/* roulang page: index */
:root {
  --primary: #6366f1;
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  --accent: #fbbf24;
  --accent-rgb: 251,191,36;
  --bg-void: #070b14;
  --bg-deep: #0c1222;
  --bg-card: #131c30;
  --bg-card-hover: #1a2640;
  --border: rgba(148,163,184,.12);
  --border-hover: rgba(99,102,241,.45);
  --text-1: #f1f5f9;
  --text-2: #a7b4c9;
  --text-3: #68738a;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 4px 12px rgba(0,0,0,.25);
  --shadow-md: 0 12px 32px rgba(0,0,0,.35);
  --shadow-lg: 0 24px 60px rgba(0,0,0,.45);
  --transition: all .25s cubic-bezier(.4,0,.2,1);
  --font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-1);
  background: var(--bg-void);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-light); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; background: none; color: inherit; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.grid-container { max-width: 1200px; }
.section {
  padding: 88px 0;
  position: relative;
}
.section-header {
  text-align: center;
  margin-bottom: 52px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(var(--accent-rgb), .1);
  border: 1px solid rgba(var(--accent-rgb), .25);
  border-radius: 999px;
  padding: 6px 18px;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.5px;
  color: var(--text-1);
  margin-bottom: 12px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-2);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(7,11,20,.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(7,11,20,.95);
  box-shadow: 0 8px 30px rgba(0,0,0,.4);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 24px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  color: #fff;
  box-shadow: 0 4px 18px rgba(99,102,241,.4);
}
.brand-text {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-1);
  letter-spacing: -.3px;
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  transition: var(--transition);
}
.nav-link:hover {
  color: var(--text-1);
  background: rgba(255,255,255,.06);
}
.nav-link.active {
  color: #fff;
  background: rgba(99,102,241,.2);
  border: 1px solid rgba(99,102,241,.3);
}
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  padding: 11px 24px;
  border-radius: 999px;
  box-shadow: 0 4px 18px rgba(99,102,241,.35);
  transition: var(--transition);
  margin-left: 12px;
  white-space: nowrap;
}
.header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99,102,241,.5);
  color: #fff;
}
.mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-1);
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}
.mobile-toggle:hover {
  background: rgba(255,255,255,.12);
}
.mobile-menu {
  display: none;
  background: rgba(7,11,20,.98);
  border-top: 1px solid var(--border);
  padding: 16px 24px 24px;
  animation: fadeInDown .25s ease;
}
.mobile-menu.open {
  display: block;
}
.mobile-menu ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu .nav-link {
  padding: 14px 16px;
  font-size: 16px;
  border-radius: 12px;
  display: flex;
  align-items: center;
}
.mobile-menu .mobile-cta {
  margin-top: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 700;
  padding: 14px;
  border-radius: 12px;
  font-size: 15px;
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 720px;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 140px 0 100px;
  background: url('/assets/images/backpic/back-1.png') no-repeat center center / cover;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(7,11,20,.92) 0%, rgba(7,11,20,.78) 45%, rgba(17,24,60,.55) 100%);
  z-index: -1;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 180px;
  background: linear-gradient(to top, var(--bg-void), transparent);
  z-index: -1;
}
.hero-content {
  max-width: 720px;
  animation: heroIn .8s ease both;
}
@keyframes heroIn {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 999px;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-1);
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}
.hero-badge i {
  color: var(--accent);
}
.hero-title {
  font-size: clamp(36px, 5vw, 58px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1.5px;
  color: #fff;
  margin-bottom: 20px;
  text-shadow: 0 4px 20px rgba(0,0,0,.3);
}
.hero-title span {
  background: linear-gradient(135deg, var(--accent), #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(241,245,249,.85);
  max-width: 560px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  padding: 15px 34px;
  border-radius: 999px;
  box-shadow: 0 6px 24px rgba(99,102,241,.4);
  transition: var(--transition);
  border: none;
  cursor: pointer;
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(99,102,241,.5);
  color: #fff;
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.2);
  color: rgba(241,245,249,.9);
  font-size: 16px;
  font-weight: 600;
  padding: 15px 34px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
  transition: var(--transition);
  cursor: pointer;
}
.btn-ghost:hover {
  background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.4);
  transform: translateY(-3px);
  color: #fff;
}
.hero-metrics {
  display: flex;
  gap: 36px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.hero-metric {
  display: flex;
  flex-direction: column;
}
.hero-metric strong {
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.hero-metric span {
  font-size: 13px;
  color: rgba(148,163,184,.8);
  margin-top: 4px;
}

/* ===== Stats Strip ===== */
.stats-strip {
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 18px 12px;
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.stat-item:hover {
  background: rgba(255,255,255,.03);
}
.stat-item i {
  font-size: 24px;
  color: var(--primary-light);
  margin-bottom: 8px;
}
.stat-item .stat-num {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-1);
  line-height: 1.2;
}
.stat-item .stat-label {
  font-size: 13px;
  color: var(--text-3);
  margin-top: 4px;
}

/* ===== Categories ===== */
.categories-section {
  background: var(--bg-void);
}
.cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.cat-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 280px;
  display: flex;
  align-items: flex-end;
  border: 1px solid var(--border);
  transition: var(--transition);
  isolation: isolate;
}
.cat-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7,11,20,.95) 0%, rgba(7,11,20,.45) 55%, rgba(7,11,20,.1) 100%);
  z-index: 1;
}
.cat-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg);
}
.cat-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  transition: transform .5s ease;
}
.cat-card:hover img {
  transform: scale(1.05);
}
.cat-card-body {
  position: relative;
  z-index: 2;
  padding: 28px;
  width: 100%;
}
.cat-card-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(var(--accent-rgb), .15);
  border: 1px solid rgba(var(--accent-rgb), .25);
  border-radius: 999px;
  padding: 4px 14px;
  margin-bottom: 12px;
}
.cat-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.cat-card p {
  font-size: 14px;
  color: rgba(241,245,249,.75);
  line-height: 1.6;
  margin-bottom: 16px;
}
.cat-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-light);
  transition: var(--transition);
}
.cat-card-link:hover {
  color: var(--accent);
  gap: 12px;
}

/* ===== Features ===== */
.features-section {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition);
}
.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.feature-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: rgba(99,102,241,.15);
  border: 1px solid rgba(99,102,241,.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary-light);
  margin-bottom: 18px;
}
.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.65;
}

/* ===== News ===== */
.news-section {
  background: var(--bg-void);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.news-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.news-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.news-category {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-light);
  background: rgba(99,102,241,.12);
  border: 1px solid rgba(99,102,241,.2);
  border-radius: 999px;
  padding: 3px 12px;
}
.news-date {
  font-size: 13px;
  color: var(--text-3);
}
.news-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
}
.news-title a {
  color: var(--text-1);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-title a:hover {
  color: var(--primary-light);
}
.news-excerpt {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.6;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}
.news-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-light);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.news-more:hover {
  color: var(--accent);
  gap: 10px;
}
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-2);
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  font-size: 15px;
}

/* ===== Steps ===== */
.steps-section {
  background: url('/assets/images/backpic/back-3.png') no-repeat center center / cover;
  position: relative;
  isolation: isolate;
}
.steps-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(7,11,20,.92);
  z-index: -1;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  counter-reset: step;
}
.step-item {
  text-align: center;
  position: relative;
}
.step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 0 0 6px rgba(99,102,241,.15), 0 8px 20px rgba(99,102,241,.3);
}
.step-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 8px;
}
.step-item p {
  font-size: 13px;
  color: var(--text-2);
  max-width: 220px;
  margin: 0 auto;
  line-height: 1.6;
}
.step-arrow {
  position: absolute;
  top: 28px;
  right: -18px;
  color: rgba(255,255,255,.15);
  font-size: 14px;
  z-index: 2;
}

/* ===== Recommend ===== */
.recommend-section {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
}
.recommend-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.recommend-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
  isolation: isolate;
}
.recommend-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.recommend-card:hover img {
  transform: scale(1.06);
}
.recommend-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7,11,20,.85) 0%, transparent 60%);
  z-index: 1;
  opacity: .8;
  transition: var(--transition);
}
.recommend-card:hover::after {
  opacity: 1;
}
.recommend-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 18px;
}
.recommend-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 3;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(7,11,20,.75);
  border: 1px solid rgba(var(--accent-rgb), .3);
  border-radius: 999px;
  padding: 4px 12px;
  backdrop-filter: blur(6px);
}
.play-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,.2);
  border: 1px solid rgba(255,255,255,.4);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  margin-bottom: 10px;
  opacity: 0;
  transform: translateY(8px);
  transition: var(--transition);
}
.recommend-card:hover .play-btn {
  opacity: 1;
  transform: translateY(0);
}
.recommend-overlay p {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-void);
}
.accordion {
  max-width: 800px;
  margin: 0 auto;
}
.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-md) !important;
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.accordion-item:hover {
  border-color: var(--border-hover) !important;
}
.accordion-title {
  font-size: 16px !important;
  font-weight: 600 !important;
  color: var(--text-1) !important;
  background: transparent !important;
  padding: 20px 46px 20px 22px !important;
  line-height: 1.5 !important;
  border-bottom: 1px solid transparent !important;
  position: relative;
  transition: var(--transition);
}
.accordion-title::before,
.accordion-title::after {
  content: "" !important;
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 2px;
  background: var(--primary-light);
  border-radius: 2px;
  transition: var(--transition);
}
.accordion-title::after {
  transform: translateY(-50%) rotate(90deg);
}
.accordion-title:hover {
  color: var(--primary-light) !important;
}
.accordion-item.is-active .accordion-title {
  color: var(--primary-light) !important;
  background: rgba(99,102,241,.05) !important;
}
.accordion-item.is-active .accordion-title::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}
.accordion-content {
  color: var(--text-2) !important;
  background: transparent !important;
  padding: 4px 22px 20px !important;
  font-size: 14px;
  line-height: 1.7;
}

/* ===== CTA ===== */
.cta-section {
  background: url('/assets/images/backpic/back-2.png') no-repeat center center / cover;
  position: relative;
  isolation: isolate;
  padding: 90px 0;
  text-align: center;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(7,11,20,.94) 0%, rgba(7,11,20,.75) 100%);
  z-index: -1;
}
.cta-content {
  max-width: 620px;
  margin: 0 auto;
}
.cta-content h2 {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 16px;
}
.cta-content p {
  font-size: 16px;
  color: rgba(241,245,249,.8);
  margin-bottom: 28px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-void);
  border-top: 1px solid var(--border);
  padding: 52px 0 30px;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.footer-brand {
  max-width: 360px;
}
.footer-brand .brand-logo {
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-3);
  line-height: 1.7;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 14px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-col ul li a {
  font-size: 14px;
  color: var(--text-2);
  transition: var(--transition);
}
.footer-col ul li a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-3);
}
.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  font-size: 13px;
  color: var(--text-3);
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--primary-light);
}

/* ===== Responsive ===== */
@media screen and (max-width: 1024px) {
  .section { padding: 68px 0; }
  .features-grid,
  .recommend-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
  .step-arrow { display: none; }
  .cat-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media screen and (max-width: 768px) {
  .section { padding: 56px 0; }
  .header-inner { height: 64px; padding: 0 16px; }
  .main-nav { display: none; }
  .header-cta { display: none; }
  .mobile-toggle { display: flex; }
  .brand-text { font-size: 16px; }
  .hero { min-height: 600px; padding: 110px 0 70px; }
  .hero-title { font-size: 32px; }
  .hero-actions .btn-primary,
  .hero-actions .btn-ghost { width: 100%; justify-content: center; }
  .hero-metrics { gap: 24px; }
  .cat-grid,
  .features-grid,
  .news-grid,
  .recommend-grid,
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .section-title { font-size: 26px; }
  .footer-grid { flex-direction: column; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media screen and (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr; }
  .hero { min-height: 540px; }
  .hero-title { font-size: 27px; }
  .hero-desc { font-size: 15px; }
  .btn-primary,
  .btn-ghost { padding: 14px 24px; font-size: 15px; }
  .section-tag { font-size: 12px; }
  .cta-actions .btn-primary,
  .cta-actions .btn-ghost { width: 100%; justify-content: center; }
}

/* roulang page: category1 */
:root {
      --primary: #6c63ff;
      --primary-light: #8b83ff;
      --primary-dark: #4c46c9;
      --accent: #f5b942;
      --accent-deep: #ff8c42;
      --bg-body: #0b0e14;
      --bg-section: #11151e;
      --bg-card: #181d29;
      --bg-card-hover: #1e2432;
      --text-main: #e8ecf3;
      --text-muted: #8892a6;
      --border: rgba(255, 255, 255, 0.08);
      --border-light: rgba(255, 255, 255, 0.14);
      --radius: 16px;
      --radius-sm: 10px;
      --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
      --shadow-hover: 0 14px 44px rgba(0, 0, 0, 0.55);
      --transition: all 0.3s ease;
    }

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

    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-body);
      color: var(--text-main);
      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;
      margin: 0;
      padding: 0;
    }

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

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

    ::selection {
      background: var(--primary);
      color: #fff;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .container.narrow {
      max-width: 880px;
    }

    /* ===== Header & Nav ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(11, 14, 20, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
      gap: 20px;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-size: 1.15rem;
      font-weight: 800;
      letter-spacing: 0.3px;
      color: var(--text-main);
      white-space: nowrap;
    }

    .brand-icon {
      width: 40px;
      height: 40px;
      flex-shrink: 0;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1rem;
      box-shadow: 0 4px 14px rgba(108, 99, 255, 0.35);
    }

    .main-nav .nav-list {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 18px;
      border-radius: 10px;
      color: var(--text-muted);
      font-weight: 500;
      font-size: 0.95rem;
      transition: var(--transition);
    }

    .nav-link i {
      font-size: 0.85rem;
      opacity: 0.85;
    }

    .nav-link:hover {
      color: var(--text-main);
      background: rgba(108, 99, 255, 0.1);
      transform: translateY(-1px);
    }

    .nav-link.active {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      box-shadow: 0 4px 16px rgba(108, 99, 255, 0.4);
    }

    .btn-cta {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 22px;
      background: linear-gradient(135deg, var(--accent), var(--accent-deep));
      border-radius: 10px;
      font-weight: 700;
      font-size: 0.92rem;
      color: #0b0e14;
      box-shadow: 0 4px 14px rgba(245, 185, 66, 0.25);
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(245, 185, 66, 0.4);
      color: #0b0e14;
    }

    .menu-toggle {
      display: none;
      font-size: 1.4rem;
      color: var(--text-main);
      width: 44px;
      height: 44px;
      border-radius: 10px;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--border);
    }

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 28px;
      border-radius: 12px;
      font-weight: 600;
      font-size: 0.98rem;
      border: none;
      transition: var(--transition);
      line-height: 1.4;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #fff;
      box-shadow: 0 4px 18px rgba(108, 99, 255, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 26px rgba(108, 99, 255, 0.5);
      color: #fff;
    }

    .btn-ghost {
      background: rgba(255, 255, 255, 0.06);
      color: var(--text-main);
      border: 1px solid var(--border-light);
    }

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

    .btn-lg {
      padding: 14px 36px;
      font-size: 1.05rem;
    }

    /* ===== Hero ===== */
    .page-hero {
      position: relative;
      padding: 110px 0 100px;
      overflow: hidden;
      background: var(--bg-body);
    }

    .hero-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
    }

    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(115deg, rgba(11, 14, 20, 0.96) 30%, rgba(11, 14, 20, 0.72) 60%, rgba(108, 99, 255, 0.28) 100%);
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 660px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border: 1px solid rgba(255, 255, 255, 0.18);
      border-radius: 30px;
      background: rgba(255, 255, 255, 0.06);
      font-size: 0.84rem;
      font-weight: 600;
      color: var(--accent);
      margin-bottom: 22px;
    }

    .page-hero h1 {
      font-size: clamp(1.9rem, 5vw, 3.1rem);
      line-height: 1.25;
      font-weight: 800;
      margin: 0 0 20px;
      letter-spacing: -0.5px;
    }

    .hero-sub {
      font-size: 1.12rem;
      color: var(--text-muted);
      max-width: 540px;
      margin-bottom: 34px;
    }

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

    /* ===== Section ===== */
    .section {
      padding: 90px 0;
    }

    .section + .section {
      border-top: 1px solid var(--border);
    }

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

    .section-head h2 {
      font-size: clamp(1.8rem, 3.5vw, 2.5rem);
      font-weight: 800;
      line-height: 1.3;
      margin: 0 0 14px;
    }

    .section-head p {
      color: var(--text-muted);
      font-size: 1.05rem;
    }

    /* ===== Cards ===== */
    .cards-grid {
      margin-top: 20px;
    }

    .card-method {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

    .card-method:hover {
      transform: translateY(-6px);
      border-color: var(--primary);
      box-shadow: var(--shadow-hover);
      background: var(--bg-card-hover);
    }

    .card-img {
      overflow: hidden;
      aspect-ratio: 16 / 9;
      position: relative;
    }

    .card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.55s ease;
    }

    .card-method:hover .card-img img {
      transform: scale(1.06);
    }

    .card-img::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(11, 14, 20, 0.35), transparent 60%);
      opacity: 0;
      transition: opacity 0.4s ease;
    }

    .card-method:hover .card-img::after {
      opacity: 1;
    }

    .card-body {
      padding: 26px 24px 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: flex-start;
    }

    .badge {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 6px;
      background: rgba(108, 99, 255, 0.16);
      color: var(--primary-light);
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.3px;
      margin-bottom: 14px;
    }

    .card-body h3 {
      font-size: 1.22rem;
      font-weight: 700;
      margin: 0 0 10px;
      line-height: 1.4;
    }

    .card-body p {
      color: var(--text-muted);
      font-size: 0.93rem;
      margin: 0 0 20px;
      flex: 1;
    }

    .card-link {
      color: var(--accent);
      font-weight: 600;
      font-size: 0.92rem;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: var(--transition);
    }

    .card-link:hover {
      gap: 10px;
      color: #fff;
    }

    /* ===== Steps ===== */
    .steps-section {
      background: var(--bg-section);
    }

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

    .step-item {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 34px 26px;
      position: relative;
      transition: var(--transition);
      overflow: hidden;
    }

    .step-item::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.4s ease;
    }

    .step-item:hover::before {
      transform: scaleX(1);
    }

    .step-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow);
      border-color: rgba(108, 99, 255, 0.4);
    }

    .step-num {
      font-size: 2.4rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      line-height: 1;
    }

    .step-item h3 {
      font-size: 1.12rem;
      font-weight: 700;
      margin: 16px 0 10px;
    }

    .step-item p {
      color: var(--text-muted);
      font-size: 0.9rem;
      margin: 0;
      line-height: 1.65;
    }

    /* ===== Troubleshoot ===== */
    .troubleshoot-list {
      max-width: 920px;
      margin: 0 auto;
      display: grid;
      gap: 18px;
    }

    .trouble-item {
      display: flex;
      align-items: center;
      gap: 18px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 24px 28px;
      transition: var(--transition);
    }

    .trouble-item:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow);
      transform: translateX(6px);
      background: var(--bg-card-hover);
    }

    .trouble-item > i {
      font-size: 1.4rem;
      color: var(--primary-light);
      width: 52px;
      height: 52px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(108, 99, 255, 0.12);
      border-radius: 14px;
      flex-shrink: 0;
    }

    .trouble-item h3 {
      font-size: 1.05rem;
      font-weight: 700;
      margin: 0 0 6px;
    }

    .trouble-item p {
      margin: 0;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.6;
    }

    .tag {
      margin-left: auto;
      padding: 5px 14px;
      background: rgba(245, 185, 66, 0.14);
      color: var(--accent);
      border-radius: 20px;
      font-size: 0.78rem;
      font-weight: 600;
      white-space: nowrap;
      flex-shrink: 0;
    }

    /* ===== Stats ===== */
    .stats-section {
      position: relative;
      background: url('/assets/images/backpic/back-3.png') center / cover fixed no-repeat;
      border-top: 1px solid var(--border);
    }

    .stats-section::before {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(11, 14, 20, 0.88);
    }

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

    .stat-card {
      text-align: center;
      padding: 38px 20px;
      background: rgba(24, 29, 41, 0.85);
      backdrop-filter: blur(8px);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      transition: var(--transition);
    }

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

    .stat-num {
      display: block;
      font-size: 2.4rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--primary-light), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      line-height: 1.2;
    }

    .stat-label {
      color: var(--text-muted);
      margin-top: 10px;
      display: inline-block;
      font-size: 0.9rem;
      font-weight: 500;
    }

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

    .accordion {
      background: transparent;
    }

    .accordion-item {
      background: var(--bg-card) !important;
      border: 1px solid var(--border) !important;
      border-radius: var(--radius-sm) !important;
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }

    .accordion-item:hover {
      border-color: rgba(108, 99, 255, 0.4) !important;
    }

    .accordion-title {
      background: transparent !important;
      border: none !important;
      color: var(--text-main) !important;
      padding: 20px 24px;
      font-size: 1rem;
      font-weight: 600;
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: relative;
      transition: var(--transition);
    }

    .accordion-title:hover,
    .accordion-title:focus {
      background: rgba(108, 99, 255, 0.08) !important;
    }

    .accordion-title::after {
      display: none;
    }

    .accordion-title::before {
      content: '\f078';
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      color: var(--accent);
      order: 2;
      transition: transform 0.3s ease;
    }

    .accordion-item.is-active > .accordion-title::before {
      transform: rotate(180deg);
    }

    .accordion-item.is-active > .accordion-title {
      color: var(--primary-light) !important;
    }

    .accordion-content {
      background: transparent !important;
      border: none !important;
      color: var(--text-muted);
      padding: 0 24px 22px !important;
      font-size: 0.95rem;
      line-height: 1.75;
    }

    /* ===== CTA ===== */
    .cta-banner {
      position: relative;
      border-radius: 24px;
      overflow: hidden;
      padding: 90px 40px;
      text-align: center;
      background-size: cover;
      background-position: center;
    }

    .cta-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(76, 70, 201, 0.92), rgba(245, 185, 66, 0.75));
    }

    .cta-content {
      position: relative;
      z-index: 2;
    }

    .cta-content h2 {
      font-size: clamp(1.8rem, 3.2vw, 2.5rem);
      font-weight: 800;
      margin: 0 0 14px;
      color: #fff;
    }

    .cta-content p {
      color: rgba(255, 255, 255, 0.92);
      margin-bottom: 30px;
      font-size: 1.08rem;
      max-width: 520px;
      margin-left: auto;
      margin-right: auto;
    }

    .cta-content .btn-primary {
      background: #fff;
      color: var(--primary-dark);
      box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
    }

    .cta-content .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
      color: var(--primary-dark);
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #07090f;
      border-top: 1px solid var(--border);
      padding: 70px 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 44px;
      padding-bottom: 54px;
    }

    .footer-brand .brand-logo {
      font-size: 1.1rem;
    }

    .footer-brand p {
      color: var(--text-muted);
      font-size: 0.94rem;
      margin-top: 18px;
      max-width: 380px;
      line-height: 1.8;
    }

    .footer-col h4 {
      color: var(--text-main);
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

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

    .footer-col a {
      color: var(--text-muted);
      font-size: 0.92rem;
      transition: var(--transition);
    }

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

    .footer-bottom {
      border-top: 1px solid var(--border);
      padding: 24px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      color: var(--text-muted);
      font-size: 0.85rem;
    }

    .footer-links {
      display: flex;
      gap: 18px;
    }

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

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

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .section {
        padding: 64px 0;
      }
      .header-inner {
        height: 66px;
      }
      .main-nav .nav-list {
        position: absolute;
        top: 66px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--bg-body);
        border-bottom: 1px solid var(--border);
        padding: 18px;
        display: none;
        gap: 8px;
      }
      .main-nav .nav-list.open {
        display: flex;
      }
      .nav-link {
        width: 100%;
        justify-content: flex-start;
        padding: 12px 16px;
      }
      .btn-cta {
        display: none;
      }
      .menu-toggle {
        display: inline-flex;
      }
      .page-hero {
        padding: 80px 0 70px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 34px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .footer-links {
        justify-content: center;
      }
      .trouble-item {
        flex-wrap: wrap;
        gap: 14px;
      }
      .tag {
        margin-left: 0;
      }
      .cta-banner {
        padding: 60px 24px;
        border-radius: 18px;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding: 0 18px;
      }
      .brand-text {
        font-size: 0.92rem;
      }
      .brand-logo {
        font-size: 0.95rem;
      }
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }
      .hero-actions .btn {
        justify-content: center;
      }
      .btn {
        padding: 11px 22px;
      }
      .cta-banner {
        padding: 48px 18px;
      }
    }

/* roulang page: article */
:root {
      --c-primary: #ffb800;
      --c-primary-light: #ffc94a;
      --c-accent: #00e0b2;
      --c-bg: #0b0d14;
      --c-surface: #151a2a;
      --c-surface-2: #1d2335;
      --c-text: #f5f7fb;
      --c-muted: #9aa4bd;
      --c-border: rgba(255, 255, 255, .08);
      --c-success: #22c55e;
      --radius: 18px;
      --radius-sm: 12px;
      --shadow-lg: 0 24px 48px rgba(0, 0, 0, .35);
      --shadow-md: 0 12px 28px rgba(0, 0, 0, .22);
      --container: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      background: var(--c-bg);
      color: var(--c-text);
      font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

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

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

    button,
    input,
    select,
    textarea {
      font: inherit;
    }

    .skip-link {
      position: fixed;
      left: 16px;
      top: -80px;
      z-index: 999;
      background: var(--c-primary);
      color: #0b0d14;
      padding: 10px 20px;
      border-radius: 999px;
      font-weight: 700;
      transition: top .25s ease;
    }

    .skip-link:focus {
      top: 16px;
      color: #0b0d14;
    }

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

    .section {
      padding: 84px 0;
    }

    .section-head {
      max-width: 760px;
      margin: 0 auto 52px;
      text-align: center;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--c-primary);
      background: rgba(255, 184, 0, .1);
      border: 1px solid rgba(255, 184, 0, .24);
      padding: 6px 16px;
      border-radius: 999px;
      font-size: .85rem;
      font-weight: 700;
      letter-spacing: .04em;
      text-transform: uppercase;
    }

    .section-head h2 {
      font-size: clamp(1.8rem, 3vw, 2.7rem);
      line-height: 1.25;
      margin: 16px 0 14px;
      color: #fff;
      font-weight: 800;
    }

    .section-head p {
      color: var(--c-muted);
      font-size: 1.06rem;
      margin: 0;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 60;
      background: rgba(11, 13, 20, .82);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--c-border);
    }

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

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-size: 1.18rem;
      font-weight: 800;
      color: var(--c-text);
      white-space: nowrap;
    }

    .brand-icon {
      width: 42px;
      height: 42px;
      flex: 0 0 42px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, var(--c-primary), #ff7a1a);
      color: #0b0d14;
      font-size: 1.15rem;
      box-shadow: 0 8px 20px rgba(255, 184, 0, .25);
    }

    .brand-text {
      line-height: 1.25;
    }

    .main-nav .nav-list,
    .mobile-menu .nav-list {
      list-style: none;
      margin: 0;
      padding: 0;
      display: flex;
      align-items: center;
      gap: 4px;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 18px;
      border-radius: 999px;
      color: var(--c-muted);
      font-weight: 600;
      font-size: .96rem;
      border: 1px solid transparent;
      transition: color .2s ease, background .2s ease, border-color .2s ease;
    }

    .nav-link i,
    .nav-cta i {
      width: 1em;
      text-align: center;
    }

    .nav-link:hover {
      color: #fff;
      background: rgba(255, 255, 255, .06);
      border-color: var(--c-border);
    }

    .nav-link.active {
      color: var(--c-primary);
      background: rgba(255, 184, 0, .12);
      border-color: rgba(255, 184, 0, .2);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: var(--c-primary);
      color: #0b0d14;
      border-radius: 999px;
      padding: 12px 22px;
      font-weight: 800;
      font-size: .96rem;
      white-space: nowrap;
      box-shadow: 0 10px 24px rgba(255, 184, 0, .22);
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }

    .nav-cta:hover {
      background: var(--c-primary-light);
      transform: translateY(-2px);
      box-shadow: 0 14px 30px rgba(255, 184, 0, .32);
      color: #0b0d14;
    }

    .nav-cta:active {
      transform: translateY(0);
    }

    .nav-toggle {
      display: none;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      border-radius: 12px;
      border: 1px solid var(--c-border);
      background: var(--c-surface);
      color: var(--c-text);
      font-size: 1.2rem;
      cursor: pointer;
      transition: border-color .2s ease, color .2s ease;
    }

    .nav-toggle:hover {
      border-color: var(--c-primary);
      color: var(--c-primary);
    }

    .mobile-menu {
      display: none;
      background: var(--c-surface);
      border-top: 1px solid var(--c-border);
      padding: 16px;
    }

    .mobile-menu.active {
      display: block;
    }

    .mobile-menu .nav-list {
      flex-direction: column;
      align-items: stretch;
      gap: 8px;
    }

    .mobile-menu .nav-link {
      justify-content: flex-start;
      font-size: 1rem;
      padding: 14px 18px;
      background: var(--c-surface-2);
    }

    .mobile-menu .nav-cta {
      justify-content: center;
      margin-top: 8px;
    }

    .page-banner {
      position: relative;
      padding: 100px 0 88px;
      background-size: cover;
      background-position: center;
      border-bottom: 1px solid var(--c-border);
    }

    .page-banner:before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(100deg, rgba(11, 13, 20, .96) 8%, rgba(11, 13, 20, .82) 50%, rgba(11, 13, 20, .55) 100%);
    }

    .page-banner .grid-container {
      position: relative;
      z-index: 1;
    }

    .banner-inner {
      max-width: 900px;
    }

    .banner-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--c-primary);
      background: rgba(255, 184, 0, .12);
      border: 1px solid rgba(255, 184, 0, .28);
      padding: 7px 18px;
      border-radius: 999px;
      font-size: .88rem;
      font-weight: 700;
      letter-spacing: .04em;
      margin-bottom: 24px;
    }

    .banner-inner h1 {
      font-size: clamp(2.1rem, 4.2vw, 3.5rem);
      line-height: 1.2;
      color: #fff;
      margin: 0 0 18px;
      font-weight: 900;
      letter-spacing: -.02em;
    }

    .banner-inner .banner-desc {
      font-size: 1.12rem;
      color: #c9d0de;
      max-width: 760px;
      margin: 0 0 28px;
    }

    .banner-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }

    .meta-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, .07);
      border: 1px solid var(--c-border);
      color: #d8deea;
      padding: 8px 16px;
      border-radius: 999px;
      font-size: .88rem;
      font-weight: 600;
    }

    .meta-badge i {
      color: var(--c-primary);
    }

    .article-section {
      padding: 60px 0 48px;
    }

    .article-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 340px;
      gap: 32px;
      align-items: start;
    }

    .article-main {
      background: var(--c-surface);
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
    }

    .article-header {
      padding: 32px 36px 24px;
      border-bottom: 1px solid var(--c-border);
    }

    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      font-size: .88rem;
      color: var(--c-muted);
      margin-bottom: 18px;
    }

    .breadcrumb a {
      color: var(--c-primary);
      font-weight: 600;
    }

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

    .article-category {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--c-accent);
      background: rgba(0, 224, 178, .1);
      border: 1px solid rgba(0, 224, 178, .22);
      padding: 6px 14px;
      border-radius: 999px;
      font-size: .84rem;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .article-meta-row {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
      color: var(--c-muted);
      font-size: .9rem;
      margin: 4px 0 0;
    }

    .article-meta-row .meta-item {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .article-meta-row i {
      color: var(--c-primary);
    }

    .article-body {
      padding: 36px;
      background: var(--c-surface);
      color: #d6deea;
      word-break: break-word;
    }

    .article-body h2,
    .article-body h3,
    .article-body h4 {
      color: #fff;
      font-weight: 800;
      line-height: 1.4;
      margin: 1.6em 0 .8em;
      scroll-margin-top: 100px;
    }

    .article-body h2 {
      font-size: 1.55rem;
    }

    .article-body p {
      margin-bottom: 1.25rem;
      line-height: 1.95;
    }

    .article-body a {
      color: var(--c-primary);
      border-bottom: 1px solid rgba(255, 184, 0, .2);
      transition: color .2s ease, border-color .2s ease;
    }

    .article-body a:hover {
      color: var(--c-primary-light);
      border-color: var(--c-primary-light);
    }

    .article-body ul,
    .article-body ol {
      margin: 1.25rem 0;
      padding-left: 1.4rem;
    }

    .article-body li {
      margin-bottom: .6rem;
      line-height: 1.85;
    }

    .article-body blockquote {
      border-left: 4px solid var(--c-primary);
      background: var(--c-surface-2);
      padding: 22px 26px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      margin: 28px 0;
      color: #cbd2e1;
    }

    .article-body img {
      border-radius: var(--radius);
      margin: 28px 0;
      box-shadow: var(--shadow-md);
    }

    .article-body table {
      width: 100%;
      border-collapse: collapse;
      margin: 28px 0;
      background: var(--c-surface-2);
      border-radius: var(--radius-sm);
      overflow: hidden;
    }

    .article-body th,
    .article-body td {
      border: 1px solid var(--c-border);
      padding: 14px 16px;
      text-align: left;
    }

    .article-body th {
      background: rgba(255, 255, 255, .04);
      color: #fff;
      font-weight: 700;
    }

    .article-body code {
      background: var(--c-surface-2);
      padding: 2px 8px;
      border-radius: 6px;
      font-size: .92em;
      color: var(--c-primary-light);
    }

    .article-tags {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 10px;
      border-top: 1px solid var(--c-border);
      padding: 24px 36px;
      background: var(--c-surface);
    }

    .article-tags .tag-title {
      color: var(--c-muted);
      font-size: .9rem;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-right: 4px;
    }

    .article-tags .tag {
      display: inline-flex;
      align-items: center;
      background: var(--c-surface-2);
      border: 1px solid var(--c-border);
      color: #cbd2e1;
      padding: 6px 14px;
      border-radius: 999px;
      font-size: .84rem;
      font-weight: 600;
      transition: color .2s ease, border-color .2s ease, background .2s ease, transform .2s ease;
    }

    .article-tags .tag:hover {
      color: #fff;
      border-color: var(--c-primary);
      background: rgba(255, 184, 0, .12);
      transform: translateY(-2px);
    }

    .article-share {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      border-top: 1px solid var(--c-border);
      padding: 20px 36px;
      background: var(--c-surface);
    }

    .article-share span {
      color: var(--c-muted);
      font-size: .9rem;
      margin-right: 4px;
    }

    .article-share a {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--c-surface-2);
      border: 1px solid var(--c-border);
      color: #cbd2e1;
      padding: 8px 16px;
      border-radius: 999px;
      font-size: .85rem;
      font-weight: 600;
      transition: border-color .2s ease, color .2s ease, transform .2s ease;
    }

    .article-share a:hover {
      color: var(--c-primary);
      border-color: var(--c-primary);
      transform: translateY(-2px);
    }

    .article-sidebar {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .sidebar-card {
      background: var(--c-surface);
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-md);
    }

    .sidebar-card h3 {
      color: #fff;
      font-size: 1.08rem;
      font-weight: 800;
      margin: 0 0 18px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .sidebar-card h3 i {
      color: var(--c-primary);
    }

    .sidebar-cover {
      padding: 0;
      overflow: hidden;
    }

    .sidebar-cover img {
      width: 100%;
      height: 160px;
      object-fit: cover;
    }

    .sidebar-cover-body {
      padding: 22px;
    }

    .sidebar-badge {
      display: inline-block;
      background: var(--c-primary);
      color: #0b0d14;
      border-radius: 999px;
      padding: 4px 12px;
      font-size: .78rem;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .sidebar-cover-body h3 {
      margin-top: 4px;
    }

    .sidebar-cover-body p {
      color: var(--c-muted);
      font-size: .92rem;
      margin-bottom: 18px;
    }

    .button {
      border-radius: 999px;
      font-weight: 700;
      border: 1px solid transparent;
      padding: 14px 28px;
      margin-bottom: 0;
      box-shadow: 0 10px 22px rgba(255, 184, 0, .2);
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
    }

    .button.primary {
      background: var(--c-primary);
      color: #0b0d14;
    }

    .button.primary:hover,
    .button.primary:focus {
      background: var(--c-primary-light);
      color: #0b0d14;
      transform: translateY(-2px);
      box-shadow: 0 16px 32px rgba(255, 184, 0, .34);
    }

    .button.hollow,
    .button.hollow-light {
      background: transparent;
      color: var(--c-text);
      border: 1px solid var(--c-border);
      box-shadow: none;
    }

    .button.hollow:hover,
    .button.hollow-light:hover {
      border-color: var(--c-primary);
      color: var(--c-primary);
      transform: translateY(-2px);
      box-shadow: none;
      background: rgba(255, 184, 0, .06);
    }

    .button.expanded {
      width: 100%;
    }

    .sidebar-list,
    .rank-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .sidebar-list li + li {
      border-top: 1px solid var(--c-border);
    }

    .sidebar-list a {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 13px 4px;
      color: var(--c-muted);
      font-weight: 600;
      transition: color .2s ease, transform .2s ease, padding-left .2s ease;
    }

    .sidebar-list a i {
      color: var(--c-primary);
      font-size: .8rem;
    }

    .sidebar-list a:hover {
      color: #fff;
      transform: translateX(4px);
      padding-left: 8px;
    }

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

    .rank-list li {
      counter-increment: rank;
      border-bottom: 1px solid var(--c-border);
    }

    .rank-list li:last-child {
      border-bottom: 0;
    }

    .rank-list a {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 4px;
      color: #cbd2e1;
      font-size: .92rem;
      font-weight: 600;
      transition: color .2s ease, transform .2s ease;
    }

    .rank-list a:before {
      content: counter(rank, decimal-leading-zero);
      color: var(--c-primary);
      font-weight: 800;
      font-size: .9rem;
      min-width: 24px;
    }

    .rank-list a:hover {
      color: #fff;
      transform: translateX(4px);
    }

    .stats-card .stat-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 12px 0;
      border-bottom: 1px solid var(--c-border);
      color: var(--c-muted);
    }

    .stats-card .stat-item:last-child {
      border-bottom: 0;
    }

    .stats-card .stat-item strong {
      color: var(--c-success);
      font-size: .9rem;
      background: rgba(34, 197, 94, .12);
      border: 1px solid rgba(34, 197, 94, .22);
      padding: 4px 12px;
      border-radius: 999px;
    }

    .not-found {
      padding: 72px 24px;
      text-align: center;
    }

    .not-found i {
      font-size: 3.2rem;
      color: var(--c-primary);
      margin-bottom: 18px;
    }

    .not-found h2 {
      font-size: 2rem;
      color: #fff;
      margin: 0 0 12px;
    }

    .not-found p {
      color: var(--c-muted);
      margin-bottom: 26px;
    }

    .related-section {
      background: var(--c-surface);
      border-top: 1px solid var(--c-border);
      border-bottom: 1px solid var(--c-border);
    }

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

    .related-card {
      position: relative;
      display: flex;
      align-items: flex-end;
      min-height: 300px;
      background-size: cover;
      background-position: center;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--c-border);
      box-shadow: var(--shadow-md);
      transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }

    .related-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(255, 184, 0, .35);
    }

    .related-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(11, 13, 20, .05) 20%, rgba(11, 13, 20, .95) 100%);
      transition: background .25s ease;
    }

    .related-card:hover .related-overlay {
      background: linear-gradient(180deg, rgba(11, 13, 20, .12) 20%, rgba(11, 13, 20, .82) 100%);
    }

    .related-content {
      position: relative;
      z-index: 1;
      padding: 26px;
      color: #fff;
    }

    .media-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: var(--c-primary);
      color: #0b0d14;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      margin-bottom: 14px;
      box-shadow: 0 8px 22px rgba(255, 184, 0, .35);
    }

    .related-tag {
      display: inline-block;
      background: rgba(255, 184, 0, .16);
      border: 1px solid rgba(255, 184, 0, .28);
      color: var(--c-primary);
      padding: 4px 12px;
      border-radius: 999px;
      font-size: .78rem;
      font-weight: 800;
      letter-spacing: .03em;
      margin-bottom: 10px;
    }

    .related-content h3 {
      font-size: 1.18rem;
      line-height: 1.45;
      margin: 0 0 8px;
      font-weight: 800;
    }

    .related-content p {
      font-size: .92rem;
      color: #c9d0de;
      margin: 0;
    }

    .howto-section {
      position: relative;
      background-size: cover;
      background-position: center;
    }

    .howto-section:before {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(11, 13, 20, .9);
    }

    .howto-section .grid-container {
      position: relative;
      z-index: 1;
    }

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

    .step-card {
      background: rgba(21, 26, 42, .9);
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      padding: 36px 30px;
      transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
    }

    .step-card:hover {
      transform: translateY(-6px);
      border-color: rgba(255, 184, 0, .3);
      box-shadow: var(--shadow-md);
    }

    .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 52px;
      height: 52px;
      border-radius: 16px;
      background: var(--c-primary);
      color: #0b0d14;
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 22px;
      box-shadow: 0 10px 24px rgba(255, 184, 0, .24);
    }

    .step-card h3 {
      color: #fff;
      font-size: 1.22rem;
      font-weight: 800;
      margin: 0 0 10px;
    }

    .step-card p {
      color: var(--c-muted);
      margin: 0;
    }

    .faq-section {
      background: var(--c-surface);
      border-top: 1px solid var(--c-border);
    }

    .faq-wrap {
      max-width: 850px;
      margin: 0 auto;
    }

    .faq-accordion {
      background: transparent;
      margin: 0;
    }

    .faq-accordion .accordion-item {
      background: var(--c-surface-2);
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      margin-bottom: 16px;
      overflow: hidden;
      transition: border-color .2s ease, box-shadow .2s ease;
    }

    .faq-accordion .accordion-item:hover {
      border-color: rgba(255, 184, 0, .24);
    }

    .faq-accordion .accordion-title {
      background: transparent;
      border: 0;
      color: #fff;
      font-size: 1.02rem;
      font-weight: 700;
      line-height: 1.5;
      padding: 22px 52px 22px 24px;
      position: relative;
      display: block;
    }

    .faq-accordion .accordion-title:hover {
      color: var(--c-primary);
    }

    .faq-accordion .accordion-title::after {
      content: "\f078";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      border: 0;
      color: var(--c-primary);
      right: 22px;
      top: 50%;
      transform: translateY(-50%);
      font-size: .9rem;
      transition: transform .2s ease;
    }

    .faq-accordion .accordion-item.is-active .accordion-title::after {
      content: "\f077";
      transform: translateY(-50%);
    }

    .faq-accordion .accordion-content {
      background: var(--c-surface-2);
      border: 0;
      border-top: 1px solid var(--c-border);
      color: #cbd2e1;
      line-height: 1.85;
      padding: 4px 24px 22px;
    }

    .cta-section {
      position: relative;
      background-size: cover;
      background-position: center;
      padding: 90px 0;
    }

    .cta-section:before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(11, 13, 20, .96), rgba(11, 13, 20, .8));
    }

    .cta-box {
      position: relative;
      z-index: 1;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 32px;
      background: rgba(255, 255, 255, .04);
      border: 1px solid var(--c-border);
      border-radius: var(--radius);
      padding: 44px;
      backdrop-filter: blur(8px);
    }

    .cta-kicker {
      color: var(--c-primary);
      font-size: .88rem;
      font-weight: 800;
      letter-spacing: .08em;
    }

    .cta-box h2 {
      color: #fff;
      font-size: clamp(1.6rem, 2.6vw, 2.3rem);
      line-height: 1.25;
      margin: 10px 0 12px;
      font-weight: 800;
    }

    .cta-box p {
      color: var(--c-muted);
      margin: 0;
      max-width: 560px;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      flex: 0 0 auto;
    }

    .site-footer {
      background: var(--c-surface);
      border-top: 1px solid var(--c-border);
      padding: 64px 0 28px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr;
      gap: 44px;
      padding-bottom: 36px;
    }

    .footer-brand p {
      color: var(--c-muted);
      margin: 18px 0 0;
      font-size: .95rem;
      line-height: 1.8;
      max-width: 400px;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 1rem;
      font-weight: 800;
      margin: 0 0 18px;
    }

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

    .footer-col a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--c-muted);
      padding: 8px 0;
      font-size: .94rem;
      transition: color .2s ease, transform .2s ease;
    }

    .footer-col a:before {
      content: "\f105";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      color: var(--c-primary);
      font-size: .8rem;
      transition: transform .2s ease;
    }

    .footer-col a:hover {
      color: #fff;
      transform: translateX(4px);
    }

    .footer-bottom {
      border-top: 1px solid var(--c-border);
      padding-top: 26px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      color: var(--c-muted);
      font-size: .9rem;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .footer-links a {
      color: var(--c-muted);
      transition: color .2s ease;
    }

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

    @media screen and (max-width: 1024px) {
      .article-layout {
        grid-template-columns: 1fr;
      }

      .article-sidebar {
        display: grid;
        grid-template-columns: 1fr 1fr;
        align-items: start;
      }

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

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

    @media screen and (max-width: 768px) {
      .section {
        padding: 60px 0;
      }

      .header-inner {
        height: 68px;
        gap: 12px;
      }

      .brand-text {
        font-size: 1rem;
      }

      .main-nav,
      .nav-cta {
        display: none;
      }

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

      .page-banner {
        padding: 70px 0 58px;
      }

      .banner-inner h1 {
        font-size: 2.1rem;
      }

      .banner-inner .banner-desc {
        font-size: 1rem;
      }

      .article-header {
        padding: 24px 22px 18px;
      }

      .article-body {
        padding: 24px 22px;
      }

      .article-tags,
      .article-share {
        padding-left: 22px;
        padding-right: 22px;
      }

      .article-sidebar {
        grid-template-columns: 1fr;
      }

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

      .steps-grid {
        gap: 16px;
      }

      .cta-section {
        padding: 60px 0;
      }

      .cta-box {
        flex-direction: column;
        align-items: flex-start;
        padding: 30px;
      }

      .cta-actions {
        width: 100%;
      }

      .cta-actions .button {
        flex: 1;
        text-align: center;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }

    @media screen and (max-width: 520px) {
      .brand-icon {
        width: 38px;
        height: 38px;
        flex: 0 0 38px;
        border-radius: 12px;
        font-size: 1rem;
      }

      .brand-text {
        font-size: .92rem;
      }

      .page-banner {
        padding: 54px 0 44px;
      }

      .banner-inner h1 {
        font-size: 1.7rem;
      }

      .banner-meta {
        flex-direction: column;
        align-items: flex-start;
      }

      .meta-badge {
        width: 100%;
      }

      .article-section {
        padding: 36px 0 24px;
      }

      .article-header h1 {
        font-size: 1.55rem;
      }

      .article-body {
        padding: 20px 18px;
      }

      .article-share {
        flex-direction: column;
        align-items: flex-start;
      }

      .related-card {
        min-height: 240px;
      }

      .cta-box {
        padding: 24px 20px;
      }

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

      .cta-actions .button {
        width: 100%;
      }

      .step-card {
        padding: 28px 22px;
      }

      .footer-links {
        flex-direction: column;
        gap: 8px;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *:before,
      *:after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
      }
    }

/* roulang page: category2 */
:root {
      --primary: #4f46e5;
      --primary-dark: #4338ca;
      --primary-light: #818cf8;
      --accent: #06b6d4;
      --accent-light: #22d3ee;
      --dark-bg: #0b1120;
      --dark-bg-2: #111827;
      --dark-card: #1e293b;
      --light-bg: #f1f5f9;
      --card-bg: #ffffff;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --radius-lg: 20px;
      --radius-md: 14px;
      --radius-sm: 8px;
      --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
      --shadow-lg: 0 16px 44px rgba(0, 0, 0, 0.12);
      --transition: 0.3s ease;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      background: var(--light-bg);
      color: var(--text-main);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

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

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

    a:hover,
    a:focus {
      color: var(--primary-dark);
      outline: none;
    }

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

    .grid-container {
      max-width: 1280px;
    }

    .section {
      padding: 90px 0;
    }

    .section-title {
      text-align: center;
      margin-bottom: 16px;
      font-weight: 800;
      font-size: 2.4rem;
      letter-spacing: -0.02em;
      color: var(--text-main);
    }

    .section-subtitle {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 48px;
      color: var(--text-muted);
      font-size: 1.08rem;
    }

    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
      border: 1px solid rgba(79, 70, 229, 0.2);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 18px;
    }

    /* === Header / Nav === */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(11, 17, 32, 0.92);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      min-height: 76px;
      padding: 12px 0;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 1.25rem;
      color: #ffffff;
      white-space: nowrap;
      transition: opacity var(--transition);
    }

    .brand-logo:hover {
      color: #ffffff;
      opacity: 0.85;
    }

    .brand-icon {
      width: 42px;
      height: 42px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: 12px;
      color: #fff;
      font-size: 1.1rem;
      box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
    }

    .main-nav .nav-list {
      display: flex;
      align-items: center;
      gap: 6px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 18px;
      border-radius: 10px;
      color: #cbd5e1;
      font-weight: 500;
      font-size: 0.98rem;
      transition: all var(--transition);
    }

    .nav-link i {
      font-size: 0.95rem;
      color: var(--primary-light);
    }

    .nav-link:hover {
      background: rgba(255, 255, 255, 0.08);
      color: #fff;
    }

    .nav-link.active {
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.9), rgba(6, 182, 212, 0.75));
      color: #fff;
      font-weight: 600;
      box-shadow: 0 6px 20px rgba(79, 70, 229, 0.35);
    }

    .nav-link.active i {
      color: #fff;
    }

    .header-cta {
      flex-shrink: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 26px;
      border-radius: 12px;
      font-weight: 600;
      font-size: 0.98rem;
      border: 2px solid transparent;
      cursor: pointer;
      transition: all var(--transition);
      text-decoration: none;
      line-height: 1.4;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #fff;
      box-shadow: 0 8px 24px rgba(79, 70, 229, 0.35);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, #4338ca, #3730a3);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(79, 70, 229, 0.42);
    }

    .btn-outline {
      background: transparent;
      color: #fff;
      border-color: rgba(255, 255, 255, 0.5);
    }

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

    .btn-outline-dark {
      background: transparent;
      color: var(--text-main);
      border-color: var(--border-color);
    }

    .btn-outline-dark:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(79, 70, 229, 0.04);
    }

    .btn-sm {
      padding: 9px 20px;
      font-size: 0.9rem;
      border-radius: 10px;
    }

    .btn-lg {
      padding: 16px 38px;
      font-size: 1.05rem;
      border-radius: 14px;
    }

    .nav-toggle {
      display: none;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      color: #fff;
      width: 44px;
      height: 44px;
      border-radius: 10px;
      font-size: 1.2rem;
      cursor: pointer;
      align-items: center;
      justify-content: center;
      transition: background var(--transition);
    }

    .nav-toggle:hover {
      background: rgba(255, 255, 255, 0.16);
    }

    /* === Hero === */
    .page-hero {
      position: relative;
      min-height: 520px;
      display: flex;
      align-items: center;
      overflow: hidden;
      background: var(--dark-bg);
      color: #fff;
    }

    .hero-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      opacity: 0.35;
      z-index: 1;
    }

    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(120deg, rgba(11, 17, 32, 0.96) 20%, rgba(11, 17, 32, 0.7) 60%, rgba(79, 70, 229, 0.35) 100%);
      z-index: 2;
    }

    .page-hero .grid-container {
      position: relative;
      z-index: 3;
      width: 100%;
      padding-top: 80px;
      padding-bottom: 80px;
    }

    .hero-content {
      max-width: 760px;
      padding: 40px 0;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.22);
      color: #e0e7ff;
      padding: 7px 18px;
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 22px;
      backdrop-filter: blur(6px);
    }

    .hero-content h1 {
      font-size: 3.4rem;
      font-weight: 900;
      line-height: 1.15;
      margin: 0 0 18px;
      letter-spacing: -0.02em;
      background: linear-gradient(120deg, #fff 30%, #c7d2fe 90%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-content p {
      font-size: 1.15rem;
      color: #cbd5e1;
      max-width: 620px;
      margin: 0 0 36px;
      line-height: 1.8;
    }

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

    .hero-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
      margin-top: 40px;
      padding-top: 28px;
      border-top: 1px solid rgba(255, 255, 255, 0.14);
    }

    .hero-meta-item {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #94a3b8;
      font-size: 0.95rem;
    }

    .hero-meta-item i {
      color: var(--accent);
      font-size: 1.05rem;
    }

    /* === 功能卡片 === */
    .functions-section {
      background: var(--light-bg);
      position: relative;
    }

    .function-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      height: 100%;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      transition: all var(--transition);
      position: relative;
      overflow: hidden;
    }

    .function-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);
    }

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

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

    .func-icon {
      width: 58px;
      height: 58px;
      border-radius: 16px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.12), rgba(6, 182, 212, 0.12));
      color: var(--primary);
      margin-bottom: 22px;
    }

    .function-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin: 0 0 12px;
      color: var(--text-main);
    }

    .function-card p {
      color: var(--text-muted);
      font-size: 0.98rem;
      margin: 0 0 18px;
      line-height: 1.7;
    }

    .func-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #f8fafc;
      border: 1px solid var(--border-color);
      border-radius: 20px;
      padding: 5px 14px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
    }

    .func-tag i {
      color: var(--accent);
      font-size: 0.8rem;
    }

    /* === 安全图文 === */
    .security-section {
      background: var(--dark-bg);
      color: #fff;
      position: relative;
      overflow: hidden;
    }

    .security-section::before {
      content: "";
      position: absolute;
      top: -120px;
      right: -120px;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      background: rgba(79, 70, 229, 0.2);
      filter: blur(80px);
    }

    .security-section .section-title {
      color: #fff;
    }

    .security-section .section-subtitle {
      color: #94a3b8;
    }

    .security-grid {
      display: flex;
      align-items: center;
      gap: 60px;
    }

    .security-content {
      flex: 1;
    }

    .security-content h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin: 0 0 18px;
      line-height: 1.3;
    }

    .security-content > p {
      color: #94a3b8;
      font-size: 1.05rem;
      margin-bottom: 28px;
    }

    .security-list {
      list-style: none;
      margin: 0 0 32px;
      padding: 0;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .security-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 14px;
      padding: 18px 16px;
      font-size: 0.95rem;
      color: #e2e8f0;
      line-height: 1.6;
    }

    .security-list li i {
      color: var(--accent);
      font-size: 1.1rem;
      margin-top: 2px;
      flex-shrink: 0;
    }

    .security-image-wrap {
      flex: 1;
      position: relative;
    }

    .security-image-wrap img {
      border-radius: var(--radius-lg);
      box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .security-image-badge {
      position: absolute;
      bottom: 24px;
      left: 24px;
      background: rgba(11, 17, 32, 0.85);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: 14px;
      padding: 12px 18px;
      color: #fff;
      font-size: 0.9rem;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .security-image-badge i {
      color: var(--accent);
    }

    /* === 流程 === */
    .process-section {
      background: var(--light-bg);
    }

    .process-card {
      text-align: center;
      padding: 40px 28px;
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      height: 100%;
      box-shadow: var(--shadow-md);
      position: relative;
      transition: all var(--transition);
    }

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

    .process-num {
      width: 52px;
      height: 52px;
      margin: 0 auto 20px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-weight: 800;
      font-size: 1.3rem;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 8px 22px rgba(79, 70, 229, 0.3);
    }

    .process-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin: 0 0 12px;
    }

    .process-card p {
      color: var(--text-muted);
      font-size: 0.94rem;
      margin: 0;
      line-height: 1.7;
    }

    .process-link {
      display: inline-block;
      margin-top: 20px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary);
    }

    .process-link i {
      transition: transform var(--transition);
    }

    .process-link:hover i {
      transform: translateX(4px);
    }

    /* === 排行 === */
    .ranking-section {
      background: var(--dark-bg-2);
      color: #fff;
      position: relative;
      overflow: hidden;
    }

    .ranking-section::after {
      content: "";
      position: absolute;
      bottom: -100px;
      left: -100px;
      width: 300px;
      height: 300px;
      border-radius: 50%;
      background: rgba(6, 182, 212, 0.15);
      filter: blur(80px);
    }

    .ranking-section .section-title {
      color: #fff;
    }

    .ranking-section .section-subtitle {
      color: #94a3b8;
    }

    .ranking-list {
      max-width: 860px;
      margin: 0 auto;
      display: grid;
      gap: 14px;
      position: relative;
      z-index: 2;
    }

    .ranking-item {
      display: flex;
      align-items: center;
      gap: 20px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 16px;
      padding: 18px 24px;
      transition: all var(--transition);
    }

    .ranking-item:hover {
      background: rgba(255, 255, 255, 0.08);
      transform: translateX(6px);
      border-color: rgba(129, 140, 248, 0.5);
    }

    .ranking-num {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: #fff;
      font-weight: 800;
      font-size: 1.15rem;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .ranking-item:nth-child(2) .ranking-num {
      background: linear-gradient(135deg, #7c3aed, #06b6d4);
    }

    .ranking-item:nth-child(3) .ranking-num {
      background: linear-gradient(135deg, #2563eb, #38bdf8);
    }

    .ranking-item:nth-child(4) .ranking-num {
      background: linear-gradient(135deg, #0d9488, #2dd4bf);
    }

    .ranking-item:nth-child(5) .ranking-num {
      background: linear-gradient(135deg, #d97706, #fbbf24);
    }

    .ranking-info {
      flex: 1;
    }

    .ranking-info h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin: 0 0 4px;
      color: #fff;
    }

    .ranking-info p {
      margin: 0;
      color: #94a3b8;
      font-size: 0.92rem;
    }

    .ranking-tag {
      flex-shrink: 0;
      background: rgba(129, 140, 248, 0.16);
      border: 1px solid rgba(129, 140, 248, 0.3);
      color: #c7d2fe;
      font-size: 0.82rem;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: 20px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

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

    .faq-wrap {
      max-width: 820px;
      margin: 0 auto;
      display: grid;
      gap: 14px;
    }

    .faq-item {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      overflow: hidden;
      transition: box-shadow var(--transition);
    }

    .faq-item:hover {
      box-shadow: var(--shadow-lg);
    }

    .faq-item summary {
      padding: 22px 26px;
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      font-weight: 600;
      font-size: 1rem;
      color: var(--text-main);
      transition: color var(--transition);
    }

    .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: 0.85rem;
      color: var(--text-muted);
      transition: transform var(--transition), color var(--transition);
      flex-shrink: 0;
    }

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

    .faq-item[open] summary {
      color: var(--primary);
    }

    .faq-item .faq-answer {
      padding: 0 26px 22px;
      color: var(--text-muted);
      font-size: 0.97rem;
      line-height: 1.8;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
      margin-top: 0;
    }

    /* === CTA === */
    .cta-section {
      background: linear-gradient(135deg, var(--dark-bg) 0%, #1e1b4b 100%);
      position: relative;
      overflow: hidden;
      padding: 90px 0;
      color: #fff;
    }

    .cta-section::before {
      content: "";
      position: absolute;
      top: 50%;
      left: 50%;
      width: 500px;
      height: 500px;
      transform: translate(-50%, -50%);
      background: rgba(79, 70, 229, 0.2);
      border-radius: 50%;
      filter: blur(100px);
    }

    .cta-inner {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 700px;
      margin: 0 auto;
    }

    .cta-inner h2 {
      font-size: 2.2rem;
      font-weight: 800;
      margin: 0 0 18px;
      line-height: 1.3;
    }

    .cta-inner p {
      color: #cbd5e1;
      font-size: 1.1rem;
      margin-bottom: 34px;
      line-height: 1.8;
    }

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

    /* === Footer === */
    .site-footer {
      background: var(--dark-bg);
      color: #94a3b8;
      padding: 70px 0 0;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 50px;
      padding-bottom: 50px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    }

    .footer-brand .brand-logo {
      font-size: 1.15rem;
      margin-bottom: 16px;
    }

    .footer-brand p {
      margin: 0;
      max-width: 380px;
      font-size: 0.95rem;
      line-height: 1.8;
      color: #94a3b8;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
      margin: 0 0 18px;
    }

    .footer-col ul {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      gap: 10px;
    }

    .footer-col ul a {
      color: #94a3b8;
      font-size: 0.94rem;
      transition: color var(--transition);
    }

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

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      padding: 20px 0 24px;
    }

    .footer-bottom p {
      margin: 0;
      font-size: 0.88rem;
      color: #64748b;
    }

    .footer-links {
      display: flex;
      gap: 18px;
    }

    .footer-links a {
      color: #64748b;
      font-size: 0.88rem;
      transition: color var(--transition);
    }

    .footer-links a:hover {
      color: #fff;
    }

    /* === 响应式 === */
    @media (max-width: 1024px) {
      .section {
        padding: 70px 0;
      }

      .security-grid {
        gap: 40px;
      }

      .security-content h3 {
        font-size: 1.5rem;
      }

      .footer-grid {
        gap: 30px;
      }
    }

    @media (max-width: 900px) {
      .nav-toggle {
        display: inline-flex;
      }

      .main-nav {
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: rgba(11, 17, 32, 0.97);
        backdrop-filter: blur(18px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        padding: 16px 20px;
        display: none;
        z-index: 99;
      }

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

      .main-nav .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
      }

      .nav-link {
        padding: 14px 18px;
        border-radius: 10px;
      }

      .header-cta {
        margin-left: auto;
      }

      .security-grid {
        flex-direction: column;
      }

      .security-image-wrap {
        width: 100%;
      }

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

      .footer-brand {
        grid-column: 1 / -1;
      }

      .hero-content h1 {
        font-size: 2.4rem;
      }
    }

    @media (max-width: 640px) {
      .section {
        padding: 56px 0;
      }

      .section-title {
        font-size: 1.7rem;
      }

      .hero-content h1 {
        font-size: 2rem;
      }

      .hero-content p {
        font-size: 1rem;
      }

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

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

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
      }

      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }

      .footer-links {
        justify-content: center;
      }

      .ranking-item {
        flex-wrap: wrap;
        gap: 12px;
      }

      .ranking-tag {
        margin-left: auto;
      }

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

      .brand-text {
        font-size: 1.05rem;
      }

      .header-cta .btn-sm {
        padding: 8px 14px;
        font-size: 0.85rem;
      }
    }

    @media (max-width: 480px) {
      .nav-toggle {
        width: 40px;
        height: 40px;
      }

      .brand-icon {
        width: 36px;
        height: 36px;
        font-size: 0.95rem;
      }

      .brand-text {
        max-width: 160px;
        white-space: normal;
        line-height: 1.3;
      }

      .function-card {
        padding: 26px 20px;
      }

      .cta-inner h2 {
        font-size: 1.6rem;
      }
    }