:0 10px 36px rgba(3,12,28,.08);
  --shadow-lg:0 20px 54px rgba(3,12,28,.16);
  --transition:all .28s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
a:hover{color:var(--accent)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.container{max-width:1240px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:60px;font-weight:600;font-size:15px;border:2px solid transparent;transition:var(--transition);cursor:pointer;line-height:1.2}
.btn-primary{background:var(--accent);color:var(--primary-dark);border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:var(--primary-dark);transform:translateY(-2px);box-shadow:0 10px 26px rgba(240,165,0,.35)}
.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-outline:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff;transform:translateY(-2px)}
.btn-dark{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-dark:hover{background:var(--primary-light);border-color:var(--primary-light);transform:translateY(-2px)}

.site-header{position:fixed;top:18px;left:50%;transform:translateX(-50%);z-index:1000;width:calc(100% - 36px);max-width:1280px;background:rgba(255,255,255,.88);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-radius:60px;box-shadow:0 8px 36px rgba(3,12,28,.10);border:1px solid rgba(255,255,255,.65);transition:var(--transition)}
.nav-container{display:flex;align-items:center;justify-content:space-between;height:66px;padding:0 20px 0 28px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--primary);letter-spacing:-.3px;white-space:nowrap}
.brand i{color:var(--accent);font-size:22px;transition:var(--transition)}
.brand:hover{color:var(--primary)}
.brand:hover i{transform:rotate(-12deg) scale(1.08)}
.main-nav{display:flex;align-items:center;gap:6px;background:rgba(240,245,255,.6);padding:4px;border-radius:50px}
.main-nav a{position:relative;padding:9px 20px;border-radius:40px;font-size:15px;font-weight:600;color:var(--text);transition:var(--transition)}
.main-nav a:hover{color:var(--primary);background:rgba(255,255,255,.85)}
.main-nav a.active{background:var(--primary);color:#fff;box-shadow:0 4px 18px rgba(8,28,60,.28)}
.nav-cta{display:inline-flex;align-items:center;gap:7px;background:var(--accent);color:var(--primary-dark);padding:10px 22px;border-radius:50px;font-weight:700;font-size:14px;transition:var(--transition)}
.nav-cta:hover{background:var(--accent-dark);color:var(--primary-dark);transform:translateY(-1px);box-shadow:0 8px 22px rgba(240,165,0,.35)}
.nav-toggle{display:none;background:none;border:none;color:var(--primary);font-size:24px;cursor:pointer;padding:8px;border-radius:10px}
.nav-toggle:hover{background:rgba(8,28,60,.06)}

.article-hero{position:relative;padding:190px 0 90px;color:#fff;background:linear-gradient(145deg,rgba(3,10,26,.95) 0%,rgba(8,28,60,.88) 45%,rgba(15,42,85,.75) 100%),url('/assets/images/backpic/back-1.png') center/cover no-repeat;overflow:hidden}
.article-hero::after{content:'';position:absolute;bottom:0;left:0;right:0;height:140px;background:linear-gradient(to top,var(--bg),transparent);z-index:1}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:28px;padding:8px 18px;background:rgba(255,255,255,.08);border-radius:50px;width:fit-content;backdrop-filter:blur(6px)}
.breadcrumb a{display:flex;align-items:center;gap:6px;transition:color .25s}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.45}
.breadcrumb .current{color:var(--accent-light);opacity:1}
.article-hero-title{font-size:2.45rem;font-weight:800;line-height:1.35;margin-bottom:20px;letter-spacing:-.5px;text-shadow:0 4px 24px rgba(0,0,0,.25)}
.hero-meta{display:flex;align-items:center;flex-wrap:wrap;gap:16px;font-size:14px;color:rgba(255,255,255,.82)}
.hero-meta .meta-tag{display:inline-flex;align-items:center;gap:7px;background:var(--accent);color:var(--primary-dark);font-weight:700;padding:6px 16px;border-radius:40px;font-size:13px}
.hero-meta .meta-time{display:inline-flex;align-items:center;gap:7px}
.hero-meta .meta-views{display:inline-flex;align-items:center;gap:7px}

.article-section{padding:70px 0 40px;position:relative}
.article-section .container{position:relative;z-index:2}
.article-card{background:var(--surface);border-radius:var(--radius-lg);padding:48px 52px;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.9)}
.article-body{font-size:1.05rem;line-height:2;color:var(--text);word-break:break-word}
.article-body p{margin-bottom:1.35em}
.article-body h2{font-size:1.55rem;font-weight:800;margin:2.4em 0 1em;padding-left:14px;border-left:4px solid var(--accent);color:var(--primary)}
.article-body h3{font-size:1.3rem;font-weight:700;margin:2em 0 .9em;color:var(--primary)}
.article-body h4{font-size:1.12rem;font-weight:700;margin:1.8em 0 .7em;color:var(--primary)}
.article-body ul,.article-body ol{margin:1.2em 0 1.5em;padding-left:1.5em}
.article-body ul li{margin-bottom:.55em;position:relative}
.article-body ul li::marker{color:var(--accent)}
.article-body ol li{margin-bottom:.55em}
.article-body img{border-radius:var(--radius-sm);margin:1.8em 0;box-shadow:var(--shadow);width:100%;object-fit:cover}
.article-body blockquote{margin:1.8em 0;padding:22px 26px;background:var(--surface-alt);border-left:4px solid var(--accent);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-muted);font-style:italic}
.article-body a{color:var(--accent-dark);font-weight:600;border-bottom:1px solid transparent;transition:border-color .25s}
.article-body a:hover{border-bottom-color:var(--accent-dark)}
.article-body table{width:100%;margin:1.5em 0;border-collapse:collapse;font-size:.95rem}
.article-body th,.article-body td{padding:12px 16px;border:1px solid var(--border);text-align:left}
.article-body th{background:var(--primary);color:#fff;font-weight:600}
.article-not-found{text-align:center;padding:70px 20px}
.article-not-found i{font-size:70px;color:var(--text-light);margin-bottom:20px}
.article-not-found h2{font-size:1.8rem;color:var(--primary);margin-bottom:14px}
.article-not-found p{color:var(--text-muted);margin-bottom:28px}

.article-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:42px;padding-top:30px;border-top:1px solid var(--border)}
.article-tags .tag-label{font-weight:700;color:var(--text-muted);font-size:14px}
.article-tags .tag{display:inline-flex;align-items:center;gap:6px;padding:7px 16px;background:var(--surface-alt);border:1px solid var(--border);border-radius:40px;font-size:13px;font-weight:600;color:var(--text-muted);transition:var(--transition)}
.article-tags .tag:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.article-share{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;margin-top:26px;padding:22px 26px;background:var(--surface-alt);border-radius:var(--radius);border:1px solid var(--border)}
.article-share .share-text{font-weight:700;color:var(--text);display:flex;align-items:center;gap:10px}
.article-share .share-links{display:flex;gap:8px}
.article-share .share-btn{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:#fff;border:1px solid var(--border);color:var(--text-muted);transition:var(--transition);font-size:16px}
.article-share .share-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-3px);box-shadow:0 8px 20px rgba(8,28,60,.2)}

.article-sidebar .sidebar-card{background:var(--surface);border-radius:var(--radius);padding:28px;margin-bottom:24px;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.9)}
.sidebar-hud{background:linear-gradient(165deg,var(--primary) 0%,var(--primary-light) 100%);color:#fff;border:1px solid rgba(255,255,255,.08);position:relative;overflow:hidden}
.sidebar-hud::before{content:'';position:absolute;top:-60px;right:-40px;width:140px;height:140px;background:radial-gradient(circle,rgba(240,165,0,.18),transparent 70%);border-radius:50%}
.sidebar-hud::after{content:'';position:absolute;bottom:-40px;left:-30px;width:120px;height:120px;background:radial-gradient(circle,rgba(255,255,255,.08),transparent 70%);border-radius:50%}
.sidebar-hud .hud-title{font-size:1.1rem;font-weight:800;margin-bottom:20px;display:flex;align-items:center;gap:10px;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:14px}
.sidebar-hud .hud-title i{color:var(--accent)}
.hud-list{display:flex;flex-direction:column;gap:14px}
.hud-list .hud-item{display:flex;align-items:flex-start;gap:12px}
.hud-list .hud-item i{color:var(--accent);margin-top:4px;width:18px;text-align:center}
.hud-list .hud-item .hud-label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:rgba(255,255,255,.55);display:block;margin-bottom:2px}
.hud-list .hud-item .hud-value{font-size:14px;font-weight:600;color:#fff;line-height:1.5}
.sidebar-contact{background:linear-gradient(145deg,#fff,#faf5ff);text-align:center;position:relative;overflow:hidden}
.sidebar-contact i.contact-icon{font-size:44px;color:var(--accent);margin-bottom:14px}
.sidebar-contact h3{font-size:1.2rem;color:var(--primary);margin-bottom:8px}
.sidebar-contact p{color:var(--text-muted);font-size:14px;margin-bottom:20px}
.sidebar-contact .btn{width:100%}
.sidebar-guide{background:var(--surface)}
.sidebar-guide h3{font-size:1.05rem;font-weight:800;color:var(--primary);margin-bottom:18px;display:flex;align-items:center;gap:10px}
.sidebar-guide h3 i{color:var(--accent)}
.sidebar-guide .guide-steps{display:flex;flex-direction:column;gap:16px}
.guide-step{display:flex;gap:14px;align-items:flex-start}
.guide-step .step-num{width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;flex-shrink:0;box-shadow:0 4px 14px rgba(8,28,60,.25)}
.guide-step .step-text{font-size:14px;color:var(--text-muted);line-height:1.55}
.guide-step .step-text strong{color:var(--text);display:block;font-size:15px;margin-bottom:3px}

.related-section{padding:70px 0 50px;background:var(--bg-alt)}
.section-header{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:20px;margin-bottom:42px}
.section-header .section-title-wrap .section-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px}
.section-header .section-title-wrap .section-eyebrow::before{content:'';width:28px;height:3px;background:var(--accent);border-radius:3px}
.section-header h2{font-size:2rem;font-weight:800;color:var(--primary);line-height:1.3;letter-spacing:-.4px}
.section-header p{color:var(--text-muted);font-size:15px;max-width:560px;margin-top:8px}
.related-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.9);transition:var(--transition);display:flex;flex-direction:column;height:100%}
.related-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px)}
.related-card-image{position:relative;height:200px;overflow:hidden}
.related-card-image img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.related-card:hover .related-card-image img{transform:scale(1.06)}
.related-card-image::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(8,28,60,.5),transparent 60%);opacity:.6;transition:opacity .3s}
.related-card:hover .related-card-image::after{opacity:.85}
.related-card-image .tag{position:absolute;top:14px;left:14px;z-index:2;background:var(--accent);color:var(--primary-dark);font-size:12px;font-weight:800;padding:6px 14px;border-radius:40px}
.related-card-body{padding:28px;flex:1;display:flex;flex-direction:column;gap:10px}
.related-card-body h3{font-size:1.08rem;font-weight:700;color:var(--text);line-height:1.5;transition:color .25s}
.related-card-body h3:hover{color:var(--accent-dark)}
.related-card-body p{font-size:14px;color:var(--text-muted);line-height:1.7;flex:1}
.related-card-body .related-meta{display:flex;align-items:center;gap:14px;font-size:12px;color:var(--text-light)}
.related-card-body .related-meta i{margin-right:4px}

.cta-section{padding:100px 0;background:linear-gradient(140deg,var(--primary-dark) 0%,var(--primary) 55%,var(--primary-light) 100%);position:relative;overflow:hidden;color:#fff}
.cta-section::before{content:'';position:absolute;top:-30%;right:-10%;width:360px;height:360px;background:radial-gradient(circle,rgba(240,165,0,.2),transparent 65%);border-radius:50%}
.cta-section::after{content:'';position:absolute;bottom:-20%;left:-5%;width:280px;height:280px;background:radial-gradient(circle,rgba(255,255,255,.1),transparent 65%);border-radius:50%}
.cta-inner{text-align:center;position:relative;z-index:2}
.cta-inner h2{font-size:2.2rem;font-weight:800;margin-bottom:16px;letter-spacing:-.4px}
.cta-inner p{font-size:16px;color:rgba(255,255,255,.8);max-width:600px;margin:0 auto 32px}
.cta-buttons{display:flex;justify-content:center;flex-wrap:wrap;gap:16px}
.cta-buttons .btn{min-width:180px}

.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.75);padding:80px 0 0;position:relative}
.site-footer::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--primary-light),var(--accent));opacity:.5}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:48px;padding-bottom:48px}
.footer-brand .footer-logo{display:inline-flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:#fff;margin-bottom:18px}
.footer-brand .footer-logo i{color:var(--accent);font-size:22px}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6)}
.footer-col h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:20px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:var(--accent);border-radius:2px}
.footer-col a{display:block;padding:5px 0;font-size:14px;color:rgba(255,255,255,.6);transition:var(--transition)}
.footer-col a:hover{color:var(--accent);padding-left:8px}
.footer-col p{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.6);padding:4px 0}
.footer-col p i{color:var(--accent);width:18px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding:26px 0;border-top:1px solid rgba(255,255,255,.08);font-size:13px;color:rgba(255,255,255,.42)}
.footer-bottom p{display:flex;align-items:center;gap:8px}

@media (max-width:1024px){
  .article-hero{padding:180px 0 70px}
  .article-hero-title{font-size:2rem}
  .article-card{padding:36px 30px}
  .footer-grid{gap:32px}
  .sidebar-card{padding:22px}
}
@media (max-width:840px){
  .nav-cta{display:none}
  .main-nav{position:fixed;top:76px;left:16px;right:16px;background:#fff;border-radius:20px;box-shadow:0 16px 50px rgba(3,12,28,.18);flex-direction:column;align-items:stretch;gap:2px;padding:14px;display:none;z-index:999}
  .main-nav.open{display:flex}
  .main-nav a{padding:14px 20px;border-radius:14px;font-size:16px}
  .main-nav a:hover{background:var(--bg-alt)}
  .nav-toggle{display:block}
  .site-header{width:calc(100% - 28px)}
  .article-section{padding:50px 0 30px}
  .article-card{padding:28px 20px}
  .article-hero-title{font-size:1.75rem}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:640px){
  .article-hero{padding:160px 0 50px}
  .article-hero-title{font-size:1.45rem}
  .hero-meta{gap:12px}
  .section-header h2{font-size:1.55rem}
  .related-card-image{height:190px}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:auto}
  .footer-bottom{justify-content:center;text-align:center}
  .article-body{font-size:.98rem;line-height:1.9}
  .article-body h2{font-size:1.3rem}
  .article-share{flex-direction:column;align-items:flex-start}
  .cta-inner h2{font-size:1.6rem}
  .breadcrumb{font-size:12px}
}

/* roulang page: category2 */
:root {
  --primary: #00c6ff;
  --primary-2: #0072ff;
  --accent: #ffcc00;
  --bg-dark: #050d1a;
  --bg-dark-2: #0a1628;
  --bg-panel: rgba(18, 32, 52, 0.85);
  --bg-card: rgba(17, 30, 48, 0.78);
  --border-color: rgba(0, 198, 255, 0.18);
  --border-color-2: rgba(255, 204, 0, 0.25);
  --text-color: #eaf2ff;
  --text-muted: #8ba0ba;
  --text-dim: #5e738c;
  --radius: 18px;
  --radius-sm: 10px;
  --radius-xs: 8px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  --shadow-light: 0 6px 24px rgba(0, 198, 255, 0.12);
  --transition: all 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-dark);
  color: var(--text-color);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: #66dcff; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; outline: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 40px);
  max-width: 1160px;
  z-index: 999;
  background: rgba(6, 15, 28, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(0, 198, 255, 0.14);
  border-radius: 999px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  padding: 10px 20px;
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1160px;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 1.35rem;
  color: var(--text-color);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.brand i {
  color: var(--primary);
  font-size: 1.5rem;
  filter: drop-shadow(0 0 10px rgba(0, 198, 255, 0.5));
}
.brand:hover { color: #fff; }
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: nowrap;
}
.main-nav a {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  transition: var(--transition);
  border: 1px solid transparent;
}
.main-nav a:hover { color: #fff; background: rgba(0, 198, 255, 0.1); border-color: rgba(0, 198, 255, 0.2); }
.main-nav a.active {
  color: #050d1a;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  border-color: transparent;
  box-shadow: 0 4px 18px rgba(0, 198, 255, 0.35);
  font-weight: 700;
  color: #081018;
}
.nav-cta {
  padding: 9px 20px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #050d1a;
  background: linear-gradient(135deg, #ffcc00, #ffb800);
  box-shadow: 0 4px 18px rgba(255, 204, 0, 0.25);
  white-space: nowrap;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.nav-cta:hover { transform: translateY(-2px); color: #050d1a; box-shadow: 0 8px 24px rgba(255, 204, 0, 0.4); }
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(0, 198, 255, 0.3);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  color: var(--primary);
  font-size: 1.1rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* ===== Hero ===== */
.page-hero {
  position: relative;
  padding: 180px 0 100px;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  border-bottom: 1px solid rgba(0, 198, 255, 0.1);
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(5, 13, 26, 0.92) 30%, rgba(5, 13, 26, 0.55) 100%);
  z-index: 1;
}
.page-hero .container { position: relative; z-index: 2; }
.hero-content {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 60px;
  align-items: center;
}
.hero-copy { padding-right: 20px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 198, 255, 0.12);
  border: 1px solid rgba(0, 198, 255, 0.25);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  letter-spacing: 1px;
  margin-bottom: 22px;
  text-transform: uppercase;
}
.hero-copy h1 {
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.hero-copy h1 span { color: var(--primary); }
.hero-copy p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 30px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 30px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #081018;
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  box-shadow: 0 6px 24px rgba(0, 198, 255, 0.3);
  transition: var(--transition);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 32px rgba(0, 198, 255, 0.45); color: #081018; }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 30px;
  border-radius: 999px;
  background: transparent;
  color: var(--text-color);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid rgba(0, 198, 255, 0.35);
  cursor: pointer;
  transition: var(--transition);
}
.btn-ghost:hover { background: rgba(0, 198, 255, 0.08); color: var(--primary); transform: translateY(-2px); }

/* HUD Panel */
.hud-panel {
  background: rgba(10, 22, 38, 0.9);
  border: 1px solid rgba(0, 198, 255, 0.2);
  border-radius: var(--radius);
  padding: 24px 22px;
  box-shadow: 0 0 40px rgba(0, 198, 255, 0.07), inset 0 0 30px rgba(0, 198, 255, 0.03);
  backdrop-filter: blur(12px);
}
.hud-panel h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-size: 0.8rem;
}
.hud-panel h3 i { color: var(--primary); }
.hud-list { display: flex; flex-direction: column; gap: 12px; }
.hud-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: rgba(0, 198, 255, 0.05);
  border: 1px solid rgba(0, 198, 255, 0.08);
  border-radius: var(--radius-sm);
}
.hud-item span { color: var(--text-muted); font-size: 0.85rem; }
.hud-item strong { color: var(--text-color); font-weight: 700; font-size: 0.95rem; }
.hud-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(0, 255, 170, 0.12);
  color: #00e89f;
  border: 1px solid rgba(0, 255, 170, 0.2);
}

/* ===== Section common ===== */
.section-pad { padding: 90px 0; position: relative; }
.section-header { text-align: center; max-width: 640px; margin: 0 auto 50px; }
.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
  background: rgba(0, 198, 255, 0.1);
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid rgba(0, 198, 255, 0.2);
}
.section-header h2 {
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 12px;
  line-height: 1.3;
}
.section-header h2 span { color: var(--primary); }
.section-header p { color: var(--text-muted); font-size: 1rem; }

/* ===== Path Section ===== */
.path-section { background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-dark-2) 100%); }
.path-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.path-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid rgba(0, 198, 255, 0.12);
  border-radius: var(--radius);
  padding: 32px 26px 26px;
  transition: var(--transition);
  overflow: hidden;
}
.path-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
  opacity: 0.6;
}
.path-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(0, 198, 255, 0.25); }
.path-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 198, 255, 0.2), rgba(0, 114, 255, 0.2));
  color: var(--primary);
  font-size: 1.2rem;
  font-weight: 900;
  margin-bottom: 20px;
  border: 1px solid rgba(0, 198, 255, 0.2);
}
.path-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.path-card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; }

/* ===== Cards Section ===== */
.cards-section { background: var(--bg-dark); }
.content-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.info-card {
  background: var(--bg-card);
  border: 1px solid rgba(0, 198, 255, 0.1);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.info-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(0, 198, 255, 0.3); }
.info-card .card-media {
  height: 180px;
  overflow: hidden;
  position: relative;
}
.info-card .card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.info-card:hover .card-media img { transform: scale(1.05); }
.card-body { padding: 22px 22px 26px; display: flex; flex-direction: column; flex: 1; }
.card-badge {
  display: inline-flex;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(255, 204, 0, 0.1);
  border: 1px solid rgba(255, 204, 0, 0.2);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.info-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; line-height: 1.5; }
.info-card p { font-size: 0.85rem; color: var(--text-muted); flex: 1; line-height: 1.7; }
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
}
.card-link i { transition: transform 0.3s ease; }
.card-link:hover i { transform: translateX(4px); }

/* ===== Stats Section ===== */
.stats-section {
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  position: relative;
}
.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(5, 13, 26, 0.94), rgba(10, 22, 38, 0.88));
  z-index: 1;
}
.stats-section .container { position: relative; z-index: 2; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item {
  padding: 32px 20px;
  background: rgba(10, 22, 38, 0.7);
  border: 1px solid rgba(0, 198, 255, 0.12);
  border-radius: var(--radius);
  transition: var(--transition);
}
.stat-item:hover { border-color: rgba(0, 198, 255, 0.3); transform: translateY(-4px); box-shadow: var(--shadow-light); }
.stat-item i { font-size: 2rem; color: var(--primary); margin-bottom: 14px; }
.stat-num { font-size: 2.2rem; font-weight: 900; color: #fff; line-height: 1.2; margin-bottom: 4px; }
.stat-num span { color: var(--primary); }
.stat-label { font-size: 0.85rem; color: var(--text-muted); }

/* ===== Compare Section ===== */
.compare-section { background: var(--bg-dark-2); }
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.compare-card {
  background: var(--bg-card);
  border: 1px solid rgba(0, 198, 255, 0.12);
  border-radius: var(--radius);
  padding: 34px 30px;
  transition: var(--transition);
  position: relative;
}
.compare-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); border-color: rgba(0, 198, 255, 0.25); }
.compare-card .tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--primary);
  background: rgba(0, 198, 255, 0.1);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
  border: 1px solid rgba(0, 198, 255, 0.2);
}
.compare-card h3 { font-size: 1.2rem; font-weight: 800; margin-bottom: 16px; }
.compare-card ul { display: flex; flex-direction: column; gap: 12px; }
.compare-card ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}
.compare-card ul li i { color: var(--primary); margin-top: 4px; }
.compare-card:nth-child(2) { border-color: rgba(255, 204, 0, 0.2); }
.compare-card:nth-child(2) .tag { color: var(--accent); background: rgba(255, 204, 0, 0.1); border-color: rgba(255, 204, 0, 0.2); }
.compare-card:nth-child(2) ul li i { color: var(--accent); }

/* ===== Tips ===== */
.tips-section { background: var(--bg-dark); }
.tips-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.tip-card {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 24px 26px;
  background: var(--bg-card);
  border: 1px solid rgba(0, 198, 255, 0.08);
  border-radius: var(--radius);
  transition: var(--transition);
}
.tip-card:hover { border-color: rgba(0, 198, 255, 0.22); box-shadow: var(--shadow-light); transform: translateY(-3px); }
.tip-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  flex-shrink: 0;
  background: linear-gradient(135deg, rgba(0, 198, 255, 0.15), rgba(0, 114, 255, 0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(0, 198, 255, 0.2);
  color: var(--primary);
  font-size: 1.1rem;
}
.tip-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; }
.tip-card p { font-size: 0.86rem; color: var(--text-muted); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-section { background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-dark-2) 100%); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid rgba(0, 198, 255, 0.1);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(0, 198, 255, 0.25); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  cursor: pointer;
  padding: 20px 24px;
  font-weight: 600;
  font-size: 0.98rem;
  list-style: none;
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i {
  color: var(--primary);
  font-size: 0.85rem;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item[open] summary i { transform: rotate(180deg); }
.faq-item[open] { border-color: rgba(0, 198, 255, 0.3); }
.faq-answer { padding: 0 24px 22px; color: var(--text-muted); font-size: 0.9rem; line-height: 1.8; }

/* ===== CTA ===== */
.cta-section { padding: 80px 0; position: relative; }
.cta-box {
  background: linear-gradient(135deg, rgba(0, 198, 255, 0.12), rgba(0, 114, 255, 0.08));
  border: 1px solid rgba(0, 198, 255, 0.22);
  border-radius: calc(var(--radius) * 1.4);
  padding: 60px 50px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 198, 255, 0.15), transparent 70%);
  pointer-events: none;
}
.cta-box h2 { font-size: 2rem; font-weight: 900; margin-bottom: 14px; }
.cta-box h2 span { color: var(--primary); }
.cta-box p { color: var(--text-muted); font-size: 1rem; margin-bottom: 30px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Mini CTA ===== */
.mini-cta { margin-top: 30px; }
.mini-cta .btn-primary { background: linear-gradient(135deg, #ffcc00, #ffb800); color: #081018; box-shadow: 0 6px 24px rgba(255, 204, 0, 0.25); }
.mini-cta .btn-primary:hover { box-shadow: 0 10px 32px rgba(255, 204, 0, 0.4); }

/* ===== Footer ===== */
.site-footer {
  background: #03080f;
  border-top: 1px solid rgba(0, 198, 255, 0.1);
  padding: 60px 0 0;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(0, 198, 255, 0.08);
}
.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--text-color);
  margin-bottom: 14px;
}
.footer-logo i { color: var(--primary); font-size: 1.3rem; }
.footer-brand p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.8; max-width: 300px; }
.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #d6e3f5;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.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;
  color: var(--text-muted);
  font-size: 0.88rem;
  padding: 6px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--primary); padding-left: 6px; }
.footer-col p { color: var(--text-muted); font-size: 0.88rem; padding: 6px 0; display: flex; align-items: center; gap: 10px; }
.footer-col p i { color: var(--primary); width: 18px; text-align: center; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 0 24px;
}
.footer-bottom p { color: var(--text-dim); font-size: 0.8rem; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-copy { padding-right: 0; }
  .hud-panel { max-width: 420px; }
  .path-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .content-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .compare-grid { grid-template-columns: 1fr; }
  .tips-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 768px) {
  .site-header { top: 10px; width: calc(100% - 24px); border-radius: 20px; padding: 10px 16px; }
  .nav-container { flex-wrap: wrap; }
  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding-top: 12px;
    border-top: 1px solid rgba(0, 198, 255, 0.1);
    margin-top: 8px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { text-align: center; padding: 12px 16px; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .page-hero { padding: 150px 0 70px; }
  .hero-copy h1 { font-size: 2rem; }
  .hero-copy p { font-size: 1rem; }
  .section-pad { padding: 60px 0; }
  .section-header h2 { font-size: 1.6rem; }
  .path-grid { grid-template-columns: 1fr; }
  .content-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .cta-box { padding: 40px 24px; }
  .cta-box h2 { font-size: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 520px) {
  .hero-copy h1 { font-size: 1.6rem; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .brand span { font-size: 1rem; }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}